diff options
Diffstat (limited to 'tk8.6/generic/tkEntry.c')
| -rw-r--r-- | tk8.6/generic/tkEntry.c | 4492 |
1 files changed, 0 insertions, 4492 deletions
diff --git a/tk8.6/generic/tkEntry.c b/tk8.6/generic/tkEntry.c deleted file mode 100644 index 9e25bed..0000000 --- a/tk8.6/generic/tkEntry.c +++ /dev/null @@ -1,4492 +0,0 @@ -/* - * tkEntry.c -- - * - * This module implements entry and spinbox widgets for the Tk toolkit. - * An entry displays a string and allows the string to be edited. A - * spinbox expands on the entry by adding up/down buttons that control - * the value of the entry widget. - * - * Copyright (c) 1990-1994 The Regents of the University of California. - * Copyright (c) 1994-1997 Sun Microsystems, Inc. - * Copyright (c) 2000 Ajuba Solutions. - * Copyright (c) 2002 ActiveState Corporation. - * - * See the file "license.terms" for information on usage and redistribution of - * this file, and for a DISCLAIMER OF ALL WARRANTIES. - */ - -#include "tkInt.h" -#include "default.h" -#include "tkEntry.h" - -/* - * The following macro defines how many extra pixels to leave on each side of - * the text in the entry. - */ - -#define XPAD 1 -#define YPAD 1 - -/* - * A comparison function for double values. For Spinboxes. - */ - -#define MIN_DBL_VAL 1E-9 -#define DOUBLES_EQ(d1, d2) (fabs((d1) - (d2)) < MIN_DBL_VAL) - - -static const char *const stateStrings[] = { - "disabled", "normal", "readonly", NULL -}; - -/* - * Definitions for -validate option values: - */ - -static const char *const validateStrings[] = { - "all", "key", "focus", "focusin", "focusout", "none", NULL -}; -enum validateType { - VALIDATE_ALL, VALIDATE_KEY, VALIDATE_FOCUS, - VALIDATE_FOCUSIN, VALIDATE_FOCUSOUT, VALIDATE_NONE, - /* - * These extra enums are for use with EntryValidateChange - */ - VALIDATE_FORCED, VALIDATE_DELETE, VALIDATE_INSERT, VALIDATE_BUTTON -}; -#define DEF_ENTRY_VALIDATE "none" -#define DEF_ENTRY_INVALIDCMD "" - -/* - * Information used for Entry objv parsing. - */ - -static const Tk_OptionSpec entryOptSpec[] = { - {TK_OPTION_BORDER, "-background", "background", "Background", - DEF_ENTRY_BG_COLOR, -1, Tk_Offset(Entry, normalBorder), - 0, DEF_ENTRY_BG_MONO, 0}, - {TK_OPTION_SYNONYM, "-bd", NULL, NULL, - NULL, 0, -1, 0, "-borderwidth", 0}, - {TK_OPTION_SYNONYM, "-bg", NULL, NULL, - NULL, 0, -1, 0, "-background", 0}, - {TK_OPTION_PIXELS, "-borderwidth", "borderWidth", "BorderWidth", - DEF_ENTRY_BORDER_WIDTH, -1, Tk_Offset(Entry, borderWidth), 0, 0, 0}, - {TK_OPTION_CURSOR, "-cursor", "cursor", "Cursor", - DEF_ENTRY_CURSOR, -1, Tk_Offset(Entry, cursor), - TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_BORDER, "-disabledbackground", "disabledBackground", - "DisabledBackground", DEF_ENTRY_DISABLED_BG_COLOR, -1, - Tk_Offset(Entry, disabledBorder), TK_OPTION_NULL_OK, - (ClientData) DEF_ENTRY_DISABLED_BG_MONO, 0}, - {TK_OPTION_COLOR, "-disabledforeground", "disabledForeground", - "DisabledForeground", DEF_ENTRY_DISABLED_FG, -1, - Tk_Offset(Entry, dfgColorPtr), TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_BOOLEAN, "-exportselection", "exportSelection", - "ExportSelection", DEF_ENTRY_EXPORT_SELECTION, -1, - Tk_Offset(Entry, exportSelection), 0, 0, 0}, - {TK_OPTION_SYNONYM, "-fg", "foreground", NULL, - NULL, 0, -1, 0, "-foreground", 0}, - {TK_OPTION_FONT, "-font", "font", "Font", - DEF_ENTRY_FONT, -1, Tk_Offset(Entry, tkfont), 0, 0, 0}, - {TK_OPTION_COLOR, "-foreground", "foreground", "Foreground", - DEF_ENTRY_FG, -1, Tk_Offset(Entry, fgColorPtr), 0, 0, 0}, - {TK_OPTION_COLOR, "-highlightbackground", "highlightBackground", - "HighlightBackground", DEF_ENTRY_HIGHLIGHT_BG, - -1, Tk_Offset(Entry, highlightBgColorPtr), 0, 0, 0}, - {TK_OPTION_COLOR, "-highlightcolor", "highlightColor", "HighlightColor", - DEF_ENTRY_HIGHLIGHT, -1, Tk_Offset(Entry, highlightColorPtr), 0, 0, 0}, - {TK_OPTION_PIXELS, "-highlightthickness", "highlightThickness", - "HighlightThickness", DEF_ENTRY_HIGHLIGHT_WIDTH, -1, - Tk_Offset(Entry, highlightWidth), 0, 0, 0}, - {TK_OPTION_BORDER, "-insertbackground", "insertBackground", "Foreground", - DEF_ENTRY_INSERT_BG, -1, Tk_Offset(Entry, insertBorder), 0, 0, 0}, - {TK_OPTION_PIXELS, "-insertborderwidth", "insertBorderWidth", - "BorderWidth", DEF_ENTRY_INSERT_BD_COLOR, -1, - Tk_Offset(Entry, insertBorderWidth), 0, - (ClientData) DEF_ENTRY_INSERT_BD_MONO, 0}, - {TK_OPTION_INT, "-insertofftime", "insertOffTime", "OffTime", - DEF_ENTRY_INSERT_OFF_TIME, -1, Tk_Offset(Entry, insertOffTime), - 0, 0, 0}, - {TK_OPTION_INT, "-insertontime", "insertOnTime", "OnTime", - DEF_ENTRY_INSERT_ON_TIME, -1, Tk_Offset(Entry, insertOnTime), 0, 0, 0}, - {TK_OPTION_PIXELS, "-insertwidth", "insertWidth", "InsertWidth", - DEF_ENTRY_INSERT_WIDTH, -1, Tk_Offset(Entry, insertWidth), 0, 0, 0}, - {TK_OPTION_STRING, "-invalidcommand", "invalidCommand", "InvalidCommand", - DEF_ENTRY_INVALIDCMD, -1, Tk_Offset(Entry, invalidCmd), - TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_SYNONYM, "-invcmd", NULL, NULL, - NULL, 0, -1, 0, "-invalidcommand", 0}, - {TK_OPTION_JUSTIFY, "-justify", "justify", "Justify", - DEF_ENTRY_JUSTIFY, -1, Tk_Offset(Entry, justify), 0, 0, 0}, - {TK_OPTION_BORDER, "-readonlybackground", "readonlyBackground", - "ReadonlyBackground", DEF_ENTRY_READONLY_BG_COLOR, -1, - Tk_Offset(Entry, readonlyBorder), TK_OPTION_NULL_OK, - (ClientData) DEF_ENTRY_READONLY_BG_MONO, 0}, - {TK_OPTION_RELIEF, "-relief", "relief", "Relief", - DEF_ENTRY_RELIEF, -1, Tk_Offset(Entry, relief), 0, 0, 0}, - {TK_OPTION_BORDER, "-selectbackground", "selectBackground", "Foreground", - DEF_ENTRY_SELECT_COLOR, -1, Tk_Offset(Entry, selBorder), - 0, DEF_ENTRY_SELECT_MONO, 0}, - {TK_OPTION_PIXELS, "-selectborderwidth", "selectBorderWidth", - "BorderWidth", DEF_ENTRY_SELECT_BD_COLOR, -1, - Tk_Offset(Entry, selBorderWidth), - 0, DEF_ENTRY_SELECT_BD_MONO, 0}, - {TK_OPTION_COLOR, "-selectforeground", "selectForeground", "Background", - DEF_ENTRY_SELECT_FG_COLOR, -1, Tk_Offset(Entry, selFgColorPtr), - TK_OPTION_NULL_OK, DEF_ENTRY_SELECT_FG_MONO, 0}, - {TK_OPTION_STRING, "-show", "show", "Show", - DEF_ENTRY_SHOW, -1, Tk_Offset(Entry, showChar), - TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_STRING_TABLE, "-state", "state", "State", - DEF_ENTRY_STATE, -1, Tk_Offset(Entry, state), - 0, stateStrings, 0}, - {TK_OPTION_STRING, "-takefocus", "takeFocus", "TakeFocus", - DEF_ENTRY_TAKE_FOCUS, -1, Tk_Offset(Entry, takeFocus), - TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_STRING, "-textvariable", "textVariable", "Variable", - DEF_ENTRY_TEXT_VARIABLE, -1, Tk_Offset(Entry, textVarName), - TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_STRING_TABLE, "-validate", "validate", "Validate", - DEF_ENTRY_VALIDATE, -1, Tk_Offset(Entry, validate), - 0, validateStrings, 0}, - {TK_OPTION_STRING, "-validatecommand", "validateCommand","ValidateCommand", - NULL, -1, Tk_Offset(Entry, validateCmd), TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_SYNONYM, "-vcmd", NULL, NULL, - NULL, 0, -1, 0, "-validatecommand", 0}, - {TK_OPTION_INT, "-width", "width", "Width", - DEF_ENTRY_WIDTH, -1, Tk_Offset(Entry, prefWidth), 0, 0, 0}, - {TK_OPTION_STRING, "-xscrollcommand", "xScrollCommand", "ScrollCommand", - DEF_ENTRY_SCROLL_COMMAND, -1, Tk_Offset(Entry, scrollCmd), - TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_END, NULL, NULL, NULL, NULL, 0, -1, 0, 0, 0} -}; - -/* - * Information used for Spinbox objv parsing. - */ - -#define DEF_SPINBOX_REPEAT_DELAY "400" -#define DEF_SPINBOX_REPEAT_INTERVAL "100" - -#define DEF_SPINBOX_CMD "" - -#define DEF_SPINBOX_FROM "0" -#define DEF_SPINBOX_TO "0" -#define DEF_SPINBOX_INCREMENT "1" -#define DEF_SPINBOX_FORMAT "" - -#define DEF_SPINBOX_VALUES "" -#define DEF_SPINBOX_WRAP "0" - -static const Tk_OptionSpec sbOptSpec[] = { - {TK_OPTION_BORDER, "-activebackground", "activeBackground", "Background", - DEF_BUTTON_ACTIVE_BG_COLOR, -1, Tk_Offset(Spinbox, activeBorder), - 0, DEF_BUTTON_ACTIVE_BG_MONO, 0}, - {TK_OPTION_BORDER, "-background", "background", "Background", - DEF_ENTRY_BG_COLOR, -1, Tk_Offset(Entry, normalBorder), - 0, DEF_ENTRY_BG_MONO, 0}, - {TK_OPTION_SYNONYM, "-bd", NULL, NULL, - NULL, 0, -1, 0, "-borderwidth", 0}, - {TK_OPTION_SYNONYM, "-bg", NULL, NULL, - NULL, 0, -1, 0, "-background", 0}, - {TK_OPTION_PIXELS, "-borderwidth", "borderWidth", "BorderWidth", - DEF_ENTRY_BORDER_WIDTH, -1, Tk_Offset(Entry, borderWidth), 0, 0, 0}, - {TK_OPTION_BORDER, "-buttonbackground", "Button.background", "Background", - DEF_BUTTON_BG_COLOR, -1, Tk_Offset(Spinbox, buttonBorder), - 0, DEF_BUTTON_BG_MONO, 0}, - {TK_OPTION_CURSOR, "-buttoncursor", "Button.cursor", "Cursor", - DEF_BUTTON_CURSOR, -1, Tk_Offset(Spinbox, bCursor), - TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_RELIEF, "-buttondownrelief", "Button.relief", "Relief", - DEF_BUTTON_RELIEF, -1, Tk_Offset(Spinbox, bdRelief), 0, 0, 0}, - {TK_OPTION_RELIEF, "-buttonuprelief", "Button.relief", "Relief", - DEF_BUTTON_RELIEF, -1, Tk_Offset(Spinbox, buRelief), 0, 0, 0}, - {TK_OPTION_STRING, "-command", "command", "Command", - DEF_SPINBOX_CMD, -1, Tk_Offset(Spinbox, command), - TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_CURSOR, "-cursor", "cursor", "Cursor", - DEF_ENTRY_CURSOR, -1, Tk_Offset(Entry, cursor), - TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_BORDER, "-disabledbackground", "disabledBackground", - "DisabledBackground", DEF_ENTRY_DISABLED_BG_COLOR, -1, - Tk_Offset(Entry, disabledBorder), TK_OPTION_NULL_OK, - (ClientData) DEF_ENTRY_DISABLED_BG_MONO, 0}, - {TK_OPTION_COLOR, "-disabledforeground", "disabledForeground", - "DisabledForeground", DEF_ENTRY_DISABLED_FG, -1, - Tk_Offset(Entry, dfgColorPtr), TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_BOOLEAN, "-exportselection", "exportSelection", - "ExportSelection", DEF_ENTRY_EXPORT_SELECTION, -1, - Tk_Offset(Entry, exportSelection), 0, 0, 0}, - {TK_OPTION_SYNONYM, "-fg", "foreground", NULL, - NULL, 0, -1, 0, "-foreground", 0}, - {TK_OPTION_FONT, "-font", "font", "Font", - DEF_ENTRY_FONT, -1, Tk_Offset(Entry, tkfont), 0, 0, 0}, - {TK_OPTION_COLOR, "-foreground", "foreground", "Foreground", - DEF_ENTRY_FG, -1, Tk_Offset(Entry, fgColorPtr), 0, 0, 0}, - {TK_OPTION_STRING, "-format", "format", "Format", - DEF_SPINBOX_FORMAT, -1, Tk_Offset(Spinbox, reqFormat), - TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_DOUBLE, "-from", "from", "From", - DEF_SPINBOX_FROM, -1, Tk_Offset(Spinbox, fromValue), 0, 0, 0}, - {TK_OPTION_COLOR, "-highlightbackground", "highlightBackground", - "HighlightBackground", DEF_ENTRY_HIGHLIGHT_BG, - -1, Tk_Offset(Entry, highlightBgColorPtr), 0, 0, 0}, - {TK_OPTION_COLOR, "-highlightcolor", "highlightColor", "HighlightColor", - DEF_ENTRY_HIGHLIGHT, -1, Tk_Offset(Entry, highlightColorPtr), 0, 0, 0}, - {TK_OPTION_PIXELS, "-highlightthickness", "highlightThickness", - "HighlightThickness", DEF_ENTRY_HIGHLIGHT_WIDTH, -1, - Tk_Offset(Entry, highlightWidth), 0, 0, 0}, - {TK_OPTION_DOUBLE, "-increment", "increment", "Increment", - DEF_SPINBOX_INCREMENT, -1, Tk_Offset(Spinbox, increment), 0, 0, 0}, - {TK_OPTION_BORDER, "-insertbackground", "insertBackground", "Foreground", - DEF_ENTRY_INSERT_BG, -1, Tk_Offset(Entry, insertBorder), 0, 0, 0}, - {TK_OPTION_PIXELS, "-insertborderwidth", "insertBorderWidth", - "BorderWidth", DEF_ENTRY_INSERT_BD_COLOR, -1, - Tk_Offset(Entry, insertBorderWidth), 0, - (ClientData) DEF_ENTRY_INSERT_BD_MONO, 0}, - {TK_OPTION_INT, "-insertofftime", "insertOffTime", "OffTime", - DEF_ENTRY_INSERT_OFF_TIME, -1, Tk_Offset(Entry, insertOffTime), - 0, 0, 0}, - {TK_OPTION_INT, "-insertontime", "insertOnTime", "OnTime", - DEF_ENTRY_INSERT_ON_TIME, -1, Tk_Offset(Entry, insertOnTime), 0, 0, 0}, - {TK_OPTION_PIXELS, "-insertwidth", "insertWidth", "InsertWidth", - DEF_ENTRY_INSERT_WIDTH, -1, Tk_Offset(Entry, insertWidth), 0, 0, 0}, - {TK_OPTION_STRING, "-invalidcommand", "invalidCommand", "InvalidCommand", - DEF_ENTRY_INVALIDCMD, -1, Tk_Offset(Entry, invalidCmd), - TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_SYNONYM, "-invcmd", NULL, NULL, - NULL, 0, -1, 0, "-invalidcommand", 0}, - {TK_OPTION_JUSTIFY, "-justify", "justify", "Justify", - DEF_ENTRY_JUSTIFY, -1, Tk_Offset(Entry, justify), 0, 0, 0}, - {TK_OPTION_RELIEF, "-relief", "relief", "Relief", - DEF_ENTRY_RELIEF, -1, Tk_Offset(Entry, relief), 0, 0, 0}, - {TK_OPTION_BORDER, "-readonlybackground", "readonlyBackground", - "ReadonlyBackground", DEF_ENTRY_READONLY_BG_COLOR, -1, - Tk_Offset(Entry, readonlyBorder), TK_OPTION_NULL_OK, - (ClientData) DEF_ENTRY_READONLY_BG_MONO, 0}, - {TK_OPTION_INT, "-repeatdelay", "repeatDelay", "RepeatDelay", - DEF_SPINBOX_REPEAT_DELAY, -1, Tk_Offset(Spinbox, repeatDelay), - 0, 0, 0}, - {TK_OPTION_INT, "-repeatinterval", "repeatInterval", "RepeatInterval", - DEF_SPINBOX_REPEAT_INTERVAL, -1, Tk_Offset(Spinbox, repeatInterval), - 0, 0, 0}, - {TK_OPTION_BORDER, "-selectbackground", "selectBackground", "Foreground", - DEF_ENTRY_SELECT_COLOR, -1, Tk_Offset(Entry, selBorder), - 0, DEF_ENTRY_SELECT_MONO, 0}, - {TK_OPTION_PIXELS, "-selectborderwidth", "selectBorderWidth", - "BorderWidth", DEF_ENTRY_SELECT_BD_COLOR, -1, - Tk_Offset(Entry, selBorderWidth), - 0, DEF_ENTRY_SELECT_BD_MONO, 0}, - {TK_OPTION_COLOR, "-selectforeground", "selectForeground", "Background", - DEF_ENTRY_SELECT_FG_COLOR, -1, Tk_Offset(Entry, selFgColorPtr), - TK_OPTION_NULL_OK, DEF_ENTRY_SELECT_FG_MONO, 0}, - {TK_OPTION_STRING_TABLE, "-state", "state", "State", - DEF_ENTRY_STATE, -1, Tk_Offset(Entry, state), - 0, stateStrings, 0}, - {TK_OPTION_STRING, "-takefocus", "takeFocus", "TakeFocus", - DEF_ENTRY_TAKE_FOCUS, -1, Tk_Offset(Entry, takeFocus), - TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_STRING, "-textvariable", "textVariable", "Variable", - DEF_ENTRY_TEXT_VARIABLE, -1, Tk_Offset(Entry, textVarName), - TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_DOUBLE, "-to", "to", "To", - DEF_SPINBOX_TO, -1, Tk_Offset(Spinbox, toValue), 0, 0, 0}, - {TK_OPTION_STRING_TABLE, "-validate", "validate", "Validate", - DEF_ENTRY_VALIDATE, -1, Tk_Offset(Entry, validate), - 0, validateStrings, 0}, - {TK_OPTION_STRING, "-validatecommand", "validateCommand","ValidateCommand", - NULL, -1, Tk_Offset(Entry, validateCmd), TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_STRING, "-values", "values", "Values", - DEF_SPINBOX_VALUES, -1, Tk_Offset(Spinbox, valueStr), - TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_SYNONYM, "-vcmd", NULL, NULL, - NULL, 0, -1, 0, "-validatecommand", 0}, - {TK_OPTION_INT, "-width", "width", "Width", - DEF_ENTRY_WIDTH, -1, Tk_Offset(Entry, prefWidth), 0, 0, 0}, - {TK_OPTION_BOOLEAN, "-wrap", "wrap", "Wrap", - DEF_SPINBOX_WRAP, -1, Tk_Offset(Spinbox, wrap), 0, 0, 0}, - {TK_OPTION_STRING, "-xscrollcommand", "xScrollCommand", "ScrollCommand", - DEF_ENTRY_SCROLL_COMMAND, -1, Tk_Offset(Entry, scrollCmd), - TK_OPTION_NULL_OK, 0, 0}, - {TK_OPTION_END, NULL, NULL, NULL, NULL, 0, -1, 0, 0, 0} -}; - -/* - * The following tables define the entry widget commands (and sub-commands) - * and map the indexes into the string tables into enumerated types used to - * dispatch the entry widget command. - */ - -static const char *const entryCmdNames[] = { - "bbox", "cget", "configure", "delete", "get", "icursor", "index", - "insert", "scan", "selection", "validate", "xview", NULL -}; - -enum entryCmd { - COMMAND_BBOX, COMMAND_CGET, COMMAND_CONFIGURE, COMMAND_DELETE, - COMMAND_GET, COMMAND_ICURSOR, COMMAND_INDEX, COMMAND_INSERT, - COMMAND_SCAN, COMMAND_SELECTION, COMMAND_VALIDATE, COMMAND_XVIEW -}; - -static const char *const selCmdNames[] = { - "adjust", "clear", "from", "present", "range", "to", NULL -}; - -enum selCmd { - SELECTION_ADJUST, SELECTION_CLEAR, SELECTION_FROM, - SELECTION_PRESENT, SELECTION_RANGE, SELECTION_TO -}; - -/* - * The following tables define the spinbox widget commands (and sub-commands) - * and map the indexes into the string tables into enumerated types used to - * dispatch the spinbox widget command. - */ - -static const char *const sbCmdNames[] = { - "bbox", "cget", "configure", "delete", "get", "icursor", "identify", - "index", "insert", "invoke", "scan", "selection", "set", - "validate", "xview", NULL -}; - -enum sbCmd { - SB_CMD_BBOX, SB_CMD_CGET, SB_CMD_CONFIGURE, SB_CMD_DELETE, - SB_CMD_GET, SB_CMD_ICURSOR, SB_CMD_IDENTIFY, SB_CMD_INDEX, - SB_CMD_INSERT, SB_CMD_INVOKE, SB_CMD_SCAN, SB_CMD_SELECTION, - SB_CMD_SET, SB_CMD_VALIDATE, SB_CMD_XVIEW -}; - -static const char *const sbSelCmdNames[] = { - "adjust", "clear", "element", "from", "present", "range", "to", NULL -}; - -enum sbselCmd { - SB_SEL_ADJUST, SB_SEL_CLEAR, SB_SEL_ELEMENT, SB_SEL_FROM, - SB_SEL_PRESENT, SB_SEL_RANGE, SB_SEL_TO -}; - -/* - * Extra for selection of elements - */ - -/* - * This is the string array corresponding to the enum in selelement. If you - * modify them, you must modify the strings here. - */ - -static const char *const selElementNames[] = { - "none", "buttondown", "buttonup", NULL, "entry" -}; - -/* - * Flags for GetEntryIndex function: - */ - -#define ZERO_OK 1 -#define LAST_PLUS_ONE_OK 2 - -/* - * Forward declarations for functions defined later in this file: - */ - -static int ConfigureEntry(Tcl_Interp *interp, Entry *entryPtr, - int objc, Tcl_Obj *const objv[]); -static int DeleteChars(Entry *entryPtr, int index, int count); -static void DestroyEntry(void *memPtr); -static void DisplayEntry(ClientData clientData); -static void EntryBlinkProc(ClientData clientData); -static void EntryCmdDeletedProc(ClientData clientData); -static void EntryComputeGeometry(Entry *entryPtr); -static void EntryEventProc(ClientData clientData, - XEvent *eventPtr); -static void EntryFocusProc(Entry *entryPtr, int gotFocus); -static int EntryFetchSelection(ClientData clientData, int offset, - char *buffer, int maxBytes); -static void EntryLostSelection(ClientData clientData); -static void EventuallyRedraw(Entry *entryPtr); -static void EntryScanTo(Entry *entryPtr, int y); -static void EntrySetValue(Entry *entryPtr, const char *value); -static void EntrySelectTo(Entry *entryPtr, int index); -static char * EntryTextVarProc(ClientData clientData, - Tcl_Interp *interp, const char *name1, - const char *name2, int flags); -static void EntryUpdateScrollbar(Entry *entryPtr); -static int EntryValidate(Entry *entryPtr, char *cmd); -static int EntryValidateChange(Entry *entryPtr, const char *change, - const char *newStr, int index, int type); -static void ExpandPercents(Entry *entryPtr, const char *before, - const char *change, const char *newStr, int index, - int type, Tcl_DString *dsPtr); -static int EntryValueChanged(Entry *entryPtr, - const char *newValue); -static void EntryVisibleRange(Entry *entryPtr, - double *firstPtr, double *lastPtr); -static int EntryWidgetObjCmd(ClientData clientData, - Tcl_Interp *interp, int objc, - Tcl_Obj *const objv[]); -static void EntryWorldChanged(ClientData instanceData); -static int GetEntryIndex(Tcl_Interp *interp, Entry *entryPtr, - const char *string, int *indexPtr); -static int InsertChars(Entry *entryPtr, int index, const char *string); - -/* - * These forward declarations are the spinbox specific ones: - */ - -static int SpinboxWidgetObjCmd(ClientData clientData, - Tcl_Interp *interp, int objc, - Tcl_Obj *const objv[]); -static int GetSpinboxElement(Spinbox *sbPtr, int x, int y); -static int SpinboxInvoke(Tcl_Interp *interp, Spinbox *sbPtr, - int element); -static int ComputeFormat(Spinbox *sbPtr); - -/* - * The structure below defines widget class behavior by means of functions - * that can be invoked from generic window code. - */ - -static const Tk_ClassProcs entryClass = { - sizeof(Tk_ClassProcs), /* size */ - EntryWorldChanged, /* worldChangedProc */ - NULL, /* createProc */ - NULL /* modalProc */ -}; - -/* - *-------------------------------------------------------------- - * - * Tk_EntryObjCmd -- - * - * This function is invoked to process the "entry" Tcl command. See the - * user documentation for details on what it does. - * - * Results: - * A standard Tcl result. - * - * Side effects: - * See the user documentation. - * - *-------------------------------------------------------------- - */ - -int -Tk_EntryObjCmd( - ClientData clientData, /* NULL. */ - Tcl_Interp *interp, /* Current interpreter. */ - int objc, /* Number of arguments. */ - Tcl_Obj *const objv[]) /* Argument objects. */ -{ - register Entry *entryPtr; - Tk_OptionTable optionTable; - Tk_Window tkwin; - char *tmp; - - if (objc < 2) { - Tcl_WrongNumArgs(interp, 1, objv, "pathName ?-option value ...?"); - return TCL_ERROR; - } - - tkwin = Tk_CreateWindowFromPath(interp, Tk_MainWindow(interp), - Tcl_GetString(objv[1]), NULL); - if (tkwin == NULL) { - return TCL_ERROR; - } - - /* - * Create the option table for this widget class. If it has already been - * created, Tk will return the cached value. - */ - - optionTable = Tk_CreateOptionTable(interp, entryOptSpec); - - /* - * Initialize the fields of the structure that won't be initialized by - * ConfigureEntry, or that ConfigureEntry requires to be initialized - * already (e.g. resource pointers). Only the non-NULL/0 data must be - * initialized as memset covers the rest. - */ - - entryPtr = ckalloc(sizeof(Entry)); - memset(entryPtr, 0, sizeof(Entry)); - - entryPtr->tkwin = tkwin; - entryPtr->display = Tk_Display(tkwin); - entryPtr->interp = interp; - entryPtr->widgetCmd = Tcl_CreateObjCommand(interp, - Tk_PathName(entryPtr->tkwin), EntryWidgetObjCmd, entryPtr, - EntryCmdDeletedProc); - entryPtr->optionTable = optionTable; - entryPtr->type = TK_ENTRY; - tmp = ckalloc(1); - tmp[0] = '\0'; - entryPtr->string = tmp; - entryPtr->selectFirst = -1; - entryPtr->selectLast = -1; - - entryPtr->cursor = None; - entryPtr->exportSelection = 1; - entryPtr->justify = TK_JUSTIFY_LEFT; - entryPtr->relief = TK_RELIEF_FLAT; - entryPtr->state = STATE_NORMAL; - entryPtr->displayString = entryPtr->string; - entryPtr->inset = XPAD; - entryPtr->textGC = None; - entryPtr->selTextGC = None; - entryPtr->highlightGC = None; - entryPtr->avgWidth = 1; - entryPtr->validate = VALIDATE_NONE; - - /* - * Keep a hold of the associated tkwin until we destroy the entry, - * otherwise Tk might free it while we still need it. - */ - - Tcl_Preserve(entryPtr->tkwin); - - Tk_SetClass(entryPtr->tkwin, "Entry"); - Tk_SetClassProcs(entryPtr->tkwin, &entryClass, entryPtr); - Tk_CreateEventHandler(entryPtr->tkwin, - ExposureMask|StructureNotifyMask|FocusChangeMask, - EntryEventProc, entryPtr); - Tk_CreateSelHandler(entryPtr->tkwin, XA_PRIMARY, XA_STRING, - EntryFetchSelection, entryPtr, XA_STRING); - - if ((Tk_InitOptions(interp, (char *) entryPtr, optionTable, tkwin) - != TCL_OK) || - (ConfigureEntry(interp, entryPtr, objc-2, objv+2) != TCL_OK)) { - Tk_DestroyWindow(entryPtr->tkwin); - return TCL_ERROR; - } - - Tcl_SetObjResult(interp, TkNewWindowObj(entryPtr->tkwin)); - return TCL_OK; -} - -/* - *-------------------------------------------------------------- - * - * EntryWidgetObjCmd -- - * - * This function is invoked to process the Tcl command that corresponds - * to a widget managed by this module. See the user documentation for - * details on what it does. - * - * Results: - * A standard Tcl result. - * - * Side effects: - * See the user documentation. - * - *-------------------------------------------------------------- - */ - -static int -EntryWidgetObjCmd( - ClientData clientData, /* Information about entry widget. */ - Tcl_Interp *interp, /* Current interpreter. */ - int objc, /* Number of arguments. */ - Tcl_Obj *const objv[]) /* Argument objects. */ -{ - Entry *entryPtr = clientData; - int cmdIndex, selIndex, result; - Tcl_Obj *objPtr; - - if (objc < 2) { - Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?"); - return TCL_ERROR; - } - - /* - * Parse the widget command by looking up the second token in the list of - * valid command names. - */ - - result = Tcl_GetIndexFromObj(interp, objv[1], entryCmdNames, "option", 0, - &cmdIndex); - if (result != TCL_OK) { - return result; - } - - Tcl_Preserve(entryPtr); - switch ((enum entryCmd) cmdIndex) { - case COMMAND_BBOX: { - int index, x, y, width, height; - Tcl_Obj *bbox[4]; - - if (objc != 3) { - Tcl_WrongNumArgs(interp, 2, objv, "index"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]), - &index) != TCL_OK) { - goto error; - } - if ((index == entryPtr->numChars) && (index > 0)) { - index--; - } - Tk_CharBbox(entryPtr->textLayout, index, &x, &y, &width, &height); - bbox[0] = Tcl_NewIntObj(x + entryPtr->layoutX); - bbox[1] = Tcl_NewIntObj(y + entryPtr->layoutY); - bbox[2] = Tcl_NewIntObj(width); - bbox[3] = Tcl_NewIntObj(height); - Tcl_SetObjResult(interp, Tcl_NewListObj(4, bbox)); - break; - } - - case COMMAND_CGET: - if (objc != 3) { - Tcl_WrongNumArgs(interp, 2, objv, "option"); - goto error; - } - - objPtr = Tk_GetOptionValue(interp, (char *) entryPtr, - entryPtr->optionTable, objv[2], entryPtr->tkwin); - if (objPtr == NULL) { - goto error; - } - Tcl_SetObjResult(interp, objPtr); - break; - - case COMMAND_CONFIGURE: - if (objc <= 3) { - objPtr = Tk_GetOptionInfo(interp, (char *) entryPtr, - entryPtr->optionTable, - (objc == 3) ? objv[2] : NULL, - entryPtr->tkwin); - if (objPtr == NULL) { - goto error; - } - Tcl_SetObjResult(interp, objPtr); - } else { - result = ConfigureEntry(interp, entryPtr, objc-2, objv+2); - } - break; - - case COMMAND_DELETE: { - int first, last, code; - - if ((objc < 3) || (objc > 4)) { - Tcl_WrongNumArgs(interp, 2, objv, "firstIndex ?lastIndex?"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]), - &first) != TCL_OK) { - goto error; - } - if (objc == 3) { - last = first + 1; - } else if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[3]), - &last) != TCL_OK) { - goto error; - } - if ((last >= first) && (entryPtr->state == STATE_NORMAL)) { - code = DeleteChars(entryPtr, first, last - first); - if (code != TCL_OK) { - goto error; - } - } - break; - } - - case COMMAND_GET: - if (objc != 2) { - Tcl_WrongNumArgs(interp, 2, objv, NULL); - goto error; - } - Tcl_SetObjResult(interp, Tcl_NewStringObj(entryPtr->string, -1)); - break; - - case COMMAND_ICURSOR: - if (objc != 3) { - Tcl_WrongNumArgs(interp, 2, objv, "pos"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]), - &entryPtr->insertPos) != TCL_OK) { - goto error; - } - EventuallyRedraw(entryPtr); - break; - - case COMMAND_INDEX: { - int index; - - if (objc != 3) { - Tcl_WrongNumArgs(interp, 2, objv, "string"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]), - &index) != TCL_OK) { - goto error; - } - Tcl_SetObjResult(interp, Tcl_NewIntObj(index)); - break; - } - - case COMMAND_INSERT: { - int index, code; - - if (objc != 4) { - Tcl_WrongNumArgs(interp, 2, objv, "index text"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]), - &index) != TCL_OK) { - goto error; - } - if (entryPtr->state == STATE_NORMAL) { - code = InsertChars(entryPtr, index, Tcl_GetString(objv[3])); - if (code != TCL_OK) { - goto error; - } - } - break; - } - - case COMMAND_SCAN: { - int x; - const char *minorCmd; - - if (objc != 4) { - Tcl_WrongNumArgs(interp, 2, objv, "mark|dragto x"); - goto error; - } - if (Tcl_GetIntFromObj(interp, objv[3], &x) != TCL_OK) { - goto error; - } - - minorCmd = Tcl_GetString(objv[2]); - if (minorCmd[0] == 'm' - && (strncmp(minorCmd, "mark", strlen(minorCmd)) == 0)) { - entryPtr->scanMarkX = x; - entryPtr->scanMarkIndex = entryPtr->leftIndex; - } else if ((minorCmd[0] == 'd') - && (strncmp(minorCmd, "dragto", strlen(minorCmd)) == 0)) { - EntryScanTo(entryPtr, x); - } else { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "bad scan option \"%s\": must be mark or dragto", - minorCmd)); - Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "INDEX", "scan option", - minorCmd, NULL); - goto error; - } - break; - } - - case COMMAND_SELECTION: { - int index, index2; - - if (objc < 3) { - Tcl_WrongNumArgs(interp, 2, objv, "option ?index?"); - goto error; - } - - /* - * Parse the selection sub-command, using the command table - * "selCmdNames" defined above. - */ - - result = Tcl_GetIndexFromObj(interp, objv[2], selCmdNames, - "selection option", 0, &selIndex); - if (result != TCL_OK) { - goto error; - } - - /* - * Disabled entries don't allow the selection to be modified, but - * 'selection present' must return a boolean. - */ - - if ((entryPtr->state == STATE_DISABLED) - && (selIndex != SELECTION_PRESENT)) { - goto done; - } - - switch (selIndex) { - case SELECTION_ADJUST: - if (objc != 4) { - Tcl_WrongNumArgs(interp, 3, objv, "index"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, - Tcl_GetString(objv[3]), &index) != TCL_OK) { - goto error; - } - if (entryPtr->selectFirst >= 0) { - int half1, half2; - - half1 = (entryPtr->selectFirst + entryPtr->selectLast)/2; - half2 = (entryPtr->selectFirst + entryPtr->selectLast + 1)/2; - if (index < half1) { - entryPtr->selectAnchor = entryPtr->selectLast; - } else if (index > half2) { - entryPtr->selectAnchor = entryPtr->selectFirst; - } else { - /* - * We're at about the halfway point in the selection; just - * keep the existing anchor. - */ - } - } - EntrySelectTo(entryPtr, index); - break; - - case SELECTION_CLEAR: - if (objc != 3) { - Tcl_WrongNumArgs(interp, 3, objv, NULL); - goto error; - } - if (entryPtr->selectFirst >= 0) { - entryPtr->selectFirst = -1; - entryPtr->selectLast = -1; - EventuallyRedraw(entryPtr); - } - goto done; - - case SELECTION_FROM: - if (objc != 4) { - Tcl_WrongNumArgs(interp, 3, objv, "index"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, - Tcl_GetString(objv[3]), &index) != TCL_OK) { - goto error; - } - entryPtr->selectAnchor = index; - break; - - case SELECTION_PRESENT: - if (objc != 3) { - Tcl_WrongNumArgs(interp, 3, objv, NULL); - goto error; - } - Tcl_SetObjResult(interp, - Tcl_NewBooleanObj(entryPtr->selectFirst >= 0)); - goto done; - - case SELECTION_RANGE: - if (objc != 5) { - Tcl_WrongNumArgs(interp, 3, objv, "start end"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[3]), - &index) != TCL_OK) { - goto error; - } - if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[4]), - &index2) != TCL_OK) { - goto error; - } - if (index >= index2) { - entryPtr->selectFirst = -1; - entryPtr->selectLast = -1; - } else { - entryPtr->selectFirst = index; - entryPtr->selectLast = index2; - } - if (!(entryPtr->flags & GOT_SELECTION) - && (entryPtr->exportSelection)) { - Tk_OwnSelection(entryPtr->tkwin, XA_PRIMARY, - EntryLostSelection, entryPtr); - entryPtr->flags |= GOT_SELECTION; - } - EventuallyRedraw(entryPtr); - break; - - case SELECTION_TO: - if (objc != 4) { - Tcl_WrongNumArgs(interp, 3, objv, "index"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, - Tcl_GetString(objv[3]), &index) != TCL_OK) { - goto error; - } - EntrySelectTo(entryPtr, index); - break; - } - break; - } - - case COMMAND_VALIDATE: { - int code; - - if (objc != 2) { - Tcl_WrongNumArgs(interp, 2, objv, NULL); - goto error; - } - selIndex = entryPtr->validate; - entryPtr->validate = VALIDATE_ALL; - code = EntryValidateChange(entryPtr, NULL, entryPtr->string, - -1, VALIDATE_FORCED); - if (entryPtr->validate != VALIDATE_NONE) { - entryPtr->validate = selIndex; - } - Tcl_SetObjResult(interp, Tcl_NewBooleanObj(code == TCL_OK)); - break; - } - - case COMMAND_XVIEW: { - int index; - - if (objc == 2) { - double first, last; - Tcl_Obj *span[2]; - - EntryVisibleRange(entryPtr, &first, &last); - span[0] = Tcl_NewDoubleObj(first); - span[1] = Tcl_NewDoubleObj(last); - Tcl_SetObjResult(interp, Tcl_NewListObj(2, span)); - goto done; - } else if (objc == 3) { - if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]), - &index) != TCL_OK) { - goto error; - } - } else { - double fraction; - int count; - - index = entryPtr->leftIndex; - switch (Tk_GetScrollInfoObj(interp, objc, objv, &fraction, - &count)) { - case TK_SCROLL_ERROR: - goto error; - case TK_SCROLL_MOVETO: - index = (int) ((fraction * entryPtr->numChars) + 0.5); - break; - case TK_SCROLL_PAGES: { - int charsPerPage; - - charsPerPage = ((Tk_Width(entryPtr->tkwin) - - 2 * entryPtr->inset) / entryPtr->avgWidth) - 2; - if (charsPerPage < 1) { - charsPerPage = 1; - } - index += count * charsPerPage; - break; - } - case TK_SCROLL_UNITS: - index += count; - break; - } - } - if (index >= entryPtr->numChars) { - index = entryPtr->numChars - 1; - } - if (index < 0) { - index = 0; - } - entryPtr->leftIndex = index; - entryPtr->flags |= UPDATE_SCROLLBAR; - EntryComputeGeometry(entryPtr); - EventuallyRedraw(entryPtr); - break; - } - } - - done: - Tcl_Release(entryPtr); - return result; - - error: - Tcl_Release(entryPtr); - return TCL_ERROR; -} - -/* - *---------------------------------------------------------------------- - * - * DestroyEntry -- - * - * This function is invoked by Tcl_EventuallyFree or Tcl_Release to clean - * up the internal structure of an entry at a safe time (when no-one is - * using it anymore). - * - * Results: - * None. - * - * Side effects: - * Everything associated with the entry is freed up. - * - *---------------------------------------------------------------------- - */ - -static void -DestroyEntry( - void *memPtr) /* Info about entry widget. */ -{ - Entry *entryPtr = memPtr; - - /* - * Free up all the stuff that requires special handling, then let - * Tk_FreeOptions handle all the standard option-related stuff. - */ - - ckfree((char *)entryPtr->string); - if (entryPtr->textVarName != NULL) { - Tcl_UntraceVar2(entryPtr->interp, entryPtr->textVarName, - NULL, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS, - EntryTextVarProc, entryPtr); - entryPtr->flags &= ~ENTRY_VAR_TRACED; - } - if (entryPtr->textGC != None) { - Tk_FreeGC(entryPtr->display, entryPtr->textGC); - } - if (entryPtr->selTextGC != None) { - Tk_FreeGC(entryPtr->display, entryPtr->selTextGC); - } - Tcl_DeleteTimerHandler(entryPtr->insertBlinkHandler); - if (entryPtr->displayString != entryPtr->string) { - ckfree((char *)entryPtr->displayString); - } - if (entryPtr->type == TK_SPINBOX) { - Spinbox *sbPtr = (Spinbox *) entryPtr; - - if (sbPtr->listObj != NULL) { - Tcl_DecrRefCount(sbPtr->listObj); - sbPtr->listObj = NULL; - } - if (sbPtr->formatBuf) { - ckfree(sbPtr->formatBuf); - } - } - Tk_FreeTextLayout(entryPtr->textLayout); - Tk_FreeConfigOptions((char *) entryPtr, entryPtr->optionTable, - entryPtr->tkwin); - Tcl_Release(entryPtr->tkwin); - entryPtr->tkwin = NULL; - - ckfree(entryPtr); -} - -/* - *---------------------------------------------------------------------- - * - * ConfigureEntry -- - * - * This function is called to process an argv/argc list, plus the Tk - * option database, in order to configure (or reconfigure) an entry - * widget. - * - * Results: - * The return value is a standard Tcl result. If TCL_ERROR is returned, - * then the interp's result contains an error message. - * - * Side effects: - * Configuration information, such as colors, border width, etc. get set - * for entryPtr; old resources get freed, if there were any. - * - *---------------------------------------------------------------------- - */ - -static int -ConfigureEntry( - Tcl_Interp *interp, /* Used for error reporting. */ - Entry *entryPtr, /* Information about widget; may or may not - * already have values for some fields. */ - int objc, /* Number of valid entries in argv. */ - Tcl_Obj *const objv[]) /* Argument objects. */ -{ - Tk_SavedOptions savedOptions; - Tk_3DBorder border; - Tcl_Obj *errorResult = NULL; - Spinbox *sbPtr = (Spinbox *) entryPtr; - /* Only used when this widget is of type - * TK_SPINBOX */ - char *oldValues = NULL; /* lint initialization */ - char *oldFormat = NULL; /* lint initialization */ - int error; - int oldExport = 0; /* lint initialization */ - int valuesChanged = 0; /* lint initialization */ - double oldFrom = 0.0; /* lint initialization */ - double oldTo = 0.0; /* lint initialization */ - int code; - - /* - * Eliminate any existing trace on a variable monitored by the entry. - */ - - if ((entryPtr->textVarName != NULL) - && (entryPtr->flags & ENTRY_VAR_TRACED)) { - Tcl_UntraceVar2(interp, entryPtr->textVarName, NULL, - TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS, - EntryTextVarProc, entryPtr); - entryPtr->flags &= ~ENTRY_VAR_TRACED; - } - - /* - * Store old values that we need to effect certain behavior if they change - * value. - */ - - oldExport = entryPtr->exportSelection; - if (entryPtr->type == TK_SPINBOX) { - oldValues = sbPtr->valueStr; - oldFormat = sbPtr->reqFormat; - oldFrom = sbPtr->fromValue; - oldTo = sbPtr->toValue; - } - - for (error = 0; error <= 1; error++) { - if (!error) { - /* - * First pass: set options to new values. - */ - - if (Tk_SetOptions(interp, (char *) entryPtr, - entryPtr->optionTable, objc, objv, - entryPtr->tkwin, &savedOptions, NULL) != TCL_OK) { - continue; - } - } else { - /* - * Second pass: restore options to old values. - */ - - errorResult = Tcl_GetObjResult(interp); - Tcl_IncrRefCount(errorResult); - Tk_RestoreSavedOptions(&savedOptions); - } - - /* - * A few other options also need special processing, such as parsing - * the geometry and setting the background from a 3-D border. - */ - - if ((entryPtr->state == STATE_DISABLED) && - (entryPtr->disabledBorder != NULL)) { - border = entryPtr->disabledBorder; - } else if ((entryPtr->state == STATE_READONLY) && - (entryPtr->readonlyBorder != NULL)) { - border = entryPtr->readonlyBorder; - } else { - border = entryPtr->normalBorder; - } - Tk_SetBackgroundFromBorder(entryPtr->tkwin, border); - - if (entryPtr->insertWidth <= 0) { - entryPtr->insertWidth = 2; - } - if (entryPtr->insertBorderWidth > entryPtr->insertWidth/2) { - entryPtr->insertBorderWidth = entryPtr->insertWidth/2; - } - - if (entryPtr->type == TK_SPINBOX) { - if (sbPtr->fromValue > sbPtr->toValue) { - Tcl_SetObjResult(interp, Tcl_NewStringObj( - "-to value must be greater than -from value", - -1)); - Tcl_SetErrorCode(interp, "TK", "SPINBOX", "RANGE_SANITY", - NULL); - continue; - } - - if (sbPtr->reqFormat && (oldFormat != sbPtr->reqFormat)) { - /* - * Make sure that the given format is somewhat correct, and - * calculate the minimum space we'll need for the values as - * strings. - */ - - int min, max; - size_t formatLen, formatSpace = TCL_DOUBLE_SPACE; - char fbuf[4], *fmt = sbPtr->reqFormat; - - formatLen = strlen(fmt); - if ((fmt[0] != '%') || (fmt[formatLen-1] != 'f')) { - badFormatOpt: - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "bad spinbox format specifier \"%s\"", - sbPtr->reqFormat)); - Tcl_SetErrorCode(interp, "TK", "SPINBOX", "FORMAT_SANITY", - NULL); - continue; - } - if ((sscanf(fmt, "%%%d.%d%[f]", &min, &max, fbuf) == 3) - && (max >= 0)) { - formatSpace = min + max + 1; - } else if (((sscanf(fmt, "%%.%d%[f]", &min, fbuf) == 2) - || (sscanf(fmt, "%%%d%[f]", &min, fbuf) == 2) - || (sscanf(fmt, "%%%d.%[f]", &min, fbuf) == 2)) - && (min >= 0)) { - formatSpace = min + 1; - } else { - goto badFormatOpt; - } - if (formatSpace < TCL_DOUBLE_SPACE) { - formatSpace = TCL_DOUBLE_SPACE; - } - sbPtr->formatBuf = ckrealloc(sbPtr->formatBuf, formatSpace); - - /* - * We perturb the value of oldFrom to allow us to go into the - * branch below that will reformat the displayed value. - */ - - oldFrom = sbPtr->fromValue - 1; - } - - /* - * See if we have to rearrange our listObj data. - */ - - if (oldValues != sbPtr->valueStr) { - if (sbPtr->listObj != NULL) { - Tcl_DecrRefCount(sbPtr->listObj); - } - sbPtr->listObj = NULL; - if (sbPtr->valueStr != NULL) { - Tcl_Obj *newObjPtr; - int nelems; - - newObjPtr = Tcl_NewStringObj(sbPtr->valueStr, -1); - if (Tcl_ListObjLength(interp, newObjPtr, &nelems) - != TCL_OK) { - valuesChanged = -1; - continue; - } - sbPtr->listObj = newObjPtr; - Tcl_IncrRefCount(sbPtr->listObj); - sbPtr->nElements = nelems; - sbPtr->eIndex = 0; - valuesChanged++; - } - } - } - - /* - * Restart the cursor timing sequence in case the on-time or off-time - * just changed. Set validate temporarily to none, so the configure - * doesn't cause it to be triggered. - */ - - if (entryPtr->flags & GOT_FOCUS) { - int validate = entryPtr->validate; - - entryPtr->validate = VALIDATE_NONE; - EntryFocusProc(entryPtr, 1); - entryPtr->validate = validate; - } - - /* - * Claim the selection if we've suddenly started exporting it. - */ - - if (entryPtr->exportSelection && (!oldExport) - && (entryPtr->selectFirst != -1) - && !(entryPtr->flags & GOT_SELECTION)) { - Tk_OwnSelection(entryPtr->tkwin, XA_PRIMARY, EntryLostSelection, - entryPtr); - entryPtr->flags |= GOT_SELECTION; - } - - /* - * Recompute the window's geometry and arrange for it to be - * redisplayed. - */ - - Tk_SetInternalBorder(entryPtr->tkwin, - entryPtr->borderWidth + entryPtr->highlightWidth); - if (entryPtr->highlightWidth <= 0) { - entryPtr->highlightWidth = 0; - } - entryPtr->inset = entryPtr->highlightWidth - + entryPtr->borderWidth + XPAD; - break; - } - if (!error) { - Tk_FreeSavedOptions(&savedOptions); - } - - /* - * If the entry is tied to the value of a variable, create the variable if - * it doesn't exist, and set the entry's value from the variable's value. - */ - - if (entryPtr->textVarName != NULL) { - const char *value; - - value = Tcl_GetVar2(interp, entryPtr->textVarName, NULL, TCL_GLOBAL_ONLY); - if (value == NULL) { - - /* - * Since any trace on the textvariable was eliminated above, - * the only possible reason for EntryValueChanged to return - * an error is that the textvariable lives in a namespace - * that does not (yet) exist. Indeed, namespaces are not - * automatically created as needed. Don't trap this error - * here, better do it below when attempting to trace the - * variable. - */ - - EntryValueChanged(entryPtr, NULL); - } else { - EntrySetValue(entryPtr, value); - } - } - - if (entryPtr->type == TK_SPINBOX) { - ComputeFormat(sbPtr); - - if (valuesChanged > 0) { - Tcl_Obj *objPtr; - - /* - * No check for error return, because there shouldn't be one given - * the check for valid list above. - */ - - Tcl_ListObjIndex(interp, sbPtr->listObj, 0, &objPtr); - - /* - * No check for error return here as well, because any possible - * error will be trapped below when attempting tracing. - */ - - EntryValueChanged(entryPtr, Tcl_GetString(objPtr)); - } else if ((sbPtr->valueStr == NULL) - && !DOUBLES_EQ(sbPtr->fromValue, sbPtr->toValue) - && (!DOUBLES_EQ(sbPtr->fromValue, oldFrom) - || !DOUBLES_EQ(sbPtr->toValue, oldTo))) { - /* - * If the valueStr is empty and -from && -to are specified, check - * to see if the current string is within the range. If not, it - * will be constrained to the nearest edge. If the current string - * isn't a double value, we set it to -from. - */ - - double dvalue; - - if (sscanf(entryPtr->string, "%lf", &dvalue) <= 0) { - /* Scan failure */ - dvalue = sbPtr->fromValue; - } else if (dvalue > sbPtr->toValue) { - dvalue = sbPtr->toValue; - } else if (dvalue < sbPtr->fromValue) { - dvalue = sbPtr->fromValue; - } - sprintf(sbPtr->formatBuf, sbPtr->valueFormat, dvalue); - - /* - * No check for error return here as well, because any possible - * error will be trapped below when attempting tracing. - */ - - EntryValueChanged(entryPtr, sbPtr->formatBuf); - } - } - - /* - * Set up a trace on the variable's value after we've possibly constrained - * the value according to new -from/-to values. - */ - - if ((entryPtr->textVarName != NULL) - && !(entryPtr->flags & ENTRY_VAR_TRACED)) { - code = Tcl_TraceVar2(interp, entryPtr->textVarName, - NULL, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS, - EntryTextVarProc, entryPtr); - if (code != TCL_OK) { - return TCL_ERROR; - } - entryPtr->flags |= ENTRY_VAR_TRACED; - } - - EntryWorldChanged(entryPtr); - if (error) { - Tcl_SetObjResult(interp, errorResult); - Tcl_DecrRefCount(errorResult); - return TCL_ERROR; - } else { - return TCL_OK; - } -} - -/* - *--------------------------------------------------------------------------- - * - * EntryWorldChanged -- - * - * This function is called when the world has changed in some way and the - * widget needs to recompute all its graphics contexts and determine its - * new geometry. - * - * Results: - * None. - * - * Side effects: - * Entry will be relayed out and redisplayed. - * - *--------------------------------------------------------------------------- - */ - -static void -EntryWorldChanged( - ClientData instanceData) /* Information about widget. */ -{ - XGCValues gcValues; - GC gc = None; - unsigned long mask; - Tk_3DBorder border; - XColor *colorPtr; - Entry *entryPtr = instanceData; - - entryPtr->avgWidth = Tk_TextWidth(entryPtr->tkfont, "0", 1); - if (entryPtr->avgWidth == 0) { - entryPtr->avgWidth = 1; - } - - if (entryPtr->type == TK_SPINBOX) { - /* - * Compute the button width for a spinbox - */ - - entryPtr->xWidth = entryPtr->avgWidth + 2 * (1+XPAD); - if (entryPtr->xWidth < 11) { - entryPtr->xWidth = 11; /* we want a min visible size */ - } - } - - /* - * Default background and foreground are from the normal state. In a - * disabled state, both of those may be overridden; in the readonly state, - * the background may be overridden. - */ - - border = entryPtr->normalBorder; - colorPtr = entryPtr->fgColorPtr; - switch (entryPtr->state) { - case STATE_DISABLED: - if (entryPtr->disabledBorder != NULL) { - border = entryPtr->disabledBorder; - } - if (entryPtr->dfgColorPtr != NULL) { - colorPtr = entryPtr->dfgColorPtr; - } - break; - case STATE_READONLY: - if (entryPtr->readonlyBorder != NULL) { - border = entryPtr->readonlyBorder; - } - break; - } - - Tk_SetBackgroundFromBorder(entryPtr->tkwin, border); - gcValues.foreground = colorPtr->pixel; - gcValues.font = Tk_FontId(entryPtr->tkfont); - gcValues.graphics_exposures = False; - mask = GCForeground | GCFont | GCGraphicsExposures; - gc = Tk_GetGC(entryPtr->tkwin, mask, &gcValues); - if (entryPtr->textGC != None) { - Tk_FreeGC(entryPtr->display, entryPtr->textGC); - } - entryPtr->textGC = gc; - - if (entryPtr->selFgColorPtr != NULL) { - gcValues.foreground = entryPtr->selFgColorPtr->pixel; - } - gcValues.font = Tk_FontId(entryPtr->tkfont); - mask = GCForeground | GCFont; - gc = Tk_GetGC(entryPtr->tkwin, mask, &gcValues); - if (entryPtr->selTextGC != None) { - Tk_FreeGC(entryPtr->display, entryPtr->selTextGC); - } - entryPtr->selTextGC = gc; - - /* - * Recompute the window's geometry and arrange for it to be redisplayed. - */ - - EntryComputeGeometry(entryPtr); - entryPtr->flags |= UPDATE_SCROLLBAR; - EventuallyRedraw(entryPtr); -} - -#ifndef MAC_OSX_TK -/* - *-------------------------------------------------------------- - * - * TkpDrawEntryBorderAndFocus -- - * - * This function redraws the border of an entry widget. It overrides the - * generic border drawing code if the entry widget parameters are such - * that the native widget drawing is a good fit. This version just - * returns 0, so platforms that don't do special native drawing don't - * have to implement it. - * - * Results: - * 1 if it has drawn the border, 0 if not. - * - * Side effects: - * May draw the entry border into pixmap. - * - *-------------------------------------------------------------- - */ - -int -TkpDrawEntryBorderAndFocus( - Entry *entryPtr, - Drawable pixmap, - int isSpinbox) -{ - return 0; -} - -/* - *-------------------------------------------------------------- - * - * TkpDrawSpinboxButtons -- - * - * This function redraws the buttons of an spinbox widget. It overrides - * the generic button drawing code if the spinbox widget parameters are - * such that the native widget drawing is a good fit. This version just - * returns 0, so platforms that don't do special native drawing don't - * have to implement it. - * - * Results: - * 1 if it has drawn the border, 0 if not. - * - * Side effects: - * May draw the entry border into pixmap. - * - *-------------------------------------------------------------- - */ - -int -TkpDrawSpinboxButtons( - Spinbox *sbPtr, - Pixmap pixmap) -{ - return 0; -} -#endif /* Not MAC_OSX_TK */ - -/* - *-------------------------------------------------------------- - * - * DisplayEntry -- - * - * This function redraws the contents of an entry window. - * - * Results: - * None. - * - * Side effects: - * Information appears on the screen. - * - *-------------------------------------------------------------- - */ - -static void -DisplayEntry( - ClientData clientData) /* Information about window. */ -{ - Entry *entryPtr = clientData; - Tk_Window tkwin = entryPtr->tkwin; - int baseY, selStartX, selEndX, cursorX; - int showSelection, xBound; - Tk_FontMetrics fm; - Pixmap pixmap; - Tk_3DBorder border; - - entryPtr->flags &= ~REDRAW_PENDING; - if ((entryPtr->flags & ENTRY_DELETED) || !Tk_IsMapped(tkwin)) { - return; - } - - Tk_GetFontMetrics(entryPtr->tkfont, &fm); - - /* - * Update the scrollbar if that's needed. - */ - - if (entryPtr->flags & UPDATE_SCROLLBAR) { - entryPtr->flags &= ~UPDATE_SCROLLBAR; - - /* - * Preserve/Release because updating the scrollbar can have the - * side-effect of destroying or unmapping the entry widget. - */ - - Tcl_Preserve(entryPtr); - EntryUpdateScrollbar(entryPtr); - - if ((entryPtr->flags & ENTRY_DELETED) || !Tk_IsMapped(tkwin)) { - Tcl_Release(entryPtr); - return; - } - Tcl_Release(entryPtr); - } - -#ifndef TK_NO_DOUBLE_BUFFERING - /* - * In order to avoid screen flashes, this function redraws the textual - * area of the entry into off-screen memory, then copies it back on-screen - * in a single operation. This means there's no point in time where the - * on-screen image has been cleared. - */ - - pixmap = Tk_GetPixmap(entryPtr->display, Tk_WindowId(tkwin), - Tk_Width(tkwin), Tk_Height(tkwin), Tk_Depth(tkwin)); -#else - pixmap = Tk_WindowId(tkwin); -#endif /* TK_NO_DOUBLE_BUFFERING */ - - /* - * Compute x-coordinate of the pixel just after last visible one, plus - * vertical position of baseline of text. - */ - - xBound = Tk_Width(tkwin) - entryPtr->inset - entryPtr->xWidth; - baseY = (Tk_Height(tkwin) + fm.ascent - fm.descent) / 2; - - /* - * Hide the selection whenever we don't have the focus, unless we - * always want to show selection. - */ - if (TkpAlwaysShowSelection(entryPtr->tkwin)) { - showSelection = 1; - } else { - showSelection = (entryPtr->flags & GOT_FOCUS); - } - - /* - * Draw the background in three layers. From bottom to top the layers are: - * normal background, selection background, and insertion cursor - * background. - */ - - if ((entryPtr->state == STATE_DISABLED) && - (entryPtr->disabledBorder != NULL)) { - border = entryPtr->disabledBorder; - } else if ((entryPtr->state == STATE_READONLY) && - (entryPtr->readonlyBorder != NULL)) { - border = entryPtr->readonlyBorder; - } else { - border = entryPtr->normalBorder; - } - Tk_Fill3DRectangle(tkwin, pixmap, border, - 0, 0, Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT); - - if (showSelection && (entryPtr->state != STATE_DISABLED) - && (entryPtr->selectLast > entryPtr->leftIndex)) { - if (entryPtr->selectFirst <= entryPtr->leftIndex) { - selStartX = entryPtr->leftX; - } else { - Tk_CharBbox(entryPtr->textLayout, entryPtr->selectFirst, - &selStartX, NULL, NULL, NULL); - selStartX += entryPtr->layoutX; - } - if ((selStartX - entryPtr->selBorderWidth) < xBound) { - Tk_CharBbox(entryPtr->textLayout, entryPtr->selectLast, - &selEndX, NULL, NULL, NULL); - selEndX += entryPtr->layoutX; - Tk_Fill3DRectangle(tkwin, pixmap, entryPtr->selBorder, - selStartX - entryPtr->selBorderWidth, - baseY - fm.ascent - entryPtr->selBorderWidth, - (selEndX - selStartX) + 2*entryPtr->selBorderWidth, - (fm.ascent + fm.descent) + 2*entryPtr->selBorderWidth, - entryPtr->selBorderWidth, -#ifndef MAC_OSX_TK - TK_RELIEF_RAISED -#else - MAC_OSX_ENTRY_SELECT_RELIEF -#endif - ); - } - } - - /* - * Draw a special background for the insertion cursor, overriding even the - * selection background. As a special hack to keep the cursor visible when - * the insertion cursor color is the same as the color for selected text - * (e.g., on mono displays), write background in the cursor area (instead - * of nothing) when the cursor isn't on. Otherwise the selection would - * hide the cursor. - */ - - if ((entryPtr->state == STATE_NORMAL) && (entryPtr->flags & GOT_FOCUS)) { - Tk_CharBbox(entryPtr->textLayout, entryPtr->insertPos, &cursorX, NULL, - NULL, NULL); - cursorX += entryPtr->layoutX; - cursorX -= (entryPtr->insertWidth == 1) ? 1 : (entryPtr->insertWidth)/2; - Tk_SetCaretPos(entryPtr->tkwin, cursorX, baseY - fm.ascent, - fm.ascent + fm.descent); - if (entryPtr->insertPos >= entryPtr->leftIndex && cursorX < xBound) { - if (entryPtr->flags & CURSOR_ON) { - Tk_Fill3DRectangle(tkwin, pixmap, entryPtr->insertBorder, - cursorX, baseY - fm.ascent, entryPtr->insertWidth, - fm.ascent + fm.descent, entryPtr->insertBorderWidth, - TK_RELIEF_RAISED); - } else if (entryPtr->insertBorder == entryPtr->selBorder) { - Tk_Fill3DRectangle(tkwin, pixmap, border, cursorX, - baseY - fm.ascent, entryPtr->insertWidth, - fm.ascent + fm.descent, 0, TK_RELIEF_FLAT); - } - } - } - - /* - * Draw the text in two pieces: first the unselected portion, then the - * selected portion on top of it. - */ - - Tk_DrawTextLayout(entryPtr->display, pixmap, entryPtr->textGC, - entryPtr->textLayout, entryPtr->layoutX, entryPtr->layoutY, - entryPtr->leftIndex, entryPtr->numChars); - - if (showSelection && (entryPtr->state != STATE_DISABLED) - && (entryPtr->selTextGC != entryPtr->textGC) - && (entryPtr->selectFirst < entryPtr->selectLast)) { - int selFirst; - - if (entryPtr->selectFirst < entryPtr->leftIndex) { - selFirst = entryPtr->leftIndex; - } else { - selFirst = entryPtr->selectFirst; - } - Tk_DrawTextLayout(entryPtr->display, pixmap, entryPtr->selTextGC, - entryPtr->textLayout, entryPtr->layoutX, entryPtr->layoutY, - selFirst, entryPtr->selectLast); - } - - if (entryPtr->type == TK_SPINBOX) { - int startx, height, inset, pad, tHeight, xWidth; - Spinbox *sbPtr = (Spinbox *) entryPtr; - - /* - * Draw the spin button controls. - */ - - if (TkpDrawSpinboxButtons(sbPtr, pixmap) == 0) { - xWidth = entryPtr->xWidth; - pad = XPAD + 1; - inset = entryPtr->inset - XPAD; - startx = Tk_Width(tkwin) - (xWidth + inset); - height = (Tk_Height(tkwin) - 2*inset)/2; -#if 0 - Tk_Fill3DRectangle(tkwin, pixmap, sbPtr->buttonBorder, - startx, inset, xWidth, height, 1, sbPtr->buRelief); - Tk_Fill3DRectangle(tkwin, pixmap, sbPtr->buttonBorder, - startx, inset+height, xWidth, height, 1, sbPtr->bdRelief); -#else - Tk_Fill3DRectangle(tkwin, pixmap, sbPtr->buttonBorder, - startx, inset, xWidth, height, 1, - (sbPtr->selElement == SEL_BUTTONUP) ? - TK_RELIEF_SUNKEN : TK_RELIEF_RAISED); - Tk_Fill3DRectangle(tkwin, pixmap, sbPtr->buttonBorder, - startx, inset+height, xWidth, height, 1, - (sbPtr->selElement == SEL_BUTTONDOWN) ? - TK_RELIEF_SUNKEN : TK_RELIEF_RAISED); -#endif - - xWidth -= 2*pad; - - /* - * Only draw the triangles if we have enough display space - */ - - if ((xWidth > 1)) { - XPoint points[3]; - int starty, space, offset; - - space = height - 2*pad; - - /* - * Ensure width of triangle is odd to guarantee a sharp tip - */ - - if (!(xWidth % 2)) { - xWidth++; - } - tHeight = (xWidth + 1) / 2; - if (tHeight > space) { - tHeight = space; - } - space = (space - tHeight) / 2; - startx += pad; - starty = inset + height - pad - space; - offset = (sbPtr->selElement == SEL_BUTTONUP); - - /* - * The points are slightly different for the up and down - * arrows because (for *.x), we need to account for a bug in - * the way XFillPolygon draws triangles, and we want to shift - * the arrows differently when allowing for depressed - * behavior. - */ - - points[0].x = startx + offset; - points[0].y = starty + (offset ? 0 : -1); - points[1].x = startx + xWidth/2 + offset; - points[1].y = starty - tHeight + (offset ? 0 : -1); - points[2].x = startx + xWidth + offset; - points[2].y = points[0].y; - XFillPolygon(entryPtr->display, pixmap, entryPtr->textGC, - points, 3, Convex, CoordModeOrigin); - - starty = inset + height + pad + space; - offset = (sbPtr->selElement == SEL_BUTTONDOWN); - points[0].x = startx + 1 + offset; - points[0].y = starty + (offset ? 1 : 0); - points[1].x = startx + xWidth/2 + offset; - points[1].y = starty + tHeight + (offset ? 0 : -1); - points[2].x = startx - 1 + xWidth + offset; - points[2].y = points[0].y; - XFillPolygon(entryPtr->display, pixmap, entryPtr->textGC, - points, 3, Convex, CoordModeOrigin); - } - } - } - - /* - * Draw the border and focus highlight last, so they will overwrite any - * text that extends past the viewable part of the window. - */ - - if (!TkpDrawEntryBorderAndFocus(entryPtr, pixmap, - (entryPtr->type == TK_SPINBOX))) { - xBound = entryPtr->highlightWidth; - if (entryPtr->relief != TK_RELIEF_FLAT) { - Tk_Draw3DRectangle(tkwin, pixmap, border, xBound, xBound, - Tk_Width(tkwin) - 2 * xBound, - Tk_Height(tkwin) - 2 * xBound, - entryPtr->borderWidth, entryPtr->relief); - } - if (xBound > 0) { - GC fgGC, bgGC; - - bgGC = Tk_GCForColor(entryPtr->highlightBgColorPtr, pixmap); - if (entryPtr->flags & GOT_FOCUS) { - fgGC = Tk_GCForColor(entryPtr->highlightColorPtr, pixmap); - TkpDrawHighlightBorder(tkwin, fgGC, bgGC, xBound, pixmap); - } else { - TkpDrawHighlightBorder(tkwin, bgGC, bgGC, xBound, pixmap); - } - } - } - -#ifndef TK_NO_DOUBLE_BUFFERING - /* - * Everything's been redisplayed; now copy the pixmap onto the screen and - * free up the pixmap. - */ - - XCopyArea(entryPtr->display, pixmap, Tk_WindowId(tkwin), entryPtr->textGC, - 0, 0, (unsigned) Tk_Width(tkwin), (unsigned) Tk_Height(tkwin), - 0, 0); - Tk_FreePixmap(entryPtr->display, pixmap); -#endif /* TK_NO_DOUBLE_BUFFERING */ - entryPtr->flags &= ~BORDER_NEEDED; -} - -/* - *---------------------------------------------------------------------- - * - * EntryComputeGeometry -- - * - * This function is invoked to recompute information about where in its - * window an entry's string will be displayed. It also computes the - * requested size for the window. - * - * Results: - * None. - * - * Side effects: - * The leftX and tabOrigin fields are recomputed for entryPtr, and - * leftIndex may be adjusted. Tk_GeometryRequest is called to register - * the desired dimensions for the window. - * - *---------------------------------------------------------------------- - */ - -static void -EntryComputeGeometry( - Entry *entryPtr) /* Widget record for entry. */ -{ - int totalLength, overflow, maxOffScreen, rightX; - int height, width, i; - Tk_FontMetrics fm; - char *p; - - if (entryPtr->displayString != entryPtr->string) { - ckfree((char *)entryPtr->displayString); - entryPtr->displayString = entryPtr->string; - entryPtr->numDisplayBytes = entryPtr->numBytes; - } - - /* - * If we're displaying a special character instead of the value of the - * entry, recompute the displayString. - */ - - if (entryPtr->showChar != NULL) { - int ch; - char buf[6]; - int size; - - /* - * Normalize the special character so we can safely duplicate it in - * the display string. If we didn't do this, then two malformed - * characters might end up looking like one valid UTF character in the - * resulting string. - */ - - TkUtfToUniChar(entryPtr->showChar, &ch); - size = TkUniCharToUtf(ch, buf); - - entryPtr->numDisplayBytes = entryPtr->numChars * size; - p = ckalloc(entryPtr->numDisplayBytes + 1); - entryPtr->displayString = p; - - for (i = entryPtr->numChars; --i >= 0; ) { - memcpy(p, buf, size); - p += size; - } - *p = '\0'; - } - - Tk_FreeTextLayout(entryPtr->textLayout); - entryPtr->textLayout = Tk_ComputeTextLayout(entryPtr->tkfont, - entryPtr->displayString, entryPtr->numChars, 0, - entryPtr->justify, TK_IGNORE_NEWLINES, &totalLength, &height); - - entryPtr->layoutY = (Tk_Height(entryPtr->tkwin) - height) / 2; - - /* - * Recompute where the leftmost character on the display will be drawn - * (entryPtr->leftX) and adjust leftIndex if necessary so that we don't - * let characters hang off the edge of the window unless the entire window - * is full. - */ - - overflow = totalLength - - (Tk_Width(entryPtr->tkwin) - 2*entryPtr->inset - entryPtr->xWidth); - if (overflow <= 0) { - entryPtr->leftIndex = 0; - if (entryPtr->justify == TK_JUSTIFY_LEFT) { - entryPtr->leftX = entryPtr->inset; - } else if (entryPtr->justify == TK_JUSTIFY_RIGHT) { - entryPtr->leftX = Tk_Width(entryPtr->tkwin) - entryPtr->inset - - entryPtr->xWidth - totalLength; - } else { - entryPtr->leftX = (Tk_Width(entryPtr->tkwin) - - entryPtr->xWidth - totalLength)/2; - } - entryPtr->layoutX = entryPtr->leftX; - } else { - /* - * The whole string can't fit in the window. Compute the maximum - * number of characters that may be off-screen to the left without - * leaving empty space on the right of the window, then don't let - * leftIndex be any greater than that. - */ - - maxOffScreen = Tk_PointToChar(entryPtr->textLayout, overflow, 0); - Tk_CharBbox(entryPtr->textLayout, maxOffScreen, - &rightX, NULL, NULL, NULL); - if (rightX < overflow) { - maxOffScreen++; - } - if (entryPtr->leftIndex > maxOffScreen) { - entryPtr->leftIndex = maxOffScreen; - } - Tk_CharBbox(entryPtr->textLayout, entryPtr->leftIndex, &rightX, - NULL, NULL, NULL); - entryPtr->leftX = entryPtr->inset; - entryPtr->layoutX = entryPtr->leftX - rightX; - } - - Tk_GetFontMetrics(entryPtr->tkfont, &fm); - height = fm.linespace + 2*entryPtr->inset + 2*(YPAD-XPAD); - if (entryPtr->prefWidth > 0) { - width = entryPtr->prefWidth*entryPtr->avgWidth + 2*entryPtr->inset; - } else if (totalLength == 0) { - width = entryPtr->avgWidth + 2*entryPtr->inset; - } else { - width = totalLength + 2*entryPtr->inset; - } - - /* - * Add one extra length for the spin buttons - */ - width += entryPtr->xWidth; - - Tk_GeometryRequest(entryPtr->tkwin, width, height); -} - -/* - *---------------------------------------------------------------------- - * - * InsertChars -- - * - * Add new characters to an entry widget. - * - * Results: - * A standard Tcl result. If an error occurred then an error message is - * left in the interp's result. - * - * Side effects: - * New information gets added to entryPtr; it will be redisplayed soon, - * but not necessarily immediately. - * - *---------------------------------------------------------------------- - */ - -static int -InsertChars( - Entry *entryPtr, /* Entry that is to get the new elements. */ - int index, /* Add the new elements before this character - * index. */ - const char *value) /* New characters to add (NULL-terminated - * string). */ -{ - ptrdiff_t byteIndex; - size_t byteCount, newByteCount; - int oldChars, charsAdded; - const char *string; - char *newStr; - - string = entryPtr->string; - byteIndex = Tcl_UtfAtIndex(string, index) - string; - byteCount = strlen(value); - if (byteCount == 0) { - return TCL_OK; - } - - newByteCount = entryPtr->numBytes + byteCount + 1; - newStr = ckalloc(newByteCount); - memcpy(newStr, string, byteIndex); - strcpy(newStr + byteIndex, value); - strcpy(newStr + byteIndex + byteCount, string + byteIndex); - - if ((entryPtr->validate == VALIDATE_KEY || - entryPtr->validate == VALIDATE_ALL) && - EntryValidateChange(entryPtr, value, newStr, index, - VALIDATE_INSERT) != TCL_OK) { - ckfree(newStr); - return TCL_OK; - } - - ckfree((char *)string); - entryPtr->string = newStr; - - /* - * The following construction is used because inserting improperly formed - * UTF-8 sequences between other improperly formed UTF-8 sequences could - * result in actually forming valid UTF-8 sequences; the number of - * characters added may not be Tcl_NumUtfChars(string, -1), because of - * context. The actual number of characters added is how many characters - * are in the string now minus the number that used to be there. - */ - - oldChars = entryPtr->numChars; - entryPtr->numChars = Tcl_NumUtfChars(newStr, -1); - charsAdded = entryPtr->numChars - oldChars; - entryPtr->numBytes += byteCount; - - if (entryPtr->displayString == string) { - entryPtr->displayString = newStr; - entryPtr->numDisplayBytes = entryPtr->numBytes; - } - - /* - * Inserting characters invalidates all indexes into the string. Touch up - * the indexes so that they still refer to the same characters (at new - * positions). When updating the selection end-points, don't include the - * new text in the selection unless it was completely surrounded by the - * selection. - */ - - if (entryPtr->selectFirst >= index) { - entryPtr->selectFirst += charsAdded; - } - if (entryPtr->selectLast > index) { - entryPtr->selectLast += charsAdded; - } - if ((entryPtr->selectAnchor > index) || (entryPtr->selectFirst >= index)) { - entryPtr->selectAnchor += charsAdded; - } - if (entryPtr->leftIndex > index) { - entryPtr->leftIndex += charsAdded; - } - if (entryPtr->insertPos >= index) { - entryPtr->insertPos += charsAdded; - } - return EntryValueChanged(entryPtr, NULL); -} - -/* - *---------------------------------------------------------------------- - * - * DeleteChars -- - * - * Remove one or more characters from an entry widget. - * - * Results: - * A standard Tcl result. If an error occurred then an error message is - * left in the interp's result. - * - * Side effects: - * Memory gets freed, the entry gets modified and (eventually) - * redisplayed. - * - *---------------------------------------------------------------------- - */ - -static int -DeleteChars( - Entry *entryPtr, /* Entry widget to modify. */ - int index, /* Index of first character to delete. */ - int count) /* How many characters to delete. */ -{ - int byteIndex, byteCount, newByteCount; - const char *string; - char *newStr, *toDelete; - - if ((index + count) > entryPtr->numChars) { - count = entryPtr->numChars - index; - } - if (count <= 0) { - return TCL_OK; - } - - string = entryPtr->string; - byteIndex = Tcl_UtfAtIndex(string, index) - string; - byteCount = Tcl_UtfAtIndex(string + byteIndex, count) - (string+byteIndex); - - newByteCount = entryPtr->numBytes + 1 - byteCount; - newStr = ckalloc(newByteCount); - memcpy(newStr, string, (size_t) byteIndex); - strcpy(newStr + byteIndex, string + byteIndex + byteCount); - - toDelete = ckalloc(byteCount + 1); - memcpy(toDelete, string + byteIndex, (size_t) byteCount); - toDelete[byteCount] = '\0'; - - if ((entryPtr->validate == VALIDATE_KEY || - entryPtr->validate == VALIDATE_ALL) && - EntryValidateChange(entryPtr, toDelete, newStr, index, - VALIDATE_DELETE) != TCL_OK) { - ckfree(newStr); - ckfree(toDelete); - return TCL_OK; - } - - ckfree(toDelete); - ckfree((char *)entryPtr->string); - entryPtr->string = newStr; - entryPtr->numChars -= count; - entryPtr->numBytes -= byteCount; - - if (entryPtr->displayString == string) { - entryPtr->displayString = newStr; - entryPtr->numDisplayBytes = entryPtr->numBytes; - } - - /* - * Deleting characters results in the remaining characters being - * renumbered. Update the various indexes into the string to reflect this - * change. - */ - - if (entryPtr->selectFirst >= index) { - if (entryPtr->selectFirst >= (index + count)) { - entryPtr->selectFirst -= count; - } else { - entryPtr->selectFirst = index; - } - } - if (entryPtr->selectLast >= index) { - if (entryPtr->selectLast >= (index + count)) { - entryPtr->selectLast -= count; - } else { - entryPtr->selectLast = index; - } - } - if (entryPtr->selectLast <= entryPtr->selectFirst) { - entryPtr->selectFirst = -1; - entryPtr->selectLast = -1; - } - if (entryPtr->selectAnchor >= index) { - if (entryPtr->selectAnchor >= (index+count)) { - entryPtr->selectAnchor -= count; - } else { - entryPtr->selectAnchor = index; - } - } - if (entryPtr->leftIndex > index) { - if (entryPtr->leftIndex >= (index + count)) { - entryPtr->leftIndex -= count; - } else { - entryPtr->leftIndex = index; - } - } - if (entryPtr->insertPos >= index) { - if (entryPtr->insertPos >= (index + count)) { - entryPtr->insertPos -= count; - } else { - entryPtr->insertPos = index; - } - } - return EntryValueChanged(entryPtr, NULL); -} - -/* - *---------------------------------------------------------------------- - * - * EntryValueChanged -- - * - * This function is invoked when characters are inserted into an entry or - * deleted from it. It updates the entry's associated variable, if there - * is one, and does other bookkeeping such as arranging for redisplay. - * - * Results: - * A standard Tcl result. If an error occurred then an error message is - * left in the interp's result. - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ - -static int -EntryValueChanged( - Entry *entryPtr, /* Entry whose value just changed. */ - const char *newValue) /* If this value is not NULL, we first force - * the value of the entry to this. */ -{ - if (newValue != NULL) { - EntrySetValue(entryPtr, newValue); - } - - if (entryPtr->textVarName == NULL) { - newValue = NULL; - } else { - newValue = Tcl_SetVar2(entryPtr->interp, entryPtr->textVarName, - NULL, entryPtr->string, TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG); - } - - if ((newValue != NULL) && (strcmp(newValue, entryPtr->string) != 0)) { - /* - * The value of the variable is different than what we asked for. - * This means that a trace on the variable modified it. In this case - * our trace function wasn't invoked since the modification came while - * a trace was already active on the variable. So, update our value to - * reflect the variable's latest value. - */ - - EntrySetValue(entryPtr, newValue); - } else { - /* - * Arrange for redisplay. - */ - - entryPtr->flags |= UPDATE_SCROLLBAR; - EntryComputeGeometry(entryPtr); - EventuallyRedraw(entryPtr); - } - - /* - * An error may have happened when setting the textvariable in case there - * is a trace on that variable and the trace proc triggered an error. - * Another possibility is that the textvariable is in a namespace that - * does not (yet) exist. - * Signal this error. - */ - - if ((entryPtr->textVarName != NULL) && (newValue == NULL)) { - return TCL_ERROR; - } - return TCL_OK; -} - -/* - *---------------------------------------------------------------------- - * - * EntrySetValue -- - * - * Replace the contents of a text entry with a given value. This function - * is invoked when updating the entry from the entry's associated - * variable. - * - * Results: - * None. - * - * Side effects: - * The string displayed in the entry will change. The selection, - * insertion point, and view may have to be adjusted to keep them within - * the bounds of the new string. Note: this function does *not* update - * the entry's associated variable, since that could result in an - * infinite loop. - * - *---------------------------------------------------------------------- - */ - -static void -EntrySetValue( - Entry *entryPtr, /* Entry whose value is to be changed. */ - const char *value) /* New text to display in entry. */ -{ - const char *oldSource; - int valueLen, malloced = 0; - - if (strcmp(value, entryPtr->string) == 0) { - return; - } - valueLen = strlen(value); - - if (entryPtr->flags & VALIDATE_VAR) { - entryPtr->flags |= VALIDATE_ABORT; - } else { - /* - * If we validate, we create a copy of the value, as it may point to - * volatile memory, like the value of the -textvar which may get freed - * during validation - */ - - char *tmp = ckalloc(valueLen + 1); - - strcpy(tmp, value); - value = tmp; - malloced = 1; - - entryPtr->flags |= VALIDATE_VAR; - (void) EntryValidateChange(entryPtr, NULL, value, -1, - VALIDATE_FORCED); - entryPtr->flags &= ~VALIDATE_VAR; - - /* - * If VALIDATE_ABORT has been set, then this operation should be - * aborted because the validatecommand did something else instead - */ - - if (entryPtr->flags & VALIDATE_ABORT) { - entryPtr->flags &= ~VALIDATE_ABORT; - ckfree((char *)value); - return; - } - } - - oldSource = entryPtr->string; - ckfree((char *)entryPtr->string); - - if (malloced) { - entryPtr->string = value; - } else { - char *tmp = ckalloc(valueLen + 1); - - strcpy(tmp, value); - entryPtr->string = tmp; - } - entryPtr->numBytes = valueLen; - entryPtr->numChars = Tcl_NumUtfChars(value, valueLen); - - if (entryPtr->displayString == oldSource) { - entryPtr->displayString = entryPtr->string; - entryPtr->numDisplayBytes = entryPtr->numBytes; - } - - if (entryPtr->selectFirst >= 0) { - if (entryPtr->selectFirst >= entryPtr->numChars) { - entryPtr->selectFirst = -1; - entryPtr->selectLast = -1; - } else if (entryPtr->selectLast > entryPtr->numChars) { - entryPtr->selectLast = entryPtr->numChars; - } - } - if (entryPtr->leftIndex >= entryPtr->numChars) { - if (entryPtr->numChars > 0) { - entryPtr->leftIndex = entryPtr->numChars - 1; - } else { - entryPtr->leftIndex = 0; - } - } - if (entryPtr->insertPos > entryPtr->numChars) { - entryPtr->insertPos = entryPtr->numChars; - } - - entryPtr->flags |= UPDATE_SCROLLBAR; - EntryComputeGeometry(entryPtr); - EventuallyRedraw(entryPtr); -} - -/* - *-------------------------------------------------------------- - * - * EntryEventProc -- - * - * This function is invoked by the Tk dispatcher for various events on - * entries. - * - * Results: - * None. - * - * Side effects: - * When the window gets deleted, internal structures get cleaned up. - * When it gets exposed, it is redisplayed. - * - *-------------------------------------------------------------- - */ - -static void -EntryEventProc( - ClientData clientData, /* Information about window. */ - XEvent *eventPtr) /* Information about event. */ -{ - Entry *entryPtr = clientData; - - if ((entryPtr->type == TK_SPINBOX) && (eventPtr->type == MotionNotify)) { - Spinbox *sbPtr = clientData; - int elem; - - elem = GetSpinboxElement(sbPtr, eventPtr->xmotion.x, - eventPtr->xmotion.y); - if (elem != sbPtr->curElement) { - Tk_Cursor cursor; - - sbPtr->curElement = elem; - if (elem == SEL_ENTRY) { - cursor = entryPtr->cursor; - } else if ((elem == SEL_BUTTONDOWN) || (elem == SEL_BUTTONUP)) { - cursor = sbPtr->bCursor; - } else { - cursor = None; - } - if (cursor != None) { - Tk_DefineCursor(entryPtr->tkwin, cursor); - } else { - Tk_UndefineCursor(entryPtr->tkwin); - } - } - return; - } - - switch (eventPtr->type) { - case Expose: - EventuallyRedraw(entryPtr); - entryPtr->flags |= BORDER_NEEDED; - break; - case DestroyNotify: - if (!(entryPtr->flags & ENTRY_DELETED)) { - entryPtr->flags |= (ENTRY_DELETED | VALIDATE_ABORT); - Tcl_DeleteCommandFromToken(entryPtr->interp, entryPtr->widgetCmd); - if (entryPtr->flags & REDRAW_PENDING) { - Tcl_CancelIdleCall(DisplayEntry, clientData); - } - Tcl_EventuallyFree(clientData, (Tcl_FreeProc *) DestroyEntry); - } - break; - case ConfigureNotify: - Tcl_Preserve(entryPtr); - entryPtr->flags |= UPDATE_SCROLLBAR; - EntryComputeGeometry(entryPtr); - EventuallyRedraw(entryPtr); - Tcl_Release(entryPtr); - break; - case FocusIn: - case FocusOut: - if (eventPtr->xfocus.detail != NotifyInferior) { - EntryFocusProc(entryPtr, (eventPtr->type == FocusIn)); - } - break; - } -} - -/* - *---------------------------------------------------------------------- - * - * EntryCmdDeletedProc -- - * - * This function is invoked when a widget command is deleted. If the - * widget isn't already in the process of being destroyed, this command - * destroys it. - * - * Results: - * None. - * - * Side effects: - * The widget is destroyed. - * - *---------------------------------------------------------------------- - */ - -static void -EntryCmdDeletedProc( - ClientData clientData) /* Pointer to widget record for widget. */ -{ - Entry *entryPtr = clientData; - - /* - * This function could be invoked either because the window was destroyed - * and the command was then deleted (in which case tkwin is NULL) or - * because the command was deleted, and then this function destroys the - * widget. - */ - - if (!(entryPtr->flags & ENTRY_DELETED)) { - Tk_DestroyWindow(entryPtr->tkwin); - } -} - -/* - *--------------------------------------------------------------------------- - * - * GetEntryIndex -- - * - * Parse an index into an entry and return either its value or an error. - * - * Results: - * A standard Tcl result. If all went well, then *indexPtr is filled in - * with the character index (into entryPtr) corresponding to string. The - * index value is guaranteed to lie between 0 and the number of - * characters in the string, inclusive. If an error occurs then an error - * message is left in the interp's result. - * - * Side effects: - * None. - * - *--------------------------------------------------------------------------- - */ - -static int -GetEntryIndex( - Tcl_Interp *interp, /* For error messages. */ - Entry *entryPtr, /* Entry for which the index is being - * specified. */ - const char *string, /* Specifies character in entryPtr. */ - int *indexPtr) /* Where to store converted character index */ -{ - size_t length; - - length = strlen(string); - - switch (string[0]) { - case 'a': - if (strncmp(string, "anchor", length) != 0) { - goto badIndex; - } - *indexPtr = entryPtr->selectAnchor; - break; - case 'e': - if (strncmp(string, "end", length) != 0) { - goto badIndex; - } - *indexPtr = entryPtr->numChars; - break; - case 'i': - if (strncmp(string, "insert", length) != 0) { - goto badIndex; - } - *indexPtr = entryPtr->insertPos; - break; - case 's': - if (entryPtr->selectFirst < 0) { - Tcl_ResetResult(interp); - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "selection isn't in widget %s", - Tk_PathName(entryPtr->tkwin))); - Tcl_SetErrorCode(interp, "TK", - (entryPtr->type == TK_ENTRY) ? "ENTRY" : "SPINBOX", - "NO_SELECTION", NULL); - return TCL_ERROR; - } - if (length < 5) { - goto badIndex; - } - if (strncmp(string, "sel.first", length) == 0) { - *indexPtr = entryPtr->selectFirst; - } else if (strncmp(string, "sel.last", length) == 0) { - *indexPtr = entryPtr->selectLast; - } else { - goto badIndex; - } - break; - case '@': { - int x, roundUp, maxWidth; - - if (Tcl_GetInt(NULL, string + 1, &x) != TCL_OK) { - goto badIndex; - } - if (x < entryPtr->inset) { - x = entryPtr->inset; - } - roundUp = 0; - maxWidth = Tk_Width(entryPtr->tkwin) - entryPtr->inset - - entryPtr->xWidth - 1; - if (x > maxWidth) { - x = maxWidth; - roundUp = 1; - } - *indexPtr = Tk_PointToChar(entryPtr->textLayout, - x - entryPtr->layoutX, 0); - - /* - * Special trick: if the x-position was off-screen to the right, round - * the index up to refer to the character just after the last visible - * one on the screen. This is needed to enable the last character to - * be selected, for example. - */ - - if (roundUp && (*indexPtr < entryPtr->numChars)) { - *indexPtr += 1; - } - break; - } - default: - if (Tcl_GetInt(NULL, string, indexPtr) != TCL_OK) { - goto badIndex; - } - if (*indexPtr < 0){ - *indexPtr = 0; - } else if (*indexPtr > entryPtr->numChars) { - *indexPtr = entryPtr->numChars; - } - } - return TCL_OK; - - badIndex: - Tcl_SetObjResult(interp, Tcl_ObjPrintf("bad %s index \"%s\"", - (entryPtr->type == TK_ENTRY) ? "entry" : "spinbox", string)); - Tcl_SetErrorCode(interp, "TK", - (entryPtr->type == TK_ENTRY) ? "ENTRY" : "SPINBOX", - "BAD_INDEX", NULL); - return TCL_ERROR; -} - -/* - *---------------------------------------------------------------------- - * - * EntryScanTo -- - * - * Given a y-coordinate (presumably of the curent mouse location) drag - * the view in the window to implement the scan operation. - * - * Results: - * None. - * - * Side effects: - * The view in the window may change. - * - *---------------------------------------------------------------------- - */ - -static void -EntryScanTo( - Entry *entryPtr, /* Information about widget. */ - int x) /* X-coordinate to use for scan operation. */ -{ - int newLeftIndex; - - /* - * Compute new leftIndex for entry by amplifying the difference between - * the current position and the place where the scan started (the "mark" - * position). If we run off the left or right side of the entry, then - * reset the mark point so that the current position continues to - * correspond to the edge of the window. This means that the picture will - * start dragging as soon as the mouse reverses direction (without this - * reset, might have to slide mouse a long ways back before the picture - * starts moving again). - */ - - newLeftIndex = entryPtr->scanMarkIndex - - (10 * (x - entryPtr->scanMarkX)) / entryPtr->avgWidth; - if (newLeftIndex >= entryPtr->numChars) { - newLeftIndex = entryPtr->scanMarkIndex = entryPtr->numChars - 1; - entryPtr->scanMarkX = x; - } - if (newLeftIndex < 0) { - newLeftIndex = entryPtr->scanMarkIndex = 0; - entryPtr->scanMarkX = x; - } - - if (newLeftIndex != entryPtr->leftIndex) { - entryPtr->leftIndex = newLeftIndex; - entryPtr->flags |= UPDATE_SCROLLBAR; - EntryComputeGeometry(entryPtr); - if (newLeftIndex != entryPtr->leftIndex) { - entryPtr->scanMarkIndex = entryPtr->leftIndex; - entryPtr->scanMarkX = x; - } - EventuallyRedraw(entryPtr); - } -} - -/* - *---------------------------------------------------------------------- - * - * EntrySelectTo -- - * - * Modify the selection by moving its un-anchored end. This could make - * the selection either larger or smaller. - * - * Results: - * None. - * - * Side effects: - * The selection changes. - * - *---------------------------------------------------------------------- - */ - -static void -EntrySelectTo( - Entry *entryPtr, /* Information about widget. */ - int index) /* Character index of element that is to - * become the "other" end of the selection. */ -{ - int newFirst, newLast; - - /* - * Grab the selection if we don't own it already. - */ - - if (!(entryPtr->flags & GOT_SELECTION) && (entryPtr->exportSelection)) { - Tk_OwnSelection(entryPtr->tkwin, XA_PRIMARY, EntryLostSelection, - entryPtr); - entryPtr->flags |= GOT_SELECTION; - } - - /* - * Pick new starting and ending points for the selection. - */ - - if (entryPtr->selectAnchor > entryPtr->numChars) { - entryPtr->selectAnchor = entryPtr->numChars; - } - if (entryPtr->selectAnchor <= index) { - newFirst = entryPtr->selectAnchor; - newLast = index; - } else { - newFirst = index; - newLast = entryPtr->selectAnchor; - if (newLast < 0) { - newFirst = newLast = -1; - } - } - if ((entryPtr->selectFirst == newFirst) - && (entryPtr->selectLast == newLast)) { - return; - } - entryPtr->selectFirst = newFirst; - entryPtr->selectLast = newLast; - EventuallyRedraw(entryPtr); -} - -/* - *---------------------------------------------------------------------- - * - * EntryFetchSelection -- - * - * This function is called back by Tk when the selection is requested by - * someone. It returns part or all of the selection in a buffer provided - * by the caller. - * - * Results: - * The return value is the number of non-NULL bytes stored at buffer. - * Buffer is filled (or partially filled) with a NULL-terminated string - * containing part or all of the selection, as given by offset and - * maxBytes. - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ - -static int -EntryFetchSelection( - ClientData clientData, /* Information about entry widget. */ - int offset, /* Byte offset within selection of first - * character to be returned. */ - char *buffer, /* Location in which to place selection. */ - int maxBytes) /* Maximum number of bytes to place at buffer, - * not including terminating NUL character. */ -{ - Entry *entryPtr = clientData; - int byteCount; - const char *string; - const char *selStart, *selEnd; - - if ((entryPtr->selectFirst < 0) || !(entryPtr->exportSelection)) { - return -1; - } - string = entryPtr->displayString; - selStart = Tcl_UtfAtIndex(string, entryPtr->selectFirst); - selEnd = Tcl_UtfAtIndex(selStart, - entryPtr->selectLast - entryPtr->selectFirst); - byteCount = selEnd - selStart - offset; - if (byteCount > maxBytes) { - byteCount = maxBytes; - } - if (byteCount <= 0) { - return 0; - } - memcpy(buffer, selStart + offset, (size_t) byteCount); - buffer[byteCount] = '\0'; - return byteCount; -} - -/* - *---------------------------------------------------------------------- - * - * EntryLostSelection -- - * - * This function is called back by Tk when the selection is grabbed away - * from an entry widget. - * - * Results: - * None. - * - * Side effects: - * The existing selection is unhighlighted, and the window is marked as - * not containing a selection. - * - *---------------------------------------------------------------------- - */ - -static void -EntryLostSelection( - ClientData clientData) /* Information about entry widget. */ -{ - Entry *entryPtr = clientData; - - entryPtr->flags &= ~GOT_SELECTION; - - /* - * On Windows and Mac systems, we want to remember the selection for the - * next time the focus enters the window. On Unix, we need to clear the - * selection since it is always visible. - * This is controlled by ::tk::AlwaysShowSelection. - */ - - if (TkpAlwaysShowSelection(entryPtr->tkwin) - && (entryPtr->selectFirst >= 0) && entryPtr->exportSelection) { - entryPtr->selectFirst = -1; - entryPtr->selectLast = -1; - EventuallyRedraw(entryPtr); - } -} - -/* - *---------------------------------------------------------------------- - * - * EventuallyRedraw -- - * - * Ensure that an entry is eventually redrawn on the display. - * - * Results: - * None. - * - * Side effects: - * Information gets redisplayed. Right now we don't do selective - * redisplays: the whole window will be redrawn. This doesn't seem to - * hurt performance noticeably, but if it does then this could be - * changed. - * - *---------------------------------------------------------------------- - */ - -static void -EventuallyRedraw( - Entry *entryPtr) /* Information about widget. */ -{ - if ((entryPtr->flags & ENTRY_DELETED) || !Tk_IsMapped(entryPtr->tkwin)) { - return; - } - - /* - * Right now we don't do selective redisplays: the whole window will be - * redrawn. This doesn't seem to hurt performance noticeably, but if it - * does then this could be changed. - */ - - if (!(entryPtr->flags & REDRAW_PENDING)) { - entryPtr->flags |= REDRAW_PENDING; - Tcl_DoWhenIdle(DisplayEntry, entryPtr); - } -} - -/* - *---------------------------------------------------------------------- - * - * EntryVisibleRange -- - * - * Return information about the range of the entry that is currently - * visible. - * - * Results: - * *firstPtr and *lastPtr are modified to hold fractions between 0 and 1 - * identifying the range of characters visible in the entry. - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ - -static void -EntryVisibleRange( - Entry *entryPtr, /* Information about widget. */ - double *firstPtr, /* Return position of first visible character - * in widget. */ - double *lastPtr) /* Return position of char just after last - * visible one. */ -{ - int charsInWindow; - - if (entryPtr->numChars == 0) { - *firstPtr = 0.0; - *lastPtr = 1.0; - } else { - charsInWindow = Tk_PointToChar(entryPtr->textLayout, - Tk_Width(entryPtr->tkwin) - entryPtr->inset - - entryPtr->xWidth - entryPtr->layoutX - 1, 0); - if (charsInWindow < entryPtr->numChars) { - charsInWindow++; - } - charsInWindow -= entryPtr->leftIndex; - if (charsInWindow == 0) { - charsInWindow = 1; - } - - *firstPtr = (double) entryPtr->leftIndex / entryPtr->numChars; - *lastPtr = (double) (entryPtr->leftIndex + charsInWindow) - / entryPtr->numChars; - } -} - -/* - *---------------------------------------------------------------------- - * - * EntryUpdateScrollbar -- - * - * This function is invoked whenever information has changed in an entry - * in a way that would invalidate a scrollbar display. If there is an - * associated scrollbar, then this function updates it by invoking a Tcl - * command. - * - * Results: - * None. - * - * Side effects: - * A Tcl command is invoked, and an additional command may be - * invoked to process errors in the command. - * - *---------------------------------------------------------------------- - */ - -static void -EntryUpdateScrollbar( - Entry *entryPtr) /* Information about widget. */ -{ - char firstStr[TCL_DOUBLE_SPACE], lastStr[TCL_DOUBLE_SPACE]; - int code; - double first, last; - Tcl_Interp *interp; - Tcl_DString buf; - - if (entryPtr->scrollCmd == NULL) { - return; - } - - interp = entryPtr->interp; - Tcl_Preserve(interp); - EntryVisibleRange(entryPtr, &first, &last); - Tcl_PrintDouble(NULL, first, firstStr); - Tcl_PrintDouble(NULL, last, lastStr); - Tcl_DStringInit(&buf); - Tcl_DStringAppend(&buf, entryPtr->scrollCmd, -1); - Tcl_DStringAppend(&buf, " ", -1); - Tcl_DStringAppend(&buf, firstStr, -1); - Tcl_DStringAppend(&buf, " ", -1); - Tcl_DStringAppend(&buf, lastStr, -1); - code = Tcl_EvalEx(interp, Tcl_DStringValue(&buf), -1, 0); - Tcl_DStringFree(&buf); - if (code != TCL_OK) { - Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( - "\n (horizontal scrolling command executed by %s)", - Tk_PathName(entryPtr->tkwin))); - Tcl_BackgroundException(interp, code); - } - Tcl_ResetResult(interp); - Tcl_Release(interp); -} - -/* - *---------------------------------------------------------------------- - * - * EntryBlinkProc -- - * - * This function is called as a timer handler to blink the insertion - * cursor off and on. - * - * Results: - * None. - * - * Side effects: - * The cursor gets turned on or off, redisplay gets invoked, and this - * function reschedules itself. - * - *---------------------------------------------------------------------- - */ - -static void -EntryBlinkProc( - ClientData clientData) /* Pointer to record describing entry. */ -{ - Entry *entryPtr = clientData; - - if ((entryPtr->state == STATE_DISABLED) || - (entryPtr->state == STATE_READONLY) || - !(entryPtr->flags & GOT_FOCUS) || (entryPtr->insertOffTime == 0)) { - return; - } - if (entryPtr->flags & CURSOR_ON) { - entryPtr->flags &= ~CURSOR_ON; - entryPtr->insertBlinkHandler = Tcl_CreateTimerHandler( - entryPtr->insertOffTime, EntryBlinkProc, entryPtr); - } else { - entryPtr->flags |= CURSOR_ON; - entryPtr->insertBlinkHandler = Tcl_CreateTimerHandler( - entryPtr->insertOnTime, EntryBlinkProc, entryPtr); - } - EventuallyRedraw(entryPtr); -} - -/* - *---------------------------------------------------------------------- - * - * EntryFocusProc -- - * - * This function is called whenever the entry gets or loses the input - * focus. It's also called whenever the window is reconfigured while it - * has the focus. - * - * Results: - * None. - * - * Side effects: - * The cursor gets turned on or off. - * - *---------------------------------------------------------------------- - */ - -static void -EntryFocusProc( - Entry *entryPtr, /* Entry that got or lost focus. */ - int gotFocus) /* 1 means window is getting focus, 0 means - * it's losing it. */ -{ - Tcl_DeleteTimerHandler(entryPtr->insertBlinkHandler); - if (gotFocus) { - entryPtr->flags |= GOT_FOCUS | CURSOR_ON; - if (entryPtr->insertOffTime != 0) { - entryPtr->insertBlinkHandler = Tcl_CreateTimerHandler( - entryPtr->insertOnTime, EntryBlinkProc, entryPtr); - } - if (entryPtr->validate == VALIDATE_ALL || - entryPtr->validate == VALIDATE_FOCUS || - entryPtr->validate == VALIDATE_FOCUSIN) { - EntryValidateChange(entryPtr, NULL, entryPtr->string, -1, - VALIDATE_FOCUSIN); - } - } else { - entryPtr->flags &= ~(GOT_FOCUS | CURSOR_ON); - entryPtr->insertBlinkHandler = NULL; - if (entryPtr->validate == VALIDATE_ALL || - entryPtr->validate == VALIDATE_FOCUS || - entryPtr->validate == VALIDATE_FOCUSOUT) { - EntryValidateChange(entryPtr, NULL, entryPtr->string, -1, - VALIDATE_FOCUSOUT); - } - } - EventuallyRedraw(entryPtr); -} - -/* - *-------------------------------------------------------------- - * - * EntryTextVarProc -- - * - * This function is invoked when someone changes the variable whose - * contents are to be displayed in an entry. - * - * Results: - * NULL is always returned. - * - * Side effects: - * The text displayed in the entry will change to match the variable. - * - *-------------------------------------------------------------- - */ - - /* ARGSUSED */ -static char * -EntryTextVarProc( - ClientData clientData, /* Information about button. */ - Tcl_Interp *interp, /* Interpreter containing variable. */ - const char *name1, /* Not used. */ - const char *name2, /* Not used. */ - int flags) /* Information about what happened. */ -{ - Entry *entryPtr = clientData; - const char *value; - - if (entryPtr->flags & ENTRY_DELETED) { - /* - * Just abort early if we entered here while being deleted. - */ - return NULL; - } - - /* - * If the variable is unset, then immediately recreate it unless the whole - * interpreter is going away. - */ - - if (flags & TCL_TRACE_UNSETS) { - if ((flags & TCL_TRACE_DESTROYED) && !(flags & TCL_INTERP_DESTROYED)) { - Tcl_SetVar2(interp, entryPtr->textVarName, NULL, - entryPtr->string, TCL_GLOBAL_ONLY); - Tcl_TraceVar2(interp, entryPtr->textVarName, NULL, - TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS, - EntryTextVarProc, clientData); - entryPtr->flags |= ENTRY_VAR_TRACED; - } - return NULL; - } - - /* - * Update the entry's text with the value of the variable, unless the - * entry already has that value (this happens when the variable changes - * value because we changed it because someone typed in the entry). - */ - - value = Tcl_GetVar2(interp, entryPtr->textVarName, NULL, TCL_GLOBAL_ONLY); - if (value == NULL) { - value = ""; - } - EntrySetValue(entryPtr, value); - return NULL; -} - -/* - *-------------------------------------------------------------- - * - * EntryValidate -- - * - * This function is invoked when any character is added or removed from - * the entry widget, or a focus has trigerred validation. - * - * Results: - - * TCL_OK if the validatecommand passes the new string. TCL_BREAK if the - * vcmd executed OK, but rejects the string. TCL_ERROR if an error - * occurred while executing the vcmd or a valid Tcl_Bool is not returned. - * - * Side effects: - * An error condition may arise - * - *-------------------------------------------------------------- - */ - -static int -EntryValidate( - register Entry *entryPtr, /* Entry that needs validation. */ - register char *cmd) /* Validation command (NULL-terminated - * string). */ -{ - register Tcl_Interp *interp = entryPtr->interp; - int code, bool; - - code = Tcl_EvalEx(interp, cmd, -1, TCL_EVAL_GLOBAL | TCL_EVAL_DIRECT); - - /* - * We accept TCL_OK and TCL_RETURN as valid return codes from the command - * callback. - */ - - if (code != TCL_OK && code != TCL_RETURN) { - Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( - "\n (in validation command executed by %s)", - Tk_PathName(entryPtr->tkwin))); - Tcl_BackgroundException(interp, code); - return TCL_ERROR; - } - - /* - * The command callback should return an acceptable Tcl boolean. - */ - - if (Tcl_GetBooleanFromObj(interp, Tcl_GetObjResult(interp), - &bool) != TCL_OK) { - Tcl_AddErrorInfo(interp, - "\n (invalid boolean result from validation command)"); - Tcl_BackgroundException(interp, TCL_ERROR); - Tcl_ResetResult(interp); - return TCL_ERROR; - } - - Tcl_ResetResult(interp); - return (bool ? TCL_OK : TCL_BREAK); -} - -/* - *-------------------------------------------------------------- - * - * EntryValidateChange -- - * - * This function is invoked when any character is added or removed from - * the entry widget, or a focus has trigerred validation. - * - * Results: - * TCL_OK if the validatecommand accepts the new string, TCL_ERROR if any - * problems occured with validatecommand. - * - * Side effects: - * The insertion/deletion may be aborted, and the validatecommand might - * turn itself off (if an error or loop condition arises). - * - *-------------------------------------------------------------- - */ - -static int -EntryValidateChange( - register Entry *entryPtr, /* Entry that needs validation. */ - const char *change, /* Characters to be added/deleted - * (NUL-terminated string). */ - const char *newValue, /* Potential new value of entry string */ - int index, /* index of insert/delete, -1 otherwise */ - int type) /* forced, delete, insert, focusin or - * focusout */ -{ - int code, varValidate = (entryPtr->flags & VALIDATE_VAR); - char *p; - Tcl_DString script; - - if (entryPtr->validateCmd == NULL || - entryPtr->validate == VALIDATE_NONE) { - return (varValidate ? TCL_ERROR : TCL_OK); - } - - /* - * If we're already validating, then we're hitting a loop condition Return - * and set validate to 0 to disallow further validations and prevent - * current validation from finishing - */ - - if (entryPtr->flags & VALIDATING) { - entryPtr->validate = VALIDATE_NONE; - return (varValidate ? TCL_ERROR : TCL_OK); - } - - entryPtr->flags |= VALIDATING; - - /* - * Now form command string and run through the -validatecommand - */ - - Tcl_DStringInit(&script); - ExpandPercents(entryPtr, entryPtr->validateCmd, - change, newValue, index, type, &script); - Tcl_DStringAppend(&script, "", 1); - - p = Tcl_DStringValue(&script); - code = EntryValidate(entryPtr, p); - Tcl_DStringFree(&script); - - /* - * If e->validate has become VALIDATE_NONE during the validation, or we - * now have VALIDATE_VAR set (from EntrySetValue) and didn't before, it - * means that a loop condition almost occured. Do not allow this - * validation result to finish. - */ - - if (entryPtr->validate == VALIDATE_NONE - || (!varValidate && (entryPtr->flags & VALIDATE_VAR))) { - code = TCL_ERROR; - } - - /* - * It's possible that the user deleted the entry during validation. In - * that case, abort future validation and return an error. - */ - - if (entryPtr->flags & ENTRY_DELETED) { - return TCL_ERROR; - } - - /* - * If validate will return ERROR, then disallow further validations - * Otherwise, if it didn't accept the new string (returned TCL_BREAK) then - * eval the invalidCmd (if it's set) - */ - - if (code == TCL_ERROR) { - entryPtr->validate = VALIDATE_NONE; - } else if (code == TCL_BREAK) { - /* - * If we were doing forced validation (like via a variable trace) and - * the command returned 0, the we turn off validation because we - * assume that textvariables have precedence in managing the value. - * We also don't call the invcmd, as it may want to do entry - * manipulation which the setting of the var will later wipe anyway. - */ - - if (varValidate) { - entryPtr->validate = VALIDATE_NONE; - } else if (entryPtr->invalidCmd != NULL) { - int result; - - Tcl_DStringInit(&script); - ExpandPercents(entryPtr, entryPtr->invalidCmd, - change, newValue, index, type, &script); - Tcl_DStringAppend(&script, "", 1); - p = Tcl_DStringValue(&script); - result = Tcl_EvalEx(entryPtr->interp, p, -1, - TCL_EVAL_GLOBAL | TCL_EVAL_DIRECT); - if (result != TCL_OK) { - Tcl_AddErrorInfo(entryPtr->interp, - "\n (in invalidcommand executed by entry)"); - Tcl_BackgroundException(entryPtr->interp, result); - code = TCL_ERROR; - entryPtr->validate = VALIDATE_NONE; - } - Tcl_DStringFree(&script); - - /* - * It's possible that the user deleted the entry during - * validation. In that case, abort future validation and return an - * error. - */ - - if (entryPtr->flags & ENTRY_DELETED) { - return TCL_ERROR; - } - } - } - - entryPtr->flags &= ~VALIDATING; - - return code; -} - -/* - *-------------------------------------------------------------- - * - * ExpandPercents -- - * - * Given a command and an event, produce a new command by replacing % - * constructs in the original command with information from the X event. - * - * Results: - * The new expanded command is appended to the dynamic string given by - * dsPtr. - * - * Side effects: - * None. - * - *-------------------------------------------------------------- - */ - -static void -ExpandPercents( - register Entry *entryPtr, /* Entry that needs validation. */ - register const char *before, - /* Command containing percent expressions to - * be replaced. */ - const char *change, /* Characters to added/deleted (NUL-terminated - * string). */ - const char *newValue, /* Potential new value of entry string */ - int index, /* index of insert/delete */ - int type, /* INSERT or DELETE */ - Tcl_DString *dsPtr) /* Dynamic string in which to append new - * command. */ -{ - int spaceNeeded, cvtFlags; /* Used to substitute string as proper Tcl - * list element. */ - int number, length; - register const char *string; - int ch; - char numStorage[2*TCL_INTEGER_SPACE]; - - while (1) { - if (*before == '\0') { - break; - } - /* - * Find everything up to the next % character and append it to the - * result string. - */ - - string = before; - - /* - * No need to convert '%', as it is in ascii range. - */ - - string = Tcl_UtfFindFirst(before, '%'); - if (string == NULL) { - Tcl_DStringAppend(dsPtr, before, -1); - break; - } else if (string != before) { - Tcl_DStringAppend(dsPtr, before, string-before); - before = string; - } - - /* - * There's a percent sequence here. Process it. - */ - - before++; /* skip over % */ - if (*before != '\0') { - before += TkUtfToUniChar(before, &ch); - } else { - ch = '%'; - } - if (type == VALIDATE_BUTTON) { - /* - * -command %-substitution - */ - - switch (ch) { - case 's': /* Current string value of spinbox */ - string = entryPtr->string; - break; - case 'd': /* direction, up or down */ - string = change; - break; - case 'W': /* widget name */ - string = Tk_PathName(entryPtr->tkwin); - break; - default: - length = TkUniCharToUtf(ch, numStorage); - numStorage[length] = '\0'; - string = numStorage; - break; - } - } else { - /* - * -validatecommand / -invalidcommand %-substitution - */ - - switch (ch) { - case 'd': /* Type of call that caused validation */ - switch (type) { - case VALIDATE_INSERT: - number = 1; - break; - case VALIDATE_DELETE: - number = 0; - break; - default: - number = -1; - break; - } - sprintf(numStorage, "%d", number); - string = numStorage; - break; - case 'i': /* index of insert/delete */ - sprintf(numStorage, "%d", index); - string = numStorage; - break; - case 'P': /* 'Peeked' new value of the string */ - string = newValue; - break; - case 's': /* Current string value of spinbox */ - string = entryPtr->string; - break; - case 'S': /* string to be inserted/deleted, if any */ - string = change; - break; - case 'v': /* type of validation currently set */ - string = validateStrings[entryPtr->validate]; - break; - case 'V': /* type of validation in effect */ - switch (type) { - case VALIDATE_INSERT: - case VALIDATE_DELETE: - string = validateStrings[VALIDATE_KEY]; - break; - case VALIDATE_FORCED: - string = "forced"; - break; - default: - string = validateStrings[type]; - break; - } - break; - case 'W': /* widget name */ - string = Tk_PathName(entryPtr->tkwin); - break; - default: - length = TkUniCharToUtf(ch, numStorage); - numStorage[length] = '\0'; - string = numStorage; - break; - } - } - - spaceNeeded = Tcl_ScanCountedElement(string, -1, &cvtFlags); - length = Tcl_DStringLength(dsPtr); - Tcl_DStringSetLength(dsPtr, length + spaceNeeded); - spaceNeeded = Tcl_ConvertCountedElement(string, -1, - Tcl_DStringValue(dsPtr) + length, - cvtFlags | TCL_DONT_USE_BRACES); - Tcl_DStringSetLength(dsPtr, length + spaceNeeded); - } -} - -/* - *-------------------------------------------------------------- - * - * Tk_SpinboxObjCmd -- - * - * This function is invoked to process the "spinbox" Tcl command. See the - * user documentation for details on what it does. - * - * Results: - * A standard Tcl result. - * - * Side effects: - * See the user documentation. - * - *-------------------------------------------------------------- - */ - -int -Tk_SpinboxObjCmd( - ClientData clientData, /* NULL. */ - Tcl_Interp *interp, /* Current interpreter. */ - int objc, /* Number of arguments. */ - Tcl_Obj *const objv[]) /* Argument objects. */ -{ - register Entry *entryPtr; - register Spinbox *sbPtr; - Tk_OptionTable optionTable; - Tk_Window tkwin; - char *tmp; - - if (objc < 2) { - Tcl_WrongNumArgs(interp, 1, objv, "pathName ?-option value ...?"); - return TCL_ERROR; - } - - tkwin = Tk_CreateWindowFromPath(interp, Tk_MainWindow(interp), - Tcl_GetString(objv[1]), NULL); - if (tkwin == NULL) { - return TCL_ERROR; - } - - /* - * Create the option table for this widget class. If it has already been - * created, Tk will return the cached value. - */ - - optionTable = Tk_CreateOptionTable(interp, sbOptSpec); - - /* - * Initialize the fields of the structure that won't be initialized by - * ConfigureEntry, or that ConfigureEntry requires to be initialized - * already (e.g. resource pointers). Only the non-NULL/0 data must be - * initialized as memset covers the rest. - */ - - sbPtr = ckalloc(sizeof(Spinbox)); - entryPtr = (Entry *) sbPtr; - memset(sbPtr, 0, sizeof(Spinbox)); - - entryPtr->tkwin = tkwin; - entryPtr->display = Tk_Display(tkwin); - entryPtr->interp = interp; - entryPtr->widgetCmd = Tcl_CreateObjCommand(interp, - Tk_PathName(entryPtr->tkwin), SpinboxWidgetObjCmd, sbPtr, - EntryCmdDeletedProc); - entryPtr->optionTable = optionTable; - entryPtr->type = TK_SPINBOX; - tmp = ckalloc(1); - tmp[0] = '\0'; - entryPtr->string = tmp; - entryPtr->selectFirst = -1; - entryPtr->selectLast = -1; - - entryPtr->cursor = None; - entryPtr->exportSelection = 1; - entryPtr->justify = TK_JUSTIFY_LEFT; - entryPtr->relief = TK_RELIEF_FLAT; - entryPtr->state = STATE_NORMAL; - entryPtr->displayString = entryPtr->string; - entryPtr->inset = XPAD; - entryPtr->textGC = None; - entryPtr->selTextGC = None; - entryPtr->highlightGC = None; - entryPtr->avgWidth = 1; - entryPtr->validate = VALIDATE_NONE; - - sbPtr->selElement = SEL_NONE; - sbPtr->curElement = SEL_NONE; - sbPtr->bCursor = None; - sbPtr->repeatDelay = 400; - sbPtr->repeatInterval = 100; - sbPtr->fromValue = 0.0; - sbPtr->toValue = 100.0; - sbPtr->increment = 1.0; - sbPtr->formatBuf = ckalloc(TCL_DOUBLE_SPACE); - sbPtr->bdRelief = TK_RELIEF_FLAT; - sbPtr->buRelief = TK_RELIEF_FLAT; - - /* - * Keep a hold of the associated tkwin until we destroy the spinbox, - * otherwise Tk might free it while we still need it. - */ - - Tcl_Preserve(entryPtr->tkwin); - - Tk_SetClass(entryPtr->tkwin, "Spinbox"); - Tk_SetClassProcs(entryPtr->tkwin, &entryClass, entryPtr); - Tk_CreateEventHandler(entryPtr->tkwin, - PointerMotionMask|ExposureMask|StructureNotifyMask|FocusChangeMask, - EntryEventProc, entryPtr); - Tk_CreateSelHandler(entryPtr->tkwin, XA_PRIMARY, XA_STRING, - EntryFetchSelection, entryPtr, XA_STRING); - - if (Tk_InitOptions(interp, (char *) sbPtr, optionTable, tkwin) - != TCL_OK) { - Tk_DestroyWindow(entryPtr->tkwin); - return TCL_ERROR; - } - if (ConfigureEntry(interp, entryPtr, objc-2, objv+2) != TCL_OK) { - goto error; - } - - Tcl_SetObjResult(interp, TkNewWindowObj(entryPtr->tkwin)); - return TCL_OK; - - error: - Tk_DestroyWindow(entryPtr->tkwin); - return TCL_ERROR; -} - -/* - *-------------------------------------------------------------- - * - * SpinboxWidgetObjCmd -- - * - * This function is invoked to process the Tcl command that corresponds - * to a widget managed by this module. See the user documentation for - * details on what it does. - * - * Results: - * A standard Tcl result. - * - * Side effects: - * See the user documentation. - * - *-------------------------------------------------------------- - */ - -static int -SpinboxWidgetObjCmd( - ClientData clientData, /* Information about spinbox widget. */ - Tcl_Interp *interp, /* Current interpreter. */ - int objc, /* Number of arguments. */ - Tcl_Obj *const objv[]) /* Argument objects. */ -{ - Entry *entryPtr = clientData; - Spinbox *sbPtr = clientData; - int cmdIndex, selIndex, result; - Tcl_Obj *objPtr; - - if (objc < 2) { - Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?"); - return TCL_ERROR; - } - - /* - * Parse the widget command by looking up the second token in the list of - * valid command names. - */ - - result = Tcl_GetIndexFromObj(interp, objv[1], sbCmdNames, - "option", 0, &cmdIndex); - if (result != TCL_OK) { - return result; - } - - Tcl_Preserve(entryPtr); - switch ((enum sbCmd) cmdIndex) { - case SB_CMD_BBOX: { - int index, x, y, width, height; - Tcl_Obj *bbox[4]; - - if (objc != 3) { - Tcl_WrongNumArgs(interp, 2, objv, "index"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]), - &index) != TCL_OK) { - goto error; - } - if ((index == entryPtr->numChars) && (index > 0)) { - index--; - } - Tk_CharBbox(entryPtr->textLayout, index, &x, &y, &width, &height); - bbox[0] = Tcl_NewIntObj(x + entryPtr->layoutX); - bbox[1] = Tcl_NewIntObj(y + entryPtr->layoutY); - bbox[2] = Tcl_NewIntObj(width); - bbox[3] = Tcl_NewIntObj(height); - Tcl_SetObjResult(interp, Tcl_NewListObj(4, bbox)); - break; - } - - case SB_CMD_CGET: - if (objc != 3) { - Tcl_WrongNumArgs(interp, 2, objv, "option"); - goto error; - } - - objPtr = Tk_GetOptionValue(interp, (char *) entryPtr, - entryPtr->optionTable, objv[2], entryPtr->tkwin); - if (objPtr == NULL) { - goto error; - } - Tcl_SetObjResult(interp, objPtr); - break; - - case SB_CMD_CONFIGURE: - if (objc <= 3) { - objPtr = Tk_GetOptionInfo(interp, (char *) entryPtr, - entryPtr->optionTable, (objc == 3) ? objv[2] : NULL, - entryPtr->tkwin); - if (objPtr == NULL) { - goto error; - } - Tcl_SetObjResult(interp, objPtr); - } else { - result = ConfigureEntry(interp, entryPtr, objc-2, objv+2); - } - break; - - case SB_CMD_DELETE: { - int first, last, code; - - if ((objc < 3) || (objc > 4)) { - Tcl_WrongNumArgs(interp, 2, objv, "firstIndex ?lastIndex?"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]), - &first) != TCL_OK) { - goto error; - } - if (objc == 3) { - last = first + 1; - } else { - if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[3]), - &last) != TCL_OK) { - goto error; - } - } - if ((last >= first) && (entryPtr->state == STATE_NORMAL)) { - code = DeleteChars(entryPtr, first, last - first); - if (code != TCL_OK) { - goto error; - } - } - break; - } - - case SB_CMD_GET: - if (objc != 2) { - Tcl_WrongNumArgs(interp, 2, objv, NULL); - goto error; - } - Tcl_SetObjResult(interp, Tcl_NewStringObj(entryPtr->string, -1)); - break; - - case SB_CMD_ICURSOR: - if (objc != 3) { - Tcl_WrongNumArgs(interp, 2, objv, "pos"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]), - &entryPtr->insertPos) != TCL_OK) { - goto error; - } - EventuallyRedraw(entryPtr); - break; - - case SB_CMD_IDENTIFY: { - int x, y, elem; - - if (objc != 4) { - Tcl_WrongNumArgs(interp, 2, objv, "x y"); - goto error; - } - if ((Tcl_GetIntFromObj(interp, objv[2], &x) != TCL_OK) || - (Tcl_GetIntFromObj(interp, objv[3], &y) != TCL_OK)) { - goto error; - } - elem = GetSpinboxElement(sbPtr, x, y); - if (elem != SEL_NONE) { - Tcl_SetObjResult(interp, - Tcl_NewStringObj(selElementNames[elem], -1)); - } - break; - } - - case SB_CMD_INDEX: { - int index; - - if (objc != 3) { - Tcl_WrongNumArgs(interp, 2, objv, "string"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]), - &index) != TCL_OK) { - goto error; - } - Tcl_SetObjResult(interp, Tcl_NewIntObj(index)); - break; - } - - case SB_CMD_INSERT: { - int index, code; - - if (objc != 4) { - Tcl_WrongNumArgs(interp, 2, objv, "index text"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]), - &index) != TCL_OK) { - goto error; - } - if (entryPtr->state == STATE_NORMAL) { - code = InsertChars(entryPtr, index, Tcl_GetString(objv[3])); - if (code != TCL_OK) { - goto error; - } - } - break; - } - - case SB_CMD_INVOKE: - if (objc != 3) { - Tcl_WrongNumArgs(interp, 2, objv, "elemName"); - goto error; - } - result = Tcl_GetIndexFromObj(interp, objv[2], - selElementNames, "element", 0, &cmdIndex); - if (result != TCL_OK) { - goto error; - } - if (entryPtr->state != STATE_DISABLED) { - if (SpinboxInvoke(interp, sbPtr, cmdIndex) != TCL_OK) { - goto error; - } - } - break; - - case SB_CMD_SCAN: { - int x; - const char *minorCmd; - - if (objc != 4) { - Tcl_WrongNumArgs(interp, 2, objv, "mark|dragto x"); - goto error; - } - if (Tcl_GetIntFromObj(interp, objv[3], &x) != TCL_OK) { - goto error; - } - - minorCmd = Tcl_GetString(objv[2]); - if (minorCmd[0] == 'm' - && (strncmp(minorCmd, "mark", strlen(minorCmd)) == 0)) { - entryPtr->scanMarkX = x; - entryPtr->scanMarkIndex = entryPtr->leftIndex; - } else if ((minorCmd[0] == 'd') - && (strncmp(minorCmd, "dragto", strlen(minorCmd)) == 0)) { - EntryScanTo(entryPtr, x); - } else { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "bad scan option \"%s\": must be mark or dragto", - minorCmd)); - Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "INDEX", "scan option", - minorCmd, NULL); - goto error; - } - break; - } - - case SB_CMD_SELECTION: { - int index, index2; - - if (objc < 3) { - Tcl_WrongNumArgs(interp, 2, objv, "option ?index?"); - goto error; - } - - /* - * Parse the selection sub-command, using the command table - * "sbSelCmdNames" defined above. - */ - - result = Tcl_GetIndexFromObj(interp, objv[2], sbSelCmdNames, - "selection option", 0, &selIndex); - if (result != TCL_OK) { - goto error; - } - - /* - * Disabled entries don't allow the selection to be modified, but - * 'selection present' must return a boolean. - */ - - if ((entryPtr->state == STATE_DISABLED) - && (selIndex != SB_SEL_PRESENT)) { - goto done; - } - - switch (selIndex) { - case SB_SEL_ADJUST: - if (objc != 4) { - Tcl_WrongNumArgs(interp, 3, objv, "index"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, - Tcl_GetString(objv[3]), &index) != TCL_OK) { - goto error; - } - if (entryPtr->selectFirst >= 0) { - int half1, half2; - - half1 = (entryPtr->selectFirst + entryPtr->selectLast)/2; - half2 = (entryPtr->selectFirst + entryPtr->selectLast + 1)/2; - if (index < half1) { - entryPtr->selectAnchor = entryPtr->selectLast; - } else if (index > half2) { - entryPtr->selectAnchor = entryPtr->selectFirst; - } else { - /* - * We're at about the halfway point in the selection; just - * keep the existing anchor. - */ - } - } - EntrySelectTo(entryPtr, index); - break; - - case SB_SEL_CLEAR: - if (objc != 3) { - Tcl_WrongNumArgs(interp, 3, objv, NULL); - goto error; - } - if (entryPtr->selectFirst >= 0) { - entryPtr->selectFirst = -1; - entryPtr->selectLast = -1; - EventuallyRedraw(entryPtr); - } - goto done; - - case SB_SEL_FROM: - if (objc != 4) { - Tcl_WrongNumArgs(interp, 3, objv, "index"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, - Tcl_GetString(objv[3]), &index) != TCL_OK) { - goto error; - } - entryPtr->selectAnchor = index; - break; - - case SB_SEL_PRESENT: - if (objc != 3) { - Tcl_WrongNumArgs(interp, 3, objv, NULL); - goto error; - } - Tcl_SetObjResult(interp, Tcl_NewBooleanObj( - entryPtr->selectFirst >= 0)); - goto done; - - case SB_SEL_RANGE: - if (objc != 5) { - Tcl_WrongNumArgs(interp, 3, objv, "start end"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, - Tcl_GetString(objv[3]), &index) != TCL_OK) { - goto error; - } - if (GetEntryIndex(interp, entryPtr, - Tcl_GetString(objv[4]),& index2) != TCL_OK) { - goto error; - } - if (index >= index2) { - entryPtr->selectFirst = -1; - entryPtr->selectLast = -1; - } else { - entryPtr->selectFirst = index; - entryPtr->selectLast = index2; - } - if (!(entryPtr->flags & GOT_SELECTION) - && entryPtr->exportSelection) { - Tk_OwnSelection(entryPtr->tkwin, XA_PRIMARY, - EntryLostSelection, entryPtr); - entryPtr->flags |= GOT_SELECTION; - } - EventuallyRedraw(entryPtr); - break; - - case SB_SEL_TO: - if (objc != 4) { - Tcl_WrongNumArgs(interp, 3, objv, "index"); - goto error; - } - if (GetEntryIndex(interp, entryPtr, - Tcl_GetString(objv[3]), &index) != TCL_OK) { - goto error; - } - EntrySelectTo(entryPtr, index); - break; - - case SB_SEL_ELEMENT: - if ((objc < 3) || (objc > 4)) { - Tcl_WrongNumArgs(interp, 3, objv, "?elemName?"); - goto error; - } - if (objc == 3) { - Tcl_SetObjResult(interp, Tcl_NewStringObj( - selElementNames[sbPtr->selElement], -1)); - } else { - int lastElement = sbPtr->selElement; - - result = Tcl_GetIndexFromObj(interp, objv[3], selElementNames, - "selection element", 0, &(sbPtr->selElement)); - if (result != TCL_OK) { - goto error; - } - if (lastElement != sbPtr->selElement) { - EventuallyRedraw(entryPtr); - } - } - break; - } - break; - } - - case SB_CMD_SET: { - int code = TCL_OK; - - if (objc > 3) { - Tcl_WrongNumArgs(interp, 2, objv, "?string?"); - goto error; - } - if (objc == 3) { - code = EntryValueChanged(entryPtr, Tcl_GetString(objv[2])); - if (code != TCL_OK) { - goto error; - } - } - Tcl_SetObjResult(interp, Tcl_NewStringObj(entryPtr->string, -1)); - break; - } - - case SB_CMD_VALIDATE: { - int code; - - if (objc != 2) { - Tcl_WrongNumArgs(interp, 2, objv, NULL); - goto error; - } - selIndex = entryPtr->validate; - entryPtr->validate = VALIDATE_ALL; - code = EntryValidateChange(entryPtr, NULL, entryPtr->string, - -1, VALIDATE_FORCED); - if (entryPtr->validate != VALIDATE_NONE) { - entryPtr->validate = selIndex; - } - - Tcl_SetObjResult(interp, Tcl_NewBooleanObj(code == TCL_OK)); - break; - } - - case SB_CMD_XVIEW: { - int index; - - if (objc == 2) { - double first, last; - Tcl_Obj *span[2]; - - EntryVisibleRange(entryPtr, &first, &last); - span[0] = Tcl_NewDoubleObj(first); - span[1] = Tcl_NewDoubleObj(last); - Tcl_SetObjResult(interp, Tcl_NewListObj(2, span)); - goto done; - } else if (objc == 3) { - if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]), - &index) != TCL_OK) { - goto error; - } - } else { - double fraction; - int count; - - index = entryPtr->leftIndex; - switch (Tk_GetScrollInfoObj(interp, objc, objv, &fraction, - &count)) { - case TK_SCROLL_ERROR: - goto error; - case TK_SCROLL_MOVETO: - index = (int) ((fraction * entryPtr->numChars) + 0.5); - break; - case TK_SCROLL_PAGES: { - int charsPerPage; - - charsPerPage = ((Tk_Width(entryPtr->tkwin) - - 2 * entryPtr->inset - entryPtr->xWidth) - / entryPtr->avgWidth) - 2; - if (charsPerPage < 1) { - charsPerPage = 1; - } - index += count * charsPerPage; - break; - } - case TK_SCROLL_UNITS: - index += count; - break; - } - } - if (index >= entryPtr->numChars) { - index = entryPtr->numChars - 1; - } - if (index < 0) { - index = 0; - } - entryPtr->leftIndex = index; - entryPtr->flags |= UPDATE_SCROLLBAR; - EntryComputeGeometry(entryPtr); - EventuallyRedraw(entryPtr); - break; - } - } - - done: - Tcl_Release(entryPtr); - return result; - - error: - Tcl_Release(entryPtr); - return TCL_ERROR; -} - -/* - *--------------------------------------------------------------------------- - * - * GetSpinboxElement -- - * - * Return the element associated with an x,y coord. - * - * Results: - * Element type as enum selelement. - * - * Side effects: - * None. - * - *--------------------------------------------------------------------------- - */ - -static int -GetSpinboxElement( - Spinbox *sbPtr, /* Spinbox for which the index is being - * specified. */ - int x, int y) /* Widget-relative coordinates. */ -{ - Entry *entryPtr = (Entry *) sbPtr; - - if ((x < 0) || (y < 0) || (y > Tk_Height(entryPtr->tkwin)) - || (x > Tk_Width(entryPtr->tkwin))) { - return SEL_NONE; - } - - if (x > (Tk_Width(entryPtr->tkwin) - entryPtr->inset - entryPtr->xWidth)) { - if (y > (Tk_Height(entryPtr->tkwin) / 2)) { - return SEL_BUTTONDOWN; - } else { - return SEL_BUTTONUP; - } - } - return SEL_ENTRY; -} - -/* - *-------------------------------------------------------------- - * - * SpinboxInvoke -- - * - * This function is invoked when the invoke method for the widget is - * called. - * - * Results: - * TCL_OK. - * - * Side effects: - * A background error condition may arise when invoking the callback. - * The widget value may change. - * - *-------------------------------------------------------------- - */ - -static int -SpinboxInvoke( - register Tcl_Interp *interp,/* Current interpreter. */ - register Spinbox *sbPtr, /* Spinbox to invoke. */ - int element) /* Element to invoke, either the "up" or - * "down" button. */ -{ - Entry *entryPtr = (Entry *) sbPtr; - const char *type; - int code, up; - Tcl_DString script; - - switch (element) { - case SEL_BUTTONUP: - type = "up"; - up = 1; - break; - case SEL_BUTTONDOWN: - type = "down"; - up = 0; - break; - default: - return TCL_OK; - } - - code = TCL_OK; - if (fabs(sbPtr->increment) > MIN_DBL_VAL) { - if (sbPtr->listObj != NULL) { - Tcl_Obj *objPtr; - - Tcl_ListObjIndex(interp, sbPtr->listObj, sbPtr->eIndex, &objPtr); - if (strcmp(Tcl_GetString(objPtr), entryPtr->string)) { - /* - * Somehow the string changed from what we expected, so let's - * do a search on the list to see if the current value is - * there. If not, move to the first element of the list. - */ - - int i, listc, elemLen, length = entryPtr->numChars; - const char *bytes; - Tcl_Obj **listv; - - Tcl_ListObjGetElements(interp, sbPtr->listObj, &listc, &listv); - for (i = 0; i < listc; i++) { - bytes = Tcl_GetStringFromObj(listv[i], &elemLen); - if ((length == elemLen) && - (memcmp(bytes, entryPtr->string, - (size_t) length) == 0)) { - sbPtr->eIndex = i; - break; - } - } - } - if (up) { - if (++sbPtr->eIndex >= sbPtr->nElements) { - if (sbPtr->wrap) { - sbPtr->eIndex = 0; - } else { - sbPtr->eIndex = sbPtr->nElements-1; - } - } - } else { - if (--sbPtr->eIndex < 0) { - if (sbPtr->wrap) { - sbPtr->eIndex = sbPtr->nElements-1; - } else { - sbPtr->eIndex = 0; - } - } - } - Tcl_ListObjIndex(interp, sbPtr->listObj, sbPtr->eIndex, &objPtr); - code = EntryValueChanged(entryPtr, Tcl_GetString(objPtr)); - } else if (!DOUBLES_EQ(sbPtr->fromValue, sbPtr->toValue)) { - double dvalue; - - if (sscanf(entryPtr->string, "%lf", &dvalue) <= 0) { - /* - * If the string doesn't scan as a double value, just - * use the -from value - */ - - dvalue = sbPtr->fromValue; - } else if (up) { - dvalue += sbPtr->increment; - if (dvalue > sbPtr->toValue) { - if (sbPtr->wrap) { - dvalue = sbPtr->fromValue; - } else { - dvalue = sbPtr->toValue; - } - } else if (dvalue < sbPtr->fromValue) { - /* - * It's possible that when pressing up, we are still less - * than the fromValue, because the user may have - * manipulated the value by hand. - */ - - dvalue = sbPtr->fromValue; - } - } else { - dvalue -= sbPtr->increment; - if (dvalue < sbPtr->fromValue) { - if (sbPtr->wrap) { - dvalue = sbPtr->toValue; - } else { - dvalue = sbPtr->fromValue; - } - } else if (dvalue > sbPtr->toValue) { - /* - * It's possible that when pressing down, we are still - * greater than the toValue, because the user may have - * manipulated the value by hand. - */ - - dvalue = sbPtr->toValue; - } - } - sprintf(sbPtr->formatBuf, sbPtr->valueFormat, dvalue); - code = EntryValueChanged(entryPtr, sbPtr->formatBuf); - } - } - if (code != TCL_OK) { - return TCL_ERROR; - } - - if (sbPtr->command != NULL) { - Tcl_DStringInit(&script); - ExpandPercents(entryPtr, sbPtr->command, type, "", 0, - VALIDATE_BUTTON, &script); - Tcl_DStringAppend(&script, "", 1); - - code = Tcl_EvalEx(interp, Tcl_DStringValue(&script), -1, - TCL_EVAL_GLOBAL | TCL_EVAL_DIRECT); - Tcl_DStringFree(&script); - - if (code != TCL_OK) { - Tcl_AddErrorInfo(interp, - "\n (in command executed by spinbox)"); - Tcl_BackgroundException(interp, code); - - /* - * Yes, it's an error, but a bg one, so we return OK - */ - - return TCL_OK; - } - - Tcl_ResetResult(interp); - } - - return TCL_OK; -} - -/* - *---------------------------------------------------------------------- - * - * ComputeFormat -- - * - * This function is invoked to recompute the "format" fields of a - * spinbox's widget record, which determines how the value of the dial is - * converted to a string. - * - * Results: - * Tcl result code. - * - * Side effects: - * The format fields of the spinbox are modified. - * - *---------------------------------------------------------------------- - */ - -static int -ComputeFormat( - Spinbox *sbPtr) /* Information about dial widget. */ -{ - double maxValue, x; - int mostSigDigit, numDigits, leastSigDigit, afterDecimal; - int eDigits, fDigits; - - /* - * Compute the displacement from the decimal of the most significant digit - * required for any number in the dial's range. - */ - - if (sbPtr->reqFormat) { - sbPtr->valueFormat = sbPtr->reqFormat; - return TCL_OK; - } - - maxValue = fabs(sbPtr->fromValue); - x = fabs(sbPtr->toValue); - if (x > maxValue) { - maxValue = x; - } - if (maxValue == 0) { - maxValue = 1; - } - mostSigDigit = (int) floor(log10(maxValue)); - - if (fabs(sbPtr->increment) > MIN_DBL_VAL) { - /* - * A increment was specified, so use it. - */ - - leastSigDigit = (int) floor(log10(sbPtr->increment)); - } else { - leastSigDigit = 0; - } - numDigits = mostSigDigit - leastSigDigit + 1; - if (numDigits < 1) { - numDigits = 1; - } - - /* - * Compute the number of characters required using "e" format and "f" - * format, and then choose whichever one takes fewer characters. - */ - - eDigits = numDigits + 4; - if (numDigits > 1) { - eDigits++; /* Decimal point. */ - } - afterDecimal = numDigits - mostSigDigit - 1; - if (afterDecimal < 0) { - afterDecimal = 0; - } - fDigits = (mostSigDigit >= 0) ? mostSigDigit + afterDecimal : afterDecimal; - if (afterDecimal > 0) { - fDigits++; /* Decimal point. */ - } - if (mostSigDigit < 0) { - fDigits++; /* Zero to left of decimal point. */ - } - if (fDigits <= eDigits) { - sprintf(sbPtr->digitFormat, "%%.%df", afterDecimal); - } else { - sprintf(sbPtr->digitFormat, "%%.%de", numDigits-1); - } - sbPtr->valueFormat = sbPtr->digitFormat; - return TCL_OK; -} - -/* - * Local Variables: - * mode: c - * c-basic-offset: 4 - * fill-column: 78 - * End: - */ |