Add native drawing for Entry and Spinbox widgets.

1 files changed, 307 insertions, 0 deletions

diff --git a/generic/tkEntry.h b/generic/tkEntry.h
new file mode 100644
index 0000000..3bb2f1d
--- /dev/null
+++ b/generic/tkEntry.h
@@ -0,0 +1,307 @@
+/*
+ *  tkEntry.h --
+ *  
+ *  This module defined the structures for the Entry & SpinBox widgets.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ *  Copyright (c) 2002 Apple Computer, Inc.
+ *
+ */
+
+#ifndef _TKENTRY
+#define _TKENTRY
+
+#ifndef _TKINT
+#include "tkInt.h"
+#endif
+
+#ifdef BUILD_tk
+# undef TCL_STORAGE_CLASS
+# define TCL_STORAGE_CLASS DLLEXPORT
+#endif
+
+enum EntryType {
+    TK_ENTRY, TK_SPINBOX
+};
+
+/*
+ * A data structure of the following type is kept for each Entry
+ * widget managed by this file:
+ */
+
+typedef struct {
+    Tk_Window tkwin;		/* Window that embodies the entry. NULL
+				 * means that the window has been destroyed
+				 * but the data structures haven't yet been
+				 * cleaned up.*/
+    Display *display;		/* Display containing widget.  Used, among
+				 * other things, so that resources can be
+				 * freed even after tkwin has gone away. */
+    Tcl_Interp *interp;		/* Interpreter associated with entry. */
+    Tcl_Command widgetCmd;	/* Token for entry's widget command. */
+    Tk_OptionTable optionTable;	/* Table that defines configuration options
+				 * available for this widget. */
+    enum EntryType type;	/* Specialized type of Entry widget */
+
+    /*
+     * Fields that are set by widget commands other than "configure".
+     */
+     
+    CONST char *string;		/* Pointer to storage for string;
+				 * NULL-terminated;  malloc-ed. */
+    int insertPos;		/* Character index before which next typed
+				 * character will be inserted. */
+
+    /*
+     * Information about what's selected, if any.
+     */
+
+    int selectFirst;		/* Character index of first selected
+				 * character (-1 means nothing selected. */
+    int selectLast;		/* Character index just after last selected
+				 * character (-1 means nothing selected. */
+    int selectAnchor;		/* Fixed end of selection (i.e. "select to"
+				 * operation will use this as one end of the
+				 * selection). */
+
+    /*
+     * Information for scanning:
+     */
+
+    int scanMarkX;		/* X-position at which scan started (e.g.
+				 * button was pressed here). */
+    int scanMarkIndex;		/* Character index of character that was at
+				 * left of window when scan started. */
+
+    /*
+     * Configuration settings that are updated by Tk_ConfigureWidget.
+     */
+
+    Tk_3DBorder normalBorder;	/* Used for drawing border around whole
+				 * window, plus used for background. */
+    Tk_3DBorder disabledBorder;	/* Used for drawing  border around whole
+				 * window in disabled state, plus used for
+				 * background. */
+    Tk_3DBorder readonlyBorder;	/* Used for drawing  border around whole
+				 * window in readonly state, plus used for
+				 * background. */
+    int borderWidth;		/* Width of 3-D border around window. */
+    Tk_Cursor cursor;		/* Current cursor for window, or None. */
+    int exportSelection;	/* Non-zero means tie internal entry selection
+				 * to X selection. */
+    Tk_Font tkfont;		/* Information about text font, or NULL. */
+    XColor *fgColorPtr;		/* Text color in normal mode. */
+    XColor *dfgColorPtr;	/* Text color in disabled mode. */
+    XColor *highlightBgColorPtr;/* Color for drawing traversal highlight
+				 * area when highlight is off. */
+    XColor *highlightColorPtr;	/* Color for drawing traversal highlight. */
+    int highlightWidth;		/* Width in pixels of highlight to draw
+				 * around widget when it has the focus.
+				 * <= 0 means don't draw a highlight. */
+    Tk_3DBorder insertBorder;	/* Used to draw vertical bar for insertion
+				 * cursor. */
+    int insertBorderWidth;	/* Width of 3-D border around insert cursor. */
+    int insertOffTime;		/* Number of milliseconds cursor should spend
+				 * in "off" state for each blink. */
+    int insertOnTime;		/* Number of milliseconds cursor should spend
+				 * in "on" state for each blink. */
+    int insertWidth;		/* Total width of insert cursor. */
+    Tk_Justify justify;		/* Justification to use for text within
+				 * window. */
+    int relief;			/* 3-D effect: TK_RELIEF_RAISED, etc. */
+    Tk_3DBorder selBorder;	/* Border and background for selected
+				 * characters. */
+    int selBorderWidth;		/* Width of border around selection. */
+    XColor *selFgColorPtr;	/* Foreground color for selected text. */
+    int state;		        /* Normal or disabled.  Entry is read-only
+				 * when disabled. */
+    char *textVarName;		/* Name of variable (malloc'ed) or NULL.
+				 * If non-NULL, entry's string tracks the
+				 * contents of this variable and vice versa. */
+    char *takeFocus;		/* Value of -takefocus option;  not used in
+				 * the C code, but used by keyboard traversal
+				 * scripts.  Malloc'ed, but may be NULL. */
+    int prefWidth;		/* Desired width of window, measured in
+				 * average characters. */
+    char *scrollCmd;		/* Command prefix for communicating with
+				 * scrollbar(s).  Malloc'ed.  NULL means
+				 * no command to issue. */
+    char *showChar;		/* Value of -show option.  If non-NULL, first
+				 * character is used for displaying all
+				 * characters in entry.  Malloc'ed.
+				 * This is only used by the Entry widget. */
+
+    /*
+     * Fields whose values are derived from the current values of the
+     * configuration settings above.
+     */
+
+    CONST char *displayString;	/* String to use when displaying.  This may
+				 * be a pointer to string, or a pointer to
+				 * malloced memory with the same character
+				 * length as string but whose characters
+				 * are all equal to showChar. */
+    int numBytes;		/* Length of string in bytes. */
+    int numChars;		/* Length of string in characters.  Both
+				 * string and displayString have the same
+				 * character length, but may have different
+				 * byte lengths due to being made from
+				 * different UTF-8 characters. */
+    int numDisplayBytes;	/* Length of displayString in bytes. */
+    int inset;			/* Number of pixels on the left and right
+				 * sides that are taken up by XPAD, borderWidth
+				 * (if any), and highlightWidth (if any). */
+    Tk_TextLayout textLayout;	/* Cached text layout information. */
+    int layoutX, layoutY;	/* Origin for layout. */
+    int leftX;			/* X position at which character at leftIndex
+				 * is drawn (varies depending on justify). */
+    int leftIndex;		/* Character index of left-most character
+				 * visible in window. */
+    Tcl_TimerToken insertBlinkHandler;
+				/* Timer handler used to blink cursor on and
+				 * off. */
+    GC textGC;			/* For drawing normal text. */
+    GC selTextGC;		/* For drawing selected text. */
+    GC highlightGC;		/* For drawing traversal highlight. */
+    int avgWidth;		/* Width of average character. */
+    int xWidth;			/* Extra width to reserve for widget.
+				 * Used by spinboxes for button space. */
+    int flags;			/* Miscellaneous flags;  see below for
+				 * definitions. */
+
+    int validate;               /* Non-zero means try to validate */
+    char *validateCmd;          /* Command prefix to use when invoking
+				 * validate command.  NULL means don't
+				 * invoke commands.  Malloc'ed. */
+    char *invalidCmd;		/* Command called when a validation returns 0
+				 * (successfully fails), defaults to {}. */
+
+} Entry;
+
+/*
+ * A data structure of the following type is kept for each spinbox
+ * widget managed by this file:
+ */
+
+typedef struct {
+    Entry entry;		/* A pointer to the generic entry structure.
+				 * This must be the first element of the
+				 * Spinbox. */
+
+    /*
+     * Spinbox specific configuration settings.
+     */
+
+    Tk_3DBorder activeBorder;	/* Used for drawing border around active
+				 * buttons. */
+    Tk_3DBorder buttonBorder;	/* Used for drawing border around buttons. */
+    Tk_Cursor bCursor;		/* cursor for buttons, or None. */
+    int bdRelief;		/* 3-D effect: TK_RELIEF_RAISED, etc. */
+    int buRelief;		/* 3-D effect: TK_RELIEF_RAISED, etc. */
+    char *command;		/* Command to invoke for spin buttons.
+				 * NULL means no command to issue. */
+
+    /*
+     * Spinbox specific fields for use with configuration settings above.
+     */
+
+    int wrap;			/* whether to wrap around when spinning */
+
+    int selElement;		/* currently selected control */
+    int curElement;		/* currently mouseover control */
+
+    int repeatDelay;		/* repeat delay */
+    int repeatInterval;		/* repeat interval */
+
+    double fromValue;		/* Value corresponding to left/top of dial */
+    double toValue;		/* Value corresponding to right/bottom
+				 * of dial */
+    double increment;		/* If > 0, all values are rounded to an
+				 * even multiple of this value. */
+    char *formatBuf;		/* string into which to format value.
+				 * Malloc'ed. */
+    char *reqFormat;		/* Sprintf conversion specifier used for the
+				 * value that the users requests. Malloc'ed. */
+    char *valueFormat;		/* Sprintf conversion specifier used for
+				 * the value. */
+    char digitFormat[10];	/* Sprintf conversion specifier computed from
+				 * digits and other information; used for
+				 * the value. */
+
+    char *valueStr;		/* Values List. Malloc'ed. */
+    Tcl_Obj *listObj;		/* Pointer to the list object being used */
+    int eIndex;			/* Holds the current index into elements */
+    int nElements;		/* Holds the current count of elements */
+
+} Spinbox;
+
+/*
+ * Assigned bits of "flags" fields of Entry structures, and what those
+ * bits mean:
+ *
+ * REDRAW_PENDING:		Non-zero means a DoWhenIdle handler has
+ *				already been queued to redisplay the entry.
+ * BORDER_NEEDED:		Non-zero means 3-D border must be redrawn
+ *				around window during redisplay.  Normally
+ *				only text portion needs to be redrawn.
+ * CURSOR_ON:			Non-zero means insert cursor is displayed at
+ *				present.  0 means it isn't displayed.
+ * GOT_FOCUS:			Non-zero means this window has the input
+ *				focus.
+ * UPDATE_SCROLLBAR:		Non-zero means scrollbar should be updated
+ *				during next redisplay operation.
+ * GOT_SELECTION:		Non-zero means we've claimed the selection.
+ * ENTRY_DELETED:		This entry has been effectively destroyed.
+ * VALIDATING:			Non-zero means we are in a validateCmd
+ * VALIDATE_VAR:		Non-zero means we are attempting to validate
+ *				the entry's textvariable with validateCmd
+ * VALIDATE_ABORT:		Non-zero if validatecommand signals an abort
+ *				for current procedure and make no changes
+ * ENTRY_VAR_TRACED:		Non-zero if a var trace is set.
+ */
+
+#define REDRAW_PENDING		1
+#define BORDER_NEEDED		2
+#define CURSOR_ON		4
+#define GOT_FOCUS		8
+#define UPDATE_SCROLLBAR	0x10
+#define GOT_SELECTION		0x20
+#define ENTRY_DELETED           0x40
+#define VALIDATING              0x80
+#define VALIDATE_VAR            0x100
+#define VALIDATE_ABORT          0x200
+#define ENTRY_VAR_TRACED        0x400
+
+/*
+ * The following enum is used to define a type for the -state option
+ * of the Entry widget.  These values are used as indices into the 
+ * string table below.
+ */
+
+enum state {
+    STATE_DISABLED, STATE_NORMAL, STATE_READONLY
+};
+
+/* 
+ * This is the element index corresponding to the strings in selElementNames.
+ * If you modify them, you must modify the numbers here.
+ */
+ 
+enum selelement {
+    SEL_NONE, SEL_BUTTONDOWN, SEL_BUTTONUP, SEL_NULL, SEL_ENTRY
+};
+
+/*
+ * Declaration of procedures used in the implementation of the native side
+ * of the Entry widget. 
+ */
+
+int TkpDrawEntryBorderAndFocus(Entry *entryPtr, Drawable d, int isSpinbox);
+int TkpDrawSpinboxButtons(Spinbox *sbPtr, Drawable d);
+
+# undef TCL_STORAGE_CLASS
+# define TCL_STORAGE_CLASS DLLIMPORT
+
+#endif /* _TKBUTTON */