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-rw-r--r--generic/tkButton.c1347
1 files changed, 1347 insertions, 0 deletions
diff --git a/generic/tkButton.c b/generic/tkButton.c
new file mode 100644
index 0000000..c9c25c2
--- /dev/null
+++ b/generic/tkButton.c
@@ -0,0 +1,1347 @@
+/*
+ * tkButton.c --
+ *
+ * This module implements a collection of button-like
+ * widgets for the Tk toolkit. The widgets implemented
+ * include labels, buttons, check buttons, and radio
+ * buttons.
+ *
+ * Copyright (c) 1990-1994 The Regents of the University of California.
+ * Copyright (c) 1994-1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) tkButton.c 1.144 97/07/31 09:04:57
+ */
+
+#include "tkButton.h"
+#include "default.h"
+
+/*
+ * Class names for buttons, indexed by one of the type values above.
+ */
+
+static char *classNames[] = {"Label", "Button", "Checkbutton", "Radiobutton"};
+
+/*
+ * The class procedure table for the button widget.
+ */
+
+static int configFlags[] = {LABEL_MASK, BUTTON_MASK,
+ CHECK_BUTTON_MASK, RADIO_BUTTON_MASK};
+
+/*
+ * Information used for parsing configuration specs:
+ */
+
+Tk_ConfigSpec tkpButtonConfigSpecs[] = {
+ {TK_CONFIG_BORDER, "-activebackground", "activeBackground", "Foreground",
+ DEF_BUTTON_ACTIVE_BG_COLOR, Tk_Offset(TkButton, activeBorder),
+ BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK
+ |TK_CONFIG_COLOR_ONLY},
+ {TK_CONFIG_BORDER, "-activebackground", "activeBackground", "Foreground",
+ DEF_BUTTON_ACTIVE_BG_MONO, Tk_Offset(TkButton, activeBorder),
+ BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK
+ |TK_CONFIG_MONO_ONLY},
+ {TK_CONFIG_COLOR, "-activeforeground", "activeForeground", "Background",
+ DEF_BUTTON_ACTIVE_FG_COLOR, Tk_Offset(TkButton, activeFg),
+ BUTTON_MASK|TK_CONFIG_COLOR_ONLY},
+ {TK_CONFIG_COLOR, "-activeforeground", "activeForeground", "Background",
+ DEF_CHKRAD_ACTIVE_FG_COLOR, Tk_Offset(TkButton, activeFg),
+ CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_COLOR_ONLY},
+ {TK_CONFIG_COLOR, "-activeforeground", "activeForeground", "Background",
+ DEF_BUTTON_ACTIVE_FG_MONO, Tk_Offset(TkButton, activeFg),
+ BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK
+ |TK_CONFIG_MONO_ONLY},
+ {TK_CONFIG_ANCHOR, "-anchor", "anchor", "Anchor",
+ DEF_BUTTON_ANCHOR, Tk_Offset(TkButton, anchor), ALL_MASK},
+ {TK_CONFIG_BORDER, "-background", "background", "Background",
+ DEF_BUTTON_BG_COLOR, Tk_Offset(TkButton, normalBorder),
+ ALL_MASK | TK_CONFIG_COLOR_ONLY},
+ {TK_CONFIG_BORDER, "-background", "background", "Background",
+ DEF_BUTTON_BG_MONO, Tk_Offset(TkButton, normalBorder),
+ ALL_MASK | TK_CONFIG_MONO_ONLY},
+ {TK_CONFIG_SYNONYM, "-bd", "borderWidth", (char *) NULL,
+ (char *) NULL, 0, ALL_MASK},
+ {TK_CONFIG_SYNONYM, "-bg", "background", (char *) NULL,
+ (char *) NULL, 0, ALL_MASK},
+ {TK_CONFIG_BITMAP, "-bitmap", "bitmap", "Bitmap",
+ DEF_BUTTON_BITMAP, Tk_Offset(TkButton, bitmap),
+ ALL_MASK|TK_CONFIG_NULL_OK},
+ {TK_CONFIG_PIXELS, "-borderwidth", "borderWidth", "BorderWidth",
+ DEF_BUTTON_BORDER_WIDTH, Tk_Offset(TkButton, borderWidth), ALL_MASK},
+ {TK_CONFIG_STRING, "-command", "command", "Command",
+ DEF_BUTTON_COMMAND, Tk_Offset(TkButton, command),
+ BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_NULL_OK},
+ {TK_CONFIG_ACTIVE_CURSOR, "-cursor", "cursor", "Cursor",
+ DEF_BUTTON_CURSOR, Tk_Offset(TkButton, cursor),
+ ALL_MASK|TK_CONFIG_NULL_OK},
+ {TK_CONFIG_UID, "-default", "default", "Default",
+ DEF_BUTTON_DEFAULT, Tk_Offset(TkButton, defaultState), BUTTON_MASK},
+ {TK_CONFIG_COLOR, "-disabledforeground", "disabledForeground",
+ "DisabledForeground", DEF_BUTTON_DISABLED_FG_COLOR,
+ Tk_Offset(TkButton, disabledFg), BUTTON_MASK|CHECK_BUTTON_MASK
+ |RADIO_BUTTON_MASK|TK_CONFIG_COLOR_ONLY|TK_CONFIG_NULL_OK},
+ {TK_CONFIG_COLOR, "-disabledforeground", "disabledForeground",
+ "DisabledForeground", DEF_BUTTON_DISABLED_FG_MONO,
+ Tk_Offset(TkButton, disabledFg), BUTTON_MASK|CHECK_BUTTON_MASK
+ |RADIO_BUTTON_MASK|TK_CONFIG_MONO_ONLY|TK_CONFIG_NULL_OK},
+ {TK_CONFIG_SYNONYM, "-fg", "foreground", (char *) NULL,
+ (char *) NULL, 0, ALL_MASK},
+ {TK_CONFIG_FONT, "-font", "font", "Font",
+ DEF_BUTTON_FONT, Tk_Offset(TkButton, tkfont),
+ ALL_MASK},
+ {TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
+ DEF_BUTTON_FG, Tk_Offset(TkButton, normalFg), LABEL_MASK|BUTTON_MASK},
+ {TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
+ DEF_CHKRAD_FG, Tk_Offset(TkButton, normalFg), CHECK_BUTTON_MASK
+ |RADIO_BUTTON_MASK},
+ {TK_CONFIG_STRING, "-height", "height", "Height",
+ DEF_BUTTON_HEIGHT, Tk_Offset(TkButton, heightString), ALL_MASK},
+ {TK_CONFIG_BORDER, "-highlightbackground", "highlightBackground",
+ "HighlightBackground", DEF_BUTTON_HIGHLIGHT_BG,
+ Tk_Offset(TkButton, highlightBorder), ALL_MASK},
+ {TK_CONFIG_COLOR, "-highlightcolor", "highlightColor", "HighlightColor",
+ DEF_BUTTON_HIGHLIGHT, Tk_Offset(TkButton, highlightColorPtr),
+ ALL_MASK},
+ {TK_CONFIG_PIXELS, "-highlightthickness", "highlightThickness",
+ "HighlightThickness",
+ DEF_LABEL_HIGHLIGHT_WIDTH, Tk_Offset(TkButton, highlightWidth),
+ LABEL_MASK},
+ {TK_CONFIG_PIXELS, "-highlightthickness", "highlightThickness",
+ "HighlightThickness",
+ DEF_BUTTON_HIGHLIGHT_WIDTH, Tk_Offset(TkButton, highlightWidth),
+ BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
+ {TK_CONFIG_STRING, "-image", "image", "Image",
+ DEF_BUTTON_IMAGE, Tk_Offset(TkButton, imageString),
+ ALL_MASK|TK_CONFIG_NULL_OK},
+ {TK_CONFIG_BOOLEAN, "-indicatoron", "indicatorOn", "IndicatorOn",
+ DEF_BUTTON_INDICATOR, Tk_Offset(TkButton, indicatorOn),
+ CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
+ {TK_CONFIG_JUSTIFY, "-justify", "justify", "Justify",
+ DEF_BUTTON_JUSTIFY, Tk_Offset(TkButton, justify), ALL_MASK},
+ {TK_CONFIG_STRING, "-offvalue", "offValue", "Value",
+ DEF_BUTTON_OFF_VALUE, Tk_Offset(TkButton, offValue),
+ CHECK_BUTTON_MASK},
+ {TK_CONFIG_STRING, "-onvalue", "onValue", "Value",
+ DEF_BUTTON_ON_VALUE, Tk_Offset(TkButton, onValue),
+ CHECK_BUTTON_MASK},
+ {TK_CONFIG_PIXELS, "-padx", "padX", "Pad",
+ DEF_BUTTON_PADX, Tk_Offset(TkButton, padX), BUTTON_MASK},
+ {TK_CONFIG_PIXELS, "-padx", "padX", "Pad",
+ DEF_LABCHKRAD_PADX, Tk_Offset(TkButton, padX),
+ LABEL_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
+ {TK_CONFIG_PIXELS, "-pady", "padY", "Pad",
+ DEF_BUTTON_PADY, Tk_Offset(TkButton, padY), BUTTON_MASK},
+ {TK_CONFIG_PIXELS, "-pady", "padY", "Pad",
+ DEF_LABCHKRAD_PADY, Tk_Offset(TkButton, padY),
+ LABEL_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
+ {TK_CONFIG_RELIEF, "-relief", "relief", "Relief",
+ DEF_BUTTON_RELIEF, Tk_Offset(TkButton, relief), BUTTON_MASK},
+ {TK_CONFIG_RELIEF, "-relief", "relief", "Relief",
+ DEF_LABCHKRAD_RELIEF, Tk_Offset(TkButton, relief),
+ LABEL_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
+ {TK_CONFIG_BORDER, "-selectcolor", "selectColor", "Background",
+ DEF_BUTTON_SELECT_COLOR, Tk_Offset(TkButton, selectBorder),
+ CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_COLOR_ONLY
+ |TK_CONFIG_NULL_OK},
+ {TK_CONFIG_BORDER, "-selectcolor", "selectColor", "Background",
+ DEF_BUTTON_SELECT_MONO, Tk_Offset(TkButton, selectBorder),
+ CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_MONO_ONLY
+ |TK_CONFIG_NULL_OK},
+ {TK_CONFIG_STRING, "-selectimage", "selectImage", "SelectImage",
+ DEF_BUTTON_SELECT_IMAGE, Tk_Offset(TkButton, selectImageString),
+ CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_NULL_OK},
+ {TK_CONFIG_UID, "-state", "state", "State",
+ DEF_BUTTON_STATE, Tk_Offset(TkButton, state),
+ BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
+ {TK_CONFIG_STRING, "-takefocus", "takeFocus", "TakeFocus",
+ DEF_LABEL_TAKE_FOCUS, Tk_Offset(TkButton, takeFocus),
+ LABEL_MASK|TK_CONFIG_NULL_OK},
+ {TK_CONFIG_STRING, "-takefocus", "takeFocus", "TakeFocus",
+ DEF_BUTTON_TAKE_FOCUS, Tk_Offset(TkButton, takeFocus),
+ BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_NULL_OK},
+ {TK_CONFIG_STRING, "-text", "text", "Text",
+ DEF_BUTTON_TEXT, Tk_Offset(TkButton, text), ALL_MASK},
+ {TK_CONFIG_STRING, "-textvariable", "textVariable", "Variable",
+ DEF_BUTTON_TEXT_VARIABLE, Tk_Offset(TkButton, textVarName),
+ ALL_MASK|TK_CONFIG_NULL_OK},
+ {TK_CONFIG_INT, "-underline", "underline", "Underline",
+ DEF_BUTTON_UNDERLINE, Tk_Offset(TkButton, underline), ALL_MASK},
+ {TK_CONFIG_STRING, "-value", "value", "Value",
+ DEF_BUTTON_VALUE, Tk_Offset(TkButton, onValue),
+ RADIO_BUTTON_MASK},
+ {TK_CONFIG_STRING, "-variable", "variable", "Variable",
+ DEF_RADIOBUTTON_VARIABLE, Tk_Offset(TkButton, selVarName),
+ RADIO_BUTTON_MASK},
+ {TK_CONFIG_STRING, "-variable", "variable", "Variable",
+ DEF_CHECKBUTTON_VARIABLE, Tk_Offset(TkButton, selVarName),
+ CHECK_BUTTON_MASK|TK_CONFIG_NULL_OK},
+ {TK_CONFIG_STRING, "-width", "width", "Width",
+ DEF_BUTTON_WIDTH, Tk_Offset(TkButton, widthString), ALL_MASK},
+ {TK_CONFIG_PIXELS, "-wraplength", "wrapLength", "WrapLength",
+ DEF_BUTTON_WRAP_LENGTH, Tk_Offset(TkButton, wrapLength), ALL_MASK},
+ {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
+ (char *) NULL, 0, 0}
+};
+
+/*
+ * String to print out in error messages, identifying options for
+ * widget commands for different types of labels or buttons:
+ */
+
+static char *optionStrings[] = {
+ "cget or configure",
+ "cget, configure, flash, or invoke",
+ "cget, configure, deselect, flash, invoke, select, or toggle",
+ "cget, configure, deselect, flash, invoke, or select"
+};
+
+/*
+ * Forward declarations for procedures defined later in this file:
+ */
+
+static void ButtonCmdDeletedProc _ANSI_ARGS_((
+ ClientData clientData));
+static int ButtonCreate _ANSI_ARGS_((ClientData clientData,
+ Tcl_Interp *interp, int argc, char **argv,
+ int type));
+static void ButtonEventProc _ANSI_ARGS_((ClientData clientData,
+ XEvent *eventPtr));
+static void ButtonImageProc _ANSI_ARGS_((ClientData clientData,
+ int x, int y, int width, int height,
+ int imgWidth, int imgHeight));
+static void ButtonSelectImageProc _ANSI_ARGS_((
+ ClientData clientData, int x, int y, int width,
+ int height, int imgWidth, int imgHeight));
+static char * ButtonTextVarProc _ANSI_ARGS_((ClientData clientData,
+ Tcl_Interp *interp, char *name1, char *name2,
+ int flags));
+static char * ButtonVarProc _ANSI_ARGS_((ClientData clientData,
+ Tcl_Interp *interp, char *name1, char *name2,
+ int flags));
+static int ButtonWidgetCmd _ANSI_ARGS_((ClientData clientData,
+ Tcl_Interp *interp, int argc, char **argv));
+static int ConfigureButton _ANSI_ARGS_((Tcl_Interp *interp,
+ TkButton *butPtr, int argc, char **argv,
+ int flags));
+static void DestroyButton _ANSI_ARGS_((TkButton *butPtr));
+
+
+/*
+ *--------------------------------------------------------------
+ *
+ * Tk_ButtonCmd, Tk_CheckbuttonCmd, Tk_LabelCmd, Tk_RadiobuttonCmd --
+ *
+ * These procedures are invoked to process the "button", "label",
+ * "radiobutton", and "checkbutton" Tcl commands. See the
+ * user documentation for details on what they do.
+ *
+ * Results:
+ * A standard Tcl result.
+ *
+ * Side effects:
+ * See the user documentation. These procedures are just wrappers;
+ * they call ButtonCreate to do all of the real work.
+ *
+ *--------------------------------------------------------------
+ */
+
+int
+Tk_ButtonCmd(clientData, interp, argc, argv)
+ ClientData clientData; /* Main window associated with
+ * interpreter. */
+ Tcl_Interp *interp; /* Current interpreter. */
+ int argc; /* Number of arguments. */
+ char **argv; /* Argument strings. */
+{
+ return ButtonCreate(clientData, interp, argc, argv, TYPE_BUTTON);
+}
+
+int
+Tk_CheckbuttonCmd(clientData, interp, argc, argv)
+ ClientData clientData; /* Main window associated with
+ * interpreter. */
+ Tcl_Interp *interp; /* Current interpreter. */
+ int argc; /* Number of arguments. */
+ char **argv; /* Argument strings. */
+{
+ return ButtonCreate(clientData, interp, argc, argv, TYPE_CHECK_BUTTON);
+}
+
+int
+Tk_LabelCmd(clientData, interp, argc, argv)
+ ClientData clientData; /* Main window associated with
+ * interpreter. */
+ Tcl_Interp *interp; /* Current interpreter. */
+ int argc; /* Number of arguments. */
+ char **argv; /* Argument strings. */
+{
+ return ButtonCreate(clientData, interp, argc, argv, TYPE_LABEL);
+}
+
+int
+Tk_RadiobuttonCmd(clientData, interp, argc, argv)
+ ClientData clientData; /* Main window associated with
+ * interpreter. */
+ Tcl_Interp *interp; /* Current interpreter. */
+ int argc; /* Number of arguments. */
+ char **argv; /* Argument strings. */
+{
+ return ButtonCreate(clientData, interp, argc, argv, TYPE_RADIO_BUTTON);
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * ButtonCreate --
+ *
+ * This procedure does all the real work of implementing the
+ * "button", "label", "radiobutton", and "checkbutton" Tcl
+ * commands. See the user documentation for details on what it does.
+ *
+ * Results:
+ * A standard Tcl result.
+ *
+ * Side effects:
+ * See the user documentation.
+ *
+ *--------------------------------------------------------------
+ */
+
+static int
+ButtonCreate(clientData, interp, argc, argv, type)
+ ClientData clientData; /* Main window associated with
+ * interpreter. */
+ Tcl_Interp *interp; /* Current interpreter. */
+ int argc; /* Number of arguments. */
+ char **argv; /* Argument strings. */
+ int type; /* Type of button to create: TYPE_LABEL,
+ * TYPE_BUTTON, TYPE_CHECK_BUTTON, or
+ * TYPE_RADIO_BUTTON. */
+{
+ register TkButton *butPtr;
+ Tk_Window tkwin = (Tk_Window) clientData;
+ Tk_Window new;
+
+ if (argc < 2) {
+ Tcl_AppendResult(interp, "wrong # args: should be \"",
+ argv[0], " pathName ?options?\"", (char *) NULL);
+ return TCL_ERROR;
+ }
+
+ /*
+ * Create the new window.
+ */
+
+ new = Tk_CreateWindowFromPath(interp, tkwin, argv[1], (char *) NULL);
+ if (new == NULL) {
+ return TCL_ERROR;
+ }
+
+ Tk_SetClass(new, classNames[type]);
+ butPtr = TkpCreateButton(new);
+
+ TkSetClassProcs(new, &tkpButtonProcs, (ClientData) butPtr);
+
+ /*
+ * Initialize the data structure for the button.
+ */
+
+ butPtr->tkwin = new;
+ butPtr->display = Tk_Display(new);
+ butPtr->widgetCmd = Tcl_CreateCommand(interp, Tk_PathName(butPtr->tkwin),
+ ButtonWidgetCmd, (ClientData) butPtr, ButtonCmdDeletedProc);
+ butPtr->interp = interp;
+ butPtr->type = type;
+ butPtr->text = NULL;
+ butPtr->underline = -1;
+ butPtr->textVarName = NULL;
+ butPtr->bitmap = None;
+ butPtr->imageString = NULL;
+ butPtr->image = NULL;
+ butPtr->selectImageString = NULL;
+ butPtr->selectImage = NULL;
+ butPtr->state = tkNormalUid;
+ butPtr->normalBorder = NULL;
+ butPtr->activeBorder = NULL;
+ butPtr->borderWidth = 0;
+ butPtr->relief = TK_RELIEF_FLAT;
+ butPtr->highlightWidth = 0;
+ butPtr->highlightBorder = NULL;
+ butPtr->highlightColorPtr = NULL;
+ butPtr->inset = 0;
+ butPtr->tkfont = NULL;
+ butPtr->normalFg = NULL;
+ butPtr->activeFg = NULL;
+ butPtr->disabledFg = NULL;
+ butPtr->normalTextGC = None;
+ butPtr->activeTextGC = None;
+ butPtr->gray = None;
+ butPtr->disabledGC = None;
+ butPtr->copyGC = None;
+ butPtr->widthString = NULL;
+ butPtr->heightString = NULL;
+ butPtr->width = 0;
+ butPtr->height = 0;
+ butPtr->wrapLength = 0;
+ butPtr->padX = 0;
+ butPtr->padY = 0;
+ butPtr->anchor = TK_ANCHOR_CENTER;
+ butPtr->justify = TK_JUSTIFY_CENTER;
+ butPtr->textLayout = NULL;
+ butPtr->indicatorOn = 0;
+ butPtr->selectBorder = NULL;
+ butPtr->indicatorSpace = 0;
+ butPtr->indicatorDiameter = 0;
+ butPtr->defaultState = tkDisabledUid;
+ butPtr->selVarName = NULL;
+ butPtr->onValue = NULL;
+ butPtr->offValue = NULL;
+ butPtr->cursor = None;
+ butPtr->command = NULL;
+ butPtr->takeFocus = NULL;
+ butPtr->flags = 0;
+
+ Tk_CreateEventHandler(butPtr->tkwin,
+ ExposureMask|StructureNotifyMask|FocusChangeMask,
+ ButtonEventProc, (ClientData) butPtr);
+
+ if (ConfigureButton(interp, butPtr, argc - 2, argv + 2,
+ configFlags[type]) != TCL_OK) {
+ Tk_DestroyWindow(butPtr->tkwin);
+ return TCL_ERROR;
+ }
+
+ interp->result = Tk_PathName(butPtr->tkwin);
+ return TCL_OK;
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * ButtonWidgetCmd --
+ *
+ * This procedure 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
+ButtonWidgetCmd(clientData, interp, argc, argv)
+ ClientData clientData; /* Information about button widget. */
+ Tcl_Interp *interp; /* Current interpreter. */
+ int argc; /* Number of arguments. */
+ char **argv; /* Argument strings. */
+{
+ register TkButton *butPtr = (TkButton *) clientData;
+ int result = TCL_OK;
+ size_t length;
+ int c;
+
+ if (argc < 2) {
+ sprintf(interp->result,
+ "wrong # args: should be \"%.50s option ?arg arg ...?\"",
+ argv[0]);
+ return TCL_ERROR;
+ }
+ Tcl_Preserve((ClientData) butPtr);
+ c = argv[1][0];
+ length = strlen(argv[1]);
+
+ if ((c == 'c') && (strncmp(argv[1], "cget", length) == 0)
+ && (length >= 2)) {
+ if (argc != 3) {
+ Tcl_AppendResult(interp, "wrong # args: should be \"",
+ argv[0], " cget option\"",
+ (char *) NULL);
+ goto error;
+ }
+ result = Tk_ConfigureValue(interp, butPtr->tkwin, tkpButtonConfigSpecs,
+ (char *) butPtr, argv[2], configFlags[butPtr->type]);
+ } else if ((c == 'c') && (strncmp(argv[1], "configure", length) == 0)
+ && (length >= 2)) {
+ if (argc == 2) {
+ result = Tk_ConfigureInfo(interp, butPtr->tkwin,
+ tkpButtonConfigSpecs, (char *) butPtr, (char *) NULL,
+ configFlags[butPtr->type]);
+ } else if (argc == 3) {
+ result = Tk_ConfigureInfo(interp, butPtr->tkwin,
+ tkpButtonConfigSpecs, (char *) butPtr, argv[2],
+ configFlags[butPtr->type]);
+ } else {
+ result = ConfigureButton(interp, butPtr, argc-2, argv+2,
+ configFlags[butPtr->type] | TK_CONFIG_ARGV_ONLY);
+ }
+ } else if ((c == 'd') && (strncmp(argv[1], "deselect", length) == 0)
+ && (butPtr->type >= TYPE_CHECK_BUTTON)) {
+ if (argc > 2) {
+ sprintf(interp->result,
+ "wrong # args: should be \"%.50s deselect\"",
+ argv[0]);
+ goto error;
+ }
+ if (butPtr->type == TYPE_CHECK_BUTTON) {
+ if (Tcl_SetVar(interp, butPtr->selVarName, butPtr->offValue,
+ TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
+ result = TCL_ERROR;
+ }
+ } else if (butPtr->flags & SELECTED) {
+ if (Tcl_SetVar(interp, butPtr->selVarName, "",
+ TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
+ result = TCL_ERROR;
+ };
+ }
+ } else if ((c == 'f') && (strncmp(argv[1], "flash", length) == 0)
+ && (butPtr->type != TYPE_LABEL)) {
+ int i;
+
+ if (argc > 2) {
+ sprintf(interp->result,
+ "wrong # args: should be \"%.50s flash\"",
+ argv[0]);
+ goto error;
+ }
+ if (butPtr->state != tkDisabledUid) {
+ for (i = 0; i < 4; i++) {
+ butPtr->state = (butPtr->state == tkNormalUid)
+ ? tkActiveUid : tkNormalUid;
+ Tk_SetBackgroundFromBorder(butPtr->tkwin,
+ (butPtr->state == tkActiveUid) ? butPtr->activeBorder
+ : butPtr->normalBorder);
+ TkpDisplayButton((ClientData) butPtr);
+
+ /*
+ * Special note: must cancel any existing idle handler
+ * for TkpDisplayButton; it's no longer needed, and TkpDisplayButton
+ * cleared the REDRAW_PENDING flag.
+ */
+
+ Tcl_CancelIdleCall(TkpDisplayButton, (ClientData) butPtr);
+ XFlush(butPtr->display);
+ Tcl_Sleep(50);
+ }
+ }
+ } else if ((c == 'i') && (strncmp(argv[1], "invoke", length) == 0)
+ && (butPtr->type > TYPE_LABEL)) {
+ if (argc > 2) {
+ sprintf(interp->result,
+ "wrong # args: should be \"%.50s invoke\"",
+ argv[0]);
+ goto error;
+ }
+ if (butPtr->state != tkDisabledUid) {
+ result = TkInvokeButton(butPtr);
+ }
+ } else if ((c == 's') && (strncmp(argv[1], "select", length) == 0)
+ && (butPtr->type >= TYPE_CHECK_BUTTON)) {
+ if (argc > 2) {
+ sprintf(interp->result,
+ "wrong # args: should be \"%.50s select\"",
+ argv[0]);
+ goto error;
+ }
+ if (Tcl_SetVar(interp, butPtr->selVarName, butPtr->onValue,
+ TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
+ result = TCL_ERROR;
+ }
+ } else if ((c == 't') && (strncmp(argv[1], "toggle", length) == 0)
+ && (length >= 2) && (butPtr->type == TYPE_CHECK_BUTTON)) {
+ if (argc > 2) {
+ sprintf(interp->result,
+ "wrong # args: should be \"%.50s toggle\"",
+ argv[0]);
+ goto error;
+ }
+ if (butPtr->flags & SELECTED) {
+ if (Tcl_SetVar(interp, butPtr->selVarName, butPtr->offValue,
+ TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
+ result = TCL_ERROR;
+ }
+ } else {
+ if (Tcl_SetVar(interp, butPtr->selVarName, butPtr->onValue,
+ TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
+ result = TCL_ERROR;
+ }
+ }
+ } else {
+ sprintf(interp->result,
+ "bad option \"%.50s\": must be %s", argv[1],
+ optionStrings[butPtr->type]);
+ goto error;
+ }
+ Tcl_Release((ClientData) butPtr);
+ return result;
+
+ error:
+ Tcl_Release((ClientData) butPtr);
+ return TCL_ERROR;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DestroyButton --
+ *
+ * This procedure is invoked by Tcl_EventuallyFree or Tcl_Release
+ * to clean up the internal structure of a button at a safe time
+ * (when no-one is using it anymore).
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Everything associated with the widget is freed up.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+DestroyButton(butPtr)
+ TkButton *butPtr; /* Info about button widget. */
+{
+ /*
+ * Free up all the stuff that requires special handling, then
+ * let Tk_FreeOptions handle all the standard option-related
+ * stuff.
+ */
+
+ if (butPtr->textVarName != NULL) {
+ Tcl_UntraceVar(butPtr->interp, butPtr->textVarName,
+ TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
+ ButtonTextVarProc, (ClientData) butPtr);
+ }
+ if (butPtr->image != NULL) {
+ Tk_FreeImage(butPtr->image);
+ }
+ if (butPtr->selectImage != NULL) {
+ Tk_FreeImage(butPtr->selectImage);
+ }
+ if (butPtr->normalTextGC != None) {
+ Tk_FreeGC(butPtr->display, butPtr->normalTextGC);
+ }
+ if (butPtr->activeTextGC != None) {
+ Tk_FreeGC(butPtr->display, butPtr->activeTextGC);
+ }
+ if (butPtr->gray != None) {
+ Tk_FreeBitmap(butPtr->display, butPtr->gray);
+ }
+ if (butPtr->disabledGC != None) {
+ Tk_FreeGC(butPtr->display, butPtr->disabledGC);
+ }
+ if (butPtr->copyGC != None) {
+ Tk_FreeGC(butPtr->display, butPtr->copyGC);
+ }
+ if (butPtr->selVarName != NULL) {
+ Tcl_UntraceVar(butPtr->interp, butPtr->selVarName,
+ TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
+ ButtonVarProc, (ClientData) butPtr);
+ }
+ Tk_FreeTextLayout(butPtr->textLayout);
+ Tk_FreeOptions(tkpButtonConfigSpecs, (char *) butPtr, butPtr->display,
+ configFlags[butPtr->type]);
+ Tcl_EventuallyFree((ClientData)butPtr, TCL_DYNAMIC);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ConfigureButton --
+ *
+ * This procedure is called to process an argv/argc list, plus
+ * the Tk option database, in order to configure (or
+ * reconfigure) a button widget.
+ *
+ * Results:
+ * The return value is a standard Tcl result. If TCL_ERROR is
+ * returned, then interp->result contains an error message.
+ *
+ * Side effects:
+ * Configuration information, such as text string, colors, font,
+ * etc. get set for butPtr; old resources get freed, if there
+ * were any. The button is redisplayed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ConfigureButton(interp, butPtr, argc, argv, flags)
+ Tcl_Interp *interp; /* Used for error reporting. */
+ register TkButton *butPtr; /* Information about widget; may or may
+ * not already have values for some fields. */
+ int argc; /* Number of valid entries in argv. */
+ char **argv; /* Arguments. */
+ int flags; /* Flags to pass to Tk_ConfigureWidget. */
+{
+ Tk_Image image;
+
+ /*
+ * Eliminate any existing trace on variables monitored by the button.
+ */
+
+ if (butPtr->textVarName != NULL) {
+ Tcl_UntraceVar(interp, butPtr->textVarName,
+ TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
+ ButtonTextVarProc, (ClientData) butPtr);
+ }
+ if (butPtr->selVarName != NULL) {
+ Tcl_UntraceVar(interp, butPtr->selVarName,
+ TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
+ ButtonVarProc, (ClientData) butPtr);
+ }
+
+
+
+ if (Tk_ConfigureWidget(interp, butPtr->tkwin, tkpButtonConfigSpecs,
+ argc, argv, (char *) butPtr, flags) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ /*
+ * A few options need special processing, such as setting the
+ * background from a 3-D border, or filling in complicated
+ * defaults that couldn't be specified to Tk_ConfigureWidget.
+ */
+
+ if ((butPtr->state == tkActiveUid) && !Tk_StrictMotif(butPtr->tkwin)) {
+ Tk_SetBackgroundFromBorder(butPtr->tkwin, butPtr->activeBorder);
+ } else {
+ Tk_SetBackgroundFromBorder(butPtr->tkwin, butPtr->normalBorder);
+ if ((butPtr->state != tkNormalUid) && (butPtr->state != tkActiveUid)
+ && (butPtr->state != tkDisabledUid)) {
+ Tcl_AppendResult(interp, "bad state value \"", butPtr->state,
+ "\": must be normal, active, or disabled", (char *) NULL);
+ butPtr->state = tkNormalUid;
+ return TCL_ERROR;
+ }
+ }
+
+ if ((butPtr->defaultState != tkActiveUid)
+ && (butPtr->defaultState != tkDisabledUid)
+ && (butPtr->defaultState != tkNormalUid)) {
+ Tcl_AppendResult(interp, "bad -default value \"", butPtr->defaultState,
+ "\": must be normal, active, or disabled", (char *) NULL);
+ butPtr->defaultState = tkDisabledUid;
+ return TCL_ERROR;
+ }
+
+ if (butPtr->highlightWidth < 0) {
+ butPtr->highlightWidth = 0;
+ }
+
+ if (butPtr->padX < 0) {
+ butPtr->padX = 0;
+ }
+ if (butPtr->padY < 0) {
+ butPtr->padY = 0;
+ }
+
+ if (butPtr->type >= TYPE_CHECK_BUTTON) {
+ char *value;
+
+ if (butPtr->selVarName == NULL) {
+ butPtr->selVarName = (char *) ckalloc((unsigned)
+ (strlen(Tk_Name(butPtr->tkwin)) + 1));
+ strcpy(butPtr->selVarName, Tk_Name(butPtr->tkwin));
+ }
+
+ /*
+ * Select the button if the associated variable has the
+ * appropriate value, initialize the variable if it doesn't
+ * exist, then set a trace on the variable to monitor future
+ * changes to its value.
+ */
+
+ value = Tcl_GetVar(interp, butPtr->selVarName, TCL_GLOBAL_ONLY);
+ butPtr->flags &= ~SELECTED;
+ if (value != NULL) {
+ if (strcmp(value, butPtr->onValue) == 0) {
+ butPtr->flags |= SELECTED;
+ }
+ } else {
+ if (Tcl_SetVar(interp, butPtr->selVarName,
+ (butPtr->type == TYPE_CHECK_BUTTON) ? butPtr->offValue : "",
+ TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
+ return TCL_ERROR;
+ }
+ }
+ Tcl_TraceVar(interp, butPtr->selVarName,
+ TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
+ ButtonVarProc, (ClientData) butPtr);
+ }
+
+ /*
+ * Get the images for the widget, if there are any. Allocate the
+ * new images before freeing the old ones, so that the reference
+ * counts don't go to zero and cause image data to be discarded.
+ */
+
+ if (butPtr->imageString != NULL) {
+ image = Tk_GetImage(butPtr->interp, butPtr->tkwin,
+ butPtr->imageString, ButtonImageProc, (ClientData) butPtr);
+ if (image == NULL) {
+ return TCL_ERROR;
+ }
+ } else {
+ image = NULL;
+ }
+ if (butPtr->image != NULL) {
+ Tk_FreeImage(butPtr->image);
+ }
+ butPtr->image = image;
+ if (butPtr->selectImageString != NULL) {
+ image = Tk_GetImage(butPtr->interp, butPtr->tkwin,
+ butPtr->selectImageString, ButtonSelectImageProc,
+ (ClientData) butPtr);
+ if (image == NULL) {
+ return TCL_ERROR;
+ }
+ } else {
+ image = NULL;
+ }
+ if (butPtr->selectImage != NULL) {
+ Tk_FreeImage(butPtr->selectImage);
+ }
+ butPtr->selectImage = image;
+
+ if ((butPtr->image == NULL) && (butPtr->bitmap == None)
+ && (butPtr->textVarName != NULL)) {
+ /*
+ * The button must display the value of a variable: set up a trace
+ * on the variable's value, create the variable if it doesn't
+ * exist, and fetch its current value.
+ */
+
+ char *value;
+
+ value = Tcl_GetVar(interp, butPtr->textVarName, TCL_GLOBAL_ONLY);
+ if (value == NULL) {
+ if (Tcl_SetVar(interp, butPtr->textVarName, butPtr->text,
+ TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
+ return TCL_ERROR;
+ }
+ } else {
+ if (butPtr->text != NULL) {
+ ckfree(butPtr->text);
+ }
+ butPtr->text = (char *) ckalloc((unsigned) (strlen(value) + 1));
+ strcpy(butPtr->text, value);
+ }
+ Tcl_TraceVar(interp, butPtr->textVarName,
+ TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
+ ButtonTextVarProc, (ClientData) butPtr);
+ }
+
+ if ((butPtr->bitmap != None) || (butPtr->image != NULL)) {
+ if (Tk_GetPixels(interp, butPtr->tkwin, butPtr->widthString,
+ &butPtr->width) != TCL_OK) {
+ widthError:
+ Tcl_AddErrorInfo(interp, "\n (processing -width option)");
+ return TCL_ERROR;
+ }
+ if (Tk_GetPixels(interp, butPtr->tkwin, butPtr->heightString,
+ &butPtr->height) != TCL_OK) {
+ heightError:
+ Tcl_AddErrorInfo(interp, "\n (processing -height option)");
+ return TCL_ERROR;
+ }
+ } else {
+ if (Tcl_GetInt(interp, butPtr->widthString, &butPtr->width)
+ != TCL_OK) {
+ goto widthError;
+ }
+ if (Tcl_GetInt(interp, butPtr->heightString, &butPtr->height)
+ != TCL_OK) {
+ goto heightError;
+ }
+ }
+
+ TkButtonWorldChanged((ClientData) butPtr);
+ return TCL_OK;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TkButtonWorldChanged --
+ *
+ * This procedure 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:
+ * Button will be relayed out and redisplayed.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+void
+TkButtonWorldChanged(instanceData)
+ ClientData instanceData; /* Information about widget. */
+{
+ XGCValues gcValues;
+ GC newGC;
+ unsigned long mask;
+ TkButton *butPtr;
+
+ butPtr = (TkButton *) instanceData;
+
+ /*
+ * Recompute GCs.
+ */
+
+ gcValues.font = Tk_FontId(butPtr->tkfont);
+ gcValues.foreground = butPtr->normalFg->pixel;
+ gcValues.background = Tk_3DBorderColor(butPtr->normalBorder)->pixel;
+
+ /*
+ * Note: GraphicsExpose events are disabled in normalTextGC because it's
+ * used to copy stuff from an off-screen pixmap onto the screen (we know
+ * that there's no problem with obscured areas).
+ */
+
+ gcValues.graphics_exposures = False;
+ mask = GCForeground | GCBackground | GCFont | GCGraphicsExposures;
+ newGC = Tk_GetGC(butPtr->tkwin, mask, &gcValues);
+ if (butPtr->normalTextGC != None) {
+ Tk_FreeGC(butPtr->display, butPtr->normalTextGC);
+ }
+ butPtr->normalTextGC = newGC;
+
+ if (butPtr->activeFg != NULL) {
+ gcValues.font = Tk_FontId(butPtr->tkfont);
+ gcValues.foreground = butPtr->activeFg->pixel;
+ gcValues.background = Tk_3DBorderColor(butPtr->activeBorder)->pixel;
+ mask = GCForeground | GCBackground | GCFont;
+ newGC = Tk_GetGC(butPtr->tkwin, mask, &gcValues);
+ if (butPtr->activeTextGC != None) {
+ Tk_FreeGC(butPtr->display, butPtr->activeTextGC);
+ }
+ butPtr->activeTextGC = newGC;
+ }
+
+ if (butPtr->type != TYPE_LABEL) {
+ gcValues.font = Tk_FontId(butPtr->tkfont);
+ gcValues.background = Tk_3DBorderColor(butPtr->normalBorder)->pixel;
+ if ((butPtr->disabledFg != NULL) && (butPtr->imageString == NULL)) {
+ gcValues.foreground = butPtr->disabledFg->pixel;
+ mask = GCForeground | GCBackground | GCFont;
+ } else {
+ gcValues.foreground = gcValues.background;
+ mask = GCForeground;
+ if (butPtr->gray == None) {
+ butPtr->gray = Tk_GetBitmap(NULL, butPtr->tkwin,
+ Tk_GetUid("gray50"));
+ }
+ if (butPtr->gray != None) {
+ gcValues.fill_style = FillStippled;
+ gcValues.stipple = butPtr->gray;
+ mask |= GCFillStyle | GCStipple;
+ }
+ }
+ newGC = Tk_GetGC(butPtr->tkwin, mask, &gcValues);
+ if (butPtr->disabledGC != None) {
+ Tk_FreeGC(butPtr->display, butPtr->disabledGC);
+ }
+ butPtr->disabledGC = newGC;
+ }
+
+ if (butPtr->copyGC == None) {
+ butPtr->copyGC = Tk_GetGC(butPtr->tkwin, 0, &gcValues);
+ }
+
+ TkpComputeButtonGeometry(butPtr);
+
+ /*
+ * Lastly, arrange for the button to be redisplayed.
+ */
+
+ if (Tk_IsMapped(butPtr->tkwin) && !(butPtr->flags & REDRAW_PENDING)) {
+ Tcl_DoWhenIdle(TkpDisplayButton, (ClientData) butPtr);
+ butPtr->flags |= REDRAW_PENDING;
+ }
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * ButtonEventProc --
+ *
+ * This procedure is invoked by the Tk dispatcher for various
+ * events on buttons.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * When the window gets deleted, internal structures get
+ * cleaned up. When it gets exposed, it is redisplayed.
+ *
+ *--------------------------------------------------------------
+ */
+
+static void
+ButtonEventProc(clientData, eventPtr)
+ ClientData clientData; /* Information about window. */
+ XEvent *eventPtr; /* Information about event. */
+{
+ TkButton *butPtr = (TkButton *) clientData;
+ if ((eventPtr->type == Expose) && (eventPtr->xexpose.count == 0)) {
+ goto redraw;
+ } else if (eventPtr->type == ConfigureNotify) {
+ /*
+ * Must redraw after size changes, since layout could have changed
+ * and borders will need to be redrawn.
+ */
+
+ goto redraw;
+ } else if (eventPtr->type == DestroyNotify) {
+ TkpDestroyButton(butPtr);
+ if (butPtr->tkwin != NULL) {
+ butPtr->tkwin = NULL;
+ Tcl_DeleteCommandFromToken(butPtr->interp, butPtr->widgetCmd);
+ }
+ if (butPtr->flags & REDRAW_PENDING) {
+ Tcl_CancelIdleCall(TkpDisplayButton, (ClientData) butPtr);
+ }
+ DestroyButton(butPtr);
+ } else if (eventPtr->type == FocusIn) {
+ if (eventPtr->xfocus.detail != NotifyInferior) {
+ butPtr->flags |= GOT_FOCUS;
+ if (butPtr->highlightWidth > 0) {
+ goto redraw;
+ }
+ }
+ } else if (eventPtr->type == FocusOut) {
+ if (eventPtr->xfocus.detail != NotifyInferior) {
+ butPtr->flags &= ~GOT_FOCUS;
+ if (butPtr->highlightWidth > 0) {
+ goto redraw;
+ }
+ }
+ }
+ return;
+
+ redraw:
+ if ((butPtr->tkwin != NULL) && !(butPtr->flags & REDRAW_PENDING)) {
+ Tcl_DoWhenIdle(TkpDisplayButton, (ClientData) butPtr);
+ butPtr->flags |= REDRAW_PENDING;
+ }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ButtonCmdDeletedProc --
+ *
+ * This procedure 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
+ButtonCmdDeletedProc(clientData)
+ ClientData clientData; /* Pointer to widget record for widget. */
+{
+ TkButton *butPtr = (TkButton *) clientData;
+ Tk_Window tkwin = butPtr->tkwin;
+
+ /*
+ * This procedure 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 procedure
+ * destroys the widget.
+ */
+
+ if (tkwin != NULL) {
+ butPtr->tkwin = NULL;
+ Tk_DestroyWindow(tkwin);
+ }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkInvokeButton --
+ *
+ * This procedure is called to carry out the actions associated
+ * with a button, such as invoking a Tcl command or setting a
+ * variable. This procedure is invoked, for example, when the
+ * button is invoked via the mouse.
+ *
+ * Results:
+ * A standard Tcl return value. Information is also left in
+ * interp->result.
+ *
+ * Side effects:
+ * Depends on the button and its associated command.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TkInvokeButton(butPtr)
+ register TkButton *butPtr; /* Information about button. */
+{
+ if (butPtr->type == TYPE_CHECK_BUTTON) {
+ if (butPtr->flags & SELECTED) {
+ if (Tcl_SetVar(butPtr->interp, butPtr->selVarName, butPtr->offValue,
+ TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
+ return TCL_ERROR;
+ }
+ } else {
+ if (Tcl_SetVar(butPtr->interp, butPtr->selVarName, butPtr->onValue,
+ TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
+ return TCL_ERROR;
+ }
+ }
+ } else if (butPtr->type == TYPE_RADIO_BUTTON) {
+ if (Tcl_SetVar(butPtr->interp, butPtr->selVarName, butPtr->onValue,
+ TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
+ return TCL_ERROR;
+ }
+ }
+ if ((butPtr->type != TYPE_LABEL) && (butPtr->command != NULL)) {
+ return TkCopyAndGlobalEval(butPtr->interp, butPtr->command);
+ }
+ return TCL_OK;
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * ButtonVarProc --
+ *
+ * This procedure is invoked when someone changes the
+ * state variable associated with a radio button. Depending
+ * on the new value of the button's variable, the button
+ * may be selected or deselected.
+ *
+ * Results:
+ * NULL is always returned.
+ *
+ * Side effects:
+ * The button may become selected or deselected.
+ *
+ *--------------------------------------------------------------
+ */
+
+ /* ARGSUSED */
+static char *
+ButtonVarProc(clientData, interp, name1, name2, flags)
+ ClientData clientData; /* Information about button. */
+ Tcl_Interp *interp; /* Interpreter containing variable. */
+ char *name1; /* Name of variable. */
+ char *name2; /* Second part of variable name. */
+ int flags; /* Information about what happened. */
+{
+ register TkButton *butPtr = (TkButton *) clientData;
+ char *value;
+
+ /*
+ * If the variable is being unset, then just re-establish the
+ * trace unless the whole interpreter is going away.
+ */
+
+ if (flags & TCL_TRACE_UNSETS) {
+ butPtr->flags &= ~SELECTED;
+ if ((flags & TCL_TRACE_DESTROYED) && !(flags & TCL_INTERP_DESTROYED)) {
+ Tcl_TraceVar(interp, butPtr->selVarName,
+ TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
+ ButtonVarProc, clientData);
+ }
+ goto redisplay;
+ }
+
+ /*
+ * Use the value of the variable to update the selected status of
+ * the button.
+ */
+
+ value = Tcl_GetVar(interp, butPtr->selVarName, TCL_GLOBAL_ONLY);
+ if (value == NULL) {
+ value = "";
+ }
+ if (strcmp(value, butPtr->onValue) == 0) {
+ if (butPtr->flags & SELECTED) {
+ return (char *) NULL;
+ }
+ butPtr->flags |= SELECTED;
+ } else if (butPtr->flags & SELECTED) {
+ butPtr->flags &= ~SELECTED;
+ } else {
+ return (char *) NULL;
+ }
+
+ redisplay:
+ if ((butPtr->tkwin != NULL) && Tk_IsMapped(butPtr->tkwin)
+ && !(butPtr->flags & REDRAW_PENDING)) {
+ Tcl_DoWhenIdle(TkpDisplayButton, (ClientData) butPtr);
+ butPtr->flags |= REDRAW_PENDING;
+ }
+ return (char *) NULL;
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * ButtonTextVarProc --
+ *
+ * This procedure is invoked when someone changes the variable
+ * whose contents are to be displayed in a button.
+ *
+ * Results:
+ * NULL is always returned.
+ *
+ * Side effects:
+ * The text displayed in the button will change to match the
+ * variable.
+ *
+ *--------------------------------------------------------------
+ */
+
+ /* ARGSUSED */
+static char *
+ButtonTextVarProc(clientData, interp, name1, name2, flags)
+ ClientData clientData; /* Information about button. */
+ Tcl_Interp *interp; /* Interpreter containing variable. */
+ char *name1; /* Not used. */
+ char *name2; /* Not used. */
+ int flags; /* Information about what happened. */
+{
+ register TkButton *butPtr = (TkButton *) clientData;
+ char *value;
+
+ /*
+ * 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_SetVar(interp, butPtr->textVarName, butPtr->text,
+ TCL_GLOBAL_ONLY);
+ Tcl_TraceVar(interp, butPtr->textVarName,
+ TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
+ ButtonTextVarProc, clientData);
+ }
+ return (char *) NULL;
+ }
+
+ value = Tcl_GetVar(interp, butPtr->textVarName, TCL_GLOBAL_ONLY);
+ if (value == NULL) {
+ value = "";
+ }
+ if (butPtr->text != NULL) {
+ ckfree(butPtr->text);
+ }
+ butPtr->text = (char *) ckalloc((unsigned) (strlen(value) + 1));
+ strcpy(butPtr->text, value);
+ TkpComputeButtonGeometry(butPtr);
+
+ if ((butPtr->tkwin != NULL) && Tk_IsMapped(butPtr->tkwin)
+ && !(butPtr->flags & REDRAW_PENDING)) {
+ Tcl_DoWhenIdle(TkpDisplayButton, (ClientData) butPtr);
+ butPtr->flags |= REDRAW_PENDING;
+ }
+ return (char *) NULL;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ButtonImageProc --
+ *
+ * This procedure is invoked by the image code whenever the manager
+ * for an image does something that affects the size of contents
+ * of an image displayed in a button.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Arranges for the button to get redisplayed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+ButtonImageProc(clientData, x, y, width, height, imgWidth, imgHeight)
+ ClientData clientData; /* Pointer to widget record. */
+ int x, y; /* Upper left pixel (within image)
+ * that must be redisplayed. */
+ int width, height; /* Dimensions of area to redisplay
+ * (may be <= 0). */
+ int imgWidth, imgHeight; /* New dimensions of image. */
+{
+ register TkButton *butPtr = (TkButton *) clientData;
+
+ if (butPtr->tkwin != NULL) {
+ TkpComputeButtonGeometry(butPtr);
+ if (Tk_IsMapped(butPtr->tkwin) && !(butPtr->flags & REDRAW_PENDING)) {
+ Tcl_DoWhenIdle(TkpDisplayButton, (ClientData) butPtr);
+ butPtr->flags |= REDRAW_PENDING;
+ }
+ }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ButtonSelectImageProc --
+ *
+ * This procedure is invoked by the image code whenever the manager
+ * for an image does something that affects the size of contents
+ * of the image displayed in a button when it is selected.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * May arrange for the button to get redisplayed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+ButtonSelectImageProc(clientData, x, y, width, height, imgWidth, imgHeight)
+ ClientData clientData; /* Pointer to widget record. */
+ int x, y; /* Upper left pixel (within image)
+ * that must be redisplayed. */
+ int width, height; /* Dimensions of area to redisplay
+ * (may be <= 0). */
+ int imgWidth, imgHeight; /* New dimensions of image. */
+{
+ register TkButton *butPtr = (TkButton *) clientData;
+
+ /*
+ * Don't recompute geometry: it's controlled by the primary image.
+ */
+
+ if ((butPtr->flags & SELECTED) && (butPtr->tkwin != NULL)
+ && Tk_IsMapped(butPtr->tkwin)
+ && !(butPtr->flags & REDRAW_PENDING)) {
+ Tcl_DoWhenIdle(TkpDisplayButton, (ClientData) butPtr);
+ butPtr->flags |= REDRAW_PENDING;
+ }
+}