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- /*
- * 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 1.128 96/03/01 17:34:49
- */
-
- #include "default.h"
- #include "tkPort.h"
- #include "tkInt.h"
-
- /*
- * A data structure of the following type is kept for each
- * widget managed by this file:
- */
-
- typedef struct {
- Tk_Window tkwin; /* Window that embodies the button. NULL
- * means that the window has been destroyed. */
- Display *display; /* Display containing widget. Needed to
- * free up resources after tkwin is gone. */
- Tcl_Interp *interp; /* Interpreter associated with button. */
- Tcl_Command widgetCmd; /* Token for button's widget command. */
- int type; /* Type of widget: restricts operations
- * that may be performed on widget. See
- * below for possible values. */
-
- /*
- * Information about what's in the button.
- */
-
- char *text; /* Text to display in button (malloc'ed)
- * or NULL. */
- int numChars; /* # of characters in text. */
- int underline; /* Index of character to underline. < 0 means
- * don't underline anything. */
- char *textVarName; /* Name of variable (malloc'ed) or NULL.
- * If non-NULL, button displays the contents
- * of this variable. */
- Pixmap bitmap; /* Bitmap to display or None. If not None
- * then text and textVar are ignored. */
- char *imageString; /* Name of image to display (malloc'ed), or
- * NULL. If non-NULL, bitmap, text, and
- * textVarName are ignored. */
- Tk_Image image; /* Image to display in window, or NULL if
- * none. */
- char *selectImageString; /* Name of image to display when selected
- * (malloc'ed), or NULL. */
- Tk_Image selectImage; /* Image to display in window when selected,
- * or NULL if none. Ignored if image is
- * NULL. */
-
- /*
- * Information used when displaying widget:
- */
-
- Tk_Uid state; /* State of button for display purposes:
- * normal, active, or disabled. */
- Tk_3DBorder normalBorder; /* Structure used to draw 3-D
- * border and background when window
- * isn't active. NULL means no such
- * border exists. */
- Tk_3DBorder activeBorder; /* Structure used to draw 3-D
- * border and background when window
- * is active. NULL means no such
- * border exists. */
- int borderWidth; /* Width of border. */
- int relief; /* 3-d effect: TK_RELIEF_RAISED, etc. */
- int highlightWidth; /* Width in pixels of highlight to draw
- * around widget when it has the focus.
- * <= 0 means don't draw a highlight. */
- XColor *highlightBgColorPtr;
- /* Color for drawing traversal highlight
- * area when highlight is off. */
- XColor *highlightColorPtr; /* Color for drawing traversal highlight. */
- int inset; /* Total width of all borders, including
- * traversal highlight and 3-D border.
- * Indicates how much interior stuff must
- * be offset from outside edges to leave
- * room for borders. */
- XFontStruct *fontPtr; /* Information about text font, or NULL. */
- XColor *normalFg; /* Foreground color in normal mode. */
- XColor *activeFg; /* Foreground color in active mode. NULL
- * means use normalFg instead. */
- XColor *disabledFg; /* Foreground color when disabled. NULL
- * means use normalFg with a 50% stipple
- * instead. */
- GC normalTextGC; /* GC for drawing text in normal mode. Also
- * used to copy from off-screen pixmap onto
- * screen. */
- GC activeTextGC; /* GC for drawing text in active mode (NULL
- * means use normalTextGC). */
- Pixmap gray; /* Pixmap for displaying disabled text if
- * disabledFg is NULL. */
- GC disabledGC; /* Used to produce disabled effect. If
- * disabledFg isn't NULL, this GC is used to
- * draw button text or icon. Otherwise
- * text or icon is drawn with normalGC and
- * this GC is used to stipple background
- * across it. For labels this is None. */
- GC copyGC; /* Used for copying information from an
- * off-screen pixmap to the screen. */
- char *widthString; /* Value of -width option. Malloc'ed. */
- char *heightString; /* Value of -height option. Malloc'ed. */
- int width, height; /* If > 0, these specify dimensions to request
- * for window, in characters for text and in
- * pixels for bitmaps. In this case the actual
- * size of the text string or bitmap is
- * ignored in computing desired window size. */
- int wrapLength; /* Line length (in pixels) at which to wrap
- * onto next line. <= 0 means don't wrap
- * except at newlines. */
- int padX, padY; /* Extra space around text (pixels to leave
- * on each side). Ignored for bitmaps and
- * images. */
- Tk_Anchor anchor; /* Where text/bitmap should be displayed
- * inside button region. */
- Tk_Justify justify; /* Justification to use for multi-line text. */
- int indicatorOn; /* True means draw indicator, false means
- * don't draw it. */
- Tk_3DBorder selectBorder; /* For drawing indicator background, or perhaps
- * widget background, when selected. */
- int textWidth; /* Width needed to display text as requested,
- * in pixels. */
- int textHeight; /* Height needed to display text as requested,
- * in pixels. */
- int indicatorSpace; /* Horizontal space (in pixels) allocated for
- * display of indicator. */
- int indicatorDiameter; /* Diameter of indicator, in pixels. */
-
- /*
- * For check and radio buttons, the fields below are used
- * to manage the variable indicating the button's state.
- */
-
- char *selVarName; /* Name of variable used to control selected
- * state of button. Malloc'ed (if
- * not NULL). */
- char *onValue; /* Value to store in variable when
- * this button is selected. Malloc'ed (if
- * not NULL). */
- char *offValue; /* Value to store in variable when this
- * button isn't selected. Malloc'ed
- * (if not NULL). Valid only for check
- * buttons. */
-
- /*
- * Miscellaneous information:
- */
-
- Tk_Cursor cursor; /* Current cursor for window, or None. */
- char *takeFocus; /* Value of -takefocus option; not used in
- * the C code, but used by keyboard traversal
- * scripts. Malloc'ed, but may be NULL. */
- char *command; /* Command to execute when button is
- * invoked; valid for buttons only.
- * If not NULL, it's malloc-ed. */
- int flags; /* Various flags; see below for
- * definitions. */
- #ifdef STk_CODE
- int string; /* if true the value of the variable associated
- * to the button must be "stringified"
- */
- #endif
- } Button;
-
- /*
- * Possible "type" values for buttons. These are the kinds of
- * widgets supported by this file. The ordering of the type
- * numbers is significant: greater means more features and is
- * used in the code.
- */
-
- #define TYPE_LABEL 0
- #define TYPE_BUTTON 1
- #define TYPE_CHECK_BUTTON 2
- #define TYPE_RADIO_BUTTON 3
-
- /*
- * Class names for buttons, indexed by one of the type values above.
- */
-
- static char *classNames[] = {"Label", "Button", "Checkbutton", "Radiobutton"};
-
- /*
- * Flag bits for buttons:
- *
- * REDRAW_PENDING: Non-zero means a DoWhenIdle handler
- * has already been queued to redraw
- * this window.
- * SELECTED: Non-zero means this button is selected,
- * so special highlight should be drawn.
- * GOT_FOCUS: Non-zero means this button currently
- * has the input focus.
- */
-
- #define REDRAW_PENDING 1
- #define SELECTED 2
- #define GOT_FOCUS 4
-
- /*
- * Mask values used to selectively enable entries in the
- * configuration specs:
- */
-
- #define LABEL_MASK TK_CONFIG_USER_BIT
- #define BUTTON_MASK TK_CONFIG_USER_BIT << 1
- #define CHECK_BUTTON_MASK TK_CONFIG_USER_BIT << 2
- #define RADIO_BUTTON_MASK TK_CONFIG_USER_BIT << 3
- #define ALL_MASK (LABEL_MASK | BUTTON_MASK \
- | CHECK_BUTTON_MASK | RADIO_BUTTON_MASK)
-
- static int configFlags[] = {LABEL_MASK, BUTTON_MASK,
- CHECK_BUTTON_MASK, RADIO_BUTTON_MASK};
-
- /*
- * Information used for parsing configuration specs:
- */
-
- static Tk_ConfigSpec configSpecs[] = {
- {TK_CONFIG_BORDER, "-activebackground", "activeBackground", "Foreground",
- DEF_BUTTON_ACTIVE_BG_COLOR, Tk_Offset(Button, 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(Button, 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(Button, activeFg),
- BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK
- |TK_CONFIG_COLOR_ONLY},
- {TK_CONFIG_COLOR, "-activeforeground", "activeForeground", "Background",
- DEF_BUTTON_ACTIVE_FG_MONO, Tk_Offset(Button, activeFg),
- BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK
- |TK_CONFIG_MONO_ONLY},
- {TK_CONFIG_ANCHOR, "-anchor", "anchor", "Anchor",
- DEF_BUTTON_ANCHOR, Tk_Offset(Button, anchor), ALL_MASK},
- {TK_CONFIG_BORDER, "-background", "background", "Background",
- DEF_BUTTON_BG_COLOR, Tk_Offset(Button, normalBorder),
- ALL_MASK | TK_CONFIG_COLOR_ONLY},
- {TK_CONFIG_BORDER, "-background", "background", "Background",
- DEF_BUTTON_BG_MONO, Tk_Offset(Button, 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(Button, bitmap),
- ALL_MASK|TK_CONFIG_NULL_OK},
- {TK_CONFIG_PIXELS, "-borderwidth", "borderWidth", "BorderWidth",
- DEF_BUTTON_BORDER_WIDTH, Tk_Offset(Button, borderWidth), ALL_MASK},
- #ifdef STk_CODE
- {TK_CONFIG_CLOSURE, "-command", "command", "Command",
- #else
- {TK_CONFIG_STRING, "-command", "command", "Command",
- #endif
- DEF_BUTTON_COMMAND, Tk_Offset(Button, 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(Button, cursor),
- ALL_MASK|TK_CONFIG_NULL_OK},
- {TK_CONFIG_COLOR, "-disabledforeground", "disabledForeground",
- "DisabledForeground", DEF_BUTTON_DISABLED_FG_COLOR,
- Tk_Offset(Button, 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(Button, 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(Button, fontPtr),
- ALL_MASK},
- {TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
- DEF_BUTTON_FG, Tk_Offset(Button, normalFg), ALL_MASK},
- #ifdef STk_CODE
- {TK_CONFIG_SINT, "-height", "height", "Height",
- #else
- {TK_CONFIG_STRING, "-height", "height", "Height",
- #endif
- DEF_BUTTON_HEIGHT, Tk_Offset(Button, heightString), ALL_MASK},
- {TK_CONFIG_COLOR, "-highlightbackground", "highlightBackground",
- "HighlightBackground", DEF_BUTTON_HIGHLIGHT_BG,
- Tk_Offset(Button, highlightBgColorPtr), ALL_MASK},
- {TK_CONFIG_COLOR, "-highlightcolor", "highlightColor", "HighlightColor",
- DEF_BUTTON_HIGHLIGHT, Tk_Offset(Button, highlightColorPtr),
- ALL_MASK},
- {TK_CONFIG_PIXELS, "-highlightthickness", "highlightThickness",
- "HighlightThickness",
- DEF_LABEL_HIGHLIGHT_WIDTH, Tk_Offset(Button, highlightWidth),
- LABEL_MASK},
- {TK_CONFIG_PIXELS, "-highlightthickness", "highlightThickness",
- "HighlightThickness",
- DEF_BUTTON_HIGHLIGHT_WIDTH, Tk_Offset(Button, highlightWidth),
- BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
- {TK_CONFIG_STRING, "-image", "image", "Image",
- DEF_BUTTON_IMAGE, Tk_Offset(Button, imageString),
- ALL_MASK|TK_CONFIG_NULL_OK},
- {TK_CONFIG_BOOLEAN, "-indicatoron", "indicatorOn", "IndicatorOn",
- DEF_BUTTON_INDICATOR, Tk_Offset(Button, indicatorOn),
- CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
- {TK_CONFIG_JUSTIFY, "-justify", "justify", "Justify",
- DEF_BUTTON_JUSTIFY, Tk_Offset(Button, justify), ALL_MASK},
- #ifdef STk_CODE
- {TK_CONFIG_BSTRING, "-offvalue", "offValue", "Value",
- #else
- {TK_CONFIG_STRING, "-offvalue", "offValue", "Value",
- #endif
- DEF_BUTTON_OFF_VALUE, Tk_Offset(Button, offValue),
- CHECK_BUTTON_MASK},
- #ifdef STk_CODE
- {TK_CONFIG_BSTRING, "-onvalue", "onValue", "Value",
- #else
- {TK_CONFIG_STRING, "-onvalue", "onValue", "Value",
- #endif
- DEF_BUTTON_ON_VALUE, Tk_Offset(Button, onValue),
- CHECK_BUTTON_MASK},
- {TK_CONFIG_PIXELS, "-padx", "padX", "Pad",
- DEF_BUTTON_PADX, Tk_Offset(Button, padX), BUTTON_MASK},
- {TK_CONFIG_PIXELS, "-padx", "padX", "Pad",
- DEF_LABCHKRAD_PADX, Tk_Offset(Button, padX),
- LABEL_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
- {TK_CONFIG_PIXELS, "-pady", "padY", "Pad",
- DEF_BUTTON_PADY, Tk_Offset(Button, padY), BUTTON_MASK},
- {TK_CONFIG_PIXELS, "-pady", "padY", "Pad",
- DEF_LABCHKRAD_PADY, Tk_Offset(Button, padY),
- LABEL_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
- {TK_CONFIG_RELIEF, "-relief", "relief", "Relief",
- DEF_BUTTON_RELIEF, Tk_Offset(Button, relief), BUTTON_MASK},
- {TK_CONFIG_RELIEF, "-relief", "relief", "Relief",
- DEF_LABCHKRAD_RELIEF, Tk_Offset(Button, relief),
- LABEL_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
- {TK_CONFIG_BORDER, "-selectcolor", "selectColor", "Background",
- DEF_BUTTON_SELECT_COLOR, Tk_Offset(Button, 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(Button, 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(Button, selectImageString),
- CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_NULL_OK},
- {TK_CONFIG_UID, "-state", "state", "State",
- DEF_BUTTON_STATE, Tk_Offset(Button, state),
- BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
- #ifdef STk_CODE
- {TK_CONFIG_BOOLEAN, "-stringvalue", "stringvalue", "StringValue",
- "#f", Tk_Offset(Button, string),
- BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
- #endif
- #ifdef STk_CODE
- {TK_CONFIG_CLOSURE, "-takefocus", "takeFocus", "TakeFocus",
- #else
- {TK_CONFIG_STRING, "-takefocus", "takeFocus", "TakeFocus",
- #endif
- DEF_LABEL_TAKE_FOCUS, Tk_Offset(Button, takeFocus),
- LABEL_MASK|TK_CONFIG_NULL_OK},
- #ifdef STk_CODE
- {TK_CONFIG_CLOSURE, "-takefocus", "takeFocus", "TakeFocus",
- #else
- {TK_CONFIG_STRING, "-takefocus", "takeFocus", "TakeFocus",
- #endif
- DEF_BUTTON_TAKE_FOCUS, Tk_Offset(Button, takeFocus),
- BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_NULL_OK},
- {TK_CONFIG_STRING, "-text", "text", "Text",
- DEF_BUTTON_TEXT, Tk_Offset(Button, text), ALL_MASK},
- {TK_CONFIG_STRING, "-textvariable", "textVariable", "Variable",
- DEF_BUTTON_TEXT_VARIABLE, Tk_Offset(Button, textVarName),
- ALL_MASK|TK_CONFIG_NULL_OK},
- {TK_CONFIG_INT, "-underline", "underline", "Underline",
- DEF_BUTTON_UNDERLINE, Tk_Offset(Button, underline), ALL_MASK},
- #ifdef STk_CODE
- {TK_CONFIG_BSTRING, "-value", "value", "Value",
- #else
- {TK_CONFIG_STRING, "-value", "value", "Value",
- #endif
- DEF_BUTTON_VALUE, Tk_Offset(Button, onValue),
- RADIO_BUTTON_MASK},
- {TK_CONFIG_STRING, "-variable", "variable", "Variable",
- DEF_RADIOBUTTON_VARIABLE, Tk_Offset(Button, selVarName),
- RADIO_BUTTON_MASK},
- {TK_CONFIG_STRING, "-variable", "variable", "Variable",
- DEF_CHECKBUTTON_VARIABLE, Tk_Offset(Button, selVarName),
- CHECK_BUTTON_MASK|TK_CONFIG_NULL_OK},
- #ifdef STk_CODE
- {TK_CONFIG_SINT, "-width", "width", "Width",
- #else
- {TK_CONFIG_STRING, "-width", "width", "Width",
- #endif
- DEF_BUTTON_WIDTH, Tk_Offset(Button, widthString), ALL_MASK},
- {TK_CONFIG_PIXELS, "-wraplength", "wrapLength", "WrapLength",
- DEF_BUTTON_WRAP_LENGTH, Tk_Offset(Button, 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 void ComputeButtonGeometry _ANSI_ARGS_((Button *butPtr));
- static int ConfigureButton _ANSI_ARGS_((Tcl_Interp *interp,
- Button *butPtr, int argc, char **argv,
- int flags));
- static void DestroyButton _ANSI_ARGS_((Button *butPtr));
- static void DisplayButton _ANSI_ARGS_((ClientData clientData));
- static int InvokeButton _ANSI_ARGS_((Button *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 Button *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;
- }
-
- /*
- * Initialize the data structure for the button.
- */
-
- butPtr = (Button *) ckalloc(sizeof(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->numChars = 0;
- 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->highlightBgColorPtr = NULL;
- butPtr->highlightColorPtr = NULL;
- butPtr->inset = 0;
- butPtr->fontPtr = 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->indicatorOn = 0;
- butPtr->selectBorder = NULL;
- butPtr->indicatorSpace = 0;
- butPtr->indicatorDiameter = 0;
- butPtr->selVarName = NULL;
- butPtr->onValue = NULL;
- butPtr->offValue = NULL;
- butPtr->cursor = None;
- butPtr->command = NULL;
- butPtr->takeFocus = NULL;
- butPtr->flags = 0;
- #ifdef STk_CODE
- butPtr->string = 0;
- #endif
-
- Tk_SetClass(new, classNames[type]);
- 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;
- }
-
- #ifdef STk_CODE
- STk_sharp_dot_result(interp, Tk_PathName(butPtr->tkwin));
- #else
- interp->result = Tk_PathName(butPtr->tkwin);
- #endif
- 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 Button *butPtr = (Button *) clientData;
- int result = TCL_OK;
- size_t length;
- int c;
- #ifdef STk_CODE
- int flag;
- #endif
-
- 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, configSpecs,
- (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, configSpecs,
- (char *) butPtr, (char *) NULL, configFlags[butPtr->type]);
- } else if (argc == 3) {
- result = Tk_ConfigureInfo(interp, butPtr->tkwin, configSpecs,
- (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;
- }
- #ifdef STk_CODE
- flag = (butPtr->string)? STk_STRINGIFY : 0;
- #endif
- if (butPtr->type == TYPE_CHECK_BUTTON) {
- if (Tcl_SetVar(interp, butPtr->selVarName, butPtr->offValue,
- #ifdef STk_CODE
- flag |
- #endif
- TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
- result = TCL_ERROR;
- }
- } else if (butPtr->flags & SELECTED) {
- #ifdef STk_CODE
- if (Tcl_SetVar(interp, butPtr->selVarName, "#t",
- flag|
- #else
- if (Tcl_SetVar(interp, butPtr->selVarName, "",
- #endif
- 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);
- DisplayButton((ClientData) butPtr);
-
- /*
- * Special note: must cancel any existing idle handler
- * for DisplayButton; it's no longer needed, and DisplayButton
- * cleared the REDRAW_PENDING flag.
- */
-
- Tcl_CancelIdleCall(DisplayButton, (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 = InvokeButton(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,
- #ifdef STk_CODE
- ((butPtr->string)? STk_STRINGIFY:0) |
- #endif
- 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,
- #ifdef STk_CODE
- ((butPtr->string)? STk_STRINGIFY:0) |
- #endif
- TCL_GLOBAL_ONLY) == NULL) {
- result = TCL_ERROR;
- }
- } else {
- if (Tcl_SetVar(interp, butPtr->selVarName, butPtr->onValue,
- #ifdef STk_CODE
- ((butPtr->string)? STk_STRINGIFY:0) |
- #endif
- TCL_GLOBAL_ONLY) == 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)
- Button *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_FreeOptions(configSpecs, (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 Button *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. */
- {
- XGCValues gcValues;
- GC newGC;
- unsigned long mask;
- 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, configSpecs,
- 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->highlightWidth < 0) {
- butPtr->highlightWidth = 0;
- }
-
- gcValues.font = butPtr->fontPtr->fid;
- 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;
- newGC = Tk_GetGC(butPtr->tkwin,
- GCForeground|GCBackground|GCFont|GCGraphicsExposures,
- &gcValues);
- if (butPtr->normalTextGC != None) {
- Tk_FreeGC(butPtr->display, butPtr->normalTextGC);
- }
- butPtr->normalTextGC = newGC;
-
- if (butPtr->activeFg != NULL) {
- gcValues.font = butPtr->fontPtr->fid;
- gcValues.foreground = butPtr->activeFg->pixel;
- gcValues.background = Tk_3DBorderColor(butPtr->activeBorder)->pixel;
- newGC = Tk_GetGC(butPtr->tkwin,
- GCForeground|GCBackground|GCFont, &gcValues);
- if (butPtr->activeTextGC != None) {
- Tk_FreeGC(butPtr->display, butPtr->activeTextGC);
- }
- butPtr->activeTextGC = newGC;
- }
-
- if (butPtr->type != TYPE_LABEL) {
- gcValues.font = butPtr->fontPtr-> fid;
- 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;
- if (butPtr->gray == None) {
- butPtr->gray = Tk_GetBitmap(interp, butPtr->tkwin,
- Tk_GetUid("gray50"));
- if (butPtr->gray == None) {
- return TCL_ERROR;
- }
- }
- gcValues.fill_style = FillStippled;
- gcValues.stipple = butPtr->gray;
- mask = GCForeground|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);
- }
-
- 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,
- #ifdef STk_CODE
- (butPtr->type == TYPE_CHECK_BUTTON) ? butPtr->offValue : "#f",
- ((butPtr->string)? STk_STRINGIFY:0) |
- #else
- (butPtr->type == TYPE_CHECK_BUTTON) ? butPtr->offValue : "",
- #endif
- 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,
- #ifdef STk_CODE
- ((butPtr->string)? STk_STRINGIFY:0) |
- #endif
- 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;
- }
- }
- ComputeButtonGeometry(butPtr);
-
- /*
- * Lastly, arrange for the button to be redisplayed.
- */
-
- if (Tk_IsMapped(butPtr->tkwin) && !(butPtr->flags & REDRAW_PENDING)) {
- Tcl_DoWhenIdle(DisplayButton, (ClientData) butPtr);
- butPtr->flags |= REDRAW_PENDING;
- }
-
- return TCL_OK;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * DisplayButton --
- *
- * This procedure is invoked to display a button widget. It is
- * normally invoked as an idle handler.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Commands are output to X to display the button in its
- * current mode. The REDRAW_PENDING flag is cleared.
- *
- *----------------------------------------------------------------------
- */
-
- static void
- DisplayButton(clientData)
- ClientData clientData; /* Information about widget. */
- {
- register Button *butPtr = (Button *) clientData;
- GC gc;
- Tk_3DBorder border;
- Pixmap pixmap;
- int x = 0; /* Initialization only needed to stop
- * compiler warning. */
- int y, relief;
- register Tk_Window tkwin = butPtr->tkwin;
- int width, height;
- int offset; /* 0 means this is a label widget. 1 means
- * it is a flavor of button, so we offset
- * the text to make the button appear to
- * move up and down as the relief changes. */
-
- butPtr->flags &= ~REDRAW_PENDING;
- if ((butPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) {
- return;
- }
-
- border = butPtr->normalBorder;
- if ((butPtr->state == tkDisabledUid) && (butPtr->disabledFg != NULL)) {
- gc = butPtr->disabledGC;
- } else if ((butPtr->state == tkActiveUid)
- && !Tk_StrictMotif(butPtr->tkwin)) {
- gc = butPtr->activeTextGC;
- border = butPtr->activeBorder;
- } else {
- gc = butPtr->normalTextGC;
- }
- if ((butPtr->flags & SELECTED) && (butPtr->state != tkActiveUid)
- && (butPtr->selectBorder != NULL) && !butPtr->indicatorOn) {
- border = butPtr->selectBorder;
- }
-
- /*
- * Override the relief specified for the button if this is a
- * checkbutton or radiobutton and there's no indicator.
- */
-
- relief = butPtr->relief;
- if ((butPtr->type >= TYPE_CHECK_BUTTON) && !butPtr->indicatorOn) {
- relief = (butPtr->flags & SELECTED) ? TK_RELIEF_SUNKEN
- : TK_RELIEF_RAISED;
- }
-
- offset = (butPtr->type == TYPE_BUTTON) && !Tk_StrictMotif(butPtr->tkwin);
-
- /*
- * In order to avoid screen flashes, this procedure redraws
- * the button in a pixmap, then copies the pixmap to the
- * screen in a single operation. This means that there's no
- * point in time where the on-sreen image has been cleared.
- */
-
- pixmap = Tk_GetPixmap(butPtr->display, Tk_WindowId(tkwin),
- Tk_Width(tkwin), Tk_Height(tkwin), Tk_Depth(tkwin));
- Tk_Fill3DRectangle(tkwin, pixmap, border, 0, 0, Tk_Width(tkwin),
- Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
-
- /*
- * Display image or bitmap or text for button.
- */
-
- if (butPtr->image != None) {
- Tk_SizeOfImage(butPtr->image, &width, &height);
-
- imageOrBitmap:
- switch (butPtr->anchor) {
- case TK_ANCHOR_NW: case TK_ANCHOR_W: case TK_ANCHOR_SW:
- x = butPtr->inset + butPtr->indicatorSpace + offset;
- break;
- case TK_ANCHOR_N: case TK_ANCHOR_CENTER: case TK_ANCHOR_S:
- x = ((int) (Tk_Width(tkwin) + butPtr->indicatorSpace
- - width))/2;
- break;
- default:
- x = Tk_Width(tkwin) - butPtr->inset - width - offset;
- break;
- }
- switch (butPtr->anchor) {
- case TK_ANCHOR_NW: case TK_ANCHOR_N: case TK_ANCHOR_NE:
- y = butPtr->inset + offset;
- break;
- case TK_ANCHOR_W: case TK_ANCHOR_CENTER: case TK_ANCHOR_E:
- y = ((int) (Tk_Height(tkwin) - height))/2;
- break;
- default:
- y = Tk_Height(tkwin) - butPtr->inset - height - offset;
- break;
- }
- if (relief == TK_RELIEF_RAISED) {
- x -= offset;
- y -= offset;
- } else if (relief == TK_RELIEF_SUNKEN) {
- x += offset;
- y += offset;
- }
- if (butPtr->image != NULL) {
- if ((butPtr->selectImage != NULL) && (butPtr->flags & SELECTED)) {
- Tk_RedrawImage(butPtr->selectImage, 0, 0, width, height, pixmap,
- x, y);
- } else {
- Tk_RedrawImage(butPtr->image, 0, 0, width, height, pixmap,
- x, y);
- }
- } else {
- XSetClipOrigin(butPtr->display, gc, x, y);
- XCopyPlane(butPtr->display, butPtr->bitmap, pixmap, gc, 0, 0,
- (unsigned int) width, (unsigned int) height, x, y, 1);
- XSetClipOrigin(butPtr->display, gc, 0, 0);
- }
- y += height/2;
- } else if (butPtr->bitmap != None) {
- Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);
- goto imageOrBitmap;
- } else {
- switch (butPtr->anchor) {
- case TK_ANCHOR_NW: case TK_ANCHOR_W: case TK_ANCHOR_SW:
- x = butPtr->inset + butPtr->padX + butPtr->indicatorSpace
- + offset;
- break;
- case TK_ANCHOR_N: case TK_ANCHOR_CENTER: case TK_ANCHOR_S:
- x = ((int) (Tk_Width(tkwin) + butPtr->indicatorSpace
- - butPtr->textWidth))/2;
- break;
- default:
- x = Tk_Width(tkwin) - butPtr->inset - butPtr->padX
- - butPtr->textWidth - offset;
- break;
- }
- switch (butPtr->anchor) {
- case TK_ANCHOR_NW: case TK_ANCHOR_N: case TK_ANCHOR_NE:
- y = butPtr->inset + butPtr->padY + offset;
- break;
- case TK_ANCHOR_W: case TK_ANCHOR_CENTER: case TK_ANCHOR_E:
- y = ((int) (Tk_Height(tkwin) - butPtr->textHeight))/2;
- break;
- default:
- y = Tk_Height(tkwin) - butPtr->inset - butPtr->padY
- - butPtr->textHeight - offset;
- break;
- }
- if (relief == TK_RELIEF_RAISED) {
- x -= offset;
- y -= offset;
- } else if (relief == TK_RELIEF_SUNKEN) {
- x += offset;
- y += offset;
- }
- TkDisplayText(butPtr->display, pixmap, butPtr->fontPtr,
- butPtr->text, butPtr->numChars, x, y, butPtr->textWidth,
- butPtr->justify, butPtr->underline, gc);
- y += butPtr->textHeight/2;
- }
-
- /*
- * Draw the indicator for check buttons and radio buttons. At this
- * point x and y refer to the top-left corner of the text or image
- * or bitmap.
- */
-
- if ((butPtr->type == TYPE_CHECK_BUTTON) && butPtr->indicatorOn) {
- int dim;
-
- dim = butPtr->indicatorDiameter;
- x -= butPtr->indicatorSpace;
- y -= dim/2;
- if (dim > 2*butPtr->borderWidth) {
- Tk_Draw3DRectangle(tkwin, pixmap, border, x, y, dim, dim,
- butPtr->borderWidth,
- (butPtr->flags & SELECTED) ? TK_RELIEF_SUNKEN :
- TK_RELIEF_RAISED);
- x += butPtr->borderWidth;
- y += butPtr->borderWidth;
- dim -= 2*butPtr->borderWidth;
- if (butPtr->flags & SELECTED) {
- GC gc;
-
- gc = Tk_3DBorderGC(tkwin,(butPtr->selectBorder != NULL)
- ? butPtr->selectBorder : butPtr->normalBorder,
- TK_3D_FLAT_GC);
- XFillRectangle(butPtr->display, pixmap, gc, x, y,
- (unsigned int) dim, (unsigned int) dim);
- } else {
- Tk_Fill3DRectangle(tkwin, pixmap, butPtr->normalBorder, x, y,
- dim, dim, butPtr->borderWidth, TK_RELIEF_FLAT);
- }
- }
- } else if ((butPtr->type == TYPE_RADIO_BUTTON) && butPtr->indicatorOn) {
- XPoint points[4];
- int radius;
-
- radius = butPtr->indicatorDiameter/2;
- points[0].x = x - butPtr->indicatorSpace;
- points[0].y = y;
- points[1].x = points[0].x + radius;
- points[1].y = points[0].y + radius;
- points[2].x = points[1].x + radius;
- points[2].y = points[0].y;
- points[3].x = points[1].x;
- points[3].y = points[0].y - radius;
- if (butPtr->flags & SELECTED) {
- GC gc;
-
- gc = Tk_3DBorderGC(tkwin, (butPtr->selectBorder != NULL)
- ? butPtr->selectBorder : butPtr->normalBorder,
- TK_3D_FLAT_GC);
- XFillPolygon(butPtr->display, pixmap, gc, points, 4, Convex,
- CoordModeOrigin);
- } else {
- Tk_Fill3DPolygon(tkwin, pixmap, butPtr->normalBorder, points,
- 4, butPtr->borderWidth, TK_RELIEF_FLAT);
- }
- Tk_Draw3DPolygon(tkwin, pixmap, border, points, 4, butPtr->borderWidth,
- (butPtr->flags & SELECTED) ? TK_RELIEF_SUNKEN :
- TK_RELIEF_RAISED);
- }
-
- /*
- * If the button is disabled with a stipple rather than a special
- * foreground color, generate the stippled effect. If the widget
- * is selected and we use a different background color when selected,
- * must temporarily modify the GC.
- */
-
- if ((butPtr->state == tkDisabledUid)
- && ((butPtr->disabledFg == NULL) || (butPtr->image != NULL))) {
- if ((butPtr->flags & SELECTED) && !butPtr->indicatorOn
- && (butPtr->selectBorder != NULL)) {
- XSetForeground(butPtr->display, butPtr->disabledGC,
- Tk_3DBorderColor(butPtr->selectBorder)->pixel);
- }
- XFillRectangle(butPtr->display, pixmap, butPtr->disabledGC,
- butPtr->inset, butPtr->inset,
- (unsigned) (Tk_Width(tkwin) - 2*butPtr->inset),
- (unsigned) (Tk_Height(tkwin) - 2*butPtr->inset));
- if ((butPtr->flags & SELECTED) && !butPtr->indicatorOn
- && (butPtr->selectBorder != NULL)) {
- XSetForeground(butPtr->display, butPtr->disabledGC,
- Tk_3DBorderColor(butPtr->normalBorder)->pixel);
- }
- }
-
- /*
- * Draw the border and traversal highlight last. This way, if the
- * button's contents overflow they'll be covered up by the border.
- */
-
- if (relief != TK_RELIEF_FLAT) {
- Tk_Draw3DRectangle(tkwin, pixmap, border,
- butPtr->highlightWidth, butPtr->highlightWidth,
- Tk_Width(tkwin) - 2*butPtr->highlightWidth,
- Tk_Height(tkwin) - 2*butPtr->highlightWidth,
- butPtr->borderWidth, relief);
- }
- if (butPtr->highlightWidth != 0) {
- GC gc;
-
- if (butPtr->flags & GOT_FOCUS) {
- gc = Tk_GCForColor(butPtr->highlightColorPtr, pixmap);
- } else {
- gc = Tk_GCForColor(butPtr->highlightBgColorPtr, pixmap);
- }
- Tk_DrawFocusHighlight(tkwin, gc, butPtr->highlightWidth, pixmap);
- }
-
- /*
- * Copy the information from the off-screen pixmap onto the screen,
- * then delete the pixmap.
- */
-
- XCopyArea(butPtr->display, pixmap, Tk_WindowId(tkwin),
- butPtr->copyGC, 0, 0, (unsigned) Tk_Width(tkwin),
- (unsigned) Tk_Height(tkwin), 0, 0);
- Tk_FreePixmap(butPtr->display, pixmap);
- }
-
- /*
- *--------------------------------------------------------------
- *
- * 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. */
- {
- Button *butPtr = (Button *) 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) {
- if (butPtr->tkwin != NULL) {
- butPtr->tkwin = NULL;
- Tcl_DeleteCommand(butPtr->interp,
- Tcl_GetCommandName(butPtr->interp, butPtr->widgetCmd));
- }
- if (butPtr->flags & REDRAW_PENDING) {
- Tcl_CancelIdleCall(DisplayButton, (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(DisplayButton, (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. */
- {
- Button *butPtr = (Button *) 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);
- }
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * ComputeButtonGeometry --
- *
- * After changes in a button's text or bitmap, this procedure
- * recomputes the button's geometry and passes this information
- * along to the geometry manager for the window.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The button's window may change size.
- *
- *----------------------------------------------------------------------
- */
-
- static void
- ComputeButtonGeometry(butPtr)
- register Button *butPtr; /* Button whose geometry may have changed. */
- {
- int width, height;
-
- if (butPtr->highlightWidth < 0) {
- butPtr->highlightWidth = 0;
- }
- butPtr->inset = butPtr->highlightWidth + butPtr->borderWidth;
- butPtr->indicatorSpace = 0;
- if (butPtr->image != NULL) {
- Tk_SizeOfImage(butPtr->image, &width, &height);
- imageOrBitmap:
- if (butPtr->width > 0) {
- width = butPtr->width;
- }
- if (butPtr->height > 0) {
- height = butPtr->height;
- }
- if ((butPtr->type >= TYPE_CHECK_BUTTON) && butPtr->indicatorOn) {
- butPtr->indicatorSpace = height;
- if (butPtr->type == TYPE_CHECK_BUTTON) {
- butPtr->indicatorDiameter = (65*height)/100;
- } else {
- butPtr->indicatorDiameter = (75*height)/100;
- }
- }
- } else if (butPtr->bitmap != None) {
- Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);
- goto imageOrBitmap;
- } else {
- butPtr->numChars = strlen(butPtr->text);
- TkComputeTextGeometry(butPtr->fontPtr, butPtr->text,
- butPtr->numChars, butPtr->wrapLength, &butPtr->textWidth,
- &butPtr->textHeight);
- width = butPtr->textWidth;
- height = butPtr->textHeight;
- if (butPtr->width > 0) {
- width = butPtr->width * XTextWidth(butPtr->fontPtr, "0", 1);
- }
- if (butPtr->height > 0) {
- height = butPtr->height * (butPtr->fontPtr->ascent
- + butPtr->fontPtr->descent);
- }
- if ((butPtr->type >= TYPE_CHECK_BUTTON) && butPtr->indicatorOn) {
- butPtr->indicatorDiameter = butPtr->fontPtr->ascent
- + butPtr->fontPtr->descent;
- if (butPtr->type == TYPE_CHECK_BUTTON) {
- butPtr->indicatorDiameter = (80*butPtr->indicatorDiameter)/100;
- }
- butPtr->indicatorSpace = butPtr->indicatorDiameter
- + XTextWidth(butPtr->fontPtr, "0", 1);
- }
- }
-
- /*
- * When issuing the geometry request, add extra space for the indicator,
- * if any, and for the border and padding, plus two extra pixels so the
- * display can be offset by 1 pixel in either direction for the raised
- * or lowered effect.
- */
-
- if ((butPtr->image == NULL) && (butPtr->bitmap == None)) {
- width += 2*butPtr->padX;
- height += 2*butPtr->padY;
- }
- if ((butPtr->type == TYPE_BUTTON) && !Tk_StrictMotif(butPtr->tkwin)) {
- width += 2;
- height += 2;
- }
- Tk_GeometryRequest(butPtr->tkwin, (int) (width + butPtr->indicatorSpace
- + 2*butPtr->inset), (int) (height + 2*butPtr->inset));
- Tk_SetInternalBorder(butPtr->tkwin, butPtr->inset);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * InvokeButton --
- *
- * 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.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- InvokeButton(butPtr)
- register Button *butPtr; /* Information about button. */
- {
- #ifdef STk_CODE
- int flag = (butPtr->string? STk_STRINGIFY : 0)|TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG;
- #endif
-
- if (butPtr->type == TYPE_CHECK_BUTTON) {
- if (butPtr->flags & SELECTED) {
- if (Tcl_SetVar(butPtr->interp, butPtr->selVarName, butPtr->offValue,
- #ifdef STk_CODE
- flag) == NULL) {
- #else
- TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
- #endif
- return TCL_ERROR;
- }
- } else {
- if (Tcl_SetVar(butPtr->interp, butPtr->selVarName, butPtr->onValue,
- #ifdef STk_CODE
- flag) == NULL) {
- #else
- TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
- #endif
- return TCL_ERROR;
- }
- }
- } else if (butPtr->type == TYPE_RADIO_BUTTON) {
- if (Tcl_SetVar(butPtr->interp, butPtr->selVarName, butPtr->onValue,
- #ifdef STk_CODE
- flag) == NULL) {
- #else
- TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
- #endif
- 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 Button *butPtr = (Button *) 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(DisplayButton, (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 Button *butPtr = (Button *) 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,
- #ifdef STk_CODE
- (butPtr->string? STk_STRINGIFY: 0) |
- #endif
- 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);
- ComputeButtonGeometry(butPtr);
-
- if ((butPtr->tkwin != NULL) && Tk_IsMapped(butPtr->tkwin)
- && !(butPtr->flags & REDRAW_PENDING)) {
- Tcl_DoWhenIdle(DisplayButton, (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 Button *butPtr = (Button *) clientData;
-
- if (butPtr->tkwin != NULL) {
- ComputeButtonGeometry(butPtr);
- if (Tk_IsMapped(butPtr->tkwin) && !(butPtr->flags & REDRAW_PENDING)) {
- Tcl_DoWhenIdle(DisplayButton, (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 Button *butPtr = (Button *) 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(DisplayButton, (ClientData) butPtr);
- butPtr->flags |= REDRAW_PENDING;
- }
- }
-