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- /*
- * tkUnixButton.c --
- *
- * This file implements the Unix specific portion of the button
- * widgets.
- *
- * Copyright (c) 1996 by 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: @(#) tkUnixButton.c 1.4 97/06/06 11:21:40
- */
-
- #include "tkButton.h"
-
- /*
- * Declaration of Unix specific button structure.
- */
-
- typedef struct UnixButton {
- TkButton info; /* Generic button info. */
- } UnixButton;
-
- /*
- * The class procedure table for the button widgets.
- */
-
- TkClassProcs tkpButtonProcs = {
- NULL, /* createProc. */
- TkButtonWorldChanged, /* geometryProc. */
- NULL /* modalProc. */
- };
-
- /*
- *----------------------------------------------------------------------
- *
- * TkpCreateButton --
- *
- * Allocate a new TkButton structure.
- *
- * Results:
- * Returns a newly allocated TkButton structure.
- *
- * Side effects:
- * Registers an event handler for the widget.
- *
- *----------------------------------------------------------------------
- */
-
- TkButton *
- TkpCreateButton(tkwin)
- Tk_Window tkwin;
- {
- UnixButton *butPtr = (UnixButton *)ckalloc(sizeof(UnixButton));
- return (TkButton *) butPtr;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * TkpDisplayButton --
- *
- * 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.
- *
- *----------------------------------------------------------------------
- */
-
- void
- TkpDisplayButton(clientData)
- ClientData clientData; /* Information about widget. */
- {
- register TkButton *butPtr = (TkButton *) 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:
- TkComputeAnchor(butPtr->anchor, tkwin, 0, 0,
- butPtr->indicatorSpace + width, height, &x, &y);
- x += butPtr->indicatorSpace;
-
- x += offset;
- y += offset;
- 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 {
- TkComputeAnchor(butPtr->anchor, tkwin, butPtr->padX, butPtr->padY,
- butPtr->indicatorSpace + butPtr->textWidth, butPtr->textHeight,
- &x, &y);
-
- x += butPtr->indicatorSpace;
-
- x += offset;
- y += offset;
- if (relief == TK_RELIEF_RAISED) {
- x -= offset;
- y -= offset;
- } else if (relief == TK_RELIEF_SUNKEN) {
- x += offset;
- y += offset;
- }
- Tk_DrawTextLayout(butPtr->display, pixmap, gc, butPtr->textLayout,
- x, y, 0, -1);
- Tk_UnderlineTextLayout(butPtr->display, pixmap, gc,
- butPtr->textLayout, x, y, butPtr->underline);
- 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.
- * This code is complicated by the possible combinations of focus
- * highlight and default rings. We draw the focus and highlight rings
- * using the highlight border and highlight foreground color.
- */
-
- if (relief != TK_RELIEF_FLAT) {
- int inset = butPtr->highlightWidth;
- if (butPtr->defaultState == tkActiveUid) {
- /*
- * Draw the default ring with 2 pixels of space between the
- * default ring and the button and the default ring and the
- * focus ring. Note that we need to explicitly draw the space
- * in the highlightBorder color to ensure that we overwrite any
- * overflow text and/or a different button background color.
- */
-
- Tk_Draw3DRectangle(tkwin, pixmap, butPtr->highlightBorder, inset,
- inset, Tk_Width(tkwin) - 2*inset,
- Tk_Height(tkwin) - 2*inset, 2, TK_RELIEF_FLAT);
- inset += 2;
- Tk_Draw3DRectangle(tkwin, pixmap, butPtr->highlightBorder, inset,
- inset, Tk_Width(tkwin) - 2*inset,
- Tk_Height(tkwin) - 2*inset, 1, TK_RELIEF_SUNKEN);
- inset++;
- Tk_Draw3DRectangle(tkwin, pixmap, butPtr->highlightBorder, inset,
- inset, Tk_Width(tkwin) - 2*inset,
- Tk_Height(tkwin) - 2*inset, 2, TK_RELIEF_FLAT);
-
- inset += 2;
- } else if (butPtr->defaultState == tkNormalUid) {
- /*
- * Leave room for the default ring and write over any text or
- * background color.
- */
-
- Tk_Draw3DRectangle(tkwin, pixmap, butPtr->highlightBorder, 0,
- 0, Tk_Width(tkwin),
- Tk_Height(tkwin), 5, TK_RELIEF_FLAT);
- inset += 5;
- }
-
- /*
- * Draw the button border.
- */
-
- Tk_Draw3DRectangle(tkwin, pixmap, border, inset, inset,
- Tk_Width(tkwin) - 2*inset, Tk_Height(tkwin) - 2*inset,
- butPtr->borderWidth, relief);
- }
- if (butPtr->highlightWidth != 0) {
- GC gc;
-
- if (butPtr->flags & GOT_FOCUS) {
- gc = Tk_GCForColor(butPtr->highlightColorPtr, pixmap);
- } else {
- gc = Tk_GCForColor(Tk_3DBorderColor(butPtr->highlightBorder),
- pixmap);
- }
-
- /*
- * Make sure the focus ring shrink-wraps the actual button, not the
- * padding space left for a default ring.
- */
-
- if (butPtr->defaultState == tkNormalUid) {
- TkDrawInsetFocusHighlight(tkwin, gc, butPtr->highlightWidth,
- pixmap, 5);
- } else {
- 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);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * TkpComputeButtonGeometry --
- *
- * 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.
- *
- *----------------------------------------------------------------------
- */
-
- void
- TkpComputeButtonGeometry(butPtr)
- register TkButton *butPtr; /* Button whose geometry may have changed. */
- {
- int width, height, avgWidth;
- Tk_FontMetrics fm;
-
- if (butPtr->highlightWidth < 0) {
- butPtr->highlightWidth = 0;
- }
- butPtr->inset = butPtr->highlightWidth + butPtr->borderWidth;
-
- /*
- * Leave room for the default ring if needed.
- */
-
- if (butPtr->defaultState != tkDisabledUid) {
- butPtr->inset += 5;
- }
- 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 {
- Tk_FreeTextLayout(butPtr->textLayout);
- butPtr->textLayout = Tk_ComputeTextLayout(butPtr->tkfont,
- butPtr->text, -1, butPtr->wrapLength, butPtr->justify, 0,
- &butPtr->textWidth, &butPtr->textHeight);
-
- width = butPtr->textWidth;
- height = butPtr->textHeight;
- avgWidth = Tk_TextWidth(butPtr->tkfont, "0", 1);
- Tk_GetFontMetrics(butPtr->tkfont, &fm);
-
- if (butPtr->width > 0) {
- width = butPtr->width * avgWidth;
- }
- if (butPtr->height > 0) {
- height = butPtr->height * fm.linespace;
- }
- if ((butPtr->type >= TYPE_CHECK_BUTTON) && butPtr->indicatorOn) {
- butPtr->indicatorDiameter = fm.linespace;
- if (butPtr->type == TYPE_CHECK_BUTTON) {
- butPtr->indicatorDiameter = (80*butPtr->indicatorDiameter)/100;
- }
- butPtr->indicatorSpace = butPtr->indicatorDiameter + avgWidth;
- }
- }
-
- /*
- * 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);
- }
-