diff options
Diffstat (limited to 'tk8.6/macosx/tkMacOSXMenubutton.c')
| -rw-r--r-- | tk8.6/macosx/tkMacOSXMenubutton.c | 824 |
1 files changed, 824 insertions, 0 deletions
diff --git a/tk8.6/macosx/tkMacOSXMenubutton.c b/tk8.6/macosx/tkMacOSXMenubutton.c new file mode 100644 index 0000000..53adb01 --- /dev/null +++ b/tk8.6/macosx/tkMacOSXMenubutton.c @@ -0,0 +1,824 @@ +/* + * tkMacOSXMenubutton.c -- + * + * This file implements the Macintosh specific portion of the menubutton + * widget. + * + * Copyright (c) 1996 by Sun Microsystems, Inc. + * Copyright 2001, Apple Computer, Inc. + * Copyright (c) 2006-2007 Daniel A. Steffen <das@users.sourceforge.net> + * Copyright 2007 Revar Desmera. + * Copyright 2015 Kevin Walzer/WordTech Communications LLC. + * + * See the file "license.terms" for information on usage and redistribution + * of this file, and for a DISCLAIMER OF ALL WARRANTIES. + * + */ + +#include "tkMacOSXPrivate.h" +#include "tkMenu.h" +#include "tkMenubutton.h" +#include "tkMacOSXFont.h" +#include "tkMacOSXDebug.h" + +#define FIRST_DRAW 2 +#define ACTIVE 4 + + +typedef struct { + Tk_3DBorder border; + int relief; + GC gc; + int hasImageOrBitmap; +} DrawParams; + +/* + * Declaration of Mac specific button structure. + */ + +typedef struct MacMenuButton { + TkMenuButton info; /* Generic button info. */ + int flags; + ThemeButtonKind btnkind; + HIThemeButtonDrawInfo drawinfo; + HIThemeButtonDrawInfo lastdrawinfo; + DrawParams drawParams; +} MacMenuButton; + +/* + * Forward declarations for static functions defined later in this file: + */ + +static void MenuButtonEventProc(ClientData clientData, + XEvent *eventPtr); +static void MenuButtonBackgroundDrawCB(MacMenuButton *ptr, + SInt16 depth, Boolean isColorDev); +static void MenuButtonContentDrawCB(ThemeButtonKind kind, + const HIThemeButtonDrawInfo *info, + MacMenuButton *ptr, SInt16 depth, + Boolean isColorDev); +static void MenuButtonEventProc(ClientData clientData, + XEvent *eventPtr); +static void TkMacOSXComputeMenuButtonParams(TkMenuButton *butPtr, + ThemeButtonKind *btnkind, + HIThemeButtonDrawInfo *drawinfo); +static void TkMacOSXComputeMenuButtonDrawParams( + TkMenuButton *butPtr, DrawParams *dpPtr); +static void TkMacOSXDrawMenuButton(MacMenuButton *butPtr, GC gc, + Pixmap pixmap); +static void DrawMenuButtonImageAndText(TkMenuButton *butPtr); + +/* + * The structure below defines menubutton class behavior by means of + * procedures that can be invoked from generic window code. + */ + +Tk_ClassProcs tkpMenubuttonClass = { + sizeof(Tk_ClassProcs), /* size */ + TkMenuButtonWorldChanged, /* worldChangedProc */ +}; + +/* + * We use Apple's Pop-Up Button widget to represent the Tk Menubutton. + * However, we do not use the NSPopUpButton class for this control. Instead we + * render the Pop-Up Button using the HITheme library. This imposes some + * constraints on what can be done. The HITheme renderer allows only specific + * dimensions for the button. + * + * The HITheme library allows drawing a Pop-Up Button with an arbitrary bounds + * rectangle. However the button is always drawn as a rounded box which is 22 + * pixels high. If the bounds rectangle is less than 22 pixels high, the + * button is drawn at the top of the rectangle and the bottom of the button is + * clipped away. So we set a minimum height of 22 pixels for a Menubutton. If + * the bounds rectangle is more than 22 pixels high, then the button is drawn + * centered vertically in the bounds rectangle. + * + * The content rectangle of the button is inset by 14 pixels on the left and 28 + * pixels on the right. The rightmost part of the button contains the blue + * double-arrow symbol which is 28 pixels wide. + * + * To maintain compatibility with code that runs on multiple operating systems, + * the width and height of the content rectangle includes the borderWidth, the + * highlightWidth and the padX and padY dimensions of the Menubutton. However, + * to be consistent with the standard Apple appearance, the content is always + * be drawn at the left side of the content rectangle. All of the excess space + * appears on the right side of the content, and the anchor property is + * ignored. The easiest way to comply with Apple's Human Interface Guidelines + * would be to set bd = highlightthickness = padx = 0 and to specify an + * explicit width for the button. Apple also recommends using the same width + * for all Pop-Up Buttons in a given window. + */ + +#define LEFT_INSET 8 +#define RIGHT_INSET 28 +#define MIN_HEIGHT 22 + +/* + *---------------------------------------------------------------------- + * + * TkpCreateMenuButton -- + * + * Allocate a new TkMenuButton structure. + * + * Results: + * Returns a newly allocated TkMenuButton structure. + * + * Side effects: + * Registers an event handler for the widget. + * + *---------------------------------------------------------------------- + */ + +TkMenuButton * +TkpCreateMenuButton( + Tk_Window tkwin) +{ + MacMenuButton *mbPtr = (MacMenuButton *) ckalloc(sizeof(MacMenuButton)); + + Tk_CreateEventHandler(tkwin, ActivateMask, MenuButtonEventProc, mbPtr); + mbPtr->flags = FIRST_DRAW; + mbPtr->btnkind = kThemePopupButton; + bzero(&mbPtr->drawinfo, sizeof(mbPtr->drawinfo)); + bzero(&mbPtr->lastdrawinfo, sizeof(mbPtr->lastdrawinfo)); + return (TkMenuButton *) mbPtr; +} + +/* + *---------------------------------------------------------------------- + * + * TkpDisplayMenuButton -- + * + * This procedure is invoked to display a menubutton widget. + * + * Results: + * None. + * + * Side effects: + * Commands are output to X to display the menubutton in its current mode. + * + *---------------------------------------------------------------------- + */ + +void +TkpDisplayMenuButton( + ClientData clientData) /* Information about widget. */ +{ + MacMenuButton *mbPtr = clientData; + TkMenuButton *butPtr = clientData; + Tk_Window tkwin = butPtr->tkwin; + Pixmap pixmap; + DrawParams *dpPtr = &mbPtr->drawParams; + + butPtr->flags &= ~REDRAW_PENDING; + if ((butPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) { + return; + } + + pixmap = (Pixmap) Tk_WindowId(tkwin); + + TkMacOSXComputeMenuButtonDrawParams(butPtr, dpPtr); + + /* + * Set up clipping region. Make sure the we are using the port for this + * button, or we will set the wrong window's clip. + */ + + TkMacOSXSetUpClippingRgn(pixmap); + + /* + * Draw the native portion of the buttons. + */ + + TkMacOSXDrawMenuButton(mbPtr, dpPtr->gc, pixmap); + + /* + * Draw highlight border, if needed. + */ + + if (butPtr->highlightWidth < 3) { + if (butPtr->flags & GOT_FOCUS) { + GC gc = Tk_GCForColor(butPtr->highlightColorPtr, pixmap); + TkMacOSXDrawSolidBorder(tkwin, gc, 0, butPtr->highlightWidth); + } + } +} + +/* + *---------------------------------------------------------------------- + * + * TkpDestroyMenuButton -- + * + * Free data structures associated with the menubutton control. This is a + * no-op on the Mac. + * + * Results: + * None. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +void +TkpDestroyMenuButton( + TkMenuButton *mbPtr) +{ +} + +/* + *---------------------------------------------------------------------- + * + * TkpComputeMenuButtonGeometry -- + * + * After changes in a menu button's text or bitmap, this procedure + * recomputes the menu button's geometry and passes this information + * along to the geometry manager for the window. + * + * Results: + * None. + * + * Side effects: + * The menu button's window may change size. + * + *---------------------------------------------------------------------- + */ + +void +TkpComputeMenuButtonGeometry(butPtr) + register TkMenuButton *butPtr; /* Widget record for menu button. */ +{ + int width, height, avgWidth, haveImage = 0, haveText = 0; + int txtWidth, txtHeight; + Tk_FontMetrics fm; + int highlightWidth = butPtr->highlightWidth > 0 ? butPtr->highlightWidth : 0; + + /* + * First compute the size of the contents of the button. + */ + + width = 0; + height = 0; + txtWidth = 0; + txtHeight = 0; + avgWidth = 0; + + if (butPtr->image != NULL) { + Tk_SizeOfImage(butPtr->image, &width, &height); + haveImage = 1; + } else if (butPtr->bitmap != None) { + Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height); + haveImage = 1; + } + + if (butPtr->text && strlen(butPtr->text) > 0) { + haveText = 1; + Tk_FreeTextLayout(butPtr->textLayout); + butPtr->textLayout = Tk_ComputeTextLayout(butPtr->tkfont, + butPtr->text, -1, butPtr->wrapLength, + butPtr->justify, 0, &butPtr->textWidth, &butPtr->textHeight); + txtWidth = butPtr->textWidth; + txtHeight = butPtr->textHeight; + avgWidth = Tk_TextWidth(butPtr->tkfont, "0", 1); + Tk_GetFontMetrics(butPtr->tkfont, &fm); + } + + /* + * If the button is compound (ie, it shows both an image and text), the new + * geometry is a combination of the image and text geometry. We only honor + * the compound bit if the button has both text and an image, because + * otherwise it is not really a compound button. + */ + + if (haveImage && haveText) { + switch ((enum compound) butPtr->compound) { + case COMPOUND_TOP: + case COMPOUND_BOTTOM: + /* + * Image is above or below text + */ + + height += txtHeight + butPtr->padY; + width = (width > txtWidth ? width : txtWidth); + break; + case COMPOUND_LEFT: + case COMPOUND_RIGHT: + /* + * Image is left or right of text + */ + + width += txtWidth + butPtr->padX; + height = (height > txtHeight ? height : txtHeight); + break; + case COMPOUND_CENTER: + /* + * Image and text are superimposed + */ + + width = (width > txtWidth ? width : txtWidth); + height = (height > txtHeight ? height : txtHeight); + break; + case COMPOUND_NONE: + break; + } + + if (butPtr->width > 0) { + width = butPtr->width; + } + if (butPtr->height > 0) { + height = butPtr->height; + } + + } else { + if (haveImage) { /* Image only */ + if (butPtr->width > 0) { + width = butPtr->width; + } + if (butPtr->height > 0) { + height = butPtr->height; + } + } else { /* Text only */ + width = txtWidth; + height = txtHeight; + if (butPtr->width > 0) { + width = butPtr->width * avgWidth + 2*butPtr->padX; + } + if (butPtr->height > 0) { + height = butPtr->height * fm.linespace + 2*butPtr->padY; + } + } + } + + butPtr->inset = highlightWidth + butPtr->borderWidth; + width += LEFT_INSET + RIGHT_INSET + 2*butPtr->inset; + height += 2*butPtr->inset; + height = height < MIN_HEIGHT ? MIN_HEIGHT : height; + Tk_GeometryRequest(butPtr->tkwin, width, height); + Tk_SetInternalBorder(butPtr->tkwin, butPtr->inset); +} + +/* + *---------------------------------------------------------------------- + * + * DrawMenuButtonImageAndText -- + * + * Draws the image and text associated witha button or label. + * + * Results: + * None. + * + * Side effects: + * The image and text are drawn. + * + *---------------------------------------------------------------------- + */ +void +DrawMenuButtonImageAndText( + TkMenuButton *butPtr) +{ + MacMenuButton *mbPtr = (MacMenuButton *) butPtr; + Tk_Window tkwin = butPtr->tkwin; + Pixmap pixmap; + int haveImage = 0, haveText = 0; + int imageWidth = 0, imageHeight = 0; + int imageXOffset = 0, imageYOffset = 0; + int textXOffset = 0, textYOffset = 0; + int width = 0, height = 0; + int fullWidth = 0, fullHeight = 0; + + if (tkwin == NULL || !Tk_IsMapped(tkwin)) { + return; + } + + DrawParams *dpPtr = &mbPtr->drawParams; + pixmap = (Pixmap) Tk_WindowId(tkwin); + + if (butPtr->image != None) { + Tk_SizeOfImage(butPtr->image, &width, &height); + haveImage = 1; + } else if (butPtr->bitmap != None) { + Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height); + haveImage = 1; + } + + imageWidth = width; + imageHeight = height; + + haveText = (butPtr->textWidth != 0 && butPtr->textHeight != 0); + if (butPtr->compound != COMPOUND_NONE && haveImage && haveText) { + int x = 0, y = 0; + + textXOffset = 0; + textYOffset = 0; + fullWidth = 0; + fullHeight = 0; + + switch ((enum compound) butPtr->compound) { + case COMPOUND_TOP: + case COMPOUND_BOTTOM: + /* + * Image is above or below text. + */ + + if (butPtr->compound == COMPOUND_TOP) { + textYOffset = height + butPtr->padY; + } else { + imageYOffset = butPtr->textHeight + butPtr->padY; + } + fullHeight = height + butPtr->textHeight + butPtr->padY; + fullWidth = (width > butPtr->textWidth ? + width : butPtr->textWidth); + textXOffset = (fullWidth - butPtr->textWidth)/2; + imageXOffset = (fullWidth - width)/2; + break; + case COMPOUND_LEFT: + case COMPOUND_RIGHT: + /* + * Image is left or right of text + */ + + if (butPtr->compound == COMPOUND_LEFT) { + textXOffset = width + butPtr->padX - 2; + } else { + imageXOffset = butPtr->textWidth + butPtr->padX; + } + fullWidth = butPtr->textWidth + butPtr->padX + width; + fullHeight = (height > butPtr->textHeight ? height : + butPtr->textHeight); + textYOffset = (fullHeight - butPtr->textHeight)/2; + imageYOffset = (fullHeight - height)/2; + break; + case COMPOUND_CENTER: + /* + * Image and text are superimposed + */ + + fullWidth = (width > butPtr->textWidth ? width : butPtr->textWidth); + fullHeight = (height > butPtr->textHeight ? height : + butPtr->textHeight); + textXOffset = (fullWidth - butPtr->textWidth) / 2; + imageXOffset = (fullWidth - width) / 2; + textYOffset = (fullHeight - butPtr->textHeight) / 2; + imageYOffset = (fullHeight - height) / 2; + break; + case COMPOUND_NONE: + break; + } + + TkComputeAnchor(butPtr->anchor, tkwin, + butPtr->padX + butPtr->inset, butPtr->padY + butPtr->inset, + fullWidth, fullHeight, &x, &y); + imageXOffset = LEFT_INSET; + imageYOffset += y; + textYOffset -= 1; + + if (butPtr->image != NULL) { + Tk_RedrawImage(butPtr->image, 0, 0, width, + height, pixmap, imageXOffset, imageYOffset); + } else { + XSetClipOrigin(butPtr->display, dpPtr->gc, + imageXOffset, imageYOffset); + XCopyPlane(butPtr->display, butPtr->bitmap, pixmap, dpPtr->gc, + 0, 0, (unsigned int) width, (unsigned int) height, + imageXOffset, imageYOffset, 1); + XSetClipOrigin(butPtr->display, dpPtr->gc, 0, 0); + } + + Tk_DrawTextLayout(butPtr->display, pixmap, + dpPtr->gc, butPtr->textLayout, + x + textXOffset, y + textYOffset, 0, -1); + Tk_UnderlineTextLayout(butPtr->display, pixmap, dpPtr->gc, + butPtr->textLayout, x + textXOffset, y + textYOffset, + butPtr->underline); + } else { + int x, y; + + if (haveImage) { + TkComputeAnchor(butPtr->anchor, tkwin, + butPtr->padX + butPtr->borderWidth, + butPtr->padY + butPtr->borderWidth, + width, height, &x, &y); + imageXOffset = LEFT_INSET; + imageYOffset += y; + if (butPtr->image != NULL) { + Tk_RedrawImage(butPtr->image, 0, 0, width, height, + pixmap, imageXOffset, imageYOffset); + } else { + XSetClipOrigin(butPtr->display, dpPtr->gc, x, y); + XCopyPlane(butPtr->display, butPtr->bitmap, + pixmap, dpPtr->gc, + 0, 0, (unsigned int) width, + (unsigned int) height, + imageXOffset, imageYOffset, 1); + XSetClipOrigin(butPtr->display, dpPtr->gc, 0, 0); + } + } else { + textXOffset = LEFT_INSET; + TkComputeAnchor(butPtr->anchor, tkwin, butPtr->padX, butPtr->padY, + butPtr->textWidth, butPtr->textHeight, &x, &y); + Tk_DrawTextLayout(butPtr->display, pixmap, dpPtr->gc, + butPtr->textLayout, textXOffset, y, 0, -1); + y += butPtr->textHeight/2; + } + } +} + +/* + *-------------------------------------------------------------- + * + * TkMacOSXDrawMenuButton -- + * + * This function draws the tk menubutton using Mac controls. In + * addition, this code may apply custom colors passed in the + * TkMenubutton. + * + * Results: + * None. + * + * Side effects: + * None. + * + *-------------------------------------------------------------- + */ + +static void +TkMacOSXDrawMenuButton( + MacMenuButton *mbPtr, /* Mac menubutton. */ + GC gc, /* The GC we are drawing into - needed for the bevel + * button */ + Pixmap pixmap) /* The pixmap we are drawing into - needed for the + * bevel button */ +{ + TkMenuButton *butPtr = (TkMenuButton *) mbPtr; + TkWindow *winPtr = (TkWindow *) butPtr->tkwin; + HIRect cntrRect; + TkMacOSXDrawingContext dc; + DrawParams *dpPtr = &mbPtr->drawParams; + int useNewerHITools = 1; + + TkMacOSXComputeMenuButtonParams(butPtr, &mbPtr->btnkind, &mbPtr->drawinfo); + + cntrRect = CGRectMake(winPtr->privatePtr->xOff, winPtr->privatePtr->yOff, + Tk_Width(butPtr->tkwin), Tk_Height(butPtr->tkwin)); + + if (useNewerHITools == 1) { + HIRect contHIRec; + static HIThemeButtonDrawInfo hiinfo; + + MenuButtonBackgroundDrawCB(mbPtr, 32, true); + if (!TkMacOSXSetupDrawingContext(pixmap, dpPtr->gc, 1, &dc)) { + return; + } + + hiinfo.version = 0; + hiinfo.state = mbPtr->drawinfo.state; + hiinfo.kind = mbPtr->btnkind; + hiinfo.value = mbPtr->drawinfo.value; + hiinfo.adornment = mbPtr->drawinfo.adornment; + hiinfo.animation.time.current = CFAbsoluteTimeGetCurrent(); + if (hiinfo.animation.time.start == 0) { + hiinfo.animation.time.start = hiinfo.animation.time.current; + } + + /* + * To avoid menubuttons with white text on a white background, we + * always set the state to inactive in Dark Mode. It isn't perfect but + * it is usable. Using a ttk::menubutton would be a better choice, + * however. + */ + + if (TkMacOSXInDarkMode(butPtr->tkwin)) { + hiinfo.state = kThemeStateInactive; + } + + HIThemeDrawButton(&cntrRect, &hiinfo, dc.context, + kHIThemeOrientationNormal, &contHIRec); + TkMacOSXRestoreDrawingContext(&dc); + MenuButtonContentDrawCB(mbPtr->btnkind, &mbPtr->drawinfo, + mbPtr, 32, true); + } else { + if (!TkMacOSXSetupDrawingContext(pixmap, dpPtr->gc, 1, &dc)) { + return; + } + TkMacOSXRestoreDrawingContext(&dc); + } + mbPtr->lastdrawinfo = mbPtr->drawinfo; +} + +/* + *-------------------------------------------------------------- + * + * MenuButtonBackgroundDrawCB -- + * + * This function draws the background that lies under checkboxes and + * radiobuttons. + * + * Results: + * None. + * + * Side effects: + * The background gets updated to the current color. + * + *-------------------------------------------------------------- + */ + +static void +MenuButtonBackgroundDrawCB ( + MacMenuButton *ptr, + SInt16 depth, + Boolean isColorDev) +{ + TkMenuButton* butPtr = (TkMenuButton *) ptr; + Tk_Window tkwin = butPtr->tkwin; + Pixmap pixmap; + + if (tkwin == NULL || !Tk_IsMapped(tkwin)) { + return; + } + pixmap = (Pixmap) Tk_WindowId(tkwin); + Tk_Fill3DRectangle(tkwin, pixmap, butPtr->normalBorder, 0, 0, + Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT); +} + +/* + *-------------------------------------------------------------- + * + * MenuButtonContentDrawCB -- + * + * This function draws the label and image for the button. + * + * Results: + * None. + * + * Side effects: + * The content of the button gets updated. + * + *-------------------------------------------------------------- + */ + +static void +MenuButtonContentDrawCB ( + ThemeButtonKind kind, + const HIThemeButtonDrawInfo *drawinfo, + MacMenuButton *ptr, + SInt16 depth, + Boolean isColorDev) +{ + TkMenuButton *butPtr = (TkMenuButton *) ptr; + Tk_Window tkwin = butPtr->tkwin; + + if (tkwin == NULL || !Tk_IsMapped(tkwin)) { + return; + } + DrawMenuButtonImageAndText(butPtr); +} + +/* + *-------------------------------------------------------------- + * + * MenuButtonEventProc -- + * + * This procedure is invoked by the Tk dispatcher for various events on + * buttons. + * + * Results: + * None. + * + * Side effects: + * When it gets exposed, it is redisplayed. + * + *-------------------------------------------------------------- + */ + +static void +MenuButtonEventProc( + ClientData clientData, /* Information about window. */ + XEvent *eventPtr) /* Information about event. */ +{ + TkMenuButton *buttonPtr = clientData; + MacMenuButton *mbPtr = clientData; + + if (eventPtr->type == ActivateNotify + || eventPtr->type == DeactivateNotify) { + if ((buttonPtr->tkwin == NULL) || (!Tk_IsMapped(buttonPtr->tkwin))) { + return; + } + if (eventPtr->type == ActivateNotify) { + mbPtr->flags |= ACTIVE; + } else { + mbPtr->flags &= ~ACTIVE; + } + if ((buttonPtr->flags & REDRAW_PENDING) == 0) { + Tcl_DoWhenIdle(TkpDisplayMenuButton, (ClientData) buttonPtr); + buttonPtr->flags |= REDRAW_PENDING; + } + } +} + +/* + *---------------------------------------------------------------------- + * + * TkMacOSXComputeMenuButtonParams -- + * + * This procedure computes the various parameters used when creating a + * Carbon Appearance control. These are determined by the various Tk + * button parameters + * + * Results: + * None. + * + * Side effects: + * Sets the btnkind and drawinfo parameters + * + *---------------------------------------------------------------------- + */ + +static void +TkMacOSXComputeMenuButtonParams( + TkMenuButton *butPtr, + ThemeButtonKind *btnkind, + HIThemeButtonDrawInfo *drawinfo) +{ + MacMenuButton *mbPtr = (MacMenuButton *) butPtr; + + if (butPtr->image || butPtr->bitmap || butPtr->text) { + /* TODO: allow for Small and Mini menubuttons. */ + *btnkind = kThemePopupButton; + } else { /* This should never happen. */ + *btnkind = kThemeArrowButton; + } + + drawinfo->value = kThemeButtonOff; + + if ((mbPtr->flags & FIRST_DRAW) != 0) { + mbPtr->flags &= ~FIRST_DRAW; + if (Tk_MacOSXIsAppInFront()) { + mbPtr->flags |= ACTIVE; + } + } + + drawinfo->state = kThemeStateInactive; + if ((mbPtr->flags & ACTIVE) == 0) { + if (butPtr->state == STATE_DISABLED) { + drawinfo->state = kThemeStateUnavailableInactive; + } else { + drawinfo->state = kThemeStateInactive; + } + } else if (butPtr->state == STATE_DISABLED) { + drawinfo->state = kThemeStateUnavailable; + } else { + drawinfo->state = kThemeStateActive; + } + + drawinfo->adornment = kThemeAdornmentNone; + if (butPtr->highlightWidth >= 3) { + if ((butPtr->flags & GOT_FOCUS)) { + drawinfo->adornment |= kThemeAdornmentFocus; + } + } + drawinfo->adornment |= kThemeAdornmentArrowDoubleArrow; +} + +/* + *---------------------------------------------------------------------- + * + * TkMacOSXComputeMenuButtonDrawParams -- + * + * This procedure selects an appropriate drawing context for drawing a + * menubutton. + * + * Results: + * None. + * + * Side effects: + * Sets the button draw parameters. + * + *---------------------------------------------------------------------- + */ + +static void +TkMacOSXComputeMenuButtonDrawParams( + TkMenuButton *butPtr, + DrawParams *dpPtr) +{ + dpPtr->hasImageOrBitmap = + ((butPtr->image != NULL) || (butPtr->bitmap != None)); + dpPtr->border = butPtr->normalBorder; + if ((butPtr->state == STATE_DISABLED) && (butPtr->disabledFg != NULL)) { + dpPtr->gc = butPtr->disabledGC; + } else if (butPtr->state == STATE_ACTIVE) { + dpPtr->gc = butPtr->activeTextGC; + dpPtr->border = butPtr->activeBorder; + } else { + dpPtr->gc = butPtr->normalTextGC; + } +} + +/* + * Local Variables: + * mode: objc + * c-basic-offset: 4 + * fill-column: 79 + * coding: utf-8 + * End: + */ |