/*
* tkMenuDraw.c --
*
* This module implements the platform-independent drawing and geometry
* calculations of menu widgets.
*
* Copyright (c) 1996-1997 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.
*
* RCS: @(#) $Id: tkMenuDraw.c,v 1.9 2007/09/07 00:34:53 dgp Exp $
*/
#include "tkInt.h"
#include "tkMenu.h"
/*
* Forward declarations for functions defined later in this file:
*/
static void AdjustMenuCoords(TkMenu *menuPtr, TkMenuEntry *mePtr,
int *xPtr, int *yPtr);
static void ComputeMenuGeometry(ClientData clientData);
static void DisplayMenu(ClientData clientData);
/*
*----------------------------------------------------------------------
*
* TkMenuInitializeDrawingFields --
*
* Fills in drawing fields of a new menu. Called when new menu is created
* by MenuCmd.
*
* Results:
* None.
*
* Side effects:
* menuPtr fields are initialized.
*
*----------------------------------------------------------------------
*/
void
TkMenuInitializeDrawingFields(
TkMenu *menuPtr) /* The menu we are initializing. */
{
menuPtr->textGC = None;
menuPtr->gray = None;
menuPtr->disabledGC = None;
menuPtr->activeGC = None;
menuPtr->indicatorGC = None;
menuPtr->disabledImageGC = None;
menuPtr->totalWidth = menuPtr->totalHeight = 0;
}
/*
*----------------------------------------------------------------------
*
* TkMenuInitializeEntryDrawingFields --
*
* Fills in drawing fields of a new menu entry. Called when an entry is
* created.
*
* Results:
* None.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
void
TkMenuInitializeEntryDrawingFields(
TkMenuEntry *mePtr) /* The menu we are initializing. */
{
mePtr->width = 0;
mePtr->height = 0;
mePtr->x = 0;
mePtr->y = 0;
mePtr->indicatorSpace = 0;
mePtr->labelWidth = 0;
mePtr->textGC = None;
mePtr->activeGC = None;
mePtr->disabledGC = None;
mePtr->indicatorGC = None;
}
/*
*----------------------------------------------------------------------
*
* TkMenuFreeDrawOptions --
*
* Frees up any structures allocated for the drawing of a menu. Called
* when menu is deleted.
*
* Results:
* None.
*
* Side effects:
* Storage is released.
*
*----------------------------------------------------------------------
*/
void
TkMenuFreeDrawOptions(
TkMenu *menuPtr)
{
if (menuPtr->textGC != None) {
Tk_FreeGC(menuPtr->display, menuPtr->textGC);
}
if (menuPtr->disabledImageGC != None) {
Tk_FreeGC(menuPtr->display, menuPtr->disabledImageGC);
}
if (menuPtr->gray != None) {
Tk_FreeBitmap(menuPtr->display, menuPtr->gray);
}
if (menuPtr->disabledGC != None) {
Tk_FreeGC(menuPtr->display, menuPtr->disabledGC);
}
if (menuPtr->activeGC != None) {
Tk_FreeGC(menuPtr->display, menuPtr->activeGC);
}
if (menuPtr->indicatorGC != None) {
Tk_FreeGC(menuPtr->display, menuPtr->indicatorGC);
}
}
/*
*----------------------------------------------------------------------
*
* TkMenuEntryFreeDrawOptions --
*
* Frees up drawing structures for a menu entry. Called when menu entry
* is freed.
*
* RESULTS:
* None.
*
* Side effects:
* Storage is freed.
*
*----------------------------------------------------------------------
*/
void
TkMenuEntryFreeDrawOptions(
TkMenuEntry *mePtr)
{
if (mePtr->textGC != None) {
Tk_FreeGC(mePtr->menuPtr->display, mePtr->textGC);
}
if (mePtr->disabledGC != None) {
Tk_FreeGC(mePtr->menuPtr->display, mePtr->disabledGC);
}
if (mePtr->activeGC != None) {
Tk_FreeGC(mePtr->menuPtr->display, mePtr->activeGC);
}
if (mePtr->indicatorGC != None) {
Tk_FreeGC(mePtr->menuPtr->display, mePtr->indicatorGC);
}
}
/*
*----------------------------------------------------------------------
*
* TkMenuConfigureDrawOptions --
*
* Sets the menu's drawing attributes in preparation for drawing the
* menu.
*
* RESULTS:
* None.
*
* Side effects:
* Storage is allocated.
*
*----------------------------------------------------------------------
*/
void
TkMenuConfigureDrawOptions(
TkMenu *menuPtr) /* The menu we are configuring. */
{
XGCValues gcValues;
GC newGC;
unsigned long mask;
Tk_3DBorder border, activeBorder;
Tk_Font tkfont;
XColor *fg, *activeFg, *indicatorFg;
/*
* 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.
*/
border = Tk_Get3DBorderFromObj(menuPtr->tkwin, menuPtr->borderPtr);
Tk_SetBackgroundFromBorder(menuPtr->tkwin, border);
tkfont = Tk_GetFontFromObj(menuPtr->tkwin, menuPtr->fontPtr);
gcValues.font = Tk_FontId(tkfont);
fg = Tk_GetColorFromObj(menuPtr->tkwin, menuPtr->fgPtr);
gcValues.foreground = fg->pixel;
gcValues.background = Tk_3DBorderColor(border)->pixel;
newGC = Tk_GetGC(menuPtr->tkwin, GCForeground|GCBackground|GCFont,
&gcValues);
if (menuPtr->textGC != None) {
Tk_FreeGC(menuPtr->display, menuPtr->textGC);
}
menuPtr->textGC = newGC;
gcValues.font = Tk_FontId(tkfont);
gcValues.background = Tk_3DBorderColor(border)->pixel;
if (menuPtr->disabledFgPtr != NULL) {
XColor *disabledFg;
disabledFg = Tk_GetColorFromObj(menuPtr->tkwin,
menuPtr->disabledFgPtr);
gcValues.foreground = disabledFg->pixel;
mask = GCForeground|GCBackground|GCFont;
} else {
gcValues.foreground = gcValues.background;
mask = GCForeground;
if (menuPtr->gray == None) {
menuPtr->gray = Tk_GetBitmap(menuPtr->interp, menuPtr->tkwin,
"gray50");
}
if (menuPtr->gray != None) {
gcValues.fill_style = FillStippled;
gcValues.stipple = menuPtr->gray;
mask = GCForeground|GCFillStyle|GCStipple;
}
}
newGC = Tk_GetGC(menuPtr->tkwin, mask, &gcValues);
if (menuPtr->disabledGC != None) {
Tk_FreeGC(menuPtr->display, menuPtr->disabledGC);
}
menuPtr->disabledGC = newGC;
gcValues.foreground = Tk_3DBorderColor(border)->pixel;
if (menuPtr->gray == None) {
menuPtr->gray = Tk_GetBitmap(menuPtr->interp, menuPtr->tkwin,
"gray50");
}
if (menuPtr->gray != None) {
gcValues.fill_style = FillStippled;
gcValues.stipple = menuPtr->gray;
newGC = Tk_GetGC(menuPtr->tkwin,
GCForeground|GCFillStyle|GCStipple, &gcValues);
}
if (menuPtr->disabledImageGC != None) {
Tk_FreeGC(menuPtr->display, menuPtr->disabledImageGC);
}
menuPtr->disabledImageGC = newGC;
gcValues.font = Tk_FontId(tkfont);
activeFg = Tk_GetColorFromObj(menuPtr->tkwin, menuPtr->activeFgPtr);
gcValues.foreground = activeFg->pixel;
activeBorder = Tk_Get3DBorderFromObj(menuPtr->tkwin,
menuPtr->activeBorderPtr);
gcValues.background = Tk_3DBorderColor(activeBorder)->pixel;
newGC = Tk_GetGC(menuPtr->tkwin, GCForeground|GCBackground|GCFont,
&gcValues);
if (menuPtr->activeGC != None) {
Tk_FreeGC(menuPtr->display, menuPtr->activeGC);
}
menuPtr->activeGC = newGC;
indicatorFg = Tk_GetColorFromObj(menuPtr->tkwin,
menuPtr->indicatorFgPtr);
gcValues.foreground = indicatorFg->pixel;
gcValues.background = Tk_3DBorderColor(border)->pixel;
newGC = Tk_GetGC(menuPtr->tkwin, GCForeground|GCBackground|GCFont,
&gcValues);
if (menuPtr->indicatorGC != None) {
Tk_FreeGC(menuPtr->display, menuPtr->indicatorGC);
}
menuPtr->indicatorGC = newGC;
}
/*
*----------------------------------------------------------------------
*
* TkMenuConfigureEntryDrawOptions --
*
* Calculates any entry-specific draw options for the given menu entry.
*
* Results:
* Returns a standard Tcl error.
*
* Side effects:
* Storage may be allocated.
*
*----------------------------------------------------------------------
*/
int
TkMenuConfigureEntryDrawOptions(
TkMenuEntry *mePtr,
int index)
{
XGCValues gcValues;
GC newGC, newActiveGC, newDisabledGC, newIndicatorGC;
unsigned long mask;
Tk_Font tkfont;
TkMenu *menuPtr = mePtr->menuPtr;
tkfont = Tk_GetFontFromObj(menuPtr->tkwin,
(mePtr->fontPtr != NULL) ? mePtr->fontPtr : menuPtr->fontPtr);
if (mePtr->state == ENTRY_ACTIVE) {
if (index != menuPtr->active) {
TkActivateMenuEntry(menuPtr, index);
}
} else {
if (index == menuPtr->active) {
TkActivateMenuEntry(menuPtr, -1);
}
}
if ((mePtr->fontPtr != NULL)
|| (mePtr->borderPtr != NULL)
|| (mePtr->fgPtr != NULL)
|| (mePtr->activeBorderPtr != NULL)
|| (mePtr->activeFgPtr != NULL)
|| (mePtr->indicatorFgPtr != NULL)) {
XColor *fg, *indicatorFg, *activeFg;
Tk_3DBorder border, activeBorder;
fg = Tk_GetColorFromObj(menuPtr->tkwin, (mePtr->fgPtr != NULL)
? mePtr->fgPtr : menuPtr->fgPtr);
gcValues.foreground = fg->pixel;
border = Tk_Get3DBorderFromObj(menuPtr->tkwin,
(mePtr->borderPtr != NULL) ? mePtr->borderPtr
: menuPtr->borderPtr);
gcValues.background = Tk_3DBorderColor(border)->pixel;
gcValues.font = Tk_FontId(tkfont);
/*
* Note: disable GraphicsExpose events; we know there won't be
* obscured areas when copying from an off-screen pixmap to the screen
* and this gets rid of unnecessary events.
*/
gcValues.graphics_exposures = False;
newGC = Tk_GetGC(menuPtr->tkwin,
GCForeground|GCBackground|GCFont|GCGraphicsExposures,
&gcValues);
indicatorFg = Tk_GetColorFromObj(menuPtr->tkwin,
(mePtr->indicatorFgPtr != NULL) ? mePtr->indicatorFgPtr
: menuPtr->indicatorFgPtr);
gcValues.foreground = indicatorFg->pixel;
newIndicatorGC = Tk_GetGC(menuPtr->tkwin,
GCForeground|GCBackground|GCGraphicsExposures,
&gcValues);
if ((menuPtr->disabledFgPtr != NULL) || (mePtr->image != NULL)) {
XColor *disabledFg;
disabledFg = Tk_GetColorFromObj(menuPtr->tkwin,
menuPtr->disabledFgPtr);
gcValues.foreground = disabledFg->pixel;
mask = GCForeground|GCBackground|GCFont|GCGraphicsExposures;
} else {
gcValues.foreground = gcValues.background;
gcValues.fill_style = FillStippled;
gcValues.stipple = menuPtr->gray;
mask = GCForeground|GCFillStyle|GCStipple;
}
newDisabledGC = Tk_GetGC(menuPtr->tkwin, mask, &gcValues);
activeFg = Tk_GetColorFromObj(menuPtr->tkwin,
(mePtr->activeFgPtr != NULL) ? mePtr->activeFgPtr
: menuPtr->activeFgPtr);
activeBorder = Tk_Get3DBorderFromObj(menuPtr->tkwin,
(mePtr->activeBorderPtr != NULL) ? mePtr->activeBorderPtr
: menuPtr->activeBorderPtr);
gcValues.foreground = activeFg->pixel;
gcValues.background = Tk_3DBorderColor(activeBorder)->pixel;
newActiveGC = Tk_GetGC(menuPtr->tkwin,
GCForeground|GCBackground|GCFont|GCGraphicsExposures,
&gcValues);
} else {
newGC = None;
newActiveGC = None;
newDisabledGC = None;
newIndicatorGC = None;
}
if (mePtr->textGC != None) {
Tk_FreeGC(menuPtr->display, mePtr->textGC);
}
mePtr->textGC = newGC;
if (mePtr->activeGC != None) {
Tk_FreeGC(menuPtr->display, mePtr->activeGC);
}
mePtr->activeGC = newActiveGC;
if (mePtr->disabledGC != None) {
Tk_FreeGC(menuPtr->display, mePtr->disabledGC);
}
mePtr->disabledGC = newDisabledGC;
if (mePtr->indicatorGC != None) {
Tk_FreeGC(menuPtr->display, mePtr->indicatorGC);
}
mePtr->indicatorGC = newIndicatorGC;
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* TkEventuallyRecomputeMenu --
*
* Tells Tcl to redo the geometry because this menu has changed.
*
* Results:
* None.
*
* Side effects:
* Menu geometry is recomputed at idle time, and the menu will be
* redisplayed.
*
*----------------------------------------------------------------------
*/
void
TkEventuallyRecomputeMenu(
TkMenu *menuPtr)
{
if (!(menuPtr->menuFlags & RESIZE_PENDING)) {
menuPtr->menuFlags |= RESIZE_PENDING;
Tcl_DoWhenIdle(ComputeMenuGeometry, (ClientData) menuPtr);
}
}
/*
*----------------------------------------------------------------------
*
* TkRecomputeMenu --
*
* Tells Tcl to redo the geometry because this menu has changed. Does it
* now; removes any ComputeMenuGeometries from the idler.
*
* Results:
* None.
*
* Side effects:
* Menu geometry is immediately reconfigured.
*
*----------------------------------------------------------------------
*/
void
TkRecomputeMenu(
TkMenu *menuPtr)
{
if (menuPtr->menuFlags & RESIZE_PENDING) {
Tcl_CancelIdleCall(ComputeMenuGeometry, (ClientData) menuPtr);
ComputeMenuGeometry((ClientData) menuPtr);
}
}
/*
*----------------------------------------------------------------------
*
* TkEventuallyRedrawMenu --
*
* Arrange for an entry of a menu, or the whole menu, to be redisplayed
* at some point in the future.
*
* Results:
* None.
*
* Side effects:
* A when-idle hander is scheduled to do the redisplay, if there isn't
* one already scheduled.
*
*----------------------------------------------------------------------
*/
void
TkEventuallyRedrawMenu(
register TkMenu *menuPtr, /* Information about menu to redraw. */
register TkMenuEntry *mePtr)/* Entry to redraw. NULL means redraw all the
* entries in the menu. */
{
int i;
if (menuPtr->tkwin == NULL) {
return;
}
if (mePtr != NULL) {
mePtr->entryFlags |= ENTRY_NEEDS_REDISPLAY;
} else {
for (i = 0; i < menuPtr->numEntries; i++) {
menuPtr->entries[i]->entryFlags |= ENTRY_NEEDS_REDISPLAY;
}
}
if (!Tk_IsMapped(menuPtr->tkwin)
|| (menuPtr->menuFlags & REDRAW_PENDING)) {
return;
}
Tcl_DoWhenIdle(DisplayMenu, (ClientData) menuPtr);
menuPtr->menuFlags |= REDRAW_PENDING;
}
/*
*--------------------------------------------------------------
*
* ComputeMenuGeometry --
*
* This function is invoked to recompute the size and layout of a menu.
* It is called as a when-idle handler so that it only gets done once,
* even if a group of changes is made to the menu.
*
* Results:
* None.
*
* Side effects:
* Fields of menu entries are changed to reflect their current positions,
* and the size of the menu window itself may be changed.
*
*--------------------------------------------------------------
*/
static void
ComputeMenuGeometry(
ClientData clientData) /* Structure describing menu. */
{
TkMenu *menuPtr = (TkMenu *) clientData;
if (menuPtr->tkwin == NULL) {
return;
}
if (menuPtr->menuType == MENUBAR) {
TkpComputeMenubarGeometry(menuPtr);
} else {
TkpComputeStandardMenuGeometry(menuPtr);
}
if ((menuPtr->totalWidth != Tk_ReqWidth(menuPtr->tkwin)) ||
(menuPtr->totalHeight != Tk_ReqHeight(menuPtr->tkwin))) {
Tk_GeometryRequest(menuPtr->tkwin, menuPtr->totalWidth,
menuPtr->totalHeight);
}
/*
* Must always force a redisplay here if the window is mapped (even if the
* size didn't change, something else might have changed in the menu, such
* as a label or accelerator). The resize will force a redisplay above.
*/
TkEventuallyRedrawMenu(menuPtr, NULL);
menuPtr->menuFlags &= ~RESIZE_PENDING;
}
/*
*----------------------------------------------------------------------
*
* TkMenuSelectImageProc --
*
* This function 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 menu entry when it is selected.
*
* Results:
* None.
*
* Side effects:
* Arranges for the menu to get redisplayed.
*
*----------------------------------------------------------------------
*/
void
TkMenuSelectImageProc(
ClientData clientData, /* Pointer to widget record. */
int x, int y, /* Upper left pixel (within image) that must
* be redisplayed. */
int width, int height, /* Dimensions of area to redisplay (may be
* <=0). */
int imgWidth, int imgHeight)/* New dimensions of image. */
{
register TkMenuEntry *mePtr = (TkMenuEntry *) clientData;
if ((mePtr->entryFlags & ENTRY_SELECTED)
&& !(mePtr->menuPtr->menuFlags & REDRAW_PENDING)) {
mePtr->menuPtr->menuFlags |= REDRAW_PENDING;
Tcl_DoWhenIdle(DisplayMenu, (ClientData) mePtr->menuPtr);
}
}
/*
*----------------------------------------------------------------------
*
* DisplayMenu --
*
* This function is invoked to display a menu widget.
*
* Results:
* None.
*
* Side effects:
* Commands are output to X to display the menu in its current mode.
*
*----------------------------------------------------------------------
*/
static void
DisplayMenu(
ClientData clientData) /* Information about widget. */
{
register TkMenu *menuPtr = (TkMenu *) clientData;
register TkMenuEntry *mePtr;
register Tk_Window tkwin = menuPtr->tkwin;
int index, strictMotif;
Tk_Font tkfont;
Tk_FontMetrics menuMetrics;
int width;
int borderWidth;
Tk_3DBorder border;
int activeBorderWidth;
int relief;
menuPtr->menuFlags &= ~REDRAW_PENDING;
if ((menuPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) {
return;
}
Tk_GetPixelsFromObj(NULL, menuPtr->tkwin, menuPtr->borderWidthPtr,
&borderWidth);
border = Tk_Get3DBorderFromObj(menuPtr->tkwin, menuPtr->borderPtr);
Tk_GetPixelsFromObj(NULL, menuPtr->tkwin,
menuPtr->activeBorderWidthPtr, &activeBorderWidth);
if (menuPtr->menuType == MENUBAR) {
Tk_Fill3DRectangle(tkwin, Tk_WindowId(tkwin), border, borderWidth,
borderWidth, Tk_Width(tkwin) - 2 * borderWidth,
Tk_Height(tkwin) - 2 * borderWidth, 0, TK_RELIEF_FLAT);
}
strictMotif = Tk_StrictMotif(menuPtr->tkwin);
/*
* See note in ComputeMenuGeometry. We don't want to be doing font metrics
* all of the time.
*/
tkfont = Tk_GetFontFromObj(menuPtr->tkwin, menuPtr->fontPtr);
Tk_GetFontMetrics(tkfont, &menuMetrics);
/*
* Loop through all of the entries, drawing them one at a time.
*/
for (index = 0; index < menuPtr->numEntries; index++) {
mePtr = menuPtr->entries[index];
if (menuPtr->menuType != MENUBAR) {
if (!(mePtr->entryFlags & ENTRY_NEEDS_REDISPLAY)) {
continue;
}
}
mePtr->entryFlags &= ~ENTRY_NEEDS_REDISPLAY;
if (menuPtr->menuType == MENUBAR) {
width = mePtr->width;
} else {
if (mePtr->entryFlags & ENTRY_LAST_COLUMN) {
width = Tk_Width(menuPtr->tkwin) - mePtr->x
- activeBorderWidth;
} else {
width = mePtr->width + borderWidth;
}
}
TkpDrawMenuEntry(mePtr, Tk_WindowId(menuPtr->tkwin), tkfont,
&menuMetrics, mePtr->x, mePtr->y, width,
mePtr->height, strictMotif, 1);
if ((index > 0) && (menuPtr->menuType != MENUBAR)
&& mePtr->columnBreak) {
mePtr = menuPtr->entries[index - 1];
Tk_Fill3DRectangle(tkwin, Tk_WindowId(tkwin), border,
mePtr->x, mePtr->y + mePtr->height,
mePtr->width,
Tk_Height(tkwin) - mePtr->y - mePtr->height -
activeBorderWidth, 0,
TK_RELIEF_FLAT);
}
}
if (menuPtr->menuType != MENUBAR) {
int x, y, height;
if (menuPtr->numEntries == 0) {
x = y = borderWidth;
width = Tk_Width(tkwin) - 2 * activeBorderWidth;
height = Tk_Height(tkwin) - 2 * activeBorderWidth;
} else {
mePtr = menuPtr->entries[menuPtr->numEntries - 1];
Tk_Fill3DRectangle(tkwin, Tk_WindowId(tkwin),
border, mePtr->x, mePtr->y + mePtr->height, mePtr->width,
Tk_Height(tkwin) - mePtr->y - mePtr->height
- activeBorderWidth, 0,
TK_RELIEF_FLAT);
x = mePtr->x + mePtr->width;
y = mePtr->y + mePtr->height;
width = Tk_Width(tkwin) - x - activeBorderWidth;
height = Tk_Height(tkwin) - y - activeBorderWidth;
}
Tk_Fill3DRectangle(tkwin, Tk_WindowId(tkwin), border, x, y,
width, height, 0, TK_RELIEF_FLAT);
}
Tk_GetReliefFromObj(NULL, menuPtr->reliefPtr, &relief);
Tk_Draw3DRectangle(menuPtr->tkwin, Tk_WindowId(tkwin),
border, 0, 0, Tk_Width(tkwin), Tk_Height(tkwin), borderWidth,
relief);
}
/*
*--------------------------------------------------------------
*
* TkMenuEventProc --
*
* This function is invoked by the Tk dispatcher for various events on
* menus.
*
* Results:
* None.
*
* Side effects:
* When the window gets deleted, internal structures get cleaned up. When
* it gets exposed, it is redisplayed.
*
*--------------------------------------------------------------
*/
void
TkMenuEventProc(
ClientData clientData, /* Information about window. */
XEvent *eventPtr) /* Information about event. */
{
TkMenu *menuPtr = (TkMenu *) clientData;
if ((eventPtr->type == Expose) && (eventPtr->xexpose.count == 0)) {
TkEventuallyRedrawMenu(menuPtr, NULL);
} else if (eventPtr->type == ConfigureNotify) {
TkEventuallyRecomputeMenu(menuPtr);
TkEventuallyRedrawMenu(menuPtr, NULL);
} else if (eventPtr->type == ActivateNotify) {
if (menuPtr->menuType == TEAROFF_MENU) {
TkpSetMainMenubar(menuPtr->interp, menuPtr->tkwin, NULL);
}
} else if (eventPtr->type == DestroyNotify) {
if (menuPtr->tkwin != NULL) {
if (!(menuPtr->menuFlags & MENU_DELETION_PENDING)) {
TkDestroyMenu(menuPtr);
}
menuPtr->tkwin = NULL;
}
if (menuPtr->menuFlags & MENU_WIN_DESTRUCTION_PENDING) {
return;
}
menuPtr->menuFlags |= MENU_WIN_DESTRUCTION_PENDING;
if (menuPtr->widgetCmd != NULL) {
Tcl_DeleteCommandFromToken(menuPtr->interp, menuPtr->widgetCmd);
menuPtr->widgetCmd = NULL;
}
if (menuPtr->menuFlags & REDRAW_PENDING) {
Tcl_CancelIdleCall(DisplayMenu, (ClientData) menuPtr);
menuPtr->menuFlags &= ~REDRAW_PENDING;
}
if (menuPtr->menuFlags & RESIZE_PENDING) {
Tcl_CancelIdleCall(ComputeMenuGeometry, (ClientData) menuPtr);
menuPtr->menuFlags &= ~RESIZE_PENDING;
}
Tcl_EventuallyFree((ClientData) menuPtr, TCL_DYNAMIC);
}
}
/*
*----------------------------------------------------------------------
*
* TkMenuImageProc --
*
* This function 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 menu entry.
*
* Results:
* None.
*
* Side effects:
* Arranges for the menu to get redisplayed.
*
*----------------------------------------------------------------------
*/
void
TkMenuImageProc(
ClientData clientData, /* Pointer to widget record. */
int x, int y, /* Upper left pixel (within image) that must
* be redisplayed. */
int width, int height, /* Dimensions of area to redisplay (may be
* <=0). */
int imgWidth, int imgHeight)/* New dimensions of image. */
{
register TkMenu *menuPtr = ((TkMenuEntry *)clientData)->menuPtr;
if ((menuPtr->tkwin != NULL) && !(menuPtr->menuFlags & RESIZE_PENDING)) {
menuPtr->menuFlags |= RESIZE_PENDING;
Tcl_DoWhenIdle(ComputeMenuGeometry, (ClientData) menuPtr);
}
}
/*
*----------------------------------------------------------------------
*
* TkPostTearoffMenu --
*
* Posts a menu on the screen. Used to post tearoff menus. On Unix, all
* menus are posted this way. Adjusts the menu's position so that it fits
* on the screen, and maps and raises the menu.
*
* Results:
* Returns a standard Tcl Error.
*
* Side effects:
* The menu is posted.
*
*----------------------------------------------------------------------
*/
int
TkPostTearoffMenu(
Tcl_Interp *interp, /* The interpreter of the menu */
TkMenu *menuPtr, /* The menu we are posting */
int x, int y) /* The root X,Y coordinates where we are
* posting */
{
int vRootX, vRootY, vRootWidth, vRootHeight;
int tmp, result;
TkActivateMenuEntry(menuPtr, -1);
TkRecomputeMenu(menuPtr);
result = TkPostCommand(menuPtr);
if (result != TCL_OK) {
return result;
}
/*
* The post commands could have deleted the menu, which means we are dead
* and should go away.
*/
if (menuPtr->tkwin == NULL) {
return TCL_OK;
}
/*
* Adjust the position of the menu if necessary to keep it visible on the
* screen. There are two special tricks to make this work right:
*
* 1. If a virtual root window manager is being used then the coordinates
* are in the virtual root window of menuPtr's parent; since the menu
* uses override-redirect mode it will be in the *real* root window for
* the screen, so we have to map the coordinates from the virtual root
* (if any) to the real root. Can't get the virtual root from the menu
* itself (it will never be seen by the wm) so use its parent instead
* (it would be better to have an an option that names a window to use
* for this...).
* 2. The menu may not have been mapped yet, so its current size might be
* the default 1x1. To compute how much space it needs, use its
* requested size, not its actual size.
*
* Note that this code assumes square screen regions and all positive
* coordinates. This does not work on a Mac with multiple monitors. But
* then again, Tk has other problems with this.
*/
Tk_GetVRootGeometry(Tk_Parent(menuPtr->tkwin), &vRootX, &vRootY,
&vRootWidth, &vRootHeight);
x += vRootX;
y += vRootY;
tmp = WidthOfScreen(Tk_Screen(menuPtr->tkwin))
- Tk_ReqWidth(menuPtr->tkwin);
if (x > tmp) {
x = tmp;
}
if (x < 0) {
x = 0;
}
tmp = HeightOfScreen(Tk_Screen(menuPtr->tkwin))
- Tk_ReqHeight(menuPtr->tkwin);
if (y > tmp) {
y = tmp;
}
if (y < 0) {
y = 0;
}
Tk_MoveToplevelWindow(menuPtr->tkwin, x, y);
if (!Tk_IsMapped(menuPtr->tkwin)) {
Tk_MapWindow(menuPtr->tkwin);
}
TkWmRestackToplevel((TkWindow *) menuPtr->tkwin, Above, NULL);
return TCL_OK;
}
/*
*--------------------------------------------------------------
*
* TkPostSubmenu --
*
* This function arranges for a particular submenu (i.e. the menu
* corresponding to a given cascade entry) to be posted.
*
* Results:
* A standard Tcl return result. Errors may occur in the Tcl commands
* generated to post and unpost submenus.
*
* Side effects:
* If there is already a submenu posted, it is unposted. The new submenu
* is then posted.
*
*--------------------------------------------------------------
*/
int
TkPostSubmenu(
Tcl_Interp *interp, /* Used for invoking sub-commands and
* reporting errors. */
register TkMenu *menuPtr, /* Information about menu as a whole. */
register TkMenuEntry *mePtr)/* Info about submenu that is to be posted.
* NULL means make sure that no submenu is
* posted. */
{
int result, x, y;
Tcl_Obj *subary[4];
if (mePtr == menuPtr->postedCascade) {
return TCL_OK;
}
if (menuPtr->postedCascade != NULL) {
/*
* Note: when unposting a submenu, we have to redraw the entire parent
* menu. This is because of a combination of the following things:
* (a) the submenu partially overlaps the parent.
* (b) the submenu specifies "save under", which causes the X server
* to make a copy of the information under it when it is posted.
* When the submenu is unposted, the X server copies this data
* back and doesn't generate any Expose events for the parent.
* (c) the parent may have redisplayed itself after the submenu was
* posted, in which case the saved information is no longer
* correct.
* The simplest solution is just force a complete redisplay of the
* parent.
*/
subary[0] = menuPtr->postedCascade->namePtr;
subary[1] = Tcl_NewStringObj("unpost", -1);
Tcl_IncrRefCount(subary[1]);
TkEventuallyRedrawMenu(menuPtr, NULL);
result = Tcl_EvalObjv(interp, 2, subary, 0);
Tcl_DecrRefCount(subary[1]);
menuPtr->postedCascade = NULL;
if (result != TCL_OK) {
return result;
}
}
if ((mePtr != NULL) && (mePtr->namePtr != NULL)
&& Tk_IsMapped(menuPtr->tkwin)) {
/*
* Position the cascade with its upper left corner slightly below and
* to the left of the upper right corner of the menu entry (this is an
* attempt to match Motif behavior).
*
* The menu has to redrawn so that the entry can change relief.
*/
Tk_GetRootCoords(menuPtr->tkwin, &x, &y);
AdjustMenuCoords(menuPtr, mePtr, &x, &y);
subary[0] = mePtr->namePtr;
subary[1] = Tcl_NewStringObj("post", -1);
subary[2] = Tcl_NewIntObj(x);
subary[3] = Tcl_NewIntObj(y);
Tcl_IncrRefCount(subary[1]);
Tcl_IncrRefCount(subary[2]);
Tcl_IncrRefCount(subary[3]);
result = Tcl_EvalObjv(interp, 4, subary, 0);
Tcl_DecrRefCount(subary[1]);
Tcl_DecrRefCount(subary[2]);
Tcl_DecrRefCount(subary[3]);
if (result != TCL_OK) {
return result;
}
menuPtr->postedCascade = mePtr;
TkEventuallyRedrawMenu(menuPtr, mePtr);
}
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* AdjustMenuCoords --
*
* Adjusts the given coordinates down and the left to give a Motif look.
*
* Results:
* None.
*
* Side effects:
* The menu is eventually redrawn if necessary.
*
*----------------------------------------------------------------------
*/
static void
AdjustMenuCoords(
TkMenu *menuPtr,
TkMenuEntry *mePtr,
int *xPtr,
int *yPtr)
{
if (menuPtr->menuType == MENUBAR) {
*xPtr += mePtr->x;
*yPtr += mePtr->y + mePtr->height;
} else {
int borderWidth, activeBorderWidth;
Tk_GetPixelsFromObj(NULL, menuPtr->tkwin, menuPtr->borderWidthPtr,
&borderWidth);
Tk_GetPixelsFromObj(NULL, menuPtr->tkwin,
menuPtr->activeBorderWidthPtr, &activeBorderWidth);
*xPtr += Tk_Width(menuPtr->tkwin) - borderWidth - activeBorderWidth
- 2;
*yPtr += mePtr->y + activeBorderWidth + 2;
}
}
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/