/*
*---------------------------------------------------------------------------
*
* Blt_MakeTransparentWindowExist --
*
* Similar to Tk_MakeWindowExist but instead creates a transparent window
* to block for user events from sibling windows.
*
* Differences from Tk_MakeWindowExist.
*
* 1. This is always a "busy" window. There's never a platform-specific
* class procedure to execute.
*
* 2. The window is transparent and never will have children, so
* colormap information is irrelevant.
*
* Results:
* None.
*
* Side effects:
* When the procedure returns, the internal window associated with tkwin
* is guaranteed to exist. This may require the window's ancestors to be
* created too.
*
*---------------------------------------------------------------------------
*/
void
Blt_MakeTransparentWindowExist(
Tk_Window tkwin, /* Token for window. */
Window parent, /* Parent window. */
int isBusy) /* */
{
TkWindow *winPtr = (TkWindow *) tkwin;
TkWindow *winPtr2;
Tcl_HashEntry *hPtr;
int notUsed;
TkDisplay *dispPtr;
HWND hParent;
int style;
DWORD exStyle;
HWND hWnd;
if (winPtr->window != None) {
return; /* Window already exists. */
}
/* Create a transparent window and put it on top. */
hParent = (HWND) parent;
style = (WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS);
exStyle = (WS_EX_TRANSPARENT | WS_EX_TOPMOST);
#define TK_WIN_CHILD_CLASS_NAME "TkChild"
hWnd = CreateWindowEx(exStyle, TK_WIN_CHILD_CLASS_NAME, NULL, style,
Tk_X(tkwin), Tk_Y(tkwin), Tk_Width(tkwin), Tk_Height(tkwin),
hParent, NULL, (HINSTANCE)Tk_GetHINSTANCE(), NULL);
winPtr->window = Tk_AttachHWND(tkwin, hWnd);
dispPtr = winPtr->dispPtr;
hPtr = Tcl_CreateHashEntry(&dispPtr->winTable, (char *)winPtr->window,
¬Used);
Tcl_SetHashValue(hPtr, winPtr);
winPtr->dirtyAtts = 0;
winPtr->dirtyChanges = 0;
#ifdef TK_USE_INPUT_METHODS
winPtr->inputContext = NULL;
#endif /* TK_USE_INPUT_METHODS */
if (!(winPtr->flags & TK_TOP_LEVEL)) {
/*
* If any siblings higher up in the stacking order have already been
* created then move this window to its rightful position in the
* stacking order.
*
* NOTE: this code ignores any changes anyone might have made to the
* sibling and stack_mode field of the window's attributes, so it
* really isn't safe for these to be manipulated except by calling
* Tk_RestackWindow.
*/
for (winPtr2 = winPtr->nextPtr; winPtr2 != NULL;
winPtr2 = winPtr2->nextPtr) {
if ((winPtr2->window != None) && !(winPtr2->flags & TK_TOP_LEVEL)) {
XWindowChanges changes;
changes.sibling = winPtr2->window;
changes.stack_mode = Below;
XConfigureWindow(winPtr->display, winPtr->window,
CWSibling | CWStackMode, &changes);
break;
}
}
}
/*
* Issue a ConfigureNotify event if there were deferred configuration
* changes (but skip it if the window is being deleted; the
* ConfigureNotify event could cause problems if we're being called from
* Tk_DestroyWindow under some conditions).
*/
if ((winPtr->flags & TK_NEED_CONFIG_NOTIFY)
&& !(winPtr->flags & TK_ALREADY_DEAD)) {
winPtr->flags &= ~TK_NEED_CONFIG_NOTIFY;
DoConfigureNotify((Tk_FakeWin *)tkwin);
}
}
static void
MakeTransparentWindowExist(
Tk_Window tkwin, /* Token for window. */
Window parent) /* Parent window. */
{
TkWindow *winPtr = (TkWindow *) tkwin;
Tcl_HashEntry *hPtr;
int notUsed;
TkDisplay *dispPtr;
if (winPtr->window != None) {
return; /* Window already exists. */
}
/*
* Create a transparent window and put it on top.
*/
TkpMakeTransparentWindowExist(tkwin, parent);
dispPtr = winPtr->dispPtr;
hPtr = Tcl_CreateHashEntry(&dispPtr->winTable, (char *) winPtr->window,
¬Used);
Tcl_SetHashValue(hPtr, winPtr);
winPtr->dirtyAtts = 0;
winPtr->dirtyChanges = 0;
if (!(winPtr->flags & TK_TOP_HIERARCHY)) {
TkWindow *winPtr2;
/*
* If any siblings higher up in the stacking order have already been
* created then move this window to its rightful position in the
* stacking order.
*
* NOTE: this code ignores any changes anyone might have made to the
* sibling and stack_mode field of the window's attributes, so it
* really isn't safe for these to be manipulated except by calling
* Tk_RestackWindow.
*/
for (winPtr2 = winPtr->nextPtr; winPtr2 != NULL;
winPtr2 = winPtr2->nextPtr) {
if ((winPtr2->window != None) &&
!(winPtr2->flags & (TK_TOP_HIERARCHY|TK_REPARENTED))) {
XWindowChanges changes;
changes.sibling = winPtr2->window;
changes.stack_mode = Below;
XConfigureWindow(winPtr->display, winPtr->window,
CWSibling | CWStackMode, &changes);
break;
}
}
}
/*
* Issue a ConfigureNotify event if there were deferred configuration
* changes (but skip it if the window is being deleted; the
* ConfigureNotify event could cause problems if we're being called from
* Tk_DestroyWindow under some conditions).
*/
if ((winPtr->flags & TK_NEED_CONFIG_NOTIFY)
&& !(winPtr->flags & TK_ALREADY_DEAD)) {
winPtr->flags &= ~TK_NEED_CONFIG_NOTIFY;
DoConfigureNotify((Tk_FakeWin *) tkwin);
}
}
