void ChoosePositionPushButton::mouseReleaseEvent(QMouseEvent *event)
{
QPushButton::mouseReleaseEvent(event);
emit positionChosen(event->globalPos());
stopMouseCapture();
}
ChoosePositionPushButton::~ChoosePositionPushButton()
{
if(mSearching)
stopMouseCapture();
nativeEventFilteringApp->removeNativeEventFilter(this);
delete mCrossIcon;
}
ChoosePositionPushButton::~ChoosePositionPushButton()
{
if(mSearching)
stopMouseCapture();
#ifdef Q_OS_UNIX
QCoreApplication::instance()->removeNativeEventFilter(this);
XFreeCursor(QX11Info::display(), mCrossCursor);
#endif
delete mCrossIcon;
}
bool ChoosePositionPushButton::x11EventFilter(XEvent *event)
{
if(event->type == ButtonRelease)
{
emit positionChosen(QCursor::pos());
stopMouseCapture();
return true;
}
return false;
}
ChooseWindowPushButton::~ChooseWindowPushButton()
{
if(mSearching)
stopMouseCapture();
nativeEventFilteringApp->removeNativeEventFilter(this);
#ifdef Q_WS_WIN
DeleteObject(mRectanglePen);
#endif
delete mCrossIcon;
}
bool ChooseWindowPushButton::x11EventFilter(XEvent *event)
{
if(event->type == ButtonRelease)
{
Window window = windowAtPointer();
if(window == None)
return true;
if(isWindowValid(window))
mLastFoundWindow = window;
stopMouseCapture();
return true;
}
return false;
}
bool ChoosePositionPushButton::nativeEventFilter(const QByteArray &eventType, void *message, long *)
{
if(eventType == "xcb_generic_event_t")
{
auto* event = static_cast<xcb_generic_event_t *>(message);
switch(event->response_type)
{
case XCB_BUTTON_RELEASE:
emit positionChosen(QCursor::pos());
stopMouseCapture();
return false;
}
return false;
}
return false;
}
bool ChooseWindowPushButton::winEventFilter(MSG *msg, long *result)
{
Q_UNUSED(result);
if(!msg || !mSearching)
return false;
switch(msg->message)
{
case WM_LBUTTONUP:
stopMouseCapture();
break;
case WM_MOUSEMOVE:
{
POINT screenpoint;
GetCursorPos(&screenpoint);
HWND window = NULL;
HWND firstWindow = WindowFromPoint(screenpoint);
if(firstWindow && IsWindow(firstWindow))
{
// try to go to child window
if(!GetParent(firstWindow))
{
POINT pt;
pt.x = screenpoint.x;
pt.y = screenpoint.y;
ScreenToClient(firstWindow, &pt);
HWND childWindow = ChildWindowFromPoint(firstWindow, pt);
if(firstWindow != childWindow)
{
RECT rc;
GetWindowRect(childWindow, &rc);
if(PtInRect(screenpoint, rc))
// it may seem strange to check this condition after above lines
// but try to comment it and work with MSDN main window,
// you will hardly "find" it
firstWindow = childWindow;
}
}
// find the best child
if(GetParent(firstWindow))
{
RECT rcFirst;
GetWindowRect(firstWindow, &rcFirst);
// find next/prev windows in the Z-order
bool bBestFound = false;
HWND hOther = firstWindow;
do
{
hOther = GetNextWindow(hOther, GW_HWNDPREV);
if(!hOther)
break;
RECT rcOther;
GetWindowRect(hOther, &rcOther);
if(PtInRect(screenpoint, rcOther) &&
PtInRect(RectTopLeft(rcOther), rcFirst) &&
PtInRect(RectBottomRight(rcOther), rcFirst))
{
firstWindow = hOther;
bBestFound = true;
}
}
while(!bBestFound);
if(!bBestFound)
{
hOther = firstWindow;
do
{
hOther = GetNextWindow(hOther, GW_HWNDNEXT);
if (!hOther) break;
RECT rcOther;
GetWindowRect(hOther, &rcOther);
if(PtInRect(screenpoint, rcOther) &&
PtInRect(RectTopLeft(rcOther), rcFirst) &&
PtInRect(RectBottomRight(rcOther), rcFirst))
{
firstWindow = hOther;
bBestFound = true;
}
}
while(!bBestFound);
}
}
window = firstWindow;
}
else
break;
foundWindow(WindowHandle(window));
}
break;
}
return false;
}
void ChooseWindowPushButton::mouseReleaseEvent(QMouseEvent *event)
{
QPushButton::mouseReleaseEvent(event);
stopMouseCapture();
}
