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fix: make 'setParentWindow' compatible under Windows (#15775)

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Simone Cattaneo 2018-12-13 01:05:16 +01:00 • committed by Shelley Vohr
parent 4250f84272
commit 649633bbb7
4 changed files with 23 additions and 24 deletions
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35
atom/browser/native_window_views.cc
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@ -989,20 +989,27 @@ void NativeWindowViews::SetParentWindow(NativeWindow* parent) {
XSetTransientForHint(
xdisplay, GetAcceleratedWidget(),
parent ? parent->GetAcceleratedWidget() : DefaultRootWindow(xdisplay));
#elif defined(OS_WIN) && defined(DEBUG)
// Should work, but does not, it seems that the views toolkit doesn't support
// reparenting on desktop.
if (parent) {
::SetParent(GetAcceleratedWidget(), parent->GetAcceleratedWidget());
views::Widget::ReparentNativeView(GetNativeWindow(),
parent->GetNativeWindow());
wm::AddTransientChild(parent->GetNativeWindow(), GetNativeWindow());
} else {
if (!GetNativeWindow()->parent())
return;
::SetParent(GetAcceleratedWidget(), NULL);
views::Widget::ReparentNativeView(GetNativeWindow(), nullptr);
wm::RemoveTransientChild(GetNativeWindow()->parent(), GetNativeWindow());
#elif defined(OS_WIN)
// To set parentship between windows into Windows is better to play with the
// owner instead of the parent, as Windows natively seems to do if a parent
// is specified at window creation time.
// For do this we must NOT use the ::SetParent function, instead we must use
// the ::GetWindowLongPtr or ::SetWindowLongPtr functions with "nIndex" set
// to "GWLP_HWNDPARENT" which actually means the window owner.
HWND hwndParent = parent ? parent->GetAcceleratedWidget() : NULL;
if (hwndParent ==
(HWND)::GetWindowLongPtr(GetAcceleratedWidget(), GWLP_HWNDPARENT))
return;
::SetWindowLongPtr(GetAcceleratedWidget(), GWLP_HWNDPARENT,
(LONG_PTR)hwndParent);
// Ensures the visibility
if (IsVisible()) {
WINDOWPLACEMENT wp;
wp.length = sizeof(WINDOWPLACEMENT);
::GetWindowPlacement(GetAcceleratedWidget(), &wp);
::ShowWindow(GetAcceleratedWidget(), SW_HIDE);
::ShowWindow(GetAcceleratedWidget(), wp.showCmd);
::BringWindowToTop(GetAcceleratedWidget());
}
#endif
}