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Show RpWindow on Windows after initial paint

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To avoid white flash
This commit is contained in:
Ilya Fedin 2024-01-12 23:10:22 +04:00 • committed by John Preston
parent b429fdcf98
commit 683e532d15
1 changed files with 29 additions and 0 deletions
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29
ui/platform/win/ui_window_win.cpp
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@ -14,6 +14,7 @@
#include "ui/widgets/elastic_scroll.h"
#include "base/platform/win/base_windows_safe_library.h"
#include "base/platform/base_platform_info.h"
#include "base/event_filter.h"
#include "base/integration.h"
#include "base/invoke_queued.h"
#include "base/debug_log.h"
@ -492,6 +493,34 @@ void WindowHelper::init() {
handleDirectManipulationEvent(event);
}, window()->lifetime());
}
window()->shownValue() | rpl::filter([=](bool shown) {
return !shown;
}) | rpl::start_with_next([=] {
BOOL cloak = TRUE;
DwmSetWindowAttribute(_handle, DWMWA_CLOAK, &cloak, sizeof(cloak));
const auto firstPaintEventFilter = std::make_shared<QObject*>(nullptr);
*firstPaintEventFilter = base::install_event_filter(
window()->windowHandle(),
[=](not_null<QEvent*> e) {
if (!*firstPaintEventFilter
|| e->type() != QEvent::Expose
|| !window()->windowHandle()->isExposed()) {
return base::EventFilterResult::Continue;
}
InvokeQueued(*firstPaintEventFilter, [=] {
BOOL cloak = FALSE;
DwmSetWindowAttribute(
_handle,
DWMWA_CLOAK,
&cloak,
sizeof(cloak));
delete base::take(*firstPaintEventFilter);
});
return base::EventFilterResult::Continue;
});
}, window()->lifetime());
}
void WindowHelper::handleDirectManipulationEvent(