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app: [macOS] synchronize rendering with Core Animation for smooth resizes

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Magic incantations lifted from

https://thume.ca/2019/06/19/glitchless-metal-window-resizing/

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2023-12-19 17:24:56 -06:00
parent 93ac0b03f1
commit 35785e9c96
4 changed files with 22 additions and 3 deletions
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app/os_macos.go
+11
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@@ -195,6 +195,14 @@ static void setScreenFrame(CFTypeRef windowRef, CGFloat x, CGFloat y, CGFloat w,
}
}
static void resetLayerFrame(CFTypeRef viewRef) {
@autoreleasepool {
NSView* view = (__bridge NSView *)viewRef;
NSRect r = view.frame;
view.layer.frame = r;
}
}
static void hideWindow(CFTypeRef windowRef) {
@autoreleasepool {
NSWindow* window = (__bridge NSWindow *)windowRef;
@@ -456,6 +464,9 @@ func (w *window) Configure(options []Option) {
C.setWindowStandardButtonHidden(window, C.NSWindowCloseButton, barTrans)
C.setWindowStandardButtonHidden(window, C.NSWindowMiniaturizeButton, barTrans)
C.setWindowStandardButtonHidden(window, C.NSWindowZoomButton, barTrans)
// When toggling the titlebar, the layer doesn't update its frame
// until the next resize. Force it.
C.resetLayerFrame(w.view)
}
w.ProcessEvent(ConfigEvent{Config: w.config})
}