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add border radius to frameless window (#20360)

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Nate Wienert 2020-01-12 22:43:00 -08:00 • committed by Cheng Zhao
parent 20c910f98e
commit 425d2a2e1b
3 changed files with 31 additions and 0 deletions
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22
shell/browser/native_window_mac.mm
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@ -1372,6 +1372,28 @@ void NativeWindowMac::SetVibrancy(const std::string& type) {
[effect_view setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
[effect_view setBlendingMode:NSVisualEffectBlendingModeBehindWindow];
[effect_view setState:NSVisualEffectStateActive];
// The default corner radius of a macOS window.
CGFloat radius = 5.0f;
CGFloat dimension = 2 * radius + 1;
NSSize size = NSMakeSize(dimension, dimension);
NSImage* maskImage = [[NSImage imageWithSize:size
flipped:NO
drawingHandler:^BOOL(NSRect rect) {
NSBezierPath* bezierPath = [NSBezierPath
bezierPathWithRoundedRect:rect
xRadius:radius
yRadius:radius];
[[NSColor blackColor] set];
[bezierPath fill];
return YES;
}] autorelease];
[maskImage setCapInsets:NSEdgeInsetsMake(radius, radius, radius, radius)];
[maskImage setResizingMode:NSImageResizingModeStretch];
[effect_view setMaskImage:maskImage];
[window_ setCornerMask:maskImage];
[[window_ contentView] addSubview:effect_view
positioned:NSWindowBelow
relativeTo:nil];