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ui/cocoa: Draw black rectangle if we have no data yet

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If our redraw method is called before we have any data from the guest,
then draw a black rectangle rather than leaving the window empty.
This mostly only matters when the guest machine has no framebuffer
device, but it is more in line with the behaviour of other QEMU UIs.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1387853507-26298-3-git-send-email-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2013-12-24 02:51:47 +00:00
parent d3345a0484
commit 7d270b1c21
1 changed files with 6 additions and 1 deletions
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7
ui/cocoa.m
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@ -321,7 +321,12 @@ QemuCocoaView *cocoaView;
CGContextSetShouldAntialias (viewContextRef, NO);
// draw screen bitmap directly to Core Graphics context
if (dataProviderRef) {
if (!dataProviderRef) {
// Draw request before any guest device has set up a framebuffer:
// just draw an opaque black rectangle
CGContextSetRGBFillColor(viewContextRef, 0, 0, 0, 1.0);
CGContextFillRect(viewContextRef, NSRectToCGRect(rect));
} else {
CGImageRef imageRef = CGImageCreate(
screen.width, //width
screen.height, //height