Battery Status API: add UMA logging for Linux.
[chromium-blink-merge.git] / content / browser / renderer_host / software_layer_mac.mm
blobf78a339334a8cb503531833bbec3c497162eb2e5
1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "content/browser/renderer_host/software_layer_mac.h"
7 #include "base/debug/trace_event.h"
8 #include "base/mac/mac_util.h"
9 #include "base/mac/scoped_cftyperef.h"
10 #include "base/mac/sdk_forward_declarations.h"
11 #include "ui/base/cocoa/animation_utils.h"
13 @implementation SoftwareLayer
15 - (id)init {
16   if (self = [super init]) {
17     [self setBackgroundColor:CGColorGetConstantColor(kCGColorWhite)];
18     [self setAnchorPoint:CGPointMake(0, 0)];
19     // Setting contents gravity is necessary to prevent the layer from being
20     // scaled during dyanmic resizes (especially with devtools open).
21     [self setContentsGravity:kCAGravityTopLeft];
22   }
23   return self;
26 - (void)setContentsToData:(const void *)data
27              withRowBytes:(size_t)rowBytes
28             withPixelSize:(gfx::Size)pixelSize
29           withScaleFactor:(float)scaleFactor {
30   TRACE_EVENT0("browser", "-[SoftwareLayer setContentsToData]");
32   // Disable animating the contents change or the scale factor change.
33   ScopedCAActionDisabler disabler;
35   // Set the contents of the software CALayer to be a CGImage with the provided
36   // pixel data. Make a copy of the data before backing the image with them,
37   // because the same buffer will be reused for the next frame.
38   base::ScopedCFTypeRef<CFDataRef> dataCopy(
39       CFDataCreate(NULL,
40                    static_cast<const UInt8 *>(data),
41                    rowBytes * pixelSize.height()));
42   base::ScopedCFTypeRef<CGDataProviderRef> dataProvider(
43       CGDataProviderCreateWithCFData(dataCopy));
44   base::ScopedCFTypeRef<CGImageRef> image(
45       CGImageCreate(pixelSize.width(),
46                     pixelSize.height(),
47                     8,
48                     32,
49                     rowBytes,
50                     base::mac::GetSystemColorSpace(),
51                     kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host,
52                     dataProvider,
53                     NULL,
54                     false,
55                     kCGRenderingIntentDefault));
56   [self setContents:(id)image.get()];
57   [self setBounds:CGRectMake(
58       0, 0, pixelSize.width() / scaleFactor, pixelSize.height() / scaleFactor)];
60   // Set the contents scale of the software CALayer.
61   if ([self respondsToSelector:(@selector(contentsScale))] &&
62       [self respondsToSelector:(@selector(setContentsScale:))] &&
63       [self contentsScale] != scaleFactor) {
64     [self setContentsScale:scaleFactor];
65   }
68 @end