Index: cc/resources/transparency_display_item.cc |
diff --git a/cc/resources/transparency_display_item.cc b/cc/resources/transparency_display_item.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..0401d90f74e6f972d66e5ca4c6a3510ddcb35d5c |
--- /dev/null |
+++ b/cc/resources/transparency_display_item.cc |
@@ -0,0 +1,65 @@ |
+// Copyright 2014 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "cc/resources/transparency_display_item.h" |
+ |
+#include "third_party/skia/include/core/SkCanvas.h" |
+#include "third_party/skia/include/core/SkPaint.h" |
+#include "third_party/skia/include/core/SkXfermode.h" |
+#include "ui/gfx/skia_util.h" |
+ |
+namespace cc { |
+ |
+TransparencyDisplayItem::TransparencyDisplayItem(float opacity, |
+ SkXfermode::Mode blend_mode) |
+ : opacity_(opacity), blend_mode_(blend_mode) { |
+} |
+ |
+TransparencyDisplayItem::~TransparencyDisplayItem() { |
+} |
+ |
+void TransparencyDisplayItem::Raster(SkCanvas* canvas, |
+ SkDrawPictureCallback* callback) const { |
+ SkPaint paint; |
+ paint.setXfermodeMode(blend_mode_); |
+ paint.setAlpha(opacity_ * 255); |
+ canvas->saveLayer(NULL, &paint); |
+} |
+ |
+bool TransparencyDisplayItem::IsSuitableForGpuRasterization() const { |
+ return true; |
+} |
+ |
+int TransparencyDisplayItem::ApproximateOpCount() const { |
+ return 1; |
+} |
+ |
+size_t TransparencyDisplayItem::PictureMemoryUsage() const { |
+ return sizeof(float) + sizeof(SkXfermode::Mode); |
+} |
+ |
+EndTransparencyDisplayItem::EndTransparencyDisplayItem() { |
+} |
+ |
+EndTransparencyDisplayItem::~EndTransparencyDisplayItem() { |
+} |
+ |
+void EndTransparencyDisplayItem::Raster(SkCanvas* canvas, |
+ SkDrawPictureCallback* callback) const { |
+ canvas->restore(); |
+} |
+ |
+bool EndTransparencyDisplayItem::IsSuitableForGpuRasterization() const { |
+ return true; |
+} |
+ |
+int EndTransparencyDisplayItem::ApproximateOpCount() const { |
+ return 0; |
+} |
+ |
+size_t EndTransparencyDisplayItem::PictureMemoryUsage() const { |
+ return 0; |
+} |
+ |
+} // namespace cc |