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Unified Diff: cc/resources/transparency_display_item.cc

Issue 761903003: Update from https://crrev.com/306655 (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 6 years ago
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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
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