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Unified Diff: cc/resources/filter_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/filter_display_item.cc
diff --git a/cc/resources/filter_display_item.cc b/cc/resources/filter_display_item.cc
new file mode 100644
index 0000000000000000000000000000000000000000..63bfeee9d85d40c14054cc89772c249edd51b2ef
--- /dev/null
+++ b/cc/resources/filter_display_item.cc
@@ -0,0 +1,75 @@
+// 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/filter_display_item.h"
+
+#include "third_party/skia/include/core/SkCanvas.h"
+#include "third_party/skia/include/core/SkImageFilter.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 {
+
+FilterDisplayItem::FilterDisplayItem(skia::RefPtr<SkImageFilter> filter,
+ gfx::RectF bounds)
+ : filter_(filter), bounds_(bounds) {
+}
+
+FilterDisplayItem::~FilterDisplayItem() {
+}
+
+void FilterDisplayItem::Raster(SkCanvas* canvas,
+ SkDrawPictureCallback* callback) const {
+ canvas->save();
+ SkRect boundaries;
+ filter_->computeFastBounds(gfx::RectFToSkRect(bounds_), &boundaries);
+ canvas->translate(bounds_.x(), bounds_.y());
+ boundaries.offset(-bounds_.x(), -bounds_.y());
+
+ SkPaint paint;
+ paint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
+ paint.setImageFilter(filter_.get());
+ canvas->saveLayer(&boundaries, &paint);
+
+ canvas->translate(-bounds_.x(), -bounds_.y());
+}
+
+bool FilterDisplayItem::IsSuitableForGpuRasterization() const {
+ return true;
+}
+
+int FilterDisplayItem::ApproximateOpCount() const {
+ return 1;
+}
+
+size_t FilterDisplayItem::PictureMemoryUsage() const {
+ return sizeof(skia::RefPtr<SkImageFilter>) + sizeof(gfx::RectF);
+}
+
+EndFilterDisplayItem::EndFilterDisplayItem() {
+}
+
+EndFilterDisplayItem::~EndFilterDisplayItem() {
+}
+
+void EndFilterDisplayItem::Raster(SkCanvas* canvas,
+ SkDrawPictureCallback* callback) const {
+ canvas->restore();
+ canvas->restore();
+}
+
+bool EndFilterDisplayItem::IsSuitableForGpuRasterization() const {
+ return true;
+}
+
+int EndFilterDisplayItem::ApproximateOpCount() const {
+ return 0;
+}
+
+size_t EndFilterDisplayItem::PictureMemoryUsage() const {
+ return 0;
+}
+
+} // namespace cc
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