[NOT FOR COMMIT] Fully replace SkCanvas uses.

skia/ext/cdl_picture.cc

+// Copyright (c) 2013 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 "skia/ext/cdl_picture.h"
+
+#if CDL_ENABLED
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "base/atomicops.h"
+#include "base/logging.h"
+#include "third_party/skia/include/core/SkPicture.h"
+#include "third_party/skia/include/core/SkPictureRecorder.h"
+
+#include "skia/ext/cdl_picture_buffer.h"
+
+CdlPicture::CdlPicture(sk_sp<CdlPictureBuffer> picture,
+                       SkRect cull_bounds,
+                       int start_offset,
+                       int end_offset)
+    : picture_(picture),
+      cull_bounds_(cull_bounds),
+      start_offset_(start_offset),
+      end_offset_(end_offset) {}
+
+CdlPicture::~CdlPicture() {}
+
+void CdlPicture::draw(CdlCanvas* canvas,
+                      const SkMatrix* matrix,
+                      const CdlPaint* paint) const {
+  canvas->drawPicture(this, matrix, paint);
+}
+
+sk_sp<SkPicture> CdlPicture::toSkPicture() const {
+  SkPictureRecorder recorder;
+  SkCanvas* canvas = recorder.beginRecording(cullRect());
+  picture_->playback(CdlCanvas::Make(canvas).get(), start_offset_, end_offset_);
+
+  return recorder.finishRecordingAsPicture();
+}
+
+void CdlPicture::playback(CdlCanvas* canvas,
+                          SkPicture::AbortCallback* callback) const {
+  // TODO(cdl): CdlPicture doesn't support AbortCallback.
+  int save_count = canvas->getSaveCount();
+  canvas->save();
+  picture_->playback(canvas, start_offset_, end_offset_);
+  canvas->restoreToCount(save_count);
+}
+
+uint32_t CdlPicture::uniqueID() const {
+  if (!unique_id_) {
+    static base::subtle::Atomic32 g_next_id = 1;
+    unique_id_ = base::subtle::Barrier_AtomicIncrement(&g_next_id, 1);
+  }
+  return unique_id_;
+}
+
+#endif  // CDL_ENABLED