[NOT FOR COMMIT] Fully replace SkCanvas uses.

skia/ext/cdl_picture_buffer.h

+// 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.
+
+#ifndef SKIA_EXT_CDL_PICTURE_BUFFER_H_
+#define SKIA_EXT_CDL_PICTURE_BUFFER_H_
+
+#include "cdl_common.h"
+
+#if CDL_ENABLED
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "base/compiler_specific.h"
+
+#include "third_party/skia/include/core/SkCanvas.h"
+#include "third_party/skia/include/core/SkPaint.h"
+#include "third_party/skia/include/core/SkPath.h"
+#include "third_party/skia/include/core/SkDrawable.h"
+#include "third_party/skia/include/core/SkRect.h"
+#include "third_party/skia/include/private/SkTDArray.h"
+
+class CdlCanvas;
+class CdlPaint;
+class CdlPicture;
+
+class CdlPictureBuffer : public SkRefCnt /*public SkDrawable*/ {
+ public:
+  CdlPictureBuffer(SkRect bounds);
+  ~CdlPictureBuffer() override;
+
+  // Prepares to append new picture to same record.
+  void resetForNextPicture(SkRect bounds);
+
+  // Discards full contents.
+  void reset(SkRect);
+
+  void makeThreadsafe();
+  bool empty() const { return fUsed == 0; }
+  int getRecordOffset() { return fUsed; }
+
+  void playback(CdlCanvas*, int start_offset, int end_offset);
+
+  SkRect getBounds();
+
+  // Draws as if...
+  //   SkRect bounds = this->getBounds();
+  //   canvas->saveLayer(&bounds, paint);
+  //       this->draw(canvas, matrix);
+  //   canvas->restore();
+  void drawAsLayer(CdlCanvas*, const SkMatrix*, const SkPaint*);
+
+  void save();
+  void saveLayer(const SkRect*,
+                 const CdlPaint*,
+                 const SkImageFilter*,
+                 SkCanvas::SaveLayerFlags);
+  void restore();
+
+  void concat(const SkMatrix&);
+  void setMatrix(const SkMatrix&);
+  void translate(SkScalar, SkScalar);
+
+  void clipPath(const SkPath&, SkCanvas::ClipOp, bool aa);
+  void clipRect(const SkRect&, SkCanvas::ClipOp, bool aa);
+  void clipRRect(const SkRRect&, SkCanvas::ClipOp, bool aa);
+  void clipRegion(const SkRegion&, SkCanvas::ClipOp);
+
+  void drawPaint(const CdlPaint&);
+  void drawPath(const SkPath&, const CdlPaint&);
+  void drawRect(const SkRect&, const CdlPaint&);
+  void drawRRect(const SkRRect&, const CdlPaint&);
+  void drawDRRect(const SkRRect&, const SkRRect&, const CdlPaint&);
+  void drawOval(const SkRect&, const CdlPaint&);
+
+  void drawAnnotation(const SkRect&, const char*, SkData*);
+  void drawPicture(const CdlPicture*, const SkMatrix*, const CdlPaint*);
+
+  void drawText(const void*, size_t, SkScalar, SkScalar, const CdlPaint&);
+  void drawPosText(const void*, size_t, const SkPoint[], const CdlPaint&);
+  void drawTextBlob(const SkTextBlob*, SkScalar, SkScalar, const CdlPaint&);
+
+  void drawImage(sk_sp<const SkImage>, SkScalar, SkScalar, const CdlPaint*);
+  void drawImageRect(sk_sp<const SkImage>,
+                     const SkRect*,
+                     const SkRect&,
+                     const CdlPaint*,
+                     SkCanvas::SrcRectConstraint);
+  void drawPoints(SkCanvas::PointMode,
+                  size_t,
+                  const SkPoint[],
+                  const CdlPaint&);
+  void setBounds(const SkRect& bounds);
+
+  // Cdl
+  struct DrawContext {};
+
+ private:
+  // SkRect onGetBounds() override;
+  // void onDraw(SkCanvas*) override;
+
+  template <typename T, typename... Args>
+  void* push(size_t, Args&&...);
+
+  template <typename Fn, typename... Args>
+  void map(const Fn[], int start_offset, int end_offset, Args...);
+
+  SkAutoTMalloc<uint8_t> fBytes;
+  size_t fUsed;
+  size_t fReserved;
+  SkRect fBounds;
+};
+
+#endif
+
+#endif  // SKIA_EXT_CDL_PICTURE_BUFFER_H_