Connect Skia PDF backend to printing subsystem.

skia/ext/vector_platform_device_skia.h

+// Copyright (c) 2011 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_VECTOR_PLATFORM_DEVICE_SKIA_H_
+#define SKIA_EXT_VECTOR_PLATFORM_DEVICE_SKIA_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "base/logging.h"
+#include "skia/ext/platform_device.h"
+#include "third_party/skia/include/core/SkMatrix.h"
+#include "third_party/skia/include/core/SkRefCnt.h"
+#include "third_party/skia/include/core/SkTScopedPtr.h"
+#include "third_party/skia/include/pdf/SkPDFDevice.h"
+
+class SkClipStack;
+struct SkIRect;
+struct SkRect;
+
+namespace skia {
+
+class BitmapPlatformDevice;
+
+class VectorPlatformDeviceSkiaFactory : public SkDeviceFactory {
+ public:
+  virtual SkDevice* newDevice(SkCanvas* notUsed, SkBitmap::Config config,
+                              int width, int height, bool isOpaque,
+                              bool isForLayer);
+};
+
+class VectorPlatformDeviceSkia : public PlatformDevice {
+ public:
+  VectorPlatformDeviceSkia(int width, int height,
+                           SkPDFDevice::OriginTransform flip);
+
+  ~VectorPlatformDeviceSkia();
+
+  SkPDFDevice* PdfDevice() { return pdf_device_.get(); }
+
+  // PlatformDevice methods.
+  virtual bool IsVectorial();
+  virtual bool IsNativeFontRenderingAllowed();
+
+  virtual PlatformSurface BeginPlatformPaint();
+  virtual void EndPlatformPaint();
+
+  // SkDevice methods.
+  virtual SkDeviceFactory* getDeviceFactory();
+  virtual uint32_t getDeviceCapabilities();
+
+  virtual int width() const;
+  virtual int height() const;
+  virtual void setMatrixClip(const SkMatrix& matrix, const SkRegion& region,
+                             const SkClipStack& stack);
+  virtual bool readPixels(const SkIRect& srcRect, SkBitmap* bitmap);
+
+  virtual void drawPaint(const SkDraw& draw, const SkPaint& paint);
+  virtual void drawPoints(const SkDraw& draw, SkCanvas::PointMode mode,
+                          size_t count, const SkPoint[], const SkPaint& paint);
+  virtual void drawRect(const SkDraw& draw, const SkRect& rect,
+                        const SkPaint& paint);
+  virtual void drawPath(const SkDraw& draw, const SkPath& path,
+                        const SkPaint& paint, const SkMatrix* prePathMatrix,
+                        bool pathIsMutable);
+  virtual void drawBitmap(const SkDraw& draw, const SkBitmap& bitmap,
+                          const SkIRect* srcRectOrNull, const SkMatrix& matrix,
+                          const SkPaint& paint);
+  virtual void drawSprite(const SkDraw& draw, const SkBitmap& bitmap,
+                          int x, int y, const SkPaint& paint);
+  virtual void drawText(const SkDraw& draw, const void* text, size_t len,
+                        SkScalar x, SkScalar y, const SkPaint& paint);
+  virtual void drawPosText(const SkDraw& draw, const void* text, size_t len,
+                           const SkScalar pos[], SkScalar constY,
+                           int scalarsPerPos, const SkPaint& paint);
+  virtual void drawTextOnPath(const SkDraw& draw, const void* text, size_t len,
+                              const SkPath& path, const SkMatrix* matrix,
+                              const SkPaint& paint);
+  virtual void drawVertices(const SkDraw& draw, SkCanvas::VertexMode,
+                            int vertexCount, const SkPoint verts[],
+                            const SkPoint texs[], const SkColor colors[],
+                            SkXfermode* xmode, const uint16_t indices[],
+                            int indexCount, const SkPaint& paint);
+  virtual void drawDevice(const SkDraw& draw, SkDevice*, int x, int y,
+                          const SkPaint&);
+
+#if defined(OS_WIN)
+  virtual void drawToHDC(HDC dc, int x, int y, const RECT* src_rect);
+#endif
+
+  // Our own methods.
+
+  // This needs to be called before anything is drawn.
+  void setInitialTransform(int xOffset, int yOffset, float scale_factor);
+
+ private:
+  SkRefPtr<SkPDFDevice> pdf_device_;
+  SkMatrix base_transform_;
+  SkRefPtr<BitmapPlatformDevice> raster_surface_;
+
+  DISALLOW_COPY_AND_ASSIGN(VectorPlatformDeviceSkia);
+};
+
+}  // namespace skia
+
+#endif  // SKIA_EXT_VECTOR_PLATFORM_DEVICE_SKIA_H_