Pass printing result to the browser....

skia/ext/vector_platform_device_linux.h

 // Copyright (c) 2009 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_LINUX_H_
 #define SKIA_EXT_VECTOR_PLATFORM_DEVICE_LINUX_H_
 
 #include "skia/ext/platform_device.h"
 #include "third_party/skia/include/core/SkMatrix.h"
 #include "third_party/skia/include/core/SkRegion.h"
 
-typedef struct _cairo_surface cairo_surface_t;
-
 namespace skia {
 
 // This device is basically a wrapper that provides a surface for SkCanvas
 // to draw into. It is basically an adaptor which converts skia APIs into
-// cooresponding Cairo APIs and outputs to a Cairo PDF surface. Please NOTE
-// that since it is completely vectorial, the bitmap content in it is thus
+// cooresponding Cairo APIs and outputs to a Cairo surface. Please NOTE that
+// since it is completely vectorial, the bitmap content in it is thus
 // meaningless.
 class VectorPlatformDevice : public PlatformDevice {
  public:
-  // Factory function.
-  static VectorPlatformDevice* create(int width, int height);
-
+  // Factory function. Ownership of |context| is not transferred.
+  static VectorPlatformDevice* create(PlatformSurface context,
+                                      int width, int height);
   virtual ~VectorPlatformDevice();
 
   virtual bool IsVectorial() { return true; }
   virtual PlatformSurface beginPlatformPaint() { return context_; }
 
   // We translate following skia APIs into corresponding Cairo APIs.
   virtual void drawBitmap(const SkDraw& draw, const SkBitmap& bitmap,
                           const SkMatrix& matrix, const SkPaint& paint);
   virtual void drawDevice(const SkDraw& draw, SkDevice*, int x, int y,
                           const SkPaint&);
@@ skipping 13 matching lines @@
                         SkScalar x, SkScalar y, 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 setMatrixClip(const SkMatrix& transform, const SkRegion& region);
+  virtual void setMatrixClip(const SkMatrix& transform,
+                             const SkRegion& region);
 
  protected:
-  explicit VectorPlatformDevice(const SkBitmap& bitmap);
+  explicit VectorPlatformDevice(PlatformSurface context,
+                                const SkBitmap& bitmap);
 
  private:
   // Apply paint's color in the context.
   void ApplyPaintColor(const SkPaint& paint);
 
   // Apply path's fill style in the context.
   void ApplyFillStyle(const SkPath& path);
 
   // Apply paint's stroke style in the context.
   void ApplyStrokeStyle(const SkPaint& paint);
@@ skipping 15 matching lines @@
 
   // Use matrix to set up context's transformation.
   void LoadTransformToContext(const SkMatrix& matrix);
 
   // Transformation assigned to the context.
   SkMatrix transform_;
 
   // The current clipping region.
   SkRegion clip_region_;
 
-  // Context's target surface. It is a PS/PDF surface.
-  cairo_surface_t* surface_;
-
   // Device context.
-  cairo_t* context_;
+  PlatformSurface context_;
 
   // Copy & assign are not supported.
   VectorPlatformDevice(const VectorPlatformDevice&);
   const VectorPlatformDevice& operator=(const VectorPlatformDevice&);
 };
 
 }  // namespace skia
 
 #endif  // SKIA_EXT_VECTOR_PLATFORM_DEVICE_LINUX_H_