Update the SkDocument interface to allow for 1) abort won't emit pdf, 2) close can report success/f…

src/doc/SkCanvasSimplifier.h

+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+
+#ifndef SkCanvasSimplifier_DEFINED
+#define SkCanvasSimplifier_DEFINED
+
+#include "SkCanvas.h"
+
+/** \class SkCanvasSimplifier
+
+    Canvas Simplifier will simplify the geometry and the paint so it is easier to have the vectorial
+    properties preserved.
+
+    Right now it is a pass though layer, that calls into the base canvas.
+
+    TODO(edisonn): For example instead f using perspective matrix, it will flatten the geometry so
+    PDF can export the geometry easier.
+
+    TODO(edisonn): It could update the shader of the paint, or do other xfer that PDF does not
+    support natively.
+*/
+class SkCanvasSimplifier : public SkCanvas {

[vandebo (ex-Chrome), 2013/09/27 15:50:17]

There's probably a better name for this: SkPerspectiveFlatteningCanvas ?

[edisonn, 2013/10/04 19:40:37]

removed

+public:
+    SK_DECLARE_INST_COUNT(SkCanvasSimplifier)
+
+    SkCanvasSimplifier();
+
+    /** Construct a canvas with the specified device to draw into.
+         @param device   Specifies a device for the canvas to draw into.
+    */
+    explicit SkCanvasSimplifier(SkBaseDevice* device);
+
+    virtual ~SkCanvasSimplifier();
+
+    virtual int save(SaveFlags flags = kMatrixClip_SaveFlag);
+
+    virtual int saveLayer(const SkRect* bounds, const SkPaint* paint,
+                          SaveFlags flags = kARGB_ClipLayer_SaveFlag);
+
+    virtual void restore();
+
+    virtual bool isDrawingToLayer() const;
+
+    virtual bool translate(SkScalar dx, SkScalar dy);
+
+    virtual bool scale(SkScalar sx, SkScalar sy);
+
+    virtual bool rotate(SkScalar degrees);
+
+    virtual bool skew(SkScalar sx, SkScalar sy);
+
+    virtual bool concat(const SkMatrix& matrix);
+
+    virtual void setMatrix(const SkMatrix& matrix);
+
+    virtual bool clipRect(const SkRect& rect,
+                          SkRegion::Op op = SkRegion::kIntersect_Op,
+                          bool doAntiAlias = false);
+
+    virtual bool clipRRect(const SkRRect& rrect,
+                           SkRegion::Op op = SkRegion::kIntersect_Op,
+                           bool doAntiAlias = false);
+
+    virtual bool clipPath(const SkPath& path,
+                          SkRegion::Op op = SkRegion::kIntersect_Op,
+                          bool doAntiAlias = false);
+
+    virtual bool clipRegion(const SkRegion& deviceRgn,
+                            SkRegion::Op op = SkRegion::kIntersect_Op);
+
+    virtual void clear(SkColor);
+
+    virtual void drawPaint(const SkPaint& paint);
+
+    virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],
+                            const SkPaint& paint);
+
+    virtual void drawRect(const SkRect& rect, const SkPaint& paint);
+
+    virtual void drawOval(const SkRect& oval, const SkPaint&);
+
+    virtual void drawRRect(const SkRRect& rrect, const SkPaint& paint);
+
+    virtual void drawPath(const SkPath& path, const SkPaint& paint);
+
+    virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top,
+                            const SkPaint* paint = NULL);
+
+    virtual void drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src,
+                                      const SkRect& dst,
+                                      const SkPaint* paint = NULL,
+                                      DrawBitmapRectFlags flags = kNone_DrawBitmapRectFlag);
+
+    virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m,
+                                  const SkPaint* paint = NULL);
+
+    virtual void drawBitmapNine(const SkBitmap& bitmap, const SkIRect& center,
+                                const SkRect& dst, const SkPaint* paint = NULL);
+
+    virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
+                            const SkPaint* paint = NULL);
+
+
+    virtual void drawText(const void* text, size_t byteLength, SkScalar x,
+                          SkScalar y, const SkPaint& paint);
+
+    virtual void drawPosText(const void* text, size_t byteLength,
+                             const SkPoint pos[], const SkPaint& paint);
+
+    virtual void drawPosTextH(const void* text, size_t byteLength,
+                              const SkScalar xpos[], SkScalar constY,
+                              const SkPaint& paint);
+
+    virtual void drawTextOnPath(const void* text, size_t byteLength,
+                                const SkPath& path, const SkMatrix* matrix,
+                                const SkPaint& paint);
+
+    virtual void drawPicture(SkPicture& picture);
+
+    virtual void drawVertices(VertexMode vmode, int vertexCount,
+                              const SkPoint vertices[], const SkPoint texs[],
+                              const SkColor colors[], SkXfermode* xmode,
+                              const uint16_t indices[], int indexCount,
+                              const SkPaint& paint);
+
+
+    virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter);
+
+
+private:
+    typedef SkCanvas INHERITED;
+};
+
+#endif  // SkCanvasSimplifier_DEFINED