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1 /*
2  * Copyright 2013 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #ifndef SkPDFDeviceFlattener_DEFINED
9 #define SkPDFDeviceFlattener_DEFINED
10 
11 #include "SkPDFDevice.h"
12 
13 
14 /** \class SkPDFDeviceFlattener
15 
16     The PDF Device Flattener is used to flatten features without native support in PDF.
17     For now, the only one implemented is Perspective.
18 
19     TODO(edisonn): Rename the class once we know all the things it will do.
20 */
21 class SkPDFDeviceFlattener : public SkPDFDevice {
22 private:
23     typedef SkPDFDevice INHERITED;
24 
25     SK_API SkPDFDeviceFlattener(const SkSize& pageSize, const SkRect* trimBox = NULL);
26 
27 public:
28     SK_API virtual ~SkPDFDeviceFlattener();
29 
30     virtual void drawPoints(const SkDraw&, SkCanvas::PointMode mode,
31                             size_t count, const SkPoint[],
32                             const SkPaint& paint) SK_OVERRIDE;
33     virtual void drawRect(const SkDraw&, const SkRect& r, const SkPaint& paint);
34     virtual void drawPath(const SkDraw&, const SkPath& origpath,
35                           const SkPaint& paint, const SkMatrix* prePathMatrix,
36                           bool pathIsMutable) SK_OVERRIDE;
37     virtual void drawText(const SkDraw&, const void* text, size_t len,
38                           SkScalar x, SkScalar y, const SkPaint&) SK_OVERRIDE;
39     virtual void drawPosText(const SkDraw&, const void* text, size_t len,
40                              const SkScalar pos[], SkScalar constY,
41                              int scalarsPerPos, const SkPaint&) SK_OVERRIDE;
42     virtual void drawTextOnPath(const SkDraw&, const void* text, size_t len,
43                                 const SkPath& path, const SkMatrix* matrix,
44                                 const SkPaint& paint) SK_OVERRIDE;
45 private:
46 
47     bool mustFlatten(const SkDraw& d) const;
48     bool mustPathText(const SkDraw& d, const SkPaint& paint);
49 
50     friend class SkDocument_PDF;
51 };
52 
53 #endif  // SkPDFDeviceFlattener_DEFINED
54