gfx/skia/trunk/src/core/SkBBoxRecord.h@97036ab72558
gfx/skia/trunk/src/core/SkBBoxRecord.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
2 /*
3 * Copyright 2012 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
9 #ifndef SkBBoxRecord_DEFINED
10 #define SkBBoxRecord_DEFINED
12 #include "SkPictureRecord.h"
14 /**
15 * This is an abstract SkPictureRecord subclass that intercepts draw calls and computes an
16 * axis-aligned bounding box for each draw that it sees, subclasses implement handleBBox()
17 * which will be called every time we get a new bounding box.
18 */
19 class SkBBoxRecord : public SkPictureRecord {
20 public:
22 SkBBoxRecord(const SkISize& size, uint32_t recordFlags) : INHERITED(size, recordFlags) {}
23 virtual ~SkBBoxRecord() { }
25 /**
26 * This is called each time we get a bounding box, it will be axis-aligned,
27 * in device coordinates, and expanded to include stroking, shadows, etc.
28 */
29 virtual void handleBBox(const SkRect& bbox) = 0;
31 virtual void drawOval(const SkRect& rect, const SkPaint& paint) SK_OVERRIDE;
32 virtual void drawRRect(const SkRRect& rrect, const SkPaint& paint) SK_OVERRIDE;
33 virtual void drawRect(const SkRect& rect, const SkPaint& paint) SK_OVERRIDE;
34 virtual void drawPath(const SkPath& path, const SkPaint& paint) SK_OVERRIDE;
35 virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],
36 const SkPaint& paint) SK_OVERRIDE;
37 virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE;
38 virtual void clear(SkColor) SK_OVERRIDE;
39 virtual void drawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
40 const SkPaint& paint) SK_OVERRIDE;
41 virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top,
42 const SkPaint* paint = NULL) SK_OVERRIDE;
43 virtual void drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src,
44 const SkRect& dst, const SkPaint* paint,
45 DrawBitmapRectFlags flags) SK_OVERRIDE;
46 virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& mat,
47 const SkPaint* paint) SK_OVERRIDE;
48 virtual void drawBitmapNine(const SkBitmap& bitmap, const SkIRect& center,
49 const SkRect& dst, const SkPaint* paint) SK_OVERRIDE;
50 virtual void drawPosText(const void* text, size_t byteLength,
51 const SkPoint pos[], const SkPaint& paint) SK_OVERRIDE;
52 virtual void drawPosTextH(const void* text, size_t byteLength,
53 const SkScalar xpos[], SkScalar constY,
54 const SkPaint& paint) SK_OVERRIDE;
55 virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
56 const SkPaint* paint) SK_OVERRIDE;
57 virtual void drawTextOnPath(const void* text, size_t byteLength,
58 const SkPath& path, const SkMatrix* matrix,
59 const SkPaint& paint) SK_OVERRIDE;
60 virtual void drawVertices(VertexMode mode, int vertexCount,
61 const SkPoint vertices[], const SkPoint texs[],
62 const SkColor colors[], SkXfermode* xfer,
63 const uint16_t indices[], int indexCount,
64 const SkPaint& paint) SK_OVERRIDE;
65 virtual void drawPicture(SkPicture& picture) SK_OVERRIDE;
67 protected:
68 virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) SK_OVERRIDE;
70 private:
71 /**
72 * Takes a bounding box in current canvas view space, accounts for stroking and effects, and
73 * computes an axis-aligned bounding box in device coordinates, then passes it to handleBBox()
74 * returns false if the draw is completely clipped out, and may safely be ignored.
75 **/
76 bool transformBounds(const SkRect& bounds, const SkPaint* paint);
78 typedef SkPictureRecord INHERITED;
79 };
81 #endif
