3 * Copyright 2012 Google Inc.
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
9 #ifndef SkBBoxRecord_DEFINED
10 #define SkBBoxRecord_DEFINED
12 #include "SkPictureRecord.h"
13 #include "SkTDArray.h"
16 * This is an abstract SkPictureRecord subclass that intercepts draw calls and computes an
17 * axis-aligned bounding box for each draw that it sees, subclasses implement handleBBox()
18 * which will be called every time we get a new bounding box.
20 class SkBBoxRecord : public SkPictureRecord {
23 SkBBoxRecord(const SkISize& size, uint32_t recordFlags)
24 : INHERITED(size, recordFlags) {
26 virtual ~SkBBoxRecord();
29 * This is called each time we get a bounding box, it will be axis-aligned,
30 * in device coordinates, and expanded to include stroking, shadows, etc.
32 virtual void handleBBox(const SkRect& bbox) = 0;
34 virtual void drawOval(const SkRect& rect, const SkPaint& paint) SK_OVERRIDE;
35 virtual void drawRRect(const SkRRect& rrect, const SkPaint& paint) SK_OVERRIDE;
36 virtual void drawRect(const SkRect& rect, const SkPaint& paint) SK_OVERRIDE;
37 virtual void drawPath(const SkPath& path, const SkPaint& paint) SK_OVERRIDE;
38 virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],
39 const SkPaint& paint) SK_OVERRIDE;
40 virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE;
41 virtual void clear(SkColor) SK_OVERRIDE;
42 virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top,
43 const SkPaint* paint = NULL) SK_OVERRIDE;
44 virtual void drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src,
45 const SkRect& dst, const SkPaint* paint,
46 DrawBitmapRectFlags flags) SK_OVERRIDE;
47 virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& mat,
48 const SkPaint* paint) SK_OVERRIDE;
49 virtual void drawBitmapNine(const SkBitmap& bitmap, const SkIRect& center,
50 const SkRect& dst, const SkPaint* paint) SK_OVERRIDE;
51 virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
52 const SkPaint* paint) SK_OVERRIDE;
53 virtual void drawVertices(VertexMode mode, int vertexCount,
54 const SkPoint vertices[], const SkPoint texs[],
55 const SkColor colors[], SkXfermode* xfer,
56 const uint16_t indices[], int indexCount,
57 const SkPaint& paint) SK_OVERRIDE;
60 virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) SK_OVERRIDE;
61 virtual void onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
62 const SkPaint&) SK_OVERRIDE;
63 virtual void onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[],
64 const SkPaint&) SK_OVERRIDE;
65 virtual void onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[],
66 SkScalar constY, const SkPaint&) SK_OVERRIDE;
67 virtual void onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path,
68 const SkMatrix* matrix, const SkPaint&) SK_OVERRIDE;
69 virtual void onDrawPatch(const SkPoint cubics[12], const SkColor colors[4],
70 const SkPoint texCoords[4], SkXfermode* xmode,
71 const SkPaint& paint) SK_OVERRIDE;
72 virtual void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) SK_OVERRIDE;
73 virtual void willSave() SK_OVERRIDE;
74 virtual SaveLayerStrategy willSaveLayer(const SkRect*, const SkPaint*, SaveFlags) SK_OVERRIDE;
75 virtual void willRestore() SK_OVERRIDE;
79 * Takes a bounding box in current canvas view space, accounts for stroking and effects, and
80 * computes an axis-aligned bounding box in device coordinates, then passes it to handleBBox()
81 * returns false if the draw is completely clipped out, and may safely be ignored.
83 bool transformBounds(const SkRect& bounds, const SkPaint* paint);
86 * Paints from currently-active saveLayers that need to be applied to bounding boxes of all
87 * primitives drawn inside them. We own these pointers.
89 SkTDArray<const SkPaint*> fSaveStack;
91 typedef SkPictureRecord INHERITED;