| |
| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkBBoxRecord_DEFINED |
| #define SkBBoxRecord_DEFINED |
| |
| #include "SkPictureRecord.h" |
| |
| /** |
| * This is an abstract SkPictureRecord subclass that intercepts draw calls and computes an |
| * axis-aligned bounding box for each draw that it sees, subclasses implement handleBBox() |
| * which will be called every time we get a new bounding box. |
| */ |
| class SkBBoxRecord : public SkPictureRecord { |
| public: |
| |
| SkBBoxRecord(const SkISize& size, uint32_t recordFlags) : INHERITED(size, recordFlags) {} |
| virtual ~SkBBoxRecord() { } |
| |
| /** |
| * This is called each time we get a bounding box, it will be axis-aligned, |
| * in device coordinates, and expanded to include stroking, shadows, etc. |
| */ |
| virtual void handleBBox(const SkRect& bbox) = 0; |
| |
| virtual void drawOval(const SkRect& rect, const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawRRect(const SkRRect& rrect, const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawRect(const SkRect& rect, const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawPath(const SkPath& path, const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[], |
| const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE; |
| virtual void clear(SkColor) SK_OVERRIDE; |
| virtual void drawText(const void* text, size_t byteLength, SkScalar x, SkScalar y, |
| const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top, |
| const SkPaint* paint = NULL) SK_OVERRIDE; |
| virtual void drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src, |
| const SkRect& dst, const SkPaint* paint, |
| DrawBitmapRectFlags flags) SK_OVERRIDE; |
| virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& mat, |
| const SkPaint* paint) SK_OVERRIDE; |
| virtual void drawBitmapNine(const SkBitmap& bitmap, const SkIRect& center, |
| const SkRect& dst, const SkPaint* paint) SK_OVERRIDE; |
| virtual void drawPosText(const void* text, size_t byteLength, |
| const SkPoint pos[], const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawPosTextH(const void* text, size_t byteLength, |
| const SkScalar xpos[], SkScalar constY, |
| const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawSprite(const SkBitmap& bitmap, int left, int top, |
| const SkPaint* paint) SK_OVERRIDE; |
| virtual void drawTextOnPath(const void* text, size_t byteLength, |
| const SkPath& path, const SkMatrix* matrix, |
| const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawVertices(VertexMode mode, int vertexCount, |
| const SkPoint vertices[], const SkPoint texs[], |
| const SkColor colors[], SkXfermode* xfer, |
| const uint16_t indices[], int indexCount, |
| const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawPicture(SkPicture& picture) SK_OVERRIDE; |
| |
| protected: |
| virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) SK_OVERRIDE; |
| |
| private: |
| /** |
| * Takes a bounding box in current canvas view space, accounts for stroking and effects, and |
| * computes an axis-aligned bounding box in device coordinates, then passes it to handleBBox() |
| * returns false if the draw is completely clipped out, and may safely be ignored. |
| **/ |
| bool transformBounds(const SkRect& bounds, const SkPaint* paint); |
| |
| typedef SkPictureRecord INHERITED; |
| }; |
| |
| #endif |