1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/core/SkBBoxRecord.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,81 @@
1.4 +
1.5 +/*
1.6 + * Copyright 2012 Google Inc.
1.7 + *
1.8 + * Use of this source code is governed by a BSD-style license that can be
1.9 + * found in the LICENSE file.
1.10 + */
1.11 +
1.12 +#ifndef SkBBoxRecord_DEFINED
1.13 +#define SkBBoxRecord_DEFINED
1.14 +
1.15 +#include "SkPictureRecord.h"
1.16 +
1.17 +/**
1.18 + * This is an abstract SkPictureRecord subclass that intercepts draw calls and computes an
1.19 + * axis-aligned bounding box for each draw that it sees, subclasses implement handleBBox()
1.20 + * which will be called every time we get a new bounding box.
1.21 + */
1.22 +class SkBBoxRecord : public SkPictureRecord {
1.23 +public:
1.24 +
1.25 + SkBBoxRecord(const SkISize& size, uint32_t recordFlags) : INHERITED(size, recordFlags) {}
1.26 + virtual ~SkBBoxRecord() { }
1.27 +
1.28 + /**
1.29 + * This is called each time we get a bounding box, it will be axis-aligned,
1.30 + * in device coordinates, and expanded to include stroking, shadows, etc.
1.31 + */
1.32 + virtual void handleBBox(const SkRect& bbox) = 0;
1.33 +
1.34 + virtual void drawOval(const SkRect& rect, const SkPaint& paint) SK_OVERRIDE;
1.35 + virtual void drawRRect(const SkRRect& rrect, const SkPaint& paint) SK_OVERRIDE;
1.36 + virtual void drawRect(const SkRect& rect, const SkPaint& paint) SK_OVERRIDE;
1.37 + virtual void drawPath(const SkPath& path, const SkPaint& paint) SK_OVERRIDE;
1.38 + virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],
1.39 + const SkPaint& paint) SK_OVERRIDE;
1.40 + virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE;
1.41 + virtual void clear(SkColor) SK_OVERRIDE;
1.42 + virtual void drawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
1.43 + const SkPaint& paint) SK_OVERRIDE;
1.44 + virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top,
1.45 + const SkPaint* paint = NULL) SK_OVERRIDE;
1.46 + virtual void drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src,
1.47 + const SkRect& dst, const SkPaint* paint,
1.48 + DrawBitmapRectFlags flags) SK_OVERRIDE;
1.49 + virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& mat,
1.50 + const SkPaint* paint) SK_OVERRIDE;
1.51 + virtual void drawBitmapNine(const SkBitmap& bitmap, const SkIRect& center,
1.52 + const SkRect& dst, const SkPaint* paint) SK_OVERRIDE;
1.53 + virtual void drawPosText(const void* text, size_t byteLength,
1.54 + const SkPoint pos[], const SkPaint& paint) SK_OVERRIDE;
1.55 + virtual void drawPosTextH(const void* text, size_t byteLength,
1.56 + const SkScalar xpos[], SkScalar constY,
1.57 + const SkPaint& paint) SK_OVERRIDE;
1.58 + virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
1.59 + const SkPaint* paint) SK_OVERRIDE;
1.60 + virtual void drawTextOnPath(const void* text, size_t byteLength,
1.61 + const SkPath& path, const SkMatrix* matrix,
1.62 + const SkPaint& paint) SK_OVERRIDE;
1.63 + virtual void drawVertices(VertexMode mode, int vertexCount,
1.64 + const SkPoint vertices[], const SkPoint texs[],
1.65 + const SkColor colors[], SkXfermode* xfer,
1.66 + const uint16_t indices[], int indexCount,
1.67 + const SkPaint& paint) SK_OVERRIDE;
1.68 + virtual void drawPicture(SkPicture& picture) SK_OVERRIDE;
1.69 +
1.70 +protected:
1.71 + virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) SK_OVERRIDE;
1.72 +
1.73 +private:
1.74 + /**
1.75 + * Takes a bounding box in current canvas view space, accounts for stroking and effects, and
1.76 + * computes an axis-aligned bounding box in device coordinates, then passes it to handleBBox()
1.77 + * returns false if the draw is completely clipped out, and may safely be ignored.
1.78 + **/
1.79 + bool transformBounds(const SkRect& bounds, const SkPaint* paint);
1.80 +
1.81 + typedef SkPictureRecord INHERITED;
1.82 +};
1.83 +
1.84 +#endif
