gfx/skia/trunk/src/gpu/GrRectanizer.h@6474c204b198 (annotated)
gfx/skia/trunk/src/gpu/GrRectanizer.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright 2010 Google Inc. |
| michael@0 | 3 | * |
| michael@0 | 4 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 5 | * found in the LICENSE file. |
| michael@0 | 6 | */ |
| michael@0 | 7 | |
| michael@0 | 8 | #ifndef GrRectanizer_DEFINED |
| michael@0 | 9 | #define GrRectanizer_DEFINED |
| michael@0 | 10 | |
| michael@0 | 11 | #include "GrPoint.h" |
| michael@0 | 12 | |
| michael@0 | 13 | class GrRectanizerPurgeListener { |
| michael@0 | 14 | public: |
| michael@0 | 15 | virtual ~GrRectanizerPurgeListener() {} |
| michael@0 | 16 | |
| michael@0 | 17 | virtual void notifyPurgeStrip(void*, int yCoord) = 0; |
| michael@0 | 18 | }; |
| michael@0 | 19 | |
| michael@0 | 20 | class GrRectanizer { |
| michael@0 | 21 | public: |
| michael@0 | 22 | GrRectanizer(int width, int height) : fWidth(width), fHeight(height) { |
| michael@0 | 23 | SkASSERT(width >= 0); |
| michael@0 | 24 | SkASSERT(height >= 0); |
| michael@0 | 25 | } |
| michael@0 | 26 | |
| michael@0 | 27 | virtual ~GrRectanizer() {} |
| michael@0 | 28 | |
| michael@0 | 29 | virtual void reset() = 0; |
| michael@0 | 30 | |
| michael@0 | 31 | int width() const { return fWidth; } |
| michael@0 | 32 | int height() const { return fHeight; } |
| michael@0 | 33 | |
| michael@0 | 34 | virtual bool addRect(int width, int height, GrIPoint16* loc) = 0; |
| michael@0 | 35 | virtual float percentFull() const = 0; |
| michael@0 | 36 | |
| michael@0 | 37 | // return the Y-coordinate of a strip that should be purged, given height |
| michael@0 | 38 | // i.e. return the oldest such strip, or some other criteria. Return -1 |
| michael@0 | 39 | // if there is no candidate |
| michael@0 | 40 | virtual int stripToPurge(int height) const = 0; |
| michael@0 | 41 | virtual void purgeStripAtY(int yCoord) = 0; |
| michael@0 | 42 | |
| michael@0 | 43 | /** |
| michael@0 | 44 | * Our factory, which returns the subclass du jour |
| michael@0 | 45 | */ |
| michael@0 | 46 | static GrRectanizer* Factory(int width, int height); |
| michael@0 | 47 | |
| michael@0 | 48 | private: |
| michael@0 | 49 | int fWidth; |
| michael@0 | 50 | int fHeight; |
| michael@0 | 51 | }; |
| michael@0 | 52 | |
| michael@0 | 53 | #endif |
