gfx/skia/trunk/src/gpu/GrDistanceFieldTextContext.h@b8a032363ba2 (annotated)
gfx/skia/trunk/src/gpu/GrDistanceFieldTextContext.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright 2013 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 GrDistanceFieldTextContext_DEFINED |
| michael@0 | 9 | #define GrDistanceFieldTextContext_DEFINED |
| michael@0 | 10 | |
| michael@0 | 11 | #include "GrTextContext.h" |
| michael@0 | 12 | |
| michael@0 | 13 | class GrTextStrike; |
| michael@0 | 14 | |
| michael@0 | 15 | /* |
| michael@0 | 16 | * This class implements GrTextContext using distance field fonts |
| michael@0 | 17 | */ |
| michael@0 | 18 | class GrDistanceFieldTextContext : public GrTextContext { |
| michael@0 | 19 | public: |
| michael@0 | 20 | GrDistanceFieldTextContext(GrContext*, const SkDeviceProperties&); |
| michael@0 | 21 | virtual ~GrDistanceFieldTextContext(); |
| michael@0 | 22 | |
| michael@0 | 23 | virtual void drawText(const GrPaint&, const SkPaint&, const char text[], size_t byteLength, |
| michael@0 | 24 | SkScalar x, SkScalar y) SK_OVERRIDE; |
| michael@0 | 25 | virtual void drawPosText(const GrPaint&, const SkPaint&, |
| michael@0 | 26 | const char text[], size_t byteLength, |
| michael@0 | 27 | const SkScalar pos[], SkScalar constY, |
| michael@0 | 28 | int scalarsPerPosition) SK_OVERRIDE; |
| michael@0 | 29 | |
| michael@0 | 30 | virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE; |
| michael@0 | 31 | |
| michael@0 | 32 | private: |
| michael@0 | 33 | GrTextStrike* fStrike; |
| michael@0 | 34 | SkScalar fTextRatio; |
| michael@0 | 35 | |
| michael@0 | 36 | void init(const GrPaint&, const SkPaint&); |
| michael@0 | 37 | void drawPackedGlyph(GrGlyph::PackedID, GrFixed left, GrFixed top, GrFontScaler*); |
| michael@0 | 38 | void flushGlyphs(); // automatically called by destructor |
| michael@0 | 39 | void finish(); |
| michael@0 | 40 | |
| michael@0 | 41 | enum { |
| michael@0 | 42 | kMinRequestedGlyphs = 1, |
| michael@0 | 43 | kDefaultRequestedGlyphs = 64, |
| michael@0 | 44 | kMinRequestedVerts = kMinRequestedGlyphs * 4, |
| michael@0 | 45 | kDefaultRequestedVerts = kDefaultRequestedGlyphs * 4, |
| michael@0 | 46 | }; |
| michael@0 | 47 | |
| michael@0 | 48 | SkPoint* fVertices; |
| michael@0 | 49 | int32_t fMaxVertices; |
| michael@0 | 50 | GrTexture* fCurrTexture; |
| michael@0 | 51 | int fCurrVertex; |
| michael@0 | 52 | }; |
| michael@0 | 53 | |
| michael@0 | 54 | #endif |
