1 /* 2 * Copyright 2005-2009, Stephan Aßmus <superstippi@gmx.de>. 3 * Copyright 2008, Andrej Spielmann <andrej.spielmann@seh.ox.ac.uk>. 4 * All rights reserved. Distributed under the terms of the MIT License. 5 */ 6 #ifndef AGG_TEXT_RENDERER_H 7 #define AGG_TEXT_RENDERER_H 8 9 10 #include "defines.h" 11 12 #include "FontCacheEntry.h" 13 #include "ServerFont.h" 14 #include "Transformable.h" 15 16 #include <agg_conv_curve.h> 17 #include <agg_conv_contour.h> 18 #include <agg_scanline_u.h> 19 20 21 class FontCacheReference; 22 23 class AGGTextRenderer { 24 public: 25 AGGTextRenderer( 26 renderer_subpix_type& subpixRenderer, 27 renderer_type& solidRenderer, 28 renderer_bin_type& binRenderer, 29 scanline_unpacked_type& scanline, 30 scanline_unpacked_subpix_type& subpixScanline, 31 rasterizer_subpix_type& subpixRasterizer); 32 virtual ~AGGTextRenderer(); 33 34 void SetFont(const ServerFont &font); 35 inline const ServerFont& Font() const 36 { return fFont; } 37 38 void SetHinting(bool hinting); 39 bool Hinting() const 40 { return fHinted; } 41 42 void SetAntialiasing(bool antialiasing); 43 bool Antialiasing() const 44 { return fAntialias; } 45 46 void SetKerning(bool kerning); 47 bool Kerning() const 48 { return fKerning; } 49 50 BRect RenderString(const char* utf8String, 51 uint32 length, const BPoint& baseLine, 52 const BRect& clippingFrame, bool dryRun, 53 BPoint* nextCharPos, 54 const escapement_delta* delta, 55 FontCacheReference* cacheReference); 56 57 private: 58 59 class StringRenderer; 60 friend class StringRenderer; 61 62 // Pipeline to process the vectors glyph paths (curves + contour) 63 FontCacheEntry::GlyphPathAdapter fPathAdaptor; 64 FontCacheEntry::GlyphGray8Adapter fGray8Adaptor; 65 FontCacheEntry::GlyphGray8Scanline fGray8Scanline; 66 FontCacheEntry::GlyphMonoAdapter fMonoAdaptor; 67 FontCacheEntry::GlyphMonoScanline fMonoScanline; 68 FontCacheEntry::SubpixAdapter fSubpixAdaptor; 69 70 FontCacheEntry::CurveConverter fCurves; 71 FontCacheEntry::ContourConverter fContour; 72 73 renderer_type& fSolidRenderer; 74 renderer_bin_type& fBinRenderer; 75 renderer_subpix_type& fSubpixRenderer; 76 scanline_unpacked_type& fScanline; 77 scanline_unpacked_subpix_type& fSubpixScanline; 78 rasterizer_subpix_type& fSubpixRasterizer; 79 rasterizer_type fRasterizer; 80 // NOTE: the object has it's own rasterizer object 81 // since it might be using a different gamma setting 82 // to support non-anti-aliased text rendering 83 84 ServerFont fFont; 85 bool fHinted; 86 // is glyph hinting active? 87 bool fAntialias; 88 bool fKerning; 89 Transformable fEmbeddedTransformation; 90 // rotated or sheared font? 91 }; 92 93 #endif // AGG_TEXT_RENDERER_H 94