1/* 2 * Copyright 2006-2007, Haiku. 3 * Distributed under the terms of the MIT License. 4 * 5 * Authors: 6 * Stephan Aßmus <superstippi@gmx.de> 7 */ 8#ifndef ICON_RENDERER_H 9#define ICON_RENDERER_H 10 11 12#include <agg_gamma_lut.h> 13#include <agg_pixfmt_rgba.h> 14#include <agg_rasterizer_compound_aa.h> 15#include <agg_rendering_buffer.h> 16#include <agg_renderer_scanline.h> 17#include <agg_scanline_bin.h> 18#include <agg_scanline_u.h> 19#include <agg_span_allocator.h> 20#include <agg_trans_affine.h> 21 22#include "IconBuild.h" 23 24 25class BBitmap; 26class BRect; 27 28 29_BEGIN_ICON_NAMESPACE 30 31 32class Icon; 33 34typedef agg::gamma_lut 35 <agg::int8u, agg::int8u> GammaTable; 36 37typedef agg::rendering_buffer RenderingBuffer; 38typedef agg::pixfmt_bgra32 PixelFormat; 39typedef agg::pixfmt_bgra32_pre PixelFormatPre; 40typedef agg::renderer_base<PixelFormat> BaseRenderer; 41typedef agg::renderer_base<PixelFormatPre> BaseRendererPre; 42 43typedef agg::scanline_u8 Scanline; 44typedef agg::scanline_bin BinaryScanline; 45typedef agg::span_allocator<agg::rgba8> SpanAllocator; 46typedef agg::rasterizer_compound_aa 47 <agg::rasterizer_sl_clip_dbl> CompoundRasterizer; 48 49typedef agg::trans_affine Transformation; 50 51class IconRenderer { 52 public: 53 IconRenderer(BBitmap* bitmap); 54 virtual ~IconRenderer(); 55 56 void SetIcon(const Icon* icon); 57 58 void Render(); 59 void Render(const BRect& area); 60 61 void SetScale(double scale); 62 void SetBackground(const BBitmap* background); 63 // background is not copied, 64 // ownership stays with the caller 65 // colorspace and size need to 66 // be the same as bitmap passed 67 // to constructor 68 void SetBackground(const agg::rgba8& color); 69 // used when no background bitmap 70 // is set 71 72 const _ICON_NAMESPACE GammaTable& GammaTable() const 73 { return fGammaTable; } 74 75 void Demultiply(); 76 77 private: 78 class StyleHandler; 79 80 void _Render(const BRect& area); 81 void _CommitRenderPass(StyleHandler& styleHandler, 82 bool reset = true); 83 84 BBitmap* fBitmap; 85 const BBitmap* fBackground; 86 agg::rgba8 fBackgroundColor; 87 const Icon* fIcon; 88 89 _ICON_NAMESPACE GammaTable fGammaTable; 90 91 RenderingBuffer fRenderingBuffer; 92 PixelFormat fPixelFormat; 93 PixelFormatPre fPixelFormatPre; 94 BaseRenderer fBaseRenderer; 95 BaseRendererPre fBaseRendererPre; 96 97 Scanline fScanline; 98 BinaryScanline fBinaryScanline; 99 SpanAllocator fSpanAllocator; 100 101 CompoundRasterizer fRasterizer; 102 103 Transformation fGlobalTransform; 104}; 105 106 107_END_ICON_NAMESPACE 108 109 110#endif // ICON_RENDERER_H 111