juce/source/src/gui/graphics/contexts/juce_LowLevelGraphicsPostScriptRenderer.h

   1 /*
   2   ==============================================================================
   3
   4    This file is part of the JUCE library - "Jules' Utility Class Extensions"
   5    Copyright 2004-11 by Raw Material Software Ltd.
   6
   7   ------------------------------------------------------------------------------
   8
   9    JUCE can be redistributed and/or modified under the terms of the GNU General
  10    Public License (Version 2), as published by the Free Software Foundation.
  11    A copy of the license is included in the JUCE distribution, or can be found
  12    online at www.gnu.org/licenses.
  13
  14    JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
  15    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  16    A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  17
  18   ------------------------------------------------------------------------------
  19
  20    To release a closed-source product which uses JUCE, commercial licenses are
  21    available: visit www.rawmaterialsoftware.com/juce for more information.
  22
  23   ==============================================================================
  24 */
  25
  26 #ifndef __JUCE_LOWLEVELGRAPHICSPOSTSCRIPTRENDERER_JUCEHEADER__
  27 #define __JUCE_LOWLEVELGRAPHICSPOSTSCRIPTRENDERER_JUCEHEADER__
  28
  29 #include "juce_LowLevelGraphicsContext.h"
  30
  31
  32 //==============================================================================
  33 /**
  34     An implementation of LowLevelGraphicsContext that turns the drawing operations
  35     into a PostScript document.
  36
  37 */
  38 class JUCE_API  LowLevelGraphicsPostScriptRenderer    : public LowLevelGraphicsContext
  39 {
  40 public:
  41     //==============================================================================
  42     LowLevelGraphicsPostScriptRenderer (OutputStream& resultingPostScript,
  43                                         const String& documentTitle,
  44                                         int totalWidth,
  45                                         int totalHeight);
  46
  47     ~LowLevelGraphicsPostScriptRenderer();
  48
  49     //==============================================================================
  50     bool isVectorDevice() const;
  51     void setOrigin (int x, int y);
  52     void addTransform (const AffineTransform& transform);
  53     float getScaleFactor();
  54
  55     bool clipToRectangle (const Rectangle<int>& r);
  56     bool clipToRectangleList (const RectangleList& clipRegion);
  57     void excludeClipRectangle (const Rectangle<int>& r);
  58     void clipToPath (const Path& path, const AffineTransform& transform);
  59     void clipToImageAlpha (const Image& sourceImage, const AffineTransform& transform);
  60
  61     void saveState();
  62     void restoreState();
  63
  64     void beginTransparencyLayer (float opacity);
  65     void endTransparencyLayer();
  66
  67     bool clipRegionIntersects (const Rectangle<int>& r);
  68     const Rectangle<int> getClipBounds() const;
  69     bool isClipEmpty() const;
  70
  71     //==============================================================================
  72     void setFill (const FillType& fillType);
  73     void setOpacity (float opacity);
  74     void setInterpolationQuality (Graphics::ResamplingQuality quality);
  75
  76     //==============================================================================
  77     void fillRect (const Rectangle<int>& r, bool replaceExistingContents);
  78     void fillPath (const Path& path, const AffineTransform& transform);
  79
  80     void drawImage (const Image& sourceImage, const AffineTransform& transform, bool fillEntireClipAsTiles);
  81
  82     void drawLine (const Line <float>& line);
  83
  84     void drawVerticalLine (int x, float top, float bottom);
  85     void drawHorizontalLine (int x, float top, float bottom);
  86
  87     //==============================================================================
  88     Font getFont();
  89     void setFont (const Font& newFont);
  90     void drawGlyph (int glyphNumber, const AffineTransform& transform);
  91
  92 protected:
  93     //==============================================================================
  94     OutputStream& out;
  95     int totalWidth, totalHeight;
  96     bool needToClip;
  97     Colour lastColour;
  98
  99     struct SavedState
 100     {
 101         SavedState();
 102         ~SavedState();
 103
 104         RectangleList clip;
 105         int xOffset, yOffset;
 106         FillType fillType;
 107         Font font;
 108
 109     private:
 110         SavedState& operator= (const SavedState&);
 111     };
 112
 113     OwnedArray <SavedState> stateStack;
 114
 115     void writeClip();
 116     void writeColour (const Colour& colour);
 117     void writePath (const Path& path) const;
 118     void writeXY (float x, float y) const;
 119     void writeTransform (const AffineTransform& trans) const;
 120     void writeImage (const Image& im, int sx, int sy, int maxW, int maxH) const;
 121
 122     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (LowLevelGraphicsPostScriptRenderer);
 123 };
 124
 125
 126
 127 #endif   // __JUCE_LOWLEVELGRAPHICSPOSTSCRIPTRENDERER_JUCEHEADER__