Web   ·   Wiki   ·   Activities   ·   Blog   ·   Lists   ·   Chat   ·   Meeting   ·   Bugs   ·   Git   ·   Translate   ·   Archive   ·   People   ·   Donate
summaryrefslogtreecommitdiffstats
path: root/pdf/xpdf/SplashOutputDev.h
blob: b2ecfea17c06f01a21ac5a285c79e311a597369f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
//========================================================================
//
// SplashOutputDev.h
//
// Copyright 2003 Glyph & Cog, LLC
//
//========================================================================

#ifndef SPLASHOUTPUTDEV_H
#define SPLASHOUTPUTDEV_H

#include <aconf.h>

#ifdef USE_GCC_PRAGMAS
#pragma interface
#endif

#include "gtypes.h"
#include "SplashTypes.h"
#include "xpdfconfig.h"
#include "OutputDev.h"

class GfxState;
class GfxPath;
class Gfx8BitFont;
class SplashBitmap;
class Splash;
class SplashPath;
class SplashPattern;
class SplashFontEngine;
class SplashFont;
class T3FontCache;
class XRef;
struct T3FontCacheTag;
struct T3GlyphStack;
struct GfxRGB;

//------------------------------------------------------------------------

// number of Type 3 fonts to cache
#define splashOutT3FontCacheSize 8

//------------------------------------------------------------------------
// SplashOutputDev
//------------------------------------------------------------------------

class SplashOutputDev: public OutputDev {
public:

  // Constructor.
  SplashOutputDev(SplashColorMode colorModeA, GBool reverseVideoA,
		  SplashColor paperColorA);

  // Destructor.
  virtual ~SplashOutputDev();

  //----- get info about output device

  // Does this device use upside-down coordinates?
  // (Upside-down means (0,0) is the top left corner of the page.)
  virtual GBool upsideDown() { return gTrue; }

  // Does this device use drawChar() or drawString()?
  virtual GBool useDrawChar() { return gTrue; }

  // Does this device use beginType3Char/endType3Char?  Otherwise,
  // text in Type 3 fonts will be drawn with drawChar/drawString.
  virtual GBool interpretType3Chars() { return gTrue; }

  //----- initialization and control

  // Start a page.
  virtual void startPage(int pageNum, GfxState *state);

  // End a page.
  virtual void endPage();

  //----- link borders
  virtual void drawLink(Link *link, Catalog *catalog);

  //----- save/restore graphics state
  virtual void saveState(GfxState *state);
  virtual void restoreState(GfxState *state);

  //----- update graphics state
  virtual void updateAll(GfxState *state);
  virtual void updateCTM(GfxState *state, double m11, double m12,
			 double m21, double m22, double m31, double m32);
  virtual void updateLineDash(GfxState *state);
  virtual void updateFlatness(GfxState *state);
  virtual void updateLineJoin(GfxState *state);
  virtual void updateLineCap(GfxState *state);
  virtual void updateMiterLimit(GfxState *state);
  virtual void updateLineWidth(GfxState *state);
  virtual void updateFillColor(GfxState *state);
  virtual void updateStrokeColor(GfxState *state);

  //----- update text state
  virtual void updateFont(GfxState *state);

  //----- path painting
  virtual void stroke(GfxState *state);
  virtual void fill(GfxState *state);
  virtual void eoFill(GfxState *state);

  //----- path clipping
  virtual void clip(GfxState *state);
  virtual void eoClip(GfxState *state);

  //----- text drawing
  virtual void drawChar(GfxState *state, double x, double y,
			double dx, double dy,
			double originX, double originY,
			CharCode code, Unicode *u, int uLen);
  virtual GBool beginType3Char(GfxState *state, double x, double y,
			       double dx, double dy,
			       CharCode code, Unicode *u, int uLen);
  virtual void endType3Char(GfxState *state);
  virtual void endTextObject(GfxState *state);

  //----- image drawing
  virtual void drawImageMask(GfxState *state, Object *ref, Stream *str,
			     int width, int height, GBool invert,
			     GBool inlineImg);
  virtual void drawImage(GfxState *state, Object *ref, Stream *str,
			 int width, int height, GfxImageColorMap *colorMap,
			 int *maskColors, GBool inlineImg);

  //----- Type 3 font operators
  virtual void type3D0(GfxState *state, double wx, double wy);
  virtual void type3D1(GfxState *state, double wx, double wy,
		       double llx, double lly, double urx, double ury);

  //----- special access

  // Called to indicate that a new PDF document has been loaded.
  void startDoc(XRef *xrefA);
 
  GBool isReverseVideo() { return reverseVideo; }

  // Get the bitmap and its size.
  SplashBitmap *getBitmap() { return bitmap; }
  int getBitmapWidth();
  int getBitmapHeight();

  // Get the Splash object.
  Splash *getSplash() { return splash; }

  // XOR a rectangular region in the bitmap with <pattern>.  <pattern>
  // is passed to Splash::setFillPattern, so it should not be used
  // after calling this function.
  void xorRectangle(int x0, int y0, int x1, int y1, SplashPattern *pattern);

  // Set the Splash fill color.
  void setFillColor(int r, int g, int b);

  // Get a font object for a Base-14 font, using the Latin-1 encoding.
  SplashFont *getFont(GString *name, double *mat);

  void setUnderlayCbk(void (*cbk)(void *data), void *data)
    { underlayCbk = cbk; underlayCbkData = data; }

private:

  SplashPattern *getColor(double gray, GfxRGB *rgb);
  SplashPath *convertPath(GfxState *state, GfxPath *path);
  void drawType3Glyph(T3FontCache *t3Font,
		      T3FontCacheTag *tag, Guchar *data,
		      double x, double y);
  static GBool imageMaskSrc(void *data, SplashMono1 *pixel);
  static GBool imageSrc(void *data, SplashColor *pixel, Guchar *alpha);

  SplashColorMode colorMode;
  GBool reverseVideo;		// reverse video mode
  SplashColor paperColor;	// paper color

  XRef *xref;			// xref table for current document

  SplashBitmap *bitmap;
  Splash *splash;
  SplashFontEngine *fontEngine;

  T3FontCache *			// Type 3 font cache
    t3FontCache[splashOutT3FontCacheSize];
  int nT3Fonts;			// number of valid entries in t3FontCache
  T3GlyphStack *t3GlyphStack;	// Type 3 glyph context stack

  SplashFont *font;		// current font
  GBool needFontUpdate;		// set when the font needs to be updated
  SplashPath *textClipPath;	// clipping path built with text object

  void (*underlayCbk)(void *data);
  void *underlayCbkData;
};

#endif