xpdf-no-select-disableHEADmaster

1 files changed, 149 insertions, 0 deletions

diff --git a/xpdf/PreScanOutputDev.h b/xpdf/PreScanOutputDev.h
new file mode 100644
index 0000000..ee21e98
--- /dev/null
+++ b/xpdf/PreScanOutputDev.h
@@ -0,0 +1,149 @@
+//========================================================================
+//
+// PreScanOutputDev.h
+//
+// Copyright 2005 Glyph & Cog, LLC
+//
+//========================================================================
+
+#ifndef PRESCANOUTPUTDEV_H
+#define PRESCANOUTPUTDEV_H
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma interface
+#endif
+
+#include "gtypes.h"
+#include "GfxState.h"
+#include "OutputDev.h"
+
+//------------------------------------------------------------------------
+// PreScanOutputDev
+//------------------------------------------------------------------------
+
+class PreScanOutputDev: public OutputDev {
+public:
+
+  // Constructor.
+  PreScanOutputDev();
+
+  // Destructor.
+  virtual ~PreScanOutputDev();
+
+  //----- 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 tilingPatternFill()?  If this returns false,
+  // tiling pattern fills will be reduced to a series of other drawing
+  // operations.
+  virtual GBool useTilingPatternFill() { 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();
+
+  //----- path painting
+  virtual void stroke(GfxState *state);
+  virtual void fill(GfxState *state);
+  virtual void eoFill(GfxState *state);
+  virtual void tilingPatternFill(GfxState *state, Gfx *gfx, Object *strRef,
+				 int paintType, int tilingType, Dict *resDict,
+				 double *mat, double *bbox,
+				 int x0, int y0, int x1, int y1,
+				 double xStep, double yStep);
+  virtual GBool shadedFill(GfxState *state, GfxShading *shading);
+
+  //----- path clipping
+  virtual void clip(GfxState *state);
+  virtual void eoClip(GfxState *state);
+
+  //----- text drawing
+  virtual void beginStringOp(GfxState *state);
+  virtual void endStringOp(GfxState *state);
+  virtual GBool beginType3Char(GfxState *state, double x, double y,
+			       double dx, double dy,
+			       CharCode code, Unicode *u, int uLen);
+  virtual void endType3Char(GfxState *state);
+
+  //----- image drawing
+  virtual void drawImageMask(GfxState *state, Object *ref, Stream *str,
+			     int width, int height, GBool invert,
+			     GBool inlineImg, GBool interpolate);
+  virtual void drawImage(GfxState *state, Object *ref, Stream *str,
+			 int width, int height, GfxImageColorMap *colorMap,
+			 int *maskColors, GBool inlineImg, GBool interpolate);
+  virtual void drawMaskedImage(GfxState *state, Object *ref, Stream *str,
+			       int width, int height,
+			       GfxImageColorMap *colorMap,
+			       Object *maskRef, Stream *maskStr,
+			       int maskWidth, int maskHeight,
+			       GBool maskInvert, GBool interpolate);
+  virtual void drawSoftMaskedImage(GfxState *state, Object *ref, Stream *str,
+				   int width, int height,
+				   GfxImageColorMap *colorMap,
+				   Object *maskRef, Stream *maskStr,
+				   int maskWidth, int maskHeight,
+				   GfxImageColorMap *maskColorMap,
+				   double *matte, GBool interpolate);
+
+  //----- transparency groups and soft masks
+  virtual GBool beginTransparencyGroup(GfxState *state, double *bbox,
+				       GfxColorSpace *blendingColorSpace,
+				       GBool isolated, GBool knockout,
+				       GBool forSoftMask);
+
+  //----- special access
+
+  // Returns true if the operations performed since the last call to
+  // clearStats() are all monochrome (black or white).
+  GBool isMonochrome() { return mono; }
+
+  // Returns true if the operations performed since the last call to
+  // clearStats() are all gray.
+  GBool isGray() { return gray; }
+
+  // Returns true if the operations performed since the last call to
+  // clearStats() included any transparency.
+  GBool usesTransparency() { return transparency; }
+
+  // Returns true if the operations performed since the last call to
+  // clearStats() included any image mask fills with a pattern color
+  // space.
+  GBool usesPatternImageMask() { return patternImgMask; }
+
+  // Returns true if the operations performed since the last call to
+  // clearStats() are all rasterizable by GDI calls in GDIOutputDev.
+  GBool isAllGDI() { return gdi; }
+
+  // Clear the stats used by the above functions.
+  void clearStats();
+
+private:
+
+  void check(GfxState *state, GfxColorSpace *colorSpace, GfxColor *color,
+	     double opacity, GfxBlendMode blendMode);
+
+  GBool mono;
+  GBool gray;
+  GBool transparency;
+  GBool patternImgMask;
+  GBool gdi;
+};
+
+#endif