1 files changed, 126 insertions, 0 deletions
diff --git a/Build/source/libs/xpdf/xpdf-3.04/splash/SplashClip.h b/Build/source/libs/xpdf/xpdf-3.04/splash/SplashClip.h
new file mode 100644
index 00000000000..42986222976
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+++ b/Build/source/libs/xpdf/xpdf-3.04/splash/SplashClip.h
@@ -0,0 +1,126 @@
+//========================================================================
+//
+// SplashClip.h
+//
+// Copyright 2003-2013 Glyph & Cog, LLC
+//
+//========================================================================
+
+#ifndef SPLASHCLIP_H
+#define SPLASHCLIP_H
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma interface
+#endif
+
+#include "SplashTypes.h"
+#include "SplashMath.h"
+
+class SplashPath;
+class SplashXPath;
+class SplashXPathScanner;
+class SplashBitmap;
+
+//------------------------------------------------------------------------
+
+enum SplashClipResult {
+  splashClipAllInside,
+  splashClipAllOutside,
+  splashClipPartial
+};
+
+//------------------------------------------------------------------------
+// SplashClip
+//------------------------------------------------------------------------
+
+class SplashClip {
+public:
+
+  // Create a clip, for the given rectangle.
+  SplashClip(int hardXMinA, int hardYMinA,
+	     int hardXMaxA, int hardYMaxA);
+
+  // Copy a clip.
+  SplashClip *copy() { return new SplashClip(this); }
+
+  ~SplashClip();
+
+  // Reset the clip to a rectangle.
+  void resetToRect(SplashCoord x0, SplashCoord y0,
+		   SplashCoord x1, SplashCoord y1);
+
+  // Intersect the clip with a rectangle.
+  SplashError clipToRect(SplashCoord x0, SplashCoord y0,
+			 SplashCoord x1, SplashCoord y1);
+
+  // Interesect the clip with <path>.
+  SplashError clipToPath(SplashPath *path, SplashCoord *matrix,
+			 SplashCoord flatness, GBool eoA);
+
+  // Tests a rectangle against the clipping region.  Returns one of:
+  //   - splashClipAllInside if the entire rectangle is inside the
+  //     clipping region, i.e., all pixels in the rectangle are
+  //     visible
+  //   - splashClipAllOutside if the entire rectangle is outside the
+  //     clipping region, i.e., all the pixels in the rectangle are
+  //     clipped
+  //   - splashClipPartial if the rectangle is part inside and part
+  //     outside the clipping region
+  SplashClipResult testRect(int rectXMin, int rectYMin,
+			    int rectXMax, int rectYMax,
+			    GBool strokeAdjust);
+
+  // Clip a scan line.  Modifies line[] by multiplying with clipping
+  // shape values for one scan line: ([x0, x1], y).
+  void clipSpan(Guchar *line, int y, int x0, int x1,
+		GBool strokeAdjust);
+
+  // Like clipSpan(), but uses the values 0 and 255 only.
+  // Returns true if there are any non-zero values in the result
+  // (i.e., returns false if the entire line is clipped out).
+  GBool clipSpanBinary(Guchar *line, int y, int x0, int x1,
+		       GBool strokeAdjust);
+
+  // Get the rectangle part of the clip region.
+  SplashCoord getXMin() { return xMin; }
+  SplashCoord getXMax() { return xMax; }
+  SplashCoord getYMin() { return yMin; }
+  SplashCoord getYMax() { return yMax; }
+
+  // Get the rectangle part of the clip region, in integer coordinates.
+  int getXMinI(GBool strokeAdjust);
+  int getXMaxI(GBool strokeAdjust);
+  int getYMinI(GBool strokeAdjust);
+  int getYMaxI(GBool strokeAdjust);
+
+  // Get the number of arbitrary paths used by the clip region.
+  int getNumPaths() { return length; }
+
+private:
+
+  SplashClip(SplashClip *clip);
+  void grow(int nPaths);
+  void updateIntBounds(GBool strokeAdjust);
+
+  int hardXMin, hardYMin,	// coordinates cannot fall outside of
+      hardXMax, hardYMax;	//   [hardXMin, hardXMax), [hardYMin, hardYMax)
+
+  SplashCoord xMin, yMin,	// current clip bounding rectangle
+              xMax, yMax;	//   (these coordinates may be adjusted if
+				//   stroke adjustment is enabled)
+
+  int xMinI, yMinI, xMaxI, yMaxI;
+  GBool intBoundsValid;		// true if xMinI, etc. are valid
+  GBool intBoundsStrokeAdjust;	// value of strokeAdjust used to compute
+				//   xMinI, etc.
+
+  SplashXPath **paths;
+  Guchar *eo;
+  SplashXPathScanner **scanners;
+  int length, size;
+  Guchar *buf;
+};
+
+#endif