1 files changed, 107 insertions, 0 deletions
diff --git a/kpdf/xpdf/splash/SplashClip.h b/kpdf/xpdf/splash/SplashClip.h
new file mode 100644
index 00000000..8ae2154b
--- /dev/null
+++ b/kpdf/xpdf/splash/SplashClip.h
@@ -0,0 +1,107 @@
+//========================================================================
+//
+// SplashClip.h
+//
+//========================================================================
+
+#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(SplashCoord x0, SplashCoord y0,
+	     SplashCoord x1, SplashCoord y1,
+	     GBool antialiasA);
+
+  // 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 eo);
+
+  // Returns true if (<x>,<y>) is inside the clip.
+  GBool test(int x, int y);
+
+  // 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);
+
+  // Similar to testRect, but tests a horizontal span.
+  SplashClipResult testSpan(int spanXMin, int spanXMax, int spanY);
+
+  // Clips an anti-aliased line by setting pixels to zero.  On entry,
+  // all non-zero pixels are between <x0> and <x1>.  This function
+  // will update <x0> and <x1>.
+  void clipAALine(SplashBitmap *aaBuf, int *x0, int *x1, int y);
+
+  // Get the rectangle part of the clip region, in integer coordinates.
+  int getXMinI() { return xMinI; }
+  int getXMaxI() { return xMaxI; }
+  int getYMinI() { return yMinI; }
+  int getYMaxI() { return yMaxI; }
+
+  // Get the number of arbitrary paths used by the clip region.
+  int getNumPaths() { return length; }
+
+private:
+
+  SplashClip(SplashClip *clip);
+  void grow(int nPaths);
+
+  GBool antialias;
+  SplashCoord xMin, yMin, xMax, yMax;
+  int xMinI, yMinI, xMaxI, yMaxI;
+  SplashXPath **paths;
+  Guchar *flags;
+  SplashXPathScanner **scanners;
+  int length, size;
+};
+
+#endif