1 files changed, 87 insertions, 0 deletions
diff --git a/kpdf/xpdf/splash/SplashXPathScanner.h b/kpdf/xpdf/splash/SplashXPathScanner.h
new file mode 100644
index 00000000..ab02fcc9
--- /dev/null
+++ b/kpdf/xpdf/splash/SplashXPathScanner.h
@@ -0,0 +1,87 @@
+//========================================================================
+//
+// SplashXPathScanner.h
+//
+//========================================================================
+
+#ifndef SPLASHXPATHSCANNER_H
+#define SPLASHXPATHSCANNER_H
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma interface
+#endif
+
+#include "SplashTypes.h"
+
+class SplashXPath;
+class SplashBitmap;
+struct SplashIntersect;
+
+//------------------------------------------------------------------------
+// SplashXPathScanner
+//------------------------------------------------------------------------
+
+class SplashXPathScanner {
+public:
+
+  // Create a new SplashXPathScanner object.  <xPathA> must be sorted.
+  SplashXPathScanner(SplashXPath *xPathA, GBool eoA);
+
+  ~SplashXPathScanner();
+
+  // Return the path's bounding box.
+  void getBBox(int *xMinA, int *yMinA, int *xMaxA, int *yMaxA)
+    { *xMinA = xMin; *yMinA = yMin; *xMaxA = xMax; *yMaxA = yMax; }
+
+  // Return the path's bounding box.
+  void getBBoxAA(int *xMinA, int *yMinA, int *xMaxA, int *yMaxA);
+
+  // Return the min/max x values for the span at <y>.
+  void getSpanBounds(int y, int *spanXMin, int *spanXMax);
+
+  // Returns true if (<x>,<y>) is inside the path.
+  GBool test(int x, int y);
+
+  // Returns true if the entire span ([<x0>,<x1>], <y>) is inside the
+  // path.
+  GBool testSpan(int x0, int x1, int y);
+
+  // Returns the next span inside the path at <y>.  If <y> is
+  // different than the previous call to getNextSpan, this returns the
+  // first span at <y>; otherwise it returns the next span (relative
+  // to the previous call to getNextSpan).  Returns false if there are
+  // no more spans at <y>.
+  GBool getNextSpan(int y, int *x0, int *x1);
+
+  // Renders one anti-aliased line into <aaBuf>.  Returns the min and
+  // max x coordinates with non-zero pixels in <x0> and <x1>.
+  void renderAALine(SplashBitmap *aaBuf, int *x0, int *x1, int y);
+
+  // 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);
+
+private:
+
+  void computeIntersections(int y);
+
+  SplashXPath *xPath;
+  GBool eo;
+  int xMin, yMin, xMax, yMax;
+
+  int interY;			// current y value
+  int interIdx;			// current index into <inter> - used by
+				//   getNextSpan 
+  int interCount;		// current EO/NZWN counter - used by
+				//   getNextSpan
+  int xPathIdx;			// current index into <xPath> - used by
+				//   computeIntersections
+  SplashIntersect *inter;	// intersections array for <interY>
+  int interLen;			// number of intersections in <inter>
+  int interSize;		// size of the <inter> array
+};
+
+#endif