1 files changed, 92 insertions, 0 deletions
diff --git a/pdf/splash/SplashXPath.h b/pdf/splash/SplashXPath.h
new file mode 100644
index 0000000..a9fe9a2
--- /dev/null
+++ b/pdf/splash/SplashXPath.h
@@ -0,0 +1,92 @@
+//========================================================================
+//
+// SplashXPath.h
+//
+//========================================================================
+
+#ifndef SPLASHXPATH_H
+#define SPLASHXPATH_H
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma interface
+#endif
+
+#include "SplashTypes.h"
+
+class SplashPath;
+
+//------------------------------------------------------------------------
+// SplashXPathSeg
+//------------------------------------------------------------------------
+
+struct SplashXPathSeg {
+  SplashCoord x0, y0;		// first endpoint
+  SplashCoord x1, y1;		// second endpoint
+  SplashCoord dxdy;		// slope: delta-x / delta-y
+  SplashCoord dydx;		// slope: delta-y / delta-x
+  Guint flags;
+};
+
+#define splashXPathFirst   0x01	// first segment of a subpath
+#define splashXPathLast    0x02	// last segment of a subpath
+#define splashXPathEnd0    0x04	// first endpoint is end of an open subpath
+#define splashXPathEnd1    0x08 // second endpoint is end of an open subpath
+#define splashXPathHoriz   0x10 // segment is vertical (y0 == y1)
+				//   (dxdy is undef)
+#define splashXPathVert    0x20 // segment is horizontal (x0 == x1)
+				//   (dydx is undef)
+#define splashXPathFlip	   0x40	// y0 > y1
+
+//------------------------------------------------------------------------
+// SplashXPath
+//------------------------------------------------------------------------
+
+class SplashXPath {
+public:
+
+  // Expands (converts to segments) and flattens (converts curves to
+  // lines) <path>.  If <closeSubpaths> is true, closes all open
+  // subpaths.
+  SplashXPath(SplashPath *path, SplashCoord flatness,
+	      GBool closeSubpaths);
+
+  // Copy an expanded path.
+  SplashXPath *copy() { return new SplashXPath(this); }
+
+  ~SplashXPath();
+
+  // Sort by upper coordinate (lower y), in y-major order.
+  void sort();
+
+private:
+
+  SplashXPath();
+  SplashXPath(SplashXPath *xPath);
+  void grow(int nSegs);
+  void addCurve(SplashCoord x0, SplashCoord y0,
+		SplashCoord x1, SplashCoord y1,
+		SplashCoord x2, SplashCoord y2,
+		SplashCoord x3, SplashCoord y3,
+		SplashCoord flatness,
+		GBool first, GBool last, GBool end0, GBool end1);
+  void addArc(SplashCoord x0, SplashCoord y0,
+	      SplashCoord x1, SplashCoord y1,
+	      SplashCoord xc, SplashCoord yc,
+	      SplashCoord r, int quad,
+	      SplashCoord flatness,
+	      GBool first, GBool last, GBool end0, GBool end1);
+  void addSegment(SplashCoord x0, SplashCoord y0,
+		  SplashCoord x1, SplashCoord y1,
+		  GBool first, GBool last, GBool end0, GBool end1);
+
+  SplashXPathSeg *segs;
+  int length, size;		// length and size of segs array
+
+  friend class SplashXPathScanner;
+  friend class SplashClip;
+  friend class Splash;
+};
+
+#endif