Renaming of files in preparation for code style tools.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit 14d0fbe96c6abdb9da80e99953aec672f999948c)

1 files changed, 429 insertions, 0 deletions

diff --git a/kpdf/xpdf/splash/SplashXPathScanner.cpp b/kpdf/xpdf/splash/SplashXPathScanner.cpp
new file mode 100644
index 00000000..8c7d505a
--- /dev/null
+++ b/kpdf/xpdf/splash/SplashXPathScanner.cpp
@@ -0,0 +1,429 @@
+//========================================================================
+//
+// SplashXPathScanner.cpp
+//
+//========================================================================
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma implementation
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include "gmem.h"
+#include "SplashMath.h"
+#include "SplashXPath.h"
+#include "SplashBitmap.h"
+#include "SplashXPathScanner.h"
+
+//------------------------------------------------------------------------
+
+struct SplashIntersect {
+  int x0, x1;			// intersection of segment with [y, y+1)
+  int count;			// EO/NZWN counter increment
+};
+
+static int cmpIntersect(const void *p0, const void *p1) {
+  return ((SplashIntersect *)p0)->x0 - ((SplashIntersect *)p1)->x0;
+}
+
+//------------------------------------------------------------------------
+// SplashXPathScanner
+//------------------------------------------------------------------------
+
+SplashXPathScanner::SplashXPathScanner(SplashXPath *xPathA, GBool eoA) {
+  SplashXPathSeg *seg;
+  SplashCoord xMinFP, yMinFP, xMaxFP, yMaxFP;
+  int i;
+
+  xPath = xPathA;
+  eo = eoA;
+
+  // compute the bbox
+  if (xPath->length == 0) {
+    xMin = yMin = 1;
+    xMax = yMax = 0;
+  } else {
+    seg = &xPath->segs[0];
+    if (seg->x0 <= seg->x1) {
+      xMinFP = seg->x0;
+      xMaxFP = seg->x1;
+    } else {
+      xMinFP = seg->x1;
+      xMaxFP = seg->x0;
+    }
+    if (seg->flags & splashXPathFlip) {
+      yMinFP = seg->y1;
+      yMaxFP = seg->y0;
+    } else {
+      yMinFP = seg->y0;
+      yMaxFP = seg->y1;
+    }
+    for (i = 1; i < xPath->length; ++i) {
+      seg = &xPath->segs[i];
+      if (seg->x0 < xMinFP) {
+	xMinFP = seg->x0;
+      } else if (seg->x0 > xMaxFP) {
+	xMaxFP = seg->x0;
+      }
+      if (seg->x1 < xMinFP) {
+	xMinFP = seg->x1;
+      } else if (seg->x1 > xMaxFP) {
+	xMaxFP = seg->x1;
+      }
+      if (seg->flags & splashXPathFlip) {
+	if (seg->y0 > yMaxFP) {
+	  yMaxFP = seg->y0;
+	}
+      } else {
+	if (seg->y1 > yMaxFP) {
+	  yMaxFP = seg->y1;
+	}
+      }
+    }
+    xMin = splashFloor(xMinFP);
+    xMax = splashFloor(xMaxFP);
+    yMin = splashFloor(yMinFP);
+    yMax = splashFloor(yMaxFP);
+  }
+
+  interY = yMin - 1;
+  xPathIdx = 0;
+  inter = NULL;
+  interLen = interSize = 0;
+}
+
+SplashXPathScanner::~SplashXPathScanner() {
+  gfree(inter);
+}
+
+void SplashXPathScanner::getBBoxAA(int *xMinA, int *yMinA,
+				   int *xMaxA, int *yMaxA) {
+  *xMinA = xMin / splashAASize;
+  *yMinA = yMin / splashAASize;
+  *xMaxA = xMax / splashAASize;
+  *yMaxA = yMax / splashAASize;
+}
+
+void SplashXPathScanner::getSpanBounds(int y, int *spanXMin, int *spanXMax) {
+  if (interY != y) {
+    computeIntersections(y);
+  }
+  if (interLen > 0) {
+    *spanXMin = inter[0].x0;
+    *spanXMax = inter[interLen - 1].x1;
+  } else {
+    *spanXMin = xMax + 1;
+    *spanXMax = xMax;
+  }
+}
+
+GBool SplashXPathScanner::test(int x, int y) {
+  int count, i;
+
+  if (interY != y) {
+    computeIntersections(y);
+  }
+  count = 0;
+  for (i = 0; i < interLen && inter[i].x0 <= x; ++i) {
+    if (x <= inter[i].x1) {
+      return gTrue;
+    }
+    count += inter[i].count;
+  }
+  return eo ? (count & 1) : (count != 0);
+}
+
+GBool SplashXPathScanner::testSpan(int x0, int x1, int y) {
+  int count, xx1, i;
+
+  if (interY != y) {
+    computeIntersections(y);
+  }
+
+  count = 0;
+  for (i = 0; i < interLen && inter[i].x1 < x0; ++i) {
+    count += inter[i].count;
+  }
+
+  // invariant: the subspan [x0,xx1] is inside the path
+  xx1 = x0 - 1;
+  while (xx1 < x1) {
+    if (i >= interLen) {
+      return gFalse;
+    }
+    if (inter[i].x0 > xx1 + 1 &&
+	!(eo ? (count & 1) : (count != 0))) {
+      return gFalse;
+    }
+    if (inter[i].x1 > xx1) {
+      xx1 = inter[i].x1;
+    }
+    count += inter[i].count;
+    ++i;
+  }
+
+  return gTrue;
+}
+
+GBool SplashXPathScanner::getNextSpan(int y, int *x0, int *x1) {
+  int xx0, xx1;
+
+  if (interY != y) {
+    computeIntersections(y);
+  }
+  if (interIdx >= interLen) {
+    return gFalse;
+  }
+  xx0 = inter[interIdx].x0;
+  xx1 = inter[interIdx].x1;
+  interCount += inter[interIdx].count;
+  ++interIdx;
+  while (interIdx < interLen &&
+	 (inter[interIdx].x0 <= xx1 ||
+	  (eo ? (interCount & 1) : (interCount != 0)))) {
+    if (inter[interIdx].x1 > xx1) {
+      xx1 = inter[interIdx].x1;
+    }
+    interCount += inter[interIdx].count;
+    ++interIdx;
+  }
+  *x0 = xx0;
+  *x1 = xx1;
+  return gTrue;
+}
+
+void SplashXPathScanner::computeIntersections(int y) {
+  SplashCoord xSegMin, xSegMax, ySegMin, ySegMax, xx0, xx1;
+  SplashXPathSeg *seg;
+  int i, j;
+
+  // find the first segment that intersects [y, y+1)
+  i = (y >= interY) ? xPathIdx : 0;
+  while (i < xPath->length &&
+	 xPath->segs[i].y0 < y && xPath->segs[i].y1 < y) {
+    ++i;
+  }
+  xPathIdx = i;
+
+  // find all of the segments that intersect [y, y+1) and create an
+  // Intersect element for each one
+  interLen = 0;
+  for (j = i; j < xPath->length; ++j) {
+    seg = &xPath->segs[j];
+    if (seg->flags & splashXPathFlip) {
+      ySegMin = seg->y1;
+      ySegMax = seg->y0;
+    } else {
+      ySegMin = seg->y0;
+      ySegMax = seg->y1;
+    }
+
+    // ensure that:      ySegMin < y+1
+    //              y <= ySegMax
+    if (ySegMin >= y + 1) {
+      break;
+    }
+    if (ySegMax < y) {
+      continue;
+    }
+
+    if (interLen == interSize) {
+      if (interSize == 0) {
+	interSize = 16;
+      } else {
+	interSize *= 2;
+      }
+      inter = (SplashIntersect *)greallocn(inter, interSize,
+					   sizeof(SplashIntersect));
+    }
+
+    if (seg->flags & splashXPathHoriz) {
+      xx0 = seg->x0;
+      xx1 = seg->x1;
+    } else if (seg->flags & splashXPathVert) {
+      xx0 = xx1 = seg->x0;
+    } else {
+      if (seg->x0 < seg->x1) {
+	xSegMin = seg->x0;
+	xSegMax = seg->x1;
+      } else {
+	xSegMin = seg->x1;
+	xSegMax = seg->x0;
+      }
+      // intersection with top edge
+      xx0 = seg->x0 + ((SplashCoord)y - seg->y0) * seg->dxdy;
+      // intersection with bottom edge
+      xx1 = seg->x0 + ((SplashCoord)y + 1 - seg->y0) * seg->dxdy;
+      // the segment may not actually extend to the top and/or bottom edges
+      if (xx0 < xSegMin) {
+	xx0 = xSegMin;
+      } else if (xx0 > xSegMax) {
+	xx0 = xSegMax;
+      }
+      if (xx1 < xSegMin) {
+	xx1 = xSegMin;
+      } else if (xx1 > xSegMax) {
+	xx1 = xSegMax;
+      }
+    }
+    if (xx0 < xx1) {
+      inter[interLen].x0 = splashFloor(xx0);
+      inter[interLen].x1 = splashFloor(xx1);
+    } else {
+      inter[interLen].x0 = splashFloor(xx1);
+      inter[interLen].x1 = splashFloor(xx0);
+    }
+    if (ySegMin <= y &&
+	(SplashCoord)y < ySegMax &&
+	!(seg->flags & splashXPathHoriz)) {
+      inter[interLen].count = eo ? 1
+	                         : (seg->flags & splashXPathFlip) ? 1 : -1;
+    } else {
+      inter[interLen].count = 0;
+    }
+    ++interLen;
+  }
+
+  qsort(inter, interLen, sizeof(SplashIntersect), &cmpIntersect);
+
+  interY = y;
+  interIdx = 0;
+  interCount = 0;
+}
+
+void SplashXPathScanner::renderAALine(SplashBitmap *aaBuf,
+				      int *x0, int *x1, int y) {
+  int xx0, xx1, xx, xxMin, xxMax, yy;
+  Guchar mask;
+  SplashColorPtr p;
+
+  memset(aaBuf->getDataPtr(), 0, aaBuf->getRowSize() * aaBuf->getHeight());
+  xxMin = aaBuf->getWidth();
+  xxMax = -1;
+  for (yy = 0; yy < splashAASize; ++yy) {
+    computeIntersections(splashAASize * y + yy);
+    while (interIdx < interLen) {
+      xx0 = inter[interIdx].x0;
+      xx1 = inter[interIdx].x1;
+      interCount += inter[interIdx].count;
+      ++interIdx;
+      while (interIdx < interLen &&
+	     (inter[interIdx].x0 <= xx1 ||
+	      (eo ? (interCount & 1) : (interCount != 0)))) {
+	if (inter[interIdx].x1 > xx1) {
+	  xx1 = inter[interIdx].x1;
+	}
+	interCount += inter[interIdx].count;
+	++interIdx;
+      }
+      if (xx0 < 0) {
+	xx0 = 0;
+      }
+      ++xx1;
+      if (xx1 > aaBuf->getWidth()) {
+	xx1 = aaBuf->getWidth();
+      }
+      // set [xx0, xx1) to 1
+      if (xx0 < xx1) {
+	xx = xx0;
+	p = aaBuf->getDataPtr() + yy * aaBuf->getRowSize() + (xx >> 3);
+	if (xx & 7) {
+	  mask = 0xff >> (xx & 7);
+	  if ((xx & ~7) == (xx1 & ~7)) {
+	    mask &= (Guchar)(0xff00 >> (xx1 & 7));
+	  }
+	  *p++ |= mask;
+	  xx = (xx & ~7) + 8;
+	}
+	for (; xx + 7 < xx1; xx += 8) {
+	  *p++ |= 0xff;
+	}
+	if (xx < xx1) {
+	  *p |= (Guchar)(0xff00 >> (xx1 & 7));
+	}
+      }
+      if (xx0 < xxMin) {
+	xxMin = xx0;
+      }
+      if (xx1 > xxMax) {
+	xxMax = xx1;
+      }
+    }
+  }
+  *x0 = xxMin / splashAASize;
+  *x1 = (xxMax - 1) / splashAASize;
+}
+
+void SplashXPathScanner::clipAALine(SplashBitmap *aaBuf,
+				    int *x0, int *x1, int y) {
+  int xx0, xx1, xx, yy;
+  Guchar mask;
+  SplashColorPtr p;
+
+  for (yy = 0; yy < splashAASize; ++yy) {
+    xx = *x0 * splashAASize;
+    computeIntersections(splashAASize * y + yy);
+    while (interIdx < interLen && xx < (*x1 + 1) * splashAASize) {
+      xx0 = inter[interIdx].x0;
+      xx1 = inter[interIdx].x1;
+      interCount += inter[interIdx].count;
+      ++interIdx;
+      while (interIdx < interLen &&
+	     (inter[interIdx].x0 <= xx1 ||
+	      (eo ? (interCount & 1) : (interCount != 0)))) {
+	if (inter[interIdx].x1 > xx1) {
+	  xx1 = inter[interIdx].x1;
+	}
+	interCount += inter[interIdx].count;
+	++interIdx;
+      }
+      if (xx0 > aaBuf->getWidth()) {
+	xx0 = aaBuf->getWidth();
+      }
+      // set [xx, xx0) to 0
+      if (xx < xx0) {
+	p = aaBuf->getDataPtr() + yy * aaBuf->getRowSize() + (xx >> 3);
+	if (xx & 7) {
+	  mask = (Guchar)(0xff00 >> (xx & 7));
+	  if ((xx & ~7) == (xx0 & ~7)) {
+	    mask |= 0xff >> (xx0 & 7);
+	  }
+	  *p++ &= mask;
+	  xx = (xx & ~7) + 8;
+	}
+	for (; xx + 7 <= xx0; xx += 8) {
+	  *p++ = 0x00;
+	}
+	if (xx < xx0) {
+	  *p &= 0xff >> (xx0 & 7);
+	}
+      }
+      if (xx1 >= xx) {
+	xx = xx1 + 1;
+      }
+    }
+    xx0 = (*x1 + 1) * splashAASize;
+    if (xx0 > aaBuf->getWidth()) xx0 = aaBuf->getWidth();
+    // set [xx, xx0) to 0
+    if (xx < xx0) {
+      p = aaBuf->getDataPtr() + yy * aaBuf->getRowSize() + (xx >> 3);
+      if (xx & 7) {
+	mask = (Guchar)(0xff00 >> (xx & 7));
+	if ((xx & ~7) == (xx0 & ~7)) {
+	  mask &= 0xff >> (xx0 & 7);
+	}
+	*p++ &= mask;
+	xx = (xx & ~7) + 8;
+      }
+      for (; xx + 7 <= xx0; xx += 8) {
+	*p++ = 0x00;
+      }
+      if (xx < xx0) {
+	*p &= 0xff >> (xx0 & 7);
+      }
+    }
+  }
+}