diff options
Diffstat (limited to 'pdf/splash/SplashClip.cc')
| -rw-r--r-- | pdf/splash/SplashClip.cc | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/pdf/splash/SplashClip.cc b/pdf/splash/SplashClip.cc deleted file mode 100644 index 4c70c03..0000000 --- a/pdf/splash/SplashClip.cc +++ /dev/null @@ -1,270 +0,0 @@ -//======================================================================== -// -// SplashClip.cc -// -//======================================================================== - -#include <aconf.h> - -#ifdef USE_GCC_PRAGMAS -#pragma implementation -#endif - -#include <stdlib.h> -#include <string.h> -#include "gmem.h" -#include "SplashErrorCodes.h" -#include "SplashMath.h" -#include "SplashPath.h" -#include "SplashXPath.h" -#include "SplashXPathScanner.h" -#include "SplashClip.h" - -//------------------------------------------------------------------------ -// SplashClip.flags -//------------------------------------------------------------------------ - -#define splashClipEO 0x01 // use even-odd rule - -//------------------------------------------------------------------------ -// SplashClip -//------------------------------------------------------------------------ - -SplashClip::SplashClip(SplashCoord x0, SplashCoord y0, - SplashCoord x1, SplashCoord y1) { - if (x0 < x1) { - xMin = splashFloor(x0); - xMax = splashFloor(x1); - } else { - xMin = splashFloor(x1); - xMax = splashFloor(x0); - } - if (y0 < y1) { - yMin = splashFloor(y0); - yMax = splashFloor(y1); - } else { - yMin = splashFloor(y1); - yMax = splashFloor(y0); - } - paths = NULL; - flags = NULL; - scanners = NULL; - length = size = 0; -} - -SplashClip::SplashClip(SplashClip *clip) { - int i; - - xMin = clip->xMin; - yMin = clip->yMin; - xMax = clip->xMax; - yMax = clip->yMax; - length = clip->length; - size = clip->size; - paths = (SplashXPath **)gmalloc(size * sizeof(SplashXPath *)); - flags = (Guchar *)gmalloc(size * sizeof(Guchar)); - scanners = (SplashXPathScanner **) - gmalloc(size * sizeof(SplashXPathScanner *)); - for (i = 0; i < length; ++i) { - paths[i] = clip->paths[i]->copy(); - flags[i] = clip->flags[i]; - scanners[i] = new SplashXPathScanner(paths[i], flags[i] & splashClipEO); - } -} - -SplashClip::~SplashClip() { - int i; - - for (i = 0; i < length; ++i) { - delete paths[i]; - delete scanners[i]; - } - gfree(paths); - gfree(flags); - gfree(scanners); -} - -void SplashClip::grow(int nPaths) { - if (length + nPaths > size) { - if (size == 0) { - size = 32; - } - while (size < length + nPaths) { - size *= 2; - } - paths = (SplashXPath **)grealloc(paths, size * sizeof(SplashXPath *)); - flags = (Guchar *)grealloc(flags, size * sizeof(Guchar)); - scanners = (SplashXPathScanner **) - grealloc(scanners, size * sizeof(SplashXPathScanner *)); - } -} - -void SplashClip::resetToRect(SplashCoord x0, SplashCoord y0, - SplashCoord x1, SplashCoord y1) { - int i; - - for (i = 0; i < length; ++i) { - delete paths[i]; - delete scanners[i]; - } - gfree(paths); - gfree(flags); - gfree(scanners); - paths = NULL; - flags = NULL; - scanners = NULL; - length = size = 0; - - if (x0 < x1) { - xMin = splashFloor(x0); - xMax = splashFloor(x1); - } else { - xMin = splashFloor(x1); - xMax = splashFloor(x0); - } - if (y0 < y1) { - yMin = splashFloor(y0); - yMax = splashFloor(y1); - } else { - yMin = splashFloor(y1); - yMax = splashFloor(y0); - } -} - -SplashError SplashClip::clipToRect(SplashCoord x0, SplashCoord y0, - SplashCoord x1, SplashCoord y1) { - int x0I, y0I, x1I, y1I; - - if (x0 < x1) { - x0I = splashFloor(x0); - x1I = splashFloor(x1); - } else { - x0I = splashFloor(x1); - x1I = splashFloor(x0); - } - if (x0I > xMin) { - xMin = x0I; - } - if (x1I < xMax) { - xMax = x1I; - } - if (y0 < y1) { - y0I = splashFloor(y0); - y1I = splashFloor(y1); - } else { - y0I = splashFloor(y1); - y1I = splashFloor(y0); - } - if (y0I > yMin) { - yMin = y0I; - } - if (y1I < yMax) { - yMax = y1I; - } - return splashOk; -} - -SplashError SplashClip::clipToPath(SplashPath *path, SplashCoord flatness, - GBool eo) { - SplashXPath *xPath; - - xPath = new SplashXPath(path, flatness, gTrue); - - // check for an empty path - if (xPath->length == 0) { - xMax = xMin - 1; - yMax = yMin - 1; - delete xPath; - - // check for a rectangle - } else if (xPath->length == 4 && - ((xPath->segs[0].x0 == xPath->segs[0].x1 && - xPath->segs[0].x0 == xPath->segs[1].x0 && - xPath->segs[0].x0 == xPath->segs[3].x1 && - xPath->segs[2].x0 == xPath->segs[2].x1 && - xPath->segs[2].x0 == xPath->segs[1].x1 && - xPath->segs[2].x0 == xPath->segs[3].x0 && - xPath->segs[1].y0 == xPath->segs[1].y1 && - xPath->segs[1].y0 == xPath->segs[0].y1 && - xPath->segs[1].y0 == xPath->segs[2].y0 && - xPath->segs[3].y0 == xPath->segs[3].y1 && - xPath->segs[3].y0 == xPath->segs[0].y0 && - xPath->segs[3].y0 == xPath->segs[2].y1) || - (xPath->segs[0].y0 == xPath->segs[0].y1 && - xPath->segs[0].y0 == xPath->segs[1].y0 && - xPath->segs[0].y0 == xPath->segs[3].y1 && - xPath->segs[2].y0 == xPath->segs[2].y1 && - xPath->segs[2].y0 == xPath->segs[1].y1 && - xPath->segs[2].y0 == xPath->segs[3].y0 && - xPath->segs[1].x0 == xPath->segs[1].x1 && - xPath->segs[1].x0 == xPath->segs[0].x1 && - xPath->segs[1].x0 == xPath->segs[2].x0 && - xPath->segs[3].x0 == xPath->segs[3].x1 && - xPath->segs[3].x0 == xPath->segs[0].x0 && - xPath->segs[3].x0 == xPath->segs[2].x1))) { - clipToRect(xPath->segs[0].x0, xPath->segs[0].y0, - xPath->segs[2].x0, xPath->segs[2].y0); - delete xPath; - - } else { - grow(1); - xPath->sort(); - paths[length] = xPath; - flags[length] = eo ? splashClipEO : 0; - scanners[length] = new SplashXPathScanner(xPath, eo); - ++length; - } - - return splashOk; -} - -GBool SplashClip::test(int x, int y) { - int i; - - // check the rectangle - if (x < xMin || x > xMax || y < yMin || y > yMax) { - return gFalse; - } - - // check the paths - for (i = 0; i < length; ++i) { - if (!scanners[i]->test(x, y)) { - return gFalse; - } - } - - return gTrue; -} - -SplashClipResult SplashClip::testRect(int rectXMin, int rectYMin, - int rectXMax, int rectYMax) { - if (rectXMax < xMin || rectXMin > xMax || - rectYMax < yMin || rectYMin > yMax) { - return splashClipAllOutside; - } - if (rectXMin >= xMin && rectXMax <= xMax && - rectYMin >= yMin && rectYMax <= yMax && - length == 0) { - return splashClipAllInside; - } - return splashClipPartial; -} - -SplashClipResult SplashClip::testSpan(int spanXMin, int spanXMax, int spanY) { - int i; - - if (spanXMax < xMin || spanXMin > xMax || - spanY < yMin || spanY > yMax) { - return splashClipAllOutside; - } - if (!(spanXMin >= xMin && spanXMax <= xMax && - spanY >= yMin && spanY <= yMax)) { - return splashClipPartial; - } - for (i = 0; i < length; ++i) { - if (!scanners[i]->testSpan(xMin, xMax, spanY)) { - return splashClipPartial; - } - } - return splashClipAllInside; -} |