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Diffstat (limited to 'Build/source/libs/poppler/poppler-0.29.0/splash/SplashScreen.h')
-rw-r--r-- | Build/source/libs/poppler/poppler-0.29.0/splash/SplashScreen.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/Build/source/libs/poppler/poppler-0.29.0/splash/SplashScreen.h b/Build/source/libs/poppler/poppler-0.29.0/splash/SplashScreen.h new file mode 100644 index 00000000000..a7fc4559148 --- /dev/null +++ b/Build/source/libs/poppler/poppler-0.29.0/splash/SplashScreen.h @@ -0,0 +1,80 @@ +//======================================================================== +// +// SplashScreen.h +// +//======================================================================== + +//======================================================================== +// +// Modified under the Poppler project - http://poppler.freedesktop.org +// +// All changes made under the Poppler project to this file are licensed +// under GPL version 2 or later +// +// Copyright (C) 2009 Albert Astals Cid <aacid@kde.org> +// +// To see a description of the changes please see the Changelog file that +// came with your tarball or type make ChangeLog if you are building from git +// +//======================================================================== + +#ifndef SPLASHSCREEN_H +#define SPLASHSCREEN_H + +#ifdef USE_GCC_PRAGMAS +#pragma interface +#endif + +#include "SplashTypes.h" + +#include <stdlib.h> + +//------------------------------------------------------------------------ +// SplashScreen +//------------------------------------------------------------------------ + +class SplashScreen { +public: + + SplashScreen(SplashScreenParams *params); + SplashScreen(SplashScreen *screen); + ~SplashScreen(); + + SplashScreen *copy() { return new SplashScreen(this); } + + // Return the computed pixel value (0=black, 1=white) for the gray + // level <value> at (<x>, <y>). + int test(int x, int y, Guchar value) { + int xx, yy; + if (mat == NULL) createMatrix(); + xx = x & sizeM1; + yy = y & sizeM1; + return value < mat[(yy << log2Size) + xx] ? 0 : 1; + } + + // Returns true if value is above the white threshold or below the + // black threshold, i.e., if the corresponding halftone will be + // solid white or black. + GBool isStatic(Guchar value) { if (mat == NULL) createMatrix(); return value < minVal || value >= maxVal; } + +private: + void createMatrix(); + + void buildDispersedMatrix(int i, int j, int val, + int delta, int offset); + void buildClusteredMatrix(); + int distance(int x0, int y0, int x1, int y1); + void buildSCDMatrix(int r); + + SplashScreenParams *screenParams; // params to create the other members + Guchar *mat; // threshold matrix + int size; // size of the threshold matrix + int sizeM1; // size - 1 + int log2Size; // log2(size) + Guchar minVal; // any pixel value below minVal generates + // solid black + Guchar maxVal; // any pixel value above maxVal generates + // solid white +}; + +#endif |