summaryrefslogtreecommitdiffstats
path: root/kpdf/xpdf/splash/SplashScreen.h
diff options
context:
space:
mode:
Diffstat (limited to 'kpdf/xpdf/splash/SplashScreen.h')
-rw-r--r--kpdf/xpdf/splash/SplashScreen.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/kpdf/xpdf/splash/SplashScreen.h b/kpdf/xpdf/splash/SplashScreen.h
new file mode 100644
index 00000000..2baa9b5d
--- /dev/null
+++ b/kpdf/xpdf/splash/SplashScreen.h
@@ -0,0 +1,56 @@
+//========================================================================
+//
+// SplashScreen.h
+//
+//========================================================================
+
+#ifndef SPLASHSCREEN_H
+#define SPLASHSCREEN_H
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma interface
+#endif
+
+#include "SplashTypes.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);
+
+ // 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);
+
+private:
+
+ 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);
+
+ Guchar *mat; // threshold matrix
+ int size; // size of the threshold matrix
+ Guchar minVal; // any pixel value below minVal generates
+ // solid black
+ Guchar maxVal; // any pixel value above maxVal generates
+ // solid white
+};
+
+#endif