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*fix* removed warnings

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*fix* removed unneeded code (backwards compatibility to tint2-0.6 and unneccesary XSetWindowsBackground)
*fix* better heuristicMask algorithm



git-svn-id: http://tint2.googlecode.com/svn/trunk@363 121b4492-b84c-0410-8b4c-0d4edfb3f3cc
This commit is contained in:
Andreas.Fink85
2010-01-18 21:11:05 +00:00
parent fc1ebc04b6
commit a22041ce09
4 changed files with 20 additions and 97 deletions
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24
src/util/common.c
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@@ -241,15 +241,27 @@ void adjust_asb(DATA32 *data, int w, int h, int alpha, float satur, float bright
void createHeuristicMask(DATA32* data, int w, int h)
{
// first we need to find the mask color, therefore we check all 4 edge pixel and take the color which
// appears most often (we only need to check three edges, the 4th is implicitly clear)
unsigned int topLeft = data[0], topRight = data[w-1], bottomLeft = data[w*h-w], bottomRight = data[w*h-1];
int max = (topLeft == topRight) + (topLeft == bottomLeft) + (topLeft == bottomRight);
int maskPos = 0;
if ( max < (topRight == topLeft) + (topRight == bottomLeft) + (topRight == bottomRight) ) {
max = (topRight == topLeft) + (topRight == bottomLeft) + (topRight == bottomRight);
maskPos = w-1;
}
if ( max < (bottomLeft == topRight) + (bottomLeft == topLeft) + (bottomLeft == bottomRight) )
maskPos = w*h-w;
// now mask out every pixel which has the same color as the edge pixels
unsigned char* udata = (unsigned char*)data;
int b = udata[0];
int g = udata[1];
int r = udata[2];
unsigned char b = udata[4*maskPos];
unsigned char g = udata[4*maskPos+1];
unsigned char r = udata[4*maskPos+1];
int i;
for (i=0; i<h*w; ++i) {
if ( abs(b-*udata)<5 && abs(g-*(udata+1))<5 && abs(r-*(udata+2))<5 ) {
*(udata+3) = 0;
}
if ( b-udata[0] == 0 && g-udata[1] == 0 && r-udata[2] == 0 )
udata[3] = 0;
udata += 4;
}
}