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Dont fade image edges, jsut covert to grayscale

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craig.p.drummond
2013-04-25 18:15:52 +00:00
committed by craig.p.drummond
parent e27b2a8bea
commit ebf2c699ba
1 changed files with 0 additions and 46 deletions
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46
widgets/textbrowser.cpp
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@@ -30,51 +30,6 @@ static int border=-1;
static int minSize=-1;
static int maxSize=-1;
static void fadeEdges(QImage &img, int edgeSize)
{
unsigned char *data=img.bits();
int width=img.width()*4;
int height=img.height();
for (int i=0; i<edgeSize; ++i) {
int alpha=((i+1.0)/(edgeSize*1.0))*255;
int offset=i*img.bytesPerLine();
for(int column=i*4; column<width; column+=4) {
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
// ARGB
data[offset+column] = alpha;
#else
// BGRA
data[offset+column+3] = alpha;
#endif
}
offset=img.bytesPerLine()*(height-1);
for(int column=i*4; column<width; column+=4) {
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
// ARGB
data[offset+column] = alpha;
#else
// BGRA
data[offset+column+3] = alpha;
#endif
}
for (int j=i; j<height; ++j) {
offset=img.bytesPerLine()*j;
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
// ARGB
data[offset+(i*4)] = alpha;
data[offset+(width-4)] = alpha;
#else
// BGRA
data[offset+3+(i*4)] = alpha;
data[offset+3+(width-4)] = alpha;
#endif
}
width-=4;
height--;
}
}
static int toGray(int r, int g, int b)
{
return (r+g+b)/3; // QColor(r, g, b).value();
@@ -140,7 +95,6 @@ void TextBrowser::setImage(const QImage &img)
}
image=image.convertToFormat(QImage::Format_ARGB32);
fadeEdges(image, border);
toGray(image);
}
viewport()->update();