/* calling the QPainter stuff. */
void ColorMapWidget::paintEvent(QPaintEvent *) {
QFont f(QApplication::font());
double res;
QPainter p;
QString tmpDisplayedText;
int i,h,yoff,ysub,cidx;
int lscale;
double scale;
lscale = (int) floor(log10(dmax));
scale = pow(10,lscale);
f.setPixelSize(11);
p.begin(this);
p.setFont(f);
QFontMetrics fm(p.fontMetrics());
yoff = fm.lineSpacing();
ysub = fm.ascent()/2;
tmpDisplayedText.sprintf("x 1 e %i",lscale);
p.setPen(Qt::white);
p.drawText(10,yoff,tmpDisplayedText);
h = height()-3*yoff;
h = h/CBAR_STEP*CBAR_STEP;
yoff *= 2;
if (cmap_len != h) {
free_colormap(colormap);
cmap_len = h;
if (colorState == HSV)
colormap = colormap_hsv(cmap_len);
else if (colorState == GRAYSCALE)
colormap = colormap_gs(cmap_len);
else
fprintf(stderr, "Invalid color space specified\n");
doHistogram(scaleState);
}
p.drawText(40, yoff+ysub, tmpDisplayedText.sprintf( "%.3f",dmax/scale));
for(i=0; i<N_LABELS-1; i++) {
res = dmax - (i+1)*(dmax - dmin)/(double)(N_LABELS-1);
p.drawText(40, yoff+ysub+(int)((i+1)*(h/(double)(N_LABELS-1))),
tmpDisplayedText.sprintf( "%.3f",res/scale));
}
for(i=0; i<cmap_len; i++) {
cidx = cmap_len-1-i;
p.setPen(QColor((int)(255*colormap[cidx][0]), (int)(255*colormap[cidx][1]),
(int)(255*colormap[cidx][2])));
p.drawLine(10, yoff+i, 10+histogram[cidx/CBAR_STEP], yoff+i);
}
p.end();
}
void ColorMapWidget::setColorMap(int newSpace) {
if (colorState != newSpace) {
colorState = (colorSpace)newSpace;
free_colormap(colormap);
if (colorState == HSV)
colormap = colormap_hsv(cmap_len);
else if (colorState == GRAYSCALE)
colormap = colormap_gs(cmap_len);
else
fprintf(stderr, "Invalid color space specified\n");
doHistogram(scaleState);
}
}
// slot to change the colormap
void Error3DViewerWidget::setColorMap(int newSpace)
{
if (newSpace != csp) {
csp = (ColorMapWidget::colorSpace)newSpace;
free(colormap);
if (csp == ColorMapWidget::HSV)
colormap = colormap_hsv(CMAP_LENGTH);
else if (csp == ColorMapWidget::GRAYSCALE)
colormap = colormap_gs(CMAP_LENGTH);
else
fprintf(stderr, "Invalid color space specified\n");
if (error_mode != SAMPLE_ERROR) {
makeCurrent();
// display wait cursor while rebuilding list (useful for n=1 only)
QApplication::setOverrideCursor(Qt::waitCursor);
rebuildList();
QApplication::restoreOverrideCursor();
} else {
genErrorTextures();
}
updateGL();
}
}