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tderandrtray: prevent division-by-zero corner case

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Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
pull/321/head
Michele Calgaro 7 months ago committed by TDE Gitea
parent 96114858d8
commit d521ef5d7e
1 changed files with 15 additions and 26 deletions
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41
tderandr/libtderandr.cpp
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@ -1126,31 +1126,15 @@ void KRandrSimpleAPI::applyDisplayGamma(TQPtrList<SingleScreenData> screenInfoAr
continue;
}
for (int j = 0; j < size; j++) {
if (screendata->gamma_red == 1.0)
{
gamma->red[j] = (double)j / (double)(size - 1) * 65530.0;
if (size == 1) {
gamma->red[j] = 0.0;
gamma->green[j] = 0.0;
gamma->blue[j] = 0.0;
}
else
{
gamma->red[j] = fmin(pow((double)j / (double)(size - 1), screendata->gamma_red), 1.0) * 65530.0;
}
if (screendata->gamma_green == 1.0)
{
gamma->green[j] = (double)j / (double)(size - 1) * 65530.0;
}
else
{
gamma->green[j] = fmin(pow((double)j / (double)(size - 1), screendata->gamma_green), 1.0) * 65530.0;
}
if (screendata->gamma_blue == 1.0)
{
gamma->blue[j] = (double)j / (double)(size - 1) * 65530.0;
}
else
{
gamma->blue[j] = fmin(pow((double)j / (double)(size - 1), screendata->gamma_blue), 1.0) * 65530.0;
else {
gamma->red[j] = fmin(pow((double)j / (double)(size - 1), screendata->gamma_red), 1.0) * 65535.0;
gamma->green[j] = fmin(pow((double)j / (double)(size - 1), screendata->gamma_green), 1.0) * 65535.0;
gamma->blue[j] = fmin(pow((double)j / (double)(size - 1), screendata->gamma_blue), 1.0) * 65535.0;
}
}
XRRSetCrtcGamma(randr_display, current_crtc->id, gamma);
@ -1395,8 +1379,13 @@ TQPtrList<SingleScreenData> KRandrSimpleAPI::readCurrentDisplayConfiguration() {
//int slot = 127;
int slot = 7;
int size = XRRGetCrtcGammaSize(randr_display, current_crtc->id);
if(size>0) {
XRRCrtcGamma *gammastruct = XRRGetCrtcGamma (randr_display, current_crtc->id);
XRRCrtcGamma *gammastruct = XRRGetCrtcGamma (randr_display, current_crtc->id);
if (size == 1) {
screendata->gamma_red = 0.0;
screendata->gamma_green = 0.0;
screendata->gamma_blue = 0.0;
}
else if (size > 1) {
screendata->gamma_red = log(gammastruct->red[slot]/((size-1.0)*256.0))/log(slot/(size-1.0));
screendata->gamma_green = log(gammastruct->green[slot]/((size-1.0)*256.0))/log(slot/(size-1.0));
screendata->gamma_blue = log(gammastruct->blue[slot]/((size-1.0)*256.0))/log(slot/(size-1.0));

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