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GUI: natural ctrl-scroll zoom in sample editor!

This commit is contained in:
tildearrow 2022-11-23 04:03:03 -05:00
parent 201f3ff0f8
commit 7841c3d0b6
1 changed files with 7 additions and 0 deletions
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7
src/gui/sampleEdit.cpp
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@ -965,11 +965,18 @@ void FurnaceGUI::drawSampleEdit() {
double zoomPercent=100.0/sampleZoom;
if (wheelY>0) {
for (int i=0; i<wheelY; i++) {
double oldArea=round(rectSize.x*100.0/zoomPercent);
zoomPercent+=zoomPercent/8.0;
double increment=fabs(oldArea-(rectSize.x*100.0/zoomPercent))*((ImGui::GetMousePos().x-rectMin.x)/rectSize.x);
samplePos+=increment;
}
} else {
for (int i=0; i<-wheelY; i++) {
double oldArea=round(rectSize.x*100.0/zoomPercent);
zoomPercent-=zoomPercent/8.0;
double increment=fabs(oldArea-(rectSize.x*100.0/zoomPercent))*((ImGui::GetMousePos().x-rectMin.x)/rectSize.x);
samplePos-=increment;
if (samplePos<0) samplePos=0;
}
}
if (zoomPercent>10000.0) zoomPercent=10000.0;