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Merge pull request #5607 from rfranke/issue5599

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Fix scrolling in thumb browser under macOS, see #5599
This commit is contained in:
Beep6581
2020-01-27 12:29:24 +01:00
committed by GitHub
parent 07494b86d7 590ee199cc
commit 397b882ceb
1 changed files with 11 additions and 2 deletions
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13
rtgui/thumbbrowserbase.cc
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@@ -87,7 +87,16 @@ void ThumbBrowserBase::scroll (int direction, double deltaX, double deltaY)
}
//GDK_SCROLL_SMOOTH can come in as many events with small deltas, don't quantize these to +/-1.0 so trackpads work well
double coef;
double scroll_unit;
if (arrangement == TB_Vertical) {
scroll_unit = vscroll.get_adjustment()->get_step_increment();
} else {
scroll_unit = hscroll.get_adjustment()->get_step_increment();
}
if(direction == GDK_SCROLL_SMOOTH) {
#ifdef GDK_WINDOWING_QUARTZ
scroll_unit = 1.0;
#endif
coef = delta;
} else if (direction == GDK_SCROLL_DOWN) {
coef = +1.0;
@@ -99,7 +108,7 @@ void ThumbBrowserBase::scroll (int direction, double deltaX, double deltaY)
if (direction == GDK_SCROLL_UP || direction == GDK_SCROLL_DOWN || direction == GDK_SCROLL_SMOOTH) {
if (arrangement == TB_Vertical) {
double currValue = vscroll.get_value();
double newValue = rtengine::LIM<double>(currValue + coef * vscroll.get_adjustment()->get_step_increment(),
double newValue = rtengine::LIM<double>(currValue + coef * scroll_unit,
vscroll.get_adjustment()->get_lower (),
vscroll.get_adjustment()->get_upper());
if (newValue != currValue) {
@@ -107,7 +116,7 @@ void ThumbBrowserBase::scroll (int direction, double deltaX, double deltaY)
}
} else {
double currValue = hscroll.get_value();
double newValue = rtengine::LIM<double>(currValue + coef * hscroll.get_adjustment()->get_step_increment(),
double newValue = rtengine::LIM<double>(currValue + coef * scroll_unit,
hscroll.get_adjustment()->get_lower(),
hscroll.get_adjustment()->get_upper());
if (newValue != currValue) {