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strawberry-audio-player-windows-mac-linux
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Use accumulator for seeking via scrolling 

This results in much smoother experience on my touchpad.
The value of 120 was chosen as the most common for mice,
according to Qt 6 documentation.
This commit is contained in:
Eri the Switch 2024-07-21 13:14:25 +03:00 committed by Jonas Kvinge
parent 3ecf224d91
commit 3bd0331aa3
2 changed files with 13 additions and 3 deletions
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11
src/widgets/tracksliderslider.cpp
View File

@ -42,7 +42,8 @@ TrackSliderSlider::TrackSliderSlider(QWidget *parent)
#ifndef Q_OS_MACOS
popup_(new TrackSliderPopup(window())),
#endif
mouse_hover_seconds_(0) {
mouse_hover_seconds_(0),
wheel_accumulator_(0) {
setMouseTracking(true);
#ifndef Q_OS_MACOS
@ -122,10 +123,14 @@ void TrackSliderSlider::mouseMoveEvent(QMouseEvent *e) {
void TrackSliderSlider::wheelEvent(QWheelEvent *e) {
if (e->angleDelta().y() < 0) {
const int scroll_state = wheel_accumulator_ + e->angleDelta().y();
const int steps = scroll_state / WHEEL_ROTATION_TO_SEEK;
wheel_accumulator_ = scroll_state % WHEEL_ROTATION_TO_SEEK;
if (steps < 0) {
emit SeekBackward();
}
else {
else if (steps > 0) {
emit SeekForward();
}
e->accept();

5
src/widgets/tracksliderslider.h
View File

@ -66,11 +66,16 @@ class TrackSliderSlider : public QSlider {
void UpdateDeltaTime();
private:
// Units are eighths of a degree
static const int WHEEL_ROTATION_TO_SEEK = 120;
#ifndef Q_OS_MACOS
TrackSliderPopup *popup_;
#endif
int mouse_hover_seconds_;
int wheel_accumulator_;
};
#endif // TRACKSLIDERSLIDER_H