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added autoscrolling

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This commit is contained in:
itsmattkc
2018-11-20 22:45:00 +11:00
parent e785586df2
commit 3c6bdcc6f2
7 changed files with 107 additions and 16 deletions
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panels/timeline.cpp
+43 -14
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@@ -415,21 +415,51 @@ bool Timeline::focused() {
return (sequence != NULL && (ui->headers->hasFocus() || ui->video_area->hasFocus() || ui->audio_area->hasFocus()));
}
bool Timeline::center_scroll_to_playhead() {
// returns true is the scroll was changed, false if not
int target_scroll = qMin(ui->horizontalScrollBar->maximum(), qMax(0, getScreenPointFromFrame(zoom, sequence->playhead)-(ui->editAreas->width()>>1)));
if (target_scroll == ui->horizontalScrollBar->value()) {
return false;
}
ui->horizontalScrollBar->setValue(target_scroll);
return true;
}
void Timeline::repaint_timeline() {
ui->headers->update();
ui->video_area->update();
ui->audio_area->update();
bool draw = true;
if (sequence != NULL) {
long sequenceEndFrame = sequence->getEndFrame();
if (sequence != NULL
&& !ui->horizontalScrollBar->isSliderDown()
&& panel_sequence_viewer->playing) {
// auto scroll
if (config.autoscroll == AUTOSCROLL_PAGE_SCROLL) {
if (panel_timeline->getTimelineScreenPointFromFrame(sequence->playhead) > (ui->editAreas->width() - ui->videoScrollbar->width())) {
ui->horizontalScrollBar->setValue(getScreenPointFromFrame(zoom, sequence->playhead));
draw = false;
}
} else if (config.autoscroll == AUTOSCROLL_SMOOTH_SCROLL) {
if (center_scroll_to_playhead()) {
draw = false;
}
}
}
ui->horizontalScrollBar->setMaximum(qMax(0, getScreenPointFromFrame(zoom, sequenceEndFrame) - (ui->editAreas->width()/2)));
if (draw) {
ui->headers->update();
ui->video_area->update();
ui->audio_area->update();
if (last_frame != sequence->playhead) {
ui->audio_monitor->update();
last_frame = sequence->playhead;
}
}
if (sequence != NULL) {
long sequenceEndFrame = sequence->getEndFrame();
ui->horizontalScrollBar->setMaximum(qMax(0, getScreenPointFromFrame(zoom, sequenceEndFrame) - (ui->editAreas->width()/2)));
if (last_frame != sequence->playhead) {
ui->audio_monitor->update();
last_frame = sequence->playhead;
}
}
}
}
void Timeline::select_all() {
@@ -540,9 +570,8 @@ void Timeline::set_zoom_value(double v) {
ui->headers->update_zoom(zoom);
repaint_timeline();
// TODO find a way to gradually move towards target_scroll instead of just setting it?
int target_scroll = getScreenPointFromFrame(zoom, sequence->playhead)-(ui->editAreas->width()>>1);
ui->horizontalScrollBar->setValue(target_scroll);
// TODO find a way to gradually move towards target_scroll instead of just centering it?
center_scroll_to_playhead();
}
void Timeline::set_zoom(bool in) {