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https://github.com/RGBCube/serenity
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GScrollBar: Keep scrolling while pushing down increment/decrement button.
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parent
0ece5fee14
commit
164742f316
2 changed files with 53 additions and 3 deletions
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@ -78,6 +78,11 @@ GScrollBar::GScrollBar(Orientation orientation, GWidget* parent)
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} else {
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set_preferred_size({ 0, 15 });
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}
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m_automatic_scrolling_timer.set_interval(100);
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m_automatic_scrolling_timer.on_timeout = [this] {
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on_automatic_scrolling_timer_fired();
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};
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}
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GScrollBar::~GScrollBar()
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@ -207,16 +212,30 @@ void GScrollBar::paint_event(GPaintEvent& event)
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StylePainter::paint_button(painter, scrubber_rect(), ButtonStyle::Normal, false, m_hovered_component == Component::Scrubber);
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}
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void GScrollBar::on_automatic_scrolling_timer_fired()
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{
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if (m_automatic_scrolling_direction == AutomaticScrollingDirection::Decrement) {
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set_value(value() - m_step);
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return;
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}
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if (m_automatic_scrolling_direction == AutomaticScrollingDirection::Increment) {
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set_value(value() + m_step);
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return;
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}
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}
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void GScrollBar::mousedown_event(GMouseEvent& event)
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{
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if (event.button() != GMouseButton::Left)
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return;
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if (up_button_rect().contains(event.position())) {
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set_value(value() - m_step);
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m_automatic_scrolling_direction = AutomaticScrollingDirection::Decrement;
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set_automatic_scrolling_active(true);
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return;
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}
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if (down_button_rect().contains(event.position())) {
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set_value(value() + m_step);
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m_automatic_scrolling_direction = AutomaticScrollingDirection::Increment;
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set_automatic_scrolling_active(true);
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return;
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}
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#ifdef GUTTER_DOES_PAGEUP_PAGEDOWN
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@ -263,12 +282,24 @@ void GScrollBar::mouseup_event(GMouseEvent& event)
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{
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if (event.button() != GMouseButton::Left)
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return;
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m_automatic_scrolling_direction = AutomaticScrollingDirection::None;
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set_automatic_scrolling_active(false);
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if (!m_scrubbing)
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return;
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m_scrubbing = false;
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update();
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}
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void GScrollBar::set_automatic_scrolling_active(bool active)
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{
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if (active) {
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on_automatic_scrolling_timer_fired();
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m_automatic_scrolling_timer.start();
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} else {
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m_automatic_scrolling_timer.stop();
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}
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}
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void GScrollBar::mousemove_event(GMouseEvent& event)
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{
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auto old_hovered_component = m_hovered_component;
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@ -282,8 +313,14 @@ void GScrollBar::mousemove_event(GMouseEvent& event)
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m_hovered_component = Component::Gutter;
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else
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m_hovered_component = Component::Invalid;
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if (old_hovered_component != m_hovered_component)
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if (old_hovered_component != m_hovered_component) {
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update();
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if (m_automatic_scrolling_direction == AutomaticScrollingDirection::Decrement)
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set_automatic_scrolling_active(m_hovered_component == Component::DecrementButton);
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else if (m_automatic_scrolling_direction == AutomaticScrollingDirection::Increment)
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set_automatic_scrolling_active(m_hovered_component == Component::IncrementButton);
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}
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if (!m_scrubbing)
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return;
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float delta = orientation() == Orientation::Vertical ? (event.y() - m_scrub_origin.y()) : (event.x() - m_scrub_origin.x());
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