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Emit slider's drag_started signal before the first value change
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@ -33,7 +33,7 @@
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</signal>
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<signal name="drag_started">
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<description>
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Emitted when dragging is started.
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Emitted when dragging is started. This is emitted before the corresponding [signal Range.value_changed] signal.
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</description>
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</signal>
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</signals>
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@ -64,6 +64,8 @@ void Slider::gui_input(const Ref<InputEvent> &p_event) {
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}
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grab.pos = orientation == VERTICAL ? mb->get_position().y : mb->get_position().x;
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grab.value_before_dragging = get_as_ratio();
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emit_signal(SNAME("drag_started"));
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double grab_width = (double)grabber->get_width();
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double grab_height = (double)grabber->get_height();
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@ -78,12 +80,11 @@ void Slider::gui_input(const Ref<InputEvent> &p_event) {
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grab.active = true;
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grab.uvalue = get_as_ratio();
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emit_signal(SNAME("drag_started"));
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_notify_shared_value_changed();
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} else {
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grab.active = false;
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const bool value_changed = !Math::is_equal_approx((double)grab.uvalue, get_as_ratio());
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const bool value_changed = !Math::is_equal_approx((double)grab.value_before_dragging, get_as_ratio());
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emit_signal(SNAME("drag_ended"), value_changed);
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}
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} else if (scrollable) {
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@ -38,7 +38,8 @@ class Slider : public Range {
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struct Grab {
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int pos = 0;
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double uvalue = 0.0;
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double uvalue = 0.0; // Value at `pos`.
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double value_before_dragging = 0.0;
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bool active = false;
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} grab;
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