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LibGUI: Notify widgets when their enabled state changes.

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This is done by dispatching a (synchronous) "EnabledChange" event that can
be picked up in change_event(). Use this event to kick widgets out of their
"being pressed"-type modes if the user is interacting with them while the
state is programmatically changed.
This commit is contained in:
Andreas Kling
2019-05-25 13:40:57 +02:00
parent e478a2fb0a
commit d12857fc36
9 changed files with 44 additions and 0 deletions
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13
LibGUI/GAbstractButton.cpp
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@@ -124,3 +124,16 @@ void GAbstractButton::paint_text(GPainter& painter, const Rect& rect, const Font
if (is_focused())
painter.draw_rect(clipped_rect.inflated(6, 4), Color(140, 140, 140));
}
void GAbstractButton::change_event(GEvent& event)
{
if (event.type() == GEvent::Type::EnabledChange) {
if (!is_enabled()) {
bool was_being_pressed = m_being_pressed;
m_being_pressed = false;
if (was_being_pressed)
update();
}
}
GWidget::change_event(event);
}