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LibGUI: Have widgets signal willingness to accept drops

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If a widget accept()'s a "drag enter" event, that widget now becomes
the application-wide "pending drop" widget. That state is cleared if
the drag moves over another widget (or leaves the window entirely.)
This commit is contained in:
Andreas Kling 2021-01-09 00:11:17 +01:00
parent dbd090fd95
commit 3b94af2c07
5 changed files with 60 additions and 19 deletions
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7
Libraries/LibGUI/Application.h
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@ -74,6 +74,7 @@ public:
void set_system_palette(SharedBuffer&);
bool focus_debugging_enabled() const { return m_focus_debugging_enabled; }
bool dnd_debugging_enabled() const { return m_dnd_debugging_enabled; }
Core::EventLoop& event_loop() { return *m_event_loop; }
@ -86,6 +87,9 @@ public:
Widget* drag_hovered_widget() { return m_drag_hovered_widget.ptr(); }
const Widget* drag_hovered_widget() const { return m_drag_hovered_widget.ptr(); }
Widget* pending_drop_widget() { return m_pending_drop_widget.ptr(); }
const Widget* pending_drop_widget() const { return m_pending_drop_widget.ptr(); }
void set_drag_hovered_widget(Badge<Window>, Widget* widget, const Gfx::IntPoint& position = {}, const String& mime_type = {})
{
set_drag_hovered_widget_impl(widget, position, mime_type);
@ -99,6 +103,7 @@ private:
void tooltip_hide_timer_did_fire();
void set_drag_hovered_widget_impl(Widget*, const Gfx::IntPoint& = {}, const String& = {});
void set_pending_drop_widget(Widget*);
OwnPtr<Core::EventLoop> m_event_loop;
RefPtr<MenuBar> m_menubar;
@ -113,9 +118,11 @@ private:
WeakPtr<Window> m_active_window;
bool m_quit_when_last_window_deleted { true };
bool m_focus_debugging_enabled { false };
bool m_dnd_debugging_enabled { false };
String m_invoked_as;
Vector<String> m_args;
WeakPtr<Widget> m_drag_hovered_widget;
WeakPtr<Widget> m_pending_drop_widget;
};
}