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LibGUI: Update active tooltip when source widget changes the label

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Application::show_tooltip() now keeps track of the application's active
tooltip source widget so it can be updated while being shown when the
same widget updates its tooltip label.
Application::hide_tooltip() will unset the tooltip source widget,
respectively.

This is pretty useful for the ResourceGraph applet's tooltips!

Also re-use the Application::TooltipWindow's rect position in its
set_tooltip() method to avoid flickering from the window temporarily
being moved to 100, 100 and the position adjusted moments later.
This commit is contained in:
Linus Groh 2020-08-15 11:44:34 +02:00 • committed by Andreas Kling
parent f19b88c965
commit 47d7faa998
5 changed files with 27 additions and 7 deletions
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5
Libraries/LibGUI/Widget.h
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@ -28,6 +28,7 @@
#include <AK/String.h>
#include <LibCore/Object.h>
#include <LibGUI/Application.h>
#include <LibGUI/Event.h>
#include <LibGUI/Forward.h>
#include <LibGUI/Margins.h>
@ -113,7 +114,7 @@ public:
bool has_tooltip() const { return !m_tooltip.is_empty(); }
String tooltip() const { return m_tooltip; }
void set_tooltip(const StringView& tooltip) { m_tooltip = tooltip; }
void set_tooltip(const StringView&);
bool is_enabled() const { return m_enabled; }
void set_enabled(bool);
@ -313,6 +314,8 @@ private:
void focus_previous_widget(FocusSource);
void focus_next_widget(FocusSource);
void show_tooltip();
Window* m_window { nullptr };
RefPtr<Layout> m_layout;