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LibGUI+ThemeEditor: Split preview-widget palette-change callback

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There are two different things in ThemeEditor that want to know when a
palette changes:
1. The PreviewWidget subclass, so it can update its preview.
2. The ThemeEditor itself, so we know that the palette is modified.

Using a protected virtual function for 1 means that we can do 2 without
them fighting over the same on_palette_change callback.
This commit is contained in:
Sam Atkins 2022-04-29 12:07:06 +01:00 • committed by Andreas Kling
parent 5fd0140772
commit 6c572006a3
4 changed files with 15 additions and 10 deletions
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4
Userland/Libraries/LibGUI/AbstractThemePreview.h
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@ -1,6 +1,6 @@
/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2021-2022, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2021, Antonio Di Stefano <tonio9681@gmail.com>
* Copyright (c) 2022, the SerenityOS developers.
*
@ -45,6 +45,8 @@ protected:
return *m_inactive_window_icon;
}
virtual void palette_changed() {};
private:
virtual void paint_preview(GUI::PaintEvent&) = 0;