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PixelPaint: Undo and redo actions

The most used feature of any image editor, undo. Each tool now
notifies the ImageEditor that they completed an action, where
it'll take a snapshot if its current state.

For now, a snapshot is just a copy of the whole image and its
layers. There's a hard limit on the amount of actions it stores.
This commit is contained in:
BenJilks 2020-10-17 16:47:34 +00:00 committed by Andreas Kling
parent 5aeab9878e
commit 1c27568ab0
21 changed files with 256 additions and 2 deletions

View file

@ -82,6 +82,7 @@ void RectangleTool::on_mouseup(Layer& layer, GUI::MouseEvent& event, GUI::MouseE
draw_using(painter, rect);
m_drawing_button = GUI::MouseButton::None;
layer.did_modify_bitmap(*m_editor->image());
m_editor->did_complete_action();
}
}