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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

@ -104,7 +104,10 @@ void SprayTool::on_mousemove(Layer&, GUI::MouseEvent& event, GUI::MouseEvent&)
void SprayTool::on_mouseup(Layer&, GUI::MouseEvent&, GUI::MouseEvent&)
{
m_timer->stop();
if (m_timer->is_active()) {
m_timer->stop();
m_editor->did_complete_action();
}
}
void SprayTool::on_tool_button_contextmenu(GUI::ContextMenuEvent& event)