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Code Issues Activity Actions

PixelPaint: Undo and redo actions

Browse source 
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
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9
Applications/PixelPaint/BrushTool.cpp
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@ -62,6 +62,15 @@ void BrushTool::on_mousemove(Layer& layer, GUI::MouseEvent& event, GUI::MouseEve
draw_line(layer.bitmap(), m_editor->color_for(event), m_last_position, event.position());
layer.did_modify_bitmap(*m_editor->image());
m_last_position = event.position();
m_was_drawing = true;
}
void BrushTool::on_mouseup(Layer&, GUI::MouseEvent&, GUI::MouseEvent&)
{
if (m_was_drawing) {
m_editor->did_complete_action();
m_was_drawing = false;
}
}
void BrushTool::draw_point(Gfx::Bitmap& bitmap, const Gfx::Color& color, const Gfx::IntPoint& point)