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PixelPaint: Add method to flatten image layers

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This adds Image::flatten_all_layers() that allows the user to flatten
all the visible layers into one.
This commit is contained in:
Marcus Nilsson 2021-07-05 22:42:43 +02:00 • committed by Andreas Kling
parent 76a18e1172
commit 9be08e33ea
4 changed files with 30 additions and 0 deletions
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18
Userland/Applications/PixelPaint/Image.cpp
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@ -366,6 +366,24 @@ void Image::remove_layer(Layer& layer)
did_modify_layer_stack();
}
void Image::flatten_all_layers()
{
if (m_layers.size() < 2)
return;
auto& bottom_layer = m_layers.at(0);
GUI::Painter painter(bottom_layer.bitmap());
paint_into(painter, { 0, 0, m_size.width(), m_size.height() });
for (size_t index = m_layers.size() - 1; index > 0; index--) {
auto& layer = m_layers.at(index);
remove_layer(layer);
}
bottom_layer.set_name("Background");
select_layer(&bottom_layer);
}
void Image::select_layer(Layer* layer)
{
for (auto* client : m_clients)