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PixelPaint: Add method to merge visible layers

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This adds a function that merges all visible layers to one, ignoring the
invisible.
This commit is contained in:
Marcus Nilsson 2021-07-06 12:48:30 +02:00 • committed by Andreas Kling
parent 0900e31fe0
commit 791a018c99
3 changed files with 39 additions and 0 deletions
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28
Userland/Applications/PixelPaint/Image.cpp
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@ -384,6 +384,34 @@ void Image::flatten_all_layers()
select_layer(&bottom_layer);
}
void Image::merge_visible_layers()
{
if (m_layers.size() < 2)
return;
size_t index = 0;
while (index < m_layers.size()) {
if (m_layers.at(index).is_visible()) {
auto& bottom_layer = m_layers.at(index);
GUI::Painter painter(bottom_layer.bitmap());
paint_into(painter, { 0, 0, m_size.width(), m_size.height() });
select_layer(&bottom_layer);
index++;
break;
}
index++;
}
while (index < m_layers.size()) {
if (m_layers.at(index).is_visible()) {
auto& layer = m_layers.at(index);
remove_layer(layer);
} else {
index++;
}
}
}
void Image::select_layer(Layer* layer)
{
for (auto* client : m_clients)