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PixelPaint: Add Merge Active Layer Down
action
This allows you to merge the active layer with the one below it.
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3 changed files with 33 additions and 0 deletions
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@ -1,5 +1,6 @@
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/*
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* Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Mustafa Quraish <mustafa@cs.toronto.edu>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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@ -483,6 +484,23 @@ void Image::merge_visible_layers()
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}
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}
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void Image::merge_active_layer_down(Layer& layer)
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{
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if (m_layers.size() < 2)
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return;
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int layer_index = this->index_of(layer);
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if (layer_index == 0) {
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dbgln("Cannot merge layer down: layer is already at the bottom");
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return; // FIXME: Notify user of error properly.
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}
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auto& layer_below = m_layers.at(layer_index - 1);
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GUI::Painter painter(layer_below.bitmap());
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painter.draw_scaled_bitmap(rect(), layer.bitmap(), layer.rect(), (float)layer.opacity_percent() / 100.0f);
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remove_layer(layer);
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select_layer(&layer_below);
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}
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void Image::select_layer(Layer* layer)
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{
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for (auto* client : m_clients)
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