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985c2550c1
The main editing widget is now the new ImageEditor widget, which works on an Image object, which internally has a stack of Layer objects. Layers are composited back-to-front when painting the Image inside an ImageEditor.
66 lines
2.3 KiB
C++
66 lines
2.3 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "Image.h"
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#include "Layer.h"
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#include <LibGUI/Painter.h>
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namespace PaintBrush {
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RefPtr<Image> Image::create_with_size(const Gfx::Size& size)
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{
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if (size.is_empty())
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return nullptr;
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if (size.width() > 16384 || size.height() > 16384)
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return nullptr;
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return adopt(*new Image(size));
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}
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Image::Image(const Gfx::Size& size)
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: m_size(size)
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{
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}
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void Image::paint_into(GUI::Painter& painter, const Gfx::Rect& dest_rect, const Gfx::Rect& src_rect)
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{
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for (auto& layer : m_layers) {
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auto target = dest_rect.translated(layer.location());
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dbg() << "Composite layer " << layer.name() << " target: " << target << ", src_rect: " << src_rect;
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painter.draw_scaled_bitmap(target, layer.bitmap(), src_rect);
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}
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}
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void Image::add_layer(NonnullRefPtr<Layer> layer)
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{
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for (auto& existing_layer : m_layers) {
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ASSERT(&existing_layer != layer.ptr());
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}
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m_layers.append(move(layer));
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}
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}
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