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https://github.com/RGBCube/serenity
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dc3de47b03
We use this to automatically update the thumbnail in LayerListWidget when you draw into a layer. We also use it to repaint the ImageEditor when the image changes somehow. :^)
147 lines
4.1 KiB
C++
147 lines
4.1 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 "LayerListWidget.h"
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#include "Image.h"
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#include "Layer.h"
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#include <LibGUI/Model.h>
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#include <LibGUI/Painter.h>
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#include <LibGfx/Palette.h>
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namespace PixelPaint {
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LayerListWidget::LayerListWidget()
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{
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}
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LayerListWidget::~LayerListWidget()
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{
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if (m_image)
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m_image->remove_client(*this);
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}
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void LayerListWidget::set_image(Image* image)
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{
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if (m_image == image)
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return;
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if (m_image)
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m_image->remove_client(*this);
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m_image = image;
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if (m_image)
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m_image->add_client(*this);
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m_gadgets.clear();
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if (m_image) {
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for (size_t layer_index = 0; layer_index < m_image->layer_count(); ++layer_index) {
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m_gadgets.append({ layer_index, {} });
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}
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}
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relayout_gadgets();
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}
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void LayerListWidget::resize_event(GUI::ResizeEvent& event)
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{
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Widget::resize_event(event);
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relayout_gadgets();
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}
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void LayerListWidget::paint_event(GUI::PaintEvent& event)
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{
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GUI::Painter painter(*this);
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painter.add_clip_rect(event.rect());
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painter.fill_rect(event.rect(), palette().button());
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if (!m_image)
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return;
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painter.fill_rect(event.rect(), palette().button());
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for (auto& gadget : m_gadgets) {
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painter.draw_rect(gadget.rect, Color::Black);
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auto& layer = m_image->layer(gadget.layer_index);
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Gfx::Rect thumbnail_rect { gadget.rect.x(), gadget.rect.y(), gadget.rect.height(), gadget.rect.height() };
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thumbnail_rect.shrink(8, 8);
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painter.draw_scaled_bitmap(thumbnail_rect, layer.bitmap(), layer.bitmap().rect());
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Gfx::Rect text_rect { thumbnail_rect.right() + 10, gadget.rect.y(), gadget.rect.width(), gadget.rect.height() };
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text_rect.intersect(gadget.rect);
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painter.draw_text(text_rect, layer.name(), Gfx::TextAlignment::CenterLeft);
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}
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}
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void LayerListWidget::mousedown_event(GUI::MouseEvent& event)
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{
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(void)event;
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}
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void LayerListWidget::mousemove_event(GUI::MouseEvent& event)
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{
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(void)event;
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}
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void LayerListWidget::mouseup_event(GUI::MouseEvent& event)
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{
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(void)event;
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}
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void LayerListWidget::image_did_add_layer(size_t layer_index)
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{
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Gadget gadget { layer_index, {} };
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m_gadgets.insert(layer_index, move(gadget));
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relayout_gadgets();
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}
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void LayerListWidget::image_did_remove_layer(size_t layer_index)
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{
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m_gadgets.remove(layer_index);
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relayout_gadgets();
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}
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void LayerListWidget::image_did_modify_layer(size_t layer_index)
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{
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update(m_gadgets[layer_index].rect);
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}
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void LayerListWidget::relayout_gadgets()
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{
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constexpr int gadget_height = 30;
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constexpr int gadget_spacing = 1;
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int y = 0;
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for (auto& gadget : m_gadgets) {
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gadget.rect = { 0, y, width(), gadget_height };
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y += gadget_height + gadget_spacing;
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}
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update();
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}
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}
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