mirror of
https://github.com/SerenityOS/serenity.git
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133 lines
4.6 KiB
C++
133 lines
4.6 KiB
C++
/*
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* Copyright (c) 2018-2020, 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 "BucketTool.h"
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#include "ImageEditor.h"
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#include "Layer.h"
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#include <AK/Queue.h>
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#include <LibGUI/BoxLayout.h>
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#include <LibGUI/Label.h>
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#include <LibGUI/Painter.h>
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#include <LibGUI/Slider.h>
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#include <LibGfx/Bitmap.h>
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#include <LibGfx/Rect.h>
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namespace PixelPaint {
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BucketTool::BucketTool()
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{
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}
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BucketTool::~BucketTool()
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{
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}
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static float color_distance_squared(const Gfx::Color& lhs, const Gfx::Color& rhs)
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{
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int a = rhs.red() - lhs.red();
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int b = rhs.green() - lhs.green();
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int c = rhs.blue() - lhs.blue();
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return (a * a + b * b + c * c) / (255.0f * 255.0f);
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}
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static void flood_fill(Gfx::Bitmap& bitmap, const Gfx::IntPoint& start_position, Color target_color, Color fill_color, int threshold)
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{
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ASSERT(bitmap.bpp() == 32);
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if (target_color == fill_color)
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return;
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if (!bitmap.rect().contains(start_position))
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return;
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float threshold_normalized_squared = (threshold / 100.0f) * (threshold / 100.0f);
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Queue<Gfx::IntPoint> queue;
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queue.enqueue(start_position);
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while (!queue.is_empty()) {
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auto position = queue.dequeue();
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auto pixel_color = bitmap.get_pixel<Gfx::StorageFormat::RGBA32>(position.x(), position.y());
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if (color_distance_squared(pixel_color, target_color) > threshold_normalized_squared)
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continue;
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bitmap.set_pixel<Gfx::StorageFormat::RGBA32>(position.x(), position.y(), fill_color);
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if (position.x() != 0)
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queue.enqueue(position.translated(-1, 0));
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if (position.x() != bitmap.width() - 1)
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queue.enqueue(position.translated(1, 0));
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if (position.y() != 0)
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queue.enqueue(position.translated(0, -1));
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if (position.y() != bitmap.height() - 1)
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queue.enqueue(position.translated(0, 1));
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}
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}
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void BucketTool::on_mousedown(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent&)
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{
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if (!layer.rect().contains(event.position()))
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return;
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GUI::Painter painter(layer.bitmap());
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auto target_color = layer.bitmap().get_pixel(event.x(), event.y());
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flood_fill(layer.bitmap(), event.position(), target_color, m_editor->color_for(event), m_threshold);
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layer.did_modify_bitmap(*m_editor->image());
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m_editor->did_complete_action();
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}
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GUI::Widget* BucketTool::get_properties_widget()
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{
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if (!m_properties_widget) {
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m_properties_widget = GUI::Widget::construct();
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m_properties_widget->set_layout<GUI::VerticalBoxLayout>();
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auto& threshold_container = m_properties_widget->add<GUI::Widget>();
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threshold_container.set_fixed_height(20);
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threshold_container.set_layout<GUI::HorizontalBoxLayout>();
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auto& threshold_label = threshold_container.add<GUI::Label>("Threshold:");
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threshold_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
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threshold_label.set_fixed_size(80, 20);
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auto& threshold_slider = threshold_container.add<GUI::HorizontalSlider>();
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threshold_slider.set_fixed_height(20);
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threshold_slider.set_range(0, 100);
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threshold_slider.set_value(m_threshold);
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threshold_slider.on_change = [this](int value) {
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m_threshold = value;
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};
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}
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return m_properties_widget.ptr();
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}
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}
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