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https://github.com/RGBCube/serenity
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0d7d759095
This effectively creates a double-buffer for tools to use when modifying the layer's bitmap (content or mask). Once the changes have been made the tool reports to the layer that it has made changes along with a Rect of the changed region. The layer will then merge the changes from the scratch image to the real bitmap. This merge is done as follows: If a given pixel is inside the selected region, the pixel from the scratch bitmap is copied to the real bitmap. If the pixel is not inside the selected region, the pixel from the real bitmap is copied to the scratch bitmap. As an optimization, when there is no selection active, the new method for getting the scratch bitmap will return the real bitmap and no merging will need to take place.
88 lines
2.7 KiB
C++
88 lines
2.7 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, Aaron Yoder <aaronjyoder@gmail.com>
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* Copyright (c) 2022, the SerenityOS developers.
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* Copyright (c) 2022, Timothy Slater <tslater2006@gmail.com>.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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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 "../Mask.h"
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#include <AK/HashTable.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/ValueSlider.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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m_cursor = Gfx::Bitmap::try_load_from_file("/res/icons/pixelpaint/bucket.png"sv).release_value_but_fixme_should_propagate_errors();
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}
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static void flood_fill(Gfx::Bitmap& bitmap, Gfx::IntPoint const& start_position, Color fill_color, int threshold)
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{
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VERIFY(bitmap.bpp() == 32);
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if (!bitmap.rect().contains(start_position))
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return;
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auto pixel_visited = [&](Gfx::IntPoint location) {
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bitmap.set_pixel<Gfx::StorageFormat::BGRA8888>(location.x(), location.y(), fill_color);
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};
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bitmap.flood_visit_from_point(start_position, threshold, move(pixel_visited));
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}
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void BucketTool::on_mousedown(Layer* layer, MouseEvent& event)
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{
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if (!layer)
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return;
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auto& layer_event = event.layer_event();
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if (!layer->rect().contains(layer_event.position()))
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return;
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GUI::Painter painter(layer->get_scratch_edited_bitmap());
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flood_fill(layer->get_scratch_edited_bitmap(), layer_event.position(), m_editor->color_for(layer_event), m_threshold);
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layer->did_modify_bitmap(layer->get_scratch_edited_bitmap().rect());
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m_editor->did_complete_action(tool_name());
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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::ValueSlider>(Orientation::Horizontal, "%");
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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 = [&](int value) {
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m_threshold = value;
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};
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set_primary_slider(&threshold_slider);
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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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