mirror of
https://github.com/RGBCube/serenity
synced 2025-05-31 12:48:10 +00:00
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.
139 lines
4 KiB
C++
139 lines
4 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "SprayTool.h"
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#include "../ImageEditor.h"
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#include "../Layer.h"
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#include <AK/Math.h>
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#include <AK/Queue.h>
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#include <LibGUI/Action.h>
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#include <LibGUI/BoxLayout.h>
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#include <LibGUI/Label.h>
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#include <LibGUI/Menu.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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namespace PixelPaint {
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SprayTool::SprayTool()
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{
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m_timer = Core::Timer::construct();
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m_timer->on_timeout = [&]() {
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paint_it();
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};
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m_timer->set_interval(200);
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}
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static double nrand()
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{
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return double(rand()) / double(RAND_MAX);
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}
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void SprayTool::paint_it()
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{
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auto* layer = m_editor->active_layer();
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if (!layer)
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return;
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auto& bitmap = layer->get_scratch_edited_bitmap();
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GUI::Painter painter(bitmap);
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VERIFY(bitmap.bpp() == 32);
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double const minimal_radius = 2;
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double const base_radius = minimal_radius * m_thickness;
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for (int i = 0; i < M_PI * base_radius * base_radius * (m_density / 100.0); i++) {
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double radius = base_radius * nrand();
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double angle = 2 * M_PI * nrand();
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int const xpos = m_last_pos.x() + radius * AK::cos(angle);
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int const ypos = m_last_pos.y() - radius * AK::sin(angle);
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if (xpos < 0 || xpos >= bitmap.width())
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continue;
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if (ypos < 0 || ypos >= bitmap.height())
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continue;
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bitmap.set_pixel<Gfx::StorageFormat::BGRA8888>(xpos, ypos, m_color);
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}
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layer->did_modify_bitmap(Gfx::IntRect::centered_on(m_last_pos, Gfx::IntSize(base_radius * 2, base_radius * 2)));
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}
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void SprayTool::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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m_color = m_editor->color_for(layer_event);
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m_last_pos = layer_event.position();
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m_timer->start();
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paint_it();
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}
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void SprayTool::on_mousemove(Layer* layer, MouseEvent& event)
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{
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if (!layer)
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return;
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m_last_pos = event.layer_event().position();
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if (m_timer->is_active()) {
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paint_it();
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m_timer->restart(m_timer->interval());
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}
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}
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void SprayTool::on_mouseup(Layer*, MouseEvent&)
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{
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if (m_timer->is_active()) {
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m_timer->stop();
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m_editor->did_complete_action(tool_name());
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}
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}
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GUI::Widget* SprayTool::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& size_container = m_properties_widget->add<GUI::Widget>();
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size_container.set_fixed_height(20);
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size_container.set_layout<GUI::HorizontalBoxLayout>();
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auto& size_label = size_container.add<GUI::Label>("Size:");
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size_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
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size_label.set_fixed_size(80, 20);
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auto& size_slider = size_container.add<GUI::ValueSlider>(Orientation::Horizontal, "px");
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size_slider.set_range(1, 20);
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size_slider.set_value(m_thickness);
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size_slider.on_change = [&](int value) {
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m_thickness = value;
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};
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set_primary_slider(&size_slider);
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auto& density_container = m_properties_widget->add<GUI::Widget>();
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density_container.set_fixed_height(20);
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density_container.set_layout<GUI::HorizontalBoxLayout>();
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auto& density_label = density_container.add<GUI::Label>("Density:");
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density_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
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density_label.set_fixed_size(80, 20);
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auto& density_slider = density_container.add<GUI::ValueSlider>(Orientation::Horizontal, "%");
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density_slider.set_range(1, 100);
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density_slider.set_value(m_density);
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density_slider.on_change = [&](int value) {
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m_density = value;
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};
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set_secondary_slider(&density_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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