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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "SprayTool.h"
#include "../ImageEditor.h"
#include "../Layer.h"
#include <AK/Math.h>
#include <AK/Queue.h>
#include <LibGUI/Action.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Label.h>
#include <LibGUI/Menu.h>
#include <LibGUI/Painter.h>
#include <LibGUI/ValueSlider.h>
#include <LibGfx/Bitmap.h>
namespace PixelPaint {
SprayTool::SprayTool()
{
m_timer = Core::Timer::create_repeating(200, [&]() {
paint_it();
}).release_value_but_fixme_should_propagate_errors();
}
static double nrand()
{
return double(rand()) / double(RAND_MAX);
}
void SprayTool::paint_it()
{
auto* layer = m_editor->active_layer();
if (!layer)
return;
auto& bitmap = layer->get_scratch_edited_bitmap();
GUI::Painter painter(bitmap);
VERIFY(bitmap.bpp() == 32);
double const minimal_radius = 2;
double const base_radius = minimal_radius * m_thickness;
for (int i = 0; i < M_PI * base_radius * base_radius * (m_density / 100.0); i++) {
double radius = base_radius * nrand();
double angle = 2 * M_PI * nrand();
int const xpos = m_last_pos.x() + radius * AK::cos(angle);
int const ypos = m_last_pos.y() - radius * AK::sin(angle);
if (xpos < 0 || xpos >= bitmap.width())
continue;
if (ypos < 0 || ypos >= bitmap.height())
continue;
bitmap.set_pixel<Gfx::StorageFormat::BGRA8888>(xpos, ypos, m_color);
}
layer->did_modify_bitmap(Gfx::IntRect::centered_on(m_last_pos, Gfx::IntSize(base_radius * 2, base_radius * 2)));
}
void SprayTool::on_mousedown(Layer* layer, MouseEvent& event)
{
if (!layer)
return;
auto& layer_event = event.layer_event();
m_color = m_editor->color_for(layer_event);
m_last_pos = layer_event.position();
m_timer->start();
paint_it();
}
void SprayTool::on_mousemove(Layer* layer, MouseEvent& event)
{
if (!layer)
return;
m_last_pos = event.layer_event().position();
if (m_timer->is_active()) {
paint_it();
m_timer->restart(m_timer->interval());
}
}
void SprayTool::on_mouseup(Layer*, MouseEvent&)
{
if (m_timer->is_active()) {
m_timer->stop();
m_editor->did_complete_action(tool_name());
}
}
ErrorOr<GUI::Widget*> SprayTool::get_properties_widget()
{
if (!m_properties_widget) {
auto properties_widget = TRY(GUI::Widget::try_create());
(void)TRY(properties_widget->try_set_layout<GUI::VerticalBoxLayout>());
auto size_container = TRY(properties_widget->try_add<GUI::Widget>());
size_container->set_fixed_height(20);
(void)TRY(size_container->try_set_layout<GUI::HorizontalBoxLayout>());
auto size_label = TRY(size_container->try_add<GUI::Label>("Size:"));
size_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
size_label->set_fixed_size(80, 20);
auto size_slider = TRY(size_container->try_add<GUI::ValueSlider>(Orientation::Horizontal, "px"_short_string));
size_slider->set_range(1, 20);
size_slider->set_value(m_thickness);
size_slider->on_change = [this](int value) {
m_thickness = value;
};
set_primary_slider(size_slider);
auto density_container = TRY(properties_widget->try_add<GUI::Widget>());
density_container->set_fixed_height(20);
(void)TRY(density_container->try_set_layout<GUI::HorizontalBoxLayout>());
auto density_label = TRY(density_container->try_add<GUI::Label>("Density:"));
density_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
density_label->set_fixed_size(80, 20);
auto density_slider = TRY(density_container->try_add<GUI::ValueSlider>(Orientation::Horizontal, "%"_short_string));
density_slider->set_range(1, 100);
density_slider->set_value(m_density);
density_slider->on_change = [this](int value) {
m_density = value;
};
set_secondary_slider(density_slider);
m_properties_widget = properties_widget;
}
return m_properties_widget.ptr();
}
}
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