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/*
* Copyright (c) 2021, Mustafa Quraish <mustafa@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "CloneTool.h"
#include "../ImageEditor.h"
#include "../Layer.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 {
void CloneTool::draw_point(Gfx::Bitmap& bitmap, Gfx::Color const&, Gfx::IntPoint const& point)
{
if (!m_sample_location.has_value())
return;
auto source_point = point - m_cursor_offset.value();
for (int y = -size(); y < size(); y++) {
for (int x = -size(); x < size(); x++) {
auto target_x = point.x() + x;
auto target_y = point.y() + y;
auto distance = point.distance_from({ target_x, target_y });
if (target_x < 0 || target_x >= bitmap.width() || target_y < 0 || target_y >= bitmap.height())
continue;
if (distance >= size())
continue;
auto source_x = source_point.x() + x;
auto source_y = source_point.y() + y;
if (source_x < 0 || source_x >= bitmap.width() || source_y < 0 || source_y >= bitmap.height())
continue;
auto falloff = get_falloff(distance);
auto pixel_color = bitmap.get_pixel(source_x, source_y);
pixel_color.set_alpha(falloff * 255);
bitmap.set_pixel(target_x, target_y, bitmap.get_pixel(target_x, target_y).blend(pixel_color));
}
}
}
void CloneTool::draw_line(Gfx::Bitmap& bitmap, Gfx::Color const& color, Gfx::IntPoint const& start, Gfx::IntPoint const& end)
{
if (!m_sample_location.has_value())
return;
BrushTool::draw_line(bitmap, color, start, end);
}
Variant<Gfx::StandardCursor, NonnullRefPtr<Gfx::Bitmap>> CloneTool::cursor()
{
if (m_is_selecting_location)
return Gfx::StandardCursor::Eyedropper;
return Gfx::StandardCursor::Crosshair;
}
void CloneTool::on_mousemove(Layer* layer, MouseEvent& event)
{
auto& image_event = event.image_event();
if (image_event.alt())
return;
if (m_cursor_offset.has_value()) {
m_sample_location = image_event.position() - m_cursor_offset.value();
// FIXME: This is a really inefficient way to update the marker's location
m_editor->update();
}
BrushTool::on_mousemove(layer, event);
}
void CloneTool::on_mousedown(Layer* layer, MouseEvent& event)
{
auto& image_event = event.image_event();
if (image_event.alt()) {
m_sample_location = image_event.position();
m_cursor_offset = {};
// FIXME: This is a really dumb way to get the marker to show up
m_editor->update();
return;
}
if (!m_sample_location.has_value())
return;
if (!m_cursor_offset.has_value())
m_cursor_offset = event.image_event().position() - m_sample_location.value();
BrushTool::on_mousedown(layer, event);
}
void CloneTool::on_second_paint(Layer const*, GUI::PaintEvent& event)
{
if (!m_sample_location.has_value())
return;
GUI::Painter painter(*m_editor);
painter.add_clip_rect(event.rect());
auto sample_pos = m_editor->image_position_to_editor_position(m_sample_location.value());
// We don't want the marker to be a single pixel and hide the color.
auto offset = AK::max(2, size() / 2);
Gfx::IntRect rect = {
(int)sample_pos.x() - offset,
(int)sample_pos.y() - offset,
offset * 2,
offset * 2
};
painter.draw_ellipse_intersecting(rect, m_marker_color, 1);
}
void CloneTool::on_keydown(GUI::KeyEvent& event)
{
Tool::on_keydown(event);
if (event.key() == KeyCode::Key_Alt && !m_is_selecting_location) {
m_is_selecting_location = true;
m_editor->update_tool_cursor();
return;
}
}
void CloneTool::on_keyup(GUI::KeyEvent& event)
{
if (m_is_selecting_location && event.key() == KeyCode::Key_Alt) {
m_is_selecting_location = false;
m_editor->update_tool_cursor();
return;
}
}
GUI::Widget* CloneTool::get_properties_widget()
{
if (!m_properties_widget) {
m_properties_widget = GUI::Widget::construct();
m_properties_widget->set_layout<GUI::VerticalBoxLayout>();
auto& size_container = m_properties_widget->add<GUI::Widget>();
size_container.set_fixed_height(20);
size_container.set_layout<GUI::HorizontalBoxLayout>();
auto& size_label = size_container.add<GUI::Label>("Size:");
size_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
size_label.set_fixed_size(80, 20);
auto& size_slider = size_container.add<GUI::ValueSlider>(Orientation::Horizontal, "px");
size_slider.set_range(1, 100);
size_slider.set_value(size());
size_slider.on_change = [&](int value) {
set_size(value);
};
set_primary_slider(&size_slider);
auto& hardness_container = m_properties_widget->add<GUI::Widget>();
hardness_container.set_fixed_height(20);
hardness_container.set_layout<GUI::HorizontalBoxLayout>();
auto& hardness_label = hardness_container.add<GUI::Label>("Hardness:");
hardness_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
hardness_label.set_fixed_size(80, 20);
auto& hardness_slider = hardness_container.add<GUI::ValueSlider>(Orientation::Horizontal, "%");
hardness_slider.set_range(1, 100);
hardness_slider.on_change = [&](int value) {
set_hardness(value);
};
hardness_slider.set_value(100);
set_secondary_slider(&hardness_slider);
}
return m_properties_widget.ptr();
}
}
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