mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-05-28 05:52:53 +00:00
ed46d52252
AK's version should see better inlining behaviors, than the LibM one. We avoid mixed usage for now though. Also clean up some stale math includes and improper floatingpoint usage.
121 lines
3.8 KiB
C++
121 lines
3.8 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include "LineTool.h"
|
|
#include "ImageEditor.h"
|
|
#include "Layer.h"
|
|
#include <AK/Math.h>
|
|
#include <LibGUI/Action.h>
|
|
#include <LibGUI/Menu.h>
|
|
#include <LibGUI/Painter.h>
|
|
|
|
namespace PixelPaint {
|
|
|
|
static Gfx::IntPoint constrain_line_angle(Gfx::IntPoint const& start_pos, Gfx::IntPoint const& end_pos, float angle_increment)
|
|
{
|
|
float current_angle = AK::atan2<float>(end_pos.y() - start_pos.y(), end_pos.x() - start_pos.x()) + float { M_PI * 2 };
|
|
|
|
float constrained_angle = ((int)((current_angle + angle_increment / 2) / angle_increment)) * angle_increment;
|
|
|
|
auto diff = end_pos - start_pos;
|
|
float line_length = AK::hypot<float>(diff.x(), diff.y());
|
|
|
|
return { start_pos.x() + (int)(AK::cos(constrained_angle) * line_length),
|
|
start_pos.y() + (int)(AK::sin(constrained_angle) * line_length) };
|
|
}
|
|
|
|
LineTool::LineTool()
|
|
{
|
|
}
|
|
|
|
LineTool::~LineTool()
|
|
{
|
|
}
|
|
|
|
void LineTool::on_mousedown(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent&)
|
|
{
|
|
if (layer_event.button() != GUI::MouseButton::Left && layer_event.button() != GUI::MouseButton::Right)
|
|
return;
|
|
|
|
if (m_drawing_button != GUI::MouseButton::None)
|
|
return;
|
|
|
|
m_drawing_button = layer_event.button();
|
|
|
|
m_line_start_position = layer_event.position();
|
|
m_line_end_position = layer_event.position();
|
|
|
|
m_editor->update();
|
|
}
|
|
|
|
void LineTool::on_mouseup(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent&)
|
|
{
|
|
if (event.button() == m_drawing_button) {
|
|
GUI::Painter painter(layer.bitmap());
|
|
painter.draw_line(m_line_start_position, m_line_end_position, m_editor->color_for(m_drawing_button), m_thickness);
|
|
m_drawing_button = GUI::MouseButton::None;
|
|
layer.did_modify_bitmap();
|
|
m_editor->did_complete_action();
|
|
}
|
|
}
|
|
|
|
void LineTool::on_mousemove(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent&)
|
|
{
|
|
if (m_drawing_button == GUI::MouseButton::None)
|
|
return;
|
|
|
|
if (layer_event.shift()) {
|
|
constexpr auto ANGLE_STEP = M_PI / 8;
|
|
m_line_end_position = constrain_line_angle(m_line_start_position, layer_event.position(), ANGLE_STEP);
|
|
} else {
|
|
m_line_end_position = layer_event.position();
|
|
}
|
|
m_editor->update();
|
|
}
|
|
|
|
void LineTool::on_second_paint(Layer const& layer, GUI::PaintEvent& event)
|
|
{
|
|
if (m_drawing_button == GUI::MouseButton::None)
|
|
return;
|
|
|
|
GUI::Painter painter(*m_editor);
|
|
painter.add_clip_rect(event.rect());
|
|
auto preview_start = m_editor->layer_position_to_editor_position(layer, m_line_start_position).to_type<int>();
|
|
auto preview_end = m_editor->layer_position_to_editor_position(layer, m_line_end_position).to_type<int>();
|
|
painter.draw_line(preview_start, preview_end, m_editor->color_for(m_drawing_button), m_thickness);
|
|
}
|
|
|
|
void LineTool::on_keydown(GUI::KeyEvent& event)
|
|
{
|
|
if (event.key() == Key_Escape && m_drawing_button != GUI::MouseButton::None) {
|
|
m_drawing_button = GUI::MouseButton::None;
|
|
m_editor->update();
|
|
event.accept();
|
|
}
|
|
}
|
|
|
|
void LineTool::on_tool_button_contextmenu(GUI::ContextMenuEvent& event)
|
|
{
|
|
if (!m_context_menu) {
|
|
m_context_menu = GUI::Menu::construct();
|
|
m_thickness_actions.set_exclusive(true);
|
|
auto insert_action = [&](int size, bool checked = false) {
|
|
auto action = GUI::Action::create_checkable(String::number(size), [this, size](auto&) {
|
|
m_thickness = size;
|
|
});
|
|
action->set_checked(checked);
|
|
m_thickness_actions.add_action(*action);
|
|
m_context_menu->add_action(move(action));
|
|
};
|
|
insert_action(1, true);
|
|
insert_action(2);
|
|
insert_action(3);
|
|
insert_action(4);
|
|
}
|
|
m_context_menu->popup(event.screen_position());
|
|
}
|
|
|
|
}
|