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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "EraseTool.h"
#include "ImageEditor.h"
#include "Layer.h"
#include "PaintableWidget.h"
#include <LibGUI/Action.h>
#include <LibGUI/Menu.h>
#include <LibGUI/Painter.h>
#include <LibGfx/Bitmap.h>
namespace PaintBrush {
EraseTool::EraseTool()
{
}
EraseTool::~EraseTool()
{
}
Gfx::Rect EraseTool::build_rect(const Gfx::Point& pos, const Gfx::Rect& widget_rect)
{
const int base_eraser_size = 10;
const int eraser_size = (base_eraser_size * m_thickness);
const int eraser_radius = eraser_size / 2;
const auto ex = pos.x();
const auto ey = pos.y();
return Gfx::Rect(ex - eraser_radius, ey - eraser_radius, eraser_size, eraser_size).intersected(widget_rect);
}
void EraseTool::on_mousedown(Layer& layer, GUI::MouseEvent& event)
{
if (event.button() != GUI::MouseButton::Left && event.button() != GUI::MouseButton::Right)
return;
Gfx::Rect r = build_rect(event.position(), layer.rect());
GUI::Painter painter(layer.bitmap());
painter.clear_rect(r, get_color());
m_editor->update();
}
void EraseTool::on_mousemove(Layer& layer, GUI::MouseEvent& event)
{
if (!m_editor->rect().contains(event.position()))
return;
if (event.buttons() & GUI::MouseButton::Left || event.buttons() & GUI::MouseButton::Right) {
Gfx::Rect r = build_rect(event.position(), layer.rect());
GUI::Painter painter(layer.bitmap());
painter.clear_rect(r, get_color());
m_editor->update();
}
}
void EraseTool::on_contextmenu(GUI::ContextMenuEvent& event)
{
if (!m_context_menu) {
m_context_menu = GUI::Menu::construct();
auto eraser_color_toggler = GUI::Action::create_checkable("Use secondary color", [&](auto& action) {
m_use_secondary_color = action.is_checked();
});
eraser_color_toggler->set_checked(m_use_secondary_color);
m_context_menu->add_action(eraser_color_toggler);
m_context_menu->add_separator();
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());
}
Color EraseTool::get_color() const
{
if (m_use_secondary_color)
return PaintableWidget::the().secondary_color();
return Color(255, 255, 255, 0);
}
}
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