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https://github.com/LadybirdBrowser/ladybird.git
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c6dd3377ee
This patch adds a GUI::TabWidget to the main UI and allows having multiple images open at the same time. Some of the changes here are a bit hackish and mechanical and there's still code around that needs more work to fit better in the new world. One nice side-effect of this change is that ImageEditor now always has one Image associated with it, and it never changes.
100 lines
3 KiB
C++
100 lines
3 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "EraseTool.h"
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#include "ImageEditor.h"
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#include "Layer.h"
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#include <LibGUI/Action.h>
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#include <LibGUI/Menu.h>
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#include <LibGUI/Painter.h>
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#include <LibGfx/Bitmap.h>
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namespace PixelPaint {
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EraseTool::EraseTool()
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{
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}
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EraseTool::~EraseTool()
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{
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}
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Gfx::IntRect EraseTool::build_rect(Gfx::IntPoint const& pos, Gfx::IntRect const& widget_rect)
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{
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const int base_eraser_size = 10;
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const int eraser_size = (base_eraser_size * m_thickness);
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const int eraser_radius = eraser_size / 2;
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const auto ex = pos.x();
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const auto ey = pos.y();
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return Gfx::IntRect(ex - eraser_radius, ey - eraser_radius, eraser_size, eraser_size).intersected(widget_rect);
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}
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void EraseTool::on_mousedown(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent&)
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{
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if (event.button() != GUI::MouseButton::Left && event.button() != GUI::MouseButton::Right)
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return;
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Gfx::IntRect r = build_rect(event.position(), layer.rect());
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GUI::Painter painter(layer.bitmap());
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painter.clear_rect(r, get_color());
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layer.did_modify_bitmap();
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}
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void EraseTool::on_mousemove(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent&)
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{
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if (event.buttons() & GUI::MouseButton::Left || event.buttons() & GUI::MouseButton::Right) {
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Gfx::IntRect r = build_rect(event.position(), layer.rect());
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GUI::Painter painter(layer.bitmap());
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painter.clear_rect(r, get_color());
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layer.did_modify_bitmap();
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}
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}
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void EraseTool::on_mouseup(Layer&, GUI::MouseEvent& event, GUI::MouseEvent&)
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{
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if (event.button() != GUI::MouseButton::Left && event.button() != GUI::MouseButton::Right)
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return;
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m_editor->did_complete_action();
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}
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void EraseTool::on_tool_button_contextmenu(GUI::ContextMenuEvent& event)
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{
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if (!m_context_menu) {
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m_context_menu = GUI::Menu::construct();
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auto eraser_color_toggler = GUI::Action::create_checkable("Use secondary color", [&](auto& action) {
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m_use_secondary_color = action.is_checked();
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});
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eraser_color_toggler->set_checked(m_use_secondary_color);
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m_context_menu->add_action(eraser_color_toggler);
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m_context_menu->add_separator();
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m_thickness_actions.set_exclusive(true);
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auto insert_action = [&](int size, bool checked = false) {
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auto action = GUI::Action::create_checkable(String::number(size), [this, size](auto&) {
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m_thickness = size;
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});
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action->set_checked(checked);
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m_thickness_actions.add_action(*action);
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m_context_menu->add_action(move(action));
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};
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insert_action(1, true);
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insert_action(2);
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insert_action(3);
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insert_action(4);
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}
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m_context_menu->popup(event.screen_position());
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}
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Color EraseTool::get_color() const
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{
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if (m_use_secondary_color)
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return m_editor->secondary_color();
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return Color(255, 255, 255, 0);
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}
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}
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