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https://github.com/RGBCube/serenity
synced 2025-05-22 11:15:08 +00:00
7923929a4d
This patch adds the logic for the GuideTool. Pulling in from outside the image creates a new Guide, moving a Guide outside of the image deletes it and a Guide can be deleteted via the context menu. A Guide is considered clicked when the cursor is less than 20 pixels away from the line.
135 lines
4.1 KiB
C++
135 lines
4.1 KiB
C++
/*
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* Copyright (c) 2021, Tobias Christiansen <tobi@tobyase.de>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "GuideTool.h"
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#include "ImageEditor.h"
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#include <LibGUI/Menu.h>
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namespace PixelPaint {
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GuideTool::GuideTool()
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{
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}
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GuideTool::~GuideTool()
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{
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}
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RefPtr<Guide> GuideTool::closest_guide(const Gfx::IntPoint& point)
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{
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auto guides = editor()->guides();
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Guide* closest_guide = nullptr;
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int closest_guide_distance = NumericLimits<int>::max();
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for (auto& guide : guides) {
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int relevant_position = 0;
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if (guide.orientation() == Guide::Orientation::Horizontal)
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relevant_position = point.y();
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else if (guide.orientation() == Guide::Orientation::Vertical)
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relevant_position = point.x();
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auto distance = abs(relevant_position - (int)guide.offset());
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if (distance < closest_guide_distance) {
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closest_guide = &guide;
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closest_guide_distance = distance;
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}
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}
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if (closest_guide_distance < 20)
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return closest_guide;
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return nullptr;
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}
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void GuideTool::on_mousedown(Layer&, GUI::MouseEvent& mouse_event, GUI::MouseEvent& image_event)
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{
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if (!m_editor)
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return;
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if (mouse_event.button() != GUI::MouseButton::Left)
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return;
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RefPtr<Guide> new_guide;
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if (image_event.position().x() < 0 || image_event.position().x() > editor()->image().size().width()) {
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new_guide = Guide::construct(Guide::Orientation::Vertical, image_event.position().x());
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} else if (image_event.position().y() < 0 || image_event.position().y() > editor()->image().size().height()) {
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new_guide = Guide::construct(Guide::Orientation::Horizontal, image_event.position().y());
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}
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if (new_guide) {
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m_selected_guide = new_guide;
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m_guide_origin = 0;
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editor()->add_guide(new_guide.release_nonnull());
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return;
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}
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m_event_origin = image_event.position();
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m_selected_guide = closest_guide(image_event.position());
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if (m_selected_guide)
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m_guide_origin = m_selected_guide->offset();
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}
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void GuideTool::on_mouseup(Layer&, GUI::MouseEvent&, GUI::MouseEvent&)
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{
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m_guide_origin = 0;
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m_event_origin = { 0, 0 };
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if (!m_selected_guide)
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return;
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if (m_selected_guide->offset() < 0
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|| (m_selected_guide->orientation() == Guide::Orientation::Horizontal && m_selected_guide->offset() > editor()->image().size().height())
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|| (m_selected_guide->orientation() == Guide::Orientation::Vertical && m_selected_guide->offset() > editor()->image().size().width())) {
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editor()->remove_guide(*m_selected_guide);
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editor()->layers_did_change();
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}
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m_selected_guide = nullptr;
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}
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void GuideTool::on_mousemove(Layer&, GUI::MouseEvent&, GUI::MouseEvent& image_event)
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{
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if (!m_selected_guide)
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return;
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auto delta = image_event.position() - m_event_origin;
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auto relevant_offset = 0;
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if (m_selected_guide->orientation() == Guide::Orientation::Horizontal)
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relevant_offset = delta.y();
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else if (m_selected_guide->orientation() == Guide::Orientation::Vertical)
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relevant_offset = delta.x();
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auto new_offset = (float)relevant_offset + m_guide_origin;
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m_selected_guide->set_offset(new_offset);
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editor()->layers_did_change();
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}
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void GuideTool::on_context_menu(Layer&, 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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m_context_menu->add_action(GUI::Action::create(
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"&Delete Guide", Gfx::Bitmap::try_load_from_file("/res/icons/16x16/delete.png"), [this](auto&) {
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if (!m_context_menu_guide)
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return;
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editor()->remove_guide(*m_context_menu_guide);
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m_selected_guide = nullptr;
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m_guide_origin = 0;
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editor()->layers_did_change();
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},
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editor()));
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}
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auto image_position = editor()->editor_position_to_image_position(event.position());
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m_context_menu_guide = closest_guide({ (int)image_position.x(), (int)image_position.y() });
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m_context_menu->popup(event.screen_position());
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}
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}
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