/* * Copyright (c) 2020, Andreas Kling * 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 "ImageEditor.h" #include "Image.h" #include "Layer.h" #include "LayerModel.h" #include "Tool.h" #include #include namespace PaintBrush { ImageEditor::ImageEditor() { } void ImageEditor::set_image(RefPtr image) { m_image = move(image); update(); } void ImageEditor::paint_event(GUI::PaintEvent& event) { GUI::Frame::paint_event(event); GUI::Painter painter(*this); painter.add_clip_rect(event.rect()); painter.add_clip_rect(frame_inner_rect()); painter.translate(frame_thickness(), frame_thickness()); painter.fill_rect_with_checkerboard(rect(), { 8, 8 }, palette().base().darkened(0.9), palette().base()); if (m_image) { painter.draw_rect(m_image->rect().inflated(2, 2), Color::Black); m_image->paint_into(painter, m_image->rect(), m_image->rect()); } if (m_active_layer) { painter.draw_rect(m_active_layer->relative_rect().inflated(2, 2), Color::Black); } } void ImageEditor::second_paint_event(GUI::PaintEvent& event) { if (m_active_tool && m_active_layer) m_active_tool->on_second_paint(*m_active_layer, event); } static GUI::MouseEvent event_adjusted_for_layer(const GUI::MouseEvent& original_event, const Layer& layer) { auto position_in_active_layer_coordinates = original_event.position().translated(-layer.location()); return { static_cast(original_event.type()), position_in_active_layer_coordinates, original_event.buttons(), original_event.button(), original_event.modifiers(), original_event.wheel_delta() }; } void ImageEditor::mousedown_event(GUI::MouseEvent& event) { if (!m_active_tool) return; if (m_active_tool->is_move_tool()) { if (auto* other_layer = layer_at(event.position())) { set_active_layer(other_layer); } } if (!m_active_layer) return; auto layer_event = event_adjusted_for_layer(event, *m_active_layer); m_active_tool->on_mousedown(*m_active_layer, layer_event, event); } void ImageEditor::mousemove_event(GUI::MouseEvent& event) { if (!m_active_layer || !m_active_tool) return; auto layer_event = event_adjusted_for_layer(event, *m_active_layer); m_active_tool->on_mousemove(*m_active_layer, layer_event, event); } void ImageEditor::mouseup_event(GUI::MouseEvent& event) { if (!m_active_layer || !m_active_tool) return; auto layer_event = event_adjusted_for_layer(event, *m_active_layer); m_active_tool->on_mouseup(*m_active_layer, layer_event, event); } void ImageEditor::context_menu_event(GUI::ContextMenuEvent& event) { if (!m_active_layer || !m_active_tool) return; m_active_tool->on_context_menu(*m_active_layer, event); } void ImageEditor::keydown_event(GUI::KeyEvent& event) { if (m_active_tool) m_active_tool->on_keydown(event); } void ImageEditor::keyup_event(GUI::KeyEvent& event) { if (m_active_tool) m_active_tool->on_keyup(event); } void ImageEditor::set_active_layer(Layer* layer) { if (m_active_layer == layer) return; m_active_layer = layer; if (m_active_layer) { size_t index = 0; for (; index < m_image->layer_count(); ++index) { if (&m_image->layer(index) == layer) break; } if (on_active_layer_change) on_active_layer_change(m_image->layer_model().index(index)); } else { if (on_active_layer_change) on_active_layer_change({}); } layers_did_change(); } void ImageEditor::set_active_tool(Tool* tool) { if (m_active_tool == tool) return; if (m_active_tool) m_active_tool->clear(); m_active_tool = tool; if (m_active_tool) m_active_tool->setup(*this); } void ImageEditor::layers_did_change() { static_cast(m_image->layer_model()).update_without_invalidating_indexes(); update(); } Color ImageEditor::color_for(GUI::MouseButton button) const { if (button == GUI::MouseButton::Left) return m_primary_color; if (button == GUI::MouseButton::Right) return m_secondary_color; ASSERT_NOT_REACHED(); } Color ImageEditor::color_for(const GUI::MouseEvent& event) const { if (event.buttons() & GUI::MouseButton::Left) return m_primary_color; if (event.buttons() & GUI::MouseButton::Right) return m_secondary_color; ASSERT_NOT_REACHED(); } void ImageEditor::set_primary_color(Color color) { if (m_primary_color == color) return; m_primary_color = color; if (on_primary_color_change) on_primary_color_change(color); } void ImageEditor::set_secondary_color(Color color) { if (m_secondary_color == color) return; m_secondary_color = color; if (on_secondary_color_change) on_secondary_color_change(color); } Layer* ImageEditor::layer_at(const Gfx::Point& position) { if (!m_image) return nullptr; for (ssize_t i = m_image->layer_count() - 1; i >= 0; --i) { auto& layer = m_image->layer(i); if (layer.relative_rect().contains(position)) return const_cast(&layer); } return nullptr; } }