mirror of
https://github.com/RGBCube/serenity
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ecc202c59d
Holding shift while using the polygonal select tool now constrains the line angle in 22.5 degree increments. This matches the behavior of the line tool.
86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Mustafa Quraish <mustafa@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "Tool.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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namespace PixelPaint {
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void Tool::setup(ImageEditor& editor)
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{
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m_editor = editor;
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}
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void Tool::set_action(GUI::Action* action)
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{
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m_action = action;
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}
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bool Tool::on_keydown(GUI::KeyEvent& event)
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{
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switch (event.key()) {
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case KeyCode::Key_LeftBracket:
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if (m_primary_slider) {
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m_primary_slider->decrease_slider_by(1);
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return true;
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}
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break;
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case KeyCode::Key_RightBracket:
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if (m_primary_slider) {
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m_primary_slider->increase_slider_by(1);
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return true;
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}
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break;
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case KeyCode::Key_LeftBrace:
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if (m_secondary_slider) {
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m_secondary_slider->decrease_slider_by(1);
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return true;
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}
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break;
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case KeyCode::Key_RightBrace:
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if (m_secondary_slider) {
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m_secondary_slider->increase_slider_by(1);
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return true;
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}
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break;
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default:
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break;
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}
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return false;
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}
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Gfx::IntPoint Tool::editor_layer_location(Layer const& layer) const
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{
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return (Gfx::FloatPoint { layer.location() } * m_editor->scale()).to_rounded<int>();
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}
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Gfx::IntPoint Tool::editor_stroke_position(Gfx::IntPoint pixel_coords, int stroke_thickness) const
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{
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auto position = m_editor->content_to_frame_position(pixel_coords);
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auto offset = (stroke_thickness % 2 == 0) ? 0 : m_editor->scale() / 2;
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position = position.translated(offset, offset);
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return position.to_type<int>();
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}
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Gfx::IntPoint Tool::constrain_line_angle(Gfx::IntPoint start_pos, Gfx::IntPoint end_pos, float angle_increment)
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{
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float current_angle = AK::atan2<float>(end_pos.y() - start_pos.y(), end_pos.x() - start_pos.x()) + float { M_PI * 2 };
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float constrained_angle = ((int)((current_angle + angle_increment / 2) / angle_increment)) * angle_increment;
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auto diff = end_pos - start_pos;
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float line_length = AK::hypot<float>(diff.x(), diff.y());
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return { start_pos.x() + (int)(AK::cos(constrained_angle) * line_length),
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start_pos.y() + (int)(AK::sin(constrained_angle) * line_length) };
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}
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}
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