gui/tools/freehand.cpp

0001 /*
0002  * SPDX-FileCopyrightText: 2019-2023 Mattia Basaglia <dev@dragon.best>
0003  *
0004  * SPDX-License-Identifier: GPL-3.0-or-later
0005  */
0006
0007 #include "draw_tool_base.hpp"
0008 #include "model/shapes/path.hpp"
0009 #include "math/bezier/operations.hpp"
0010
0011 namespace glaxnimate::gui::tools {
0012
0013 class FreehandTool : public DrawToolBase
0014 {
0015 public:
0016     QString id() const override { return "draw-freehand"; }
0017     QIcon icon() const override { return QIcon::fromTheme("draw-freehand"); }
0018     QString name() const override { return i18n("Draw Freehand"); }
0019     QKeySequence key_sequence() const override { return QKeySequence(i18n("F6"), QKeySequence::PortableText); }
0020     static int static_group() noexcept { return Registry::Draw; }
0021     int group() const noexcept override { return static_group(); }
0022
0023     void mouse_press(const MouseEvent& event) override
0024     {
0025         if ( event.button() == Qt::LeftButton )
0026         {
0027             path.add_point(event.scene_pos);
0028         }
0029     }
0030     void mouse_move(const MouseEvent& event) override
0031     {
0032         if ( !path.empty() )
0033         {
0034             path.add_point(event.scene_pos);
0035             event.repaint();
0036         }
0037
0038     }
0039     void mouse_release(const MouseEvent& event) override
0040     {
0041         if ( path.size() > 1 )
0042         {
0043             auto shape = std::make_unique<model::Path>(event.window->document());
0044             math::bezier::simplify(path, 128);
0045             shape->shape.set(path);
0046             path.clear();
0047             create_shape(i18n("Draw Freehand"), event, std::move(shape));
0048         }
0049         else
0050         {
0051             if ( path.size() == 1 )
0052                 path.clear();
0053             edit_clicked(event);
0054         }
0055     }
0056
0057     void mouse_double_click(const MouseEvent& event) override
0058     {
0059         edit_clicked(event);
0060     }
0061
0062     void paint(const PaintEvent& event) override
0063     {
0064         if ( !path.empty() )
0065         {
0066             QPainterPath ppath;
0067             path.add_to_painter_path(ppath);
0068             draw_shape(event, event.view->mapFromScene(ppath));
0069         }
0070     }
0071
0072     void key_press(const KeyEvent& event) override
0073     {
0074         if ( event.key() == Qt::Key_Escape )
0075         {
0076             path.clear();
0077             event.repaint();
0078             event.accept();
0079         }
0080     }
0081
0082     void key_release(const KeyEvent& event) override { Q_UNUSED(event); }
0083     void enable_event(const Event& event) override { Q_UNUSED(event); }
0084     void disable_event(const Event& event) override { Q_UNUSED(event); }
0085
0086 private:
0087     static Autoreg<FreehandTool> autoreg;
0088     math::bezier::Bezier path;
0089 };
0090
0091
0092 tools::Autoreg<tools::FreehandTool> tools::FreehandTool::autoreg{max_priority + 1};
0093
0094 } // namespace glaxnimate::gui::tools