1 
2 //
3 // This source file is part of appleseed.
4 // Visit https://appleseedhq.net/ for additional information and resources.
5 //
6 // This software is released under the MIT license.
7 //
8 // Copyright (c) 2010-2013 Francois Beaune, Jupiter Jazz Limited
9 // Copyright (c) 2014-2018 Francois Beaune, The appleseedhq Organization
10 //
11 // Permission is hereby granted, free of charge, to any person obtaining a copy
12 // of this software and associated documentation files (the "Software"), to deal
13 // in the Software without restriction, including without limitation the rights
14 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
15 // copies of the Software, and to permit persons to whom the Software is
16 // furnished to do so, subject to the following conditions:
17 //
18 // The above copyright notice and this permission notice shall be included in
19 // all copies or substantial portions of the Software.
20 //
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
24 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
26 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
27 // THE SOFTWARE.
28 //
29 
30 #pragma once
31 
32 // appleseed.foundation headers.
33 #include "foundation/math/vector.h"
34 
35 // Qt headers.
36 #include <QObject>
37 
38 // Forward declarations.
39 class QEvent;
40 class QLabel;
41 class QPoint;
42 class QWidget;
43 
44 namespace appleseed {
45 namespace studio {
46 
47 class MouseCoordinatesTracker
48   : public QObject
49 {
50     Q_OBJECT
51 
52   public:
53     MouseCoordinatesTracker(
54         QWidget*    widget,
55         QLabel*     label);
56 
57     ~MouseCoordinatesTracker() override;
58 
59     foundation::Vector2d widget_to_ndc(const QPoint& point) const;
60     foundation::Vector2i widget_to_pixel(const QPoint& point) const;
61 
62   private:
63     QWidget*        m_widget;
64     QLabel*         m_label;
65     const int       m_content_width;
66     const int       m_content_height;
67 
68     bool eventFilter(QObject* object, QEvent* event) override;
69 
70     void set_label_text(const QPoint& point) const;
71 
72 };
73 
74 }   // namespace studio
75 }   // namespace appleseed
76