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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2013 Joel Holdsworth <joel@airwebreathe.org.uk> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #ifndef PULSEVIEW_PV_WIDGETS_POPUP_HPP | |
21 | #define PULSEVIEW_PV_WIDGETS_POPUP_HPP | |
22 | ||
23 | #include <QWidget> | |
24 | ||
25 | namespace pv { | |
26 | namespace widgets { | |
27 | ||
28 | class Popup : public QWidget | |
29 | { | |
30 | Q_OBJECT | |
31 | ||
32 | public: | |
33 | enum Position | |
34 | { | |
35 | Right, | |
36 | Top, | |
37 | Left, | |
38 | Bottom | |
39 | }; | |
40 | ||
41 | private: | |
42 | static const unsigned int ArrowLength; | |
43 | static const unsigned int ArrowOverlap; | |
44 | static const unsigned int MarginWidth; | |
45 | ||
46 | public: | |
47 | Popup(QWidget *parent); | |
48 | ||
49 | const QPoint& point() const; | |
50 | Position position() const; | |
51 | ||
52 | void set_position(const QPoint point, Position pos); | |
53 | ||
54 | bool eventFilter(QObject *obj, QEvent *event); | |
55 | ||
56 | void show(); | |
57 | ||
58 | private: | |
59 | bool space_for_arrow() const; | |
60 | ||
61 | QPolygon arrow_polygon() const; | |
62 | ||
63 | QRegion arrow_region() const; | |
64 | ||
65 | QRect bubble_rect() const; | |
66 | ||
67 | QRegion bubble_region() const; | |
68 | ||
69 | QRegion popup_region() const; | |
70 | ||
71 | void reposition_widget(); | |
72 | ||
73 | private: | |
74 | void closeEvent(QCloseEvent*); | |
75 | ||
76 | void paintEvent(QPaintEvent*); | |
77 | ||
78 | void resizeEvent(QResizeEvent*); | |
79 | ||
80 | void mouseReleaseEvent(QMouseEvent *event); | |
81 | ||
82 | protected: | |
83 | void showEvent(QShowEvent *); | |
84 | ||
85 | Q_SIGNALS: | |
86 | void closed(); | |
87 | ||
88 | private: | |
89 | QPoint point_; | |
90 | Position pos_; | |
91 | }; | |
92 | ||
93 | } // namespace widgets | |
94 | } // namespace pv | |
95 | ||
96 | #endif // PULSEVIEW_PV_WIDGETS_POPUP_HPP |