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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, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #ifndef PULSEVIEW_PV_WIDGETS_POPUP_H | |
22 | #define PULSEVIEW_PV_WIDGETS_POPUP_H | |
23 | ||
24 | #include <QWidget> | |
25 | ||
26 | namespace pv { | |
27 | namespace widgets { | |
28 | ||
29 | class Popup : public QWidget | |
30 | { | |
31 | Q_OBJECT | |
32 | ||
33 | public: | |
34 | enum Position | |
35 | { | |
36 | Right, | |
37 | Top, | |
38 | Left, | |
39 | Bottom | |
40 | }; | |
41 | ||
42 | private: | |
43 | static const unsigned int ArrowLength; | |
44 | static const unsigned int ArrowOverlap; | |
45 | static const unsigned int MarginWidth; | |
46 | ||
47 | public: | |
48 | Popup(QWidget *parent); | |
49 | ||
50 | const QPoint& point() const; | |
51 | Position position() const; | |
52 | ||
53 | void set_position(const QPoint point, Position pos); | |
54 | ||
55 | bool eventFilter(QObject *obj, QEvent *evt); | |
56 | ||
57 | void show(); | |
58 | ||
59 | private: | |
60 | bool space_for_arrow() const; | |
61 | ||
62 | QPolygon arrow_polygon() const; | |
63 | ||
64 | QRegion arrow_region() const; | |
65 | ||
66 | QRect bubble_rect() const; | |
67 | ||
68 | QRegion bubble_region() const; | |
69 | ||
70 | QRegion popup_region() const; | |
71 | ||
72 | void reposition_widget(); | |
73 | ||
74 | private: | |
75 | void closeEvent(QCloseEvent*); | |
76 | ||
77 | void paintEvent(QPaintEvent*); | |
78 | ||
79 | void resizeEvent(QResizeEvent*); | |
80 | ||
81 | void mouseReleaseEvent(QMouseEvent *e); | |
82 | ||
83 | protected: | |
84 | void showEvent(QShowEvent *e); | |
85 | ||
86 | Q_SIGNALS: | |
87 | void closed(); | |
88 | ||
89 | private: | |
90 | QPoint point_; | |
91 | Position pos_; | |
92 | }; | |
93 | ||
94 | } // namespace widgets | |
95 | } // namespace pv | |
96 | ||
97 | #endif // PULSEVIEW_PV_WIDGETS_POPUP_H |