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40aca27e JH |
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 | ||
7a01bd36 JH |
21 | #ifndef PULSEVIEW_PV_VIEWWIDGET_HPP |
22 | #define PULSEVIEW_PV_VIEWWIDGET_HPP | |
40aca27e | 23 | |
e9e4e5e7 JH |
24 | #include <memory> |
25 | ||
40aca27e JH |
26 | #include <QWidget> |
27 | ||
c9743553 JH |
28 | class QTouchEvent; |
29 | ||
40aca27e JH |
30 | namespace pv { |
31 | namespace view { | |
32 | ||
219b3ab9 SA |
33 | enum ViewType { |
34 | TraceView, | |
35 | TabularDecodeView | |
36 | }; | |
37 | ||
40aca27e | 38 | class View; |
e9e4e5e7 | 39 | class ViewItem; |
40aca27e JH |
40 | |
41 | class ViewWidget : public QWidget | |
42 | { | |
43 | Q_OBJECT | |
44 | ||
45 | protected: | |
46 | ViewWidget(View &parent); | |
47 | ||
e8b969a9 JH |
48 | /** |
49 | * Indicates when a view item is being hovered over. | |
50 | * @param item The item that is being hovered over, or @c nullptr | |
51 | * if no view item is being hovered over. | |
52 | * @remarks the default implementation does nothing. | |
53 | */ | |
54 | virtual void item_hover( | |
55 | const std::shared_ptr<pv::view::ViewItem> &item); | |
56 | ||
e9e4e5e7 JH |
57 | /** |
58 | * Indicates the event an a view item has been clicked. | |
59 | * @param item the view item that has been clicked. | |
60 | * @remarks the default implementation does nothing. | |
61 | */ | |
62 | virtual void item_clicked( | |
63 | const std::shared_ptr<pv::view::ViewItem> &item); | |
64 | ||
b434cbaf JH |
65 | /** |
66 | * Returns true if the selection of row items allows dragging. | |
67 | * @return Returns true if the drag is acceptable. | |
68 | */ | |
69 | bool accept_drag() const; | |
70 | ||
1f1edc09 JH |
71 | /** |
72 | * Returns true if the mouse button is down. | |
73 | */ | |
74 | bool mouse_down() const; | |
75 | ||
1dffa582 JH |
76 | /** |
77 | * Drag the dragging items by the delta offset. | |
78 | * @param delta the drag offset in pixels. | |
79 | */ | |
80 | void drag_items(const QPoint &delta); | |
81 | ||
28290534 JH |
82 | /** |
83 | * Sets this item into the dragged state. | |
84 | */ | |
85 | virtual void drag(); | |
86 | ||
87 | /** | |
88 | * Drag the background by the delta offset. | |
89 | * @param delta the drag offset in pixels. | |
90 | * @remarks The default implementation does nothing. | |
91 | */ | |
92 | virtual void drag_by(const QPoint &delta); | |
93 | ||
94 | /** | |
95 | * Sets this item into the un-dragged state. | |
96 | */ | |
97 | virtual void drag_release(); | |
98 | ||
e9e4e5e7 JH |
99 | /** |
100 | * Gets the items in the view widget. | |
101 | */ | |
102 | virtual std::vector< std::shared_ptr<pv::view::ViewItem> > items() = 0; | |
103 | ||
104 | /** | |
105 | * Gets the first view item which has a hit-box that contains @c pt . | |
106 | * @param pt the point to search with. | |
107 | * @return the view item that has been found, or and empty | |
108 | * @c shared_ptr if no item was found. | |
109 | */ | |
110 | virtual std::shared_ptr<pv::view::ViewItem> get_mouse_over_item( | |
111 | const QPoint &pt) = 0; | |
112 | ||
113 | /** | |
114 | * Handles left mouse button press events. | |
115 | * @param event the mouse event that triggered this handler. | |
116 | */ | |
117 | void mouse_left_press_event(QMouseEvent *event); | |
118 | ||
119 | /** | |
120 | * Handles left mouse button release events. | |
121 | * @param event the mouse event that triggered this handler. | |
122 | */ | |
123 | void mouse_left_release_event(QMouseEvent *event); | |
124 | ||
c9743553 JH |
125 | /** |
126 | * Handles touch begin update and end events. | |
127 | * @param e the event that triggered this handler. | |
128 | */ | |
d9ea9628 | 129 | virtual bool touch_event(QTouchEvent *event); |
c9743553 | 130 | |
e9e4e5e7 | 131 | protected: |
c9743553 JH |
132 | bool event(QEvent *event); |
133 | ||
d9ea9628 | 134 | void mousePressEvent(QMouseEvent *event); |
e9e4e5e7 | 135 | void mouseReleaseEvent(QMouseEvent *event); |
d9ea9628 | 136 | void mouseMoveEvent(QMouseEvent *event); |
e9e4e5e7 JH |
137 | |
138 | void leaveEvent(QEvent *event); | |
139 | ||
140 | public Q_SLOTS: | |
141 | void clear_selection(); | |
142 | ||
143 | Q_SIGNALS: | |
144 | void selection_changed(); | |
145 | ||
40aca27e JH |
146 | protected: |
147 | pv::view::View &view_; | |
e9e4e5e7 JH |
148 | QPoint mouse_point_; |
149 | QPoint mouse_down_point_; | |
150 | std::shared_ptr<ViewItem> mouse_down_item_; | |
803cdac4 | 151 | bool item_dragging_; |
40aca27e JH |
152 | }; |
153 | ||
154 | } // namespace view | |
155 | } // namespace pv | |
156 | ||
7a01bd36 | 157 | #endif // PULSEVIEW_PV_VIEWWIDGET_HPP |