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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 | |
efdec55a | 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
40aca27e JH |
18 | */ |
19 | ||
8845be3c UH |
20 | #ifndef PULSEVIEW_PV_VIEWS_TRACE_VIEWWIDGET_HPP |
21 | #define PULSEVIEW_PV_VIEWS_TRACE_VIEWWIDGET_HPP | |
40aca27e | 22 | |
e9e4e5e7 JH |
23 | #include <memory> |
24 | ||
119c5c23 | 25 | #include <QPoint> |
40aca27e JH |
26 | #include <QWidget> |
27 | ||
4eba9990 | 28 | #include <pv/util.hpp> |
29 | ||
6f925ba9 UH |
30 | using std::shared_ptr; |
31 | using std::vector; | |
32 | ||
c9743553 JH |
33 | class QTouchEvent; |
34 | ||
40aca27e | 35 | namespace pv { |
f4e57597 | 36 | namespace views { |
1573bf16 | 37 | namespace trace { |
219b3ab9 | 38 | |
40aca27e | 39 | class View; |
e9e4e5e7 | 40 | class ViewItem; |
40aca27e JH |
41 | |
42 | class ViewWidget : public QWidget | |
43 | { | |
44 | Q_OBJECT | |
45 | ||
46 | protected: | |
47 | ViewWidget(View &parent); | |
48 | ||
e8b969a9 JH |
49 | /** |
50 | * Indicates when a view item is being hovered over. | |
51 | * @param item The item that is being hovered over, or @c nullptr | |
52 | * if no view item is being hovered over. | |
53 | * @remarks the default implementation does nothing. | |
54 | */ | |
119c5c23 | 55 | virtual void item_hover(const shared_ptr<ViewItem> &item, QPoint pos); |
e8b969a9 | 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 | */ | |
6f925ba9 | 62 | virtual void item_clicked(const shared_ptr<ViewItem> &item); |
e9e4e5e7 | 63 | |
b434cbaf JH |
64 | /** |
65 | * Returns true if the selection of row items allows dragging. | |
66 | * @return Returns true if the drag is acceptable. | |
67 | */ | |
68 | bool accept_drag() const; | |
69 | ||
1f1edc09 JH |
70 | /** |
71 | * Returns true if the mouse button is down. | |
72 | */ | |
73 | bool mouse_down() const; | |
74 | ||
1dffa582 JH |
75 | /** |
76 | * Drag the dragging items by the delta offset. | |
77 | * @param delta the drag offset in pixels. | |
78 | */ | |
79 | void drag_items(const QPoint &delta); | |
80 | ||
28290534 JH |
81 | /** |
82 | * Sets this item into the dragged state. | |
83 | */ | |
84 | virtual void drag(); | |
85 | ||
86 | /** | |
87 | * Drag the background by the delta offset. | |
88 | * @param delta the drag offset in pixels. | |
89 | * @remarks The default implementation does nothing. | |
90 | */ | |
91 | virtual void drag_by(const QPoint &delta); | |
92 | ||
93 | /** | |
94 | * Sets this item into the un-dragged state. | |
95 | */ | |
96 | virtual void drag_release(); | |
97 | ||
e9e4e5e7 JH |
98 | /** |
99 | * Gets the items in the view widget. | |
100 | */ | |
6f925ba9 | 101 | virtual vector< shared_ptr<ViewItem> > items() = 0; |
e9e4e5e7 JH |
102 | |
103 | /** | |
104 | * Gets the first view item which has a hit-box that contains @c pt . | |
105 | * @param pt the point to search with. | |
106 | * @return the view item that has been found, or and empty | |
107 | * @c shared_ptr if no item was found. | |
108 | */ | |
6f925ba9 | 109 | virtual shared_ptr<ViewItem> get_mouse_over_item(const QPoint &pt) = 0; |
e9e4e5e7 JH |
110 | |
111 | /** | |
112 | * Handles left mouse button press events. | |
113 | * @param event the mouse event that triggered this handler. | |
114 | */ | |
115 | void mouse_left_press_event(QMouseEvent *event); | |
116 | ||
117 | /** | |
118 | * Handles left mouse button release events. | |
119 | * @param event the mouse event that triggered this handler. | |
120 | */ | |
121 | void mouse_left_release_event(QMouseEvent *event); | |
122 | ||
c9743553 JH |
123 | /** |
124 | * Handles touch begin update and end events. | |
125 | * @param e the event that triggered this handler. | |
126 | */ | |
d9ea9628 | 127 | virtual bool touch_event(QTouchEvent *event); |
c9743553 | 128 | |
e9e4e5e7 | 129 | protected: |
c9743553 JH |
130 | bool event(QEvent *event); |
131 | ||
d9ea9628 | 132 | void mousePressEvent(QMouseEvent *event); |
e9e4e5e7 | 133 | void mouseReleaseEvent(QMouseEvent *event); |
d9ea9628 | 134 | void mouseMoveEvent(QMouseEvent *event); |
e9e4e5e7 | 135 | |
710c2a18 | 136 | void keyPressEvent(QKeyEvent *event); |
137 | void keyReleaseEvent(QKeyEvent *event); | |
138 | ||
e9e4e5e7 JH |
139 | void leaveEvent(QEvent *event); |
140 | ||
141 | public Q_SLOTS: | |
142 | void clear_selection(); | |
143 | ||
144 | Q_SIGNALS: | |
145 | void selection_changed(); | |
146 | ||
40aca27e | 147 | protected: |
1573bf16 | 148 | pv::views::trace::View &view_; |
e9e4e5e7 JH |
149 | QPoint mouse_point_; |
150 | QPoint mouse_down_point_; | |
4eba9990 | 151 | pv::util::Timestamp mouse_down_offset_; |
6f925ba9 | 152 | shared_ptr<ViewItem> mouse_down_item_; |
9f094349 SA |
153 | |
154 | /// Keyboard modifiers that were active when mouse was last moved or clicked | |
155 | Qt::KeyboardModifiers mouse_modifiers_; | |
156 | ||
803cdac4 | 157 | bool item_dragging_; |
40aca27e JH |
158 | }; |
159 | ||
1573bf16 | 160 | } // namespace trace |
f4e57597 | 161 | } // namespace views |
40aca27e JH |
162 | } // namespace pv |
163 | ||
8845be3c | 164 | #endif // PULSEVIEW_PV_VIEWS_TRACE_VIEWWIDGET_HPP |