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e0e90d80 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/>. |
e0e90d80 JH |
18 | */ |
19 | ||
8845be3c UH |
20 | #ifndef PULSEVIEW_PV_VIEWS_TRACE_VIEWITEM_HPP |
21 | #define PULSEVIEW_PV_VIEWS_TRACE_VIEWITEM_HPP | |
e0e90d80 JH |
22 | |
23 | #include <list> | |
24 | ||
74bf6666 | 25 | #include <QMouseEvent> |
d09674d4 | 26 | #include <QPen> |
be843692 | 27 | #include <QPoint> |
2a2512b2 | 28 | |
d4e39570 JH |
29 | #include "viewitempaintparams.hpp" |
30 | ||
e0e90d80 | 31 | class QAction; |
9b6378f1 JH |
32 | class QMenu; |
33 | class QWidget; | |
e0e90d80 JH |
34 | |
35 | namespace pv { | |
a28a212c JH |
36 | |
37 | namespace widgets { | |
38 | class Popup; | |
39 | } | |
40 | ||
f4e57597 | 41 | namespace views { |
1573bf16 | 42 | namespace trace { |
e0e90d80 | 43 | |
c373f828 JH |
44 | class ViewItemOwner; |
45 | ||
26e3af6b | 46 | class ViewItem : public QObject |
e0e90d80 | 47 | { |
2a2512b2 JH |
48 | Q_OBJECT |
49 | ||
819e2e95 | 50 | public: |
ec39632d | 51 | static const QSizeF LabelPadding; |
d09674d4 JH |
52 | static const int HighlightRadius; |
53 | ||
f1283456 | 54 | public: |
26e3af6b | 55 | ViewItem(); |
f1283456 | 56 | |
096fb584 JH |
57 | /** |
58 | * Returns true if the item is visible and enabled. | |
59 | */ | |
60 | virtual bool enabled() const = 0; | |
61 | ||
cbd9ec7f SA |
62 | /** |
63 | * Returns true if the item may be selected. | |
64 | */ | |
65 | virtual bool is_selectable(QPoint pos) const; | |
66 | ||
f1283456 | 67 | /** |
7ccd5a64 | 68 | * Returns true if the item has been selected by the user. |
f1283456 JH |
69 | */ |
70 | bool selected() const; | |
71 | ||
72 | /** | |
73 | * Selects or deselects the signal. | |
74 | */ | |
365ae4e6 | 75 | virtual void select(bool select = true); |
f1283456 | 76 | |
a009d219 | 77 | /** |
223d0c37 | 78 | * Returns true if the item may be dragged/moved. |
a009d219 | 79 | */ |
119c5c23 | 80 | virtual bool is_draggable(QPoint pos) const; |
a009d219 | 81 | |
0dda6fe5 JH |
82 | /** |
83 | * Returns true if the item is being dragged. | |
84 | */ | |
85 | bool dragging() const; | |
86 | ||
0dda6fe5 JH |
87 | /** |
88 | * Sets this item into the dragged state. | |
89 | */ | |
90 | void drag(); | |
91 | ||
92 | /** | |
93 | * Sets this item into the un-dragged state. | |
94 | */ | |
bf80cfa4 | 95 | virtual void drag_release(); |
0dda6fe5 | 96 | |
23e75650 JH |
97 | /** |
98 | * Drags the item to a delta relative to the drag point. | |
99 | * @param delta the offset from the drag point. | |
100 | */ | |
101 | virtual void drag_by(const QPoint &delta) = 0; | |
102 | ||
0dda6fe5 JH |
103 | /** |
104 | * Get the drag point. | |
be717066 | 105 | * @param rect the rectangle of the widget area. |
0dda6fe5 | 106 | */ |
a3d5a7c7 | 107 | virtual QPoint drag_point(const QRect &rect) const = 0; |
0dda6fe5 | 108 | |
4a5c385e JH |
109 | /** |
110 | * Computes the outline rectangle of a label. | |
111 | * @param rect the rectangle of the header area. | |
112 | * @return Returns the rectangle of the signal label. | |
3cd51b50 | 113 | * @remarks The default implementation returns an empty rectangle. |
4a5c385e | 114 | */ |
3cd51b50 | 115 | virtual QRectF label_rect(const QRectF &rect) const; |
4a5c385e | 116 | |
7708eb92 JH |
117 | /** |
118 | * Computes the outline rectangle of the viewport hit-box. | |
119 | * @param rect the rectangle of the viewport area. | |
120 | * @return Returns the rectangle of the hit-box. | |
121 | * @remarks The default implementation returns an empty hit-box. | |
122 | */ | |
cbf0f87e | 123 | virtual QRectF hit_box_rect(const ViewItemPaintParams &pp) const; |
7708eb92 | 124 | |
49028d6c JH |
125 | /** |
126 | * Paints the signal label. | |
127 | * @param p the QPainter to paint into. | |
128 | * @param rect the rectangle of the header area. | |
129 | * @param hover true if the label is being hovered over by the mouse. | |
130 | */ | |
fa792224 | 131 | virtual void paint_label(QPainter &p, const QRect &rect, bool hover); |
49028d6c | 132 | |
d4e39570 JH |
133 | /** |
134 | * Paints the background layer of the item with a QPainter | |
135 | * @param p the QPainter to paint into. | |
136 | * @param pp the painting parameters object to paint with. | |
223d0c37 | 137 | */ |
60938e04 | 138 | virtual void paint_back(QPainter &p, ViewItemPaintParams &pp); |
d4e39570 JH |
139 | |
140 | /** | |
141 | * Paints the mid-layer of the item with a QPainter | |
142 | * @param p the QPainter to paint into. | |
143 | * @param pp the painting parameters object to paint with. | |
223d0c37 | 144 | */ |
60938e04 | 145 | virtual void paint_mid(QPainter &p, ViewItemPaintParams &pp); |
d4e39570 JH |
146 | |
147 | /** | |
148 | * Paints the foreground layer of the item with a QPainter | |
149 | * @param p the QPainter to paint into. | |
150 | * @param pp the painting parameters object to paint with. | |
223d0c37 | 151 | */ |
60938e04 | 152 | virtual void paint_fore(QPainter &p, ViewItemPaintParams &pp); |
d4e39570 | 153 | |
d8d724cc | 154 | /** |
641574bc SA |
155 | * Gets the text color. |
156 | * @remarks This color is computed by comparing the lightness | |
157 | * of the trace color against a threshold to determine whether | |
d8d724cc JH |
158 | * white or black would be more visible. |
159 | */ | |
641574bc | 160 | static QColor select_text_color(QColor background); |
d8d724cc | 161 | |
a55c544b | 162 | public: |
9e773fec | 163 | virtual QMenu* create_header_context_menu(QWidget *parent); |
9b6378f1 | 164 | |
be843692 | 165 | virtual QMenu* create_view_context_menu(QWidget *parent, QPoint &click_pos); |
d9b55cc8 | 166 | |
0f2f14a4 | 167 | virtual pv::widgets::Popup* create_popup(QWidget *parent); |
a28a212c | 168 | |
5ed1adf5 JH |
169 | virtual void delete_pressed(); |
170 | ||
af33d4cb SA |
171 | virtual void hover_point_changed(const QPoint &hp); |
172 | ||
74bf6666 SA |
173 | /** |
174 | * Handles left mouse button press events. | |
175 | * @param event the mouse event that triggered this handler. | |
176 | */ | |
177 | virtual void mouse_left_press_event(const QMouseEvent* event); | |
178 | ||
d09674d4 JH |
179 | protected: |
180 | static QPen highlight_pen(); | |
181 | ||
9b6378f1 | 182 | protected: |
8dbbc7f0 | 183 | QWidget *context_parent_; |
23e75650 | 184 | QPoint drag_point_; |
0c238923 JH |
185 | |
186 | private: | |
8dbbc7f0 | 187 | bool selected_; |
e0e90d80 JH |
188 | }; |
189 | ||
1573bf16 | 190 | } // namespace trace |
f4e57597 | 191 | } // namespace views |
e0e90d80 JH |
192 | } // namespace pv |
193 | ||
8845be3c | 194 | #endif // PULSEVIEW_PV_VIEWS_TRACE_VIEWITEM_HPP |