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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_TRACE_H | |
22 | #define PULSEVIEW_PV_TRACE_H | |
23 | ||
24 | #include <QColor> | |
25 | #include <QPainter> | |
26 | #include <QPen> | |
27 | #include <QRect> | |
28 | #include <QString> | |
29 | ||
30 | #include <stdint.h> | |
31 | ||
32 | #include "selectableitem.h" | |
33 | ||
34 | namespace pv { | |
35 | ||
36 | class SigSession; | |
37 | ||
38 | namespace view { | |
39 | ||
40 | class View; | |
41 | ||
42 | class Trace : public SelectableItem | |
43 | { | |
44 | Q_OBJECT | |
45 | ||
46 | private: | |
47 | static const QPen AxisPen; | |
48 | static const int LabelHitPadding; | |
49 | ||
50 | protected: | |
51 | Trace(SigSession &session, QString name); | |
52 | ||
53 | public: | |
54 | /** | |
55 | * Gets the name of this signal. | |
56 | */ | |
57 | QString get_name() const; | |
58 | ||
59 | /** | |
60 | * Sets the name of the signal. | |
61 | */ | |
62 | virtual void set_name(QString name); | |
63 | ||
64 | /** | |
65 | * Get the colour of the signal. | |
66 | */ | |
67 | QColor get_colour() const; | |
68 | ||
69 | /** | |
70 | * Set the colour of the signal. | |
71 | */ | |
72 | void set_colour(QColor colour); | |
73 | ||
74 | /** | |
75 | * Gets the vertical layout offset of this signal. | |
76 | */ | |
77 | int get_v_offset() const; | |
78 | ||
79 | /** | |
80 | * Sets the vertical layout offset of this signal. | |
81 | */ | |
82 | void set_v_offset(int v_offset); | |
83 | ||
84 | /** | |
85 | * Returns true if the trace is visible and enabled. | |
86 | */ | |
87 | virtual bool enabled() const = 0; | |
88 | ||
89 | virtual void set_view(pv::view::View *view); | |
90 | ||
91 | /** | |
92 | * Paints the background layer of the trace with a QPainter | |
93 | * @param p the QPainter to paint into. | |
94 | * @param left the x-coordinate of the left edge of the signal | |
95 | * @param right the x-coordinate of the right edge of the signal | |
96 | **/ | |
97 | virtual void paint_back(QPainter &p, int left, int right); | |
98 | ||
99 | /** | |
100 | * Paints the mid-layer of the trace with a QPainter | |
101 | * @param p the QPainter to paint into. | |
102 | * @param left the x-coordinate of the left edge of the signal | |
103 | * @param right the x-coordinate of the right edge of the signal | |
104 | **/ | |
105 | virtual void paint_mid(QPainter &p, int left, int right); | |
106 | ||
107 | /** | |
108 | * Paints the foreground layer of the trace with a QPainter | |
109 | * @param p the QPainter to paint into. | |
110 | * @param left the x-coordinate of the left edge of the signal | |
111 | * @param right the x-coordinate of the right edge of the signal | |
112 | **/ | |
113 | virtual void paint_fore(QPainter &p, int left, int right); | |
114 | ||
115 | /** | |
116 | * Paints the signal label into a QGLWidget. | |
117 | * @param p the QPainter to paint into. | |
118 | * @param right the x-coordinate of the right edge of the header | |
119 | * area. | |
120 | * @param hover true if the label is being hovered over by the mouse. | |
121 | */ | |
122 | virtual void paint_label(QPainter &p, int right, bool hover); | |
123 | ||
124 | /** | |
125 | * Determines if a point is in the header label rect. | |
126 | * @param left the x-coordinate of the left edge of the header | |
127 | * area. | |
128 | * @param right the x-coordinate of the right edge of the header | |
129 | * area. | |
130 | * @param point the point to test. | |
131 | */ | |
132 | bool pt_in_label_rect(int left, int right, const QPoint &point); | |
133 | ||
134 | virtual QMenu* create_context_menu(QWidget *parent); | |
135 | ||
136 | pv::widgets::Popup* create_popup(QWidget *parent); | |
137 | ||
138 | /** | |
139 | * Gets the y-offset of the axis. | |
140 | */ | |
141 | int get_y() const; | |
142 | ||
143 | protected: | |
144 | /** | |
145 | * Gets the text colour. | |
146 | * @remarks This colour is computed by comparing the lightness | |
147 | * of the trace colour against a threshold to determine whether | |
148 | * white or black would be more visible. | |
149 | */ | |
150 | QColor get_text_colour() const; | |
151 | ||
152 | /** | |
153 | * Paints a zero axis across the viewport. | |
154 | * @param p the QPainter to paint into. | |
155 | * @param y the y-offset of the axis. | |
156 | * @param left the x-coordinate of the left edge of the view. | |
157 | * @param right the x-coordinate of the right edge of the view. | |
158 | */ | |
159 | void paint_axis(QPainter &p, int y, int left, int right); | |
160 | ||
161 | virtual void populate_popup_form(QWidget *parent, QFormLayout *form); | |
162 | ||
163 | private: | |
164 | ||
165 | /** | |
166 | * Computes an caches the size of the label text. | |
167 | */ | |
168 | void compute_text_size(QPainter &p); | |
169 | ||
170 | /** | |
171 | * Computes the outline rectangle of a label. | |
172 | * @param p the QPainter to lay out text with. | |
173 | * @param right the x-coordinate of the right edge of the header | |
174 | * area. | |
175 | * @return Returns the rectangle of the signal label. | |
176 | */ | |
177 | QRectF get_label_rect(int right); | |
178 | ||
179 | private slots: | |
180 | void on_action_set_name_triggered(); | |
181 | ||
182 | void on_action_set_colour_triggered(); | |
183 | ||
184 | void on_text_changed(const QString &text); | |
185 | ||
186 | signals: | |
187 | void text_changed(); | |
188 | ||
189 | protected: | |
190 | pv::SigSession &_session; | |
191 | pv::view::View *_view; | |
192 | ||
193 | QString _name; | |
194 | QColor _colour; | |
195 | int _v_offset; | |
196 | ||
197 | QSizeF _text_size; | |
198 | }; | |
199 | ||
200 | } // namespace view | |
201 | } // namespace pv | |
202 | ||
203 | #endif // PULSEVIEW_PV_TRACEL_H |