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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2012 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 | #include <boost/shared_ptr.hpp> | |
22 | ||
23 | #include <QPainter> | |
24 | #include <QRect> | |
25 | #include <QString> | |
26 | ||
27 | #include <stdint.h> | |
28 | ||
29 | namespace pv { | |
30 | ||
31 | class SignalData; | |
32 | ||
33 | class Signal | |
34 | { | |
35 | private: | |
36 | static const QSizeF LabelPadding; | |
37 | static const int LabelHitPadding; | |
38 | ||
39 | protected: | |
40 | Signal(QString name); | |
41 | ||
42 | public: | |
43 | /** | |
44 | * Gets the name of this signal. | |
45 | */ | |
46 | QString get_name() const; | |
47 | ||
48 | /** | |
49 | * Sets the name of the signal. | |
50 | */ | |
51 | void set_name(QString name); | |
52 | ||
53 | /** | |
54 | * Paints the signal with a QPainter | |
55 | * @param p the QPainter to paint into. | |
56 | * @param rect the rectangular area to draw the trace into. | |
57 | * @param scale the scale in seconds per pixel. | |
58 | * @param offset the time to show at the left hand edge of | |
59 | * the view in seconds. | |
60 | **/ | |
61 | virtual void paint(QPainter &p, const QRect &rect, double scale, | |
62 | double offset) = 0; | |
63 | ||
64 | ||
65 | /** | |
66 | * Paints the signal label into a QGLWidget. | |
67 | * @param p the QPainter to paint into. | |
68 | * @param rect the rectangular area to draw the label into. | |
69 | * @param hover true if the label is being hovered over by the mouse. | |
70 | */ | |
71 | virtual void paint_label(QPainter &p, const QRect &rect, | |
72 | bool hover); | |
73 | ||
74 | /** | |
75 | * Determines if a point is in the header label rect. | |
76 | * @param rect the rectangular area to draw the label into. | |
77 | * @param point the point to test. | |
78 | */ | |
79 | bool pt_in_label_rect(const QRect &rect, const QPoint &point); | |
80 | ||
81 | private: | |
82 | ||
83 | /** | |
84 | * Computes an caches the size of the label text. | |
85 | */ | |
86 | void compute_text_size(QPainter &p); | |
87 | ||
88 | /** | |
89 | * Computes the outline rectangle of a label. | |
90 | * @param p the QPainter to lay out text with. | |
91 | * @param rect The rectangle of the signal header. | |
92 | * @return Returns the rectangle of the signal label. | |
93 | */ | |
94 | QRectF get_label_rect(const QRect &rect); | |
95 | ||
96 | protected: | |
97 | /** | |
98 | * Get the colour of the logic signal | |
99 | */ | |
100 | virtual QColor get_colour() const = 0; | |
101 | ||
102 | /** | |
103 | * When painting into the rectangle, calculate the y | |
104 | * offset of the zero point. | |
105 | **/ | |
106 | virtual int get_nominal_offset(const QRect &rect) const = 0; | |
107 | ||
108 | protected: | |
109 | QString _name; | |
110 | QSizeF _text_size; | |
111 | }; | |
112 | ||
113 | } // namespace pv |