blob: e7a20fafdbe3df2b1e38ba1ad50cc647057cdb5f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/***************************************************************************
wdisplay.cpp - description
-------------------
begin : Fri Jun 21 2002
copyright : (C) 2002 by Tue & Ken Haste Andersen
email : haste@diku.dk
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "widget/wdisplay.h"
#include <QPainter>
#include <QPaintEvent>
#include <QtDebug>
#include <QPixmap>
#include "widget/wpixmapstore.h"
WDisplay::WDisplay(QWidget * parent)
: WWidget(parent) {
setPositions(0);
}
WDisplay::~WDisplay() {
resetPositions();
}
void WDisplay::setup(QDomNode node) {
// Number of states
setPositions(selectNodeInt(node, "NumberStates"));
// Load knob pixmaps
QString path = selectNodeQString(node, "Path");
for (int i = 0; i < m_pixmaps.size(); ++i) {
setPixmap(i, getPath(path.arg(i)));
}
}
void WDisplay::setPositions(int iNoPos) {
resetPositions();
if (iNoPos < 0) {
qWarning() << "Negative NumberStates for Display.";
iNoPos = 0;
}
// QVector inserts NULLs for the new pixmaps.
m_pixmaps.resize(iNoPos);
}
void WDisplay::resetPositions() {
for (int i = 0; i < m_pixmaps.size(); ++i) {
QPixmap* pPixmap = m_pixmaps[i];
if (pPixmap) {
WPixmapStore::deletePixmap(pPixmap);
}
}
m_pixmaps.resize(0);
}
void WDisplay::setPixmap(int iPos, const QString& filename) {
if (iPos < 0 || iPos >= m_pixmaps.size()) {
return;
}
m_pixmaps[iPos] = WPixmapStore::getPixmap(filename);
if (!m_pixmaps[iPos])
qDebug() << "WDisplay: Error loading pixmap" << filename;
else
setFixedSize(m_pixmaps[iPos]->size());
}
void WDisplay::paintEvent(QPaintEvent* ) {
int idx = static_cast<int>(
m_value * static_cast<double>(m_pixmaps.size()) / 128.0);
if (m_pixmaps.empty()) {
return;
}
if (idx < 0) {
idx = 0;
} else if (idx >= m_pixmaps.size()) {
idx = m_pixmaps.size() - 1;
}
QPixmap* pPixmap = m_pixmaps[idx];
if (pPixmap) {
QPainter p(this);
p.drawPixmap(0, 0, *pPixmap);
}
}
|
