blob: 43d4d3172e8909dcd44f3550afa9df00da631517 (
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
|
/***************************************************************************
ratiowidget.h - paint a ratio
-------------------
begin : 2004/06/03
copyright : (C) 2004 by Sebastian Stein
email : seb.kde@hpfsc.de
***************************************************************************/
/***************************************************************************
* *
* 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 "ratiowidget.h"
#include "ratiowidget.moc"
/* these includes are needed for Qt support */
#include <qpainter.h>
RatioWidget::RatioWidget(QWidget * parent = 0, const char * name = 0,
const ratio para_ratio = *new ratio()) :
FractionBaseWidget(parent, name), m_ratio(para_ratio)
{
#ifdef DEBUG
kdDebug() << "constructor RatioWidget" << endl;
#endif
}
RatioWidget::~RatioWidget()
{
#ifdef DEBUG
kdDebug() << "destructor RatioWidget" << endl;
#endif
}
void RatioWidget::setRatio(const ratio para_ratio)
{
m_ratio = para_ratio;
update();
}
void RatioWidget::paintEvent(QPaintEvent* /* p_paintEvent */)
{
// our x position, we paint from left to right;
// we don't want to start directly on the border, so add the margin
int x_pos = _MARGIN_X;
// start the painter
QPainter paint(this);
// ratios and operation signs are painted with the same font
paint.setFont(m_font);
// set the pen for painting
QPen pen(Qt::SolidLine);
pen.setWidth(0);
paint.setPen(pen);
// get the font height; the font height doesn't change while painting
QFontMetrics fm(paint.fontMetrics());
// now we can correctly set the height of the widget
setMinimumHeight(2 * fm.lineSpacing() + 10);
setMaximumHeight(2 * fm.lineSpacing() + 10);
// result as normal ratio
paintRatio(paint, m_ratio, x_pos, fm, false);
// stop the painter
paint.end();
// the space we needed for painting is the minimum width of the widget
setMinimumWidth(x_pos);
return;
}
|
