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
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
/*
KSysGuard, the KDE System Guard
Copyright (c) 1999, 2000 Chris Schlaeger <[email protected]>
This program is free software; you can redistribute it and/or
modify it under the terms of version 2 of the GNU General Public
License as published by the Free Software Foundation
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
KSysGuard is currently maintained by Chris Schlaeger <[email protected]>.
Please do not commit any changes without consulting me first. Thanks!
*/
#include <assert.h>
#include <string.h>
#include <tqpainter.h>
#include <kdebug.h>
#include <kiconloader.h>
#include <ksgrd/StyleEngine.h>
#include "BarGraph.h"
BarGraph::BarGraph( TQWidget *parent, const char *name )
: TQWidget( parent, name )
{
// paintEvent covers whole widget so we use no background to avoid flicker
setBackgroundMode( NoBackground );
bars = 0;
minValue = 0.0;
maxValue = 100.0;
lowerLimit = upperLimit = 0.0;
lowerLimitActive = upperLimitActive = false;
normalColor = KSGRD::Style->firstForegroundColor();
alarmColor = KSGRD::Style->alarmColor();
backgroundColor = KSGRD::Style->backgroundColor();
fontSize = KSGRD::Style->fontSize();
// Anything smaller than this does not make sense.
setMinimumSize( 16, 16 );
setSizePolicy( TQSizePolicy( TQSizePolicy::Expanding,
TQSizePolicy::Expanding, false ) );
}
BarGraph::~BarGraph()
{
}
bool BarGraph::addBar( const TQString &footer )
{
samples.resize( bars + 1 );
samples[ bars++ ] = 0.0;
footers.append( footer );
return true;
}
bool BarGraph::removeBar( uint idx )
{
if ( idx >= bars ) {
kdDebug(1215) << "BarGraph::removeBar: idx " << idx << " out of range "
<< bars << endl;
return false;
}
samples.resize( --bars );
footers.remove( footers.at( idx ) );
update();
return true;
}
void BarGraph::updateSamples( const TQMemArray<double> &newSamples )
{
samples = newSamples;
update();
}
void BarGraph::changeRange( double min, double max )
{
minValue = min;
maxValue = max;
}
void BarGraph::paintEvent( TQPaintEvent* )
{
int w = width();
int h = height();
TQPixmap pm( w, h );
TQPainter p;
p.begin( &pm, this );
p.setFont( TQFont( p.font().family(), fontSize ) );
TQFontMetrics fm( p.font() );
pm.fill( backgroundColor );
/* Draw white line along the bottom and the right side of the
* widget to create a 3D like look. */
p.setPen( TQColor( colorGroup().light() ) );
p.drawLine( 0, h - 1, w - 1, h - 1 );
p.drawLine( w - 1, 0, w - 1, h - 1 );
p.setClipRect( 1, 1, w - 2, h - 2 );
if ( bars > 0 ) {
int barWidth = ( w - 2 ) / bars;
uint b;
/* Labels are only printed underneath the bars if the labels
* for all bars are smaller than the bar width. If a single
* label does not fit no label is shown. */
bool showLabels = true;
for ( b = 0; b < bars; b++ )
if ( fm.width( footers[ b ] ) > barWidth )
showLabels = false;
int barHeight;
if ( showLabels )
barHeight = h - 2 - ( 2 * fm.lineSpacing() ) - 2;
else
barHeight = h - 2;
for ( uint b = 0; b < bars; b++ ) {
int topVal = (int) ( (float)barHeight / maxValue *
( samples[ b ] - minValue ) );
/* TODO: This widget does not handle negative values properly. */
if ( topVal < 0 )
topVal = 0;
for ( int i = 0; i < barHeight && i < topVal; i += 2 ) {
if ( ( upperLimitActive && samples[ b ] > upperLimit ) ||
( lowerLimitActive && samples[ b ] < lowerLimit ) )
p.setPen( alarmColor.light( static_cast<int>( 30 + ( 70.0 /
( barHeight + 1 ) * i ) ) ) );
else
p.setPen( normalColor.light( static_cast<int>( 30 + ( 70.0 /
( barHeight + 1 ) * i ) ) ) );
p.drawLine( b * barWidth + 3, barHeight - i, ( b + 1 ) * barWidth - 3,
barHeight - i );
}
if ( ( upperLimitActive && samples[ b ] > upperLimit ) ||
( lowerLimitActive && samples[ b ] < lowerLimit ) )
p.setPen( alarmColor );
else
p.setPen( normalColor );
if ( showLabels ) {
p.drawText( b * barWidth + 3, h - ( 2 * fm.lineSpacing() ) - 2,
barWidth - 2 * 3, fm.lineSpacing(), TQt::AlignCenter,
footers[ b ] );
p.drawText( b * barWidth + 3, h - fm.lineSpacing() - 2,
barWidth - 2 * 3, fm.lineSpacing(), TQt::AlignCenter,
TQString( "%1" ).arg( samples[ b ] ) );
}
}
}
p.end();
bitBlt( this, 0, 0, &pm );
}
#include "BarGraph.moc"
|
