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path: root/noncore/applets/memoryapplet/graph.cpp
authormickeyl <mickeyl>2005-01-29 09:35:52 (UTC)
committer mickeyl <mickeyl>2005-01-29 09:35:52 (UTC)
commitd4cf8c6020c46e5dc97b75f3a9781ddc15416b3a (patch) (unidiff)
treec17be6e75e277c3fa0378f352f45766f75031cdb /noncore/applets/memoryapplet/graph.cpp
parentf85af28663814f3262f5ecfcd20a4b4f67c23067 (diff)
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fix 1505 and suck sysinfo files into the tree instead of cross referencing
eventually we may find that graph and load are of universal usage, then they should appear in some kind of library
Diffstat (limited to 'noncore/applets/memoryapplet/graph.cpp') (more/less context) (ignore whitespace changes)
-rw-r--r--noncore/applets/memoryapplet/graph.cpp183
1 files changed, 183 insertions, 0 deletions
diff --git a/noncore/applets/memoryapplet/graph.cpp b/noncore/applets/memoryapplet/graph.cpp
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1/**********************************************************************
2** Copyright (C) 2000 Trolltech AS. All rights reserved.
3**
4** This file is part of Qtopia Environment.
5**
6** This file may be distributed and/or modified under the terms of the
7** GNU General Public License version 2 as published by the Free Software
8** Foundation and appearing in the file LICENSE.GPL included in the
9** packaging of this file.
10**
11** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
12** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
13**
14** See http://www.trolltech.com/gpl/ for GPL licensing information.
15**
16** Contact info@trolltech.com if any conditions of this licensing are
17** not clear to you.
18**
19**********************************************************************/
20
21#include <qpainter.h>
22#include <qpixmap.h>
23#include "graph.h"
24
25void GraphData::clear()
26{
27 names.clear();
28 values.resize(0);
29}
30
31void GraphData::addItem( const QString &name, int value )
32{
33 names.append( name );
34 values.resize( values.size() + 1 );
35 values[values.size()-1] = value;
36}
37
38Graph::Graph(QWidget *parent, const char *name, WFlags f )
39 : QFrame( parent, name, f )
40{
41}
42
43PieGraph::PieGraph(QWidget *parent, const char *name, WFlags f )
44 : Graph( parent, name, f )
45{
46}
47
48void PieGraph::drawContents( QPainter *p )
49{
50 int size = QMIN( contentsRect().width(), contentsRect().height() ) - 1;
51
52 int total = 0;
53 for ( unsigned i = 0; i < data->count(); i++ )
54 total += data->value(i);
55
56 int angle = 0;
57 for ( unsigned i = 0; i < data->count(); i++ ) {
58 int len;
59 if ( i == data->count() - 1 || !total )
60 len = 5760 - angle;
61 else
62 len = data->value(i) * 5760 / total;
63 QColor col;
64 col.setHsv( i * 360 / data->count(), 255, 255 );
65 p->setBrush( col );
66 p->drawPie ( contentsRect().x(), contentsRect().y(),
67 size, size, angle, len+32 );
68 angle += len;
69 }
70}
71
72BarGraph::BarGraph(QWidget *parent, const char *name, WFlags f )
73 : Graph( parent, name, f )
74{
75 setMinimumHeight( 10 );
76 setMaximumHeight( 45 );
77}
78
79void BarGraph::drawContents( QPainter *p )
80{
81 int h = contentsRect().height();
82 int y = contentsRect().top();
83
84 int total = 0;
85 for ( unsigned i = 0; i < data->count(); i++ )
86 total += data->value(i);
87
88 int pos = 0;
89 for ( unsigned i = 0; i < data->count(); i++ ) {
90 int len;
91 if ( i == data->count() - 1 || !total )
92 len = contentsRect().width() - pos;
93 else
94 len = data->value(i) * contentsRect().width() / total;
95 QColor col;
96 col.setHsv( i * 360 / data->count(), 255, 255 );
97 drawSegment( p, QRect(contentsRect().x() + pos, y, len, h), col );
98 pos += len;
99 }
100}
101
102void BarGraph::drawSegment( QPainter *p, const QRect &r, const QColor &c )
103{
104 if ( QPixmap::defaultDepth() > 8 ) {
105 QColor topgrad = c.light(170);
106 QColor botgrad = c.dark();
107
108 int h1, h2, s1, s2, v1, v2;
109 topgrad.hsv( &h1, &s1, &v1 );
110 botgrad.hsv( &h2, &s2, &v2 );
111 int ng = r.height();
112 for ( int j =0; j < ng; j++ ) {
113 p->setPen( QColor( h1 + ((h2-h1)*j)/(ng-1),
114 s1 + ((s2-s1)*j)/(ng-1),
115 v1 + ((v2-v1)*j)/(ng-1), QColor::Hsv ) );
116 p->drawLine( r.x(), r.top()+j, r.x()+r.width(), r.top()+j );
117 }
118 } else {
119 p->fillRect( r.x(), r.top(), r.width(), r.height(), c );
120 }
121}
122
123
124GraphLegend::GraphLegend( QWidget *parent, const char *name, WFlags f )
125 : QFrame( parent, name, f )
126{
127 horz = FALSE;
128}
129
130void GraphLegend::setOrientation(Orientation o)
131{
132 horz = o == Horizontal;
133}
134
135void GraphLegend::drawContents( QPainter *p )
136{
137 int total = 0;
138 for ( unsigned i = 0; i < data->count(); i++ )
139 total += data->value(i);
140
141 int tw = width()/data->count()-1;
142 int th = height()/(horz ? 1 : data->count());
143 if ( th > p->fontMetrics().height() )
144 th = p->fontMetrics().height();
145 int x = 0;
146 int y = 0;
147 for ( unsigned i = 0; i < data->count(); i++ ) {
148 QColor col;
149 col.setHsv( i * 360 / data->count(), 255, 255 );
150 p->setBrush( col );
151 p->drawRect( x+1, y+1, th - 2, th - 2 );
152 p->drawText( x+th + 1, y + p->fontMetrics().ascent()+1, data->name(i) );
153 if ( horz ) {
154 x += tw;
155 } else {
156 y += th;
157 }
158 }
159}
160
161QSize GraphLegend::sizeHint() const
162{
163 int th = fontMetrics().height() + 2;
164 int maxw = 0;
165 for ( unsigned i = 0; i < data->count(); i++ ) {
166 int w = fontMetrics().width( data->name(i) );
167 if ( w > maxw )
168 maxw = w;
169 }
170 if ( 0 && horz ) {
171 return QSize( maxw * data->count(), th );
172 } else {
173 return QSize( maxw, th * data->count() );
174 }
175}
176
177void GraphLegend::setData( const GraphData *p )
178{
179 data = p;
180 int th = fontMetrics().height();
181 setMinimumHeight( th * ( horz ? 1 : data->count() ) );
182 updateGeometry();
183}