Diffstat (limited to 'noncore/settings/sysinfo/graph.cpp') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | noncore/settings/sysinfo/graph.cpp | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/noncore/settings/sysinfo/graph.cpp b/noncore/settings/sysinfo/graph.cpp new file mode 100644 index 0000000..0b02bf7 --- a/dev/null +++ b/noncore/settings/sysinfo/graph.cpp @@ -0,0 +1,183 @@ +/********************************************************************** +** Copyright (C) 2000 Trolltech AS. All rights reserved. +** +** This file is part of Qtopia Environment. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ + +#include <qpainter.h> +#include <qpixmap.h> +#include "graph.h" + +void GraphData::clear() +{ + names.clear(); + values.resize(0); +} + +void GraphData::addItem( const QString &name, int value ) +{ + names.append( name ); + values.resize( values.size() + 1 ); + values[values.size()-1] = value; +} + +Graph::Graph(QWidget *parent, const char *name, WFlags f ) + : QFrame( parent, name, f ) +{ +} + +PieGraph::PieGraph(QWidget *parent, const char *name, WFlags f ) + : Graph( parent, name, f ) +{ +} + +void PieGraph::drawContents( QPainter *p ) +{ + int size = QMIN( contentsRect().width(), contentsRect().height() ) - 1; + + int total = 0; + for ( unsigned i = 0; i < data->count(); i++ ) + total += data->value(i); + + int angle = 0; + for ( unsigned i = 0; i < data->count(); i++ ) { + int len; + if ( i == data->count() - 1 || !total ) + len = 5760 - angle; + else + len = data->value(i) * 5760 / total; + QColor col; + col.setHsv( i * 360 / data->count(), 255, 255 ); + p->setBrush( col ); + p->drawPie ( contentsRect().x(), contentsRect().y(), + size, size, angle, len+32 ); + angle += len; + } +} + +BarGraph::BarGraph(QWidget *parent, const char *name, WFlags f ) + : Graph( parent, name, f ) +{ + setMinimumHeight( 10 ); + setMaximumHeight( 45 ); +} + +void BarGraph::drawContents( QPainter *p ) +{ + int h = contentsRect().height(); + int y = contentsRect().top(); + + int total = 0; + for ( unsigned i = 0; i < data->count(); i++ ) + total += data->value(i); + + int pos = 0; + for ( unsigned i = 0; i < data->count(); i++ ) { + int len; + if ( i == data->count() - 1 || !total ) + len = contentsRect().width() - pos; + else + len = data->value(i) * contentsRect().width() / total; + QColor col; + col.setHsv( i * 360 / data->count(), 255, 255 ); + drawSegment( p, QRect(contentsRect().x() + pos, y, len, h), col ); + pos += len; + } +} + +void BarGraph::drawSegment( QPainter *p, const QRect &r, const QColor &c ) +{ + if ( QPixmap::defaultDepth() > 8 ) { + QColor topgrad = c.light(170); + QColor botgrad = c.dark(); + + int h1, h2, s1, s2, v1, v2; + topgrad.hsv( &h1, &s1, &v1 ); + botgrad.hsv( &h2, &s2, &v2 ); + int ng = r.height(); + for ( int j =0; j < ng; j++ ) { + p->setPen( QColor( h1 + ((h2-h1)*j)/(ng-1), + s1 + ((s2-s1)*j)/(ng-1), + v1 + ((v2-v1)*j)/(ng-1), QColor::Hsv ) ); + p->drawLine( r.x(), r.top()+j, r.x()+r.width(), r.top()+j ); + } + } else { + p->fillRect( r.x(), r.top(), r.width(), r.height(), c ); + } +} + + +GraphLegend::GraphLegend( QWidget *parent, const char *name, WFlags f ) + : QFrame( parent, name, f ) +{ + horz = FALSE; +} + +void GraphLegend::setOrientation(Orientation o) +{ + horz = o == Horizontal; +} + +void GraphLegend::drawContents( QPainter *p ) +{ + int total = 0; + for ( unsigned i = 0; i < data->count(); i++ ) + total += data->value(i); + + int tw = width()/data->count()-1; + int th = height()/(horz ? 1 : data->count()); + if ( th > p->fontMetrics().height() ) + th = p->fontMetrics().height(); + int x = 0; + int y = 0; + for ( unsigned i = 0; i < data->count(); i++ ) { + QColor col; + col.setHsv( i * 360 / data->count(), 255, 255 ); + p->setBrush( col ); + p->drawRect( x+1, y+1, th - 2, th - 2 ); + p->drawText( x+th + 1, y + p->fontMetrics().ascent()+1, data->name(i) ); + if ( horz ) { + x += tw; + } else { + y += th; + } + } +} + +QSize GraphLegend::sizeHint() const +{ + int th = fontMetrics().height() + 2; + int maxw = 0; + for ( unsigned i = 0; i < data->count(); i++ ) { + int w = fontMetrics().width( data->name(i) ); + if ( w > maxw ) + maxw = w; + } + if ( 0 && horz ) { + return QSize( maxw * data->count(), th ); + } else { + return QSize( maxw, th * data->count() ); + } +} + +void GraphLegend::setData( const GraphData *p ) +{ + data = p; + int th = fontMetrics().height(); + setMinimumHeight( th * ( horz ? 1 : data->count() ) ); + updateGeometry(); +} |