| -rw-r--r-- | noncore/apps/checkbook/graph.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/noncore/apps/checkbook/graph.cpp b/noncore/apps/checkbook/graph.cpp index a0d8b78..0f25453 100644 --- a/noncore/apps/checkbook/graph.cpp +++ b/noncore/apps/checkbook/graph.cpp @@ -1,179 +1,181 @@ /* This file is part of the OPIE Project =. .=l. Copyright (c) 2002 Dan Williams <williamsdr@acm.org> .>+-= _;:, .> :=|. This file is free software; you can .> <`_, > . <= redistribute it and/or modify it under :`=1 )Y*s>-.-- : the terms of the GNU General Public .="- .-=="i, .._ License as published by the Free Software - . .-<_> .<> Foundation; either version 2 of the License, ._= =} : or (at your option) any later version. .%`+i> _;_. .i_,=:_. -<s. This file 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 file; -_. . . )=. = see the file COPYING. If not, write to the -- :-=` Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "graph.h" #include "graphinfo.h" #include <qcolor.h> #include <qfontmetrics.h> #include <qpainter.h> +#include <math.h> + Graph::Graph( QWidget *parent, GraphInfo *d, const QString &name, int flags ) : QWidget( parent, name, flags ) { data = d; graph.setOptimization( QPixmap::BestOptim ); } void Graph::setGraphInfo( GraphInfo *d ) { data = d; } void Graph::drawGraph( bool regen ) { if ( regen ) { initGraph(); } QPainter p( this ); p.drawPixmap( 0, 0, graph ); } void Graph::paintEvent( QPaintEvent * ) { drawGraph( FALSE ); } void Graph::resizeEvent( QResizeEvent * ) { drawGraph( TRUE ); } void Graph::initGraph() { graph.resize( width(), height() ); graph.fill( QColor( 255, 255, 255 ) ); if ( !data ) { return; } // Any common stuff here (titles, ???) switch ( data->graphType() ) { case GraphInfo::BarChart : { drawBarChart( width(), height(), data->maxValue() ); } break; case GraphInfo::LineChart : { //drawLineChart( p, s, min, max ); } break; case GraphInfo::PieChart : { drawPieChart( width(), height(), data->totalValue() ); } }; } void Graph::drawBarChart( int width, int height, float max ) { QPainter p( &graph ); // Try to set the font size smaller for text QFont f = font(); f.setPointSize( 8 ); p.setFont( f ); int x = 0; int i = 0; int n = data->numberDataPoints(); QFontMetrics fm=fontMetrics(); int fh = fm.height(); int fw; QColor c( 0, 0, 255); p.setBrush( c ); for (DataPointInfo *dp = data->firstDataPoint(); dp; dp = data->nextDataPoint() ) { int bw = ( width - width / 4 - x ) / ( n - i ); int bh = int( ( height - height / 4 - 1 ) * dp->value() / max ); p.drawRect( width / 8 + x, height - height / 8 - 1 - bh, bw, bh ); fw = fm.width( dp->label() ); p.drawText( width / 8 + x - fw / 2 + bw / 2, height - height / 8, fw, fh + height / 8, AlignTop | AlignHCenter, dp->label() ); // WordBreak | AlignTop | AlignHCenter, dp->label() ); i++; x += bw; } } void Graph::drawLineChart( int width, int height, float max ) { } void Graph::drawPieChart( int width, int height, float sum ) { QPainter p( &graph ); // Try to set the font size smaller for text QFont f = font(); f.setPointSize( 8 ); p.setFont( f ); int n = data->numberDataPoints(); int apos = -90 * 16; int xd = width - width / 5; int yd = height - height / 5; int i = 0; QColor c; for (DataPointInfo *dp = data->firstDataPoint(); dp; dp = data->nextDataPoint() ) { c.setHsv( ( i *255) / n, 255, 255 ); p.setBrush( c ); int a = int( ( dp->value() * 360.0 ) / sum * 16.0 + 0.5 ); p.drawPie( width/10, height/10, xd, yd, -apos, -a ); apos += a; i++; } double apos2 = -90 * 3.14159 / 180; for (DataPointInfo *dp = data->firstDataPoint(); dp; dp = data->nextDataPoint() ) { double a = dp->value() *360 / sum * 3.14159 / 180; int x = int( cos( apos2 + a/2 ) * width * 5/16 + width/2 + 0.5 ); int y = int( sin( apos2 + a/2 ) * height * 5/16 + height/2 + 0.5 ); p.drawText( x - width/8, y - height/8, width/4, height/4, WordBreak | AlignCenter, dp->label() ); apos2 += a; } } |