author | drw <drw> | 2002-11-02 21:45:56 (UTC) |
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committer | drw <drw> | 2002-11-02 21:45:56 (UTC) |
commit | 2dc81c48428222533e5479947d9ad318e464bafa (patch) (unidiff) | |
tree | 2e3570d18f3574c49ffc8aaf287bac4822ff3a11 /noncore/apps/checkbook/graph.cpp | |
parent | 5e1893923a9ddf1e2bd3e8f9c0dd264d86b8d98d (diff) | |
download | opie-2dc81c48428222533e5479947d9ad318e464bafa.zip opie-2dc81c48428222533e5479947d9ad318e464bafa.tar.gz opie-2dc81c48428222533e5479947d9ad318e464bafa.tar.bz2 |
Implementing charting...
Diffstat (limited to 'noncore/apps/checkbook/graph.cpp') (more/less context) (ignore whitespace changes)
-rw-r--r-- | noncore/apps/checkbook/graph.cpp | 85 |
1 files changed, 76 insertions, 9 deletions
diff --git a/noncore/apps/checkbook/graph.cpp b/noncore/apps/checkbook/graph.cpp index bae92da..a0d8b78 100644 --- a/noncore/apps/checkbook/graph.cpp +++ b/noncore/apps/checkbook/graph.cpp | |||
@@ -30,4 +30,6 @@ | |||
30 | #include "graphinfo.h" | 30 | #include "graphinfo.h" |
31 | 31 | ||
32 | #include <qcolor.h> | ||
33 | #include <qfontmetrics.h> | ||
32 | #include <qpainter.h> | 34 | #include <qpainter.h> |
33 | 35 | ||
@@ -35,6 +37,4 @@ Graph::Graph( QWidget *parent, GraphInfo *d, const QString &name, int flags ) | |||
35 | : QWidget( parent, name, flags ) | 37 | : QWidget( parent, name, flags ) |
36 | { | 38 | { |
37 | setBackgroundMode( QWidget::PaletteBase ); | ||
38 | |||
39 | data = d; | 39 | data = d; |
40 | 40 | ||
@@ -83,30 +83,97 @@ void Graph::initGraph() | |||
83 | case GraphInfo::BarChart : | 83 | case GraphInfo::BarChart : |
84 | { | 84 | { |
85 | drawBarChart(); | 85 | drawBarChart( width(), height(), data->maxValue() ); |
86 | } | 86 | } |
87 | break; | 87 | break; |
88 | case GraphInfo::LineChart : | 88 | case GraphInfo::LineChart : |
89 | { | 89 | { |
90 | drawLineChart(); | 90 | //drawLineChart( p, s, min, max ); |
91 | } | 91 | } |
92 | break; | 92 | break; |
93 | case GraphInfo::PieChart : | 93 | case GraphInfo::PieChart : |
94 | { | 94 | { |
95 | drawPieChart(); | 95 | drawPieChart( width(), height(), data->totalValue() ); |
96 | } | 96 | } |
97 | }; | 97 | }; |
98 | } | 98 | } |
99 | 99 | ||
100 | void Graph::drawBarChart() | 100 | void Graph::drawBarChart( int width, int height, float max ) |
101 | { | 101 | { |
102 | //Find max value in GraphInfo->dataPoints() - make function in GraphInfo!!! | 102 | QPainter p( &graph ); |
103 | |||
104 | // Try to set the font size smaller for text | ||
105 | QFont f = font(); | ||
106 | f.setPointSize( 8 ); | ||
107 | p.setFont( f ); | ||
108 | |||
109 | int x = 0; | ||
110 | int i = 0; | ||
111 | int n = data->numberDataPoints(); | ||
112 | QFontMetrics fm=fontMetrics(); | ||
113 | int fh = fm.height(); | ||
114 | int fw; | ||
115 | |||
116 | QColor c( 0, 0, 255); | ||
117 | p.setBrush( c ); | ||
118 | |||
119 | for (DataPointInfo *dp = data->firstDataPoint(); dp; dp = data->nextDataPoint() ) | ||
120 | { | ||
121 | int bw = ( width - width / 4 - x ) / ( n - i ); | ||
122 | int bh = int( ( height - height / 4 - 1 ) * dp->value() / max ); | ||
123 | p.drawRect( width / 8 + x, height - height / 8 - 1 - bh, bw, bh ); | ||
124 | fw = fm.width( dp->label() ); | ||
125 | p.drawText( width / 8 + x - fw / 2 + bw / 2, height - height / 8, fw, | ||
126 | fh + height / 8, AlignTop | AlignHCenter, dp->label() ); | ||
127 | // WordBreak | AlignTop | AlignHCenter, dp->label() ); | ||
128 | i++; | ||
129 | x += bw; | ||
130 | } | ||
103 | } | 131 | } |
104 | 132 | ||
105 | void Graph::drawLineChart() | 133 | void Graph::drawLineChart( int width, int height, float max ) |
106 | { | 134 | { |
107 | } | 135 | } |
108 | 136 | ||
109 | void Graph::drawPieChart() | 137 | void Graph::drawPieChart( int width, int height, float sum ) |
110 | { | 138 | { |
139 | QPainter p( &graph ); | ||
140 | |||
141 | // Try to set the font size smaller for text | ||
142 | QFont f = font(); | ||
143 | f.setPointSize( 8 ); | ||
144 | p.setFont( f ); | ||
145 | |||
146 | int n = data->numberDataPoints(); | ||
147 | |||
148 | int apos = -90 * 16; | ||
149 | |||
150 | int xd = width - width / 5; | ||
151 | int yd = height - height / 5; | ||
152 | |||
153 | int i = 0; | ||
154 | |||
155 | QColor c; | ||
156 | |||
157 | for (DataPointInfo *dp = data->firstDataPoint(); dp; dp = data->nextDataPoint() ) | ||
158 | { | ||
159 | c.setHsv( ( i *255) / n, 255, 255 ); | ||
160 | p.setBrush( c ); | ||
161 | |||
162 | int a = int( ( dp->value() * 360.0 ) / sum * 16.0 + 0.5 ); | ||
163 | p.drawPie( width/10, height/10, xd, yd, -apos, -a ); | ||
164 | apos += a; | ||
165 | i++; | ||
166 | } | ||
167 | |||
168 | double apos2 = -90 * 3.14159 / 180; | ||
169 | for (DataPointInfo *dp = data->firstDataPoint(); dp; dp = data->nextDataPoint() ) | ||
170 | { | ||
171 | double a = dp->value() *360 / sum * 3.14159 / 180; | ||
172 | int x = int( cos( apos2 + a/2 ) * width * 5/16 + width/2 + 0.5 ); | ||
173 | int y = int( sin( apos2 + a/2 ) * height * 5/16 + height/2 + 0.5 ); | ||
174 | p.drawText( x - width/8, y - height/8, width/4, height/4, WordBreak | AlignCenter, | ||
175 | dp->label() ); | ||
176 | apos2 += a; | ||
177 | } | ||
111 | } | 178 | } |
112 | 179 | ||