| @@ -1,7 +1,7 | |||||
| 1 | #include "charttheme_p.h" |
|
1 | #include "charttheme_p.h" | |
| 2 | #include "qchart.h" |
|
2 | #include "qchart.h" | |
| 3 | #include "qchartaxis.h" |
|
3 | #include "qchartaxis.h" | |
| 4 |
|
4 | #include <QTime> | ||
| 5 |
|
5 | |||
| 6 | //series |
|
6 | //series | |
| 7 | #include "qbarset.h" |
|
7 | #include "qbarset.h" | |
| @@ -50,6 +50,8 ChartTheme::ChartTheme(QChart::ChartTheme id) | |||||
| 50 | m_seriesColor.append(QRgb(0xff707070)); |
|
50 | m_seriesColor.append(QRgb(0xff707070)); | |
| 51 | m_gradientStartColor = QColor(QRgb(0xffffffff)); |
|
51 | m_gradientStartColor = QColor(QRgb(0xffffffff)); | |
| 52 | m_gradientEndColor = QColor(QRgb(0xffafafaf)); |
|
52 | m_gradientEndColor = QColor(QRgb(0xffafafaf)); | |
|
|
53 | ||||
|
|
54 | qsrand(QTime(0,0,0).secsTo(QTime::currentTime())); | |||
| 53 | } |
|
55 | } | |
| 54 |
|
56 | |||
| 55 |
|
57 | |||
| @@ -188,31 +190,63 void ChartTheme::decorate(PiePresenter* item, QPieSeries* series, int /*count*/) | |||||
| 188 | QColor c = m_seriesColor[i++]; |
|
190 | QColor c = m_seriesColor[i++]; | |
| 189 | i = i % m_seriesColor.count(); |
|
191 | i = i % m_seriesColor.count(); | |
| 190 |
|
192 | |||
| 191 | // -1 means achromatic color -> cannot manipulate lightness |
|
193 | // by default use the "raw" theme color | |
| 192 | // TODO: find a better way to randomize lightness |
|
194 | if (!colors.contains(c)) { | |
| 193 | if (c.toHsv().hue() == -1) |
|
195 | colors << c; | |
| 194 | qWarning() << "ChartTheme::decorate() warning: achromatic theme color"; |
|
196 | continue; | |
|
|
197 | } | |||
|
|
198 | // ...ok we need to generate something that looks like the same color | |||
|
|
199 | // but different lightness | |||
|
|
200 | ||||
|
|
201 | int tryCount = 0; | |||
|
|
202 | while (tryCount++ < 100) { | |||
| 195 |
|
203 | |||
| 196 | // randomize lightness |
|
204 | // find maximum value we can raise the lightness | |
| 197 | qreal f = 50 + (qrand() % 100); // 50 is 50% darker, 100 is the same, 150 is 50% lighter |
|
205 | int lMax = 255; | |
| 198 | c = c.lighter(f); |
|
206 | if (lMax > 255 - c.red()) | |
|
|
207 | lMax = 255 - c.red(); | |||
|
|
208 | if (lMax > 255 - c.green()) | |||
|
|
209 | lMax = 255 - c.green(); | |||
|
|
210 | if (lMax > 255 - c.blue()) | |||
|
|
211 | lMax = 255 - c.blue(); | |||
| 199 |
|
212 | |||
| 200 | // find duplicates |
|
213 | // find maximum value we can make it darker | |
| 201 | bool isUnique = true; |
|
214 | int dMax = 255; | |
| 202 | foreach (QColor color, colors) { |
|
215 | if (dMax > c.red()) | |
| 203 |
|
|
216 | dMax = c.red(); | |
| 204 | isUnique = false; |
|
217 | if (dMax > c.green()) | |
|
|
218 | dMax = c.green(); | |||
|
|
219 | if (dMax > c.blue()) | |||
|
|
220 | dMax = c.blue(); | |||
|
|
221 | ||||
|
|
222 | int max = dMax + lMax; | |||
|
|
223 | if (max == 0) { | |||
|
|
224 | // no room to make color lighter or darker... | |||
|
|
225 | qDebug() << "cannot generate a color for pie!"; | |||
|
|
226 | break; | |||
|
|
227 | } | |||
|
|
228 | ||||
|
|
229 | // generate random color | |||
|
|
230 | int r = c.red() - dMax; | |||
|
|
231 | int g = c.green() - dMax; | |||
|
|
232 | int b = c.blue() - dMax; | |||
|
|
233 | int d = qrand() % max; | |||
|
|
234 | c.setRgb(r+d, g+d, b+d); | |||
|
|
235 | ||||
|
|
236 | // found a unique color? | |||
|
|
237 | if (!colors.contains(c)) | |||
|
|
238 | break; | |||
| 205 | } |
|
239 | } | |
| 206 |
|
240 | |||
| 207 | // add to array if unique |
|
241 | qDebug() << "generated a color for pie" << c; | |
| 208 | //if (isUnique) |
|
242 | colors << c; | |
| 209 | colors << c; |
|
|||
| 210 | } |
|
243 | } | |
| 211 |
|
244 | |||
| 212 | // finally update colors |
|
245 | // finally update colors | |
| 213 | foreach (QPieSlice* s, series->slices()) { |
|
246 | foreach (QPieSlice* s, series->slices()) { | |
| 214 | s->setPen(QPen(Qt::black)); // TODO: get from theme |
|
247 | QColor c = colors.takeFirst(); | |
| 215 | s->setBrush(colors.takeFirst()); |
|
248 | s->setPen(c); | |
|
|
249 | s->setBrush(c); | |||
| 216 | } |
|
250 | } | |
| 217 | } |
|
251 | } | |
| 218 |
|
252 | |||
General Comments 0
You need to be logged in to leave comments.
Login now