@@ -1,538 +1,537 | |||
|
1 | 1 | #include "qpieseries.h" |
|
2 | 2 | #include "qpieslice.h" |
|
3 | 3 | #include "piepresenter.h" |
|
4 | 4 | #include "pieslice.h" |
|
5 | 5 | #include <QFontMetrics> |
|
6 | 6 | #include <QDebug> |
|
7 | 7 | |
|
8 | 8 | QTCOMMERCIALCHART_BEGIN_NAMESPACE |
|
9 | 9 | |
|
10 | 10 | |
|
11 | 11 | /*! |
|
12 | 12 | \class QPieSeries::ChangeSet |
|
13 | 13 | \brief Defines the changes in the series. |
|
14 | 14 | |
|
15 | 15 | Contains the changes that have occurred in the series. Lists of added, changed and removed slices. |
|
16 | 16 | |
|
17 | 17 | \sa QPieSeries::changed() |
|
18 | 18 | */ |
|
19 | 19 | |
|
20 | 20 | /*! |
|
21 | 21 | \internal |
|
22 | 22 | */ |
|
23 | 23 | void QPieSeries::ChangeSet::appendAdded(QPieSlice* slice) |
|
24 | 24 | { |
|
25 | 25 | if (!m_added.contains(slice)) |
|
26 | 26 | m_added << slice; |
|
27 | 27 | } |
|
28 | 28 | |
|
29 | 29 | /*! |
|
30 | 30 | \internal |
|
31 | 31 | */ |
|
32 | 32 | void QPieSeries::ChangeSet::appendAdded(QList<QPieSlice*> slices) |
|
33 | 33 | { |
|
34 | 34 | foreach (QPieSlice* s, slices) |
|
35 | 35 | appendAdded(s); |
|
36 | 36 | } |
|
37 | 37 | |
|
38 | 38 | /*! |
|
39 | 39 | \internal |
|
40 | 40 | */ |
|
41 | 41 | void QPieSeries::ChangeSet::appendChanged(QPieSlice* slice) |
|
42 | 42 | { |
|
43 | 43 | if (!m_changed.contains(slice)) |
|
44 | 44 | m_changed << slice; |
|
45 | 45 | } |
|
46 | 46 | |
|
47 | 47 | /*! |
|
48 | 48 | \internal |
|
49 | 49 | */ |
|
50 | 50 | void QPieSeries::ChangeSet::appendRemoved(QPieSlice* slice) |
|
51 | 51 | { |
|
52 | 52 | if (!m_removed.contains(slice)) |
|
53 | 53 | m_removed << slice; |
|
54 | 54 | } |
|
55 | 55 | |
|
56 | 56 | /*! |
|
57 | 57 | Returns a list of slices that have been added to the series. |
|
58 | 58 | \sa QPieSeries::changed() |
|
59 | 59 | */ |
|
60 | 60 | QList<QPieSlice*> QPieSeries::ChangeSet::added() const |
|
61 | 61 | { |
|
62 | 62 | return m_added; |
|
63 | 63 | } |
|
64 | 64 | |
|
65 | 65 | /*! |
|
66 | 66 | Returns a list of slices that have been changed in the series. |
|
67 | 67 | \sa QPieSeries::changed() |
|
68 | 68 | */ |
|
69 | 69 | QList<QPieSlice*> QPieSeries::ChangeSet::changed() const |
|
70 | 70 | { |
|
71 | 71 | return m_changed; |
|
72 | 72 | } |
|
73 | 73 | |
|
74 | 74 | /*! |
|
75 | 75 | Returns a list of slices that have been removed from the series. |
|
76 | 76 | \sa QPieSeries::changed() |
|
77 | 77 | */ |
|
78 | 78 | QList<QPieSlice*> QPieSeries::ChangeSet::removed() const |
|
79 | 79 | { |
|
80 | 80 | return m_removed; |
|
81 | 81 | } |
|
82 | 82 | |
|
83 | 83 | |
|
84 | 84 | /*! |
|
85 | 85 | Returns true if there are no added/changed or removed slices in the change set. |
|
86 | 86 | */ |
|
87 | 87 | bool QPieSeries::ChangeSet::isEmpty() const |
|
88 | 88 | { |
|
89 | 89 | if (m_added.count() || m_changed.count() || m_removed.count()) |
|
90 | 90 | return false; |
|
91 | 91 | return true; |
|
92 | 92 | } |
|
93 | 93 | |
|
94 | 94 | /*! |
|
95 | 95 | \enum QPieSeries::PiePosition |
|
96 | 96 | |
|
97 | 97 | This enum describes pie position within its bounding rectangle |
|
98 | 98 | |
|
99 | 99 | \value PiePositionMaximized |
|
100 | 100 | \value PiePositionTopLeft |
|
101 | 101 | \value PiePositionTopRight |
|
102 | 102 | \value PiePositionBottomLeft |
|
103 | 103 | \value PiePositionBottomRight |
|
104 | 104 | */ |
|
105 | 105 | |
|
106 | 106 | /*! |
|
107 | 107 | \class QPieSeries |
|
108 | 108 | \brief Pie series API for QtCommercial Charts |
|
109 | 109 | |
|
110 | 110 | The pie series defines a pie chart which consists of pie slices which are QPieSlice objects. |
|
111 | 111 | The slices can have any values as the QPieSeries will calculate its relative value to the sum of all slices. |
|
112 | 112 | The actual slice size (span) is determined by that relative value. |
|
113 | 113 | |
|
114 | 114 | By default the pie is defined as full but it can be a partial pie. |
|
115 | 115 | This can be done by setting a starting angle and angle span to the series. |
|
116 | 116 | |
|
117 | 117 | Example on how to create a chart with pie series: |
|
118 | 118 | \snippet ../example/piechart/main.cpp 1 |
|
119 | 119 | |
|
120 | 120 | To help with the most common user intercation scenarions there some convenience functions. Specifically |
|
121 | 121 | exploding and higlighting: |
|
122 | 122 | \snippet ../example/piechart/main.cpp 2 |
|
123 | 123 | |
|
124 | 124 | */ |
|
125 | 125 | |
|
126 | 126 | /*! |
|
127 | 127 | Constructs a series object which is a child of \a parent. |
|
128 | 128 | */ |
|
129 | 129 | QPieSeries::QPieSeries(QObject *parent) : |
|
130 | 130 | QChartSeries(parent), |
|
131 | 131 | m_sizeFactor(1.0), |
|
132 | 132 | m_position(PiePositionMaximized), |
|
133 | 133 | m_pieStartAngle(0), |
|
134 | 134 | m_pieAngleSpan(360) |
|
135 | 135 | { |
|
136 | 136 | |
|
137 | 137 | } |
|
138 | 138 | |
|
139 | 139 | /*! |
|
140 | 140 | Destroys the object. Note that adding series to QChart transfers the ownership to the chart. |
|
141 | 141 | */ |
|
142 | 142 | QPieSeries::~QPieSeries() |
|
143 | 143 | { |
|
144 | 144 | |
|
145 | 145 | } |
|
146 | 146 | |
|
147 | 147 | /*! |
|
148 | 148 | Returns QChartSeries::SeriesTypePie. |
|
149 | 149 | */ |
|
150 | 150 | QChartSeries::QChartSeriesType QPieSeries::type() const |
|
151 | 151 | { |
|
152 | 152 | return QChartSeries::SeriesTypePie; |
|
153 | 153 | } |
|
154 | 154 | |
|
155 | 155 | /*! |
|
156 | Sets an array of values to the series. | |
|
157 | TO BE REMOVED | |
|
156 | \internal \a data | |
|
158 | 157 | */ |
|
159 | 158 | bool QPieSeries::setData(QList<qreal> data) |
|
160 | 159 | { |
|
161 | 160 | // TODO: remove this function |
|
162 | 161 | QList<QPieSlice*> slices; |
|
163 | 162 | foreach (qreal value, data) |
|
164 | 163 | slices << new QPieSlice(value, QString::number(value)); |
|
165 | 164 | set(slices); |
|
166 | 165 | return true; |
|
167 | 166 | } |
|
168 | 167 | |
|
169 | 168 | /*! |
|
170 | 169 | Sets an array of \a slices to the series. |
|
171 | 170 | Slice ownership is passed to the series. |
|
172 | 171 | */ |
|
173 | 172 | void QPieSeries::set(QList<QPieSlice*> slices) |
|
174 | 173 | { |
|
175 | 174 | clear(); |
|
176 | 175 | add(slices); |
|
177 | 176 | } |
|
178 | 177 | |
|
179 | 178 | /*! |
|
180 | 179 | Adds an array of \a slices to the series. |
|
181 | 180 | Slice ownership is passed to the series. |
|
182 | 181 | */ |
|
183 | 182 | void QPieSeries::add(QList<QPieSlice*> slices) |
|
184 | 183 | { |
|
185 | 184 | ChangeSet changeSet; |
|
186 | 185 | foreach (QPieSlice* s, slices) { |
|
187 | 186 | s->setParent(this); |
|
188 | 187 | m_slices << s; |
|
189 | 188 | changeSet.appendAdded(s); |
|
190 | 189 | } |
|
191 | 190 | |
|
192 | 191 | updateDerivativeData(); |
|
193 | 192 | |
|
194 | 193 | foreach (QPieSlice* s, slices) { |
|
195 | 194 | connect(s, SIGNAL(changed()), this, SLOT(sliceChanged())); |
|
196 | 195 | connect(s, SIGNAL(clicked()), this, SLOT(sliceClicked())); |
|
197 | 196 | connect(s, SIGNAL(hoverEnter()), this, SLOT(sliceHoverEnter())); |
|
198 | 197 | connect(s, SIGNAL(hoverLeave()), this, SLOT(sliceHoverLeave())); |
|
199 | 198 | } |
|
200 | 199 | |
|
201 | 200 | emit changed(changeSet); |
|
202 | 201 | } |
|
203 | 202 | |
|
204 | 203 | /*! |
|
205 | 204 | Adds a single \a slice to the series. |
|
206 | 205 | Slice ownership is passed to the series. |
|
207 | 206 | */ |
|
208 | 207 | void QPieSeries::add(QPieSlice* slice) |
|
209 | 208 | { |
|
210 | 209 | add(QList<QPieSlice*>() << slice); |
|
211 | 210 | } |
|
212 | 211 | |
|
213 | 212 | |
|
214 | 213 | /*! |
|
215 | 214 | Adds a single slice to the series with give \a value and \a name. |
|
216 | 215 | Slice ownership is passed to the series. |
|
217 | 216 | */ |
|
218 | 217 | QPieSlice* QPieSeries::add(qreal value, QString name) |
|
219 | 218 | { |
|
220 | 219 | QPieSlice* slice = new QPieSlice(value, name); |
|
221 | 220 | add(slice); |
|
222 | 221 | return slice; |
|
223 | 222 | } |
|
224 | 223 | |
|
225 | 224 | /*! |
|
226 | 225 | Removes a single \a slice from the series and deletes the slice. |
|
227 | 226 | |
|
228 | 227 | Do not reference this pointer after this call. |
|
229 | 228 | */ |
|
230 | 229 | void QPieSeries::remove(QPieSlice* slice) |
|
231 | 230 | { |
|
232 | 231 | if (!m_slices.removeOne(slice)) { |
|
233 | 232 | Q_ASSERT(0); // TODO: how should this be reported? |
|
234 | 233 | return; |
|
235 | 234 | } |
|
236 | 235 | |
|
237 | 236 | ChangeSet changeSet; |
|
238 | 237 | changeSet.appendRemoved(slice); |
|
239 | 238 | emit changed(changeSet); |
|
240 | 239 | |
|
241 | 240 | delete slice; |
|
242 | 241 | slice = NULL; |
|
243 | 242 | |
|
244 | 243 | updateDerivativeData(); |
|
245 | 244 | } |
|
246 | 245 | |
|
247 | 246 | /*! |
|
248 | 247 | Clears all slices from the series. |
|
249 | 248 | */ |
|
250 | 249 | void QPieSeries::clear() |
|
251 | 250 | { |
|
252 | 251 | if (m_slices.count() == 0) |
|
253 | 252 | return; |
|
254 | 253 | |
|
255 | 254 | ChangeSet changeSet; |
|
256 | 255 | foreach (QPieSlice* s, m_slices) { |
|
257 | 256 | changeSet.appendRemoved(s); |
|
258 | 257 | m_slices.removeOne(s); |
|
259 | 258 | delete s; |
|
260 | 259 | } |
|
261 | 260 | emit changed(changeSet); |
|
262 | 261 | updateDerivativeData(); |
|
263 | 262 | } |
|
264 | 263 | |
|
265 | 264 | /*! |
|
266 | 265 | Counts the number of the slices in this series. |
|
267 | 266 | */ |
|
268 | 267 | int QPieSeries::count() const |
|
269 | 268 | { |
|
270 | 269 | return m_slices.count(); |
|
271 | 270 | } |
|
272 | 271 | |
|
273 | 272 | /*! |
|
274 | 273 | Returns a list of slices that belong to this series. |
|
275 | 274 | */ |
|
276 | 275 | QList<QPieSlice*> QPieSeries::slices() const |
|
277 | 276 | { |
|
278 | 277 | return m_slices; |
|
279 | 278 | } |
|
280 | 279 | |
|
281 | 280 | /*! |
|
282 | 281 | Sets the size \a factor of the pie. 1.0 is the default value. |
|
283 | 282 | Note that the pie will not grow beyond its absolute maximum size. |
|
284 | 283 | In practice its use is to make the pie appear smaller. |
|
285 | 284 | \sa sizeFactor() |
|
286 | 285 | */ |
|
287 | 286 | void QPieSeries::setSizeFactor(qreal factor) |
|
288 | 287 | { |
|
289 | 288 | if (factor < 0.0) |
|
290 | 289 | return; |
|
291 | 290 | |
|
292 | 291 | if (m_sizeFactor != factor) { |
|
293 | 292 | m_sizeFactor = factor; |
|
294 | 293 | emit sizeFactorChanged(); |
|
295 | 294 | } |
|
296 | 295 | } |
|
297 | 296 | |
|
298 | 297 | /*! |
|
299 | 298 | Gets the size factor of the pie. |
|
300 | 299 | \sa setSizeFactor() |
|
301 | 300 | */ |
|
302 | 301 | qreal QPieSeries::sizeFactor() const |
|
303 | 302 | { |
|
304 | 303 | return m_sizeFactor; |
|
305 | 304 | } |
|
306 | 305 | |
|
307 | 306 | /*! |
|
308 | 307 | Sets the \a position of the pie within its bounding rectangle. |
|
309 | 308 | \sa PiePosition, position() |
|
310 | 309 | */ |
|
311 | 310 | void QPieSeries::setPosition(PiePosition position) |
|
312 | 311 | { |
|
313 | 312 | if (m_position != position) { |
|
314 | 313 | m_position = position; |
|
315 | 314 | emit positionChanged(); |
|
316 | 315 | } |
|
317 | 316 | } |
|
318 | 317 | |
|
319 | 318 | /*! |
|
320 | 319 | Gets the position of the pie within its bounding rectangle. |
|
321 | 320 | \sa PiePosition, setPosition() |
|
322 | 321 | */ |
|
323 | 322 | QPieSeries::PiePosition QPieSeries::position() const |
|
324 | 323 | { |
|
325 | 324 | return m_position; |
|
326 | 325 | } |
|
327 | 326 | |
|
328 | 327 | |
|
329 | 328 | /*! |
|
330 | 329 | Sets the \a startAngle and \a angleSpan of this series. |
|
331 | 330 | |
|
332 | 331 | Full pie is 360 degrees where 0 degrees is at 12 a'clock. |
|
333 | 332 | */ |
|
334 | 333 | void QPieSeries::setSpan(qreal startAngle, qreal angleSpan) |
|
335 | 334 | { |
|
336 | 335 | if (startAngle >= 0 && startAngle < 360 && |
|
337 | 336 | angleSpan > 0 && angleSpan <= 360) { |
|
338 | 337 | m_pieStartAngle = startAngle; |
|
339 | 338 | m_pieAngleSpan = angleSpan; |
|
340 | 339 | updateDerivativeData(); |
|
341 | 340 | } |
|
342 | 341 | } |
|
343 | 342 | |
|
344 | 343 | /*! |
|
345 | 344 | Sets the all the slice labels \a visible or invisible. |
|
346 | 345 | |
|
347 | 346 | \sa QPieSlice::isLabelVisible(), QPieSlice::setLabelVisible() |
|
348 | 347 | */ |
|
349 | 348 | void QPieSeries::setLabelsVisible(bool visible) |
|
350 | 349 | { |
|
351 | 350 | foreach (QPieSlice* s, m_slices) |
|
352 | 351 | s->setLabelVisible(visible); |
|
353 | 352 | } |
|
354 | 353 | |
|
355 | 354 | /*! |
|
356 | 355 | Convenience method for exploding a slice when user clicks the pie. Set \a enable to true to |
|
357 | 356 | explode slices by clicking. |
|
358 | 357 | |
|
359 | 358 | \sa QPieSlice::isExploded(), QPieSlice::setExploded(), QPieSlice::setExplodeDistance() |
|
360 | 359 | */ |
|
361 | 360 | void QPieSeries::enableClickExplodes(bool enable) |
|
362 | 361 | { |
|
363 | 362 | if (enable) |
|
364 | 363 | connect(this, SIGNAL(clicked(QPieSlice*)), this, SLOT(toggleExploded(QPieSlice*))); |
|
365 | 364 | else |
|
366 | 365 | disconnect(this, SLOT(toggleExploded(QPieSlice*))); |
|
367 | 366 | } |
|
368 | 367 | |
|
369 | 368 | /*! |
|
370 | 369 | Convenience method for highlighting a slice when user hovers over the slice. |
|
371 | 370 | It changes the slice color to be lighter and shows the label of the slice. |
|
372 | 371 | Set \a enable to true to highlight a slice when user hovers on top of it. |
|
373 | 372 | |
|
374 | 373 | \sa QPieSlice::isExploded(), QPieSlice::setExploded() |
|
375 | 374 | */ |
|
376 | 375 | |
|
377 | 376 | void QPieSeries::enableHoverHighlight(bool enable) |
|
378 | 377 | { |
|
379 | 378 | if (enable) { |
|
380 | 379 | connect(this, SIGNAL(hoverEnter(QPieSlice*)), this, SLOT(highlightOn(QPieSlice*))); |
|
381 | 380 | connect(this, SIGNAL(hoverLeave(QPieSlice*)), this, SLOT(highlightOff(QPieSlice*))); |
|
382 | 381 | } else { |
|
383 | 382 | disconnect(this, SLOT(hoverEnter(QPieSlice*))); |
|
384 | 383 | disconnect(this, SLOT(hoverLeave(QPieSlice*))); |
|
385 | 384 | } |
|
386 | 385 | } |
|
387 | 386 | |
|
388 | 387 | /*! |
|
389 | 388 | \fn void QPieSeries::changed(const QPieSeries::ChangeSet& changeSet) |
|
390 | 389 | |
|
391 | 390 | This signal emitted when something has changed in the series. |
|
392 | 391 | The \a changeSet contains the details of which slices have been added, changed or removed. |
|
393 | 392 | |
|
394 | 393 | \sa QPieSeries::ChangeSet, QPieSlice::changed() |
|
395 | 394 | */ |
|
396 | 395 | |
|
397 | 396 | /*! |
|
398 | 397 | \fn void QPieSeries::clicked(QPieSlice* slice) |
|
399 | 398 | |
|
400 | 399 | This signal is emitted when a \a slice has been clicked. |
|
401 | 400 | |
|
402 | 401 | \sa QPieSlice::clicked() |
|
403 | 402 | */ |
|
404 | 403 | |
|
405 | 404 | /*! |
|
406 | 405 | \fn void QPieSeries::hoverEnter(QPieSlice* slice) |
|
407 | 406 | |
|
408 | 407 | This signal is emitted when user has hovered over a \a slice. |
|
409 | 408 | |
|
410 | 409 | \sa QPieSlice::hoverEnter() |
|
411 | 410 | */ |
|
412 | 411 | |
|
413 | 412 | /*! |
|
414 | 413 | \fn void QPieSeries::hoverLeave(QPieSlice* slice) |
|
415 | 414 | |
|
416 | 415 | This signal is emitted when user has hovered away from a \a slice. |
|
417 | 416 | |
|
418 | 417 | \sa QPieSlice::hoverLeave() |
|
419 | 418 | */ |
|
420 | 419 | |
|
421 | 420 | /*! |
|
422 | 421 | \fn void QPieSeries::sizeFactorChanged() |
|
423 | 422 | |
|
424 | 423 | This signal is emitted when size factor has been changed. |
|
425 | 424 | |
|
426 | 425 | \sa sizeFactor(), setSizeFactor() |
|
427 | 426 | */ |
|
428 | 427 | |
|
429 | 428 | /*! |
|
430 | 429 | \fn void QPieSeries::positionChanged() |
|
431 | 430 | |
|
432 | 431 | This signal is emitted when position of the pie has been changed. |
|
433 | 432 | |
|
434 | 433 | \sa position(), setPosition() |
|
435 | 434 | */ |
|
436 | 435 | |
|
437 | 436 | void QPieSeries::sliceChanged() |
|
438 | 437 | { |
|
439 | 438 | QPieSlice* slice = qobject_cast<QPieSlice *>(sender()); |
|
440 | 439 | Q_ASSERT(m_slices.contains(slice)); |
|
441 | 440 | |
|
442 | 441 | ChangeSet changeSet; |
|
443 | 442 | changeSet.appendChanged(slice); |
|
444 | 443 | emit changed(changeSet); |
|
445 | 444 | |
|
446 | 445 | updateDerivativeData(); |
|
447 | 446 | } |
|
448 | 447 | |
|
449 | 448 | void QPieSeries::sliceClicked() |
|
450 | 449 | { |
|
451 | 450 | QPieSlice* slice = qobject_cast<QPieSlice *>(sender()); |
|
452 | 451 | Q_ASSERT(m_slices.contains(slice)); |
|
453 | 452 | emit clicked(slice); |
|
454 | 453 | } |
|
455 | 454 | |
|
456 | 455 | void QPieSeries::sliceHoverEnter() |
|
457 | 456 | { |
|
458 | 457 | QPieSlice* slice = qobject_cast<QPieSlice *>(sender()); |
|
459 | 458 | Q_ASSERT(m_slices.contains(slice)); |
|
460 | 459 | emit hoverEnter(slice); |
|
461 | 460 | } |
|
462 | 461 | |
|
463 | 462 | void QPieSeries::sliceHoverLeave() |
|
464 | 463 | { |
|
465 | 464 | QPieSlice* slice = qobject_cast<QPieSlice *>(sender()); |
|
466 | 465 | Q_ASSERT(m_slices.contains(slice)); |
|
467 | 466 | emit hoverLeave(slice); |
|
468 | 467 | } |
|
469 | 468 | |
|
470 | 469 | void QPieSeries::toggleExploded(QPieSlice* slice) |
|
471 | 470 | { |
|
472 | 471 | Q_ASSERT(slice); |
|
473 | 472 | slice->setExploded(!slice->isExploded()); |
|
474 | 473 | } |
|
475 | 474 | |
|
476 | 475 | void QPieSeries::highlightOn(QPieSlice* slice) |
|
477 | 476 | { |
|
478 | 477 | Q_ASSERT(slice); |
|
479 | 478 | QColor c = slice->brush().color().lighter(); |
|
480 | 479 | slice->setBrush(c); |
|
481 | 480 | slice->setLabelVisible(true); |
|
482 | 481 | } |
|
483 | 482 | |
|
484 | 483 | void QPieSeries::highlightOff(QPieSlice* slice) |
|
485 | 484 | { |
|
486 | 485 | Q_ASSERT(slice); |
|
487 | 486 | QColor c = slice->brush().color().darker(150); |
|
488 | 487 | slice->setBrush(c); |
|
489 | 488 | slice->setLabelVisible(false); |
|
490 | 489 | } |
|
491 | 490 | |
|
492 | 491 | void QPieSeries::updateDerivativeData() |
|
493 | 492 | { |
|
494 | 493 | m_total = 0; |
|
495 | 494 | |
|
496 | 495 | // nothing to do? |
|
497 | 496 | if (m_slices.count() == 0) |
|
498 | 497 | return; |
|
499 | 498 | |
|
500 | 499 | // calculate total |
|
501 | 500 | foreach (QPieSlice* s, m_slices) |
|
502 | 501 | m_total += s->value(); |
|
503 | 502 | |
|
504 | 503 | // we must have some values |
|
505 | 504 | Q_ASSERT(m_total > 0); // TODO: is this the correct way to handle this? |
|
506 | 505 | |
|
507 | 506 | // update slice attributes |
|
508 | 507 | qreal sliceAngle = m_pieStartAngle; |
|
509 | 508 | foreach (QPieSlice* s, m_slices) { |
|
510 | 509 | |
|
511 | 510 | bool changed = false; |
|
512 | 511 | |
|
513 | 512 | qreal percentage = s->value() / m_total; |
|
514 | 513 | if (s->m_percentage != percentage) { |
|
515 | 514 | s->m_percentage = percentage; |
|
516 | 515 | changed = true; |
|
517 | 516 | } |
|
518 | 517 | |
|
519 | 518 | qreal sliceSpan = m_pieAngleSpan * percentage; |
|
520 | 519 | if (s->m_angleSpan != sliceSpan) { |
|
521 | 520 | s->m_angleSpan = sliceSpan; |
|
522 | 521 | changed = true; |
|
523 | 522 | } |
|
524 | 523 | |
|
525 | 524 | if (s->m_angle != sliceAngle) { |
|
526 | 525 | s->m_angle = sliceAngle; |
|
527 | 526 | changed = true; |
|
528 | 527 | } |
|
529 | 528 | sliceAngle += sliceSpan; |
|
530 | 529 | |
|
531 | 530 | if (changed) |
|
532 | 531 | emit s->changed(); |
|
533 | 532 | } |
|
534 | 533 | } |
|
535 | 534 | |
|
536 | 535 | #include "moc_qpieseries.cpp" |
|
537 | 536 | |
|
538 | 537 | QTCOMMERCIALCHART_END_NAMESPACE |
General Comments 0
You need to be logged in to leave comments.
Login now