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QPieSeries: label value is now also updated when the same row/column of the model is mapped for values and labels
Marek Rosa -
r638:61d3ed85e2c1
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1 #include "qpieseries.h"
1 #include "qpieseries.h"
2 #include "qpieslice.h"
2 #include "qpieslice.h"
3 #include <QDebug>
3 #include <QDebug>
4
4
5 QTCOMMERCIALCHART_BEGIN_NAMESPACE
5 QTCOMMERCIALCHART_BEGIN_NAMESPACE
6
6
7 /*!
7 /*!
8 \class QPieSeries
8 \class QPieSeries
9 \brief Pie series API for QtCommercial Charts
9 \brief Pie series API for QtCommercial Charts
10
10
11 The pie series defines a pie chart which consists of pie slices which are QPieSlice objects.
11 The pie series defines a pie chart which consists of pie slices which are QPieSlice objects.
12 The slices can have any values as the QPieSeries will calculate its relative value to the sum of all slices.
12 The slices can have any values as the QPieSeries will calculate its relative value to the sum of all slices.
13 The actual slice size is determined by that relative value.
13 The actual slice size is determined by that relative value.
14
14
15 By default the pie is defined as a full pie but it can be a partial pie.
15 By default the pie is defined as a full pie but it can be a partial pie.
16 This can be done by setting a starting angle and angle span to the series.
16 This can be done by setting a starting angle and angle span to the series.
17 */
17 */
18
18
19 /*!
19 /*!
20 Constructs a series object which is a child of \a parent.
20 Constructs a series object which is a child of \a parent.
21 */
21 */
22 QPieSeries::QPieSeries(QObject *parent) :
22 QPieSeries::QPieSeries(QObject *parent) :
23 QSeries(parent),
23 QSeries(parent),
24 m_pieRelativeHorPos(0.5),
24 m_pieRelativeHorPos(0.5),
25 m_pieRelativeVerPos(0.5),
25 m_pieRelativeVerPos(0.5),
26 m_pieRelativeSize(0.7),
26 m_pieRelativeSize(0.7),
27 m_pieStartAngle(0),
27 m_pieStartAngle(0),
28 m_pieEndAngle(360),
28 m_pieEndAngle(360),
29 m_total(0)
29 m_total(0)
30 {
30 {
31
31
32 }
32 }
33
33
34 /*!
34 /*!
35 Destroys the object. Note that adding series to QChart transfers the ownership to the chart.
35 Destroys the object. Note that adding series to QChart transfers the ownership to the chart.
36 */
36 */
37 QPieSeries::~QPieSeries()
37 QPieSeries::~QPieSeries()
38 {
38 {
39
39
40 }
40 }
41
41
42 /*!
42 /*!
43 Returns QChartSeries::SeriesTypePie.
43 Returns QChartSeries::SeriesTypePie.
44 */
44 */
45 QSeries::QSeriesType QPieSeries::type() const
45 QSeries::QSeriesType QPieSeries::type() const
46 {
46 {
47 return QSeries::SeriesTypePie;
47 return QSeries::SeriesTypePie;
48 }
48 }
49
49
50 /*!
50 /*!
51 Sets an array of \a slices to the series replacing the existing slices.
51 Sets an array of \a slices to the series replacing the existing slices.
52 Slice ownership is passed to the series.
52 Slice ownership is passed to the series.
53 */
53 */
54 void QPieSeries::replace(QList<QPieSlice*> slices)
54 void QPieSeries::replace(QList<QPieSlice*> slices)
55 {
55 {
56 clear();
56 clear();
57 add(slices);
57 add(slices);
58 }
58 }
59
59
60 /*!
60 /*!
61 Adds an array of \a slices to the series.
61 Adds an array of \a slices to the series.
62 Slice ownership is passed to the series.
62 Slice ownership is passed to the series.
63 */
63 */
64 void QPieSeries::add(QList<QPieSlice*> slices)
64 void QPieSeries::add(QList<QPieSlice*> slices)
65 {
65 {
66 foreach (QPieSlice* s, slices) {
66 foreach (QPieSlice* s, slices) {
67 s->setParent(this);
67 s->setParent(this);
68 m_slices << s;
68 m_slices << s;
69 }
69 }
70
70
71 updateDerivativeData();
71 updateDerivativeData();
72
72
73 foreach (QPieSlice* s, slices) {
73 foreach (QPieSlice* s, slices) {
74 connect(s, SIGNAL(changed()), this, SLOT(sliceChanged()));
74 connect(s, SIGNAL(changed()), this, SLOT(sliceChanged()));
75 connect(s, SIGNAL(clicked()), this, SLOT(sliceClicked()));
75 connect(s, SIGNAL(clicked()), this, SLOT(sliceClicked()));
76 connect(s, SIGNAL(hoverEnter()), this, SLOT(sliceHoverEnter()));
76 connect(s, SIGNAL(hoverEnter()), this, SLOT(sliceHoverEnter()));
77 connect(s, SIGNAL(hoverLeave()), this, SLOT(sliceHoverLeave()));
77 connect(s, SIGNAL(hoverLeave()), this, SLOT(sliceHoverLeave()));
78 }
78 }
79
79
80 emit added(slices);
80 emit added(slices);
81 }
81 }
82
82
83 /*!
83 /*!
84 Adds a single \a slice to the series.
84 Adds a single \a slice to the series.
85 Slice ownership is passed to the series.
85 Slice ownership is passed to the series.
86 */
86 */
87 void QPieSeries::add(QPieSlice* slice)
87 void QPieSeries::add(QPieSlice* slice)
88 {
88 {
89 add(QList<QPieSlice*>() << slice);
89 add(QList<QPieSlice*>() << slice);
90 }
90 }
91
91
92 /*!
92 /*!
93 Adds a single \a slice to the series and returns a reference to the series.
93 Adds a single \a slice to the series and returns a reference to the series.
94 Slice ownership is passed to the series.
94 Slice ownership is passed to the series.
95 */
95 */
96 QPieSeries& QPieSeries::operator << (QPieSlice* slice)
96 QPieSeries& QPieSeries::operator << (QPieSlice* slice)
97 {
97 {
98 add(slice);
98 add(slice);
99 return *this;
99 return *this;
100 }
100 }
101
101
102
102
103 /*!
103 /*!
104 Adds a single slice to the series with give \a value and \a name.
104 Adds a single slice to the series with give \a value and \a name.
105 Slice ownership is passed to the series.
105 Slice ownership is passed to the series.
106 */
106 */
107 QPieSlice* QPieSeries::add(qreal value, QString name)
107 QPieSlice* QPieSeries::add(qreal value, QString name)
108 {
108 {
109 QPieSlice* slice = new QPieSlice(value, name);
109 QPieSlice* slice = new QPieSlice(value, name);
110 add(slice);
110 add(slice);
111 return slice;
111 return slice;
112 }
112 }
113
113
114 void QPieSeries::insert(int i, QPieSlice* slice)
114 void QPieSeries::insert(int i, QPieSlice* slice)
115 {
115 {
116 Q_ASSERT(i <= m_slices.count());
116 Q_ASSERT(i <= m_slices.count());
117 slice->setParent(this);
117 slice->setParent(this);
118 m_slices.insert(i, slice);
118 m_slices.insert(i, slice);
119
119
120 updateDerivativeData();
120 updateDerivativeData();
121
121
122 connect(slice, SIGNAL(changed()), this, SLOT(sliceChanged()));
122 connect(slice, SIGNAL(changed()), this, SLOT(sliceChanged()));
123 connect(slice, SIGNAL(clicked()), this, SLOT(sliceClicked()));
123 connect(slice, SIGNAL(clicked()), this, SLOT(sliceClicked()));
124 connect(slice, SIGNAL(hoverEnter()), this, SLOT(sliceHoverEnter()));
124 connect(slice, SIGNAL(hoverEnter()), this, SLOT(sliceHoverEnter()));
125 connect(slice, SIGNAL(hoverLeave()), this, SLOT(sliceHoverLeave()));
125 connect(slice, SIGNAL(hoverLeave()), this, SLOT(sliceHoverLeave()));
126
126
127 emit added(QList<QPieSlice*>() << slice);
127 emit added(QList<QPieSlice*>() << slice);
128 }
128 }
129
129
130 /*!
130 /*!
131 Removes a single \a slice from the series and deletes the slice.
131 Removes a single \a slice from the series and deletes the slice.
132
132
133 Do not reference this pointer after this call.
133 Do not reference this pointer after this call.
134 */
134 */
135 void QPieSeries::remove(QPieSlice* slice)
135 void QPieSeries::remove(QPieSlice* slice)
136 {
136 {
137 if (!m_slices.removeOne(slice)) {
137 if (!m_slices.removeOne(slice)) {
138 Q_ASSERT(0); // TODO: how should this be reported?
138 Q_ASSERT(0); // TODO: how should this be reported?
139 return;
139 return;
140 }
140 }
141
141
142 updateDerivativeData();
142 updateDerivativeData();
143
143
144 emit removed(QList<QPieSlice*>() << slice);
144 emit removed(QList<QPieSlice*>() << slice);
145
145
146 delete slice;
146 delete slice;
147 slice = NULL;
147 slice = NULL;
148 }
148 }
149
149
150 /*!
150 /*!
151 Clears all slices from the series.
151 Clears all slices from the series.
152 */
152 */
153 void QPieSeries::clear()
153 void QPieSeries::clear()
154 {
154 {
155 if (m_slices.count() == 0)
155 if (m_slices.count() == 0)
156 return;
156 return;
157
157
158 QList<QPieSlice*> slices = m_slices;
158 QList<QPieSlice*> slices = m_slices;
159 foreach (QPieSlice* s, m_slices) {
159 foreach (QPieSlice* s, m_slices) {
160 m_slices.removeOne(s);
160 m_slices.removeOne(s);
161 delete s;
161 delete s;
162 }
162 }
163
163
164 updateDerivativeData();
164 updateDerivativeData();
165
165
166 emit removed(slices);
166 emit removed(slices);
167 }
167 }
168
168
169 /*!
169 /*!
170 Counts the number of the slices in this series.
170 Counts the number of the slices in this series.
171 */
171 */
172 int QPieSeries::count() const
172 int QPieSeries::count() const
173 {
173 {
174 return m_slices.count();
174 return m_slices.count();
175 }
175 }
176
176
177 /*!
177 /*!
178 Returns true is the series is empty.
178 Returns true is the series is empty.
179 */
179 */
180 bool QPieSeries::isEmpty() const
180 bool QPieSeries::isEmpty() const
181 {
181 {
182 return m_slices.isEmpty();
182 return m_slices.isEmpty();
183 }
183 }
184
184
185 /*!
185 /*!
186 Returns a list of slices that belong to this series.
186 Returns a list of slices that belong to this series.
187 */
187 */
188 QList<QPieSlice*> QPieSeries::slices() const
188 QList<QPieSlice*> QPieSeries::slices() const
189 {
189 {
190 return m_slices;
190 return m_slices;
191 }
191 }
192
192
193 /*!
193 /*!
194 Sets the center position of the pie by \a relativeHorizontalPosition and \a relativeVerticalPosition.
194 Sets the center position of the pie by \a relativeHorizontalPosition and \a relativeVerticalPosition.
195
195
196 The factors are relative to the chart rectangle where:
196 The factors are relative to the chart rectangle where:
197
197
198 \a relativeHorizontalPosition 0.0 means the absolute left.
198 \a relativeHorizontalPosition 0.0 means the absolute left.
199 \a relativeHorizontalPosition 1.0 means the absolute right.
199 \a relativeHorizontalPosition 1.0 means the absolute right.
200 \a relativeVerticalPosition 0.0 means the absolute top.
200 \a relativeVerticalPosition 0.0 means the absolute top.
201 \a relativeVerticalPosition 1.0 means the absolute bottom.
201 \a relativeVerticalPosition 1.0 means the absolute bottom.
202
202
203 By default both values are 0.5 which puts the pie in the middle of the chart rectangle.
203 By default both values are 0.5 which puts the pie in the middle of the chart rectangle.
204
204
205 \sa pieHorizontalPosition(), pieVerticalPosition(), setPieSize()
205 \sa pieHorizontalPosition(), pieVerticalPosition(), setPieSize()
206 */
206 */
207 void QPieSeries::setPiePosition(qreal relativeHorizontalPosition, qreal relativeVerticalPosition)
207 void QPieSeries::setPiePosition(qreal relativeHorizontalPosition, qreal relativeVerticalPosition)
208 {
208 {
209 if (relativeHorizontalPosition < 0.0 || relativeHorizontalPosition > 1.0 ||
209 if (relativeHorizontalPosition < 0.0 || relativeHorizontalPosition > 1.0 ||
210 relativeVerticalPosition < 0.0 || relativeVerticalPosition > 1.0)
210 relativeVerticalPosition < 0.0 || relativeVerticalPosition > 1.0)
211 return;
211 return;
212
212
213 if (m_pieRelativeHorPos != relativeHorizontalPosition || m_pieRelativeVerPos != relativeVerticalPosition) {
213 if (m_pieRelativeHorPos != relativeHorizontalPosition || m_pieRelativeVerPos != relativeVerticalPosition) {
214 m_pieRelativeHorPos = relativeHorizontalPosition;
214 m_pieRelativeHorPos = relativeHorizontalPosition;
215 m_pieRelativeVerPos = relativeVerticalPosition;
215 m_pieRelativeVerPos = relativeVerticalPosition;
216 emit piePositionChanged();
216 emit piePositionChanged();
217 }
217 }
218 }
218 }
219
219
220 /*!
220 /*!
221 Gets the horizontal position of the pie.
221 Gets the horizontal position of the pie.
222
222
223 The returned value is relative to the chart rectangle where:
223 The returned value is relative to the chart rectangle where:
224
224
225 0.0 means the absolute left.
225 0.0 means the absolute left.
226 1.0 means the absolute right.
226 1.0 means the absolute right.
227
227
228 By default it is 0.5 which puts the pie in the horizontal middle of the chart rectangle.
228 By default it is 0.5 which puts the pie in the horizontal middle of the chart rectangle.
229
229
230 \sa setPiePosition(), pieVerticalPosition(), setPieSize()
230 \sa setPiePosition(), pieVerticalPosition(), setPieSize()
231 */
231 */
232 qreal QPieSeries::pieHorizontalPosition() const
232 qreal QPieSeries::pieHorizontalPosition() const
233 {
233 {
234 return m_pieRelativeHorPos;
234 return m_pieRelativeHorPos;
235 }
235 }
236
236
237 /*!
237 /*!
238 Gets the vertical position position of the pie.
238 Gets the vertical position position of the pie.
239
239
240 The returned value is relative to the chart rectangle where:
240 The returned value is relative to the chart rectangle where:
241
241
242 0.0 means the absolute top.
242 0.0 means the absolute top.
243 1.0 means the absolute bottom.
243 1.0 means the absolute bottom.
244
244
245 By default it is 0.5 which puts the pie in the vertical middle of the chart rectangle.
245 By default it is 0.5 which puts the pie in the vertical middle of the chart rectangle.
246
246
247 \sa setPiePosition(), pieHorizontalPosition(), setPieSize()
247 \sa setPiePosition(), pieHorizontalPosition(), setPieSize()
248 */
248 */
249 qreal QPieSeries::pieVerticalPosition() const
249 qreal QPieSeries::pieVerticalPosition() const
250 {
250 {
251 return m_pieRelativeVerPos;
251 return m_pieRelativeVerPos;
252 }
252 }
253
253
254 /*!
254 /*!
255 Sets the relative size of the pie.
255 Sets the relative size of the pie.
256
256
257 The \a relativeSize is defined so that the 1.0 is the maximum that can fit the given chart rectangle.
257 The \a relativeSize is defined so that the 1.0 is the maximum that can fit the given chart rectangle.
258
258
259 Default value is 0.7.
259 Default value is 0.7.
260
260
261 \sa pieSize(), setPiePosition(), pieVerticalPosition(), pieHorizontalPosition()
261 \sa pieSize(), setPiePosition(), pieVerticalPosition(), pieHorizontalPosition()
262 */
262 */
263 void QPieSeries::setPieSize(qreal relativeSize)
263 void QPieSeries::setPieSize(qreal relativeSize)
264 {
264 {
265 if (relativeSize < 0.0 || relativeSize > 1.0)
265 if (relativeSize < 0.0 || relativeSize > 1.0)
266 return;
266 return;
267
267
268 if (m_pieRelativeSize != relativeSize) {
268 if (m_pieRelativeSize != relativeSize) {
269 m_pieRelativeSize = relativeSize;
269 m_pieRelativeSize = relativeSize;
270 emit pieSizeChanged();
270 emit pieSizeChanged();
271 }
271 }
272 }
272 }
273
273
274 /*!
274 /*!
275 Gets the relative size of the pie.
275 Gets the relative size of the pie.
276
276
277 The size is defined so that the 1.0 is the maximum that can fit the given chart rectangle.
277 The size is defined so that the 1.0 is the maximum that can fit the given chart rectangle.
278
278
279 Default value is 0.7.
279 Default value is 0.7.
280
280
281 \sa setPieSize(), setPiePosition(), pieVerticalPosition(), pieHorizontalPosition()
281 \sa setPieSize(), setPiePosition(), pieVerticalPosition(), pieHorizontalPosition()
282 */
282 */
283 qreal QPieSeries::pieSize() const
283 qreal QPieSeries::pieSize() const
284 {
284 {
285 return m_pieRelativeSize;
285 return m_pieRelativeSize;
286 }
286 }
287
287
288
288
289 /*!
289 /*!
290 Sets the end angle of the pie.
290 Sets the end angle of the pie.
291
291
292 Full pie is 360 degrees where 0 degrees is at 12 a'clock.
292 Full pie is 360 degrees where 0 degrees is at 12 a'clock.
293
293
294 \a angle must be less than pie end angle. Default value is 0.
294 \a angle must be less than pie end angle. Default value is 0.
295
295
296 \sa pieStartAngle(), pieEndAngle(), setPieEndAngle()
296 \sa pieStartAngle(), pieEndAngle(), setPieEndAngle()
297 */
297 */
298 void QPieSeries::setPieStartAngle(qreal angle)
298 void QPieSeries::setPieStartAngle(qreal angle)
299 {
299 {
300 if (angle >= 0 && angle <= 360 && angle != m_pieStartAngle && angle <= m_pieEndAngle) {
300 if (angle >= 0 && angle <= 360 && angle != m_pieStartAngle && angle <= m_pieEndAngle) {
301 m_pieStartAngle = angle;
301 m_pieStartAngle = angle;
302 updateDerivativeData();
302 updateDerivativeData();
303 }
303 }
304 }
304 }
305
305
306 /*!
306 /*!
307 Gets the start angle of the pie.
307 Gets the start angle of the pie.
308
308
309 Full pie is 360 degrees where 0 degrees is at 12 a'clock. Default value is 360.
309 Full pie is 360 degrees where 0 degrees is at 12 a'clock. Default value is 360.
310
310
311 \sa setPieStartAngle(), pieEndAngle(), setPieEndAngle()
311 \sa setPieStartAngle(), pieEndAngle(), setPieEndAngle()
312 */
312 */
313 qreal QPieSeries::pieStartAngle() const
313 qreal QPieSeries::pieStartAngle() const
314 {
314 {
315 return m_pieStartAngle;
315 return m_pieStartAngle;
316 }
316 }
317
317
318 /*!
318 /*!
319 Sets the end angle of the pie.
319 Sets the end angle of the pie.
320
320
321 Full pie is 360 degrees where 0 degrees is at 12 a'clock.
321 Full pie is 360 degrees where 0 degrees is at 12 a'clock.
322
322
323 \a angle must be greater than start angle.
323 \a angle must be greater than start angle.
324
324
325 \sa pieEndAngle(), pieStartAngle(), setPieStartAngle()
325 \sa pieEndAngle(), pieStartAngle(), setPieStartAngle()
326 */
326 */
327 void QPieSeries::setPieEndAngle(qreal angle)
327 void QPieSeries::setPieEndAngle(qreal angle)
328 {
328 {
329 if (angle >= 0 && angle <= 360 && angle != m_pieEndAngle && angle >= m_pieStartAngle) {
329 if (angle >= 0 && angle <= 360 && angle != m_pieEndAngle && angle >= m_pieStartAngle) {
330 m_pieEndAngle = angle;
330 m_pieEndAngle = angle;
331 updateDerivativeData();
331 updateDerivativeData();
332 }
332 }
333 }
333 }
334
334
335 /*!
335 /*!
336 Returns the end angle of the pie.
336 Returns the end angle of the pie.
337
337
338 Full pie is 360 degrees where 0 degrees is at 12 a'clock.
338 Full pie is 360 degrees where 0 degrees is at 12 a'clock.
339
339
340 \sa setPieEndAngle(), pieStartAngle(), setPieStartAngle()
340 \sa setPieEndAngle(), pieStartAngle(), setPieStartAngle()
341 */
341 */
342 qreal QPieSeries::pieEndAngle() const
342 qreal QPieSeries::pieEndAngle() const
343 {
343 {
344 return m_pieEndAngle;
344 return m_pieEndAngle;
345 }
345 }
346
346
347 /*!
347 /*!
348 Sets the all the slice labels \a visible or invisible.
348 Sets the all the slice labels \a visible or invisible.
349
349
350 \sa QPieSlice::isLabelVisible(), QPieSlice::setLabelVisible()
350 \sa QPieSlice::isLabelVisible(), QPieSlice::setLabelVisible()
351 */
351 */
352 void QPieSeries::setLabelsVisible(bool visible)
352 void QPieSeries::setLabelsVisible(bool visible)
353 {
353 {
354 foreach (QPieSlice* s, m_slices)
354 foreach (QPieSlice* s, m_slices)
355 s->setLabelVisible(visible);
355 s->setLabelVisible(visible);
356 }
356 }
357
357
358 /*!
358 /*!
359 Returns the sum of all slice values in this series.
359 Returns the sum of all slice values in this series.
360
360
361 \sa QPieSlice::value(), QPieSlice::setValue()
361 \sa QPieSlice::value(), QPieSlice::setValue()
362 */
362 */
363 qreal QPieSeries::total() const
363 qreal QPieSeries::total() const
364 {
364 {
365 return m_total;
365 return m_total;
366 }
366 }
367
367
368 /*!
368 /*!
369 \fn void QPieSeries::changed()
369 \fn void QPieSeries::changed()
370
370
371 This signal emitted when something has changed in the series.
371 This signal emitted when something has changed in the series.
372
372
373 \sa QPieSeries::ChangeSet, QPieSlice::changed()
373 \sa QPieSeries::ChangeSet, QPieSlice::changed()
374 */
374 */
375
375
376 /*!
376 /*!
377 \fn void QPieSeries::clicked(QPieSlice* slice)
377 \fn void QPieSeries::clicked(QPieSlice* slice)
378
378
379 This signal is emitted when a \a slice has been clicked.
379 This signal is emitted when a \a slice has been clicked.
380
380
381 \sa QPieSlice::clicked()
381 \sa QPieSlice::clicked()
382 */
382 */
383
383
384 /*!
384 /*!
385 \fn void QPieSeries::hoverEnter(QPieSlice* slice)
385 \fn void QPieSeries::hoverEnter(QPieSlice* slice)
386
386
387 This signal is emitted when user has hovered over a \a slice.
387 This signal is emitted when user has hovered over a \a slice.
388
388
389 \sa QPieSlice::hoverEnter()
389 \sa QPieSlice::hoverEnter()
390 */
390 */
391
391
392 /*!
392 /*!
393 \fn void QPieSeries::hoverLeave(QPieSlice* slice)
393 \fn void QPieSeries::hoverLeave(QPieSlice* slice)
394
394
395 This signal is emitted when user has hovered away from a \a slice.
395 This signal is emitted when user has hovered away from a \a slice.
396
396
397 \sa QPieSlice::hoverLeave()
397 \sa QPieSlice::hoverLeave()
398 */
398 */
399
399
400 void QPieSeries::sliceChanged()
400 void QPieSeries::sliceChanged()
401 {
401 {
402 QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
402 QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
403 Q_ASSERT(m_slices.contains(slice));
403 Q_ASSERT(m_slices.contains(slice));
404 updateDerivativeData();
404 updateDerivativeData();
405 }
405 }
406
406
407 void QPieSeries::sliceClicked()
407 void QPieSeries::sliceClicked()
408 {
408 {
409 QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
409 QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
410 Q_ASSERT(m_slices.contains(slice));
410 Q_ASSERT(m_slices.contains(slice));
411 emit clicked(slice);
411 emit clicked(slice);
412 }
412 }
413
413
414 void QPieSeries::sliceHoverEnter()
414 void QPieSeries::sliceHoverEnter()
415 {
415 {
416 QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
416 QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
417 Q_ASSERT(m_slices.contains(slice));
417 Q_ASSERT(m_slices.contains(slice));
418 emit hoverEnter(slice);
418 emit hoverEnter(slice);
419 }
419 }
420
420
421 void QPieSeries::sliceHoverLeave()
421 void QPieSeries::sliceHoverLeave()
422 {
422 {
423 QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
423 QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
424 Q_ASSERT(m_slices.contains(slice));
424 Q_ASSERT(m_slices.contains(slice));
425 emit hoverLeave(slice);
425 emit hoverLeave(slice);
426 }
426 }
427
427
428 void QPieSeries::updateDerivativeData()
428 void QPieSeries::updateDerivativeData()
429 {
429 {
430 m_total = 0;
430 m_total = 0;
431
431
432 // nothing to do?
432 // nothing to do?
433 if (m_slices.count() == 0)
433 if (m_slices.count() == 0)
434 return;
434 return;
435
435
436 // calculate total
436 // calculate total
437 foreach (QPieSlice* s, m_slices)
437 foreach (QPieSlice* s, m_slices)
438 m_total += s->value();
438 m_total += s->value();
439
439
440 // nothing to show..
440 // nothing to show..
441 if (m_total == 0)
441 if (m_total == 0)
442 return;
442 return;
443
443
444 // update slice attributes
444 // update slice attributes
445 qreal sliceAngle = m_pieStartAngle;
445 qreal sliceAngle = m_pieStartAngle;
446 qreal pieSpan = m_pieEndAngle - m_pieStartAngle;
446 qreal pieSpan = m_pieEndAngle - m_pieStartAngle;
447 QVector<QPieSlice*> changed;
447 QVector<QPieSlice*> changed;
448 foreach (QPieSlice* s, m_slices) {
448 foreach (QPieSlice* s, m_slices) {
449
449
450 bool isChanged = false;
450 bool isChanged = false;
451
451
452 qreal percentage = s->value() / m_total;
452 qreal percentage = s->value() / m_total;
453 if (s->m_percentage != percentage) {
453 if (s->m_percentage != percentage) {
454 s->m_percentage = percentage;
454 s->m_percentage = percentage;
455 isChanged = true;
455 isChanged = true;
456 }
456 }
457
457
458 qreal sliceSpan = pieSpan * percentage;
458 qreal sliceSpan = pieSpan * percentage;
459 if (s->m_angleSpan != sliceSpan) {
459 if (s->m_angleSpan != sliceSpan) {
460 s->m_angleSpan = sliceSpan;
460 s->m_angleSpan = sliceSpan;
461 isChanged = true;
461 isChanged = true;
462 }
462 }
463
463
464 if (s->m_startAngle != sliceAngle) {
464 if (s->m_startAngle != sliceAngle) {
465 s->m_startAngle = sliceAngle;
465 s->m_startAngle = sliceAngle;
466 isChanged = true;
466 isChanged = true;
467 }
467 }
468 sliceAngle += sliceSpan;
468 sliceAngle += sliceSpan;
469
469
470 if (isChanged)
470 if (isChanged)
471 changed << s;
471 changed << s;
472 }
472 }
473
473
474 // emit signals
474 // emit signals
475 foreach (QPieSlice* s, changed)
475 foreach (QPieSlice* s, changed)
476 emit s->changed();
476 emit s->changed();
477 }
477 }
478
478
479 bool QPieSeries::setModel(QAbstractItemModel* model)
479 bool QPieSeries::setModel(QAbstractItemModel* model)
480 {
480 {
481 // disconnect signals from old model
481 // disconnect signals from old model
482 if(m_model)
482 if(m_model)
483 {
483 {
484 disconnect(m_model, 0, this, 0);
484 disconnect(m_model, 0, this, 0);
485 m_mapValues = -1;
485 m_mapValues = -1;
486 m_mapLabels = -1;
486 m_mapLabels = -1;
487 m_mapOrientation = Qt::Vertical;
487 m_mapOrientation = Qt::Vertical;
488 }
488 }
489
489
490 // set new model
490 // set new model
491 if(model)
491 if(model)
492 {
492 {
493 m_model = model;
493 m_model = model;
494 return true;
494 return true;
495 }
495 }
496 else
496 else
497 {
497 {
498 m_model = NULL;
498 m_model = NULL;
499 return false;
499 return false;
500 }
500 }
501 }
501 }
502
502
503 void QPieSeries::setModelMapping(int modelValuesLine, int modelLabelsLine, Qt::Orientation orientation)
503 void QPieSeries::setModelMapping(int modelValuesLine, int modelLabelsLine, Qt::Orientation orientation)
504 {
504 {
505 if (m_model == NULL)
505 if (m_model == NULL)
506 return;
506 return;
507 m_mapValues = modelValuesLine;
507 m_mapValues = modelValuesLine;
508 m_mapLabels = modelLabelsLine;
508 m_mapLabels = modelLabelsLine;
509 m_mapOrientation = orientation;
509 m_mapOrientation = orientation;
510
510
511 // connect the signals
511 // connect the signals
512 if (m_mapOrientation == Qt::Vertical)
512 if (m_mapOrientation == Qt::Vertical)
513 {
513 {
514 connect(m_model,SIGNAL(dataChanged(QModelIndex,QModelIndex)), this, SLOT(modelUpdated(QModelIndex, QModelIndex)));
514 connect(m_model,SIGNAL(dataChanged(QModelIndex,QModelIndex)), this, SLOT(modelUpdated(QModelIndex, QModelIndex)));
515 connect(m_model,SIGNAL(rowsInserted(QModelIndex, int, int)), this, SLOT(modelDataAdded(QModelIndex,int,int)));
515 connect(m_model,SIGNAL(rowsInserted(QModelIndex, int, int)), this, SLOT(modelDataAdded(QModelIndex,int,int)));
516 connect(m_model, SIGNAL(rowsRemoved(QModelIndex, int, int)), this, SLOT(modelDataRemoved(QModelIndex,int,int)));
516 connect(m_model, SIGNAL(rowsRemoved(QModelIndex, int, int)), this, SLOT(modelDataRemoved(QModelIndex,int,int)));
517 }
517 }
518 else
518 else
519 {
519 {
520 connect(m_model,SIGNAL(dataChanged(QModelIndex,QModelIndex)), this, SLOT(modelUpdated(QModelIndex, QModelIndex)));
520 connect(m_model,SIGNAL(dataChanged(QModelIndex,QModelIndex)), this, SLOT(modelUpdated(QModelIndex, QModelIndex)));
521 connect(m_model,SIGNAL(columnsInserted(QModelIndex, int, int)), this, SLOT(modelDataAdded(QModelIndex,int,int)));
521 connect(m_model,SIGNAL(columnsInserted(QModelIndex, int, int)), this, SLOT(modelDataAdded(QModelIndex,int,int)));
522 connect(m_model, SIGNAL(columnsRemoved(QModelIndex, int, int)), this, SLOT(modelDataRemoved(QModelIndex,int,int)));
522 connect(m_model, SIGNAL(columnsRemoved(QModelIndex, int, int)), this, SLOT(modelDataRemoved(QModelIndex,int,int)));
523 }
523 }
524
524
525 // create the initial slices set
525 // create the initial slices set
526 if (m_mapOrientation == Qt::Vertical)
526 if (m_mapOrientation == Qt::Vertical)
527 for (int i = 0; i < m_model->rowCount(); i++)
527 for (int i = 0; i < m_model->rowCount(); i++)
528 add(m_model->data(m_model->index(i, m_mapValues), Qt::DisplayRole).toDouble(), m_model->data(m_model->index(i, m_mapLabels), Qt::DisplayRole).toString());
528 add(m_model->data(m_model->index(i, m_mapValues), Qt::DisplayRole).toDouble(), m_model->data(m_model->index(i, m_mapLabels), Qt::DisplayRole).toString());
529 else
529 else
530 for (int i = 0; i < m_model->columnCount(); i++)
530 for (int i = 0; i < m_model->columnCount(); i++)
531 add(m_model->data(m_model->index(m_mapValues, i), Qt::DisplayRole).toDouble(), m_model->data(m_model->index(m_mapLabels, i), Qt::DisplayRole).toString());
531 add(m_model->data(m_model->index(m_mapValues, i), Qt::DisplayRole).toDouble(), m_model->data(m_model->index(m_mapLabels, i), Qt::DisplayRole).toString());
532
532
533
533
534 }
534 }
535
535
536 void QPieSeries::modelUpdated(QModelIndex topLeft, QModelIndex bottomRight)
536 void QPieSeries::modelUpdated(QModelIndex topLeft, QModelIndex bottomRight)
537 {
537 {
538 Q_UNUSED(bottomRight)
538 Q_UNUSED(bottomRight)
539
539
540 if (m_mapOrientation == Qt::Vertical)
540 if (m_mapOrientation == Qt::Vertical)
541 {
541 {
542 // slices().at(topLeft.row())->setValue(m_model->data(m_model->index(topLeft.row(), topLeft.column()), Qt::DisplayRole).toDouble());
542 // slices().at(topLeft.row())->setValue(m_model->data(m_model->index(topLeft.row(), topLeft.column()), Qt::DisplayRole).toDouble());
543 if (topLeft.column() == m_mapValues)
543 if (topLeft.column() == m_mapValues)
544 slices().at(topLeft.row())->setValue(m_model->data(topLeft, Qt::DisplayRole).toDouble());
544 if (m_mapValues == m_mapLabels)
545 {
546 slices().at(topLeft.row())->setValue(m_model->data(topLeft, Qt::DisplayRole).toDouble());
547 slices().at(topLeft.row())->setLabel(m_model->data(topLeft, Qt::DisplayRole).toString());
548 }
549 else
550 {
551 slices().at(topLeft.row())->setValue(m_model->data(topLeft, Qt::DisplayRole).toDouble());
552 }
545 else if (topLeft.column() == m_mapLabels)
553 else if (topLeft.column() == m_mapLabels)
546 slices().at(topLeft.row())->setLabel(m_model->data(topLeft, Qt::DisplayRole).toString());
554 slices().at(topLeft.row())->setLabel(m_model->data(topLeft, Qt::DisplayRole).toString());
547 }
555 }
548 else
556 else
549 {
557 {
550 // slices().at(topLeft.column())->setValue(m_model->data(m_model->index(topLeft.row(), topLeft.column()), Qt::DisplayRole).toDouble());
558 // slices().at(topLeft.column())->setValue(m_model->data(m_model->index(topLeft.row(), topLeft.column()), Qt::DisplayRole).toDouble());
551 if (topLeft.row() == m_mapValues)
559 if (topLeft.row() == m_mapValues)
552 slices().at(topLeft.column())->setValue(m_model->data(topLeft, Qt::DisplayRole).toDouble());
560 if (m_mapValues == m_mapLabels)
561 {
562 slices().at(topLeft.column())->setValue(m_model->data(topLeft, Qt::DisplayRole).toDouble());
563 slices().at(topLeft.column())->setLabel(m_model->data(topLeft, Qt::DisplayRole).toString());
564 }
565 else
566 {
567 slices().at(topLeft.column())->setValue(m_model->data(topLeft, Qt::DisplayRole).toDouble());
568 }
553 else if (topLeft.row() == m_mapLabels)
569 else if (topLeft.row() == m_mapLabels)
554 slices().at(topLeft.column())->setLabel(m_model->data(topLeft, Qt::DisplayRole).toString());
570 slices().at(topLeft.column())->setLabel(m_model->data(topLeft, Qt::DisplayRole).toString());
555 }
571 }
556 }
572 }
557
573
558 void QPieSeries::modelDataAdded(QModelIndex parent, int start, int end)
574 void QPieSeries::modelDataAdded(QModelIndex parent, int start, int end)
559 {
575 {
560 Q_UNUSED(parent)
576 Q_UNUSED(parent)
561 Q_UNUSED(end)
577 Q_UNUSED(end)
562
578
563 QPieSlice* newSlice = new QPieSlice;
579 QPieSlice* newSlice = new QPieSlice;
564 newSlice->setLabelVisible(true);
580 newSlice->setLabelVisible(true);
565 if (m_mapOrientation == Qt::Vertical)
581 if (m_mapOrientation == Qt::Vertical)
566 {
582 {
567 newSlice->setValue(m_model->data(m_model->index(start, m_mapValues), Qt::DisplayRole).toDouble());
583 newSlice->setValue(m_model->data(m_model->index(start, m_mapValues), Qt::DisplayRole).toDouble());
568 newSlice->setLabel(m_model->data(m_model->index(start, m_mapLabels), Qt::DisplayRole).toString());
584 newSlice->setLabel(m_model->data(m_model->index(start, m_mapLabels), Qt::DisplayRole).toString());
569 }
585 }
570 else
586 else
571 {
587 {
572 newSlice->setValue(m_model->data(m_model->index(m_mapValues, start), Qt::DisplayRole).toDouble());
588 newSlice->setValue(m_model->data(m_model->index(m_mapValues, start), Qt::DisplayRole).toDouble());
573 newSlice->setLabel(m_model->data(m_model->index(m_mapLabels, start), Qt::DisplayRole).toString());
589 newSlice->setLabel(m_model->data(m_model->index(m_mapLabels, start), Qt::DisplayRole).toString());
574 }
590 }
575
591
576 insert(start, newSlice);
592 insert(start, newSlice);
577 }
593 }
578
594
579 void QPieSeries::modelDataRemoved(QModelIndex parent, int start, int end)
595 void QPieSeries::modelDataRemoved(QModelIndex parent, int start, int end)
580 {
596 {
581 Q_UNUSED(parent)
597 Q_UNUSED(parent)
582 Q_UNUSED(end)
598 Q_UNUSED(end)
583 remove(slices().at(start));
599 remove(slices().at(start));
584 }
600 }
585
601
586 #include "moc_qpieseries.cpp"
602 #include "moc_qpieseries.cpp"
587
603
588 QTCOMMERCIALCHART_END_NAMESPACE
604 QTCOMMERCIALCHART_END_NAMESPACE
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