@@ -0,0 +1,5 | |||
|
1 | !include( ../examples.pri ) { | |
|
2 | error( "Couldn't find the examples.pri file!" ) | |
|
3 | } | |
|
4 | TARGET = donutchart | |
|
5 | SOURCES += main.cpp |
@@ -0,0 +1,70 | |||
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1 | /**************************************************************************** | |
|
2 | ** | |
|
3 | ** Copyright (C) 2012 Digia Plc | |
|
4 | ** All rights reserved. | |
|
5 | ** For any questions to Digia, please use contact form at http://qt.digia.com | |
|
6 | ** | |
|
7 | ** This file is part of the Qt Commercial Charts Add-on. | |
|
8 | ** | |
|
9 | ** $QT_BEGIN_LICENSE$ | |
|
10 | ** Licensees holding valid Qt Commercial licenses may use this file in | |
|
11 | ** accordance with the Qt Commercial License Agreement provided with the | |
|
12 | ** Software or, alternatively, in accordance with the terms contained in | |
|
13 | ** a written agreement between you and Digia. | |
|
14 | ** | |
|
15 | ** If you have questions regarding the use of this file, please use | |
|
16 | ** contact form at http://qt.digia.com | |
|
17 | ** $QT_END_LICENSE$ | |
|
18 | ** | |
|
19 | ****************************************************************************/ | |
|
20 | ||
|
21 | #include <QApplication> | |
|
22 | #include <QMainWindow> | |
|
23 | #include <QChartView> | |
|
24 | #include <QPieSeries> | |
|
25 | #include <QPieSlice> | |
|
26 | ||
|
27 | QTCOMMERCIALCHART_USE_NAMESPACE | |
|
28 | ||
|
29 | int main(int argc, char *argv[]) | |
|
30 | { | |
|
31 | QApplication a(argc, argv); | |
|
32 | ||
|
33 | //![1] | |
|
34 | QPieSeries *series = new QPieSeries(); | |
|
35 | series->setHoleSize(0.35); | |
|
36 | series->append("Jane", 1); | |
|
37 | series->append("Joe", 2); | |
|
38 | series->append("Andy", 3); | |
|
39 | series->append("Barbara", 4); | |
|
40 | series->append("Axel", 5); | |
|
41 | //![1] | |
|
42 | ||
|
43 | //![2] | |
|
44 | QPieSlice *slice = series->slices().at(1); | |
|
45 | slice->setExploded(); | |
|
46 | slice->setLabelVisible(); | |
|
47 | slice->setPen(QPen(Qt::darkGreen, 2)); | |
|
48 | slice->setBrush(Qt::green); | |
|
49 | //![2] | |
|
50 | ||
|
51 | //![3] | |
|
52 | QChart* chart = new QChart(); | |
|
53 | chart->addSeries(series); | |
|
54 | chart->setTitle("Simple donutchart example"); | |
|
55 | //![3] | |
|
56 | ||
|
57 | //![4] | |
|
58 | QChartView* chartView = new QChartView(chart); | |
|
59 | chartView->setRenderHint(QPainter::Antialiasing); | |
|
60 | //![4] | |
|
61 | ||
|
62 | //![5] | |
|
63 | QMainWindow window; | |
|
64 | window.setCentralWidget(chartView); | |
|
65 | window.resize(400, 300); | |
|
66 | window.show(); | |
|
67 | //![5] | |
|
68 | ||
|
69 | return a.exec(); | |
|
70 | } |
@@ -1,34 +1,35 | |||
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1 | 1 | CURRENTLY_BUILDING_COMPONENTS = "examples" |
|
2 | 2 | !include( ../config.pri ) { |
|
3 | 3 | error( "Couldn't find the config.pri file!" ) |
|
4 | 4 | } |
|
5 | 5 | |
|
6 | 6 | TEMPLATE = subdirs |
|
7 | 7 | SUBDIRS += \ |
|
8 | 8 | areachart \ |
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9 | 9 | customchart \ |
|
10 | 10 | linechart \ |
|
11 | 11 | percentbarchart \ |
|
12 | 12 | piechart \ |
|
13 | 13 | piechartdrilldown \ |
|
14 | 14 | presenterchart \ |
|
15 | 15 | scatterchart \ |
|
16 | 16 | scatterinteractions \ |
|
17 | 17 | splinechart \ |
|
18 | 18 | stackedbarchart \ |
|
19 | 19 | stackedbarchartdrilldown \ |
|
20 | 20 | zoomlinechart \ |
|
21 | 21 | modeldata \ |
|
22 | 22 | barchart \ |
|
23 | 23 | legend \ |
|
24 | 24 | barmodelmapper \ |
|
25 | 25 | qmlpiechart \ |
|
26 | 26 | lineandbar \ |
|
27 | 27 | horizontalbarchart \ |
|
28 | 28 | horizontalstackedbarchart \ |
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29 | 29 | horizontalpercentbarchart \ |
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30 | 30 | donut \ |
|
31 | 31 | donutbreakdown \ |
|
32 | 32 | scrollchart \ |
|
33 | 33 | datetimeaxis \ |
|
34 | populationpyramid | |
|
34 | populationpyramid \ | |
|
35 | donutchart |
@@ -1,275 +1,284 | |||
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1 | 1 | /**************************************************************************** |
|
2 | 2 | ** |
|
3 | 3 | ** Copyright (C) 2012 Digia Plc |
|
4 | 4 | ** All rights reserved. |
|
5 | 5 | ** For any questions to Digia, please use contact form at http://qt.digia.com |
|
6 | 6 | ** |
|
7 | 7 | ** This file is part of the Qt Commercial Charts Add-on. |
|
8 | 8 | ** |
|
9 | 9 | ** $QT_BEGIN_LICENSE$ |
|
10 | 10 | ** Licensees holding valid Qt Commercial licenses may use this file in |
|
11 | 11 | ** accordance with the Qt Commercial License Agreement provided with the |
|
12 | 12 | ** Software or, alternatively, in accordance with the terms contained in |
|
13 | 13 | ** a written agreement between you and Digia. |
|
14 | 14 | ** |
|
15 | 15 | ** If you have questions regarding the use of this file, please use |
|
16 | 16 | ** contact form at http://qt.digia.com |
|
17 | 17 | ** $QT_END_LICENSE$ |
|
18 | 18 | ** |
|
19 | 19 | ****************************************************************************/ |
|
20 | 20 | |
|
21 | 21 | #include "piesliceitem_p.h" |
|
22 | 22 | #include "piechartitem_p.h" |
|
23 | 23 | #include "qpieseries.h" |
|
24 | 24 | #include "qpieslice.h" |
|
25 | 25 | #include "chartpresenter_p.h" |
|
26 | 26 | #include <QPainter> |
|
27 | 27 | #include <qmath.h> |
|
28 | 28 | #include <QGraphicsSceneEvent> |
|
29 | 29 | #include <QTime> |
|
30 | 30 | #include <QDebug> |
|
31 | 31 | |
|
32 | 32 | QTCOMMERCIALCHART_BEGIN_NAMESPACE |
|
33 | 33 | |
|
34 | 34 | QPointF offset(qreal angle, qreal length) |
|
35 | 35 | { |
|
36 | 36 | qreal dx = qSin(angle*(M_PI/180)) * length; |
|
37 | 37 | qreal dy = qCos(angle*(M_PI/180)) * length; |
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38 | 38 | return QPointF(dx, -dy); |
|
39 | 39 | } |
|
40 | 40 | |
|
41 | 41 | PieSliceItem::PieSliceItem(QGraphicsItem* parent) |
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42 | 42 | :QGraphicsObject(parent), |
|
43 | 43 | m_hovered(false) |
|
44 | 44 | { |
|
45 | 45 | setAcceptHoverEvents(true); |
|
46 | 46 | setAcceptedMouseButtons(Qt::MouseButtonMask); |
|
47 | 47 | setZValue(ChartPresenter::PieSeriesZValue); |
|
48 | 48 | } |
|
49 | 49 | |
|
50 | 50 | PieSliceItem::~PieSliceItem() |
|
51 | 51 | { |
|
52 | 52 | // If user is hovering over the slice and it gets destroyed we do |
|
53 | 53 | // not get a hover leave event. So we must emit the signal here. |
|
54 | 54 | if (m_hovered) |
|
55 | 55 | emit hovered(false); |
|
56 | 56 | } |
|
57 | 57 | |
|
58 | 58 | QRectF PieSliceItem::boundingRect() const |
|
59 | 59 | { |
|
60 | 60 | return m_boundingRect; |
|
61 | 61 | } |
|
62 | 62 | |
|
63 | 63 | QPainterPath PieSliceItem::shape() const |
|
64 | 64 | { |
|
65 | 65 | // Don't include the label and label arm. |
|
66 | 66 | // This is used to detect a mouse clicks. We do not want clicks from label. |
|
67 | 67 | return m_slicePath; |
|
68 | 68 | } |
|
69 | 69 | |
|
70 | 70 | void PieSliceItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* /*option*/, QWidget* /*widget*/) |
|
71 | 71 | { |
|
72 | 72 | painter->save(); |
|
73 | 73 | painter->setClipRect(parentItem()->boundingRect()); |
|
74 | 74 | painter->setPen(m_data.m_slicePen); |
|
75 | 75 | painter->setBrush(m_data.m_sliceBrush); |
|
76 | 76 | painter->drawPath(m_slicePath); |
|
77 | 77 | painter->restore(); |
|
78 | 78 | |
|
79 | 79 | if (m_data.m_isLabelVisible) { |
|
80 | 80 | painter->save(); |
|
81 | 81 | |
|
82 | 82 | // Pen for label arm not defined in the QPieSeries api, let's use brush's color instead |
|
83 | 83 | // Also, the drawText actually uses the pen color for the text color (unlike QGraphicsSimpleTextItem) |
|
84 | 84 | painter->setPen(m_data.m_labelBrush.color()); |
|
85 | 85 | painter->setBrush(m_data.m_labelBrush); |
|
86 | 86 | painter->setFont(m_data.m_labelFont); |
|
87 | 87 | |
|
88 | 88 | switch (m_data.m_labelPosition) |
|
89 | 89 | { |
|
90 | 90 | case QPieSlice::LabelOutside: |
|
91 | 91 | painter->setClipRect(parentItem()->boundingRect()); |
|
92 | 92 | painter->strokePath(m_labelArmPath, m_data.m_labelBrush.color()); |
|
93 | 93 | painter->drawText(m_labelTextRect, Qt::AlignCenter, m_data.m_labelText); |
|
94 | 94 | break; |
|
95 | 95 | case QPieSlice::LabelInsideHorizontal: |
|
96 | 96 | painter->setClipPath(m_slicePath); |
|
97 | 97 | painter->drawText(m_labelTextRect, Qt::AlignCenter, m_data.m_labelText); |
|
98 | 98 | break; |
|
99 | 99 | case QPieSlice::LabelInsideTangential: |
|
100 | 100 | painter->setClipPath(m_slicePath); |
|
101 | 101 | painter->translate(m_labelTextRect.center()); |
|
102 | 102 | painter->rotate(m_data.m_startAngle + m_data.m_angleSpan / 2); |
|
103 | 103 | painter->drawText(-m_labelTextRect.width() / 2, -m_labelTextRect.height() / 2, m_labelTextRect.width(), m_labelTextRect.height(), Qt::AlignCenter, m_data.m_labelText); |
|
104 | 104 | break; |
|
105 | 105 | case QPieSlice::LabelInsideNormal: |
|
106 | 106 | painter->setClipPath(m_slicePath); |
|
107 | 107 | painter->translate(m_labelTextRect.center()); |
|
108 | 108 | if (m_data.m_startAngle + m_data.m_angleSpan / 2 < 180) |
|
109 | 109 | painter->rotate(m_data.m_startAngle + m_data.m_angleSpan / 2 - 90); |
|
110 | 110 | else |
|
111 | 111 | painter->rotate(m_data.m_startAngle + m_data.m_angleSpan / 2 + 90); |
|
112 | 112 | painter->drawText(-m_labelTextRect.width() / 2, -m_labelTextRect.height() / 2, m_labelTextRect.width(), m_labelTextRect.height(), Qt::AlignCenter, m_data.m_labelText); |
|
113 | 113 | break; |
|
114 | 114 | } |
|
115 | 115 | |
|
116 | 116 | painter->restore(); |
|
117 | 117 | } |
|
118 | 118 | } |
|
119 | 119 | |
|
120 | 120 | void PieSliceItem::hoverEnterEvent(QGraphicsSceneHoverEvent* /*event*/) |
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121 | 121 | { |
|
122 | 122 | m_hovered = true; |
|
123 | 123 | emit hovered(true); |
|
124 | 124 | } |
|
125 | 125 | |
|
126 | 126 | void PieSliceItem::hoverLeaveEvent(QGraphicsSceneHoverEvent* /*event*/) |
|
127 | 127 | { |
|
128 | 128 | m_hovered = false; |
|
129 | 129 | emit hovered(false); |
|
130 | 130 | } |
|
131 | 131 | |
|
132 | 132 | void PieSliceItem::mousePressEvent(QGraphicsSceneMouseEvent *event) |
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133 | 133 | { |
|
134 | 134 | emit clicked(event->buttons()); |
|
135 | 135 | QGraphicsItem::mousePressEvent(event); |
|
136 | 136 | } |
|
137 | 137 | |
|
138 | 138 | void PieSliceItem::setLayout(const PieSliceData &sliceData) |
|
139 | 139 | { |
|
140 | 140 | m_data = sliceData; |
|
141 | 141 | updateGeometry(); |
|
142 | 142 | update(); |
|
143 | 143 | } |
|
144 | 144 | |
|
145 | 145 | void PieSliceItem::updateGeometry() |
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146 | 146 | { |
|
147 | 147 | if (m_data.m_radius <= 0) |
|
148 | 148 | return; |
|
149 | 149 | |
|
150 | 150 | prepareGeometryChange(); |
|
151 | 151 | |
|
152 | 152 | // slice path |
|
153 | 153 | qreal centerAngle; |
|
154 | 154 | QPointF armStart; |
|
155 | 155 | m_slicePath = slicePath(m_data.m_center, m_data.m_radius, m_data.m_startAngle, m_data.m_angleSpan, ¢erAngle, &armStart); |
|
156 | 156 | |
|
157 | 157 | // text rect |
|
158 | 158 | QFontMetricsF fm(m_data.m_labelFont); |
|
159 | 159 | m_labelTextRect = QRectF(0, 0, fm.width(m_data.m_labelText), fm.height()); |
|
160 | 160 | |
|
161 | 161 | // label arm path |
|
162 | 162 | QPointF labelTextStart; |
|
163 | 163 | m_labelArmPath = labelArmPath(armStart, centerAngle, m_data.m_radius * m_data.m_labelArmLengthFactor, m_labelTextRect.width(), &labelTextStart); |
|
164 | 164 | |
|
165 | 165 | // text position |
|
166 | 166 | switch (m_data.m_labelPosition) |
|
167 | 167 | { |
|
168 | 168 | case QPieSlice::LabelOutside: |
|
169 | 169 | m_labelTextRect.moveBottomLeft(labelTextStart); |
|
170 | 170 | break; |
|
171 | 171 | case QPieSlice::LabelInsideHorizontal: |
|
172 | case QPieSlice::LabelInsideTangential: | |
|
172 | case QPieSlice::LabelInsideTangential:{ | |
|
173 | QPointF textCenter; | |
|
174 | if (m_data.m_holeRadius > 0) | |
|
175 | textCenter = m_data.m_center + offset(centerAngle, m_data.m_holeRadius + (m_data.m_radius - m_data.m_holeRadius) / 2); | |
|
176 | else | |
|
177 | textCenter = m_data.m_center + offset(centerAngle, m_data.m_radius / 2); | |
|
178 | m_labelTextRect.moveCenter(textCenter); | |
|
179 | break; | |
|
180 | } | |
|
173 | 181 | case QPieSlice::LabelInsideNormal:{ |
|
182 | // TODO: align the label text to the slice arc insead of half the radius | |
|
174 | 183 | QPointF textCenter; |
|
175 | 184 | if (m_data.m_holeRadius > 0) |
|
176 | 185 | textCenter = m_data.m_center + offset(centerAngle, m_data.m_holeRadius + (m_data.m_radius - m_data.m_holeRadius) / 2); |
|
177 | 186 | else |
|
178 | 187 | textCenter = m_data.m_center + offset(centerAngle, m_data.m_radius / 2); |
|
179 | 188 | m_labelTextRect.moveCenter(textCenter); |
|
180 | 189 | break; |
|
181 | 190 | } |
|
182 | 191 | } |
|
183 | 192 | |
|
184 | 193 | // bounding rect |
|
185 | 194 | if (m_data.m_isLabelVisible) |
|
186 | 195 | m_boundingRect = m_slicePath.boundingRect().united(m_labelArmPath.boundingRect()).united(m_labelTextRect); |
|
187 | 196 | else |
|
188 | 197 | m_boundingRect = m_slicePath.boundingRect(); |
|
189 | 198 | } |
|
190 | 199 | |
|
191 | 200 | QPointF PieSliceItem::sliceCenter(QPointF point, qreal radius, QPieSlice *slice) |
|
192 | 201 | { |
|
193 | 202 | if (slice->isExploded()) { |
|
194 | 203 | qreal centerAngle = slice->startAngle() + (slice->angleSpan()/2); |
|
195 | 204 | qreal len = radius * slice->explodeDistanceFactor(); |
|
196 | 205 | point += offset(centerAngle, len); |
|
197 | 206 | } |
|
198 | 207 | return point; |
|
199 | 208 | } |
|
200 | 209 | |
|
201 | 210 | QPainterPath PieSliceItem::slicePath(QPointF center, qreal radius, qreal startAngle, qreal angleSpan, qreal *centerAngle, QPointF* armStart) |
|
202 | 211 | { |
|
203 | 212 | // calculate center angle |
|
204 | 213 | *centerAngle = startAngle + (angleSpan/2); |
|
205 | 214 | |
|
206 | 215 | // calculate slice rectangle |
|
207 | 216 | QRectF rect(center.x()-radius, center.y()-radius, radius*2, radius*2); |
|
208 | 217 | |
|
209 | 218 | // slice path |
|
210 | 219 | QPainterPath path; |
|
211 | 220 | if (m_data.m_holeRadius > 0) { |
|
212 | 221 | QRectF insideRect(center.x() - m_data.m_holeRadius, center.y()-m_data.m_holeRadius, m_data.m_holeRadius*2, m_data.m_holeRadius*2); |
|
213 | 222 | path.arcMoveTo(rect, -startAngle + 90); |
|
214 | 223 | path.arcTo(rect, -startAngle + 90, -angleSpan); |
|
215 | 224 | path.arcTo(insideRect, -startAngle + 90 - angleSpan, angleSpan); |
|
216 | 225 | path.closeSubpath(); |
|
217 | 226 | } else { |
|
218 | 227 | path.moveTo(rect.center()); |
|
219 | 228 | path.arcTo(rect, -startAngle + 90, -angleSpan); |
|
220 | 229 | path.closeSubpath(); |
|
221 | 230 | } |
|
222 | 231 | |
|
223 | 232 | // calculate label arm start point |
|
224 | 233 | *armStart = center; |
|
225 | 234 | *armStart += offset(*centerAngle, radius + PIESLICE_LABEL_GAP); |
|
226 | 235 | |
|
227 | 236 | return path; |
|
228 | 237 | } |
|
229 | 238 | |
|
230 | 239 | QPainterPath PieSliceItem::labelArmPath(QPointF start, qreal angle, qreal length, qreal textWidth, QPointF *textStart) |
|
231 | 240 | { |
|
232 | 241 | // Normalize the angle to 0-360 range |
|
233 | 242 | // NOTE: We are using int here on purpose. Depenging on platform and hardware |
|
234 | 243 | // qreal can be a double, float or something the user gives to the Qt configure |
|
235 | 244 | // (QT_COORD_TYPE). Compilers do not seem to support modulo for double or float |
|
236 | 245 | // but there are fmod() and fmodf() functions for that. So instead of some #ifdef |
|
237 | 246 | // that might break we just use int. Precision for this is just fine for our needs. |
|
238 | 247 | int normalized = angle * 10.0; |
|
239 | 248 | normalized = normalized % 3600; |
|
240 | 249 | if (normalized < 0) |
|
241 | 250 | normalized += 3600; |
|
242 | 251 | angle = (qreal) normalized / 10.0; |
|
243 | 252 | |
|
244 | 253 | // prevent label arm pointing straight down because it will look bad |
|
245 | 254 | if (angle < 180 && angle > 170) |
|
246 | 255 | angle = 170; |
|
247 | 256 | if (angle > 180 && angle < 190) |
|
248 | 257 | angle = 190; |
|
249 | 258 | |
|
250 | 259 | // line from slice to label |
|
251 | 260 | QPointF parm1 = start + offset(angle, length); |
|
252 | 261 | |
|
253 | 262 | // line to underline the label |
|
254 | 263 | QPointF parm2 = parm1; |
|
255 | 264 | if (angle < 180) { // arm swings the other way on the left side |
|
256 | 265 | parm2 += QPointF(textWidth, 0); |
|
257 | 266 | *textStart = parm1; |
|
258 | 267 | } |
|
259 | 268 | else { |
|
260 | 269 | parm2 += QPointF(-textWidth,0); |
|
261 | 270 | *textStart = parm2; |
|
262 | 271 | } |
|
263 | 272 | |
|
264 | 273 | QPainterPath path; |
|
265 | 274 | path.moveTo(start); |
|
266 | 275 | path.lineTo(parm1); |
|
267 | 276 | path.lineTo(parm2); |
|
268 | 277 | |
|
269 | 278 | return path; |
|
270 | 279 | } |
|
271 | 280 | |
|
272 | 281 | #include "moc_piesliceitem_p.cpp" |
|
273 | 282 | |
|
274 | 283 | QTCOMMERCIALCHART_END_NAMESPACE |
|
275 | 284 |
@@ -1,872 +1,871 | |||
|
1 | 1 | /**************************************************************************** |
|
2 | 2 | ** |
|
3 | 3 | ** Copyright (C) 2012 Digia Plc |
|
4 | 4 | ** All rights reserved. |
|
5 | 5 | ** For any questions to Digia, please use contact form at http://qt.digia.com |
|
6 | 6 | ** |
|
7 | 7 | ** This file is part of the Qt Commercial Charts Add-on. |
|
8 | 8 | ** |
|
9 | 9 | ** $QT_BEGIN_LICENSE$ |
|
10 | 10 | ** Licensees holding valid Qt Commercial licenses may use this file in |
|
11 | 11 | ** accordance with the Qt Commercial License Agreement provided with the |
|
12 | 12 | ** Software or, alternatively, in accordance with the terms contained in |
|
13 | 13 | ** a written agreement between you and Digia. |
|
14 | 14 | ** |
|
15 | 15 | ** If you have questions regarding the use of this file, please use |
|
16 | 16 | ** contact form at http://qt.digia.com |
|
17 | 17 | ** $QT_END_LICENSE$ |
|
18 | 18 | ** |
|
19 | 19 | ****************************************************************************/ |
|
20 | 20 | |
|
21 | 21 | #include "qpieseries.h" |
|
22 | 22 | #include "qpieseries_p.h" |
|
23 | 23 | #include "qpieslice.h" |
|
24 | 24 | #include "qpieslice_p.h" |
|
25 | 25 | #include "pieslicedata_p.h" |
|
26 | 26 | #include "chartdataset_p.h" |
|
27 | 27 | #include "charttheme_p.h" |
|
28 | 28 | #include "legendmarker_p.h" |
|
29 | 29 | #include "qabstractaxis.h" |
|
30 | 30 | #include "pieanimation_p.h" |
|
31 | 31 | |
|
32 | 32 | QTCOMMERCIALCHART_BEGIN_NAMESPACE |
|
33 | 33 | |
|
34 | 34 | /*! |
|
35 | 35 | \class QPieSeries |
|
36 | 36 | \brief Pie series API for QtCommercial Charts |
|
37 | 37 | |
|
38 | 38 | The pie series defines a pie chart which consists of pie slices which are defined as QPieSlice objects. |
|
39 | 39 | The slices can have any values as the QPieSeries will calculate its relative value to the sum of all slices. |
|
40 | 40 | The actual slice size is determined by that relative value. |
|
41 | 41 | |
|
42 | 42 | Pie size and position on the chart is controlled by using relative values which range from 0.0 to 1.0 |
|
43 | 43 | These relate to the actual chart rectangle. |
|
44 | 44 | |
|
45 | 45 | By default the pie is defined as a full pie but it can also be a partial pie. |
|
46 | 46 | This can be done by setting a starting angle and angle span to the series. |
|
47 | 47 | Full pie is 360 degrees where 0 is at 12 a'clock. |
|
48 | 48 | |
|
49 | 49 | See the \l {PieChart Example} {pie chart example} to learn how to create a simple pie chart. |
|
50 | 50 | \image examples_piechart.png |
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51 | 51 | */ |
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52 | 52 | /*! |
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53 | 53 | \qmlclass PieSeries QPieSeries |
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54 | 54 | \inherits AbstractSeries |
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55 | 55 | |
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56 | 56 | The following QML shows how to create a simple pie chart. |
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57 | 57 | |
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58 | 58 | \snippet ../demos/qmlchart/qml/qmlchart/View1.qml 1 |
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59 | 59 | |
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60 | 60 | \beginfloatleft |
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61 | 61 | \image demos_qmlchart1.png |
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62 | 62 | \endfloat |
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63 | 63 | \clearfloat |
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64 | 64 | */ |
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65 | 65 | |
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66 | 66 | /*! |
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67 | 67 | \property QPieSeries::horizontalPosition |
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68 | 68 | \brief Defines the horizontal position of the pie. |
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69 | 69 | |
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70 | 70 | The value is a relative value to the chart rectangle where: |
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71 | 71 | |
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72 | 72 | \list |
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73 | 73 | \o 0.0 is the absolute left. |
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74 | 74 | \o 1.0 is the absolute right. |
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75 | 75 | \endlist |
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76 | 76 | Default value is 0.5 (center). |
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77 | 77 | \sa verticalPosition |
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78 | 78 | */ |
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79 | 79 | |
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80 | 80 | /*! |
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81 | 81 | \qmlproperty real PieSeries::horizontalPosition |
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82 | 82 | |
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83 | 83 | Defines the horizontal position of the pie. |
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84 | 84 | |
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85 | 85 | The value is a relative value to the chart rectangle where: |
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86 | 86 | |
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87 | 87 | \list |
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88 | 88 | \o 0.0 is the absolute left. |
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89 | 89 | \o 1.0 is the absolute right. |
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90 | 90 | \endlist |
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91 | 91 | Default value is 0.5 (center). |
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92 | 92 | \sa verticalPosition |
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93 | 93 | */ |
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94 | 94 | |
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95 | 95 | /*! |
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96 | 96 | \property QPieSeries::verticalPosition |
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97 | 97 | \brief Defines the vertical position of the pie. |
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98 | 98 | |
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99 | 99 | The value is a relative value to the chart rectangle where: |
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100 | 100 | |
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101 | 101 | \list |
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102 | 102 | \o 0.0 is the absolute top. |
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103 | 103 | \o 1.0 is the absolute bottom. |
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104 | 104 | \endlist |
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105 | 105 | Default value is 0.5 (center). |
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106 | 106 | \sa horizontalPosition |
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107 | 107 | */ |
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108 | 108 | |
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109 | 109 | /*! |
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110 | 110 | \qmlproperty real PieSeries::verticalPosition |
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111 | 111 | |
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112 | 112 | Defines the vertical position of the pie. |
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113 | 113 | |
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114 | 114 | The value is a relative value to the chart rectangle where: |
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115 | 115 | |
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116 | 116 | \list |
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117 | 117 | \o 0.0 is the absolute top. |
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118 | 118 | \o 1.0 is the absolute bottom. |
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119 | 119 | \endlist |
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120 | 120 | Default value is 0.5 (center). |
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121 | 121 | \sa horizontalPosition |
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122 | 122 | */ |
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123 | 123 | |
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124 | 124 | /*! |
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125 | 125 | \property QPieSeries::size |
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126 | 126 | \brief Defines the pie size. |
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127 | 127 | |
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128 | 128 | The value is a relative value to the chart rectangle where: |
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129 | 129 | |
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130 | 130 | \list |
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131 | 131 | \o 0.0 is the minimum size (pie not drawn). |
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132 | 132 | \o 1.0 is the maximum size that can fit the chart. |
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133 | 133 | \endlist |
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134 | 134 | |
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135 | 135 | When setting this property the holeSize property is adjusted if necessary, to ensure that the hole size is not greater than the outer size. |
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136 | 136 | |
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137 | 137 | Default value is 0.7. |
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138 | 138 | */ |
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139 | 139 | |
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140 | 140 | /*! |
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141 | 141 | \qmlproperty real PieSeries::size |
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142 | 142 | |
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143 | 143 | Defines the pie size. |
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144 | 144 | |
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145 | 145 | The value is a relative value to the chart rectangle where: |
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146 | 146 | |
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147 | 147 | \list |
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148 | 148 | \o 0.0 is the minimum size (pie not drawn). |
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149 | 149 | \o 1.0 is the maximum size that can fit the chart. |
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150 | 150 | \endlist |
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151 | 151 | |
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152 | 152 | Default value is 0.7. |
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153 | 153 | */ |
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154 | 154 | |
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155 | 155 | /*! |
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156 | 156 | \property QPieSeries::holeSize |
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157 | 157 | \brief Defines the donut hole size. |
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158 | 158 | |
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159 | 159 | The value is a relative value to the chart rectangle where: |
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160 | 160 | |
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161 | 161 | \list |
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162 | 162 | \o 0.0 is the minimum size (full pie drawn, without any hole inside). |
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163 | 163 | \o 1.0 is the maximum size that can fit the chart. (donut has no width) |
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164 | 164 | \endlist |
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165 | 165 | |
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166 | 166 | The value is never greater then size property. |
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167 | 167 | Default value is 0.0. |
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168 | 168 | */ |
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169 | 169 | |
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170 | 170 | /*! |
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171 | 171 | \qmlproperty real PieSeries::holeSize |
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172 | 172 | |
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173 | 173 | Defines the donut hole size. |
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174 | 174 | |
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175 | 175 | The value is a relative value to the chart rectangle where: |
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176 | 176 | |
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177 | 177 | \list |
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178 | 178 | \o 0.0 is the minimum size (full pie drawn, without any hole inside). |
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179 | 179 | \o 1.0 is the maximum size that can fit the chart. (donut has no width) |
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180 | 180 | \endlist |
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181 | 181 | |
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182 | 182 | When setting this property the size property is adjusted if necessary, to ensure that the inner size is not greater than the outer size. |
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183 | 183 | |
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184 | 184 | Default value is 0.0. |
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185 | 185 | */ |
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186 | 186 | |
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187 | 187 | /*! |
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188 | 188 | \property QPieSeries::startAngle |
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189 | 189 | \brief Defines the starting angle of the pie. |
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190 | 190 | |
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191 | 191 | Full pie is 360 degrees where 0 degrees is at 12 a'clock. |
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192 | 192 | |
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193 | 193 | Default is value is 0. |
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194 | 194 | */ |
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195 | 195 | |
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196 | 196 | /*! |
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197 | 197 | \qmlproperty real PieSeries::startAngle |
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198 | 198 | |
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199 | 199 | Defines the starting angle of the pie. |
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200 | 200 | |
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201 | 201 | Full pie is 360 degrees where 0 degrees is at 12 a'clock. |
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202 | 202 | |
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203 | 203 | Default is value is 0. |
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204 | 204 | */ |
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205 | 205 | |
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206 | 206 | /*! |
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207 | 207 | \property QPieSeries::endAngle |
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208 | 208 | \brief Defines the ending angle of the pie. |
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209 | 209 | |
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210 | 210 | Full pie is 360 degrees where 0 degrees is at 12 a'clock. |
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211 | 211 | |
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212 | 212 | Default is value is 360. |
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213 | 213 | */ |
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214 | 214 | |
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215 | 215 | /*! |
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216 | 216 | \qmlproperty real PieSeries::endAngle |
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217 | 217 | |
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218 | 218 | Defines the ending angle of the pie. |
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219 | 219 | |
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220 | 220 | Full pie is 360 degrees where 0 degrees is at 12 a'clock. |
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221 | 221 | |
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222 | 222 | Default is value is 360. |
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223 | 223 | */ |
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224 | 224 | |
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225 | 225 | /*! |
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226 | 226 | \property QPieSeries::count |
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227 | 227 | |
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228 | 228 | Number of slices in the series. |
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229 | 229 | */ |
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230 | 230 | |
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231 | 231 | /*! |
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232 | 232 | \qmlproperty int PieSeries::count |
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233 | 233 | |
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234 | 234 | Number of slices in the series. |
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235 | 235 | */ |
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236 | 236 | |
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237 | 237 | /*! |
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238 | 238 | \fn void QPieSeries::countChanged() |
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239 | 239 | Emitted when the slice count has changed. |
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240 | 240 | \sa count |
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241 | 241 | */ |
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242 | 242 | /*! |
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243 | 243 | \qmlsignal PieSeries::onCountChanged() |
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244 | 244 | Emitted when the slice count has changed. |
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245 | 245 | */ |
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246 | 246 | |
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247 | 247 | /*! |
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248 | 248 | \property QPieSeries::sum |
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249 | 249 | |
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250 | 250 | Sum of all slices. |
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251 | 251 | |
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252 | 252 | The series keeps track of the sum of all slices it holds. |
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253 | 253 | */ |
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254 | 254 | |
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255 | 255 | /*! |
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256 | 256 | \qmlproperty real PieSeries::sum |
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257 | 257 | |
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258 | 258 | Sum of all slices. |
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259 | 259 | |
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260 | 260 | The series keeps track of the sum of all slices it holds. |
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261 | 261 | */ |
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262 | 262 | |
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263 | 263 | /*! |
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264 | 264 | \fn void QPieSeries::sumChanged() |
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265 | 265 | Emitted when the sum of all slices has changed. |
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266 | 266 | \sa sum |
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267 | 267 | */ |
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268 | 268 | /*! |
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269 | 269 | \qmlsignal PieSeries::onSumChanged() |
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270 | 270 | Emitted when the sum of all slices has changed. This may happen for example if you add or remove slices, or if you |
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271 | 271 | change value of a slice. |
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272 | 272 | */ |
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273 | 273 | |
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274 | 274 | /*! |
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275 | 275 | \fn void QPieSeries::added(QList<QPieSlice*> slices) |
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276 | 276 | |
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277 | 277 | This signal is emitted when \a slices have been added to the series. |
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278 | 278 | |
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279 | 279 | \sa append(), insert() |
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280 | 280 | */ |
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281 | 281 | /*! |
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282 | 282 | \qmlsignal PieSeries::onAdded(PieSlice slice) |
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283 | 283 | Emitted when \a slice has been added to the series. |
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284 | 284 | */ |
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285 | 285 | |
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286 | 286 | /*! |
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287 | 287 | \fn void QPieSeries::removed(QList<QPieSlice*> slices) |
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288 | 288 | This signal is emitted when \a slices have been removed from the series. |
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289 | 289 | \sa remove() |
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290 | 290 | */ |
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291 | 291 | /*! |
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292 | 292 | \qmlsignal PieSeries::onRemoved(PieSlice slice) |
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293 | 293 | Emitted when \a slice has been removed from the series. |
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294 | 294 | */ |
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295 | 295 | |
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296 | 296 | /*! |
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297 | 297 | \fn void QPieSeries::clicked(QPieSlice* slice) |
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298 | 298 | This signal is emitted when a \a slice has been clicked. |
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299 | 299 | \sa QPieSlice::clicked() |
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300 | 300 | */ |
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301 | 301 | /*! |
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302 | 302 | \qmlsignal PieSeries::onClicked(PieSlice slice) |
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303 | 303 | This signal is emitted when a \a slice has been clicked. |
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304 | 304 | */ |
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305 | 305 | |
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306 | 306 | /*! |
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307 | 307 | \fn void QPieSeries::hovered(QPieSlice* slice, bool state) |
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308 | 308 | This signal is emitted when user has hovered over or away from the \a slice. |
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309 | 309 | \a state is true when user has hovered over the slice and false when hover has moved away from the slice. |
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310 | 310 | \sa QPieSlice::hovered() |
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311 | 311 | */ |
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312 | 312 | /*! |
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313 | 313 | \qmlsignal PieSeries::onHovered(PieSlice slice, bool state) |
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314 | 314 | This signal is emitted when user has hovered over or away from the \a slice. \a state is true when user has hovered |
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315 | 315 | over the slice and false when hover has moved away from the slice. |
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316 | 316 | */ |
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317 | 317 | |
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318 | 318 | /*! |
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319 | 319 | \qmlmethod PieSlice PieSeries::at(int index) |
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320 | 320 | Returns slice at \a index. Returns null if the index is not valid. |
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321 | 321 | */ |
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322 | 322 | |
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323 | 323 | /*! |
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324 | 324 | \qmlmethod PieSlice PieSeries::find(string label) |
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325 | 325 | Returns the first slice with \a label. Returns null if the index is not valid. |
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326 | 326 | */ |
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327 | 327 | |
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328 | 328 | /*! |
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329 | 329 | \qmlmethod PieSlice PieSeries::append(string label, real value) |
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330 | 330 | Adds a new slice with \a label and \a value to the pie. |
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331 | 331 | */ |
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332 | 332 | |
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333 | 333 | /*! |
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334 | 334 | \qmlmethod bool PieSeries::remove(PieSlice slice) |
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335 | 335 | Removes the \a slice from the pie. Returns true if the removal was successfull, false otherwise. |
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336 | 336 | */ |
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337 | 337 | |
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338 | 338 | /*! |
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339 | 339 | \qmlmethod PieSeries::clear() |
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340 | 340 | Removes all slices from the pie. |
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341 | 341 | */ |
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342 | 342 | |
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343 | 343 | /*! |
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344 | 344 | Constructs a series object which is a child of \a parent. |
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345 | 345 | */ |
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346 | 346 | QPieSeries::QPieSeries(QObject *parent) : |
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347 | 347 | QAbstractSeries(*new QPieSeriesPrivate(this),parent) |
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348 | 348 | { |
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349 | 349 | |
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350 | 350 | } |
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351 | 351 | |
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352 | 352 | /*! |
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353 | 353 | Destroys the series and its slices. |
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354 | 354 | */ |
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355 | 355 | QPieSeries::~QPieSeries() |
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356 | 356 | { |
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357 | 357 | // NOTE: d_prt destroyed by QObject |
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358 | 358 | } |
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359 | 359 | |
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360 | 360 | /*! |
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361 | 361 | Returns QChartSeries::SeriesTypePie. |
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362 | 362 | */ |
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363 | 363 | QAbstractSeries::SeriesType QPieSeries::type() const |
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364 | 364 | { |
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365 | 365 | return QAbstractSeries::SeriesTypePie; |
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366 | 366 | } |
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367 | 367 | |
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368 | 368 | /*! |
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369 | 369 | Appends a single \a slice to the series. |
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370 | 370 | Slice ownership is passed to the series. |
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371 | 371 | |
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372 | 372 | Returns true if append was succesfull. |
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373 | 373 | */ |
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374 | 374 | bool QPieSeries::append(QPieSlice* slice) |
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375 | 375 | { |
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376 | 376 | return append(QList<QPieSlice*>() << slice); |
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377 | 377 | } |
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378 | 378 | |
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379 | 379 | /*! |
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380 | 380 | Appends an array of \a slices to the series. |
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381 | 381 | Slice ownership is passed to the series. |
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382 | 382 | |
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383 | 383 | Returns true if append was successfull. |
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384 | 384 | */ |
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385 | 385 | bool QPieSeries::append(QList<QPieSlice*> slices) |
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386 | 386 | { |
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387 | 387 | Q_D(QPieSeries); |
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388 | 388 | |
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389 | 389 | if (slices.count() == 0) |
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390 | 390 | return false; |
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391 | 391 | |
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392 | 392 | foreach (QPieSlice* s, slices) { |
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393 | 393 | if (!s || d->m_slices.contains(s)) |
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394 | 394 | return false; |
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395 | 395 | if (s->series()) // already added to some series |
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396 | 396 | return false; |
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397 | 397 | } |
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398 | 398 | |
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399 | 399 | foreach (QPieSlice* s, slices) { |
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400 | 400 | s->setParent(this); |
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401 | 401 | QPieSlicePrivate::fromSlice(s)->m_series = this; |
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402 | 402 | d->m_slices << s; |
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403 | 403 | } |
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404 | 404 | |
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405 | 405 | d->updateDerivativeData(); |
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406 | 406 | |
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407 | 407 | foreach (QPieSlice* s, slices) { |
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408 | 408 | connect(s, SIGNAL(valueChanged()), d, SLOT(sliceValueChanged())); |
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409 | 409 | connect(s, SIGNAL(clicked()), d, SLOT(sliceClicked())); |
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410 | 410 | connect(s, SIGNAL(hovered(bool)), d, SLOT(sliceHovered(bool))); |
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411 | 411 | } |
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412 | 412 | |
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413 | 413 | emit added(slices); |
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414 | 414 | emit countChanged(); |
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415 | 415 | |
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416 | 416 | return true; |
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417 | 417 | } |
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418 | 418 | |
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419 | 419 | /*! |
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420 | 420 | Appends a single \a slice to the series and returns a reference to the series. |
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421 | 421 | Slice ownership is passed to the series. |
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422 | 422 | */ |
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423 | 423 | QPieSeries& QPieSeries::operator << (QPieSlice* slice) |
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424 | 424 | { |
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425 | 425 | append(slice); |
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426 | 426 | return *this; |
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427 | 427 | } |
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428 | 428 | |
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429 | 429 | |
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430 | 430 | /*! |
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431 | 431 | Appends a single slice to the series with give \a value and \a label. |
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432 | 432 | Slice ownership is passed to the series. |
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433 | 433 | */ |
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434 | 434 | QPieSlice* QPieSeries::append(QString label, qreal value) |
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435 | 435 | { |
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436 | 436 | QPieSlice* slice = new QPieSlice(label, value); |
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437 | 437 | append(slice); |
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438 | 438 | return slice; |
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439 | 439 | } |
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440 | 440 | |
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441 | 441 | /*! |
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442 | 442 | Inserts a single \a slice to the series before the slice at \a index position. |
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443 | 443 | Slice ownership is passed to the series. |
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444 | 444 | |
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445 | 445 | Returns true if insert was successfull. |
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446 | 446 | */ |
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447 | 447 | bool QPieSeries::insert(int index, QPieSlice* slice) |
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448 | 448 | { |
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449 | 449 | Q_D(QPieSeries); |
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450 | 450 | |
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451 | 451 | if (index < 0 || index > d->m_slices.count()) |
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452 | 452 | return false; |
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453 | 453 | |
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454 | 454 | if (!slice || d->m_slices.contains(slice)) |
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455 | 455 | return false; |
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456 | 456 | |
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457 | 457 | if (slice->series()) // already added to some series |
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458 | 458 | return false; |
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459 | 459 | |
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460 | 460 | slice->setParent(this); |
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461 | 461 | QPieSlicePrivate::fromSlice(slice)->m_series = this; |
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462 | 462 | d->m_slices.insert(index, slice); |
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463 | 463 | |
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464 | 464 | d->updateDerivativeData(); |
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465 | 465 | |
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466 | 466 | connect(slice, SIGNAL(valueChanged()), d, SLOT(sliceValueChanged())); |
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467 | 467 | connect(slice, SIGNAL(clicked()), d, SLOT(sliceClicked())); |
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468 | 468 | connect(slice, SIGNAL(hovered(bool)), d, SLOT(sliceHovered(bool))); |
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469 | 469 | |
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470 | 470 | emit added(QList<QPieSlice*>() << slice); |
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471 | 471 | emit countChanged(); |
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472 | 472 | |
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473 | 473 | return true; |
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474 | 474 | } |
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475 | 475 | |
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476 | 476 | /*! |
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477 | 477 | Removes a single \a slice from the series and deletes the slice. |
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478 | 478 | |
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479 | 479 | Do not reference the pointer after this call. |
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480 | 480 | |
|
481 | 481 | Returns true if remove was successfull. |
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482 | 482 | */ |
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483 | 483 | bool QPieSeries::remove(QPieSlice* slice) |
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484 | 484 | { |
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485 | 485 | Q_D(QPieSeries); |
|
486 | 486 | |
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487 | 487 | if (!d->m_slices.removeOne(slice)) |
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488 | 488 | return false; |
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489 | 489 | |
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490 | 490 | d->updateDerivativeData(); |
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491 | 491 | |
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492 | 492 | emit removed(QList<QPieSlice*>() << slice); |
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493 | 493 | emit countChanged(); |
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494 | 494 | |
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495 | 495 | delete slice; |
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496 | 496 | slice = 0; |
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497 | 497 | |
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498 | 498 | return true; |
|
499 | 499 | } |
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500 | 500 | |
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501 | 501 | /*! |
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502 | 502 | Takes a single \a slice from the series. Does not destroy the slice object. |
|
503 | 503 | |
|
504 | 504 | NOTE: The series remains as the slice's parent object. You must set the |
|
505 | 505 | parent object to take full ownership. |
|
506 | 506 | |
|
507 | 507 | Returns true if take was successfull. |
|
508 | 508 | */ |
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509 | 509 | bool QPieSeries::take(QPieSlice* slice) |
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510 | 510 | { |
|
511 | 511 | Q_D(QPieSeries); |
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512 | 512 | |
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513 | 513 | if (!d->m_slices.removeOne(slice)) |
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514 | 514 | return false; |
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515 | 515 | |
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516 | 516 | QPieSlicePrivate::fromSlice(slice)->m_series = 0; |
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517 | 517 | |
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518 | 518 | d->updateDerivativeData(); |
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519 | 519 | |
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520 | 520 | emit removed(QList<QPieSlice*>() << slice); |
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521 | 521 | emit countChanged(); |
|
522 | 522 | |
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523 | 523 | return true; |
|
524 | 524 | } |
|
525 | 525 | |
|
526 | 526 | /*! |
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527 | 527 | Clears all slices from the series. |
|
528 | 528 | */ |
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529 | 529 | void QPieSeries::clear() |
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530 | 530 | { |
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531 | 531 | Q_D(QPieSeries); |
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532 | 532 | if (d->m_slices.count() == 0) |
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533 | 533 | return; |
|
534 | 534 | |
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535 | 535 | QList<QPieSlice*> slices = d->m_slices; |
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536 | 536 | foreach (QPieSlice* s, d->m_slices) { |
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537 | 537 | d->m_slices.removeOne(s); |
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538 | 538 | delete s; |
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539 | 539 | } |
|
540 | 540 | |
|
541 | 541 | d->updateDerivativeData(); |
|
542 | 542 | |
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543 | 543 | emit removed(slices); |
|
544 | 544 | emit countChanged(); |
|
545 | 545 | } |
|
546 | 546 | |
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547 | 547 | /*! |
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548 | 548 | Returns a list of slices that belong to this series. |
|
549 | 549 | */ |
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550 | 550 | QList<QPieSlice*> QPieSeries::slices() const |
|
551 | 551 | { |
|
552 | 552 | Q_D(const QPieSeries); |
|
553 | 553 | return d->m_slices; |
|
554 | 554 | } |
|
555 | 555 | |
|
556 | 556 | /*! |
|
557 | 557 | returns the number of the slices in this series. |
|
558 | 558 | */ |
|
559 | 559 | int QPieSeries::count() const |
|
560 | 560 | { |
|
561 | 561 | Q_D(const QPieSeries); |
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562 | 562 | return d->m_slices.count(); |
|
563 | 563 | } |
|
564 | 564 | |
|
565 | 565 | /*! |
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566 | 566 | Returns true is the series is empty. |
|
567 | 567 | */ |
|
568 | 568 | bool QPieSeries::isEmpty() const |
|
569 | 569 | { |
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570 | 570 | Q_D(const QPieSeries); |
|
571 | 571 | return d->m_slices.isEmpty(); |
|
572 | 572 | } |
|
573 | 573 | |
|
574 | 574 | /*! |
|
575 | 575 | Returns the sum of all slice values in this series. |
|
576 | 576 | |
|
577 | 577 | \sa QPieSlice::value(), QPieSlice::setValue(), QPieSlice::percentage() |
|
578 | 578 | */ |
|
579 | 579 | qreal QPieSeries::sum() const |
|
580 | 580 | { |
|
581 | 581 | Q_D(const QPieSeries); |
|
582 | 582 | return d->m_sum; |
|
583 | 583 | } |
|
584 | 584 | |
|
585 | 585 | void QPieSeries::setHoleSize(qreal holeSize) |
|
586 | 586 | { |
|
587 | 587 | Q_D(QPieSeries); |
|
588 | 588 | holeSize = qBound((qreal)0.0, holeSize, (qreal)1.0); |
|
589 | 589 | d->setSizes(holeSize, qMax(d->m_pieRelativeSize, holeSize)); |
|
590 | 590 | } |
|
591 | 591 | |
|
592 | 592 | qreal QPieSeries::holeSize() const |
|
593 | 593 | { |
|
594 | 594 | Q_D(const QPieSeries); |
|
595 | 595 | return d->m_holeRelativeSize; |
|
596 | 596 | } |
|
597 | 597 | |
|
598 | 598 | void QPieSeries::setHorizontalPosition(qreal relativePosition) |
|
599 | 599 | { |
|
600 | 600 | Q_D(QPieSeries); |
|
601 | 601 | |
|
602 | 602 | if (relativePosition < 0.0) |
|
603 | 603 | relativePosition = 0.0; |
|
604 | 604 | if (relativePosition > 1.0) |
|
605 | 605 | relativePosition = 1.0; |
|
606 | 606 | |
|
607 | 607 | if (!qFuzzyIsNull(d->m_pieRelativeHorPos - relativePosition)) { |
|
608 | 608 | d->m_pieRelativeHorPos = relativePosition; |
|
609 | 609 | emit d->horizontalPositionChanged(); |
|
610 | 610 | } |
|
611 | 611 | } |
|
612 | 612 | |
|
613 | 613 | qreal QPieSeries::horizontalPosition() const |
|
614 | 614 | { |
|
615 | 615 | Q_D(const QPieSeries); |
|
616 | 616 | return d->m_pieRelativeHorPos; |
|
617 | 617 | } |
|
618 | 618 | |
|
619 | 619 | void QPieSeries::setVerticalPosition(qreal relativePosition) |
|
620 | 620 | { |
|
621 | 621 | Q_D(QPieSeries); |
|
622 | 622 | |
|
623 | 623 | if (relativePosition < 0.0) |
|
624 | 624 | relativePosition = 0.0; |
|
625 | 625 | if (relativePosition > 1.0) |
|
626 | 626 | relativePosition = 1.0; |
|
627 | 627 | |
|
628 | 628 | if (!qFuzzyIsNull(d->m_pieRelativeVerPos - relativePosition)) { |
|
629 | 629 | d->m_pieRelativeVerPos = relativePosition; |
|
630 | 630 | emit d->verticalPositionChanged(); |
|
631 | 631 | } |
|
632 | 632 | } |
|
633 | 633 | |
|
634 | 634 | qreal QPieSeries::verticalPosition() const |
|
635 | 635 | { |
|
636 | 636 | Q_D(const QPieSeries); |
|
637 | 637 | return d->m_pieRelativeVerPos; |
|
638 | 638 | } |
|
639 | 639 | |
|
640 | 640 | void QPieSeries::setPieSize(qreal relativeSize) |
|
641 | 641 | { |
|
642 | 642 | Q_D(QPieSeries); |
|
643 | 643 | relativeSize = qBound((qreal)0.0, relativeSize, (qreal)1.0); |
|
644 | 644 | d->setSizes(qMin(d->m_holeRelativeSize, relativeSize), relativeSize); |
|
645 | 645 | |
|
646 | 646 | } |
|
647 | 647 | |
|
648 | 648 | qreal QPieSeries::pieSize() const |
|
649 | 649 | { |
|
650 | 650 | Q_D(const QPieSeries); |
|
651 | 651 | return d->m_pieRelativeSize; |
|
652 | 652 | } |
|
653 | 653 | |
|
654 | 654 | |
|
655 | 655 | void QPieSeries::setPieStartAngle(qreal angle) |
|
656 | 656 | { |
|
657 | 657 | Q_D(QPieSeries); |
|
658 | 658 | if (qFuzzyIsNull(d->m_pieStartAngle - angle)) |
|
659 | 659 | return; |
|
660 | 660 | d->m_pieStartAngle = angle; |
|
661 | 661 | d->updateDerivativeData(); |
|
662 | 662 | emit d->pieStartAngleChanged(); |
|
663 | 663 | } |
|
664 | 664 | |
|
665 | 665 | qreal QPieSeries::pieStartAngle() const |
|
666 | 666 | { |
|
667 | 667 | Q_D(const QPieSeries); |
|
668 | 668 | return d->m_pieStartAngle; |
|
669 | 669 | } |
|
670 | 670 | |
|
671 | 671 | /*! |
|
672 | 672 | Sets the end angle of the pie. |
|
673 | 673 | |
|
674 | 674 | Full pie is 360 degrees where 0 degrees is at 12 a'clock. |
|
675 | 675 | |
|
676 | 676 | \a angle must be greater than start angle. |
|
677 | 677 | |
|
678 | 678 | \sa pieEndAngle(), pieStartAngle(), setPieStartAngle() |
|
679 | 679 | */ |
|
680 | 680 | void QPieSeries::setPieEndAngle(qreal angle) |
|
681 | 681 | { |
|
682 | 682 | Q_D(QPieSeries); |
|
683 | 683 | if (qFuzzyIsNull(d->m_pieEndAngle - angle)) |
|
684 | 684 | return; |
|
685 | 685 | d->m_pieEndAngle = angle; |
|
686 | 686 | d->updateDerivativeData(); |
|
687 | 687 | emit d->pieEndAngleChanged(); |
|
688 | 688 | } |
|
689 | 689 | |
|
690 | 690 | /*! |
|
691 | 691 | Returns the end angle of the pie. |
|
692 | 692 | |
|
693 | 693 | Full pie is 360 degrees where 0 degrees is at 12 a'clock. |
|
694 | 694 | |
|
695 | 695 | \sa setPieEndAngle(), pieStartAngle(), setPieStartAngle() |
|
696 | 696 | */ |
|
697 | 697 | qreal QPieSeries::pieEndAngle() const |
|
698 | 698 | { |
|
699 | 699 | Q_D(const QPieSeries); |
|
700 | 700 | return d->m_pieEndAngle; |
|
701 | 701 | } |
|
702 | 702 | |
|
703 | 703 | /*! |
|
704 | 704 | Sets the all the slice labels \a visible or invisible. |
|
705 | 705 | |
|
706 | 706 | Note that this affects only the current slices in the series. |
|
707 | 707 | If user adds a new slice the default label visibility is false. |
|
708 | 708 | |
|
709 | 709 | \sa QPieSlice::isLabelVisible(), QPieSlice::setLabelVisible() |
|
710 | 710 | */ |
|
711 | 711 | void QPieSeries::setLabelsVisible(bool visible) |
|
712 | 712 | { |
|
713 | 713 | Q_D(QPieSeries); |
|
714 | 714 | foreach (QPieSlice* s, d->m_slices) |
|
715 | 715 | s->setLabelVisible(visible); |
|
716 | 716 | } |
|
717 | 717 | |
|
718 | 718 | /*! |
|
719 | 719 | Sets the all the slice labels \a position |
|
720 | 720 | |
|
721 | 721 | Note that this affects only the current slices in the series. |
|
722 | 722 | If user adds a new slice the default label position is LabelOutside |
|
723 | 723 | |
|
724 | 724 | \sa QPieSlice::labelPosition(), QPieSlice::setLabelPosition() |
|
725 | 725 | */ |
|
726 | 726 | void QPieSeries::setLabelsPosition(QPieSlice::LabelPosition position) |
|
727 | 727 | { |
|
728 | 728 | Q_D(QPieSeries); |
|
729 | 729 | foreach (QPieSlice* s, d->m_slices) |
|
730 | 730 | s->setLabelPosition(position); |
|
731 | 731 | } |
|
732 | 732 | |
|
733 | 733 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
|
734 | 734 | |
|
735 | 735 | |
|
736 | 736 | QPieSeriesPrivate::QPieSeriesPrivate(QPieSeries *parent) : |
|
737 | 737 | QAbstractSeriesPrivate(parent), |
|
738 | 738 | m_pieRelativeHorPos(0.5), |
|
739 | 739 | m_pieRelativeVerPos(0.5), |
|
740 | 740 | m_pieRelativeSize(0.7), |
|
741 | 741 | m_pieStartAngle(0), |
|
742 | 742 | m_pieEndAngle(360), |
|
743 | 743 | m_sum(0), |
|
744 | // m_donutChart(false), | |
|
745 | 744 | m_holeRelativeSize(0.0) |
|
746 | 745 | { |
|
747 | 746 | } |
|
748 | 747 | |
|
749 | 748 | QPieSeriesPrivate::~QPieSeriesPrivate() |
|
750 | 749 | { |
|
751 | 750 | } |
|
752 | 751 | |
|
753 | 752 | void QPieSeriesPrivate::updateDerivativeData() |
|
754 | 753 | { |
|
755 | 754 | // calculate sum of all slices |
|
756 | 755 | qreal sum = 0; |
|
757 | 756 | foreach (QPieSlice* s, m_slices) |
|
758 | 757 | sum += s->value(); |
|
759 | 758 | |
|
760 | 759 | if (!qFuzzyIsNull(m_sum - sum)) { |
|
761 | 760 | m_sum = sum; |
|
762 | 761 | emit q_func()->sumChanged(); |
|
763 | 762 | } |
|
764 | 763 | |
|
765 | 764 | // nothing to show.. |
|
766 | 765 | if (qFuzzyIsNull(m_sum)) |
|
767 | 766 | return; |
|
768 | 767 | |
|
769 | 768 | // update slice attributes |
|
770 | 769 | qreal sliceAngle = m_pieStartAngle; |
|
771 | 770 | qreal pieSpan = m_pieEndAngle - m_pieStartAngle; |
|
772 | 771 | QVector<QPieSlice*> changed; |
|
773 | 772 | foreach (QPieSlice* s, m_slices) { |
|
774 | 773 | QPieSlicePrivate *d = QPieSlicePrivate::fromSlice(s); |
|
775 | 774 | d->setPercentage(s->value() / m_sum); |
|
776 | 775 | d->setStartAngle(sliceAngle); |
|
777 | 776 | d->setAngleSpan(pieSpan * s->percentage()); |
|
778 | 777 | sliceAngle += s->angleSpan(); |
|
779 | 778 | } |
|
780 | 779 | |
|
781 | 780 | |
|
782 | 781 | emit calculatedDataChanged(); |
|
783 | 782 | } |
|
784 | 783 | |
|
785 | 784 | void QPieSeriesPrivate::setSizes(qreal innerSize, qreal outerSize) |
|
786 | 785 | { |
|
787 | 786 | bool changed = false; |
|
788 | 787 | |
|
789 | 788 | if (!qFuzzyIsNull(m_holeRelativeSize - innerSize)) { |
|
790 | 789 | m_holeRelativeSize = innerSize; |
|
791 | 790 | changed = true; |
|
792 | 791 | } |
|
793 | 792 | |
|
794 | 793 | if (!qFuzzyIsNull(m_pieRelativeSize - outerSize)) { |
|
795 | 794 | m_pieRelativeSize = outerSize; |
|
796 | 795 | changed = true; |
|
797 | 796 | } |
|
798 | 797 | |
|
799 | 798 | if (changed) |
|
800 | 799 | emit pieSizeChanged(); |
|
801 | 800 | } |
|
802 | 801 | |
|
803 | 802 | QPieSeriesPrivate* QPieSeriesPrivate::fromSeries(QPieSeries *series) |
|
804 | 803 | { |
|
805 | 804 | return series->d_func(); |
|
806 | 805 | } |
|
807 | 806 | |
|
808 | 807 | void QPieSeriesPrivate::sliceValueChanged() |
|
809 | 808 | { |
|
810 | 809 | Q_ASSERT(m_slices.contains(qobject_cast<QPieSlice *>(sender()))); |
|
811 | 810 | updateDerivativeData(); |
|
812 | 811 | } |
|
813 | 812 | |
|
814 | 813 | void QPieSeriesPrivate::sliceClicked() |
|
815 | 814 | { |
|
816 | 815 | QPieSlice* slice = qobject_cast<QPieSlice *>(sender()); |
|
817 | 816 | Q_ASSERT(m_slices.contains(slice)); |
|
818 | 817 | Q_Q(QPieSeries); |
|
819 | 818 | emit q->clicked(slice); |
|
820 | 819 | } |
|
821 | 820 | |
|
822 | 821 | void QPieSeriesPrivate::sliceHovered(bool state) |
|
823 | 822 | { |
|
824 | 823 | QPieSlice* slice = qobject_cast<QPieSlice *>(sender()); |
|
825 | 824 | Q_ASSERT(m_slices.contains(slice)); |
|
826 | 825 | Q_Q(QPieSeries); |
|
827 | 826 | emit q->hovered(slice, state); |
|
828 | 827 | } |
|
829 | 828 | |
|
830 | 829 | void QPieSeriesPrivate::scaleDomain(Domain& domain) |
|
831 | 830 | { |
|
832 | 831 | Q_UNUSED(domain); |
|
833 | 832 | // does not apply to pie |
|
834 | 833 | } |
|
835 | 834 | |
|
836 | 835 | ChartElement* QPieSeriesPrivate::createGraphics(ChartPresenter* presenter) |
|
837 | 836 | { |
|
838 | 837 | Q_Q(QPieSeries); |
|
839 | 838 | PieChartItem* pie = new PieChartItem(q,presenter); |
|
840 | 839 | if(presenter->animationOptions().testFlag(QChart::SeriesAnimations)) { |
|
841 | 840 | pie->setAnimation(new PieAnimation(pie)); |
|
842 | 841 | } |
|
843 | 842 | presenter->chartTheme()->decorate(q, presenter->dataSet()->seriesIndex(q)); |
|
844 | 843 | return pie; |
|
845 | 844 | } |
|
846 | 845 | |
|
847 | 846 | QList<LegendMarker*> QPieSeriesPrivate::createLegendMarker(QLegend* legend) |
|
848 | 847 | { |
|
849 | 848 | Q_Q(QPieSeries); |
|
850 | 849 | QList<LegendMarker*> markers; |
|
851 | 850 | foreach(QPieSlice* slice, q->slices()) { |
|
852 | 851 | PieLegendMarker* marker = new PieLegendMarker(q,slice,legend); |
|
853 | 852 | markers << marker; |
|
854 | 853 | } |
|
855 | 854 | return markers; |
|
856 | 855 | } |
|
857 | 856 | |
|
858 | 857 | void QPieSeriesPrivate::initializeAxis(QAbstractAxis* axis) |
|
859 | 858 | { |
|
860 | 859 | Q_UNUSED(axis); |
|
861 | 860 | } |
|
862 | 861 | |
|
863 | 862 | QAbstractAxis::AxisType QPieSeriesPrivate::defaultAxisType(Qt::Orientation orientation) const |
|
864 | 863 | { |
|
865 | 864 | Q_UNUSED(orientation); |
|
866 | 865 | return QAbstractAxis::AxisTypeNoAxis; |
|
867 | 866 | } |
|
868 | 867 | |
|
869 | 868 | #include "moc_qpieseries.cpp" |
|
870 | 869 | #include "moc_qpieseries_p.cpp" |
|
871 | 870 | |
|
872 | 871 | QTCOMMERCIALCHART_END_NAMESPACE |
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