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Commented out the extra space code for axis
Marek Rosa -
r2094:12a56d69a00f
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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 "chartlayout_p.h"
22 22 #include "chartpresenter_p.h"
23 23 #include "qlegend_p.h"
24 24 #include "chartaxis_p.h"
25 25 #include "charttitle_p.h"
26 26 #include "chartbackground_p.h"
27 27 #include "legendmarker_p.h"
28 28
29 29 QTCOMMERCIALCHART_BEGIN_NAMESPACE
30 30
31 31 static const qreal golden_ratio = 0.25;
32 32
33 33 ChartLayout::ChartLayout(ChartPresenter* presenter):
34 34 m_presenter(presenter),
35 35 m_margins(20,20,20,20),
36 36 m_minChartRect(0,0,200,200)
37 37 {
38 38
39 39 }
40 40
41 41 ChartLayout::~ChartLayout()
42 42 {
43 43
44 44 }
45 45
46 46 void ChartLayout::setGeometry(const QRectF& rect)
47 47 {
48 48 if (!rect.isValid())
49 49 return;
50 50
51 51 QList<ChartAxis*> axes = m_presenter->axisItems();
52 52 ChartTitle* title = m_presenter->titleElement();
53 53 QLegend* legend = m_presenter->legend();
54 54 ChartBackground* background = m_presenter->backgroundElement();
55 55
56 56 QRectF contentGeometry = calculateBackgroundGeometry(rect,background);
57 57
58 58 contentGeometry = calculateContentGeometry(contentGeometry);
59 59
60 60 if (title && title->isVisible()) {
61 61 contentGeometry = calculateTitleGeometry(contentGeometry,title);
62 62 }
63 63
64 64 if (legend->isAttachedToChart() && legend->isVisible()) {
65 65 contentGeometry = calculateLegendGeometry(contentGeometry,legend);
66 66 }
67 67
68 68 calculateChartGeometry(contentGeometry,axes);
69 69
70 70 //TODO remove me
71 71 #ifdef SHOW_LAYOUT
72 72 LayoutDebuger* debuger = LayoutDebuger::instance();
73 73 debuger->reset();
74 74 debuger->setPen(QPen(Qt::red));
75 75 debuger->add(backgroundGeometry,m_presenter->rootItem());
76 76 debuger->add(titleGeometry,m_presenter->rootItem());
77 77 debuger->add(legendGeometry ,m_presenter->rootItem());
78 78 debuger->add(axisGeometry ,m_presenter->rootItem());
79 79 debuger->add(geometry,m_presenter->rootItem());
80 80 foreach(LegendMarker* marker,legend->d_ptr->markers()){
81 81 debuger->add(marker->mapRectToScene(marker->boundingRect()),m_presenter->rootItem());
82 82 }
83 83 #endif
84 84
85 85 QGraphicsLayout::setGeometry(rect);
86 86 }
87 87
88 88 QRectF ChartLayout::calculateContentGeometry(const QRectF& geometry) const
89 89 {
90 90 return geometry.adjusted(m_margins.left(),m_margins.top(),-m_margins.right(),-m_margins.bottom());
91 91 }
92 92
93 93 QRectF ChartLayout::calculateContentMinimum(const QRectF& minimum) const
94 94 {
95 95 return minimum.adjusted(0,0,m_margins.left()+m_margins.right(),m_margins.top() + m_margins.bottom());
96 96 }
97 97
98 98
99 99 QRectF ChartLayout::calculateBackgroundGeometry(const QRectF& geometry,ChartBackground* background) const
100 100 {
101 101 qreal left, top, right, bottom;
102 102 getContentsMargins(&left, &top, &right, &bottom);
103 103 QRectF backgroundGeometry = geometry.adjusted(left,top,-right,-bottom);
104 104 if(background) background->setRect(backgroundGeometry);
105 105 return backgroundGeometry;
106 106 }
107 107
108 108 QRectF ChartLayout::calculateBackgroundMinimum(const QRectF& minimum) const
109 109 {
110 110 qreal left, top, right, bottom;
111 111 getContentsMargins(&left, &top, &right, &bottom);
112 112 return minimum.adjusted(0,0,left + right,top+bottom);
113 113 }
114 114
115 115 QRectF ChartLayout::calculateChartGeometry(const QRectF& geometry, const QList<ChartAxis*>& axes) const
116 116 {
117 117
118 118 QSizeF vertical(0,0);
119 119 QSizeF horizontal(0,0);
120 120
121 121 int topAxisCount = 0;
122 122 int bottomAxisCount = 0;
123 123 int leftAxisCount = 0;
124 124 int rightAxisCount = 0;
125 125
126 126 // check axis size
127 127 foreach(ChartAxis* axis , axes) {
128 128 if(axis->orientation()==Qt::Vertical && axis->isVisible()) {
129 vertical = vertical.expandedTo(axis->effectiveSizeHint(Qt::MinimumSize));
129 // vertical = vertical.expandedTo(axis->effectiveSizeHint(Qt::MinimumSize));
130 130 if (axis->alternativePlacement())
131 131 rightAxisCount++;
132 132 else
133 133 leftAxisCount++;
134 134 }
135 135 else if(axis->orientation()==Qt::Horizontal && axis->isVisible()) {
136 horizontal = horizontal.expandedTo(axis->effectiveSizeHint(Qt::MinimumSize));
136 // horizontal = horizontal.expandedTo(axis->effectiveSizeHint(Qt::MinimumSize));
137 137 if (axis->alternativePlacement())
138 138 topAxisCount++;
139 139 else
140 140 bottomAxisCount++;
141 141 }
142 142
143 143 }
144 144
145 145 qreal width = qMin(vertical.width(),geometry.width() * golden_ratio);
146 146
147 147 QRectF rect = geometry.adjusted(width,vertical.height()/2,-horizontal.width()/2,-horizontal.height());
148 148
149 149 // axis area width
150 150 // TODO: replase with dynamic size code
151 151 int axisWidth = 35;
152 152
153 153 // get the final size of the plot rect
154 154 rect.adjust(leftAxisCount * axisWidth, topAxisCount * axisWidth, -rightAxisCount * axisWidth, -bottomAxisCount * axisWidth);
155 155 m_presenter->setChartsGeometry(rect);
156 156
157 157 leftAxisCount = 0;
158 158 rightAxisCount = 0;
159 159 bottomAxisCount = 0;
160 160 topAxisCount = 0;
161 161
162 162 // adjust the axes internal and external rects
163 163 foreach(ChartAxis* axis , axes) {
164 164 if(axis->orientation()==Qt::Vertical) {
165 165 axis->setInternalRect(rect.adjusted(-leftAxisCount * axisWidth, 0, rightAxisCount * axisWidth, 0));
166 166 axis->setGeometry(rect.adjusted(-(leftAxisCount + 1) * axisWidth, 0, (rightAxisCount + 1) * axisWidth, 0));
167 167 if (axis->alternativePlacement())
168 168 rightAxisCount++;
169 169 else
170 170 leftAxisCount++;
171 171 }
172 172 else if(axis->orientation()==Qt::Horizontal) {
173 173 axis->setInternalRect(rect.adjusted(0, -topAxisCount * axisWidth, 0, bottomAxisCount * axisWidth));
174 174 axis->setGeometry(rect.adjusted(0, -(topAxisCount + 1) * axisWidth, 0, (bottomAxisCount + 1) * axisWidth));
175 175 if (axis->alternativePlacement())
176 176 topAxisCount++;
177 177 else
178 178 bottomAxisCount++;
179 179 }
180 180 }
181 181
182 182 return rect;
183 183 }
184 184
185 185 QRectF ChartLayout::calculateAxisMinimum(const QRectF& minimum, const QList<ChartAxis*>& axes) const
186 186 {
187 187 QSizeF vertical(0,0);
188 188 QSizeF horizontal(0,0);
189 189
190 190 // check axis size
191 191 foreach(ChartAxis* axis , axes) {
192 192 if(axis->orientation()==Qt::Vertical && axis->isVisible()){
193 193 vertical = vertical.expandedTo(axis->effectiveSizeHint(Qt::MinimumSize));
194 194 }else if(axis->orientation()==Qt::Horizontal && axis->isVisible()) {
195 195 horizontal = horizontal.expandedTo(axis->effectiveSizeHint(Qt::MinimumSize));
196 196 }
197 197 }
198 198 return minimum.adjusted(0,0,horizontal.width()+vertical.width(),horizontal.height() + vertical.height());
199 199 }
200 200
201 201 QRectF ChartLayout::calculateLegendGeometry(const QRectF& geometry,QLegend* legend) const
202 202 {
203 203 QSizeF size = legend->effectiveSizeHint(Qt::PreferredSize,QSizeF(-1,-1));
204 204 QRectF legendRect;
205 205 QRectF result;
206 206
207 207 switch (legend->alignment()) {
208 208 case Qt::AlignTop: {
209 209 legendRect = QRectF(geometry.topLeft(),QSizeF(geometry.width(),size.height()));
210 210 result = geometry.adjusted(0,legendRect.height(),0,0);
211 211 break;
212 212 }
213 213 case Qt::AlignBottom: {
214 214 legendRect = QRectF(QPointF(geometry.left(),geometry.bottom()-size.height()),QSizeF(geometry.width(),size.height()));
215 215 result = geometry.adjusted(0,0,0,-legendRect.height());
216 216 break;
217 217 }
218 218 case Qt::AlignLeft: {
219 219 qreal width = qMin(size.width(),geometry.width()*golden_ratio);
220 220 legendRect = QRectF(geometry.topLeft(),QSizeF(width,geometry.height()));
221 221 result = geometry.adjusted(width,0,0,0);
222 222 break;
223 223 }
224 224 case Qt::AlignRight: {
225 225 qreal width = qMin(size.width(),geometry.width()*golden_ratio);
226 226 legendRect = QRectF(QPointF(geometry.right()-width,geometry.top()),QSizeF(width,geometry.height()));
227 227 result = geometry.adjusted(0,0,-width,0);
228 228 break;
229 229 }
230 230 default: {
231 231 legendRect = QRectF(0,0,0,0);
232 232 result = geometry;
233 233 break;
234 234 }
235 235 }
236 236
237 237 legend->setGeometry(legendRect);
238 238
239 239 return result;
240 240 }
241 241
242 242 QRectF ChartLayout::calculateLegendMinimum(const QRectF& geometry,QLegend* legend) const
243 243 {
244 244 QSizeF minSize = legend->effectiveSizeHint(Qt::MinimumSize,QSizeF(-1,-1));
245 245 return geometry.adjusted(0,0,minSize.width(),minSize.height());
246 246 }
247 247
248 248 QRectF ChartLayout::calculateTitleGeometry(const QRectF& geometry,ChartTitle* title) const
249 249 {
250 250 title->setGeometry(geometry);
251 251 QPointF center = geometry.center() - title->boundingRect().center();
252 252 title->setPos(center.x(),title->pos().y());
253 253 return geometry.adjusted(0,title->boundingRect().height(),0,0);
254 254 }
255 255
256 256 QRectF ChartLayout::calculateTitleMinimum(const QRectF& minimum,ChartTitle* title) const
257 257 {
258 258 QSizeF min = title->sizeHint(Qt::MinimumSize);
259 259 return minimum.adjusted(0,0,min.width(),min.height());
260 260 }
261 261
262 262 QSizeF ChartLayout::sizeHint ( Qt::SizeHint which, const QSizeF & constraint) const
263 263 {
264 264 Q_UNUSED(constraint);
265 265 if(which == Qt::MinimumSize){
266 266 QList<ChartAxis*> axes = m_presenter->axisItems();
267 267 ChartTitle* title = m_presenter->titleElement();
268 268 QLegend* legend = m_presenter->legend();
269 269 QRectF minimumRect(0,0,0,0);
270 270 minimumRect = calculateBackgroundMinimum(minimumRect);
271 271 minimumRect = calculateContentMinimum(minimumRect);
272 272 minimumRect = calculateTitleMinimum(minimumRect,title);
273 273 minimumRect = calculateLegendMinimum(minimumRect,legend);
274 274 minimumRect = calculateAxisMinimum(minimumRect,axes);
275 275 return minimumRect.united(m_minChartRect).size().toSize();
276 276 }else
277 277 return QSize(-1,-1);
278 278 }
279 279
280 280 void ChartLayout::setMargins(const QMargins& margins)
281 281 {
282 282
283 283 if(m_margins != margins){
284 284 m_margins = margins;
285 285 updateGeometry();
286 286 }
287 287 }
288 288
289 289 QMargins ChartLayout::margins() const
290 290 {
291 291 return m_margins;
292 292 }
293 293
294 294 void ChartLayout::adjustChartGeometry()
295 295 {
296 296 setGeometry(geometry());
297 297 }
298 298
299 299 QTCOMMERCIALCHART_END_NAMESPACE
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