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Fixed a bug with legend attach requiring a screen resize to update UI
Tero Ahola -
r2013:aa64defd89b9
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@@ -8,7 +8,11
8 In example we use barseries where we add or remove barsets. The legend reflects the changes in series. Legend can be detached or attached back to chart and its alignment can be modified.
8 In example we use barseries where we add or remove barsets. The legend reflects the changes in series. Legend can be detached or attached back to chart and its alignment can be modified.
9 When legend is detached, it can be resized and positioned freely.
9 When legend is detached, it can be resized and positioned freely.
10
10
11 \image examples_legend_detach.png
11 \table
12 \row
13 \o \inlineimage examples_legend_detach.png
14 \o \inlineimage examples_legend_detach2.png
15 \endtable
12
16
13 Here we turn legend visible and set its alignment to the bottom of the chart.
17 Here we turn legend visible and set its alignment to the bottom of the chart.
14
18
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@@ -30,7 +30,7 int main(int argc, char *argv[])
30 QApplication a(argc, argv);
30 QApplication a(argc, argv);
31
31
32 MainWidget w;
32 MainWidget w;
33 w.resize(1024,768);
33 w.resize(720, 480);
34 w.show();
34 w.show();
35
35
36 return a.exec();
36 return a.exec();
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@@ -36,12 +36,9 MainWidget::MainWidget(QWidget *parent) :
36 {
36 {
37 // Create buttons for ui
37 // Create buttons for ui
38 m_buttonLayout = new QGridLayout();
38 m_buttonLayout = new QGridLayout();
39 QPushButton *detachLegendButton = new QPushButton("detach legend");
39 QPushButton *detachLegendButton = new QPushButton("Toggle attached");
40 connect(detachLegendButton, SIGNAL(clicked()), this, SLOT(detachLegend()));
40 connect(detachLegendButton, SIGNAL(clicked()), this, SLOT(toggleAttached()));
41 m_buttonLayout->addWidget(detachLegendButton, 0, 0);
41 m_buttonLayout->addWidget(detachLegendButton, 0, 0);
42 QPushButton *attachLegendButton = new QPushButton("attach legend");
43 connect(attachLegendButton, SIGNAL(clicked()), this, SLOT(attachLegend()));
44 m_buttonLayout->addWidget(attachLegendButton, 1, 0);
45
42
46 QPushButton *addSetButton = new QPushButton("add barset");
43 QPushButton *addSetButton = new QPushButton("add barset");
47 connect(addSetButton, SIGNAL(clicked()), this, SLOT(addBarset()));
44 connect(addSetButton, SIGNAL(clicked()), this, SLOT(addBarset()));
@@ -50,21 +47,9 MainWidget::MainWidget(QWidget *parent) :
50 connect(removeBarsetButton, SIGNAL(clicked()), this, SLOT(removeBarset()));
47 connect(removeBarsetButton, SIGNAL(clicked()), this, SLOT(removeBarset()));
51 m_buttonLayout->addWidget(removeBarsetButton, 3, 0);
48 m_buttonLayout->addWidget(removeBarsetButton, 3, 0);
52
49
53 QPushButton *leftButton = new QPushButton("Align legend left");
50 QPushButton *alignButton = new QPushButton("Align (Bottom)");
54 connect(leftButton, SIGNAL(clicked()), this, SLOT(setLegendLeft()));
51 connect(alignButton, SIGNAL(clicked()), this, SLOT(setLegendAlignment()));
55 m_buttonLayout->addWidget(leftButton, 4, 0);
52 m_buttonLayout->addWidget(alignButton, 4, 0);
56
57 QPushButton *rightButton = new QPushButton("Align legend right");
58 connect(rightButton, SIGNAL(clicked()), this, SLOT(setLegendRight()));
59 m_buttonLayout->addWidget(rightButton, 5, 0);
60
61 QPushButton *topButton = new QPushButton("Align legend top");
62 connect(topButton, SIGNAL(clicked()), this, SLOT(setLegendTop()));
63 m_buttonLayout->addWidget(topButton, 6, 0);
64
65 QPushButton *bottomButton = new QPushButton("Align legend bottom");
66 connect(bottomButton, SIGNAL(clicked()), this, SLOT(setLegendBottom()));
67 m_buttonLayout->addWidget(bottomButton, 7, 0);
68
53
69 QPushButton *boldButton = new QPushButton("Toggle bold");
54 QPushButton *boldButton = new QPushButton("Toggle bold");
70 connect(boldButton, SIGNAL(clicked()), this, SLOT(toggleBold()));
55 connect(boldButton, SIGNAL(clicked()), this, SLOT(toggleBold()));
@@ -85,8 +70,8 MainWidget::MainWidget(QWidget *parent) :
85 connect(m_legendHeight, SIGNAL(valueChanged(double)), this, SLOT(updateLegendLayout()));
70 connect(m_legendHeight, SIGNAL(valueChanged(double)), this, SLOT(updateLegendLayout()));
86
71
87 QFormLayout* legendLayout = new QFormLayout();
72 QFormLayout* legendLayout = new QFormLayout();
88 legendLayout->addRow("Horizontal position", m_legendPosX);
73 legendLayout->addRow("HPos", m_legendPosX);
89 legendLayout->addRow("Vertical position", m_legendPosY);
74 legendLayout->addRow("VPos", m_legendPosY);
90 legendLayout->addRow("Width", m_legendWidth);
75 legendLayout->addRow("Width", m_legendWidth);
91 legendLayout->addRow("Height", m_legendHeight);
76 legendLayout->addRow("Height", m_legendHeight);
92 m_legendSettings = new QGroupBox("Detached legend");
77 m_legendSettings = new QGroupBox("Detached legend");
@@ -163,32 +148,25 void MainWidget::hideLegendSpinbox()
163 }
148 }
164
149
165
150
166 void MainWidget::detachLegend()
151 void MainWidget::toggleAttached()
167 {
152 {
168 //![2]
169 QLegend *legend = m_chart->legend();
153 QLegend *legend = m_chart->legend();
170 legend->detachFromChart();
154 if (legend->isAttachedToChart()) {
171
155 //![2]
172 m_chart->legend()->setBackgroundVisible(true);
156 legend->detachFromChart();
173 m_chart->legend()->setBrush(QBrush(QColor(128,128,128,128)));
157 m_chart->legend()->setBackgroundVisible(true);
174 m_chart->legend()->setPen(QPen(QColor(192,192,192,192)));
158 m_chart->legend()->setBrush(QBrush(QColor(128,128,128,128)));
175 //![2]
159 m_chart->legend()->setPen(QPen(QColor(192,192,192,192)));
176
160 //![2]
177 showLegendSpinbox();
161 showLegendSpinbox();
178 updateLegendLayout();
162 updateLegendLayout();
179 update();
163 } else {
180 }
164 //![3]
181
165 legend->attachToChart();
182
166 legend->setBackgroundVisible(false);
183 void MainWidget::attachLegend()
167 //![3]
184 {
168 hideLegendSpinbox();
185 //![3]
169 }
186 QLegend *legend = m_chart->legend();
187 legend->attachToChart();
188 m_chart->legend()->setBackgroundVisible(false);
189 //![3]
190
191 hideLegendSpinbox();
192 update();
170 update();
193 }
171 }
194
172
@@ -208,24 +186,32 void MainWidget::removeBarset()
208 }
186 }
209 }
187 }
210
188
211 void MainWidget::setLegendLeft()
189 void MainWidget::setLegendAlignment()
212 {
190 {
213 m_chart->legend()->setAlignment(Qt::AlignLeft);
191 QPushButton *button = qobject_cast<QPushButton *>(sender());
214 }
192
215
193 switch (m_chart->legend()->alignment()) {
216 void MainWidget::setLegendRight()
194 case Qt::AlignTop:
217 {
195 m_chart->legend()->setAlignment(Qt::AlignLeft);
218 m_chart->legend()->setAlignment(Qt::AlignRight);
196 if (button)
219 }
197 button->setText("Align (Left)");
220
198 break;
221 void MainWidget::setLegendTop()
199 case Qt::AlignLeft:
222 {
200 m_chart->legend()->setAlignment(Qt::AlignBottom);
223 m_chart->legend()->setAlignment(Qt::AlignTop);
201 if (button)
224 }
202 button->setText("Align (Bottom)");
225
203 break;
226 void MainWidget::setLegendBottom()
204 case Qt::AlignBottom:
227 {
205 m_chart->legend()->setAlignment(Qt::AlignRight);
228 m_chart->legend()->setAlignment(Qt::AlignBottom);
206 if (button)
207 button->setText("Align (Right)");
208 break;
209 default:
210 if (button)
211 button->setText("Align (Top)");
212 m_chart->legend()->setAlignment(Qt::AlignTop);
213 break;
214 }
229 }
215 }
230
216
231 void MainWidget::toggleBold()
217 void MainWidget::toggleBold()
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@@ -46,15 +46,11 public:
46 signals:
46 signals:
47
47
48 public slots:
48 public slots:
49 void detachLegend();
49 void toggleAttached();
50 void attachLegend();
51 void addBarset();
50 void addBarset();
52 void removeBarset();
51 void removeBarset();
53
52
54 void setLegendLeft();
53 void setLegendAlignment();
55 void setLegendRight();
56 void setLegendTop();
57 void setLegendBottom();
58
54
59 void toggleBold();
55 void toggleBold();
60 void toggleItalic();
56 void toggleItalic();
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@@ -366,7 +366,7 void QLegend::detachFromChart()
366 void QLegend::attachToChart()
366 void QLegend::attachToChart()
367 {
367 {
368 d_ptr->m_attachedToChart = true;
368 d_ptr->m_attachedToChart = true;
369 d_ptr->m_layout->invalidate();
369 d_ptr->m_presenter->layout()->invalidate();
370 setParent(d_ptr->m_chart);
370 setParent(d_ptr->m_chart);
371 }
371 }
372
372
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