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Updated plugins.qmltypes...
Updated plugins.qmltypes Change-Id: I20425a87f2a3c5f2ad0df1c9ff1229f1ca2aa76c Reviewed-by: Miikka Heikkinen <miikka.heikkinen@theqtcompany.com>
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r2801:acb3f8c5f190
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polarchartaxisradial.cpp
381 lines | 15.3 KiB | text/x-c | CppLexer
/ src / charts / axis / polarchartaxisradial.cpp
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Miikka Heikkinen
Add Polar chart support...
 r2483 /****************************************************************************
**
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Copyright header changes...
 r2776 ** Copyright (C) 2015 The Qt Company Ltd
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 r2483 ** All rights reserved.
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Copyright header changes...
 r2776 ** For any questions to The Qt Company, please use contact form at http://qt.io
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 r2483 **
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Updated license headers...
 r2740 ** This file is part of the Qt Charts module.
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 r2483 **
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Updated license headers...
 r2740 ** Licensees holding valid commercial license for Qt may use this file in
** accordance with the Qt License Agreement provided with the Software
** or, alternatively, in accordance with the terms contained in a written
Titta Heikkala
Copyright header changes...
 r2776 ** agreement between you and The Qt Company.
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 r2483 **
** If you have questions regarding the use of this file, please use
Titta Heikkala
Updated license headers...
 r2740 ** contact form at http://qt.io
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 r2483 **
****************************************************************************/
Titta Heikkala
Fix include syntax...
 r2714 #include <private/polarchartaxisradial_p.h>
#include <private/chartpresenter_p.h>
#include <private/abstractchartlayout_p.h>
#include <private/qabstractaxis_p.h>
#include <private/linearrowitem_p.h>
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 r2801 #include <QtCharts/QCategoryAxis>
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Fix include syntax...
 r2714 #include <QtGui/QTextDocument>
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 r2483
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Qt Charts project file structure change...
 r2712 QT_CHARTS_BEGIN_NAMESPACE
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 r2483
PolarChartAxisRadial::PolarChartAxisRadial(QAbstractAxis *axis, QGraphicsItem *item, bool intervalAxis)
: PolarChartAxis(axis, item, intervalAxis)
{
}
PolarChartAxisRadial::~PolarChartAxisRadial()
{
}
void PolarChartAxisRadial::updateGeometry()
{
const QVector<qreal> &layout = this->layout();
if (layout.isEmpty())
return;
createAxisLabels(layout);
QStringList labelList = labels();
QPointF center = axisGeometry().center();
QList<QGraphicsItem *> arrowItemList = arrowItems();
QList<QGraphicsItem *> gridItemList = gridItems();
QList<QGraphicsItem *> labelItemList = labelItems();
QList<QGraphicsItem *> shadeItemList = shadeItems();
Titta Heikkala
Added minor ticks to value axis...
 r2795 QList<QGraphicsItem *> minorGridItemList = minorGridItems();
QList<QGraphicsItem *> minorArrowItemList = minorArrowItems();
Miikka Heikkinen
Added HTML support for various text items...
 r2539 QGraphicsTextItem* title = titleItem();
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 r2483 qreal radius = axisGeometry().height() / 2.0;
QLineF line(center, center + QPointF(0, -radius));
QGraphicsLineItem *axisLine = static_cast<QGraphicsLineItem *>(arrowItemList.at(0));
axisLine->setLine(line);
QRectF previousLabelRect;
bool firstShade = true;
bool nextTickVisible = false;
if (layout.size())
nextTickVisible = !(layout.at(0) < 0.0 || layout.at(0) > radius);
for (int i = 0; i < layout.size(); ++i) {
qreal radialCoordinate = layout.at(i);
QGraphicsEllipseItem *gridItem = static_cast<QGraphicsEllipseItem *>(gridItemList.at(i));
QGraphicsLineItem *tickItem = static_cast<QGraphicsLineItem *>(arrowItemList.at(i + 1));
Miikka Heikkinen
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 r2539 QGraphicsTextItem *labelItem = static_cast<QGraphicsTextItem *>(labelItemList.at(i));
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 r2483 QGraphicsPathItem *shadeItem = 0;
if (i == 0)
shadeItem = static_cast<QGraphicsPathItem *>(shadeItemList.at(0));
else if (i % 2)
shadeItem = static_cast<QGraphicsPathItem *>(shadeItemList.at((i / 2) + 1));
// Ignore ticks outside valid range
bool currentTickVisible = nextTickVisible;
if ((i == layout.size() - 1)
|| layout.at(i + 1) < 0.0
|| layout.at(i + 1) > radius) {
nextTickVisible = false;
} else {
nextTickVisible = true;
}
qreal labelCoordinate = radialCoordinate;
Miikka Heikkinen
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 r2801 bool labelVisible = currentTickVisible;
Miikka Heikkinen
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 r2483 qreal labelPad = labelPadding() / 2.0;
Miikka Heikkinen
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 r2801 bool centeredLabel = true; // Only used with interval axes
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 r2483 if (intervalAxis()) {
qreal farEdge;
if (i == (layout.size() - 1))
farEdge = radius;
else
farEdge = qMin(radius, layout.at(i + 1));
// Adjust the labelCoordinate to show it if next tick is visible
if (nextTickVisible)
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 r2504 labelCoordinate = qMax(qreal(0.0), labelCoordinate);
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 r2483
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 r2801 if (axis()->type() == QAbstractAxis::AxisTypeCategory) {
QCategoryAxis *categoryAxis = static_cast<QCategoryAxis *>(axis());
if (categoryAxis->labelsPosition() == QCategoryAxis::AxisLabelsPositionOnValue)
centeredLabel = false;
}
if (centeredLabel) {
labelCoordinate = (labelCoordinate + farEdge) / 2.0;
if (labelCoordinate > 0.0 && labelCoordinate < radius)
labelVisible = true;
else
labelVisible = false;
} else {
labelVisible = nextTickVisible;
labelCoordinate = farEdge;
}
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 r2483 }
// Radial axis label
if (axis()->labelsVisible() && labelVisible) {
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 r2607 QRectF boundingRect = ChartPresenter::textBoundingRect(axis()->labelsFont(),
labelList.at(i),
axis()->labelsAngle());
labelItem->setTextWidth(boundingRect.width());
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 r2539 labelItem->setHtml(labelList.at(i));
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 r2483 QRectF labelRect = labelItem->boundingRect();
QPointF labelCenter = labelRect.center();
labelItem->setTransformOriginPoint(labelCenter.x(), labelCenter.y());
boundingRect.moveCenter(labelCenter);
QPointF positionDiff(labelRect.topLeft() - boundingRect.topLeft());
QPointF labelPoint = center;
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 r2801 if (intervalAxis() && centeredLabel)
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 r2483 labelPoint += QPointF(labelPad, -labelCoordinate - (boundingRect.height() / 2.0));
else
labelPoint += QPointF(labelPad, labelPad - labelCoordinate);
labelRect.moveTopLeft(labelPoint);
labelItem->setPos(labelRect.topLeft() + positionDiff);
// Label overlap detection
labelRect.setSize(boundingRect.size());
if ((i && previousLabelRect.intersects(labelRect))
|| !axisGeometry().contains(labelRect)) {
labelVisible = false;
} else {
previousLabelRect = labelRect;
labelVisible = true;
}
}
labelItem->setVisible(labelVisible);
if (!currentTickVisible) {
gridItem->setVisible(false);
tickItem->setVisible(false);
if (shadeItem)
shadeItem->setVisible(false);
continue;
}
// Radial grid line
QRectF gridRect;
gridRect.setWidth(radialCoordinate * 2.0);
gridRect.setHeight(radialCoordinate * 2.0);
gridRect.moveCenter(center);
gridItem->setRect(gridRect);
gridItem->setVisible(true);
// Tick
QLineF tickLine(-tickWidth(), 0.0, tickWidth(), 0.0);
tickLine.translate(center.rx(), gridRect.top());
tickItem->setLine(tickLine);
tickItem->setVisible(true);
// Shades
if (i % 2 || (i == 0 && !nextTickVisible)) {
QPainterPath path;
if (i == 0) {
// If first tick is also the last, we need to custom fill the inner circle
// or it won't get filled.
QRectF innerCircle(0.0, 0.0, layout.at(0) * 2.0, layout.at(0) * 2.0);
innerCircle.moveCenter(center);
path.addEllipse(innerCircle);
} else {
QRectF otherGridRect;
if (!nextTickVisible) { // Last visible tick
otherGridRect = axisGeometry();
} else {
qreal otherGridRectDimension = layout.at(i + 1) * 2.0;
otherGridRect.setWidth(otherGridRectDimension);
otherGridRect.setHeight(otherGridRectDimension);
otherGridRect.moveCenter(center);
}
path.addEllipse(gridRect);
path.addEllipse(otherGridRect);
// Add additional shading in first visible shade item if there is a partial tick
// to be filled at the center (log & category axes)
if (firstShade) {
QGraphicsPathItem *specialShadeItem = static_cast<QGraphicsPathItem *>(shadeItemList.at(0));
if (layout.at(i - 1) > 0.0) {
QRectF innerCircle(0.0, 0.0, layout.at(i - 1) * 2.0, layout.at(i - 1) * 2.0);
innerCircle.moveCenter(center);
QPainterPath specialPath;
specialPath.addEllipse(innerCircle);
specialShadeItem->setPath(specialPath);
specialShadeItem->setVisible(true);
} else {
specialShadeItem->setVisible(false);
}
}
}
shadeItem->setPath(path);
shadeItem->setVisible(true);
firstShade = false;
}
Titta Heikkala
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 r2795
// Minor ticks
QValueAxis *valueAxis = qobject_cast<QValueAxis *>(axis());
if ((i + 1) != layout.size() && valueAxis) {
int minorTickCount = valueAxis->minorTickCount();
if (minorTickCount != 0) {
qreal minorRadialCoordinate = (layout[i + 1] - layout[i])
/ qreal(minorTickCount + 1) * 2.0;
for (int j = 0; j < minorTickCount; j++) {
QGraphicsEllipseItem *minorGridItem =
static_cast<QGraphicsEllipseItem *>(minorGridItemList.at(i * minorTickCount + j));
QGraphicsLineItem *minorTickItem =
static_cast<QGraphicsLineItem *>(minorArrowItemList.at(i * minorTickCount + j));
QRectF minorGridRect;
minorGridRect.setWidth(minorRadialCoordinate * qreal(i + 1)
+ minorRadialCoordinate * qreal(i * minorTickCount + j));
minorGridRect.setHeight(minorRadialCoordinate * qreal(i + 1)
+ minorRadialCoordinate
* qreal(i * minorTickCount + j));
minorGridRect.moveCenter(center);
minorGridItem->setRect(minorGridRect);
minorGridItem->setVisible(true);
QLineF minorTickLine(-tickWidth() + 1, 0.0, tickWidth() - 1, 0.0);
tickLine.translate(center.rx(), minorGridRect.top());
minorTickItem->setLine(minorTickLine);
minorTickItem->setVisible(true);
}
}
}
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 r2483 }
// Title, along the 0 axis
QString titleText = axis()->titleText();
if (!titleText.isEmpty() && axis()->isTitleVisible()) {
Titta Heikkala
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 r2607 QRectF truncatedRect;
Titta Heikkala
Fix long labels visibility for QBarChart...
 r2604 title->setHtml(ChartPresenter::truncatedText(axis()->titleFont(), titleText, qreal(0.0),
Titta Heikkala
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 r2607 radius, radius, truncatedRect));
title->setTextWidth(truncatedRect.width());
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 r2483
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 r2534 QRectF titleBoundingRect = title->boundingRect();
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 r2483 QPointF titleCenter = titleBoundingRect.center();
QPointF arrowCenter = axisLine->boundingRect().center();
QPointF titleCenterDiff = arrowCenter - titleCenter;
Miikka Heikkinen
Fix multiline axis titles truncation...
 r2540 title->setPos(titleCenterDiff.x() - titlePadding() - (titleBoundingRect.height() / 2.0), titleCenterDiff.y());
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 r2483 title->setTransformOriginPoint(titleCenter);
title->setRotation(270.0);
}
QGraphicsLayoutItem::updateGeometry();
}
Qt::Orientation PolarChartAxisRadial::orientation() const
{
return Qt::Vertical;
}
void PolarChartAxisRadial::createItems(int count)
{
if (arrowItems().count() == 0) {
// radial axis center line
QGraphicsLineItem *arrow = new LineArrowItem(this, presenter()->rootItem());
arrow->setPen(axis()->linePen());
arrowGroup()->addToGroup(arrow);
}
Titta Heikkala
Fix setting the axis title...
 r2608 QGraphicsTextItem *title = titleItem();
title->setFont(axis()->titleFont());
title->setDefaultTextColor(axis()->titleBrush().color());
title->setHtml(axis()->titleText());
Miikka Heikkinen
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 r2483 for (int i = 0; i < count; ++i) {
QGraphicsLineItem *arrow = new QGraphicsLineItem(presenter()->rootItem());
QGraphicsEllipseItem *grid = new QGraphicsEllipseItem(presenter()->rootItem());
Miikka Heikkinen
Added HTML support for various text items...
 r2539 QGraphicsTextItem *label = new QGraphicsTextItem(presenter()->rootItem());
Miikka Heikkinen
Fix text item margins...
 r2592 label->document()->setDocumentMargin(ChartPresenter::textMargin());
Miikka Heikkinen
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 r2483 arrow->setPen(axis()->linePen());
grid->setPen(axis()->gridLinePen());
label->setFont(axis()->labelsFont());
Miikka Heikkinen
Added HTML support for various text items...
 r2539 label->setDefaultTextColor(axis()->labelsBrush().color());
Miikka Heikkinen
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 r2483 label->setRotation(axis()->labelsAngle());
arrowGroup()->addToGroup(arrow);
gridGroup()->addToGroup(grid);
labelGroup()->addToGroup(label);
if (gridItems().size() == 1 || (((gridItems().size() + 1) % 2) && gridItems().size() > 0)) {
QGraphicsPathItem *shade = new QGraphicsPathItem(presenter()->rootItem());
shade->setPen(axis()->shadesPen());
shade->setBrush(axis()->shadesBrush());
shadeGroup()->addToGroup(shade);
}
}
}
void PolarChartAxisRadial::handleArrowPenChanged(const QPen &pen)
{
foreach (QGraphicsItem *item, arrowItems())
static_cast<QGraphicsLineItem *>(item)->setPen(pen);
}
void PolarChartAxisRadial::handleGridPenChanged(const QPen &pen)
{
foreach (QGraphicsItem *item, gridItems())
static_cast<QGraphicsEllipseItem *>(item)->setPen(pen);
}
Titta Heikkala
Added minor ticks to value axis...
 r2795 void PolarChartAxisRadial::handleMinorArrowPenChanged(const QPen &pen)
{
foreach (QGraphicsItem *item, minorArrowItems())
static_cast<QGraphicsLineItem *>(item)->setPen(pen);
}
void PolarChartAxisRadial::handleMinorGridPenChanged(const QPen &pen)
{
foreach (QGraphicsItem *item, minorGridItems())
static_cast<QGraphicsEllipseItem *>(item)->setPen(pen);
}
Miikka Heikkinen
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 r2483 QSizeF PolarChartAxisRadial::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
{
Q_UNUSED(which);
Q_UNUSED(constraint);
return QSizeF(-1.0, -1.0);
}
qreal PolarChartAxisRadial::preferredAxisRadius(const QSizeF &maxSize)
{
qreal radius = maxSize.height() / 2.0;
if (maxSize.width() < maxSize.height())
radius = maxSize.width() / 2.0;
return radius;
}
Titta Heikkala
Added minor ticks to value axis...
 r2795 void PolarChartAxisRadial::updateMinorTickItems()
{
QValueAxis *valueAxis = qobject_cast<QValueAxis *>(this->axis());
if (valueAxis) {
int currentCount = minorArrowItems().size();
int expectedCount = valueAxis->minorTickCount() * (valueAxis->tickCount() - 1);
int diff = expectedCount - currentCount;
if (diff > 0) {
for (int i = 0; i < diff; i++) {
QGraphicsLineItem *minorArrow = new QGraphicsLineItem(presenter()->rootItem());
QGraphicsEllipseItem *minorGrid = new QGraphicsEllipseItem(presenter()->rootItem());
minorArrow->setPen(valueAxis->linePen());
minorGrid->setPen(valueAxis->minorGridLinePen());
minorArrowGroup()->addToGroup(minorArrow);
minorGridGroup()->addToGroup(minorGrid);
}
} else {
QList<QGraphicsItem *> minorGridLines = minorGridItems();
QList<QGraphicsItem *> minorArrows = minorArrowItems();
for (int i = 0; i > diff; i--) {
if (!minorGridLines.isEmpty())
delete(minorGridLines.takeLast());
if (!minorArrows.isEmpty())
delete(minorArrows.takeLast());
}
}
}
}
Miikka Heikkinen
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 r2483 #include "moc_polarchartaxisradial_p.cpp"
Titta Heikkala
Qt Charts project file structure change...
 r2712 QT_CHARTS_END_NAMESPACE