|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2013 Digia Plc
|
|
|
** All rights reserved.
|
|
|
** For any questions to Digia, please use contact form at http://qt.digia.com
|
|
|
**
|
|
|
** This file is part of the Qt Commercial Charts Add-on.
|
|
|
**
|
|
|
** $QT_BEGIN_LICENSE$
|
|
|
** Licensees holding valid Qt Commercial licenses may use this file in
|
|
|
** accordance with the Qt Commercial License Agreement provided with the
|
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
|
** a written agreement between you and Digia.
|
|
|
**
|
|
|
** If you have questions regarding the use of this file, please use
|
|
|
** contact form at http://qt.digia.com
|
|
|
** $QT_END_LICENSE$
|
|
|
**
|
|
|
****************************************************************************/
|
|
|
|
|
|
#include "polarchartaxisradial_p.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include "abstractchartlayout_p.h"
|
|
|
#include "qabstractaxis_p.h"
|
|
|
#include "linearrowitem_p.h"
|
|
|
#include <QFontMetrics>
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
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();
|
|
|
QGraphicsSimpleTextItem* title = titleItem();
|
|
|
qreal radius = axisGeometry().height() / 2.0;
|
|
|
|
|
|
QLineF line(center, center + QPointF(0, -radius));
|
|
|
QGraphicsLineItem *axisLine = static_cast<QGraphicsLineItem *>(arrowItemList.at(0));
|
|
|
axisLine->setLine(line);
|
|
|
|
|
|
QFontMetrics fn(axis()->labelsFont());
|
|
|
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));
|
|
|
QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem *>(labelItemList.at(i));
|
|
|
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;
|
|
|
qreal labelVisible = currentTickVisible;
|
|
|
qreal labelPad = labelPadding() / 2.0;
|
|
|
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)
|
|
|
labelCoordinate = qMax(0.0, labelCoordinate);
|
|
|
|
|
|
labelCoordinate = (labelCoordinate + farEdge) / 2.0;
|
|
|
if (labelCoordinate > 0.0 && labelCoordinate < radius)
|
|
|
labelVisible = true;
|
|
|
else
|
|
|
labelVisible = false;
|
|
|
}
|
|
|
|
|
|
// Radial axis label
|
|
|
if (axis()->labelsVisible() && labelVisible) {
|
|
|
labelItem->setText(labelList.at(i));
|
|
|
QRectF labelRect = labelItem->boundingRect();
|
|
|
QPointF labelCenter = labelRect.center();
|
|
|
labelItem->setTransformOriginPoint(labelCenter.x(), labelCenter.y());
|
|
|
QRectF boundingRect = labelBoundingRect(fn, labelList.at(i));
|
|
|
boundingRect.moveCenter(labelCenter);
|
|
|
QPointF positionDiff(labelRect.topLeft() - boundingRect.topLeft());
|
|
|
QPointF labelPoint = center;
|
|
|
if (intervalAxis())
|
|
|
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;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Title, along the 0 axis
|
|
|
QString titleText = axis()->titleText();
|
|
|
if (!titleText.isEmpty() && axis()->isTitleVisible()) {
|
|
|
QFontMetrics titleMetrics(axis()->titleFont());
|
|
|
if (titleMetrics.boundingRect(titleText).width() > radius) {
|
|
|
QString string = titleText + "...";
|
|
|
while (titleMetrics.boundingRect(string).width() > radius && string.length() > 3)
|
|
|
string.remove(string.length() - 4, 1);
|
|
|
title->setText(string);
|
|
|
} else {
|
|
|
title->setText(titleText);
|
|
|
}
|
|
|
|
|
|
QRectF titleBoundingRect;
|
|
|
titleBoundingRect = title->boundingRect();
|
|
|
QPointF titleCenter = titleBoundingRect.center();
|
|
|
QPointF arrowCenter = axisLine->boundingRect().center();
|
|
|
QPointF titleCenterDiff = arrowCenter - titleCenter;
|
|
|
title->setPos(titleCenterDiff.x() - qreal(titlePadding()) - (titleBoundingRect.height() / 2.0), titleCenterDiff.y());
|
|
|
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);
|
|
|
}
|
|
|
|
|
|
for (int i = 0; i < count; ++i) {
|
|
|
QGraphicsLineItem *arrow = new QGraphicsLineItem(presenter()->rootItem());
|
|
|
QGraphicsEllipseItem *grid = new QGraphicsEllipseItem(presenter()->rootItem());
|
|
|
QGraphicsSimpleTextItem *label = new QGraphicsSimpleTextItem(presenter()->rootItem());
|
|
|
QGraphicsSimpleTextItem *title = titleItem();
|
|
|
arrow->setPen(axis()->linePen());
|
|
|
grid->setPen(axis()->gridLinePen());
|
|
|
label->setFont(axis()->labelsFont());
|
|
|
label->setPen(axis()->labelsPen());
|
|
|
label->setBrush(axis()->labelsBrush());
|
|
|
label->setRotation(axis()->labelsAngle());
|
|
|
title->setFont(axis()->titleFont());
|
|
|
title->setPen(axis()->titlePen());
|
|
|
title->setBrush(axis()->titleBrush());
|
|
|
title->setText(axis()->titleText());
|
|
|
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);
|
|
|
}
|
|
|
|
|
|
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;
|
|
|
}
|
|
|
|
|
|
#include "moc_polarchartaxisradial_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
