|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2012 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 "horizontalaxis_p.h"
|
|
|
#include "qabstractaxis.h"
|
|
|
#include <QFontMetrics>
|
|
|
#include <qmath.h>
|
|
|
#include <QDebug>
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
HorizontalAxis::HorizontalAxis(QAbstractAxis *axis, QGraphicsItem* item , bool intervalAxis)
|
|
|
: ChartAxis(axis, item, intervalAxis)
|
|
|
{
|
|
|
}
|
|
|
|
|
|
HorizontalAxis::~HorizontalAxis()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
void HorizontalAxis::updateGeometry()
|
|
|
{
|
|
|
const QVector<qreal>& layout = ChartAxis::layout();
|
|
|
|
|
|
if (layout.isEmpty())
|
|
|
return;
|
|
|
|
|
|
QStringList labelList = labels();
|
|
|
|
|
|
QList<QGraphicsItem *> lines = lineItems();
|
|
|
QList<QGraphicsItem *> labels = labelItems();
|
|
|
QList<QGraphicsItem *> shades = shadeItems();
|
|
|
QList<QGraphicsItem *> axis = arrowItems();
|
|
|
QGraphicsSimpleTextItem* title = titleItem();
|
|
|
|
|
|
Q_ASSERT(labels.size() == labelList.size());
|
|
|
Q_ASSERT(layout.size() == labelList.size());
|
|
|
|
|
|
const QRectF &axisRect = axisGeometry();
|
|
|
const QRectF &gridRect = gridGeometry();
|
|
|
|
|
|
//arrow
|
|
|
QGraphicsLineItem *arrowItem = static_cast<QGraphicsLineItem *>(axis.at(0));
|
|
|
|
|
|
if (alignment() == Qt::AlignTop)
|
|
|
arrowItem->setLine(gridRect.left(), axisRect.bottom(), gridRect.right(), axisRect.bottom());
|
|
|
else if (alignment() == Qt::AlignBottom)
|
|
|
arrowItem->setLine(gridRect.left(), axisRect.top(), gridRect.right(), axisRect.top());
|
|
|
|
|
|
qreal width = 0;
|
|
|
QFontMetrics fn(font());
|
|
|
|
|
|
//title
|
|
|
|
|
|
if (!titleText().isNull()) {
|
|
|
QFontMetrics fn(title->font());
|
|
|
|
|
|
int size(0);
|
|
|
|
|
|
size = gridRect.width();
|
|
|
QString titleText = this->titleText();
|
|
|
|
|
|
if (fn.boundingRect(titleText).width() > size) {
|
|
|
QString string = titleText + "...";
|
|
|
while (fn.boundingRect(string).width() > size && string.length() > 3)
|
|
|
string.remove(string.length() - 4, 1);
|
|
|
title->setText(string);
|
|
|
} else {
|
|
|
title->setText(titleText);
|
|
|
}
|
|
|
|
|
|
QPointF center = gridRect.center() - title->boundingRect().center();
|
|
|
if (alignment() == Qt::AlignTop) {
|
|
|
title->setPos(center.x(), axisRect.top());
|
|
|
} else if (alignment() == Qt::AlignBottom) {
|
|
|
title->setPos(center.x(), axisRect.bottom() - title->boundingRect().height());
|
|
|
}
|
|
|
}
|
|
|
|
|
|
for (int i = 0; i < layout.size(); ++i) {
|
|
|
|
|
|
//items
|
|
|
QGraphicsLineItem *gridItem = static_cast<QGraphicsLineItem*>(lines.at(i));
|
|
|
QGraphicsLineItem *tickItem = static_cast<QGraphicsLineItem*>(axis.at(i + 1));
|
|
|
QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem *>(labels.at(i));
|
|
|
|
|
|
//grid line
|
|
|
gridItem->setLine(layout[i], gridRect.top(), layout[i], gridRect.bottom());
|
|
|
|
|
|
//label text wrapping
|
|
|
if(intervalAxis()&& i+1!=layout.size()) {
|
|
|
//wrapping in case of interval axis
|
|
|
const qreal delta = layout[i+1] - layout[i];
|
|
|
QString text = labelList.at(i);
|
|
|
if (fn.boundingRect(text).width() + 1 > delta )
|
|
|
{
|
|
|
QString label = text + "...";
|
|
|
while (fn.boundingRect(label).width() >= delta && label.length() > 3)
|
|
|
label.remove(label.length() - 4, 1);
|
|
|
labelItem->setText(label);
|
|
|
}
|
|
|
else {
|
|
|
labelItem->setText(text);
|
|
|
}
|
|
|
}else{
|
|
|
labelItem->setText(labelList.at(i));
|
|
|
}
|
|
|
|
|
|
//label transformation origin point
|
|
|
const QRectF& rect = labelItem->boundingRect();
|
|
|
QPointF center = rect.center();
|
|
|
labelItem->setTransformOriginPoint(center.x(), center.y());
|
|
|
|
|
|
//ticks and label position
|
|
|
if (alignment() == Qt::AlignTop) {
|
|
|
labelItem->setPos(layout[i] - center.x(), axisRect.bottom() - rect.height() - labelPadding());
|
|
|
tickItem->setLine(layout[i], axisRect.bottom(), layout[i], axisRect.bottom() - labelPadding());
|
|
|
} else if (alignment() == Qt::AlignBottom) {
|
|
|
labelItem->setPos(layout[i] - center.x(), axisRect.top() + labelPadding());
|
|
|
tickItem->setLine(layout[i], axisRect.top(), layout[i], axisRect.top() + labelPadding());
|
|
|
}
|
|
|
|
|
|
//label in beetwen
|
|
|
if(intervalAxis()&& i+1!=layout.size()) {
|
|
|
const qreal delta = (layout[i+1] - layout[i])/2;
|
|
|
labelItem->setPos(layout[i] + delta - center.x(), labelItem->pos().y());
|
|
|
}
|
|
|
|
|
|
//label overlap detection
|
|
|
if(labelItem->pos().x() < width ||
|
|
|
labelItem->pos().x() < axisRect.left() ||
|
|
|
labelItem->pos().x() + rect.width() -1 > axisRect.right()){
|
|
|
labelItem->setVisible(false);
|
|
|
} else {
|
|
|
labelItem->setVisible(true);
|
|
|
width=rect.width()+labelItem->pos().x();
|
|
|
}
|
|
|
|
|
|
//shades
|
|
|
if ((i + 1) % 2 && i > 1) {
|
|
|
QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem *>(shades.at(i / 2 - 1));
|
|
|
rectItem->setRect(layout[i - 1], gridRect.top(), layout[i] - layout[i - 1], gridRect.height());
|
|
|
}
|
|
|
|
|
|
// check if the grid line and the axis tick should be shown
|
|
|
qreal x = gridItem->line().p1().x();
|
|
|
if (x < gridRect.left() || x > gridRect.right()) {
|
|
|
gridItem->setVisible(false);
|
|
|
tickItem->setVisible(false);
|
|
|
}else{
|
|
|
gridItem->setVisible(true);
|
|
|
tickItem->setVisible(true);
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
//begin/end grid line in case labels between
|
|
|
if (intervalAxis()) {
|
|
|
QGraphicsLineItem *gridLine;
|
|
|
gridLine = static_cast<QGraphicsLineItem *>(lines.at(layout.size()));
|
|
|
gridLine->setLine(gridRect.right(), gridRect.top(), gridRect.right(), gridRect.bottom());
|
|
|
gridLine->setVisible(true);
|
|
|
gridLine = static_cast<QGraphicsLineItem*>(lines.at(layout.size()+1));
|
|
|
gridLine->setLine(gridRect.left(), gridRect.top(), gridRect.left(), gridRect.bottom());
|
|
|
gridLine->setVisible(true);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
QSizeF HorizontalAxis::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
|
|
|
{
|
|
|
Q_UNUSED(constraint);
|
|
|
QFontMetrics fn(titleFont());
|
|
|
QSizeF sh(0,0);
|
|
|
|
|
|
if (titleText().isNull() || !titleItem()->isVisible())
|
|
|
return sh;
|
|
|
|
|
|
switch (which) {
|
|
|
case Qt::MinimumSize:
|
|
|
sh = QSizeF(fn.boundingRect("...").width(), fn.height());
|
|
|
break;
|
|
|
case Qt::MaximumSize:
|
|
|
case Qt::PreferredSize:
|
|
|
sh = QSizeF(fn.boundingRect(axis()->titleText()).width(), fn.height());
|
|
|
break;
|
|
|
default:
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
return sh;
|
|
|
}
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
