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Fixed not correctly disabled datetimeaxis example
Fixed not correctly disabled datetimeaxis example

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chartlayout.cpp
180 lines | 6.2 KiB | text/x-c | CppLexer
/****************************************************************************
**
** 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 "chartlayout_p.h"
#include "chartpresenter_p.h"
#include "qlegend_p.h"
#include "chartaxis_p.h"
#include <QDebug>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
ChartLayout::ChartLayout(ChartPresenter* presenter):
m_presenter(presenter),
m_marginBig(60),
m_marginSmall(20),
m_marginTiny(10),
m_chartMargins(m_marginBig,m_marginBig,m_marginBig,m_marginBig),
m_intialized(false)
{
}
ChartLayout::~ChartLayout()
{
}
void ChartLayout::setGeometry(const QRectF& rect)
{
if (!rect.isValid()) return;
QGraphicsLayout::setGeometry(rect);
if(!m_intialized){
m_presenter->setGeometry(rect);
m_intialized=true;
}
// check title size
QSize titleSize = QSize(0,0);
if (m_presenter->titleItem()) {
titleSize= m_presenter->titleItem()->boundingRect().size().toSize();
}
qreal axisHeight = 0;
qreal axisWidth = 0;
// check axis size
foreach (ChartAxis* axis,m_presenter->axisItems()){
if(axis->axisType() == ChartAxis::X_AXIS)
axisHeight = qMax(axis->minimumHeight(),axisHeight);
else
axisWidth = qMax(axis->minimumWidth(),axisWidth);
}
QLegend* legend = m_presenter->legend();
Q_ASSERT(legend);
qreal titlePadding = m_chartMargins.top()/2;
QMargins chartMargins = m_chartMargins;
//TODO multiple axis handling;
chartMargins.setLeft(qMax(m_chartMargins.left(),int(axisWidth + 2*m_marginTiny)));
chartMargins.setBottom(qMax(m_chartMargins.bottom(),int(axisHeight + 2* m_marginTiny)));
// recalculate legend position
if ((legend->isAttachedToChart() && legend->isVisible())) {
// Reserve some space for legend
switch (legend->alignment()) {
case Qt::AlignTop: {
QSizeF legendSize = legend->effectiveSizeHint(Qt::PreferredSize,QSizeF(rect.width(),-1));
int topMargin = 2*m_marginTiny + titleSize.height() + legendSize.height() + m_marginTiny;
chartMargins = QMargins(chartMargins.left(),topMargin,chartMargins.right(),chartMargins.bottom());
m_legendMargins = QMargins(chartMargins.left(),topMargin - (legendSize.height() + m_marginTiny),chartMargins.right(),rect.height()-topMargin + m_marginTiny);
titlePadding = m_marginTiny + m_marginTiny;
break;
}
case Qt::AlignBottom: {
QSizeF legendSize = legend->effectiveSizeHint(Qt::PreferredSize,QSizeF(rect.width(),-1));
int bottomMargin = m_marginTiny + legendSize.height() + m_marginTiny + axisHeight;
chartMargins = QMargins(chartMargins.left(),chartMargins.top(),chartMargins.right(),bottomMargin);
m_legendMargins = QMargins(chartMargins.left(),rect.height()-bottomMargin + m_marginTiny + axisHeight,chartMargins.right(),m_marginTiny + m_marginSmall);
titlePadding = chartMargins.top()/2;
break;
}
case Qt::AlignLeft: {
QSizeF legendSize = legend->effectiveSizeHint(Qt::PreferredSize,QSizeF(-1,rect.height()));
int leftPadding = m_marginTiny + legendSize.width() + m_marginTiny + axisWidth;
chartMargins = QMargins(leftPadding,chartMargins.top(),chartMargins.right(),chartMargins.bottom());
m_legendMargins = QMargins(m_marginTiny + m_marginSmall,chartMargins.top(),rect.width()-leftPadding + m_marginTiny + axisWidth,chartMargins.bottom());
titlePadding = chartMargins.top()/2;
break;
}
case Qt::AlignRight: {
QSizeF legendSize = legend->effectiveSizeHint(Qt::PreferredSize,QSizeF(-1,rect.height()));
int rightPadding = m_marginTiny + legendSize.width() + m_marginTiny;
chartMargins = QMargins(chartMargins.left(),chartMargins.top(),rightPadding,chartMargins.bottom());
m_legendMargins = QMargins(rect.width()- rightPadding+ m_marginTiny ,chartMargins.top(),m_marginTiny + m_marginSmall,chartMargins.bottom());
titlePadding = chartMargins.top()/2;
break;
}
default: {
break;
}
}
legend->setGeometry(rect.adjusted(m_legendMargins.left(),m_legendMargins.top(),-m_legendMargins.right(),-m_legendMargins.bottom()));
}
// recalculate title position
if (m_presenter->titleItem()) {
QPointF center = rect.center() - m_presenter->titleItem()->boundingRect().center();
m_presenter->titleItem()->setPos(center.x(),titlePadding);
}
//recalculate background gradient
if (m_presenter->backgroundItem()) {
m_presenter->backgroundItem()->setRect(rect.adjusted(m_marginTiny,m_marginTiny, -m_marginTiny, -m_marginTiny));
}
QRectF chartRect = rect.adjusted(chartMargins.left(),chartMargins.top(),-chartMargins.right(),-chartMargins.bottom());
if(m_presenter->geometry()!=chartRect && chartRect.isValid()){
m_presenter->setGeometry(chartRect);
}else if(chartRect.size().isEmpty()){
m_presenter->setGeometry(QRect(rect.width()/2,rect.height()/2,1,1));
}
}
QSizeF ChartLayout::sizeHint ( Qt::SizeHint which, const QSizeF & constraint) const
{
Q_UNUSED(constraint);
if(which == Qt::MinimumSize)
return QSize(2*(m_chartMargins.top()+m_chartMargins.bottom()),2*(m_chartMargins.top() + m_chartMargins.bottom()));
else
return QSize(-1,-1);
}
void ChartLayout::setMinimumMargins(const QMargins& margins)
{
if(m_chartMargins != margins){
m_chartMargins = margins;
updateGeometry();
}
}
QMargins ChartLayout::minimumMargins() const
{
return m_chartMargins;
}
QTCOMMERCIALCHART_END_NAMESPACE