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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "chartlayout_p.h"
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#include "chartpresenter_p.h"
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#include "qlegend_p.h"
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#include "chartaxis_p.h"
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#include <QDebug>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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ChartLayout::ChartLayout(ChartPresenter* presenter):
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m_presenter(presenter),
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m_marginBig(60),
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m_marginSmall(20),
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m_marginTiny(10),
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m_chartMargins(m_marginBig,m_marginBig,m_marginBig,m_marginBig),
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m_intialized(false)
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{
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}
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ChartLayout::~ChartLayout()
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{
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}
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void ChartLayout::setGeometry(const QRectF& rect)
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{
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if (!rect.isValid()) return;
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QGraphicsLayout::setGeometry(rect);
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if(!m_intialized){
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m_presenter->setGeometry(rect);
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m_intialized=true;
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}
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// check title size
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QSize titleSize = QSize(0,0);
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if (m_presenter->titleItem()) {
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titleSize= m_presenter->titleItem()->boundingRect().size().toSize();
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}
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qreal axisHeight = 0;
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qreal axisWidth = 0;
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// check axis size
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foreach (ChartAxis* axis,m_presenter->axisItems()){
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if(axis->axisType() == ChartAxis::X_AXIS)
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axisHeight = qMax(axis->minimumHeight(),axisHeight);
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else
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axisWidth = qMax(axis->minimumWidth(),axisWidth);
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}
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QLegend* legend = m_presenter->legend();
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Q_ASSERT(legend);
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qreal titlePadding = m_chartMargins.top()/2;
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QMargins chartMargins = m_chartMargins;
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//TODO multiple axis handling;
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chartMargins.setLeft(qMax(m_chartMargins.left(),int(axisWidth + 2*m_marginTiny)));
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chartMargins.setBottom(qMax(m_chartMargins.bottom(),int(axisHeight + 2* m_marginTiny)));
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// recalculate legend position
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if ((legend->isAttachedToChart() && legend->isVisible())) {
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// Reserve some space for legend
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switch (legend->alignment()) {
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case Qt::AlignTop: {
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QSizeF legendSize = legend->effectiveSizeHint(Qt::PreferredSize,QSizeF(rect.width(),-1));
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int topMargin = 2*m_marginTiny + titleSize.height() + legendSize.height() + m_marginTiny;
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chartMargins = QMargins(chartMargins.left(),topMargin,chartMargins.right(),chartMargins.bottom());
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m_legendMargins = QMargins(chartMargins.left(),topMargin - (legendSize.height() + m_marginTiny),chartMargins.right(),rect.height()-topMargin + m_marginTiny);
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titlePadding = m_marginTiny + m_marginTiny;
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break;
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}
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case Qt::AlignBottom: {
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QSizeF legendSize = legend->effectiveSizeHint(Qt::PreferredSize,QSizeF(rect.width(),-1));
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int bottomMargin = m_marginTiny + legendSize.height() + m_marginTiny + axisHeight;
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chartMargins = QMargins(chartMargins.left(),chartMargins.top(),chartMargins.right(),bottomMargin);
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m_legendMargins = QMargins(chartMargins.left(),rect.height()-bottomMargin + m_marginTiny + axisHeight,chartMargins.right(),m_marginTiny + m_marginSmall);
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titlePadding = chartMargins.top()/2;
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break;
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}
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case Qt::AlignLeft: {
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QSizeF legendSize = legend->effectiveSizeHint(Qt::PreferredSize,QSizeF(-1,rect.height()));
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int leftPadding = m_marginTiny + legendSize.width() + m_marginTiny + axisWidth;
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chartMargins = QMargins(leftPadding,chartMargins.top(),chartMargins.right(),chartMargins.bottom());
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m_legendMargins = QMargins(m_marginTiny + m_marginSmall,chartMargins.top(),rect.width()-leftPadding + m_marginTiny + axisWidth,chartMargins.bottom());
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titlePadding = chartMargins.top()/2;
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break;
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}
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case Qt::AlignRight: {
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QSizeF legendSize = legend->effectiveSizeHint(Qt::PreferredSize,QSizeF(-1,rect.height()));
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int rightPadding = m_marginTiny + legendSize.width() + m_marginTiny;
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chartMargins = QMargins(chartMargins.left(),chartMargins.top(),rightPadding,chartMargins.bottom());
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m_legendMargins = QMargins(rect.width()- rightPadding+ m_marginTiny ,chartMargins.top(),m_marginTiny + m_marginSmall,chartMargins.bottom());
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titlePadding = chartMargins.top()/2;
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break;
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}
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default: {
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break;
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}
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}
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legend->setGeometry(rect.adjusted(m_legendMargins.left(),m_legendMargins.top(),-m_legendMargins.right(),-m_legendMargins.bottom()));
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}
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// recalculate title position
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if (m_presenter->titleItem()) {
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QPointF center = rect.center() - m_presenter->titleItem()->boundingRect().center();
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m_presenter->titleItem()->setPos(center.x(),titlePadding);
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}
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//recalculate background gradient
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if (m_presenter->backgroundItem()) {
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m_presenter->backgroundItem()->setRect(rect.adjusted(m_marginTiny,m_marginTiny, -m_marginTiny, -m_marginTiny));
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}
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QRectF chartRect = rect.adjusted(chartMargins.left(),chartMargins.top(),-chartMargins.right(),-chartMargins.bottom());
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if(m_presenter->geometry()!=chartRect && chartRect.isValid()){
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m_presenter->setGeometry(chartRect);
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}else if(chartRect.size().isEmpty()){
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m_presenter->setGeometry(QRect(rect.width()/2,rect.height()/2,1,1));
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}
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}
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QSizeF ChartLayout::sizeHint ( Qt::SizeHint which, const QSizeF & constraint) const
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{
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Q_UNUSED(constraint);
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if(which == Qt::MinimumSize)
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return QSize(2*(m_chartMargins.top()+m_chartMargins.bottom()),2*(m_chartMargins.top() + m_chartMargins.bottom()));
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else
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return QSize(-1,-1);
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}
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void ChartLayout::setMinimumMargins(const QMargins& margins)
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{
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if(m_chartMargins != margins){
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m_chartMargins = margins;
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updateGeometry();
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}
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}
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QMargins ChartLayout::minimumMargins() const
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{
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return m_chartMargins;
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}
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QTCOMMERCIALCHART_END_NAMESPACE
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