chartlayout.cpp
180 lines
| 6.2 KiB
| text/x-c
|
CppLexer
/ src / chartlayout.cpp
Michal Klocek
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r1535 | /**************************************************************************** | ||
| ** | ||||
| ** 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 | ||||
| ** $QT_END_LICENSE$ | ||||
| ** | ||||
| ****************************************************************************/ | ||||
|
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r1534 | #include "chartlayout_p.h" | ||
| #include "chartpresenter_p.h" | ||||
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r1837 | #include "qlegend_p.h" | ||
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r1534 | #include "chartaxis_p.h" | ||
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r1883 | #include <QDebug> | ||
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r1535 | |||
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r1534 | QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||
| ChartLayout::ChartLayout(ChartPresenter* presenter): | ||||
| m_presenter(presenter), | ||||
| m_marginBig(60), | ||||
| m_marginSmall(20), | ||||
| m_marginTiny(10), | ||||
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r1883 | m_chartMargins(m_marginBig,m_marginBig,m_marginBig,m_marginBig), | ||
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r1837 | m_intialized(false) | ||
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r1534 | { | ||
| } | ||||
| ChartLayout::~ChartLayout() | ||||
| { | ||||
| } | ||||
| void ChartLayout::setGeometry(const QRectF& rect) | ||||
| { | ||||
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r1538 | |||
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r1534 | if (!rect.isValid()) return; | ||
| QGraphicsLayout::setGeometry(rect); | ||||
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r1837 | if(!m_intialized){ | ||
| m_presenter->setGeometry(rect); | ||||
| m_intialized=true; | ||||
| } | ||||
|
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r1534 | // 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(); | ||||
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r1837 | Q_ASSERT(legend); | ||
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r1534 | qreal titlePadding = m_chartMargins.top()/2; | ||
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r1883 | 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))); | ||||
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r1534 | |||
| // recalculate legend position | ||||
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r1837 | if ((legend->isAttachedToChart() && legend->isVisible())) { | ||
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r1534 | |||
| // Reserve some space for legend | ||||
| switch (legend->alignment()) { | ||||
| case Qt::AlignTop: { | ||||
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r1883 | |||
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r1534 | QSizeF legendSize = legend->effectiveSizeHint(Qt::PreferredSize,QSizeF(rect.width(),-1)); | ||
| int topMargin = 2*m_marginTiny + titleSize.height() + legendSize.height() + m_marginTiny; | ||||
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r1883 | 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); | ||||
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r1534 | titlePadding = m_marginTiny + m_marginTiny; | ||
| break; | ||||
| } | ||||
| case Qt::AlignBottom: { | ||||
| QSizeF legendSize = legend->effectiveSizeHint(Qt::PreferredSize,QSizeF(rect.width(),-1)); | ||||
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r1837 | int bottomMargin = m_marginTiny + legendSize.height() + m_marginTiny + axisHeight; | ||
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r1883 | 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); | ||||
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r1534 | titlePadding = chartMargins.top()/2; | ||
| break; | ||||
| } | ||||
| case Qt::AlignLeft: { | ||||
| QSizeF legendSize = legend->effectiveSizeHint(Qt::PreferredSize,QSizeF(-1,rect.height())); | ||||
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r1837 | int leftPadding = m_marginTiny + legendSize.width() + m_marginTiny + axisWidth; | ||
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r1883 | 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()); | ||||
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r1534 | titlePadding = chartMargins.top()/2; | ||
| break; | ||||
| } | ||||
| case Qt::AlignRight: { | ||||
| QSizeF legendSize = legend->effectiveSizeHint(Qt::PreferredSize,QSizeF(-1,rect.height())); | ||||
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r1837 | int rightPadding = m_marginTiny + legendSize.width() + m_marginTiny; | ||
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r1883 | 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()); | ||||
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r1534 | 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); | ||||
| } | ||||
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r1883 | void ChartLayout::setMinimumMargins(const QMargins& margins) | ||
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r1534 | { | ||
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r1883 | |||
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r1534 | if(m_chartMargins != margins){ | ||
| m_chartMargins = margins; | ||||
| updateGeometry(); | ||||
| } | ||||
| } | ||||
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r1883 | QMargins ChartLayout::minimumMargins() const | ||
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r1534 | { | ||
| return m_chartMargins; | ||||
| } | ||||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||