chartlayout.cpp
335 lines
| 10.8 KiB
| text/x-c
|
CppLexer
/ src / chartlayout.cpp
Michal Klocek
|
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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r1965 | #include "charttitle_p.h" | ||
| #include "chartbackground_p.h" | ||||
| #include "legendmarker_p.h" | ||||
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r2105 | #include <QDebug> | ||
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r1535 | |||
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r1534 | QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||
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r1965 | static const qreal golden_ratio = 0.25; | ||
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r2105 | ChartLayout::ChartLayout(ChartPresenter* presenter): | ||
| m_presenter(presenter), | ||||
| m_margins(20,20,20,20), | ||||
| m_minChartRect(0,0,200,200) | ||||
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r1534 | { | ||
| } | ||||
| ChartLayout::~ChartLayout() | ||||
| { | ||||
| } | ||||
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r2105 | void ChartLayout::setGeometry(const QRectF& rect) | ||
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r1534 | { | ||
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r2056 | if (!rect.isValid()) | ||
| return; | ||||
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r1538 | |||
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r2105 | QList<ChartAxis*> axes = m_presenter->axisItems(); | ||
| QList<ChartElement*> charts = m_presenter->chartItems(); | ||||
| ChartTitle* title = m_presenter->titleElement(); | ||||
| QLegend* legend = m_presenter->legend(); | ||||
| ChartBackground* background = m_presenter->backgroundElement(); | ||||
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r1534 | |||
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r2105 | QRectF contentGeometry = calculateBackgroundGeometry(rect,background); | ||
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r1534 | |||
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r1965 | contentGeometry = calculateContentGeometry(contentGeometry); | ||
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r1837 | |||
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r2105 | if (title && title->isVisible()) { | ||
| contentGeometry = calculateTitleGeometry(contentGeometry,title); | ||||
| } | ||||
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r1534 | |||
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r2105 | if (legend->isAttachedToChart() && legend->isVisible()) { | ||
| contentGeometry = calculateLegendGeometry(contentGeometry,legend); | ||||
| } | ||||
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r1534 | |||
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r2105 | contentGeometry = calculateAxisGeometry(contentGeometry,axes); | ||
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r1965 | |||
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r2105 | m_chartsRect = calculateChartsGeometry(contentGeometry,charts); | ||
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r1965 | |||
| QGraphicsLayout::setGeometry(rect); | ||||
| } | ||||
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r2105 | QRectF ChartLayout::calculateContentGeometry(const QRectF& geometry) const | ||
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r1965 | { | ||
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r2105 | return geometry.adjusted(m_margins.left(),m_margins.top(),-m_margins.right(),-m_margins.bottom()); | ||
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r1965 | } | ||
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r2105 | QRectF ChartLayout::calculateContentMinimum(const QRectF& minimum) const | ||
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r1965 | { | ||
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r2105 | return minimum.adjusted(0,0,m_margins.left()+m_margins.right(),m_margins.top() + m_margins.bottom()); | ||
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r1965 | } | ||
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r1534 | |||
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r1965 | |||
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r2105 | QRectF ChartLayout::calculateBackgroundGeometry(const QRectF& geometry,ChartBackground* background) const | ||
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r1965 | { | ||
| qreal left, top, right, bottom; | ||||
| getContentsMargins(&left, &top, &right, &bottom); | ||||
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r2105 | QRectF backgroundGeometry = geometry.adjusted(left,top,-right,-bottom); | ||
| if(background) background->setRect(backgroundGeometry); | ||||
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r1965 | return backgroundGeometry; | ||
| } | ||||
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r2105 | QRectF ChartLayout::calculateBackgroundMinimum(const QRectF& minimum) const | ||
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r1965 | { | ||
| qreal left, top, right, bottom; | ||||
| getContentsMargins(&left, &top, &right, &bottom); | ||||
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r2105 | return minimum.adjusted(0,0,left + right,top+bottom); | ||
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r1965 | } | ||
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r2105 | |||
| QRectF ChartLayout::calculateAxisGeometry(const QRectF& geometry, const QList<ChartAxis*>& axes) const | ||||
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r1965 | { | ||
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r2105 | QSizeF left; | ||
| QSizeF right; | ||||
| QSizeF bottom; | ||||
| QSizeF top; | ||||
| int leftCount = 0; | ||||
| int rightCount = 0; | ||||
| int topCount = 0; | ||||
| int bottomCount = 0; | ||||
| foreach(ChartAxis* axis , axes) { | ||||
| if(!axis->isVisible()) continue; | ||||
| QSizeF size = axis->effectiveSizeHint(Qt::MinimumSize); | ||||
| switch(axis->alignment()){ | ||||
| case Qt::AlignLeft: | ||||
| left.setWidth(left.width()+size.width()); | ||||
| left.setHeight(qMax(left.height(),size.height())); | ||||
| leftCount++; | ||||
| break; | ||||
| case Qt::AlignRight: | ||||
| right.setWidth(right.width()+size.width()); | ||||
| right.setHeight(qMax(right.height(),size.height())); | ||||
| rightCount++; | ||||
| break; | ||||
| case Qt::AlignTop: | ||||
| top.setWidth(qMax(top.width(),size.width())); | ||||
| top.setHeight(top.height()+size.height()); | ||||
| topCount++; | ||||
| break; | ||||
| case Qt::AlignBottom: | ||||
| bottom.setWidth(qMax(bottom.width(),size.width())); | ||||
| bottom.setHeight(bottom.height() + size.height()); | ||||
| bottomCount++; | ||||
| break; | ||||
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r1965 | } | ||
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r1534 | } | ||
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r2105 | left.setWidth(qMax(qMax(top.width()/2,bottom.width()/2),left.width())); | ||
| left.setWidth(qMin(left.width(),golden_ratio*geometry.width())); | ||||
| right.setWidth(qMax(qMax(top.width()/2,bottom.width()/2),right.width())); | ||||
| right.setWidth(qMin(right.width(),golden_ratio*geometry.width())); | ||||
| top.setHeight(qMax(qMax(left.height()/2,right.height()/2),top.height())); | ||||
| bottom.setHeight(qMax(qMax(left.height()/2,right.height()/2),bottom.height())); | ||||
| QRectF chartRect = geometry.adjusted(left.width(),top.height(),-right.width(),-bottom.height()); | ||||
| qreal leftOffset=0; | ||||
| qreal rightOffset=0; | ||||
| qreal topOffset=0; | ||||
| qreal bottomOffset=0; | ||||
| foreach(ChartAxis* axis , axes) { | ||||
| if(!axis->isVisible()) continue; | ||||
| QSizeF size = axis->effectiveSizeHint(Qt::MinimumSize); | ||||
| switch(axis->alignment()){ | ||||
| case Qt::AlignLeft:{ | ||||
| qreal width = qMin(size.width(),left.width()/leftCount); | ||||
| leftOffset+=width; | ||||
| axis->setGeometry(QRect(chartRect.left()-leftOffset,chartRect.top()-(size.height()+1)/2,width,chartRect.height()+size.height()+2),chartRect); | ||||
| break; | ||||
| } | ||||
| case Qt::AlignRight:{ | ||||
| qreal width = qMin(size.width(),right.width()/rightCount); | ||||
| axis->setGeometry(QRect(chartRect.right()+rightOffset,chartRect.top()-(size.height()+1)/2,width,chartRect.height()+size.height()+2),chartRect); | ||||
| rightOffset+=width; | ||||
| break; | ||||
| } | ||||
| case Qt::AlignTop: | ||||
| axis->setGeometry(QRect(geometry.left(),chartRect.top()-topOffset - size.height(),geometry.width(),size.height()),chartRect); | ||||
| topOffset+=size.height(); | ||||
| break; | ||||
| case Qt::AlignBottom: | ||||
| axis->setGeometry(QRect(geometry.left(),chartRect.bottom()+bottomOffset,geometry.width(),size.height()),chartRect); | ||||
| bottomOffset+=size.height(); | ||||
| break; | ||||
Marek Rosa
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r2093 | } | ||
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r1965 | } | ||
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r1883 | |||
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r2105 | return chartRect; | ||
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r1965 | } | ||
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r1534 | |||
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r2105 | QRectF ChartLayout::calculateAxisMinimum(const QRectF& minimum, const QList<ChartAxis*>& axes) const | ||
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r1965 | { | ||
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r2105 | QSizeF left; | ||
| QSizeF right; | ||||
| QSizeF bottom; | ||||
| QSizeF top; | ||||
| foreach(ChartAxis* axis , axes) { | ||||
| QSizeF size = axis->effectiveSizeHint(Qt::MinimumSize); | ||||
| if(!axis->isVisible()) continue; | ||||
| switch(axis->alignment()) { | ||||
| case Qt::AlignLeft: | ||||
| left.setWidth(left.width()+size.width()); | ||||
| left.setHeight(qMax(left.height()*2,size.height())); | ||||
| break; | ||||
| case Qt::AlignRight: | ||||
| right.setWidth(right.width()+size.width()); | ||||
| right.setHeight(qMax(right.height()*2,size.height())); | ||||
| break; | ||||
| case Qt::AlignTop: | ||||
| top.setWidth(qMax(top.width(),size.width())); | ||||
| top.setHeight(top.height()+size.height()); | ||||
| break; | ||||
| case Qt::AlignBottom: | ||||
| bottom.setWidth(qMax(bottom.width(),size.width())); | ||||
| bottom.setHeight(bottom.height() + size.height()); | ||||
| break; | ||||
| } | ||||
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r1965 | } | ||
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r2105 | return minimum.adjusted(0,0,left.width() + right.width() + qMax(top.width(),bottom.width()), top.height() + bottom.height() + qMax(left.height(),right.height())); | ||
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r1965 | } | ||
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r1534 | |||
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r2105 | QRectF ChartLayout::calculateLegendGeometry(const QRectF& geometry,QLegend* legend) const | ||
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r1965 | { | ||
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r2105 | QSizeF size = legend->effectiveSizeHint(Qt::PreferredSize,QSizeF(-1,-1)); | ||
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r1965 | QRectF legendRect; | ||
| QRectF result; | ||||
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r1883 | |||
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r1965 | switch (legend->alignment()) { | ||
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r2105 | case Qt::AlignTop: { | ||
| legendRect = QRectF(geometry.topLeft(),QSizeF(geometry.width(),size.height())); | ||||
| result = geometry.adjusted(0,legendRect.height(),0,0); | ||||
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Marek Rosa
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r2093 | break; | ||
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r2105 | } | ||
| case Qt::AlignBottom: { | ||||
| legendRect = QRectF(QPointF(geometry.left(),geometry.bottom()-size.height()),QSizeF(geometry.width(),size.height())); | ||||
| result = geometry.adjusted(0,0,0,-legendRect.height()); | ||||
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r2093 | break; | ||
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r2105 | } | ||
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r2093 | case Qt::AlignLeft: { | ||
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r2105 | qreal width = qMin(size.width(),geometry.width()*golden_ratio); | ||
| legendRect = QRectF(geometry.topLeft(),QSizeF(width,geometry.height())); | ||||
| result = geometry.adjusted(width,0,0,0); | ||||
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r2093 | break; | ||
| } | ||||
| case Qt::AlignRight: { | ||||
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r2105 | qreal width = qMin(size.width(),geometry.width()*golden_ratio); | ||
| legendRect = QRectF(QPointF(geometry.right()-width,geometry.top()),QSizeF(width,geometry.height())); | ||||
| result = geometry.adjusted(0,0,-width,0); | ||||
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r2093 | break; | ||
| } | ||||
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r2105 | default: { | ||
| legendRect = QRectF(0,0,0,0); | ||||
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r2093 | result = geometry; | ||
| break; | ||||
| } | ||||
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r2105 | } | ||
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r1534 | |||
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r1965 | legend->setGeometry(legendRect); | ||
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r1534 | |||
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r1965 | return result; | ||
| } | ||||
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r1534 | |||
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r2105 | |||
| QRectF ChartLayout::calculateChartsGeometry(const QRectF& geometry, const QList<ChartElement*>& charts) const | ||||
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r1965 | { | ||
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r2105 | Q_ASSERT(geometry.isValid()); | ||
| foreach(ChartElement* chart, charts) | ||||
| { | ||||
| chart->handleGeometryChanged(geometry); | ||||
| } | ||||
| return geometry; | ||||
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r1965 | } | ||
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r1534 | |||
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r2105 | QRectF ChartLayout::calculateLegendMinimum(const QRectF& geometry,QLegend* legend) const | ||
| { | ||||
| QSizeF minSize = legend->effectiveSizeHint(Qt::MinimumSize,QSizeF(-1,-1)); | ||||
| return geometry.adjusted(0,0,minSize.width(),minSize.height()); | ||||
| } | ||||
| QRectF ChartLayout::calculateTitleGeometry(const QRectF& geometry,ChartTitle* title) const | ||||
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r1965 | { | ||
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r2093 | title->setGeometry(geometry); | ||
| QPointF center = geometry.center() - title->boundingRect().center(); | ||||
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r2105 | title->setPos(center.x(),title->pos().y()); | ||
| return geometry.adjusted(0,title->boundingRect().height(),0,0); | ||||
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r1534 | } | ||
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r2105 | QRectF ChartLayout::calculateTitleMinimum(const QRectF& minimum,ChartTitle* title) const | ||
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r1965 | { | ||
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r2093 | QSizeF min = title->sizeHint(Qt::MinimumSize); | ||
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r2105 | return minimum.adjusted(0,0,min.width(),min.height()); | ||
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r1965 | } | ||
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r1534 | |||
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r2105 | QSizeF ChartLayout::sizeHint ( Qt::SizeHint which, const QSizeF & constraint) const | ||
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r1534 | { | ||
| Q_UNUSED(constraint); | ||||
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r2105 | if(which == Qt::MinimumSize){ | ||
| QList<ChartAxis*> axes = m_presenter->axisItems(); | ||||
| ChartTitle* title = m_presenter->titleElement(); | ||||
| QLegend* legend = m_presenter->legend(); | ||||
| QRectF minimumRect(0,0,0,0); | ||||
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r1965 | minimumRect = calculateBackgroundMinimum(minimumRect); | ||
| minimumRect = calculateContentMinimum(minimumRect); | ||||
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r2105 | minimumRect = calculateTitleMinimum(minimumRect,title); | ||
| minimumRect = calculateLegendMinimum(minimumRect,legend); | ||||
| minimumRect = calculateAxisMinimum(minimumRect,axes); | ||||
| return minimumRect.united(m_minChartRect).size().toSize(); | ||||
| }else | ||||
| return QSize(-1,-1); | ||||
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r1534 | } | ||
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r2105 | void ChartLayout::setMargins(const QMargins& margins) | ||
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r1534 | { | ||
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r2105 | if(m_margins != margins){ | ||
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r1965 | m_margins = margins; | ||
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r1534 | updateGeometry(); | ||
| } | ||||
| } | ||||
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r1965 | QMargins ChartLayout::margins() const | ||
| { | ||||
| return m_margins; | ||||
| } | ||||
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r1534 | QTCOMMERCIALCHART_END_NAMESPACE | ||