chartlayout.cpp
258 lines
| 8.3 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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r1965 | #include "charttitle_p.h" | ||
| #include "chartbackground_p.h" | ||||
| #include "legendmarker_p.h" | ||||
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r1883 | #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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r1534 | ChartLayout::ChartLayout(ChartPresenter* presenter): | ||
| m_presenter(presenter), | ||||
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r1965 | m_margins(20,20,20,20), | ||
| m_minChartRect(0,0,200,200) | ||||
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r1534 | { | ||
| } | ||||
| ChartLayout::~ChartLayout() | ||||
| { | ||||
| } | ||||
| void ChartLayout::setGeometry(const QRectF& rect) | ||||
| { | ||||
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r1965 | Q_ASSERT(rect.isValid()); | ||
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r1538 | |||
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r1965 | QList<ChartAxis*> axes = m_presenter->axisItems(); | ||
| ChartTitle* title = m_presenter->titleElement(); | ||||
| QLegend* legend = m_presenter->legend(); | ||||
| ChartBackground* background = m_presenter->backgroundElement(); | ||||
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r1534 | |||
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r1965 | 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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r1965 | if (title && title->isVisible()) { | ||
| contentGeometry = calculateTitleGeometry(contentGeometry,title); | ||||
| } | ||||
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r1534 | |||
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r1965 | if (legend->isAttachedToChart() && legend->isVisible()) { | ||
| contentGeometry = calculateLegendGeometry(contentGeometry,legend); | ||||
| } | ||||
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r1534 | |||
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r1965 | calculateChartGeometry(contentGeometry,axes); | ||
| //TODO remove me | ||||
| #ifdef SHOW_LAYOUT | ||||
| LayoutDebuger* debuger = LayoutDebuger::instance(); | ||||
| debuger->reset(); | ||||
| debuger->setPen(QPen(Qt::red)); | ||||
| debuger->add(backgroundGeometry,m_presenter->rootItem()); | ||||
| debuger->add(titleGeometry,m_presenter->rootItem()); | ||||
| debuger->add(legendGeometry ,m_presenter->rootItem()); | ||||
| debuger->add(axisGeometry ,m_presenter->rootItem()); | ||||
| debuger->add(geometry,m_presenter->rootItem()); | ||||
| foreach(LegendMarker* marker,legend->d_ptr->markers()){ | ||||
| debuger->add(marker->mapRectToScene(marker->boundingRect()),m_presenter->rootItem()); | ||||
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r1534 | } | ||
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r1965 | #endif | ||
| QGraphicsLayout::setGeometry(rect); | ||||
| } | ||||
| QRectF ChartLayout::calculateContentGeometry(const QRectF& geometry) const | ||||
| { | ||||
| return geometry.adjusted(m_margins.left(),m_margins.top(),-m_margins.right(),-m_margins.bottom()); | ||||
| } | ||||
| QRectF ChartLayout::calculateContentMinimum(const QRectF& minimum) const | ||||
| { | ||||
| return minimum.adjusted(0,0,m_margins.left()+m_margins.right(),m_margins.top() + m_margins.bottom()); | ||||
| } | ||||
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r1534 | |||
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r1965 | |||
| QRectF ChartLayout::calculateBackgroundGeometry(const QRectF& geometry,ChartBackground* background) const | ||||
| { | ||||
| qreal left, top, right, bottom; | ||||
| getContentsMargins(&left, &top, &right, &bottom); | ||||
| QRectF backgroundGeometry = geometry.adjusted(left,top,-right,-bottom); | ||||
| if(background) background->setRect(backgroundGeometry); | ||||
| return backgroundGeometry; | ||||
| } | ||||
| QRectF ChartLayout::calculateBackgroundMinimum(const QRectF& minimum) const | ||||
| { | ||||
| qreal left, top, right, bottom; | ||||
| getContentsMargins(&left, &top, &right, &bottom); | ||||
| return minimum.adjusted(0,0,left + right,top+bottom); | ||||
| } | ||||
| QRectF ChartLayout::calculateChartGeometry(const QRectF& geometry, const QList<ChartAxis*>& axes) const | ||||
| { | ||||
| QSizeF vertical(0,0); | ||||
| QSizeF horizontal(0,0); | ||||
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r1534 | |||
| // check axis size | ||||
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r1965 | foreach(ChartAxis* axis , axes) { | ||
| if(axis->orientation()==Qt::Vertical && axis->isVisible()) { | ||||
| vertical = vertical.expandedTo(axis->effectiveSizeHint(Qt::MinimumSize)); | ||||
| } | ||||
| else if(axis->orientation()==Qt::Horizontal && axis->isVisible()) { | ||||
| horizontal = horizontal.expandedTo(axis->effectiveSizeHint(Qt::MinimumSize)); | ||||
| } | ||||
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r1534 | |||
| } | ||||
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r1965 | qreal width = qMin(vertical.width(),geometry.width() * golden_ratio); | ||
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r1837 | |||
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r1965 | QRectF rect = geometry.adjusted(width,vertical.height()/2,-horizontal.width()/2,-horizontal.height()); | ||
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r1534 | |||
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r1965 | m_presenter->setChartsGeometry(rect); | ||
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r1883 | |||
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r1965 | foreach(ChartAxis* axis , axes) { | ||
| axis->setGeometry(geometry); | ||||
| } | ||||
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r1883 | |||
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r1965 | return rect; | ||
| } | ||||
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r1534 | |||
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r1965 | QRectF ChartLayout::calculateAxisMinimum(const QRectF& minimum, const QList<ChartAxis*>& axes) const | ||
| { | ||||
| QSizeF vertical(0,0); | ||||
| QSizeF horizontal(0,0); | ||||
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r1534 | |||
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r1965 | // check axis size | ||
| foreach(ChartAxis* axis , axes) { | ||||
| if(axis->orientation()==Qt::Vertical && axis->isVisible()){ | ||||
| vertical = vertical.expandedTo(axis->effectiveSizeHint(Qt::MinimumSize)); | ||||
| }else if(axis->orientation()==Qt::Horizontal && axis->isVisible()) { | ||||
| horizontal = horizontal.expandedTo(axis->effectiveSizeHint(Qt::MinimumSize)); | ||||
| } | ||||
| } | ||||
| return minimum.adjusted(0,0,horizontal.width()+vertical.width(),horizontal.height() + vertical.height()); | ||||
| } | ||||
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r1534 | |||
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r1965 | QRectF ChartLayout::calculateLegendGeometry(const QRectF& geometry,QLegend* legend) const | ||
| { | ||||
| QSizeF size = legend->effectiveSizeHint(Qt::PreferredSize,QSizeF(-1,-1)); | ||||
| QRectF legendRect; | ||||
| QRectF result; | ||||
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r1883 | |||
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r1965 | switch (legend->alignment()) { | ||
| case Qt::AlignTop: { | ||||
| legendRect = QRectF(geometry.topLeft(),QSizeF(geometry.width(),size.height())); | ||||
| result = geometry.adjusted(0,legendRect.height(),0,0); | ||||
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r1534 | break; | ||
| } | ||||
| case Qt::AlignBottom: { | ||||
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r1965 | 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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r1534 | break; | ||
| } | ||||
| case Qt::AlignLeft: { | ||||
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r1965 | 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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r1534 | break; | ||
| } | ||||
| case Qt::AlignRight: { | ||||
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r1965 | 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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r1534 | break; | ||
| } | ||||
| default: { | ||||
| break; | ||||
| } | ||||
| } | ||||
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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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r1965 | 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()); | ||||
| } | ||||
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r1534 | |||
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r1965 | QRectF ChartLayout::calculateTitleGeometry(const QRectF& geometry,ChartTitle* title) const | ||
| { | ||||
| title->setGeometry(geometry); | ||||
| QPointF center = geometry.center() - title->boundingRect().center(); | ||||
| 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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r1965 | QRectF ChartLayout::calculateTitleMinimum(const QRectF& minimum,ChartTitle* title) const | ||
| { | ||||
| QSizeF min = title->sizeHint(Qt::MinimumSize); | ||||
| return minimum.adjusted(0,0,min.width(),min.height()); | ||||
| } | ||||
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r1534 | |||
| QSizeF ChartLayout::sizeHint ( Qt::SizeHint which, const QSizeF & constraint) const | ||||
| { | ||||
| Q_UNUSED(constraint); | ||||
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r1965 | 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); | ||||
| minimumRect = calculateBackgroundMinimum(minimumRect); | ||||
| minimumRect = calculateContentMinimum(minimumRect); | ||||
| minimumRect = calculateTitleMinimum(minimumRect,title); | ||||
| minimumRect = calculateLegendMinimum(minimumRect,legend); | ||||
| minimumRect = calculateAxisMinimum(minimumRect,axes); | ||||
| return minimumRect.united(m_minChartRect).size().toSize(); | ||||
| }else | ||||
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r1534 | return QSize(-1,-1); | ||
| } | ||||
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r1965 | void ChartLayout::setMargins(const QMargins& margins) | ||
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r1534 | { | ||
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r1883 | |||
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r1965 | if(m_margins != margins){ | ||
| m_margins = margins; | ||||
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r1534 | updateGeometry(); | ||
| } | ||||
| } | ||||
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r1965 | QMargins ChartLayout::margins() const | ||
| { | ||||
| return m_margins; | ||||
| } | ||||
| void ChartLayout::adjustChartGeometry() | ||||
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r1534 | { | ||
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r1965 | setGeometry(geometry()); | ||
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r1534 | } | ||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||