verticalaxis.cpp
146 lines
| 5.4 KiB
| text/x-c
|
CppLexer
Michal Klocek
|
r2111 | /**************************************************************************** | ||
| ** | ||||
| ** 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 "verticalaxis_p.h" | ||||
| #include "qabstractaxis.h" | ||||
| #include <QFontMetrics> | ||||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
|
Michal Klocek
|
r2118 | VerticalAxis::VerticalAxis(QAbstractAxis *axis, ChartPresenter *presenter, bool intervalAxis):ChartAxis(axis,presenter,intervalAxis) | ||
|
Michal Klocek
|
r2111 | { | ||
| } | ||||
| VerticalAxis::~VerticalAxis() | ||||
| { | ||||
| } | ||||
| void VerticalAxis::updateGeometry() | ||||
| { | ||||
| const QVector<qreal> &layout = ChartAxis::layout(); | ||||
| if(layout.isEmpty()) return; | ||||
| QStringList labelList = labels(); | ||||
| QList<QGraphicsItem *> lines = lineItems(); | ||||
| QList<QGraphicsItem *> labels = labelItems(); | ||||
| QList<QGraphicsItem *> shades = shadeItems(); | ||||
| QList<QGraphicsItem *> axis = arrowItems(); | ||||
| Q_ASSERT(labels.size() == labelList.size()); | ||||
| Q_ASSERT(layout.size() == labelList.size()); | ||||
| const QRectF& axisRect = axisGeometry(); | ||||
| const QRectF& gridRect = gridGeometry(); | ||||
| qreal height = axisRect.bottom(); | ||||
| QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0)); | ||||
| if (alignment()==Qt::AlignLeft) | ||||
| lineItem->setLine( axisRect.right() , gridRect.top(), axisRect.right(), gridRect.bottom()); | ||||
| else if(alignment()==Qt::AlignRight) | ||||
| lineItem->setLine( axisRect.left() , gridRect.top(), axisRect.left(), gridRect.bottom()); | ||||
| QFontMetrics fn(font()); | ||||
| for (int i = 0; i < layout.size(); ++i) { | ||||
| QGraphicsLineItem *gridItem = static_cast<QGraphicsLineItem*>(lines.at(i)); | ||||
| QGraphicsLineItem *tickItem = static_cast<QGraphicsLineItem*>(axis.at(i+1)); | ||||
| QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem*>(labels.at(i)); | ||||
| //grid line | ||||
| gridItem->setLine( gridRect.left() , layout[i], gridRect.right(), layout[i]); | ||||
| //label text | ||||
| QString text = labelList.at(i); | ||||
| if (fn.boundingRect(text).width() > axisRect.right() - axisRect.left() - labelPadding() ) | ||||
| { | ||||
| QString label = text + "..."; | ||||
| while (fn.boundingRect(label).width() > axisRect.right() - axisRect.left() - labelPadding() && label.length() > 3) | ||||
| label.remove(label.length() - 4, 1); | ||||
| labelItem->setText(label); | ||||
| } | ||||
| else { | ||||
| labelItem->setText(text); | ||||
| } | ||||
| const QRectF& rect = labelItem->boundingRect(); | ||||
| QPointF center = rect.center(); | ||||
| labelItem->setTransformOriginPoint(center.x(), center.y()); | ||||
| //ticks and label position | ||||
| if (alignment()==Qt::AlignLeft) { | ||||
| labelItem->setPos( axisRect.right() - rect.width() - labelPadding() , layout[i]-center.y()); | ||||
| tickItem->setLine( axisRect.right()- labelPadding(),layout[i], axisRect.right(),layout[i]); | ||||
| } | ||||
| else if(alignment()==Qt::AlignRight) { | ||||
| labelItem->setPos( axisRect.left() + labelPadding() , layout[i]-center.y()); | ||||
| tickItem->setLine( axisRect.left(),layout[i], axisRect.left()+ labelPadding(),layout[i]); | ||||
| } | ||||
|
Michal Klocek
|
r2118 | if(intervalAxis()&& i+1!=layout.size()) { | ||
|
Michal Klocek
|
r2111 | const qreal delta = (layout[i+1] - layout[i])/2; | ||
| labelItem->setPos(labelItem->pos().x() , layout[i] + delta - center.y()); | ||||
| } | ||||
| //overlap detection | ||||
| if(labelItem->pos().y() + rect.height() > height || | ||||
| labelItem->pos().y() + rect.height() > axisRect.bottom() || | ||||
| labelItem->pos().y() < axisRect.top()) { | ||||
| labelItem->setVisible(false); | ||||
| gridItem->setVisible(false); | ||||
| tickItem->setVisible(false); | ||||
| } | ||||
| else { | ||||
| labelItem->setVisible(true); | ||||
| gridItem->setVisible(true); | ||||
| height=labelItem->pos().y(); | ||||
| } | ||||
| //shades | ||||
| if ((i+1)%2 && i>1) { | ||||
| QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem*>(shades.at(i/2-1)); | ||||
| rectItem->setRect( gridRect.left(),layout[i], gridRect.width(),layout[i-1]-layout[i]); | ||||
| } | ||||
| // check if the grid line and the axis tick should be shown | ||||
| qreal y = gridItem->line().p1().y(); | ||||
| if (y < gridRect.top() || y > gridRect.bottom()) { | ||||
| gridItem->setVisible(false); | ||||
| tickItem->setVisible(false); | ||||
|
Michal Klocek
|
r2118 | if( intervalAxis() && ( labelItem->pos().y() < gridRect.top() || labelItem->pos().y() + rect.height() > gridRect.bottom())) | ||
|
Michal Klocek
|
r2111 | labelItem->setVisible(false); | ||
| } | ||||
| } | ||||
| //begin/end grid line in case labels between | ||||
|
Michal Klocek
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r2118 | if(intervalAxis()) { | ||
|
Michal Klocek
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r2111 | QGraphicsLineItem *gridLine; | ||
| gridLine = static_cast<QGraphicsLineItem*>(lines.at(layout.size())); | ||||
| gridLine->setLine(gridRect.left(), gridRect.top(), gridRect.right(), gridRect.top()); | ||||
| gridLine = static_cast<QGraphicsLineItem*>(lines.at(layout.size()+1)); | ||||
| gridLine->setLine(gridRect.left(), gridRect.bottom(), gridRect.right(), gridRect.bottom()); | ||||
| } | ||||
| } | ||||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||