chartvalueaxisx.cpp
169 lines
| 5.8 KiB
| text/x-c
|
CppLexer
Marek Rosa
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r1555 | /**************************************************************************** | ||
| ** | ||||
| ** 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 | ||||
| ** $QT_END_LICENSE$ | ||||
| ** | ||||
| ****************************************************************************/ | ||||
|
Marek Rosa
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r1805 | #include "chartvalueaxisx_p.h" | ||
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r1555 | #include "qabstractaxis.h" | ||
| #include "chartpresenter_p.h" | ||||
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r1805 | #include "qvalueaxis.h" | ||
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r1555 | #include <QGraphicsLayout> | ||
| #include <QFontMetrics> | ||||
Michal Klocek
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r1735 | #include <qmath.h> | ||
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r1555 | |||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
|
Michal Klocek
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r2105 | ChartValueAxisX::ChartValueAxisX(QAbstractAxis *axis,ChartPresenter *presenter) : ChartAxis(axis,presenter), | ||
| m_tickCount(0) | ||||
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r1555 | { | ||
| } | ||||
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r1805 | ChartValueAxisX::~ChartValueAxisX() | ||
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r1555 | { | ||
| } | ||||
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r1805 | QVector<qreal> ChartValueAxisX::calculateLayout() const | ||
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r1555 | { | ||
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Michal Klocek
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r2105 | Q_ASSERT(m_tickCount>=2); | ||
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r1555 | |||
| QVector<qreal> points; | ||||
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r1698 | points.resize(m_tickCount); | ||
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r1555 | |||
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r2105 | const qreal deltaX = m_gridRect.width()/(m_tickCount-1); | ||
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r1698 | for (int i = 0; i < m_tickCount; ++i) { | ||
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r2105 | int x = i * deltaX + m_gridRect.left(); | ||
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Marek Rosa
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r1555 | points[i] = x; | ||
| } | ||||
| return points; | ||||
| } | ||||
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r1805 | void ChartValueAxisX::updateGeometry() | ||
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r1555 | { | ||
| const QVector<qreal>& layout = ChartAxis::layout(); | ||||
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r2105 | if(layout.isEmpty()) return; | ||
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r1555 | |||
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r2105 | QStringList ticksList = createNumberLabels(m_min,m_max,layout.size()); | ||
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r1555 | |||
| QList<QGraphicsItem *> lines = m_grid->childItems(); | ||||
| QList<QGraphicsItem *> labels = m_labels->childItems(); | ||||
| QList<QGraphicsItem *> shades = m_shades->childItems(); | ||||
|
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r1729 | QList<QGraphicsItem *> axis = m_arrow->childItems(); | ||
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r1555 | |||
| Q_ASSERT(labels.size() == ticksList.size()); | ||||
| Q_ASSERT(layout.size() == ticksList.size()); | ||||
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r2105 | QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0)); | ||
| //lineItem->setLine(m_gridRect.left(), m_gridRect.bottom(), m_gridRect.right(), m_gridRect.bottom()); | ||||
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Michal Klocek
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r1965 | |||
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Michal Klocek
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r2105 | if (m_chartAxis->alignment()==Qt::AlignTop) | ||
| lineItem->setLine(m_gridRect.left(), m_axisRect.bottom(), m_gridRect.right(), m_axisRect.bottom()); | ||||
| else if(m_chartAxis->alignment()==Qt::AlignBottom) | ||||
| lineItem->setLine(m_gridRect.left(), m_axisRect.top(), m_gridRect.right(), m_axisRect.top()); | ||||
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r1555 | |||
| qreal width = 0; | ||||
| for (int i = 0; i < layout.size(); ++i) { | ||||
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r2105 | QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i)); | ||
| lineItem->setLine(layout[i], m_gridRect.top(), layout[i], m_gridRect.bottom()); | ||||
| QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem*>(labels.at(i)); | ||||
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r2093 | labelItem->setText(ticksList.at(i)); | ||
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r2105 | const QRectF& rect = labelItem->boundingRect(); | ||
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r2093 | QPointF center = rect.center(); | ||
| labelItem->setTransformOriginPoint(center.x(), center.y()); | ||||
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r2105 | //labelItem->setPos(layout[i] - center.x(), m_gridRect.bottom() + label_padding); | ||
| if (m_chartAxis->alignment()==Qt::AlignTop) | ||||
| labelItem->setPos(layout[i] - center.x(), m_axisRect.bottom() - rect.height() - labelPadding()); | ||||
| else if(m_chartAxis->alignment()==Qt::AlignBottom) | ||||
| labelItem->setPos(layout[i] - center.x(), m_axisRect.top() + labelPadding()); | ||||
| if(labelItem->pos().x() <= width || | ||||
| labelItem->pos().x() < m_axisRect.left() || | ||||
| labelItem->pos().x() + rect.width() > m_axisRect.right()){ | ||||
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r2093 | labelItem->setVisible(false); | ||
| lineItem->setVisible(false); | ||||
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r2105 | }else{ | ||
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r2093 | labelItem->setVisible(true); | ||
| lineItem->setVisible(true); | ||||
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r2105 | width=rect.width()+labelItem->pos().x(); | ||
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r2093 | } | ||
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r1577 | |||
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r2105 | if ((i+1)%2 && i>1) { | ||
| QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem*>(shades.at(i/2-1)); | ||||
| rectItem->setRect(layout[i-1],m_gridRect.top(),layout[i]-layout[i-1],m_gridRect.height()); | ||||
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r1555 | } | ||
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r2105 | lineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1)); | ||
| //lineItem->setLine(layout[i],m_gridRect.bottom(),layout[i],m_gridRect.bottom()+5); | ||||
| if (m_chartAxis->alignment()==Qt::AlignTop) | ||||
| lineItem->setLine(layout[i],m_axisRect.bottom(),layout[i],m_axisRect.bottom() - labelPadding()); | ||||
| else if(m_chartAxis->alignment()==Qt::AlignBottom) | ||||
| lineItem->setLine(layout[i],m_axisRect.top(),layout[i],m_axisRect.top() + labelPadding()); | ||||
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r1555 | } | ||
| } | ||||
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r1805 | void ChartValueAxisX::handleAxisUpdated() | ||
|
Michal Klocek
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r1698 | { | ||
| //TODO:: fix this | ||||
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r2105 | QValueAxis* axis = qobject_cast<QValueAxis*>(m_chartAxis); | ||
| m_tickCount = axis->tickCount(); | ||||
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r1698 | ChartAxis::handleAxisUpdated(); | ||
| } | ||||
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r2105 | QSizeF ChartValueAxisX::sizeHint(Qt::SizeHint which, const QSizeF& constraint) const | ||
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r1965 | { | ||
| Q_UNUSED(constraint) | ||||
| QFontMetrics fn(m_font); | ||||
| QSizeF sh; | ||||
| QSizeF base = ChartAxis::sizeHint(which, constraint); | ||||
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r2105 | QStringList ticksList = createNumberLabels(m_min,m_max,m_tickCount); | ||
| qreal width=0; | ||||
| qreal height=0; | ||||
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r1965 | |||
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r2093 | switch (which) { | ||
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r2105 | case Qt::MinimumSize:{ | ||
| int count = qMax(ticksList.last().count(),ticksList.first().count()); | ||||
| width=fn.averageCharWidth()*count; | ||||
| height=fn.height()+labelPadding(); | ||||
| width=qMax(width,base.width()); | ||||
| height+=base.height(); | ||||
| sh = QSizeF(width,height); | ||||
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r2093 | break; | ||
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r2105 | } | ||
| case Qt::PreferredSize:{ | ||||
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r2097 | for (int i = 0; i < ticksList.size(); ++i) | ||
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Michal Klocek
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r2105 | { | ||
| width+=fn.averageCharWidth()*ticksList.at(i).count(); | ||||
| } | ||||
| height=fn.height()+labelPadding(); | ||||
| width=qMax(width,base.width()); | ||||
| height+=base.height(); | ||||
| sh = QSizeF(width,height); | ||||
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r2093 | break; | ||
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r2105 | } | ||
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r2093 | default: | ||
| break; | ||||
| } | ||||
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r1965 | |||
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r2093 | return sh; | ||
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r1965 | } | ||
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r1555 | QTCOMMERCIALCHART_END_NAMESPACE | ||