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qml doc update
qml doc update
Michal Klocek - - Load All Authors

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chartvaluesaxisy.cpp
117 lines | 3.8 KiB | text/x-c | CppLexer
/ src / axis / chartvaluesaxisy.cpp
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Marek Rosa
Added Chart classes for value and categories axis
 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
** $QT_END_LICENSE$
**
****************************************************************************/
#include "chartvaluesaxisy_p.h"
#include "qabstractaxis.h"
#include "chartpresenter_p.h"
#include "chartanimator_p.h"
#include <QGraphicsLayout>
#include <QDebug>
#include <QFontMetrics>
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Removed generic chartaxis
 r1561 #include <cmath>
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 r1555
static int label_padding = 5;
QTCOMMERCIALCHART_BEGIN_NAMESPACE
ChartValuesAxisY::ChartValuesAxisY(QAbstractAxis *axis,ChartPresenter *presenter) : ChartAxis(axis,presenter)
{
}
ChartValuesAxisY::~ChartValuesAxisY()
{
}
QVector<qreal> ChartValuesAxisY::calculateLayout() const
{
Q_ASSERT(m_ticksCount>=2);
QVector<qreal> points;
points.resize(m_ticksCount);
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 r1561 const qreal deltaY = m_rect.height()/(m_ticksCount-1);
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 r1555 for (int i = 0; i < m_ticksCount; ++i) {
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 r1561 int y = i * -deltaY + m_rect.bottom();
points[i] = y;
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 r1555 }
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 r1561
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 r1555 return points;
}
void ChartValuesAxisY::updateGeometry()
{
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 r1561 const QVector<qreal> &layout = ChartAxis::layout();
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 r1555 m_minWidth = 0;
m_minHeight = 0;
if(layout.isEmpty()) return;
QStringList ticksList;
Michal Klocek
Refactor QChart API...
 r1577 createNumberLabels(ticksList,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();
QList<QGraphicsItem *> axis = m_axis->childItems();
Q_ASSERT(labels.size() == ticksList.size());
Q_ASSERT(layout.size() == ticksList.size());
Marek Rosa
Removed generic chartaxis
 r1561 qreal height = 2*m_rect.bottom();
Marek Rosa
Added Chart classes for value and categories axis
 r1555 QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0));
Marek Rosa
Removed generic chartaxis
 r1561 lineItem->setLine(m_rect.left() , m_rect.top(), m_rect.left(), m_rect.bottom());
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 r1555
for (int i = 0; i < layout.size(); ++i) {
QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i));
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Removed generic chartaxis
 r1561 lineItem->setLine(m_rect.left() , layout[i], m_rect.right(), layout[i]);
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 r1555 QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem*>(labels.at(i));
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 r1561
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 r1555 labelItem->setText(ticksList.at(i));
const QRectF& rect = labelItem->boundingRect();
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 r1561
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 r1555 QPointF center = rect.center();
labelItem->setTransformOriginPoint(center.x(), center.y());
Marek Rosa
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 r1561 labelItem->setPos(m_rect.left() - rect.width() - label_padding , layout[i]-center.y());
Marek Rosa
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 r1555
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 r1561 if(labelItem->pos().y()+rect.height()>height) {
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 r1555 labelItem->setVisible(false);
lineItem->setVisible(false);
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 r1561 }
else {
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 r1555 labelItem->setVisible(true);
lineItem->setVisible(true);
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 r1561 height=labelItem->pos().y();
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 r1555 }
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 r1561
m_minWidth=qMax(rect.width()+label_padding,m_minWidth);
m_minHeight+=rect.height();
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 r1555
if ((i+1)%2 && i>1) {
QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem*>(shades.at(i/2-1));
Marek Rosa
Removed generic chartaxis
 r1561 rectItem->setRect(m_rect.left(),layout[i],m_rect.width(),layout[i-1]-layout[i]);
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 r1555 }
lineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1));
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Removed generic chartaxis
 r1561 lineItem->setLine(m_rect.left()-5,layout[i],m_rect.left(),layout[i]);
Marek Rosa
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 r1555 }
}
QTCOMMERCIALCHART_END_NAMESPACE