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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "chartcategoryaxisy_p.h"
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#include "qcategoryaxis.h"
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#include "qabstractaxis.h"
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#include "chartpresenter_p.h"
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#include <QGraphicsLayout>
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#include <QFontMetrics>
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#include <qmath.h>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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ChartCategoryAxisY::ChartCategoryAxisY(QCategoryAxis *axis,ChartPresenter *presenter) : VerticalAxis(axis,presenter,true),
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m_axis(axis)
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{
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}
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ChartCategoryAxisY::~ChartCategoryAxisY()
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{
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}
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QVector<qreal> ChartCategoryAxisY::calculateLayout() const
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{
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int tickCount = m_axis->categoriesLabels().count() + 1;
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QVector<qreal> points;
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if (tickCount < 2)
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return points;
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const QRectF& gridRect = gridGeometry();
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qreal range = m_axis->max() - m_axis->min();
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if (range > 0) {
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points.resize(tickCount);
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qreal scale = gridRect.height() / range;
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for (int i = 0; i < tickCount; ++i)
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if (i < tickCount - 1) {
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int y = -(m_axis->startValue(m_axis->categoriesLabels().at(i)) - m_axis->min()) * scale + gridRect.bottom();
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points[i] = y;
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} else {
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int y = -(m_axis->endValue(m_axis->categoriesLabels().at(i - 1)) - m_axis->min()) * scale + gridRect.bottom();
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points[i] = y;
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}
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}
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return points;
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}
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void ChartCategoryAxisY::updateGeometry()
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{
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setLabels(m_axis->categoriesLabels()<<"");
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VerticalAxis::updateGeometry();
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}
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void ChartCategoryAxisY::handleAxisUpdated()
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{
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updateGeometry();
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ChartAxis::handleAxisUpdated();
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}
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QSizeF ChartCategoryAxisY::sizeHint(Qt::SizeHint which, const QSizeF& constraint) const
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{
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Q_UNUSED(constraint)
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QFontMetrics fn(font());
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QSizeF sh;
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QSizeF base = ChartAxis::sizeHint(which, constraint);
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QStringList ticksList; //TODO::
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qreal width=0;
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qreal height=0;
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switch (which) {
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case Qt::MinimumSize:
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width = fn.boundingRect("...").width()+labelPadding();
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height = fn.height();
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width=qMax(width,base.width());
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height+=base.height();
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sh = QSizeF(width,height);
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break;
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case Qt::PreferredSize:{
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for (int i = 0; i < ticksList.size(); ++i)
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{
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QRectF rect = fn.boundingRect(ticksList.at(i));
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height+=rect.height();
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width=qMax(rect.width()+labelPadding(),width);
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}
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height=qMax(height,base.height());
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width+=base.width();
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sh = QSizeF(width,height);
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break;
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}
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default:
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break;
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}
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return sh;
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}
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QTCOMMERCIALCHART_END_NAMESPACE
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