##// END OF EJS Templates
HG_REPOSITORIES » LPP » INSTRUMENTATION » USERS » JEANDET » qtcharts
RSS

Clone from http://code.qt.io/qt/qtcharts.git

Restored minimumMargins property to QChart
Restored minimumMargins property to QChart
Michal Klocek - - Load All Authors

File last commit:

r2333:158c8aa5716a
r2369:4efd2aae0a6f
Show More
chartlogvalueaxisx.cpp
137 lines | 4.2 KiB | text/x-c | CppLexer
/ src / axis / logvalueaxis / chartlogvalueaxisx.cpp
History | Source | Raw |Copy content |Copy permalink
Marek Rosa
QLogValueAxis added. Log domain missing
 r2274 /****************************************************************************
**
** 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 "chartlogvalueaxisx_p.h"
#include "chartpresenter_p.h"
#include "qlogvalueaxis.h"
#include "chartlayout_p.h"
#include <QGraphicsLayout>
#include <QFontMetrics>
#include <qmath.h>
Michal Klocek
Fixes missing layout updated on ticks,base and format calls
 r2333 #include <QDebug>
Marek Rosa
QLogValueAxis added. Log domain missing
 r2274
QTCOMMERCIALCHART_BEGIN_NAMESPACE
ChartLogValueAxisX::ChartLogValueAxisX(QLogValueAxis *axis, QGraphicsItem* item)
: HorizontalAxis(axis, item),
m_axis(axis)
{
Marek Rosa
Fixed: chart not redrawing when logaxis's logBase value changed
 r2322 QObject::connect(m_axis,SIGNAL(baseChanged(qreal)),this, SLOT(handleBaseChanged(qreal)));
Marek Rosa
Fixed: axis not redrawing when labelFormat changed
 r2323 QObject::connect(m_axis,SIGNAL(labelFormatChanged(QString)),this, SLOT(handleLabelFormatChanged(QString)));
Marek Rosa
QLogValueAxis added. Log domain missing
 r2274 }
ChartLogValueAxisX::~ChartLogValueAxisX()
{
}
QVector<qreal> ChartLogValueAxisX::calculateLayout() const
{
QVector<qreal> points;
qreal logMax = log10(m_axis->max()) / log10(m_axis->base());
qreal logMin = log10(m_axis->min()) / log10(m_axis->base());
Marek Rosa
Domains added
 r2275 qreal leftEdge = logMin < logMax ? logMin : logMax;
qreal ceilEdge = ceil(leftEdge);
Marek Rosa
QLogValueAxis added. Log domain missing
 r2274 int tickCount = qAbs(qRound(logMax - logMin));
Marek Rosa
Domains added
 r2275 tickCount++;
Marek Rosa
QLogValueAxis added. Log domain missing
 r2274
points.resize(tickCount);
const QRectF &gridRect = gridGeometry();
const qreal deltaX = gridRect.width() / qAbs(logMax - logMin);
for (int i = 0; i < tickCount; ++i)
Marek Rosa
Domains added
 r2275 points[i] = (ceilEdge + i) * deltaX - leftEdge * deltaX + gridRect.left();
Marek Rosa
QLogValueAxis added. Log domain missing
 r2274
return points;
}
void ChartLogValueAxisX::updateGeometry()
{
const QVector<qreal>& layout = ChartAxis::layout();
if (layout.isEmpty())
return;
setLabels(createLogValueLabels(m_axis->min(), m_axis->max(), m_axis->base(), layout.size(), m_axis->labelFormat()));
HorizontalAxis::updateGeometry();
}
Marek Rosa
Fixed: chart not redrawing when logaxis's logBase value changed
 r2322 void ChartLogValueAxisX::handleBaseChanged(qreal base)
{
Q_UNUSED(base);
Michal Klocek
Fixes missing layout updated on ticks,base and format calls
 r2333 QGraphicsLayoutItem::updateGeometry();
Marek Rosa
Fixed: chart not redrawing when logaxis's logBase value changed
 r2322 if(presenter()) presenter()->layout()->invalidate();
}
Marek Rosa
QLogValueAxis added. Log domain missing
 r2274
Marek Rosa
Fixed: axis not redrawing when labelFormat changed
 r2323 void ChartLogValueAxisX::handleLabelFormatChanged(const QString &format)
{
Q_UNUSED(format);
Michal Klocek
Fixes missing layout updated on ticks,base and format calls
 r2333 QGraphicsLayoutItem::updateGeometry();
Marek Rosa
Fixed: axis not redrawing when labelFormat changed
 r2323 if(presenter()) presenter()->layout()->invalidate();
}
Marek Rosa
QLogValueAxis added. Log domain missing
 r2274 QSizeF ChartLogValueAxisX::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
{
Q_UNUSED(constraint)
QFontMetrics fn(font());
QSizeF sh;
QSizeF base = HorizontalAxis::sizeHint(which, constraint);
QStringList ticksList;
qreal logMax = log10(m_axis->max()) / log10(m_axis->base());
qreal logMin = log10(m_axis->min()) / log10(m_axis->base());
int tickCount = qAbs(qRound(logMax - logMin));
Marek Rosa
Domains added
 r2275 tickCount++;
Marek Rosa
QLogValueAxis added. Log domain missing
 r2274
if (m_axis->max() > m_axis->min() && tickCount > 1)
ticksList = createLogValueLabels(m_axis->min(), m_axis->max(), m_axis->base(), tickCount, m_axis->labelFormat());
else
ticksList.append(QString(" "));
qreal width = 0;
qreal height = 0;
switch (which) {
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);
break;
}
case Qt::PreferredSize: {
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);
break;
}
default:
break;
}
return sh;
}
Marek Rosa
Fixed: chart not redrawing when logaxis's logBase value changed
 r2322 #include "moc_chartlogvalueaxisx_p.cpp"
Marek Rosa
QLogValueAxis added. Log domain missing
 r2274 QTCOMMERCIALCHART_END_NAMESPACE