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Add the new Qt template to demos and tests...
Add the new Qt template to demos and tests The new Qt template is added to demos and test applications that provide the selection for theme. Task-number: QTRD-1924 Change-Id: I847621c98c657e89678bc759ab9e8f6c290debd7 Reviewed-by: Miikka Heikkinen <miikka.heikkinen@digia.com>
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chartaxiselement.cpp
355 lines | 12.1 KiB | text/x-c | CppLexer
/ src / axis / chartaxiselement.cpp
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Miikka Heikkinen
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 r2483 /****************************************************************************
**
** Copyright (C) 2013 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
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Qt Commercial -> Qt Enterprise...
 r2574 ** This file is part of the Qt Enterprise Charts Add-on.
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 r2483 **
** $QT_BEGIN_LICENSE$
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Qt Commercial -> Qt Enterprise...
 r2574 ** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
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 r2483 ** 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 "chartaxiselement_p.h"
#include "qabstractaxis_p.h"
#include "chartpresenter_p.h"
#include "abstractchartlayout_p.h"
#include <qmath.h>
#include <QDateTime>
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 r2592 #include <QTextDocument>
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 r2483
QTCOMMERCIALCHART_BEGIN_NAMESPACE
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 r2539 static const char *labelFormatMatchString = "%[\\-\\+#\\s\\d\\.lhjztL]*([dicuoxfegXFEG])";
static QRegExp *labelFormatMatcher = 0;
class StaticLabelFormatMatcherDeleter
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 r2534 {
public:
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 r2539 StaticLabelFormatMatcherDeleter() {}
~StaticLabelFormatMatcherDeleter() { delete labelFormatMatcher; }
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 r2534 };
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 r2543 static StaticLabelFormatMatcherDeleter staticLabelFormatMatcherDeleter;
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 r2534
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 r2483 ChartAxisElement::ChartAxisElement(QAbstractAxis *axis, QGraphicsItem *item, bool intervalAxis)
: ChartElement(item),
m_axis(axis),
m_animation(0),
m_grid(new QGraphicsItemGroup(item)),
m_arrow(new QGraphicsItemGroup(item)),
m_shades(new QGraphicsItemGroup(item)),
m_labels(new QGraphicsItemGroup(item)),
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 r2539 m_title(new QGraphicsTextItem(item)),
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 r2483 m_intervalAxis(intervalAxis)
{
//initial initialization
m_arrow->setHandlesChildEvents(false);
m_arrow->setZValue(ChartPresenter::AxisZValue);
m_labels->setZValue(ChartPresenter::AxisZValue);
m_shades->setZValue(ChartPresenter::ShadesZValue);
m_grid->setZValue(ChartPresenter::GridZValue);
m_title->setZValue(ChartPresenter::GridZValue);
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 r2592 m_title->document()->setDocumentMargin(ChartPresenter::textMargin());
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 r2483 handleVisibleChanged(axis->isVisible());
connectSlots();
setFlag(QGraphicsItem::ItemHasNoContents, true);
}
ChartAxisElement::~ChartAxisElement()
{
}
void ChartAxisElement::connectSlots()
{
QObject::connect(axis(), SIGNAL(visibleChanged(bool)), this, SLOT(handleVisibleChanged(bool)));
QObject::connect(axis(), SIGNAL(lineVisibleChanged(bool)), this, SLOT(handleArrowVisibleChanged(bool)));
QObject::connect(axis(), SIGNAL(gridVisibleChanged(bool)), this, SLOT(handleGridVisibleChanged(bool)));
QObject::connect(axis(), SIGNAL(labelsVisibleChanged(bool)), this, SLOT(handleLabelsVisibleChanged(bool)));
QObject::connect(axis(), SIGNAL(shadesVisibleChanged(bool)), this, SLOT(handleShadesVisibleChanged(bool)));
QObject::connect(axis(), SIGNAL(labelsAngleChanged(int)), this, SLOT(handleLabelsAngleChanged(int)));
QObject::connect(axis(), SIGNAL(linePenChanged(const QPen&)), this, SLOT(handleArrowPenChanged(const QPen&)));
QObject::connect(axis(), SIGNAL(labelsPenChanged(const QPen&)), this, SLOT(handleLabelsPenChanged(const QPen&)));
QObject::connect(axis(), SIGNAL(labelsBrushChanged(const QBrush&)), this, SLOT(handleLabelsBrushChanged(const QBrush&)));
QObject::connect(axis(), SIGNAL(labelsFontChanged(const QFont&)), this, SLOT(handleLabelsFontChanged(const QFont&)));
QObject::connect(axis(), SIGNAL(gridLinePenChanged(const QPen&)), this, SLOT(handleGridPenChanged(const QPen&)));
QObject::connect(axis(), SIGNAL(shadesPenChanged(const QPen&)), this, SLOT(handleShadesPenChanged(const QPen&)));
QObject::connect(axis(), SIGNAL(shadesBrushChanged(const QBrush&)), this, SLOT(handleShadesBrushChanged(const QBrush&)));
QObject::connect(axis(), SIGNAL(titleTextChanged(const QString&)), this, SLOT(handleTitleTextChanged(const QString&)));
QObject::connect(axis(), SIGNAL(titleFontChanged(const QFont&)), this, SLOT(handleTitleFontChanged(const QFont&)));
QObject::connect(axis(), SIGNAL(titlePenChanged(const QPen&)), this, SLOT(handleTitlePenChanged(const QPen&)));
QObject::connect(axis(), SIGNAL(titleBrushChanged(const QBrush&)), this, SLOT(handleTitleBrushChanged(const QBrush&)));
QObject::connect(axis(), SIGNAL(titleVisibleChanged(bool)), this, SLOT(handleTitleVisibleChanged(bool)));
QObject::connect(axis()->d_ptr.data(), SIGNAL(rangeChanged(qreal, qreal)), this, SLOT(handleRangeChanged(qreal, qreal)));
}
void ChartAxisElement::handleArrowVisibleChanged(bool visible)
{
m_arrow->setVisible(visible);
}
void ChartAxisElement::handleGridVisibleChanged(bool visible)
{
m_grid->setVisible(visible);
}
void ChartAxisElement::handleLabelsVisibleChanged(bool visible)
{
QGraphicsLayoutItem::updateGeometry();
presenter()->layout()->invalidate();
m_labels->setVisible(visible);
}
void ChartAxisElement::handleShadesVisibleChanged(bool visible)
{
m_shades->setVisible(visible);
}
void ChartAxisElement::handleTitleVisibleChanged(bool visible)
{
QGraphicsLayoutItem::updateGeometry();
presenter()->layout()->invalidate();
m_title->setVisible(visible);
}
void ChartAxisElement::handleLabelsAngleChanged(int angle)
{
foreach (QGraphicsItem *item, m_labels->childItems())
item->setRotation(angle);
QGraphicsLayoutItem::updateGeometry();
presenter()->layout()->invalidate();
}
void ChartAxisElement::handleLabelsPenChanged(const QPen &pen)
{
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 r2539 Q_UNUSED(pen)
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 r2483 }
void ChartAxisElement::handleLabelsBrushChanged(const QBrush &brush)
{
foreach (QGraphicsItem *item, m_labels->childItems())
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 r2539 static_cast<QGraphicsTextItem *>(item)->setDefaultTextColor(brush.color());
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 r2483 }
void ChartAxisElement::handleLabelsFontChanged(const QFont &font)
{
foreach (QGraphicsItem *item, m_labels->childItems())
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 r2539 static_cast<QGraphicsTextItem *>(item)->setFont(font);
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 r2483 QGraphicsLayoutItem::updateGeometry();
presenter()->layout()->invalidate();
}
void ChartAxisElement::handleTitleTextChanged(const QString &title)
{
QGraphicsLayoutItem::updateGeometry();
presenter()->layout()->invalidate();
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 r2608 if (title.isEmpty() || !m_title->isVisible())
m_title->setHtml(title);
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 r2483 }
void ChartAxisElement::handleTitlePenChanged(const QPen &pen)
{
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 r2539 Q_UNUSED(pen)
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 r2483 }
void ChartAxisElement::handleTitleBrushChanged(const QBrush &brush)
{
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 r2539 m_title->setDefaultTextColor(brush.color());
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 r2483 }
void ChartAxisElement::handleTitleFontChanged(const QFont &font)
{
if (m_title->font() != font) {
m_title->setFont(font);
QGraphicsLayoutItem::updateGeometry();
presenter()->layout()->invalidate();
}
}
void ChartAxisElement::handleVisibleChanged(bool visible)
{
setVisible(visible);
if (!visible) {
m_grid->setVisible(visible);
m_arrow->setVisible(visible);
m_shades->setVisible(visible);
m_labels->setVisible(visible);
m_title->setVisible(visible);
} else {
m_grid->setVisible(axis()->isGridLineVisible());
m_arrow->setVisible(axis()->isLineVisible());
m_shades->setVisible(axis()->shadesVisible());
m_labels->setVisible(axis()->labelsVisible());
m_title->setVisible(axis()->isTitleVisible());
}
if (presenter()) presenter()->layout()->invalidate();
}
void ChartAxisElement::handleRangeChanged(qreal min, qreal max)
{
Q_UNUSED(min);
Q_UNUSED(max);
if (!isEmpty()) {
QVector<qreal> layout = calculateLayout();
updateLayout(layout);
QSizeF before = effectiveSizeHint(Qt::PreferredSize);
QSizeF after = sizeHint(Qt::PreferredSize);
if (before != after) {
QGraphicsLayoutItem::updateGeometry();
// We don't want to call invalidate on layout, since it will change minimum size of
// component, which we would like to avoid since it causes nasty flips when scrolling
// or zooming, instead recalculate layout and use plotArea for extra space.
presenter()->layout()->setGeometry(presenter()->layout()->geometry());
}
}
}
bool ChartAxisElement::isEmpty()
{
return axisGeometry().isEmpty()
|| gridGeometry().isEmpty()
|| qFuzzyCompare(min(), max());
}
qreal ChartAxisElement::min() const
{
return m_axis->d_ptr->min();
}
qreal ChartAxisElement::max() const
{
return m_axis->d_ptr->max();
}
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 r2539 static void appendFormattedLabel(const QString &capStr, const QByteArray &array,
QStringList &labels, qreal value)
{
if (capStr.isEmpty()) {
labels << QString();
} else if (capStr.at(0) == QLatin1Char('d')
|| capStr.at(0) == QLatin1Char('i')
|| capStr.at(0) == QLatin1Char('c')) {
labels << QString().sprintf(array, (qint64)value);
} else if (capStr.at(0) == QLatin1Char('u')
|| capStr.at(0) == QLatin1Char('o')
|| capStr.at(0) == QLatin1Char('x')
|| capStr.at(0) == QLatin1Char('X')) {
labels << QString().sprintf(array, (quint64)value);
} else if (capStr.at(0) == QLatin1Char('f')
|| capStr.at(0) == QLatin1Char('F')
|| capStr.at(0) == QLatin1Char('e')
|| capStr.at(0) == QLatin1Char('E')
|| capStr.at(0) == QLatin1Char('g')
|| capStr.at(0) == QLatin1Char('G')) {
labels << QString().sprintf(array, value);
} else {
labels << QString();
}
}
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 r2483 QStringList ChartAxisElement::createValueLabels(qreal min, qreal max, int ticks, const QString &format)
{
QStringList labels;
if (max <= min || ticks < 1)
return labels;
int n = qMax(int(-qFloor(log10((max - min) / (ticks - 1)))), 0);
n++;
if (format.isNull()) {
for (int i = 0; i < ticks; i++) {
qreal value = min + (i * (max - min) / (ticks - 1));
labels << QString::number(value, 'f', n);
}
} else {
QByteArray array = format.toLatin1();
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 r2539 QString capStr;
if (!labelFormatMatcher)
labelFormatMatcher = new QRegExp(labelFormatMatchString);
if (labelFormatMatcher->indexIn(format, 0) != -1)
capStr = labelFormatMatcher->cap(1);
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 r2483 for (int i = 0; i < ticks; i++) {
qreal value = min + (i * (max - min) / (ticks - 1));
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 r2539 appendFormattedLabel(capStr, array, labels, value);
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 r2483 }
}
return labels;
}
QStringList ChartAxisElement::createLogValueLabels(qreal min, qreal max, qreal base, int ticks, const QString &format)
{
QStringList labels;
if (max <= min || ticks < 1)
return labels;
int n = 0;
if (ticks > 1)
n = qMax(int(-qFloor(log10((max - min) / (ticks - 1)))), 0);
n++;
int firstTick;
if (base > 1)
firstTick = ceil(log10(min) / log10(base));
else
firstTick = ceil(log10(max) / log10(base));
if (format.isNull()) {
for (int i = firstTick; i < ticks + firstTick; i++) {
qreal value = qPow(base, i);
labels << QString::number(value, 'f', n);
}
} else {
QByteArray array = format.toLatin1();
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 r2539 QString capStr;
if (!labelFormatMatcher)
labelFormatMatcher = new QRegExp(labelFormatMatchString);
if (labelFormatMatcher->indexIn(format, 0) != -1)
capStr = labelFormatMatcher->cap(1);
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 r2483 for (int i = firstTick; i < ticks + firstTick; i++) {
qreal value = qPow(base, i);
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 r2539 appendFormattedLabel(capStr, array, labels, value);
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 r2483 }
}
return labels;
}
QStringList ChartAxisElement::createDateTimeLabels(qreal min, qreal max,int ticks,const QString &format)
{
QStringList labels;
if (max <= min || ticks < 1)
return labels;
int n = qMax(int(-floor(log10((max - min) / (ticks - 1)))), 0);
n++;
for (int i = 0; i < ticks; i++) {
qreal value = min + (i * (max - min) / (ticks - 1));
labels << QDateTime::fromMSecsSinceEpoch(value).toString(format);
}
return labels;
}
void ChartAxisElement::axisSelected()
{
emit clicked();
}
#include "moc_chartaxiselement_p.cpp"
QTCOMMERCIALCHART_END_NAMESPACE