|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2016 The Qt Company Ltd.
|
|
|
** Contact: https://www.qt.io/licensing/
|
|
|
**
|
|
|
** This file is part of the Qt Charts module of the Qt Toolkit.
|
|
|
**
|
|
|
** $QT_BEGIN_LICENSE:GPL$
|
|
|
** Commercial License Usage
|
|
|
** Licensees holding valid commercial Qt licenses may use this file in
|
|
|
** accordance with the commercial license agreement provided with the
|
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
|
** a written agreement between you and The Qt Company. For licensing terms
|
|
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
|
|
** information use the contact form at https://www.qt.io/contact-us.
|
|
|
**
|
|
|
** GNU General Public License Usage
|
|
|
** Alternatively, this file may be used under the terms of the GNU
|
|
|
** General Public License version 3 or (at your option) any later version
|
|
|
** approved by the KDE Free Qt Foundation. The licenses are as published by
|
|
|
** the Free Software Foundation and appearing in the file LICENSE.GPL3
|
|
|
** included in the packaging of this file. Please review the following
|
|
|
** information to ensure the GNU General Public License requirements will
|
|
|
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
|
|
|
**
|
|
|
** $QT_END_LICENSE$
|
|
|
**
|
|
|
****************************************************************************/
|
|
|
|
|
|
#include <private/chartaxiselement_p.h>
|
|
|
#include <private/qabstractaxis_p.h>
|
|
|
#include <private/chartpresenter_p.h>
|
|
|
#include <private/abstractchartlayout_p.h>
|
|
|
#include <QtCharts/QCategoryAxis>
|
|
|
#include <QtCore/QtMath>
|
|
|
#include <QtCore/QDateTime>
|
|
|
#include <QtGui/QTextDocument>
|
|
|
#include <cmath>
|
|
|
|
|
|
QT_CHARTS_BEGIN_NAMESPACE
|
|
|
|
|
|
static const char *labelFormatMatchString = "%[\\-\\+#\\s\\d\\.\\'lhjztL]*([dicuoxfegXFEG])";
|
|
|
static const char *labelFormatMatchLocalizedString = "^([^%]*)%\\.(\\d+)([defgiEG])(.*)$";
|
|
|
static QRegExp *labelFormatMatcher = 0;
|
|
|
static QRegExp *labelFormatMatcherLocalized = 0;
|
|
|
class StaticLabelFormatMatcherDeleter
|
|
|
{
|
|
|
public:
|
|
|
StaticLabelFormatMatcherDeleter() {}
|
|
|
~StaticLabelFormatMatcherDeleter() {
|
|
|
delete labelFormatMatcher;
|
|
|
delete labelFormatMatcherLocalized;
|
|
|
}
|
|
|
};
|
|
|
static StaticLabelFormatMatcherDeleter staticLabelFormatMatcherDeleter;
|
|
|
|
|
|
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_minorGrid(new QGraphicsItemGroup(item)),
|
|
|
m_minorArrow(new QGraphicsItemGroup(item)),
|
|
|
m_shades(new QGraphicsItemGroup(item)),
|
|
|
m_labels(new QGraphicsItemGroup(item)),
|
|
|
m_title(new QGraphicsTextItem(item)),
|
|
|
m_intervalAxis(intervalAxis)
|
|
|
|
|
|
{
|
|
|
//initial initialization
|
|
|
m_arrow->setHandlesChildEvents(false);
|
|
|
m_arrow->setZValue(ChartPresenter::AxisZValue);
|
|
|
m_minorArrow->setHandlesChildEvents(false);
|
|
|
m_minorArrow->setZValue(ChartPresenter::AxisZValue);
|
|
|
m_labels->setZValue(ChartPresenter::AxisZValue);
|
|
|
m_shades->setZValue(ChartPresenter::ShadesZValue);
|
|
|
m_grid->setZValue(ChartPresenter::GridZValue);
|
|
|
m_minorGrid->setZValue(ChartPresenter::GridZValue);
|
|
|
m_title->setZValue(ChartPresenter::GridZValue);
|
|
|
m_title->document()->setDocumentMargin(ChartPresenter::textMargin());
|
|
|
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(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(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)));
|
|
|
QObject::connect(axis(), SIGNAL(reverseChanged(bool)), this, SLOT(handleReverseChanged(bool)));
|
|
|
QObject::connect(axis(), SIGNAL(lineVisibleChanged(bool)),
|
|
|
this, SLOT(handleMinorArrowVisibleChanged(bool)));
|
|
|
QObject::connect(axis(), SIGNAL(linePenChanged(const QPen&)), this,
|
|
|
SLOT(handleMinorArrowPenChanged(const QPen&)));
|
|
|
QObject::connect(axis(), SIGNAL(minorGridVisibleChanged(bool)),
|
|
|
this, SLOT(handleMinorGridVisibleChanged(bool)));
|
|
|
QObject::connect(axis(), SIGNAL(minorGridLinePenChanged(const QPen&)),
|
|
|
this, SLOT(handleMinorGridPenChanged(const QPen&)));
|
|
|
QObject::connect(axis(), SIGNAL(gridLineColorChanged(const QColor&)),
|
|
|
this, SLOT(handleGridLineColorChanged(const QColor&)));
|
|
|
QObject::connect(axis(), SIGNAL(minorGridLineColorChanged(const QColor&)),
|
|
|
this, SLOT(handleMinorGridLineColorChanged(const QColor&)));
|
|
|
|
|
|
if (axis()->type() == QAbstractAxis::AxisTypeCategory) {
|
|
|
QCategoryAxis *categoryAxis = static_cast<QCategoryAxis *>(axis());
|
|
|
QObject::connect(categoryAxis,
|
|
|
SIGNAL(labelsPositionChanged(QCategoryAxis::AxisLabelsPosition)),
|
|
|
this, SLOT(handleLabelsPositionChanged()));
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void ChartAxisElement::handleArrowVisibleChanged(bool visible)
|
|
|
{
|
|
|
m_arrow->setVisible(visible);
|
|
|
}
|
|
|
|
|
|
void ChartAxisElement::handleMinorArrowVisibleChanged(bool visible)
|
|
|
{
|
|
|
m_minorArrow->setVisible(visible);
|
|
|
}
|
|
|
|
|
|
void ChartAxisElement::handleGridVisibleChanged(bool visible)
|
|
|
{
|
|
|
m_grid->setVisible(visible);
|
|
|
}
|
|
|
|
|
|
void ChartAxisElement::handleMinorGridVisibleChanged(bool visible)
|
|
|
{
|
|
|
m_minorGrid->setVisible(visible);
|
|
|
}
|
|
|
|
|
|
void ChartAxisElement::handleLabelsPositionChanged()
|
|
|
{
|
|
|
QGraphicsLayoutItem::updateGeometry();
|
|
|
presenter()->layout()->invalidate();
|
|
|
}
|
|
|
|
|
|
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::handleLabelsBrushChanged(const QBrush &brush)
|
|
|
{
|
|
|
foreach (QGraphicsItem *item, m_labels->childItems())
|
|
|
static_cast<QGraphicsTextItem *>(item)->setDefaultTextColor(brush.color());
|
|
|
}
|
|
|
|
|
|
void ChartAxisElement::handleLabelsFontChanged(const QFont &font)
|
|
|
{
|
|
|
foreach (QGraphicsItem *item, m_labels->childItems())
|
|
|
static_cast<QGraphicsTextItem *>(item)->setFont(font);
|
|
|
QGraphicsLayoutItem::updateGeometry();
|
|
|
presenter()->layout()->invalidate();
|
|
|
}
|
|
|
|
|
|
void ChartAxisElement::handleTitleTextChanged(const QString &title)
|
|
|
{
|
|
|
QGraphicsLayoutItem::updateGeometry();
|
|
|
presenter()->layout()->invalidate();
|
|
|
if (title.isEmpty() || !m_title->isVisible())
|
|
|
m_title->setHtml(title);
|
|
|
}
|
|
|
|
|
|
void ChartAxisElement::handleTitleBrushChanged(const QBrush &brush)
|
|
|
{
|
|
|
m_title->setDefaultTextColor(brush.color());
|
|
|
}
|
|
|
|
|
|
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_minorGrid->setVisible(visible);
|
|
|
m_minorArrow->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_minorGrid->setVisible(axis()->isMinorGridLineVisible());
|
|
|
m_minorArrow->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());
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void ChartAxisElement::handleReverseChanged(bool reverse)
|
|
|
{
|
|
|
Q_UNUSED(reverse);
|
|
|
|
|
|
QGraphicsLayoutItem::updateGeometry();
|
|
|
presenter()->layout()->invalidate();
|
|
|
}
|
|
|
|
|
|
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();
|
|
|
}
|
|
|
|
|
|
QString ChartAxisElement::formatLabel(const QString &formatSpec, const QByteArray &array,
|
|
|
qreal value, int precision, const QString &preStr,
|
|
|
const QString &postStr) const
|
|
|
{
|
|
|
QString retVal;
|
|
|
if (!formatSpec.isEmpty()) {
|
|
|
if (formatSpec.at(0) == QLatin1Char('d')
|
|
|
|| formatSpec.at(0) == QLatin1Char('i')
|
|
|
|| formatSpec.at(0) == QLatin1Char('c')) {
|
|
|
if (presenter()->localizeNumbers())
|
|
|
retVal = preStr + presenter()->locale().toString(qint64(value)) + postStr;
|
|
|
else
|
|
|
retVal = QString().sprintf(array, qint64(value));
|
|
|
} else if (formatSpec.at(0) == QLatin1Char('u')
|
|
|
|| formatSpec.at(0) == QLatin1Char('o')
|
|
|
|| formatSpec.at(0) == QLatin1Char('x')
|
|
|
|| formatSpec.at(0) == QLatin1Char('X')) {
|
|
|
// These formats are not supported by localized numbers
|
|
|
retVal = QString().sprintf(array, quint64(value));
|
|
|
} else if (formatSpec.at(0) == QLatin1Char('f')
|
|
|
|| formatSpec.at(0) == QLatin1Char('F')
|
|
|
|| formatSpec.at(0) == QLatin1Char('e')
|
|
|
|| formatSpec.at(0) == QLatin1Char('E')
|
|
|
|| formatSpec.at(0) == QLatin1Char('g')
|
|
|
|| formatSpec.at(0) == QLatin1Char('G')) {
|
|
|
if (presenter()->localizeNumbers()) {
|
|
|
retVal = preStr
|
|
|
+ presenter()->locale().toString(value, formatSpec.at(0).toLatin1(),
|
|
|
precision)
|
|
|
+ postStr;
|
|
|
} else {
|
|
|
retVal = QString().sprintf(array, value);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
return retVal;
|
|
|
}
|
|
|
|
|
|
QStringList ChartAxisElement::createValueLabels(qreal min, qreal max, int ticks,
|
|
|
const QString &format) const
|
|
|
{
|
|
|
QStringList labels;
|
|
|
|
|
|
if (max <= min || ticks < 1)
|
|
|
return labels;
|
|
|
|
|
|
if (format.isNull()) {
|
|
|
int n = qMax(int(-qFloor(std::log10((max - min) / (ticks - 1)))), 0) + 1;
|
|
|
for (int i = 0; i < ticks; i++) {
|
|
|
qreal value = min + (i * (max - min) / (ticks - 1));
|
|
|
labels << presenter()->numberToString(value, 'f', n);
|
|
|
}
|
|
|
} else {
|
|
|
QByteArray array = format.toLatin1();
|
|
|
QString formatSpec;
|
|
|
QString preStr;
|
|
|
QString postStr;
|
|
|
int precision = 6; // Six is the default precision in Qt API
|
|
|
if (presenter()->localizeNumbers()) {
|
|
|
if (!labelFormatMatcherLocalized)
|
|
|
labelFormatMatcherLocalized
|
|
|
= new QRegExp(QString::fromLatin1(labelFormatMatchLocalizedString));
|
|
|
if (labelFormatMatcherLocalized->indexIn(format, 0) != -1) {
|
|
|
preStr = labelFormatMatcherLocalized->cap(1);
|
|
|
if (!labelFormatMatcherLocalized->cap(2).isEmpty())
|
|
|
precision = labelFormatMatcherLocalized->cap(2).toInt();
|
|
|
formatSpec = labelFormatMatcherLocalized->cap(3);
|
|
|
postStr = labelFormatMatcherLocalized->cap(4);
|
|
|
}
|
|
|
} else {
|
|
|
if (!labelFormatMatcher)
|
|
|
labelFormatMatcher = new QRegExp(QString::fromLatin1(labelFormatMatchString));
|
|
|
if (labelFormatMatcher->indexIn(format, 0) != -1)
|
|
|
formatSpec = labelFormatMatcher->cap(1);
|
|
|
}
|
|
|
for (int i = 0; i < ticks; i++) {
|
|
|
qreal value = min + (i * (max - min) / (ticks - 1));
|
|
|
labels << formatLabel(formatSpec, array, value, precision, preStr, postStr);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return labels;
|
|
|
}
|
|
|
|
|
|
QStringList ChartAxisElement::createLogValueLabels(qreal min, qreal max, qreal base, int ticks,
|
|
|
const QString &format) const
|
|
|
{
|
|
|
QStringList labels;
|
|
|
|
|
|
if (max <= min || ticks < 1)
|
|
|
return labels;
|
|
|
|
|
|
int firstTick;
|
|
|
if (base > 1)
|
|
|
firstTick = qCeil(std::log10(min) / std::log10(base));
|
|
|
else
|
|
|
firstTick = qCeil(std::log10(max) / std::log10(base));
|
|
|
|
|
|
if (format.isNull()) {
|
|
|
int n = 0;
|
|
|
if (ticks > 1)
|
|
|
n = qMax(int(-qFloor(std::log10((max - min) / (ticks - 1)))), 0);
|
|
|
n++;
|
|
|
for (int i = firstTick; i < ticks + firstTick; i++) {
|
|
|
qreal value = qPow(base, i);
|
|
|
labels << presenter()->numberToString(value, 'f', n);
|
|
|
}
|
|
|
} else {
|
|
|
QByteArray array = format.toLatin1();
|
|
|
QString formatSpec;
|
|
|
QString preStr;
|
|
|
QString postStr;
|
|
|
int precision = 6; // Six is the default precision in Qt API
|
|
|
if (presenter()->localizeNumbers()) {
|
|
|
if (!labelFormatMatcherLocalized)
|
|
|
labelFormatMatcherLocalized =
|
|
|
new QRegExp(QString::fromLatin1(labelFormatMatchLocalizedString));
|
|
|
if (labelFormatMatcherLocalized->indexIn(format, 0) != -1) {
|
|
|
preStr = labelFormatMatcherLocalized->cap(1);
|
|
|
if (!labelFormatMatcherLocalized->cap(2).isEmpty())
|
|
|
precision = labelFormatMatcherLocalized->cap(2).toInt();
|
|
|
formatSpec = labelFormatMatcherLocalized->cap(3);
|
|
|
postStr = labelFormatMatcherLocalized->cap(4);
|
|
|
}
|
|
|
} else {
|
|
|
if (!labelFormatMatcher)
|
|
|
labelFormatMatcher = new QRegExp(QString::fromLatin1(labelFormatMatchString));
|
|
|
if (labelFormatMatcher->indexIn(format, 0) != -1)
|
|
|
formatSpec = labelFormatMatcher->cap(1);
|
|
|
}
|
|
|
for (int i = firstTick; i < ticks + firstTick; i++) {
|
|
|
qreal value = qPow(base, i);
|
|
|
labels << formatLabel(formatSpec, array, value, precision, preStr, postStr);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return labels;
|
|
|
}
|
|
|
|
|
|
QStringList ChartAxisElement::createDateTimeLabels(qreal min, qreal max,int ticks,
|
|
|
const QString &format) const
|
|
|
{
|
|
|
QStringList labels;
|
|
|
|
|
|
if (max <= min || ticks < 1)
|
|
|
return labels;
|
|
|
|
|
|
int n = qMax(int(-qFloor(std::log10((max - min) / (ticks - 1)))), 0);
|
|
|
n++;
|
|
|
for (int i = 0; i < ticks; i++) {
|
|
|
qreal value = min + (i * (max - min) / (ticks - 1));
|
|
|
labels << presenter()->locale().toString(QDateTime::fromMSecsSinceEpoch(value), format);
|
|
|
}
|
|
|
return labels;
|
|
|
}
|
|
|
|
|
|
void ChartAxisElement::axisSelected()
|
|
|
{
|
|
|
emit clicked();
|
|
|
}
|
|
|
|
|
|
#include "moc_chartaxiselement_p.cpp"
|
|
|
|
|
|
QT_CHARTS_END_NAMESPACE
|
|
|
|
