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declarativechart.cpp
1042 lines | 33.2 KiB | text/x-c | CppLexer
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd
** All rights reserved.
** For any questions to The Qt Company, please use contact form at http://qt.io
**
** This file is part of the Qt Charts module.
**
** Licensees holding valid commercial license for Qt may use this file in
** accordance with the Qt License Agreement provided with the Software
** or, alternatively, in accordance with the terms contained in a written
** agreement between you and The Qt Company.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.io
**
****************************************************************************/
#include "declarativechart.h"
#include <QtGui/QPainter>
#include "declarativelineseries.h"
#include "declarativeareaseries.h"
#include "declarativebarseries.h"
#include "declarativepieseries.h"
#include "declarativesplineseries.h"
#include "declarativeboxplotseries.h"
#include "declarativescatterseries.h"
#include <QtCharts/QBarCategoryAxis>
#include <QtCharts/QValueAxis>
#include <QtCharts/QLogValueAxis>
#include <QtCharts/QCategoryAxis>
#include <private/qabstractseries_p.h>
#include "declarativemargins.h"
#include <private/chartdataset_p.h>
#include "declarativeaxes.h"
#include <private/qchart_p.h>
#include <QtCharts/QPolarChart>
#ifndef QT_ON_ARM
#include <QtCharts/QDateTimeAxis>
#endif
#include <QtWidgets/QGraphicsSceneMouseEvent>
#include <QtWidgets/QGraphicsSceneHoverEvent>
#include <QtWidgets/QApplication>
#include <QtCore/QTimer>
#include <QtCore/QThread>
QT_CHARTS_BEGIN_NAMESPACE
/*!
\qmltype ChartView
\instantiates DeclarativeChart
\inqmlmodule QtCharts
\brief Chart element.
ChartView element is the parent that is responsible for showing different chart series types.
The following QML shows how to create a simple chart with one pie series:
\snippet qmlpiechart/qml/qmlpiechart/main.qml 1
\snippet qmlpiechart/qml/qmlpiechart/main.qml 2
\snippet qmlpiechart/qml/qmlpiechart/main.qml 3
\beginfloatleft
\image examples_qmlpiechart.png
\endfloat
\clearfloat
*/
/*!
\qmlproperty Theme ChartView::theme
Theme defines the visual appearance of the chart, including for example colors, fonts, line
widths and chart background.
*/
/*!
\qmlproperty Animation ChartView::animationOptions
Animation configuration of the chart. One of ChartView.NoAnimation, ChartView.GridAxisAnimations,
ChartView.SeriesAnimations or ChartView.AllAnimations.
*/
/*!
\qmlproperty Font ChartView::titleFont
The title font of the chart.
See the Qt documentation for more details of Font.
*/
/*!
\qmlproperty string ChartView::title
The title of the chart, shown on top of the chart.
\sa ChartView::titleColor
*/
/*!
\qmlproperty color ChartView::titleColor
The color of the title text.
*/
/*!
\qmlproperty Legend ChartView::legend
The legend of the chart. Legend lists all the series, pie slices and bar sets added on the chart.
*/
/*!
\qmlproperty int ChartView::count
The count of series added to the chart.
*/
/*!
\qmlproperty color ChartView::backgroundColor
The color of the chart's background. By default background color is defined by chart theme.
\sa ChartView::theme
*/
/*!
\qmlproperty real ChartView::backgroundRoundness
The diameter of the rounding circle at the corners of the chart background.
*/
/*!
\qmlproperty color ChartView::plotAreaColor
The color of the background of the chart's plot area. By default plot area background uses chart's
background color.
\sa ChartView::backgroundColor
*/
/*!
\qmlproperty list<AbstractAxis> ChartView::axes
The axes of the ChartView.
*/
/*!
\qmlproperty bool ChartView::dropShadowEnabled
The chart's border drop shadow. Set to true to enable drop shadow.
*/
/*!
\qmlproperty rect ChartView::plotArea
The area on the ChartView that is used for drawing series. This is the ChartView rect without the
margins.
\sa ChartView::margins
*/
/*!
\qmlproperty Margins ChartView::margins
The minimum margins allowed between the outer bounds and the plotArea of the ChartView. Margins
area of ChartView is used for drawing title, axes and legend.
*/
/*!
\qmlproperty bool ChartView::localizeNumbers
\since QtCharts 2.0
When \c{true}, all generated numbers appearing in various series and axis labels will be
localized using the default QLocale of the application, which defaults to the system locale.
When \c{false}, the "C" locale is always used.
Defaults to \c{false}.
\sa locale
*/
/*!
\qmlproperty locale ChartView::locale
\since QtCharts 2.0
Sets the locale used to format various chart labels when localizeNumbers is \c{true}.
This also determines the locale used to format DateTimeAxis labels regardless of
localizeNumbers property.
Defaults to application default locale at the time the chart is constructed.
\sa localizeNumbers
*/
/*!
\qmlmethod AbstractSeries ChartView::series(int index)
Returns the series with \a index on the chart. This allows you to loop through the series of a chart together with
the count property of the chart.
*/
/*!
\qmlmethod AbstractSeries ChartView::series(string name)
Returns the first series on the chart with \a name. If there is no series with that name, returns null.
*/
/*!
\qmlmethod AbstractSeries ChartView::createSeries(SeriesType type, string name, AbstractAxis axisX, AbstractAxis axisY)
Creates a series object of \a type to the chart with name \a name, optional axis \a axisX and
optional axis \a axisY. For example:
\code
// lineSeries is a LineSeries object that has already been added to the ChartView; re-use it's axes
var myAxisX = chartView.axisX(lineSeries);
var myAxisY = chartView.axisY(lineSeries);
var scatter = chartView.createSeries(ChartView.SeriesTypeScatter, "scatter series", myAxisX, myAxisY);
\endcode
*/
/*!
\qmlmethod ChartView::removeSeries(AbstractSeries series)
Removes the \a series from the chart. The series object is also destroyed.
*/
/*!
\qmlmethod ChartView::removeAllSeries()
Removes all series from the chart. All the series objects are also destroyed.
*/
/*!
\qmlmethod Axis ChartView::axisX(AbstractSeries series)
The x-axis of the series.
*/
/*!
\qmlmethod ChartView::setAxisX(AbstractAxis axis, AbstractSeries series)
Set the x-axis of the series.
*/
/*!
\qmlmethod Axis ChartView::axisY(AbstractSeries series)
The y-axis of the series.
*/
/*!
\qmlmethod ChartView::setAxisY(AbstractAxis axis, AbstractSeries series)
Set the y-axis of the series.
*/
/*!
\qmlmethod ChartView::zoom(real factor)
Zooms in by \a factor on the center of the chart.
*/
/*!
\qmlmethod ChartView::scrollLeft(real pixels)
Scrolls to left by \a pixels. This is a convenience function that suits for example for key navigation.
*/
/*!
\qmlmethod ChartView::scrollRight(real pixels)
Scrolls to right by \a pixels. This is a convenience function that suits for example for key navigation.
*/
/*!
\qmlmethod ChartView::scrollUp(real pixels)
Scrolls up by \a pixels. This is a convenience function that suits for example for key navigation.
*/
/*!
\qmlmethod ChartView::scrollDown(real pixels)
Scrolls down by \a pixels. This is a convenience function that suits for example for key navigation.
*/
/*!
\qmlsignal ChartView::seriesAdded(AbstractSeries series)
The \a series has been added to the chart.
*/
/*!
\qmlsignal ChartView::seriesRemoved(AbstractSeries series)
The \a series has been removed from the chart. Please note that \a series is no longer a valid
object after the signal handler has completed.
*/
DeclarativeChart::DeclarativeChart(QQuickItem *parent)
: QQuickPaintedItem(parent)
{
initChart(QChart::ChartTypeCartesian);
}
DeclarativeChart::DeclarativeChart(QChart::ChartType type, QQuickItem *parent)
: QQuickPaintedItem(parent)
{
initChart(type);
}
void DeclarativeChart::initChart(QChart::ChartType type)
{
m_currentSceneImage = 0;
m_guiThreadId = QThread::currentThreadId();
m_paintThreadId = 0;
m_updatePending = false;
if (type == QChart::ChartTypePolar)
m_chart = new QPolarChart();
else
m_chart = new QChart();
m_scene = new QGraphicsScene(this);
m_scene->addItem(m_chart);
setAntialiasing(QQuickItem::antialiasing());
connect(m_scene, SIGNAL(changed(QList<QRectF>)), this, SLOT(sceneChanged(QList<QRectF>)));
connect(this, SIGNAL(antialiasingChanged(bool)), this, SLOT(handleAntialiasingChanged(bool)));
setAcceptedMouseButtons(Qt::AllButtons);
setAcceptHoverEvents(true);
m_margins = new DeclarativeMargins(this);
m_margins->setTop(m_chart->margins().top());
m_margins->setLeft(m_chart->margins().left());
m_margins->setRight(m_chart->margins().right());
m_margins->setBottom(m_chart->margins().bottom());
connect(m_margins, SIGNAL(topChanged(int,int,int,int)),
this, SLOT(changeMargins(int,int,int,int)));
connect(m_margins, SIGNAL(bottomChanged(int,int,int,int)),
this, SLOT(changeMargins(int,int,int,int)));
connect(m_margins, SIGNAL(leftChanged(int,int,int,int)),
this, SLOT(changeMargins(int,int,int,int)));
connect(m_margins, SIGNAL(rightChanged(int,int,int,int)),
this, SLOT(changeMargins(int,int,int,int)));
connect(m_chart->d_ptr->m_dataset, SIGNAL(seriesAdded(QAbstractSeries*)), this, SLOT(handleSeriesAdded(QAbstractSeries*)));
connect(m_chart->d_ptr->m_dataset, SIGNAL(seriesRemoved(QAbstractSeries*)), this, SIGNAL(seriesRemoved(QAbstractSeries*)));
connect(m_chart, &QChart::plotAreaChanged, this, &DeclarativeChart::plotAreaChanged);
}
void DeclarativeChart::handleSeriesAdded(QAbstractSeries *series)
{
emit seriesAdded(series);
}
void DeclarativeChart::changeMargins(int top, int bottom, int left, int right)
{
m_chart->setMargins(QMargins(left, top, right, bottom));
emit marginsChanged();
}
DeclarativeChart::~DeclarativeChart()
{
delete m_chart;
m_sceneImageLock.lock();
delete m_currentSceneImage;
m_currentSceneImage = 0;
m_sceneImageLock.unlock();
}
void DeclarativeChart::childEvent(QChildEvent *event)
{
if (event->type() == QEvent::ChildAdded) {
if (qobject_cast<QAbstractSeries *>(event->child())) {
m_chart->addSeries(qobject_cast<QAbstractSeries *>(event->child()));
}
}
}
void DeclarativeChart::componentComplete()
{
foreach (QObject *child, children()) {
if (qobject_cast<QAbstractSeries *>(child)) {
// Add series to the chart
QAbstractSeries *series = qobject_cast<QAbstractSeries *>(child);
m_chart->addSeries(series);
// Connect to axis changed signals (unless this is a pie series)
if (!qobject_cast<DeclarativePieSeries *>(series)) {
connect(series, SIGNAL(axisXChanged(QAbstractAxis*)), this, SLOT(handleAxisXSet(QAbstractAxis*)));
connect(series, SIGNAL(axisXTopChanged(QAbstractAxis*)), this, SLOT(handleAxisXTopSet(QAbstractAxis*)));
connect(series, SIGNAL(axisYChanged(QAbstractAxis*)), this, SLOT(handleAxisYSet(QAbstractAxis*)));
connect(series, SIGNAL(axisYRightChanged(QAbstractAxis*)), this, SLOT(handleAxisYRightSet(QAbstractAxis*)));
}
initializeAxes(series);
}
}
QQuickItem::componentComplete();
}
void DeclarativeChart::seriesAxisAttachHelper(QAbstractSeries *series, QAbstractAxis *axis,
Qt::Orientations orientation,
Qt::Alignment alignment)
{
if (!series->attachedAxes().contains(axis)) {
// Remove & delete old axes that are not attached to any other series
foreach (QAbstractAxis* oldAxis, m_chart->axes(orientation, series)) {
bool otherAttachments = false;
if (oldAxis != axis) {
foreach (QAbstractSeries *oldSeries, m_chart->series()) {
if (oldSeries != series && oldSeries->attachedAxes().contains(oldAxis)) {
otherAttachments = true;
break;
}
}
if (!otherAttachments) {
m_chart->removeAxis(oldAxis);
delete oldAxis;
}
}
}
if (!m_chart->axes(orientation).contains(axis))
m_chart->addAxis(axis, alignment);
series->attachAxis(axis);
}
}
void DeclarativeChart::handleAxisXSet(QAbstractAxis *axis)
{
QAbstractSeries *s = qobject_cast<QAbstractSeries *>(sender());
if (axis && s) {
seriesAxisAttachHelper(s, axis, Qt::Horizontal, Qt::AlignBottom);
} else {
qWarning() << "Trying to set axisX to null.";
}
}
void DeclarativeChart::handleAxisXTopSet(QAbstractAxis *axis)
{
QAbstractSeries *s = qobject_cast<QAbstractSeries *>(sender());
if (axis && s) {
seriesAxisAttachHelper(s, axis, Qt::Horizontal, Qt::AlignTop);
} else {
qWarning() << "Trying to set axisXTop to null.";
}
}
void DeclarativeChart::handleAxisYSet(QAbstractAxis *axis)
{
QAbstractSeries *s = qobject_cast<QAbstractSeries *>(sender());
if (axis && s) {
seriesAxisAttachHelper(s, axis, Qt::Vertical, Qt::AlignLeft);
} else {
qWarning() << "Trying to set axisY to null.";
}
}
void DeclarativeChart::handleAxisYRightSet(QAbstractAxis *axis)
{
QAbstractSeries *s = qobject_cast<QAbstractSeries *>(sender());
if (axis && s) {
seriesAxisAttachHelper(s, axis, Qt::Vertical, Qt::AlignRight);
} else {
qWarning() << "Trying to set axisYRight to null.";
}
}
void DeclarativeChart::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry)
{
if (newGeometry.isValid()) {
if (newGeometry.width() > 0 && newGeometry.height() > 0) {
m_chart->resize(newGeometry.width(), newGeometry.height());
}
}
QQuickItem::geometryChanged(newGeometry, oldGeometry);
}
void DeclarativeChart::sceneChanged(QList<QRectF> region)
{
Q_UNUSED(region);
if (m_guiThreadId == m_paintThreadId) {
// Rendering in gui thread, no need for shenannigans, just update
update();
} else {
// Multi-threaded rendering, need to ensure scene is actually rendered in gui thread
if (!m_updatePending) {
m_updatePending = true;
// Do async render to avoid some unnecessary renders.
QTimer::singleShot(0, this, SLOT(renderScene()));
}
}
}
void DeclarativeChart::renderScene()
{
m_updatePending = false;
m_sceneImageLock.lock();
delete m_currentSceneImage;
m_currentSceneImage = new QImage(m_chart->size().toSize(), QImage::Format_ARGB32);
m_currentSceneImage->fill(Qt::transparent);
QPainter painter(m_currentSceneImage);
if (antialiasing())
painter.setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::SmoothPixmapTransform);
QRect renderRect(QPoint(0, 0), m_chart->size().toSize());
m_scene->render(&painter, renderRect, renderRect);
m_sceneImageLock.unlock();
update();
}
void DeclarativeChart::paint(QPainter *painter)
{
if (!m_paintThreadId) {
m_paintThreadId = QThread::currentThreadId();
if (m_guiThreadId == m_paintThreadId) {
// No need for scene image in single threaded rendering, so delete
// the one that got made by default before the rendering type was
// detected.
delete m_currentSceneImage;
m_currentSceneImage = 0;
}
}
if (m_guiThreadId == m_paintThreadId) {
QRectF renderRect(QPointF(0, 0), m_chart->size());
m_scene->render(painter, renderRect, renderRect);
} else {
m_sceneImageLock.lock();
if (m_currentSceneImage) {
QRect imageRect(QPoint(0, 0), m_currentSceneImage->size());
QRect itemRect(QPoint(0, 0), QSize(width(), height()));
painter->drawImage(itemRect, *m_currentSceneImage, imageRect);
}
m_sceneImageLock.unlock();
}
}
void DeclarativeChart::mousePressEvent(QMouseEvent *event)
{
m_mousePressScenePoint = event->pos();
m_mousePressScreenPoint = event->globalPos();
m_lastMouseMoveScenePoint = m_mousePressScenePoint;
m_lastMouseMoveScreenPoint = m_mousePressScreenPoint;
m_mousePressButton = event->button();
m_mousePressButtons = event->buttons();
QGraphicsSceneMouseEvent mouseEvent(QEvent::GraphicsSceneMousePress);
mouseEvent.setWidget(0);
mouseEvent.setButtonDownScenePos(m_mousePressButton, m_mousePressScenePoint);
mouseEvent.setButtonDownScreenPos(m_mousePressButton, m_mousePressScreenPoint);
mouseEvent.setScenePos(m_mousePressScenePoint);
mouseEvent.setScreenPos(m_mousePressScreenPoint);
mouseEvent.setLastScenePos(m_lastMouseMoveScenePoint);
mouseEvent.setLastScreenPos(m_lastMouseMoveScreenPoint);
mouseEvent.setButtons(m_mousePressButtons);
mouseEvent.setButton(m_mousePressButton);
mouseEvent.setModifiers(event->modifiers());
mouseEvent.setAccepted(false);
QApplication::sendEvent(m_scene, &mouseEvent);
}
void DeclarativeChart::mouseReleaseEvent(QMouseEvent *event)
{
QGraphicsSceneMouseEvent mouseEvent(QEvent::GraphicsSceneMouseRelease);
mouseEvent.setWidget(0);
mouseEvent.setButtonDownScenePos(m_mousePressButton, m_mousePressScenePoint);
mouseEvent.setButtonDownScreenPos(m_mousePressButton, m_mousePressScreenPoint);
mouseEvent.setScenePos(event->pos());
mouseEvent.setScreenPos(event->globalPos());
mouseEvent.setLastScenePos(m_lastMouseMoveScenePoint);
mouseEvent.setLastScreenPos(m_lastMouseMoveScreenPoint);
mouseEvent.setButtons(event->buttons());
mouseEvent.setButton(event->button());
mouseEvent.setModifiers(event->modifiers());
mouseEvent.setAccepted(false);
QApplication::sendEvent(m_scene, &mouseEvent);
m_mousePressButtons = event->buttons();
m_mousePressButton = Qt::NoButton;
}
void DeclarativeChart::hoverMoveEvent(QHoverEvent *event)
{
// Convert hover move to mouse move, since we don't seem to get actual mouse move events.
// QGraphicsScene generates hover events from mouse move events, so we don't need
// to pass hover events there.
QGraphicsSceneMouseEvent mouseEvent(QEvent::GraphicsSceneMouseMove);
mouseEvent.setWidget(0);
mouseEvent.setButtonDownScenePos(m_mousePressButton, m_mousePressScenePoint);
mouseEvent.setButtonDownScreenPos(m_mousePressButton, m_mousePressScreenPoint);
mouseEvent.setScenePos(event->pos());
// Hover events do not have global pos in them, and the screen position doesn't seem to
// matter anyway in this use case, so just pass event pos instead of trying to
// calculate the real screen position.
mouseEvent.setScreenPos(event->pos());
mouseEvent.setLastScenePos(m_lastMouseMoveScenePoint);
mouseEvent.setLastScreenPos(m_lastMouseMoveScreenPoint);
mouseEvent.setButtons(m_mousePressButtons);
mouseEvent.setButton(m_mousePressButton);
mouseEvent.setModifiers(event->modifiers());
m_lastMouseMoveScenePoint = mouseEvent.scenePos();
m_lastMouseMoveScreenPoint = mouseEvent.screenPos();
mouseEvent.setAccepted(false);
QApplication::sendEvent(m_scene, &mouseEvent);
}
void DeclarativeChart::mouseDoubleClickEvent(QMouseEvent *event)
{
m_mousePressScenePoint = event->pos();
m_mousePressScreenPoint = event->globalPos();
m_lastMouseMoveScenePoint = m_mousePressScenePoint;
m_lastMouseMoveScreenPoint = m_mousePressScreenPoint;
m_mousePressButton = event->button();
m_mousePressButtons = event->buttons();
QGraphicsSceneMouseEvent mouseEvent(QEvent::GraphicsSceneMouseDoubleClick);
mouseEvent.setWidget(0);
mouseEvent.setButtonDownScenePos(m_mousePressButton, m_mousePressScenePoint);
mouseEvent.setButtonDownScreenPos(m_mousePressButton, m_mousePressScreenPoint);
mouseEvent.setScenePos(m_mousePressScenePoint);
mouseEvent.setScreenPos(m_mousePressScreenPoint);
mouseEvent.setLastScenePos(m_lastMouseMoveScenePoint);
mouseEvent.setLastScreenPos(m_lastMouseMoveScreenPoint);
mouseEvent.setButtons(m_mousePressButtons);
mouseEvent.setButton(m_mousePressButton);
mouseEvent.setModifiers(event->modifiers());
mouseEvent.setAccepted(false);
QApplication::sendEvent(m_scene, &mouseEvent);
}
void DeclarativeChart::handleAntialiasingChanged(bool enable)
{
setAntialiasing(enable);
}
void DeclarativeChart::setTheme(DeclarativeChart::Theme theme)
{
QChart::ChartTheme chartTheme = (QChart::ChartTheme) theme;
if (chartTheme != m_chart->theme())
m_chart->setTheme(chartTheme);
}
DeclarativeChart::Theme DeclarativeChart::theme()
{
return (DeclarativeChart::Theme) m_chart->theme();
}
void DeclarativeChart::setAnimationOptions(DeclarativeChart::Animation animations)
{
QChart::AnimationOption animationOptions = (QChart::AnimationOption) animations;
if (animationOptions != m_chart->animationOptions())
m_chart->setAnimationOptions(animationOptions);
}
DeclarativeChart::Animation DeclarativeChart::animationOptions()
{
if (m_chart->animationOptions().testFlag(QChart::AllAnimations))
return DeclarativeChart::AllAnimations;
else if (m_chart->animationOptions().testFlag(QChart::GridAxisAnimations))
return DeclarativeChart::GridAxisAnimations;
else if (m_chart->animationOptions().testFlag(QChart::SeriesAnimations))
return DeclarativeChart::SeriesAnimations;
else
return DeclarativeChart::NoAnimation;
}
void DeclarativeChart::setTitle(QString title)
{
if (title != m_chart->title())
m_chart->setTitle(title);
}
QString DeclarativeChart::title()
{
return m_chart->title();
}
QAbstractAxis *DeclarativeChart::axisX(QAbstractSeries *series)
{
QList<QAbstractAxis *> axes = m_chart->axes(Qt::Horizontal, series);
if (axes.count())
return axes[0];
return 0;
}
QAbstractAxis *DeclarativeChart::axisY(QAbstractSeries *series)
{
QList<QAbstractAxis *> axes = m_chart->axes(Qt::Vertical, series);
if (axes.count())
return axes[0];
return 0;
}
QLegend *DeclarativeChart::legend()
{
return m_chart->legend();
}
void DeclarativeChart::setTitleColor(QColor color)
{
QBrush b = m_chart->titleBrush();
if (color != b.color()) {
b.setColor(color);
m_chart->setTitleBrush(b);
emit titleColorChanged(color);
}
}
QFont DeclarativeChart::titleFont() const
{
return m_chart->titleFont();
}
void DeclarativeChart::setTitleFont(const QFont &font)
{
m_chart->setTitleFont(font);
}
QColor DeclarativeChart::titleColor()
{
return m_chart->titleBrush().color();
}
void DeclarativeChart::setBackgroundColor(QColor color)
{
QBrush b = m_chart->backgroundBrush();
if (b.style() != Qt::SolidPattern || color != b.color()) {
b.setStyle(Qt::SolidPattern);
b.setColor(color);
m_chart->setBackgroundBrush(b);
emit backgroundColorChanged();
}
}
QColor DeclarativeChart::backgroundColor()
{
return m_chart->backgroundBrush().color();
}
void QtCharts::DeclarativeChart::setPlotAreaColor(QColor color)
{
QBrush b = m_chart->plotAreaBackgroundBrush();
if (b.style() != Qt::SolidPattern || color != b.color()) {
b.setStyle(Qt::SolidPattern);
b.setColor(color);
m_chart->setPlotAreaBackgroundBrush(b);
m_chart->setPlotAreaBackgroundVisible(true);
emit plotAreaColorChanged();
}
}
QColor QtCharts::DeclarativeChart::plotAreaColor()
{
return m_chart->plotAreaBackgroundBrush().color();
}
void DeclarativeChart::setLocalizeNumbers(bool localize)
{
if (m_chart->localizeNumbers() != localize) {
m_chart->setLocalizeNumbers(localize);
emit localizeNumbersChanged();
}
}
bool DeclarativeChart::localizeNumbers() const
{
return m_chart->localizeNumbers();
}
void QtCharts::DeclarativeChart::setLocale(const QLocale &locale)
{
if (m_chart->locale() != locale) {
m_chart->setLocale(locale);
emit localeChanged();
}
}
QLocale QtCharts::DeclarativeChart::locale() const
{
return m_chart->locale();
}
int DeclarativeChart::count()
{
return m_chart->series().count();
}
void DeclarativeChart::setDropShadowEnabled(bool enabled)
{
if (enabled != m_chart->isDropShadowEnabled()) {
m_chart->setDropShadowEnabled(enabled);
dropShadowEnabledChanged(enabled);
}
}
bool DeclarativeChart::dropShadowEnabled()
{
return m_chart->isDropShadowEnabled();
}
qreal DeclarativeChart::backgroundRoundness() const
{
return m_chart->backgroundRoundness();
}
void DeclarativeChart::setBackgroundRoundness(qreal diameter)
{
if (m_chart->backgroundRoundness() != diameter) {
m_chart->setBackgroundRoundness(diameter);
emit backgroundRoundnessChanged(diameter);
}
}
void DeclarativeChart::zoom(qreal factor)
{
m_chart->zoom(factor);
}
void DeclarativeChart::scrollLeft(qreal pixels)
{
m_chart->scroll(-pixels, 0);
}
void DeclarativeChart::scrollRight(qreal pixels)
{
m_chart->scroll(pixels, 0);
}
void DeclarativeChart::scrollUp(qreal pixels)
{
m_chart->scroll(0, pixels);
}
void DeclarativeChart::scrollDown(qreal pixels)
{
m_chart->scroll(0, -pixels);
}
QQmlListProperty<QAbstractAxis> DeclarativeChart::axes()
{
return QQmlListProperty<QAbstractAxis>(this, 0,
&DeclarativeChart::axesAppendFunc,
&DeclarativeChart::axesCountFunc,
&DeclarativeChart::axesAtFunc,
&DeclarativeChart::axesClearFunc);
}
void DeclarativeChart::axesAppendFunc(QQmlListProperty<QAbstractAxis> *list, QAbstractAxis *element)
{
// Empty implementation
Q_UNUSED(list);
Q_UNUSED(element);
}
int DeclarativeChart::axesCountFunc(QQmlListProperty<QAbstractAxis> *list)
{
if (qobject_cast<DeclarativeChart *>(list->object)) {
DeclarativeChart *chart = qobject_cast<DeclarativeChart *>(list->object);
return chart->m_chart->axes(Qt::Horizontal | Qt::Vertical).count();
}
return 0;
}
QAbstractAxis *DeclarativeChart::axesAtFunc(QQmlListProperty<QAbstractAxis> *list, int index)
{
if (qobject_cast<DeclarativeChart *>(list->object)) {
DeclarativeChart *chart = qobject_cast<DeclarativeChart *>(list->object);
QList<QAbstractAxis *> axes = chart->m_chart->axes(Qt::Horizontal | Qt::Vertical, chart->m_chart->series()[0]);
return axes.at(index);
}
return 0;
}
void DeclarativeChart::axesClearFunc(QQmlListProperty<QAbstractAxis> *list)
{
// Empty implementation
Q_UNUSED(list);
}
QAbstractSeries *DeclarativeChart::series(int index)
{
if (index < m_chart->series().count()) {
return m_chart->series().at(index);
}
return 0;
}
QAbstractSeries *DeclarativeChart::series(QString seriesName)
{
foreach (QAbstractSeries *series, m_chart->series()) {
if (series->name() == seriesName)
return series;
}
return 0;
}
QAbstractSeries *DeclarativeChart::createSeries(int type, QString name, QAbstractAxis *axisX, QAbstractAxis *axisY)
{
QAbstractSeries *series = 0;
switch (type) {
case DeclarativeChart::SeriesTypeLine:
series = new DeclarativeLineSeries();
break;
case DeclarativeChart::SeriesTypeArea: {
DeclarativeAreaSeries *area = new DeclarativeAreaSeries();
DeclarativeLineSeries *line = new DeclarativeLineSeries();
line->setParent(area);
area->setUpperSeries(line);
series = area;
break;
}
case DeclarativeChart::SeriesTypeStackedBar:
series = new DeclarativeStackedBarSeries();
break;
case DeclarativeChart::SeriesTypePercentBar:
series = new DeclarativePercentBarSeries();
break;
case DeclarativeChart::SeriesTypeBar:
series = new DeclarativeBarSeries();
break;
case DeclarativeChart::SeriesTypeHorizontalBar:
series = new DeclarativeHorizontalBarSeries();
break;
case DeclarativeChart::SeriesTypeHorizontalPercentBar:
series = new DeclarativeHorizontalPercentBarSeries();
break;
case DeclarativeChart::SeriesTypeHorizontalStackedBar:
series = new DeclarativeHorizontalStackedBarSeries();
break;
case DeclarativeChart::SeriesTypeBoxPlot:
series = new DeclarativeBoxPlotSeries();
break;
case DeclarativeChart::SeriesTypePie:
series = new DeclarativePieSeries();
break;
case DeclarativeChart::SeriesTypeScatter:
series = new DeclarativeScatterSeries();
break;
case DeclarativeChart::SeriesTypeSpline:
series = new DeclarativeSplineSeries();
break;
default:
qWarning() << "Illegal series type";
}
if (series) {
// Connect to axis changed signals (unless this is a pie series)
if (!qobject_cast<DeclarativePieSeries *>(series)) {
connect(series, SIGNAL(axisXChanged(QAbstractAxis*)), this, SLOT(handleAxisXSet(QAbstractAxis*)));
connect(series, SIGNAL(axisXTopChanged(QAbstractAxis*)), this, SLOT(handleAxisXSet(QAbstractAxis*)));
connect(series, SIGNAL(axisYChanged(QAbstractAxis*)), this, SLOT(handleAxisYSet(QAbstractAxis*)));
connect(series, SIGNAL(axisYRightChanged(QAbstractAxis*)), this, SLOT(handleAxisYRightSet(QAbstractAxis*)));
}
series->setName(name);
m_chart->addSeries(series);
if (!axisX || !axisY)
initializeAxes(series);
if (axisX)
setAxisX(axisX, series);
if (axisY)
setAxisY(axisY, series);
}
return series;
}
void DeclarativeChart::removeSeries(QAbstractSeries *series)
{
if (series)
m_chart->removeSeries(series);
else
qWarning("removeSeries: cannot remove null");
}
void DeclarativeChart::setAxisX(QAbstractAxis *axis, QAbstractSeries *series)
{
if (axis && series)
seriesAxisAttachHelper(series, axis, Qt::Horizontal, Qt::AlignBottom);
}
void DeclarativeChart::setAxisY(QAbstractAxis *axis, QAbstractSeries *series)
{
if (axis && series)
seriesAxisAttachHelper(series, axis, Qt::Vertical, Qt::AlignLeft);
}
QAbstractAxis *DeclarativeChart::defaultAxis(Qt::Orientation orientation, QAbstractSeries *series)
{
if (!series) {
qWarning() << "No axis type defined for null series";
return 0;
}
foreach (QAbstractAxis *existingAxis, m_chart->axes(orientation)) {
if (existingAxis->type() == series->d_ptr->defaultAxisType(orientation))
return existingAxis;
}
switch (series->d_ptr->defaultAxisType(orientation)) {
case QAbstractAxis::AxisTypeValue:
return new QValueAxis(this);
case QAbstractAxis::AxisTypeBarCategory:
return new QBarCategoryAxis(this);
case QAbstractAxis::AxisTypeCategory:
return new QCategoryAxis(this);
#ifndef QT_ON_ARM
case QAbstractAxis::AxisTypeDateTime:
return new QDateTimeAxis(this);
#endif
case QAbstractAxis::AxisTypeLogValue:
return new QLogValueAxis(this);
default:
// assume AxisTypeNoAxis
return 0;
}
}
void DeclarativeChart::initializeAxes(QAbstractSeries *series)
{
if (qobject_cast<DeclarativeLineSeries *>(series))
doInitializeAxes(series, qobject_cast<DeclarativeLineSeries *>(series)->m_axes);
else if (qobject_cast<DeclarativeScatterSeries *>(series))
doInitializeAxes(series, qobject_cast<DeclarativeScatterSeries *>(series)->m_axes);
else if (qobject_cast<DeclarativeSplineSeries *>(series))
doInitializeAxes(series, qobject_cast<DeclarativeSplineSeries *>(series)->m_axes);
else if (qobject_cast<DeclarativeAreaSeries *>(series))
doInitializeAxes(series, qobject_cast<DeclarativeAreaSeries *>(series)->m_axes);
else if (qobject_cast<DeclarativeBarSeries *>(series))
doInitializeAxes(series, qobject_cast<DeclarativeBarSeries *>(series)->m_axes);
else if (qobject_cast<DeclarativeStackedBarSeries *>(series))
doInitializeAxes(series, qobject_cast<DeclarativeStackedBarSeries *>(series)->m_axes);
else if (qobject_cast<DeclarativePercentBarSeries *>(series))
doInitializeAxes(series, qobject_cast<DeclarativePercentBarSeries *>(series)->m_axes);
else if (qobject_cast<DeclarativeHorizontalBarSeries *>(series))
doInitializeAxes(series, qobject_cast<DeclarativeHorizontalBarSeries *>(series)->m_axes);
else if (qobject_cast<DeclarativeHorizontalStackedBarSeries *>(series))
doInitializeAxes(series, qobject_cast<DeclarativeHorizontalStackedBarSeries *>(series)->m_axes);
else if (qobject_cast<DeclarativeHorizontalPercentBarSeries *>(series))
doInitializeAxes(series, qobject_cast<DeclarativeHorizontalPercentBarSeries *>(series)->m_axes);
else if (qobject_cast<DeclarativeBoxPlotSeries *>(series))
doInitializeAxes(series, qobject_cast<DeclarativeBoxPlotSeries *>(series)->m_axes);
// else: do nothing
}
void DeclarativeChart::doInitializeAxes(QAbstractSeries *series, DeclarativeAxes *axes)
{
// Initialize axis X
if (axes->axisX())
axes->emitAxisXChanged();
else if (axes->axisXTop())
axes->emitAxisXTopChanged();
else
axes->setAxisX(defaultAxis(Qt::Horizontal, series));
// Initialize axis Y
if (axes->axisY())
axes->emitAxisYChanged();
else if (axes->axisYRight())
axes->emitAxisYRightChanged();
else
axes->setAxisY(defaultAxis(Qt::Vertical, series));
}
#include "moc_declarativechart.cpp"
QT_CHARTS_END_NAMESPACE