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Explicitly update GLWidget when we set new points...
Explicitly update GLWidget when we set new points QOpenGLWidget was modified to not trigger some extra paint calls, which charts used to rely on, so now we do explicit updates instead. Change-Id: Ibe06c2f88ac7efe4e61351d582f2eff9d350f073 Task-number: QTBUG-51000 Reviewed-by: Tomi Korpipää <tomi.korpipaa@theqtcompany.com> Reviewed-by: Mika Salmela <mika.salmela@theqtcompany.com> Reviewed-by: Miikka Heikkinen <miikka.heikkinen@theqtcompany.com>

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r2865:672ea1cb191f
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chartpresenter.cpp
577 lines | 16.4 KiB | text/x-c | CppLexer
/******************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Charts module.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
******************************************************************************/
#include <private/chartpresenter_p.h>
#include <QtCharts/QChart>
#include <private/chartitem_p.h>
#include <private/qchart_p.h>
#include <QtCharts/QAbstractAxis>
#include <private/qabstractaxis_p.h>
#include <private/chartdataset_p.h>
#include <private/chartanimation_p.h>
#include <private/qabstractseries_p.h>
#include <QtCharts/QAreaSeries>
#include <private/chartaxiselement_p.h>
#include <private/chartbackground_p.h>
#include <private/cartesianchartlayout_p.h>
#include <private/polarchartlayout_p.h>
#include <private/charttitle_p.h>
#include <QtCore/QTimer>
#include <QtGui/QTextDocument>
#include <QtWidgets/QGraphicsScene>
#include <QtWidgets/QGraphicsView>
QT_CHARTS_BEGIN_NAMESPACE
ChartPresenter::ChartPresenter(QChart *chart, QChart::ChartType type)
: QObject(chart),
m_chart(chart),
m_options(QChart::NoAnimation),
m_animationDuration(ChartAnimationDuration),
m_animationCurve(QEasingCurve::OutQuart),
m_state(ShowState),
m_background(0),
m_plotAreaBackground(0),
m_title(0),
m_localizeNumbers(false)
#ifndef QT_NO_OPENGL
, m_glWidget(0)
, m_glUseWidget(true)
#endif
{
if (type == QChart::ChartTypeCartesian)
m_layout = new CartesianChartLayout(this);
else if (type == QChart::ChartTypePolar)
m_layout = new PolarChartLayout(this);
Q_ASSERT(m_layout);
}
ChartPresenter::~ChartPresenter()
{
#ifndef QT_NO_OPENGL
delete m_glWidget.data();
#endif
}
void ChartPresenter::setGeometry(const QRectF rect)
{
if (m_rect != rect) {
m_rect = rect;
foreach (ChartItem *chart, m_chartItems) {
chart->domain()->setSize(rect.size());
chart->setPos(rect.topLeft());
}
#ifndef QT_NO_OPENGL
if (!m_glWidget.isNull())
m_glWidget->setGeometry(m_rect.toRect());
#endif
emit plotAreaChanged(m_rect);
}
}
QRectF ChartPresenter::geometry() const
{
return m_rect;
}
void ChartPresenter::handleAxisAdded(QAbstractAxis *axis)
{
axis->d_ptr->initializeGraphics(rootItem());
axis->d_ptr->initializeAnimations(m_options, m_animationDuration, m_animationCurve);
ChartAxisElement *item = axis->d_ptr->axisItem();
item->setPresenter(this);
item->setThemeManager(m_chart->d_ptr->m_themeManager);
m_axisItems<<item;
m_axes<<axis;
m_layout->invalidate();
}
void ChartPresenter::handleAxisRemoved(QAbstractAxis *axis)
{
ChartAxisElement *item = axis->d_ptr->m_item.take();
if (item->animation())
item->animation()->stopAndDestroyLater();
item->hide();
item->disconnect();
item->deleteLater();
m_axisItems.removeAll(item);
m_axes.removeAll(axis);
m_layout->invalidate();
}
void ChartPresenter::handleSeriesAdded(QAbstractSeries *series)
{
series->d_ptr->initializeGraphics(rootItem());
series->d_ptr->initializeAnimations(m_options, m_animationDuration, m_animationCurve);
series->d_ptr->setPresenter(this);
ChartItem *chart = series->d_ptr->chartItem();
chart->setPresenter(this);
chart->setThemeManager(m_chart->d_ptr->m_themeManager);
chart->setDataSet(m_chart->d_ptr->m_dataset);
chart->domain()->setSize(m_rect.size());
chart->setPos(m_rect.topLeft());
chart->handleDomainUpdated(); //this could be moved to intializeGraphics when animator is refactored
m_chartItems<<chart;
m_series<<series;
m_layout->invalidate();
}
void ChartPresenter::handleSeriesRemoved(QAbstractSeries *series)
{
ChartItem *chart = series->d_ptr->m_item.take();
chart->hide();
chart->disconnect();
chart->deleteLater();
if (chart->animation())
chart->animation()->stopAndDestroyLater();
m_chartItems.removeAll(chart);
m_series.removeAll(series);
m_layout->invalidate();
}
void ChartPresenter::setAnimationOptions(QChart::AnimationOptions options)
{
if (m_options != options) {
QChart::AnimationOptions oldOptions = m_options;
m_options = options;
if (options.testFlag(QChart::SeriesAnimations) != oldOptions.testFlag(QChart::SeriesAnimations)) {
foreach (QAbstractSeries *series, m_series)
series->d_ptr->initializeAnimations(m_options, m_animationDuration,
m_animationCurve);
}
if (options.testFlag(QChart::GridAxisAnimations) != oldOptions.testFlag(QChart::GridAxisAnimations)) {
foreach (QAbstractAxis *axis, m_axes)
axis->d_ptr->initializeAnimations(m_options, m_animationDuration, m_animationCurve);
}
m_layout->invalidate(); // So that existing animations don't just stop halfway
}
}
void ChartPresenter::setAnimationDuration(int msecs)
{
if (m_animationDuration != msecs) {
m_animationDuration = msecs;
foreach (QAbstractSeries *series, m_series)
series->d_ptr->initializeAnimations(m_options, m_animationDuration, m_animationCurve);
foreach (QAbstractAxis *axis, m_axes)
axis->d_ptr->initializeAnimations(m_options, m_animationDuration, m_animationCurve);
m_layout->invalidate(); // So that existing animations don't just stop halfway
}
}
void ChartPresenter::setAnimationEasingCurve(const QEasingCurve &curve)
{
if (m_animationCurve != curve) {
m_animationCurve = curve;
foreach (QAbstractSeries *series, m_series)
series->d_ptr->initializeAnimations(m_options, m_animationDuration, m_animationCurve);
foreach (QAbstractAxis *axis, m_axes)
axis->d_ptr->initializeAnimations(m_options, m_animationDuration, m_animationCurve);
m_layout->invalidate(); // So that existing animations don't just stop halfway
}
}
void ChartPresenter::setState(State state,QPointF point)
{
m_state=state;
m_statePoint=point;
}
QChart::AnimationOptions ChartPresenter::animationOptions() const
{
return m_options;
}
void ChartPresenter::createBackgroundItem()
{
if (!m_background) {
m_background = new ChartBackground(rootItem());
m_background->setPen(Qt::NoPen); // Theme doesn't touch pen so don't use default
m_background->setBrush(QChartPrivate::defaultBrush());
m_background->setZValue(ChartPresenter::BackgroundZValue);
}
}
void ChartPresenter::createPlotAreaBackgroundItem()
{
if (!m_plotAreaBackground) {
if (m_chart->chartType() == QChart::ChartTypeCartesian)
m_plotAreaBackground = new QGraphicsRectItem(rootItem());
else
m_plotAreaBackground = new QGraphicsEllipseItem(rootItem());
// Use transparent pen instead of Qt::NoPen, as Qt::NoPen causes
// antialising artifacts with axis lines for some reason.
m_plotAreaBackground->setPen(QPen(Qt::transparent));
m_plotAreaBackground->setBrush(Qt::NoBrush);
m_plotAreaBackground->setZValue(ChartPresenter::PlotAreaZValue);
m_plotAreaBackground->setVisible(false);
}
}
void ChartPresenter::createTitleItem()
{
if (!m_title) {
m_title = new ChartTitle(rootItem());
m_title->setZValue(ChartPresenter::BackgroundZValue);
}
}
void ChartPresenter::startAnimation(ChartAnimation *animation)
{
animation->stop();
QTimer::singleShot(0, animation, SLOT(startChartAnimation()));
}
void ChartPresenter::setBackgroundBrush(const QBrush &brush)
{
createBackgroundItem();
m_background->setBrush(brush);
m_layout->invalidate();
}
QBrush ChartPresenter::backgroundBrush() const
{
if (!m_background)
return QBrush();
return m_background->brush();
}
void ChartPresenter::setBackgroundPen(const QPen &pen)
{
createBackgroundItem();
m_background->setPen(pen);
m_layout->invalidate();
}
QPen ChartPresenter::backgroundPen() const
{
if (!m_background)
return QPen();
return m_background->pen();
}
void ChartPresenter::setBackgroundRoundness(qreal diameter)
{
createBackgroundItem();
m_background->setDiameter(diameter);
m_layout->invalidate();
}
qreal ChartPresenter::backgroundRoundness() const
{
if (!m_background)
return 0;
return m_background->diameter();
}
void ChartPresenter::setPlotAreaBackgroundBrush(const QBrush &brush)
{
createPlotAreaBackgroundItem();
m_plotAreaBackground->setBrush(brush);
m_layout->invalidate();
}
QBrush ChartPresenter::plotAreaBackgroundBrush() const
{
if (!m_plotAreaBackground)
return QBrush();
return m_plotAreaBackground->brush();
}
void ChartPresenter::setPlotAreaBackgroundPen(const QPen &pen)
{
createPlotAreaBackgroundItem();
m_plotAreaBackground->setPen(pen);
m_layout->invalidate();
}
QPen ChartPresenter::plotAreaBackgroundPen() const
{
if (!m_plotAreaBackground)
return QPen();
return m_plotAreaBackground->pen();
}
void ChartPresenter::setTitle(const QString &title)
{
createTitleItem();
m_title->setText(title);
m_layout->invalidate();
}
QString ChartPresenter::title() const
{
if (!m_title)
return QString();
return m_title->text();
}
void ChartPresenter::setTitleFont(const QFont &font)
{
createTitleItem();
m_title->setFont(font);
m_layout->invalidate();
}
QFont ChartPresenter::titleFont() const
{
if (!m_title)
return QFont();
return m_title->font();
}
void ChartPresenter::setTitleBrush(const QBrush &brush)
{
createTitleItem();
m_title->setDefaultTextColor(brush.color());
m_layout->invalidate();
}
QBrush ChartPresenter::titleBrush() const
{
if (!m_title)
return QBrush();
return QBrush(m_title->defaultTextColor());
}
void ChartPresenter::setBackgroundVisible(bool visible)
{
createBackgroundItem();
m_background->setVisible(visible);
}
bool ChartPresenter::isBackgroundVisible() const
{
if (!m_background)
return false;
return m_background->isVisible();
}
void ChartPresenter::setPlotAreaBackgroundVisible(bool visible)
{
createPlotAreaBackgroundItem();
m_plotAreaBackground->setVisible(visible);
}
bool ChartPresenter::isPlotAreaBackgroundVisible() const
{
if (!m_plotAreaBackground)
return false;
return m_plotAreaBackground->isVisible();
}
void ChartPresenter::setBackgroundDropShadowEnabled(bool enabled)
{
createBackgroundItem();
m_background->setDropShadowEnabled(enabled);
}
bool ChartPresenter::isBackgroundDropShadowEnabled() const
{
if (!m_background)
return false;
return m_background->isDropShadowEnabled();
}
void ChartPresenter::setLocalizeNumbers(bool localize)
{
m_localizeNumbers = localize;
m_layout->invalidate();
}
void ChartPresenter::setLocale(const QLocale &locale)
{
m_locale = locale;
m_layout->invalidate();
}
AbstractChartLayout *ChartPresenter::layout()
{
return m_layout;
}
QLegend *ChartPresenter::legend()
{
return m_chart->legend();
}
void ChartPresenter::setVisible(bool visible)
{
m_chart->setVisible(visible);
}
ChartBackground *ChartPresenter::backgroundElement()
{
return m_background;
}
QAbstractGraphicsShapeItem *ChartPresenter::plotAreaElement()
{
return m_plotAreaBackground;
}
QList<ChartAxisElement *> ChartPresenter::axisItems() const
{
return m_axisItems;
}
QList<ChartItem *> ChartPresenter::chartItems() const
{
return m_chartItems;
}
ChartTitle *ChartPresenter::titleElement()
{
return m_title;
}
QRectF ChartPresenter::textBoundingRect(const QFont &font, const QString &text, qreal angle)
{
static QGraphicsTextItem dummyTextItem;
static bool initMargin = true;
if (initMargin) {
dummyTextItem.document()->setDocumentMargin(textMargin());
initMargin = false;
}
dummyTextItem.setFont(font);
dummyTextItem.setHtml(text);
QRectF boundingRect = dummyTextItem.boundingRect();
// Take rotation into account
if (angle) {
QTransform transform;
transform.rotate(angle);
boundingRect = transform.mapRect(boundingRect);
}
return boundingRect;
}
// boundingRect parameter returns the rotated bounding rect of the text
QString ChartPresenter::truncatedText(const QFont &font, const QString &text, qreal angle,
qreal maxWidth, qreal maxHeight, QRectF &boundingRect)
{
QString truncatedString(text);
boundingRect = textBoundingRect(font, truncatedString, angle);
if (boundingRect.width() > maxWidth || boundingRect.height() > maxHeight) {
// It can be assumed that almost any amount of string manipulation is faster
// than calculating one bounding rectangle, so first prepare a list of truncated strings
// to try.
static QRegExp truncateMatcher(QStringLiteral("&#?[0-9a-zA-Z]*;$"));
QVector<QString> testStrings(text.length());
int count(0);
static QLatin1Char closeTag('>');
static QLatin1Char openTag('<');
static QLatin1Char semiColon(';');
static QLatin1String ellipsis("...");
while (truncatedString.length() > 1) {
int chopIndex(-1);
int chopCount(1);
QChar lastChar(truncatedString.at(truncatedString.length() - 1));
if (lastChar == closeTag)
chopIndex = truncatedString.lastIndexOf(openTag);
else if (lastChar == semiColon)
chopIndex = truncateMatcher.indexIn(truncatedString, 0);
if (chopIndex != -1)
chopCount = truncatedString.length() - chopIndex;
truncatedString.chop(chopCount);
testStrings[count] = truncatedString + ellipsis;
count++;
}
// Binary search for best fit
int minIndex(0);
int maxIndex(count - 1);
int bestIndex(count);
QRectF checkRect;
while (maxIndex >= minIndex) {
int mid = (maxIndex + minIndex) / 2;
checkRect = textBoundingRect(font, testStrings.at(mid), angle);
if (checkRect.width() > maxWidth || checkRect.height() > maxHeight) {
// Checked index too large, all under this are also too large
minIndex = mid + 1;
} else {
// Checked index fits, all over this also fit
maxIndex = mid - 1;
bestIndex = mid;
boundingRect = checkRect;
}
}
// Default to "..." if nothing fits
if (bestIndex == count) {
boundingRect = textBoundingRect(font, ellipsis, angle);
truncatedString = ellipsis;
} else {
truncatedString = testStrings.at(bestIndex);
}
}
return truncatedString;
}
QString ChartPresenter::numberToString(double value, char f, int prec)
{
if (m_localizeNumbers)
return m_locale.toString(value, f, prec);
else
return QString::number(value, f, prec);
}
QString ChartPresenter::numberToString(int value)
{
if (m_localizeNumbers)
return m_locale.toString(value);
else
return QString::number(value);
}
void ChartPresenter::updateGLWidget()
{
#ifndef QT_NO_OPENGL
// GLWidget pointer is wrapped in QPointer as its parent is not in our control, and therefore
// can potentially get deleted unexpectedly.
if (m_glWidget.isNull() && m_glUseWidget && m_chart->scene()) {
// Find the view of the scene. If the scene has multiple views, only the first view is
// chosen.
QList<QGraphicsView *> views = m_chart->scene()->views();
if (views.size()) {
QGraphicsView *firstView = views.at(0);
m_glWidget = new GLWidget(m_chart->d_ptr->m_dataset->glXYSeriesDataManager(),
firstView);
m_glWidget->setGeometry(m_rect.toRect());
m_glWidget->show();
}
}
// Make sure we update the widget in a timely manner
if (!m_glWidget.isNull())
m_glWidget->update();
#endif
}
#include "moc_chartpresenter_p.cpp"
QT_CHARTS_END_NAMESPACE