abstractbarchartitem.cpp
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r0 | /**************************************************************************** | ||
** | ||||
** 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/abstractbarchartitem_p.h> | ||||
#include <private/bar_p.h> | ||||
#include <QtCharts/QBarSet> | ||||
#include <private/qbarset_p.h> | ||||
#include <QtCharts/QAbstractBarSeries> | ||||
#include <private/qabstractbarseries_p.h> | ||||
#include <QtCharts/QChart> | ||||
#include <private/chartpresenter_p.h> | ||||
#include <private/charttheme_p.h> | ||||
#include <private/baranimation_p.h> | ||||
#include <private/chartdataset_p.h> | ||||
#include <QtGui/QPainter> | ||||
#include <QtGui/QTextDocument> | ||||
QT_CHARTS_BEGIN_NAMESPACE | ||||
AbstractBarChartItem::AbstractBarChartItem(QAbstractBarSeries *series, QGraphicsItem* item) : | ||||
ChartItem(series->d_func(),item), | ||||
m_animation(0), | ||||
m_series(series) | ||||
{ | ||||
setFlag(ItemClipsChildrenToShape); | ||||
setFlag(QGraphicsItem::ItemIsSelectable); | ||||
connect(series->d_func(), SIGNAL(updatedLayout()), this, SLOT(handleLayoutChanged())); | ||||
connect(series->d_func(), SIGNAL(updatedBars()), this, SLOT(handleUpdatedBars())); | ||||
connect(series->d_func(), SIGNAL(labelsVisibleChanged(bool)), this, SLOT(handleLabelsVisibleChanged(bool))); | ||||
connect(series->d_func(), SIGNAL(restructuredBars()), this, SLOT(handleDataStructureChanged())); | ||||
connect(series, SIGNAL(visibleChanged()), this, SLOT(handleVisibleChanged())); | ||||
connect(series, SIGNAL(opacityChanged()), this, SLOT(handleOpacityChanged())); | ||||
connect(series, SIGNAL(labelsFormatChanged(QString)), this, SLOT(handleUpdatedBars())); | ||||
connect(series, SIGNAL(labelsFormatChanged(QString)), this, SLOT(positionLabels())); | ||||
connect(series, SIGNAL(labelsPositionChanged(QAbstractBarSeries::LabelsPosition)), | ||||
this, SLOT(handleLabelsPositionChanged())); | ||||
connect(series, SIGNAL(labelsAngleChanged(qreal)), this, SLOT(positionLabels())); | ||||
setZValue(ChartPresenter::BarSeriesZValue); | ||||
handleDataStructureChanged(); | ||||
handleVisibleChanged(); | ||||
handleUpdatedBars(); | ||||
} | ||||
AbstractBarChartItem::~AbstractBarChartItem() | ||||
{ | ||||
} | ||||
void AbstractBarChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) | ||||
{ | ||||
Q_UNUSED(painter); | ||||
Q_UNUSED(option); | ||||
Q_UNUSED(widget); | ||||
} | ||||
QRectF AbstractBarChartItem::boundingRect() const | ||||
{ | ||||
return m_rect; | ||||
} | ||||
void AbstractBarChartItem::applyLayout(const QVector<QRectF> &layout) | ||||
{ | ||||
QSizeF size = geometry().size(); | ||||
if (geometry().size().isValid()) { | ||||
if (m_animation) { | ||||
if (m_layout.count() == 0 || m_oldSize != size) { | ||||
initializeLayout(); | ||||
m_oldSize = size; | ||||
} | ||||
m_animation->setup(m_layout, layout); | ||||
presenter()->startAnimation(m_animation); | ||||
} else { | ||||
setLayout(layout); | ||||
update(); | ||||
} | ||||
} | ||||
} | ||||
void AbstractBarChartItem::setAnimation(BarAnimation *animation) | ||||
{ | ||||
m_animation = animation; | ||||
} | ||||
void AbstractBarChartItem::setLayout(const QVector<QRectF> &layout) | ||||
{ | ||||
if (layout.count() != m_bars.count()) | ||||
return; | ||||
m_layout = layout; | ||||
for (int i = 0; i < m_bars.count(); i++) | ||||
m_bars.at(i)->setRect(layout.at(i)); | ||||
positionLabels(); | ||||
} | ||||
//handlers | ||||
void AbstractBarChartItem::handleDomainUpdated() | ||||
{ | ||||
m_domainMinX = domain()->minX(); | ||||
m_domainMaxX = domain()->maxX(); | ||||
m_domainMinY = domain()->minY(); | ||||
m_domainMaxY = domain()->maxY(); | ||||
QRectF rect(QPointF(0,0),domain()->size()); | ||||
if(m_rect != rect){ | ||||
prepareGeometryChange(); | ||||
m_rect = rect; | ||||
} | ||||
handleLayoutChanged(); | ||||
} | ||||
void AbstractBarChartItem::handleLayoutChanged() | ||||
{ | ||||
if ((m_rect.width() <= 0) || (m_rect.height() <= 0)) | ||||
return; // rect size zero. | ||||
QVector<QRectF> layout = calculateLayout(); | ||||
applyLayout(layout); | ||||
handleUpdatedBars(); | ||||
} | ||||
void AbstractBarChartItem::handleLabelsVisibleChanged(bool visible) | ||||
{ | ||||
foreach (QGraphicsTextItem *label, m_labels) | ||||
label->setVisible(visible); | ||||
update(); | ||||
} | ||||
void AbstractBarChartItem::handleDataStructureChanged() | ||||
{ | ||||
foreach (QGraphicsItem *item, childItems()) | ||||
delete item; | ||||
m_bars.clear(); | ||||
m_labels.clear(); | ||||
m_layout.clear(); | ||||
// Create new graphic items for bars | ||||
for (int c = 0; c < m_series->d_func()->categoryCount(); c++) { | ||||
for (int s = 0; s < m_series->count(); s++) { | ||||
QBarSet *set = m_series->d_func()->barsetAt(s); | ||||
// Bars | ||||
Bar *bar = new Bar(set, c, this); | ||||
m_bars.append(bar); | ||||
connect(bar, SIGNAL(clicked(int,QBarSet*)), m_series, SIGNAL(clicked(int,QBarSet*))); | ||||
connect(bar, SIGNAL(hovered(bool, int, QBarSet*)), m_series, SIGNAL(hovered(bool, int, QBarSet*))); | ||||
connect(bar, SIGNAL(pressed(int, QBarSet*)), m_series, SIGNAL(pressed(int, QBarSet*))); | ||||
connect(bar, SIGNAL(released(int, QBarSet*)), | ||||
m_series, SIGNAL(released(int, QBarSet*))); | ||||
connect(bar, SIGNAL(doubleClicked(int, QBarSet*)), | ||||
m_series, SIGNAL(doubleClicked(int, QBarSet*))); | ||||
connect(bar, SIGNAL(clicked(int,QBarSet*)), set, SIGNAL(clicked(int))); | ||||
connect(bar, SIGNAL(hovered(bool, int, QBarSet*)), set, SIGNAL(hovered(bool, int))); | ||||
connect(bar, SIGNAL(pressed(int, QBarSet*)), set, SIGNAL(pressed(int))); | ||||
connect(bar, SIGNAL(released(int, QBarSet*)), set, SIGNAL(released(int))); | ||||
connect(bar, SIGNAL(doubleClicked(int, QBarSet*)), set, SIGNAL(doubleClicked(int))); | ||||
// m_layout.append(QRectF(0, 0, 1, 1)); | ||||
// Labels | ||||
QGraphicsTextItem *newLabel = new QGraphicsTextItem(this); | ||||
newLabel->document()->setDocumentMargin(ChartPresenter::textMargin()); | ||||
m_labels.append(newLabel); | ||||
} | ||||
} | ||||
if(themeManager()) themeManager()->updateSeries(m_series); | ||||
handleLayoutChanged(); | ||||
handleVisibleChanged(); | ||||
} | ||||
void AbstractBarChartItem::handleVisibleChanged() | ||||
{ | ||||
bool visible = m_series->isVisible(); | ||||
if (visible) | ||||
handleLabelsVisibleChanged(m_series->isLabelsVisible()); | ||||
else | ||||
handleLabelsVisibleChanged(visible); | ||||
foreach (QGraphicsItem *bar, m_bars) | ||||
bar->setVisible(visible); | ||||
} | ||||
void AbstractBarChartItem::handleOpacityChanged() | ||||
{ | ||||
foreach (QGraphicsItem *item, childItems()) | ||||
item->setOpacity(m_series->opacity()); | ||||
} | ||||
void AbstractBarChartItem::handleUpdatedBars() | ||||
{ | ||||
if (!m_series->d_func()->blockBarUpdate()) { | ||||
// Handle changes in pen, brush, labels etc. | ||||
int categoryCount = m_series->d_func()->categoryCount(); | ||||
int setCount = m_series->count(); | ||||
int itemIndex(0); | ||||
static const QString valueTag(QLatin1String("@value")); | ||||
for (int category = 0; category < categoryCount; category++) { | ||||
for (int set = 0; set < setCount; set++) { | ||||
QBarSetPrivate *barSet = m_series->d_func()->barsetAt(set)->d_ptr.data(); | ||||
Bar *bar = m_bars.at(itemIndex); | ||||
bar->setPen(barSet->m_pen); | ||||
bar->setBrush(barSet->m_brush); | ||||
bar->update(); | ||||
QGraphicsTextItem *label = m_labels.at(itemIndex); | ||||
QString valueLabel; | ||||
if (presenter()) { // At startup presenter is not yet set, yet somehow update comes | ||||
if (barSet->value(category) == 0) { | ||||
label->setVisible(false); | ||||
} else { | ||||
label->setVisible(m_series->isLabelsVisible()); | ||||
if (m_series->labelsFormat().isEmpty()) { | ||||
valueLabel = presenter()->numberToString(barSet->value(category)); | ||||
} else { | ||||
valueLabel = m_series->labelsFormat(); | ||||
valueLabel.replace(valueTag, | ||||
presenter()->numberToString(barSet->value(category))); | ||||
} | ||||
} | ||||
} | ||||
label->setHtml(valueLabel); | ||||
label->setFont(barSet->m_labelFont); | ||||
label->setDefaultTextColor(barSet->m_labelBrush.color()); | ||||
label->update(); | ||||
itemIndex++; | ||||
} | ||||
} | ||||
} | ||||
} | ||||
void AbstractBarChartItem::handleLabelsPositionChanged() | ||||
{ | ||||
positionLabels(); | ||||
} | ||||
void AbstractBarChartItem::positionLabels() | ||||
{ | ||||
// By default position labels on horizontal bar series | ||||
// Vertical bar series overload positionLabels() to call positionLabelsVertical() | ||||
QTransform transform; | ||||
const qreal angle = m_series->d_func()->labelsAngle(); | ||||
if (angle != 0.0) | ||||
transform.rotate(angle); | ||||
for (int i = 0; i < m_layout.count(); i++) { | ||||
QGraphicsTextItem *label = m_labels.at(i); | ||||
QRectF labelRect = label->boundingRect(); | ||||
QPointF center = labelRect.center(); | ||||
qreal xPos = 0; | ||||
qreal yPos = m_layout.at(i).center().y() - center.y(); | ||||
int xDiff = 0; | ||||
if (angle != 0.0) { | ||||
label->setTransformOriginPoint(center.x(), center.y()); | ||||
label->setRotation(m_series->d_func()->labelsAngle()); | ||||
qreal oldWidth = labelRect.width(); | ||||
labelRect = transform.mapRect(labelRect); | ||||
xDiff = (labelRect.width() - oldWidth) / 2; | ||||
} | ||||
int offset = m_bars.at(i)->pen().width() / 2 + 2; | ||||
switch (m_series->labelsPosition()) { | ||||
case QAbstractBarSeries::LabelsCenter: | ||||
xPos = m_layout.at(i).center().x() - center.x(); | ||||
break; | ||||
case QAbstractBarSeries::LabelsInsideEnd: | ||||
xPos = m_layout.at(i).right() - labelRect.width() - offset + xDiff; | ||||
break; | ||||
case QAbstractBarSeries::LabelsInsideBase: | ||||
xPos = m_layout.at(i).left() + offset + xDiff; | ||||
break; | ||||
case QAbstractBarSeries::LabelsOutsideEnd: | ||||
xPos = m_layout.at(i).right() + offset + xDiff; | ||||
break; | ||||
default: | ||||
// Invalid position, never comes here | ||||
break; | ||||
} | ||||
label->setPos(xPos, yPos); | ||||
label->setZValue(zValue() + 1); | ||||
} | ||||
} | ||||
void AbstractBarChartItem::positionLabelsVertical() | ||||
{ | ||||
QTransform transform; | ||||
const qreal angle = m_series->d_func()->labelsAngle(); | ||||
if (angle != 0.0) | ||||
transform.rotate(angle); | ||||
for (int i = 0; i < m_layout.count(); i++) { | ||||
QGraphicsTextItem *label = m_labels.at(i); | ||||
QRectF labelRect = label->boundingRect(); | ||||
QPointF center = labelRect.center(); | ||||
qreal xPos = m_layout.at(i).center().x() - center.x(); | ||||
qreal yPos = 0; | ||||
int yDiff = 0; | ||||
if (angle != 0.0) { | ||||
label->setTransformOriginPoint(center.x(), center.y()); | ||||
label->setRotation(m_series->d_func()->labelsAngle()); | ||||
qreal oldHeight = labelRect.height(); | ||||
labelRect = transform.mapRect(labelRect); | ||||
yDiff = (labelRect.height() - oldHeight) / 2; | ||||
} | ||||
int offset = m_bars.at(i)->pen().width() / 2 + 2; | ||||
switch (m_series->labelsPosition()) { | ||||
case QAbstractBarSeries::LabelsCenter: | ||||
yPos = m_layout.at(i).center().y() - center.y(); | ||||
break; | ||||
case QAbstractBarSeries::LabelsInsideEnd: | ||||
yPos = m_layout.at(i).top() + offset + yDiff; | ||||
break; | ||||
case QAbstractBarSeries::LabelsInsideBase: | ||||
yPos = m_layout.at(i).bottom() - labelRect.height() - offset + yDiff; | ||||
break; | ||||
case QAbstractBarSeries::LabelsOutsideEnd: | ||||
yPos = m_layout.at(i).top() - labelRect.height() - offset + yDiff; | ||||
break; | ||||
default: | ||||
// Invalid position, never comes here | ||||
break; | ||||
} | ||||
label->setPos(xPos, yPos); | ||||
label->setZValue(zValue() + 1); | ||||
} | ||||
} | ||||
#include "moc_abstractbarchartitem_p.cpp" | ||||
QT_CHARTS_END_NAMESPACE | ||||