diff options
Diffstat (limited to 'src/charts/barchart/abstractbarchartitem.cpp')
| -rw-r--r-- | src/charts/barchart/abstractbarchartitem.cpp | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/src/charts/barchart/abstractbarchartitem.cpp b/src/charts/barchart/abstractbarchartitem.cpp new file mode 100644 index 00000000..4cf8b366 --- /dev/null +++ b/src/charts/barchart/abstractbarchartitem.cpp @@ -0,0 +1,268 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Digia Plc +** All rights reserved. +** For any questions to Digia, please use contact form at http://qt.digia.com +** +** This file is part of the Qt Enterprise Charts Add-on. +** +** $QT_BEGIN_LICENSE$ +** Licensees holding valid Qt Enterprise licenses may use this file in +** accordance with the Qt Enterprise License Agreement provided with the +** 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 "abstractbarchartitem_p.h" +#include "bar_p.h" +#include "qbarset.h" +#include "qbarset_p.h" +#include "qabstractbarseries.h" +#include "qabstractbarseries_p.h" +#include "qchart.h" +#include "chartpresenter_p.h" +#include "charttheme_p.h" +#include "baranimation_p.h" +#include "chartdataset_p.h" +#include <QPainter> +#include <QTextDocument> + +QT_CHARTS_BEGIN_NAMESPACE + +AbstractBarChartItem::AbstractBarChartItem(QAbstractBarSeries *series, QGraphicsItem* item) : + ChartItem(series->d_func(),item), + m_animation(0), + m_series(series) +{ + + setFlag(ItemClipsChildrenToShape); + 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())); + 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,QBarSet*)), m_series, SIGNAL(hovered(bool,QBarSet*))); + connect(bar, SIGNAL(hovered(bool, int, QBarSet*)), m_series, SIGNAL(hovered(bool, int, QBarSet*))); + connect(bar, SIGNAL(clicked(int,QBarSet*)), set, SIGNAL(clicked(int))); + connect(bar, SIGNAL(hovered(bool,QBarSet*)), set, SIGNAL(hovered(bool))); + connect(bar, SIGNAL(hovered(bool, int, QBarSet*)), set, SIGNAL(hovered(bool, 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 (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() +{ + for (int i = 0; i < m_layout.count(); i++) { + QGraphicsTextItem *label = m_labels.at(i); + qreal xPos = 0; + qreal yPos = m_layout.at(i).center().y() - label->boundingRect().center().y(); + + int offset = m_bars.at(i)->pen().width() / 2 + 2; + if (m_series->labelsPosition() == QAbstractBarSeries::LabelsCenter) + xPos = m_layout.at(i).center().x() - label->boundingRect().center().x(); + else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsInsideEnd) + xPos = m_layout.at(i).right() - label->boundingRect().width() - offset; + else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsInsideBase) + xPos = m_layout.at(i).left() + offset; + else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsOutsideEnd) + xPos = m_layout.at(i).right() + offset; + + label->setPos(xPos, yPos); + label->setZValue(zValue() + 1); + } +} + +#include "moc_abstractbarchartitem_p.cpp" + +QT_CHARTS_END_NAMESPACE |