abstractbarchartitem.cpp
179 lines
| 5.1 KiB
| text/x-c
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CppLexer
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r1674 | /**************************************************************************** | ||
| ** | ||||
| ** Copyright (C) 2012 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 Commercial Charts Add-on. | ||||
| ** | ||||
| ** $QT_BEGIN_LICENSE$ | ||||
| ** Licensees holding valid Qt Commercial licenses may use this file in | ||||
| ** accordance with the Qt Commercial 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 "chartanimator_p.h" | ||||
| #include "abstractbaranimation_p.h" | ||||
| #include "chartdataset_p.h" | ||||
| #include <QPainter> | ||||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
| AbstractBarChartItem::AbstractBarChartItem(QAbstractBarSeries *series, ChartPresenter *presenter) : | ||||
| ChartItem(presenter), | ||||
| m_animation(0), | ||||
| m_series(series) | ||||
| { | ||||
| setFlag(ItemClipsChildrenToShape); | ||||
| connect(series->d_func(), SIGNAL(updatedBars()), this, SLOT(handleLayoutChanged())); | ||||
| 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())); | ||||
| setZValue(ChartPresenter::BarSeriesZValue); | ||||
| handleDataStructureChanged(); | ||||
| } | ||||
| 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) | ||||
| { | ||||
| if (m_animation) { | ||||
| m_animation->setup(m_layout,layout); | ||||
| presenter()->startAnimation(m_animation); | ||||
| } else { | ||||
| setLayout(layout); | ||||
| update(); | ||||
| } | ||||
| } | ||||
| void AbstractBarChartItem::setAnimation(AbstractBarAnimation *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)); | ||||
| } | ||||
| } | ||||
| //handlers | ||||
| void AbstractBarChartItem::handleDomainChanged(qreal minX, qreal maxX, qreal minY, qreal maxY) | ||||
| { | ||||
| m_domainMinX = minX; | ||||
| m_domainMaxX = maxX; | ||||
| m_domainMinY = minY; | ||||
| m_domainMaxY = maxY; | ||||
| handleLayoutChanged(); | ||||
| } | ||||
| void AbstractBarChartItem::handleGeometryChanged(const QRectF &rect) | ||||
| { | ||||
| prepareGeometryChange(); | ||||
| m_rect = rect; | ||||
| handleLayoutChanged(); | ||||
| } | ||||
| void AbstractBarChartItem::handleLayoutChanged() | ||||
| { | ||||
| if ((m_rect.width() <= 0) || (m_rect.height() <= 0)) { | ||||
| // rect size zero. | ||||
| return; | ||||
| } | ||||
| QVector<QRectF> layout = calculateLayout(); | ||||
| applyLayout(layout); | ||||
| } | ||||
| void AbstractBarChartItem::handleLabelsVisibleChanged(bool visible) | ||||
| { | ||||
| foreach (QGraphicsSimpleTextItem* 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(); | ||||
| bool labelsVisible = m_series->isLabelsVisible(); | ||||
| // 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(clicked(int, QBarSet*)), set, SIGNAL(clicked(int))); | ||||
| connect(bar, SIGNAL(hovered(bool, QBarSet*)), set, SIGNAL(hovered(bool))); | ||||
| m_layout.append(QRectF(0, 0, 0, 0)); | ||||
| // Labels | ||||
| QGraphicsSimpleTextItem *label = new QGraphicsSimpleTextItem(this); | ||||
| label->setVisible(labelsVisible); | ||||
| m_labels.append(label); | ||||
| } | ||||
| } | ||||
| // TODO: Is this the right place to call it? | ||||
| presenter()->chartTheme()->decorate(m_series, presenter()->dataSet()->seriesIndex(m_series)); | ||||
| handleLayoutChanged(); | ||||
| } | ||||
| void AbstractBarChartItem::handleVisibleChanged() | ||||
| { | ||||
| bool visible = m_series->isVisible(); | ||||
| handleLabelsVisibleChanged(visible); | ||||
| foreach(QGraphicsItem *item, childItems()) { | ||||
| item->setVisible(visible); | ||||
| } | ||||
| } | ||||
| #include "moc_abstractbarchartitem_p.cpp" | ||||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||