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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QPainter>
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#include <QGraphicsSceneEvent>
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#include <QGraphicsSimpleTextItem>
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#include "qlegend.h"
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#include "qlegend_p.h"
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#include "qlegendmarker.h"
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#include "qlegendmarker_p.h"
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#include "legendmarkeritem_p.h"
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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LegendMarkerItem::LegendMarkerItem(QLegendMarkerPrivate *marker, QGraphicsObject *parent) :
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QGraphicsObject(parent),
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m_marker(marker),
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m_markerRect(0,0,10.0,10.0),
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m_boundingRect(0,0,0,0),
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m_textItem(new QGraphicsSimpleTextItem(this)),
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m_rectItem(new QGraphicsRectItem(this)),
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m_margin(4),
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m_space(4),
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m_hovering(false),
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m_pressPos(0, 0)
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{
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m_rectItem->setRect(m_markerRect);
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setAcceptHoverEvents(true);
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}
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LegendMarkerItem::~LegendMarkerItem()
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{
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if (m_hovering) {
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emit m_marker->q_ptr->hovered(false);
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}
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}
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void LegendMarkerItem::setPen(const QPen &pen)
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{
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m_rectItem->setPen(pen);
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}
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QPen LegendMarkerItem::pen() const
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{
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return m_rectItem->pen();
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}
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void LegendMarkerItem::setBrush(const QBrush &brush)
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{
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m_rectItem->setBrush(brush);
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}
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QBrush LegendMarkerItem::brush() const
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{
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return m_rectItem->brush();
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}
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void LegendMarkerItem::setFont(const QFont &font)
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{
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m_textItem->setFont(font);
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QFontMetrics fn(font);
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m_markerRect = QRectF(0,0,fn.height()/2,fn.height()/2);
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updateGeometry();
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}
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QFont LegendMarkerItem::font() const
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{
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return m_textItem->font();
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}
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void LegendMarkerItem::setLabel(const QString label)
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{
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m_label = label;
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updateGeometry();
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}
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QString LegendMarkerItem::label() const
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{
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return m_label;
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}
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void LegendMarkerItem::setLabelBrush(const QBrush &brush)
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{
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m_textItem->setBrush(brush);
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}
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QBrush LegendMarkerItem::labelBrush() const
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{
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return m_textItem->brush();
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}
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void LegendMarkerItem::setGeometry(const QRectF &rect)
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{
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QFontMetrics fn (m_font);
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int width = rect.width();
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qreal x = m_margin + m_markerRect.width() + m_space + m_margin;
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qreal y = qMax(m_markerRect.height()+2*m_margin,fn.height()+2*m_margin);
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if (fn.boundingRect(m_label).width() + x > width)
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{
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QString string = m_label + "...";
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while(fn.boundingRect(string).width() + x > width && string.length() > 3)
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string.remove(string.length() - 4, 1);
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m_textItem->setText(string);
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}
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else
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m_textItem->setText(m_label);
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const QRectF &textRect = m_textItem->boundingRect();
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m_textItem->setPos(x-m_margin,y/2 - textRect.height()/2);
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m_rectItem->setRect(m_markerRect);
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m_rectItem->setPos(m_margin,y/2 - m_markerRect.height()/2);
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prepareGeometryChange();
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m_boundingRect = QRectF(0,0,x+textRect.width()+m_margin,y);
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}
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QRectF LegendMarkerItem::boundingRect() const
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{
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return m_boundingRect;
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}
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void LegendMarkerItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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Q_UNUSED(option)
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Q_UNUSED(widget)
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Q_UNUSED(painter)
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}
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QSizeF LegendMarkerItem::sizeHint(Qt::SizeHint which, const QSizeF& constraint) const
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{
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Q_UNUSED(constraint)
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QFontMetrics fn(m_textItem->font());
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QSizeF sh;
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switch (which) {
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case Qt::MinimumSize:
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sh = QSizeF(fn.boundingRect("...").width() + 2*m_margin + m_space +m_markerRect.width(),qMax(m_markerRect.height()+2*m_margin,fn.height()+2*m_margin));
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break;
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case Qt::PreferredSize:
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sh = QSizeF(fn.boundingRect(m_label).width() + 2*m_margin + m_space +m_markerRect.width(),qMax(m_markerRect.height()+2*m_margin,fn.height()+2*m_margin));
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break;
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default:
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break;
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}
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return sh;
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}
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void LegendMarkerItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
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{
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Q_UNUSED(event)
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m_hovering = true;
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emit m_marker->q_ptr->hovered(true);
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}
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void LegendMarkerItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
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{
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Q_UNUSED(event)
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m_hovering = false;
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emit m_marker->q_ptr->hovered(false);
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}
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#include "moc_legendmarkeritem_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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