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/****************************************************************************
**
** 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 <QtGui/QPainter>
#include <QtWidgets/QGraphicsSceneEvent>
#include <QtWidgets/QGraphicsTextItem>
#include <QtGui/QTextDocument>
#include <QtCharts/QLegend>
#include <private/qlegend_p.h>
#include <QtCharts/QLegendMarker>
#include <private/qlegendmarker_p.h>
#include <private/legendmarkeritem_p.h>
#include <private/chartpresenter_p.h>
QT_CHARTS_BEGIN_NAMESPACE
LegendMarkerItem::LegendMarkerItem(QLegendMarkerPrivate *marker, QGraphicsObject *parent) :
QGraphicsObject(parent),
m_marker(marker),
m_markerRect(0,0,10.0,10.0),
m_boundingRect(0,0,0,0),
m_textItem(new QGraphicsTextItem(this)),
m_rectItem(new QGraphicsRectItem(this)),
m_margin(3),
m_space(4),
m_hovering(false),
m_pressPos(0, 0)
{
m_rectItem->setRect(m_markerRect);
m_textItem->document()->setDocumentMargin(ChartPresenter::textMargin());
setAcceptHoverEvents(true);
}
LegendMarkerItem::~LegendMarkerItem()
{
if (m_hovering) {
emit m_marker->q_ptr->hovered(false);
}
}
void LegendMarkerItem::setPen(const QPen &pen)
{
m_rectItem->setPen(pen);
}
QPen LegendMarkerItem::pen() const
{
return m_rectItem->pen();
}
void LegendMarkerItem::setBrush(const QBrush &brush)
{
m_rectItem->setBrush(brush);
}
QBrush LegendMarkerItem::brush() const
{
return m_rectItem->brush();
}
void LegendMarkerItem::setFont(const QFont &font)
{
m_textItem->setFont(font);
QFontMetrics fn(font);
m_markerRect = QRectF(0,0,fn.height()/2,fn.height()/2);
updateGeometry();
}
QFont LegendMarkerItem::font() const
{
return m_textItem->font();
}
void LegendMarkerItem::setLabel(const QString label)
{
m_label = label;
updateGeometry();
}
QString LegendMarkerItem::label() const
{
return m_label;
}
void LegendMarkerItem::setLabelBrush(const QBrush &brush)
{
m_textItem->setDefaultTextColor(brush.color());
}
QBrush LegendMarkerItem::labelBrush() const
{
return QBrush(m_textItem->defaultTextColor());
}
void LegendMarkerItem::setGeometry(const QRectF &rect)
{
qreal width = rect.width();
qreal x = m_margin + m_markerRect.width() + m_space + m_margin;
QRectF truncatedRect;
m_textItem->setHtml(ChartPresenter::truncatedText(m_textItem->font(), m_label, qreal(0.0),
width - x, rect.height(), truncatedRect));
m_textItem->setTextWidth(truncatedRect.width());
qreal y = qMax(m_markerRect.height() + 2 * m_margin, truncatedRect.height() + 2 * m_margin);
const QRectF &textRect = m_textItem->boundingRect();
m_textItem->setPos(x - m_margin, y / 2 - textRect.height() / 2);
m_rectItem->setRect(m_markerRect);
// The textMargin adjustments to position are done to make default case rects less blurry with anti-aliasing
m_rectItem->setPos(m_margin - ChartPresenter::textMargin(), y / 2.0 - m_markerRect.height() / 2.0 + ChartPresenter::textMargin());
prepareGeometryChange();
m_boundingRect = QRectF(0, 0, x + textRect.width() + m_margin, y);
}
QRectF LegendMarkerItem::boundingRect() const
{
return m_boundingRect;
}
void LegendMarkerItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(option)
Q_UNUSED(widget)
Q_UNUSED(painter)
}
QSizeF LegendMarkerItem::sizeHint(Qt::SizeHint which, const QSizeF& constraint) const
{
Q_UNUSED(constraint)
QSizeF sh;
switch (which) {
case Qt::MinimumSize: {
QRectF labelRect = ChartPresenter::textBoundingRect(m_textItem->font(),
QStringLiteral("..."));
sh = QSizeF(labelRect.width() + (2.0 * m_margin) + m_space + m_markerRect.width(),
qMax(m_markerRect.height(), labelRect.height()) + (2.0 * m_margin));
break;
}
case Qt::PreferredSize: {
QRectF labelRect = ChartPresenter::textBoundingRect(m_textItem->font(), m_label);
sh = QSizeF(labelRect.width() + (2.0 * m_margin) + m_space + m_markerRect.width(),
qMax(m_markerRect.height(), labelRect.height()) + (2.0 * m_margin));
break;
}
default:
break;
}
return sh;
}
void LegendMarkerItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
{
Q_UNUSED(event)
m_hovering = true;
emit m_marker->q_ptr->hovered(true);
}
void LegendMarkerItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
{
Q_UNUSED(event)
m_hovering = false;
emit m_marker->q_ptr->hovered(false);
}
#include "moc_legendmarkeritem_p.cpp"
QT_CHARTS_END_NAMESPACE
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