1 files changed, 192 insertions, 0 deletions
diff --git a/src/charts/legend/legendmarkeritem.cpp b/src/charts/legend/legendmarkeritem.cpp
new file mode 100644
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+++ b/src/charts/legend/legendmarkeritem.cpp
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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 <QPainter>
+#include <QGraphicsSceneEvent>
+#include <QGraphicsTextItem>
+#include <QTextDocument>
+
+#include "qlegend.h"
+#include "qlegend_p.h"
+#include "qlegendmarker.h"
+#include "qlegendmarker_p.h"
+#include "legendmarkeritem_p.h"
+#include "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