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examples/stockchart/Legend.h

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+/*****************************************************************************
+ * Qwt Examples - Copyright (C) 2002 Uwe Rathmann
+ * This file may be used under the terms of the 3-clause BSD License
+ *****************************************************************************/
+
+#pragma once
+
+#include <QwtAbstractLegend>
+
+class LegendTreeView;
+class QStandardItem;
+class QModelIndex;
+class QwtPlotItem;
+
+class Legend : public QwtAbstractLegend
+{
+    Q_OBJECT
+
+  public:
+    explicit Legend( QWidget* parent = NULL );
+    virtual ~Legend();
+
+    virtual void renderLegend( QPainter*,
+        const QRectF&, bool fillBackground ) const QWT_OVERRIDE;
+
+    virtual bool isEmpty() const QWT_OVERRIDE;
+
+    virtual int scrollExtent( Qt::Orientation ) const QWT_OVERRIDE;
+
+  Q_SIGNALS:
+    void checked( QwtPlotItem* plotItem, bool on, int index );
+
+  public Q_SLOTS:
+    virtual void updateLegend( const QVariant&,
+        const QList< QwtLegendData >& ) QWT_OVERRIDE;
+
+  private Q_SLOTS:
+    void handleClick( const QModelIndex& );
+
+  private:
+    void updateItem( QStandardItem*, const QwtLegendData& );
+
+    LegendTreeView* m_treeView;
+};