Rename ApplicationCode to ApplicationLibCode

ApplicationLibCode/UserInterface/RiuQwtScalePicker.cpp

@@ -0,0 +1,87 @@
+// Based on the example scalepicker from the Qwt/examples/event_filter
+
+#include "RiuQwtScalePicker.h"
+#include "RiuQwtPlotWidget.h"
+
+#include <QMouseEvent>
+
+#include <qwt_plot.h>
+#include <qwt_scale_widget.h>
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+RiuQwtScalePicker::RiuQwtScalePicker( QwtPlot* plot )
+    : QObject( plot )
+{
+    for ( uint i = 0; i < QwtPlot::axisCnt; i++ )
+    {
+        QwtScaleWidget* scaleWidget = plot->axisWidget( i );
+        if ( scaleWidget ) scaleWidget->installEventFilter( this );
+    }
+}
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+bool RiuQwtScalePicker::eventFilter( QObject* object, QEvent* event )
+{
+    if ( event->type() == QEvent::MouseButtonPress )
+    {
+        QwtScaleWidget* scaleWidget = qobject_cast<QwtScaleWidget*>( object );
+        if ( scaleWidget )
+        {
+            QMouseEvent* mouseEvent = static_cast<QMouseEvent*>( event );
+            Q_EMIT( mouseClicked( scaleWidget, mouseEvent->pos() ) );
+
+            return true;
+        }
+    }
+
+    return QObject::eventFilter( object, event );
+}
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+double RiuQwtScalePicker::axisValueAtPosition( const QwtScaleWidget* scale, const QPoint& pos )
+{
+    QRect rect = scale->rect();
+
+    int margin = 10; // 10 pixels tolerance
+    rect.setRect( rect.x() - margin, rect.y() - margin, rect.width() + 2 * margin, rect.height() + 2 * margin );
+
+    if ( rect.contains( pos ) ) // No click on the title
+    {
+        // translate the position in a value on the scale
+
+        double value = 0.0;
+
+        const QwtScaleDraw* sd = scale->scaleDraw();
+        switch ( scale->alignment() )
+        {
+            case QwtScaleDraw::LeftScale:
+            {
+                value = sd->scaleMap().invTransform( pos.y() );
+                break;
+            }
+            case QwtScaleDraw::RightScale:
+            {
+                value = sd->scaleMap().invTransform( pos.y() );
+                break;
+            }
+            case QwtScaleDraw::BottomScale:
+            {
+                value = sd->scaleMap().invTransform( pos.x() );
+                break;
+            }
+            case QwtScaleDraw::TopScale:
+            {
+                value = sd->scaleMap().invTransform( pos.x() );
+                break;
+            }
+        }
+        return value;
+    }
+    return std::numeric_limits<double>::infinity();
+}