tempo-plotter Changeset - c78aec692ac0 · protofusion repositories

Changeset - c78aec692ac0

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scrollbar-exp

0 3 0

Hasan Yavuz ÖZDERYA - 9 years ago 2017-01-29 07:45:41
hy@ozderya.net

experimental scrollbar behaviour for large data plots

3 files changed with 54 insertions and 7 deletions:

src/plot.cpp

src/scrollzoomer.cpp

src/scrollzoomer.h

0 comments (0 inline, 0 general)

src/plot.cpp

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@@ @@ -38,13 +38,13 @@ Plot::Plot(QWidget* parent) : @@
+{
     isAutoScaled = true;
     symbolSize = 0;
     QObject::connect(&zoomer, &Zoomer::unzoomed, this, &Plot::unzoomed);
     zoomer.setZoomBase();
+    zoomer.setZoomBase(QRectF(0,-1,2,500));
     grid.attach(this);
     legend.attach(this);
     showGrid(false);
     darkBackground(false);

src/scrollzoomer.cpp

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@@ @@ -39,12 +39,14 @@ ScrollZoomer::ScrollZoomer( QWidget *can @@
     QwtPlotZoomer( canvas ),
     d_cornerWidget( NULL ),
     d_hScrollData( NULL ),
     d_vScrollData( NULL ),
     d_inZoom( false )
+{
     d_limits = QRectF(0, -10, 10000, 20);
     for ( int axis = 0; axis < QwtPlot::axisCnt; axis++ )
         d_alignCanvasToScales[ axis ] = false;
     if ( !canvas )
         return;
@@ @@ -58,12 +60,14 @@ ScrollZoomer::~ScrollZoomer() @@
     delete d_vScrollData;
     delete d_hScrollData;
+}
 void ScrollZoomer::rescale()
+{
     qDebug() << "rescale";
     QwtScaleWidget *xScale = plot()->axisWidget( xAxis() );
     QwtScaleWidget *yScale = plot()->axisWidget( yAxis() );
     if ( zoomRectIndex() <= 0 )
+    {
         if ( d_inZoom )
@@ @@ -262,22 +266,26 @@ bool ScrollZoomer::needScrollBar( Qt::Or @@
     Qt::ScrollBarPolicy mode;
     double zoomMin, zoomMax, baseMin, baseMax;
     if ( orientation == Qt::Horizontal )
+    {
         mode = d_hScrollData->mode;
         baseMin = zoomBase().left();
         baseMax = zoomBase().right();
         // baseMin = zoomBase().left();
         // baseMax = zoomBase().right();
         baseMin = d_limits.left();
         baseMax = d_limits.right();
         zoomMin = zoomRect().left();
         zoomMax = zoomRect().right();
+    }
     else
+    {
         mode = d_vScrollData->mode;
         baseMin = zoomBase().top();
         baseMax = zoomBase().bottom();
         // baseMin = zoomBase().top();
         // baseMax = zoomBase().bottom();
         baseMin = d_limits.top();
         baseMax = d_limits.bottom();
         zoomMin = zoomRect().top();
         zoomMax = zoomRect().bottom();
+    }
     bool needed = false;
     switch( mode )
@@ @@ -297,12 +305,14 @@ bool ScrollZoomer::needScrollBar( Qt::Or @@
+    }
     return needed;
+}
 void ScrollZoomer::updateScrollBars()
+{
     qDebug() << "updateScrollBars()";
     if ( !canvas() )
         return;
     const int xAxis = QwtPlotZoomer::xAxis();
     const int yAxis = QwtPlotZoomer::yAxis();
@@ @@ -320,14 +330,16 @@ void ScrollZoomer::updateScrollBars() @@
     bool showHScrollBar = needScrollBar( Qt::Horizontal );
     if ( showHScrollBar )
+    {
         ScrollBar *sb = scrollBar( Qt::Horizontal );
         sb->setPalette( plot()->palette() );
         sb->setInverted( !plot()->axisScaleDiv( xAxis ).isIncreasing() );
         sb->setBase( zoomBase().left(), zoomBase().right() );
         // sb->setBase( zoomBase().left(), zoomBase().right() );
         sb->setBase( d_limits.left(), d_limits.right() );
         sb->moveSlider( zoomRect().left(), zoomRect().right() );
         qDebug() << "moveSlider" << zoomRect().left() << zoomRect().right();
         if ( !sb->isVisibleTo( canvas() ) )
+        {
             sb->show();
             layout->setCanvasMargin( layout->canvasMargin( xScrollBarAxis )
                 + sb->extent(), xScrollBarAxis );
@@ @@ -346,13 +358,13 @@ void ScrollZoomer::updateScrollBars() @@
     bool showVScrollBar = needScrollBar( Qt::Vertical );
     if ( showVScrollBar )
+    {
         ScrollBar *sb = scrollBar( Qt::Vertical );
         sb->setPalette( plot()->palette() );
         sb->setInverted( plot()->axisScaleDiv( yAxis ).isIncreasing() );
-        sb->setBase( zoomBase().top(), zoomBase().bottom() );
+        sb->setBase( d_limits.top(), d_limits.bottom() );
         sb->moveSlider( zoomRect().top(), zoomRect().bottom() );
         if ( !sb->isVisibleTo( canvas() ) )
+        {
             sb->show();
             layout->setCanvasMargin( layout->canvasMargin( yScrollBarAxis )
@@ @@ -484,6 +496,36 @@ int ScrollZoomer::oppositeAxis( int axis @@
         default:
             break;
+    }
     return axis;
+}
 void ScrollZoomer::moveTo( const QPointF &pos )
+{
     // QwtPlotZoomer::moveTo(pos);
     // return;
     double x = pos.x();
     double y = pos.y();
     if ( x < d_limits.left() )
         x = d_limits.left();
     if ( x > d_limits.right() - zoomRect().width() )
         x = d_limits.right() - zoomRect().width();
     if ( y < d_limits.top() )
         y = d_limits.top();
     if ( y > d_limits.bottom() - zoomRect().height() )
         y = d_limits.bottom() - zoomRect().height();
     qDebug() << "x,y: "<<x<<y;
     if ( x != zoomRect().left() || y != zoomRect().top() )
+    {
         auto zs = zoomStack();
         zs[zoomRectIndex()].moveTo( x, y );
         // d_data->zoomStack[d_data->zoomRectIndex].moveTo( x, y );
         setZoomStack(zs, zoomRectIndex());
         rescale();
+    }
+}

src/scrollzoomer.h

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@@ @@ -49,21 +49,26 @@ public: @@
     virtual void setCornerWidget( QWidget * );
     virtual bool eventFilter( QObject *, QEvent * );
     virtual void rescale();
 public Q_SLOTS:
     virtual void moveTo( const QPointF & );
 protected:
     virtual ScrollBar *scrollBar( Qt::Orientation );
     virtual void updateScrollBars();
     virtual void layoutScrollBars( const QRect & );
 private Q_SLOTS:
     void scrollBarMoved( Qt::Orientation o, double min, double max );
 private:
     QRectF d_limits;
     bool needScrollBar( Qt::Orientation ) const;
     int oppositeAxis( int ) const;
     QWidget *d_cornerWidget;
     ScrollData *d_hScrollData;

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