tempo-plotter Changeset - 80498f7fdebc · protofusion repositories

Changeset - 80498f7fdebc

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Hasan Yavuz ÖZDERYA - 9 years ago 2017-02-25 11:00:43
hy@ozderya.net

show correct precise values in tracker text when snapped

2 files changed with 31 insertions and 9 deletions:

src/scalepicker.cpp

src/scalepicker.h

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src/scalepicker.cpp

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@@ @@ -182,9 +182,8 @@ void ScalePicker::drawPlotOverlay(QPaint @@
         painter->setBrush(color);
         QRect rect;
-        QwtText text(QString("%1").arg(position(currentPosPx)));
+        QwtText text = trackerText();
         auto tSize = text.textSize(painter->font());
         QPointF tTopLeft;
         if (_scaleWidget->alignment() == QwtScaleDraw::BottomScale ||
             _scaleWidget->alignment() == QwtScaleDraw::TopScale)
@@ @@ -205,13 +204,29 @@ void ScalePicker::drawPlotOverlay(QPaint @@
     else if (_scaleWidget->underMouse())
+    {
         // draw tracker text centered on cursor
-        QwtText text(QString("%1").arg(position(currentPosPx)));
+        QwtText text = trackerText();
         auto tsize = text.textSize(painter->font());
         text.draw(painter, trackerTextRect(painter, currentPosPx, tsize));
+    }
     painter->restore();
+}
 QwtText ScalePicker::trackerText() const
+{
     double pos;
     // use stored value if snapped to restore precision
     if (snapPointMap.contains(currentPosPx))
+    {
         pos = snapPointMap[currentPosPx];
+    }
     else
+    {
         pos = position(currentPosPx);
+    }
     return QwtText(QString("%1").arg(pos));
+}
 QRectF ScalePicker::trackerTextRect(QPainter* painter, int posPx, QSizeF textSize) const
+{
     int canvasPosPx = posCanvasPx(posPx);
@@ @@ -377,7 +392,7 @@ void ScalePicker::setPen(QPen pen) @@
+}
 // convert the position of the click to the plot coordinates
 double ScalePicker::position(double posPx)
+double ScalePicker::position(double posPx) const
+{
     return _scaleWidget->scaleDraw()->scaleMap().invTransform(posPx);
+}
@@ @@ -425,9 +440,12 @@ void ScalePicker::updateSnapPoints() @@
         _scaleWidget->scaleDraw()->scaleDiv().ticks(QwtScaleDiv::MinorTick);
     snapPoints.clear();
     snapPointMap.clear();
     for(auto t : allTicks)
+    {
         // `round` is used because `allTicks` is double but `snapPoints` is int
         snapPoints << round(_scaleWidget->scaleDraw()->scaleMap().transform(t));
         int p = round(_scaleWidget->scaleDraw()->scaleMap().transform(t));
         snapPoints << p;
         snapPointMap[p] = t;
+    }
+}

src/scalepicker.h

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@@ @@ -25,6 +25,7 @@ @@
 #include <QPen>
 #include <QWidget>
 #include <QList>
 #include <QMap>
 #include <qwt_scale_widget.h>
 #include <qwt_widget_overlay.h>
@@ @@ -58,17 +59,20 @@ private: @@
     double firstPosPx; // pixel coordinates
     double currentPosPx; // current position in pixel coordinates
     QList<int> snapPoints;
     /// used to restore precision of snappoints that is lost due to rounding
     QMap<int, double> snapPointMap;
     double position(double); // returns the axis mouse position relative to plot coordinates
+    double position(double) const; // returns the axis mouse position relative to plot coordinates
     int positionPx(QMouseEvent*); // returns the axis mouse position in pixels
     double posCanvasPx(double pos) const; // returns the given position in canvas coordinates
     void drawTriangle(QPainter* painter, int position);
 private slots:
     /// Returns tracker text position
     QwtText trackerText() const;
      /// Returns tracker text position
     QRectF trackerTextRect(QPainter* painter, int posPx, QSizeF textSize) const;
     /// Returns the text position for tracker text shown during picking
     QRectF pickTrackerTextRect(QPainter* painter, QRect pickRect, QSizeF textSize) const;
 private slots:
     void updateSnapPoints();
 };

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