tempo-plotter Changeset - c9d4060942ac · protofusion repositories

Changeset - c9d4060942ac

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Hasan Yavuz ÖZDERYA - 9 years ago 2017-04-22 12:57:22
hy@ozderya.net

added panning when ctrl is pressed

2 files changed with 54 insertions and 0 deletions:

src/zoomer.cpp

src/zoomer.h

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src/zoomer.cpp

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 /*
   Copyright © 2017 Hasan Yavuz Özderya
   This file is part of serialplot.
   serialplot is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
   serialplot is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   You should have received a copy of the GNU General Public License
   along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
 */
 #include "zoomer.h"
 #include <qwt_plot.h>
 #include <QtDebug>
 #include <QMouseEvent>
 Zoomer::Zoomer(QWidget* widget, bool doReplot) :
     ScrollZoomer(widget)
+{
     is_panning = false;
     // set corner widget between the scrollbars with default background color
     auto cornerWidget = new QWidget();
     auto bgColor = cornerWidget->palette().color(QPalette::Window).name();
     auto styleSheet = QString("background-color:%1;").arg(bgColor);
     cornerWidget->setStyleSheet(styleSheet);
     ScrollZoomer::setCornerWidget(cornerWidget);
+}
 void Zoomer::zoom(int up)
+{
     ScrollZoomer::zoom(up);
     if(zoomRectIndex() == 0)
+    {
         emit unzoomed();
+    }
+}
 void Zoomer::zoom( const QRectF & rect)
+{
     // set the zoom base when user zooms in to first level
     if (zoomRectIndex() == 0)
+    {
         this->setZoomBase(false);
@@ @@ -74,24 +78,64 @@ QwtText Zoomer::trackerTextF(const QPoin @@
     return b;
+}
 void Zoomer::drawRubberBand(QPainter* painter) const
+{
     const double FILL_ALPHA = 0.2;
     QColor color = painter->pen().color();
     color.setAlphaF(FILL_ALPHA);
     painter->setBrush(color);
     ScrollZoomer::drawRubberBand(painter);
+}
 QRegion Zoomer::rubberBandMask() const
+{
     const QPolygon pa = selection();
     if (pa.count() < 2)
+    {
         return QRegion();
+    }
     const QRect r = QRect(pa.first(), pa.last()).normalized().adjusted(0, 0, 1, 1);
     return QRegion(r);
+}
 void Zoomer::widgetMousePressEvent(QMouseEvent* mouseEvent)
+{
     if (mouseEvent->modifiers() & Qt::ControlModifier)
+    {
         is_panning = true;
         pan_point = invTransform(mouseEvent->pos());
+    }
     else
+    {
         ScrollZoomer::widgetMousePressEvent(mouseEvent);
+    }
+}
 void Zoomer::widgetMouseMoveEvent(QMouseEvent* mouseEvent)
+{
     if (is_panning)
+    {
         auto cur_point = invTransform(mouseEvent->pos());
         auto delta = cur_point - pan_point;
         moveBy(-delta.x(), -delta.y());
         pan_point = invTransform(mouseEvent->pos());
+    }
     else
+    {
         ScrollZoomer::widgetMouseMoveEvent(mouseEvent);
+    }
+}
 void Zoomer::widgetMouseReleaseEvent(QMouseEvent* mouseEvent)
+{
     if (is_panning)
+    {
         is_panning = false;
+    }
     else
+    {
         ScrollZoomer::widgetMouseReleaseEvent(mouseEvent);
+    }
+}

src/zoomer.h

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@@ @@ -20,27 +20,37 @@ @@
 #ifndef ZOOMER_H
 #define ZOOMER_H
 #include <scrollzoomer.h>
 class Zoomer : public ScrollZoomer
+{
     Q_OBJECT
 public:
     Zoomer(QWidget *, bool doReplot=true);
     void zoom(int up);
     void zoom( const QRectF & );
 signals:
     void unzoomed();
 protected:
     /// Re-implemented to display selection size in the tracker text.
     QwtText trackerTextF(const QPointF &pos) const;
     /// Re-implemented for alpha background
     void drawRubberBand(QPainter* painter) const;
     /// Re-implemented for alpha background (masking is basically disabled)
     QRegion rubberBandMask() const;
     /// Overloaded for panning
     void widgetMousePressEvent(QMouseEvent* mouseEvent);
     /// Overloaded for panning
     void widgetMouseReleaseEvent(QMouseEvent* mouseEvent);
     /// Overloaded for panning
     void widgetMouseMoveEvent(QMouseEvent* mouseEvent);
 private:
     bool is_panning;
     QPointF pan_point;
 };
 #endif // ZOOMER_H

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