Merge branch 'master' into master

[proxmark3-svn] / client / proxguiqt.cpp

diff --git a/client/proxguiqt.cpp b/client/proxguiqt.cpp
index d81c8108e2a47dcdcfcb048095546d8e19268768..ab0976cceb4442e3b157bbc1403ff1b18721329a 100644 (file)
--- a/client/proxguiqt.cpp
+++ b/client/proxguiqt.cpp
@@ -9,6 +9,7 @@
 //-----------------------------------------------------------------------------
 #include "proxguiqt.h"
 
 //-----------------------------------------------------------------------------
 #include "proxguiqt.h"
 

+#include <stdbool.h>

 #include <iostream>
 #include <QPainterPath>
 #include <QBrush>
 #include <iostream>
 #include <QPainterPath>
 #include <QBrush>


@@ -27,9 +28,11 @@
 #include <QtGui>
 //#include <ctime>
 
 #include <QtGui>
 //#include <ctime>
 

-
+bool g_useOverlays = false;
+int g_absVMax = 0;

 int startMax;
 int PageWidth;
 int startMax;
 int PageWidth;

+int unlockStart = 0;

 
 void ProxGuiQT::ShowGraphWindow(void)
 {
 
 void ProxGuiQT::ShowGraphWindow(void)
 {


@@ -81,6 +84,18 @@ void ProxGuiQT::_HideGraphWindow(void)
 void ProxGuiQT::_Exit(void) {
        delete this;
 }
 void ProxGuiQT::_Exit(void) {
        delete this;
 }

+
+void ProxGuiQT::_StartProxmarkThread(void) {
+       if (!proxmarkThread)
+               return;
+
+       // if thread finished delete self and delete application
+       QObject::connect(proxmarkThread, SIGNAL(finished()), proxmarkThread, SLOT(deleteLater()));
+       QObject::connect(proxmarkThread, SIGNAL(finished()), this, SLOT(_Exit()));
+       // start proxmark thread
+       proxmarkThread->start();
+}
+

 void ProxGuiQT::MainLoop()
 {
        plotapp = new QApplication(argc, argv);
 void ProxGuiQT::MainLoop()
 {
        plotapp = new QApplication(argc, argv);


@@ -90,11 +105,14 @@ void ProxGuiQT::MainLoop()
        connect(this, SIGNAL(HideGraphWindowSignal()), this, SLOT(_HideGraphWindow()));
        connect(this, SIGNAL(ExitSignal()), this, SLOT(_Exit()));
 
        connect(this, SIGNAL(HideGraphWindowSignal()), this, SLOT(_HideGraphWindow()));
        connect(this, SIGNAL(ExitSignal()), this, SLOT(_Exit()));
 

+       //start proxmark thread after starting event loop
+       QTimer::singleShot(200, this, SLOT(_StartProxmarkThread()));
+

        plotapp->exec();
 }
 
        plotapp->exec();
 }
 

-ProxGuiQT::ProxGuiQT(int argc, char **argv) : plotapp(NULL), plotwidget(NULL),
-       argc(argc), argv(argv)
+ProxGuiQT::ProxGuiQT(int argc, char **argv, WorkerThread *wthread) : plotapp(NULL), plotwidget(NULL),
+       argc(argc), argv(argv), proxmarkThread(wthread)

 {
 }
 
 {
 }
 


@@ -107,7 +125,7 @@ ProxGuiQT::~ProxGuiQT(void)
        //}
        if (plotapp) {
                plotapp->quit();
        //}
        if (plotapp) {
                plotapp->quit();

-               delete plotapp;
+               // delete plotapp;

                plotapp = NULL;
        }
 }
                plotapp = NULL;
        }
 }


@@ -116,13 +134,13 @@ ProxGuiQT::~ProxGuiQT(void)
 void ProxWidget::applyOperation()
 {
        //printf("ApplyOperation()");
 void ProxWidget::applyOperation()
 {
        //printf("ApplyOperation()");

-       save_restoreGB(1);
+       save_restoreGB(GRAPH_SAVE);

        memcpy(GraphBuffer, s_Buff, sizeof(int) * GraphTraceLen);
        RepaintGraphWindow();
 }
 void ProxWidget::stickOperation()
 {
        memcpy(GraphBuffer, s_Buff, sizeof(int) * GraphTraceLen);
        RepaintGraphWindow();
 }
 void ProxWidget::stickOperation()
 {

-       save_restoreGB(0);
+       save_restoreGB(GRAPH_RESTORE);

        //printf("stickOperation()");
 }
 void ProxWidget::vchange_autocorr(int v)
        //printf("stickOperation()");
 }
 void ProxWidget::vchange_autocorr(int v)


@@ -130,6 +148,7 @@ void ProxWidget::vchange_autocorr(int v)
        int ans;
        ans = AutoCorrelate(GraphBuffer, s_Buff, GraphTraceLen, v, true, false);
        if (g_debugMode) printf("vchange_autocorr(w:%d): %d\n", v, ans);
        int ans;
        ans = AutoCorrelate(GraphBuffer, s_Buff, GraphTraceLen, v, true, false);
        if (g_debugMode) printf("vchange_autocorr(w:%d): %d\n", v, ans);

+       g_useOverlays = true;

        RepaintGraphWindow();
 }
 void ProxWidget::vchange_askedge(int v)
        RepaintGraphWindow();
 }
 void ProxWidget::vchange_askedge(int v)


@@ -138,6 +157,7 @@ void ProxWidget::vchange_askedge(int v)
        //extern int AskEdgeDetect(const int *in, int *out, int len, int threshold);
        ans = AskEdgeDetect(GraphBuffer, s_Buff, GraphTraceLen, v);
        if (g_debugMode) printf("vchange_askedge(w:%d)%d\n", v, ans);
        //extern int AskEdgeDetect(const int *in, int *out, int len, int threshold);
        ans = AskEdgeDetect(GraphBuffer, s_Buff, GraphTraceLen, v);
        if (g_debugMode) printf("vchange_askedge(w:%d)%d\n", v, ans);

+       g_useOverlays = true;

        RepaintGraphWindow();
 }
 void ProxWidget::vchange_dthr_up(int v)
        RepaintGraphWindow();
 }
 void ProxWidget::vchange_dthr_up(int v)


@@ -145,16 +165,16 @@ void ProxWidget::vchange_dthr_up(int v)
        int down = opsController->horizontalSlider_dirthr_down->value();
        directionalThreshold(GraphBuffer, s_Buff, GraphTraceLen, v, down);
        //printf("vchange_dthr_up(%d)", v);
        int down = opsController->horizontalSlider_dirthr_down->value();
        directionalThreshold(GraphBuffer, s_Buff, GraphTraceLen, v, down);
        //printf("vchange_dthr_up(%d)", v);

+       g_useOverlays = true;

        RepaintGraphWindow();
        RepaintGraphWindow();

-

 }
 void ProxWidget::vchange_dthr_down(int v)
 {
        //printf("vchange_dthr_down(%d)", v);
        int up = opsController->horizontalSlider_dirthr_up->value();
        directionalThreshold(GraphBuffer,s_Buff, GraphTraceLen, v, up);
 }
 void ProxWidget::vchange_dthr_down(int v)
 {
        //printf("vchange_dthr_down(%d)", v);
        int up = opsController->horizontalSlider_dirthr_up->value();
        directionalThreshold(GraphBuffer,s_Buff, GraphTraceLen, v, up);

+       g_useOverlays = true;

        RepaintGraphWindow();
        RepaintGraphWindow();

-

 }
 ProxWidget::ProxWidget(QWidget *parent, ProxGuiQT *master) : QWidget(parent)
 {
 }
 ProxWidget::ProxWidget(QWidget *parent, ProxGuiQT *master) : QWidget(parent)
 {


@@ -170,6 +190,11 @@ ProxWidget::ProxWidget(QWidget *parent, ProxGuiQT *master) : QWidget(parent)
        opsController->horizontalSlider_dirthr_down->setMinimum(-128);
        opsController->horizontalSlider_dirthr_down->setMaximum(0);
        opsController->horizontalSlider_dirthr_down->setValue(-20);
        opsController->horizontalSlider_dirthr_down->setMinimum(-128);
        opsController->horizontalSlider_dirthr_down->setMaximum(0);
        opsController->horizontalSlider_dirthr_down->setValue(-20);

+       opsController->horizontalSlider_dirthr_up->setMinimum(-40);
+       opsController->horizontalSlider_dirthr_up->setMaximum(128);
+       opsController->horizontalSlider_dirthr_up->setValue(20);
+       opsController->horizontalSlider_askedge->setValue(25);
+       opsController->horizontalSlider_window->setValue(4000);

 
 
        QObject::connect(opsController->pushButton_apply, SIGNAL(clicked()), this, SLOT(applyOperation()));
 
 
        QObject::connect(opsController->pushButton_apply, SIGNAL(clicked()), this, SLOT(applyOperation()));


@@ -223,6 +248,7 @@ void ProxWidget::closeEvent(QCloseEvent *event)
 {
        event->ignore();
        this->hide();
 {
        event->ignore();
        this->hide();

+       g_useOverlays = false;

 }
 void ProxWidget::hideEvent(QHideEvent *event) {
        controlWidget->hide();
 }
 void ProxWidget::hideEvent(QHideEvent *event) {
        controlWidget->hide();


@@ -243,6 +269,7 @@ int Plot::xCoordOf(int i, QRect r )
 int Plot::yCoordOf(int v, QRect r, int maxVal)
 {
        int z = (r.bottom() - r.top())/2;
 int Plot::yCoordOf(int v, QRect r, int maxVal)
 {
        int z = (r.bottom() - r.top())/2;

+       if ( maxVal == 0 ) maxVal++;

        return -(z * v) / maxVal + z;
 }
 
        return -(z * v) / maxVal + z;
 }
 


@@ -266,6 +293,32 @@ QColor Plot::getColor(int graphNum)
        }
 }
 
        }
 }
 

+void Plot::setMaxAndStart(int *buffer, int len, QRect plotRect)
+{
+       if (len == 0) return;
+       startMax = (len - (int)((plotRect.right() - plotRect.left() - 40) / GraphPixelsPerPoint));
+       if(startMax < 0) {
+               startMax = 0;
+       }
+       if(GraphStart > startMax) {
+               GraphStart = startMax;
+       }
+       if (GraphStart > len) return;
+       int vMin = INT_MAX, vMax = INT_MIN, v = 0;
+       int sample_index = GraphStart ;
+       for( ; sample_index < len && xCoordOf(sample_index,plotRect) < plotRect.right() ; sample_index++) {
+
+               v = buffer[sample_index];
+               if(v < vMin) vMin = v;
+               if(v > vMax) vMax = v;
+       }
+
+       g_absVMax = 0;
+       if(fabs( (double) vMin) > g_absVMax) g_absVMax = (int)fabs( (double) vMin);
+       if(fabs( (double) vMax) > g_absVMax) g_absVMax = (int)fabs( (double) vMax);
+       g_absVMax = (int)(g_absVMax*1.25 + 1);
+}
+

 void Plot::PlotDemod(uint8_t *buffer, size_t len, QRect plotRect, QRect annotationRect, QPainter *painter, int graphNum, int plotOffset)
 {
        if (len == 0 || PlotGridX <= 0) return;
 void Plot::PlotDemod(uint8_t *buffer, size_t len, QRect plotRect, QRect annotationRect, QPainter *painter, int graphNum, int plotOffset)
 {
        if (len == 0 || PlotGridX <= 0) return;


@@ -327,47 +380,16 @@ void Plot::PlotGraph(int *buffer, int len, QRect plotRect, QRect annotationRect,
        if (len == 0) return;
        //clock_t begin = clock();
        QPainterPath penPath;
        if (len == 0) return;
        //clock_t begin = clock();
        QPainterPath penPath;

-
-       startMax = (len - (int)((plotRect.right() - plotRect.left() - 40) / GraphPixelsPerPoint));
-       if(startMax < 0) {
-               startMax = 0;
-       }
-       if(GraphStart > startMax) {
-               GraphStart = startMax;
-       }
-       if (GraphStart > len) return;
-       int vMin = INT_MAX, vMax = INT_MIN, vMean = 0, v = 0, absVMax = 0;
-       int sample_index = GraphStart ;
-       for( ; sample_index < len && xCoordOf(sample_index,plotRect) < plotRect.right() ; sample_index++) {
-
-               v = buffer[sample_index];
-               if(v < vMin) vMin = v;
-               if(v > vMax) vMax = v;
-               vMean += v;
-       }
-
-       vMean /= (sample_index - GraphStart);
-
-       if(fabs( (double) vMin) > absVMax) absVMax = (int)fabs( (double) vMin);
-       if(fabs( (double) vMax) > absVMax) absVMax = (int)fabs( (double) vMax);
-       absVMax = (int)(absVMax*1.25 + 1);
-       // number of points that will be plotted
-       int span = (int)((plotRect.right() - plotRect.left()) / GraphPixelsPerPoint);
-       // one label every 100 pixels, let us say
-       int labels = (plotRect.right() - plotRect.left() - 40) / 100;
-       if(labels <= 0) labels = 1;
-       int pointsPerLabel = span / labels;
-       if(pointsPerLabel <= 0) pointsPerLabel = 1;
-
+       int vMin = INT_MAX, vMax = INT_MIN, vMean = 0, v = 0, i = 0;

        int x = xCoordOf(GraphStart, plotRect);
        int x = xCoordOf(GraphStart, plotRect);

-       int y = yCoordOf(buffer[GraphStart],plotRect,absVMax);
+       int y = yCoordOf(buffer[GraphStart],plotRect,g_absVMax);

        penPath.moveTo(x, y);
        penPath.moveTo(x, y);

-       for(int i = GraphStart; i < len && xCoordOf(i, plotRect) < plotRect.right(); i++) {
+       for(i = GraphStart; i < len && xCoordOf(i, plotRect) < plotRect.right(); i++) {

 
                x = xCoordOf(i, plotRect);
                v = buffer[i];
 
 
                x = xCoordOf(i, plotRect);
                v = buffer[i];
 

-               y = yCoordOf( v, plotRect, absVMax);//(y * (r.top() - r.bottom()) / (2*absYMax)) + zeroHeight;
+               y = yCoordOf( v, plotRect, g_absVMax);

 
                penPath.lineTo(x, y);
 
 
                penPath.lineTo(x, y);
 


@@ -375,7 +397,12 @@ void Plot::PlotGraph(int *buffer, int len, QRect plotRect, QRect annotationRect,
                        QRect f(QPoint(x - 3, y - 3),QPoint(x + 3, y + 3));
                        painter->fillRect(f, QColor(100, 255, 100));
                }
                        QRect f(QPoint(x - 3, y - 3),QPoint(x + 3, y + 3));
                        painter->fillRect(f, QColor(100, 255, 100));
                }

+               //catch stats
+               if(v < vMin) vMin = v;
+               if(v > vMax) vMax = v;
+               vMean += v;

        }
        }

+       vMean /= (i - GraphStart);

 
        painter->setPen(getColor(graphNum));
 
 
        painter->setPen(getColor(graphNum));
 


@@ -383,7 +410,7 @@ void Plot::PlotGraph(int *buffer, int len, QRect plotRect, QRect annotationRect,
        int xo = 5+(graphNum*40);
        painter->drawLine(xo, plotRect.top(),xo, plotRect.bottom());
 
        int xo = 5+(graphNum*40);
        painter->drawLine(xo, plotRect.top(),xo, plotRect.bottom());
 

-       int vMarkers = (absVMax - (absVMax % 10)) / 5;
+       int vMarkers = (g_absVMax - (g_absVMax % 10)) / 5;

        int minYDist = 40; //Minimum pixel-distance between markers
 
        char yLbl[20];
        int minYDist = 40; //Minimum pixel-distance between markers
 
        char yLbl[20];


@@ -391,10 +418,10 @@ void Plot::PlotGraph(int *buffer, int len, QRect plotRect, QRect annotationRect,
        int n = 0;
        int lasty0 = 65535;
 
        int n = 0;
        int lasty0 = 65535;
 

-       for(int v = vMarkers; yCoordOf(v,plotRect,absVMax) > plotRect.top() && n < 20; v+= vMarkers ,n++)
+       for(v = vMarkers; yCoordOf(v,plotRect,g_absVMax) > plotRect.top() && n < 20; v+= vMarkers ,n++)

        {
        {

-               int y0 = yCoordOf(v,plotRect,absVMax);
-               int y1 = yCoordOf(-v,plotRect,absVMax);
+               int y0 = yCoordOf(v,plotRect,g_absVMax);
+               int y1 = yCoordOf(-v,plotRect,g_absVMax);

 
                if(lasty0 - y0 < minYDist) continue;
 
 
                if(lasty0 - y0 < minYDist) continue;
 


@@ -413,7 +440,7 @@ void Plot::PlotGraph(int *buffer, int len, QRect plotRect, QRect annotationRect,
        painter->drawPath(penPath);
        char str[200];
        sprintf(str, "max=%d  min=%d  mean=%d  n=%d/%d  CursorAVal=[%d]  CursorBVal=[%d]",
        painter->drawPath(penPath);
        char str[200];
        sprintf(str, "max=%d  min=%d  mean=%d  n=%d/%d  CursorAVal=[%d]  CursorBVal=[%d]",

-                       vMax, vMin, vMean, sample_index, len, buffer[CursorAPos], buffer[CursorBPos]);
+                       vMax, vMin, vMean, i, len, buffer[CursorAPos], buffer[CursorBPos]);

        painter->drawText(20, annotationRect.bottom() - 23 - 20 * graphNum, str);
 
        //clock_t end = clock();
        painter->drawText(20, annotationRect.bottom() - 23 - 20 * graphNum, str);
 
        //clock_t end = clock();


@@ -423,20 +450,29 @@ void Plot::PlotGraph(int *buffer, int len, QRect plotRect, QRect annotationRect,
 
 void Plot::plotGridLines(QPainter* painter,QRect r)
 {
 
 void Plot::plotGridLines(QPainter* painter,QRect r)
 {

-       int zeroHeight = r.top() + (r.bottom() - r.top()) / 2;
+       // set GridOffset
+       if (PlotGridX <= 0) return;
+       int offset = GridOffset;
+       if (GridLocked && PlotGridX) {
+               offset = GridOffset + PlotGridX - (GraphStart % PlotGridX);
+       } else if (!GridLocked && GraphStart > 0 && PlotGridX) {
+               offset = PlotGridX-((GraphStart - offset) % PlotGridX) + GraphStart - unlockStart;
+       }
+       offset %= PlotGridX;
+       if (offset < 0) offset += PlotGridX;

 
        int i;
        int grid_delta_x = (int) (PlotGridX * GraphPixelsPerPoint);
 
        int i;
        int grid_delta_x = (int) (PlotGridX * GraphPixelsPerPoint);

-       int grid_delta_y = (int) (PlotGridY * GraphPixelsPerPoint);
+       int grid_delta_y = PlotGridY;

        if ((PlotGridX > 0) && ((PlotGridX * GraphPixelsPerPoint) > 1)) {
        if ((PlotGridX > 0) && ((PlotGridX * GraphPixelsPerPoint) > 1)) {

-               for(i = (GridOffset * GraphPixelsPerPoint); i < r.right(); i += grid_delta_x) {
+               for(i = (offset * GraphPixelsPerPoint); i < r.right(); i += grid_delta_x) {

                        painter->drawLine(r.left()+i, r.top(), r.left()+i, r.bottom());
                } 
                        painter->drawLine(r.left()+i, r.top(), r.left()+i, r.bottom());
                } 

-       } 
-       if ((PlotGridY > 0) && ((PlotGridY * GraphPixelsPerPoint) > 1)){
-               for(i = 0; i < ((r.top() + r.bottom())>>1); i += grid_delta_y) {
-                       painter->drawLine(r.left(),zeroHeight + i,r.right(),zeroHeight + i);
-                       painter->drawLine(r.left(),zeroHeight - i,r.right(),zeroHeight - i);
+       }
+       if (PlotGridY > 0) {
+               for(i = 0; yCoordOf(i,r,g_absVMax) > r.top(); i += grid_delta_y) {
+                       painter->drawLine( r.left(), yCoordOf(i,r,g_absVMax), r.right(), yCoordOf(i,r,g_absVMax) );
+                       painter->drawLine( r.left(), yCoordOf(i*-1,r,g_absVMax), r.right(), yCoordOf(i*-1,r,g_absVMax) );

                }
        }
 }
                }
        }
 }


@@ -446,6 +482,7 @@ void Plot::plotGridLines(QPainter* painter,QRect r)
 
 void Plot::paintEvent(QPaintEvent *event)
 {
 
 void Plot::paintEvent(QPaintEvent *event)
 {

+

        QPainter painter(this);
        QBrush brush(QColor(100, 255, 100));
        QPen pen(QColor(100, 255, 100));
        QPainter painter(this);
        QBrush brush(QColor(100, 255, 100));
        QPen pen(QColor(100, 255, 100));


@@ -473,6 +510,9 @@ void Plot::paintEvent(QPaintEvent *event)
        //Black foreground
        painter.fillRect(plotRect, QColor(0, 0, 0));
 
        //Black foreground
        painter.fillRect(plotRect, QColor(0, 0, 0));
 

+       //init graph variables
+       setMaxAndStart(GraphBuffer,GraphTraceLen,plotRect);
+

        // center line
        int zeroHeight = plotRect.top() + (plotRect.bottom() - plotRect.top()) / 2;
        painter.setPen(QColor(100, 100, 100));
        // center line
        int zeroHeight = plotRect.top() + (plotRect.bottom() - plotRect.top()) / 2;
        painter.setPen(QColor(100, 100, 100));


@@ -481,11 +521,15 @@ void Plot::paintEvent(QPaintEvent *event)
        plotGridLines(&painter, plotRect);
 
        //Start painting graph
        plotGridLines(&painter, plotRect);
 
        //Start painting graph

+       PlotGraph(GraphBuffer, GraphTraceLen,plotRect,infoRect,&painter,0);

        if (showDemod && DemodBufferLen > 8) {
                PlotDemod(DemodBuffer, DemodBufferLen,plotRect,infoRect,&painter,2,g_DemodStartIdx);
        }
        if (showDemod && DemodBufferLen > 8) {
                PlotDemod(DemodBuffer, DemodBufferLen,plotRect,infoRect,&painter,2,g_DemodStartIdx);
        }

-       PlotGraph(s_Buff, GraphTraceLen,plotRect,infoRect,&painter,1);
-       PlotGraph(GraphBuffer, GraphTraceLen,plotRect,infoRect,&painter,0);
+       if (g_useOverlays) {
+               //init graph variables
+               setMaxAndStart(s_Buff,GraphTraceLen,plotRect);
+               PlotGraph(s_Buff, GraphTraceLen,plotRect,infoRect,&painter,1);
+       }

        // End graph drawing
 
        //Draw the cursors
        // End graph drawing
 
        //Draw the cursors


@@ -536,12 +580,15 @@ Plot::Plot(QWidget *parent) : QWidget(parent), GraphStart(0), GraphPixelsPerPoin
        CursorBPos = 0;
 
        setWindowTitle(tr("Sliders"));
        CursorBPos = 0;
 
        setWindowTitle(tr("Sliders"));

+
+       master = parent;

 }
 
 void Plot::closeEvent(QCloseEvent *event)
 {
        event->ignore();
        this->hide();
 }
 
 void Plot::closeEvent(QCloseEvent *event)
 {
        event->ignore();
        this->hide();

+       g_useOverlays = false;

 }
 
 void Plot::mouseMoveEvent(QMouseEvent *event)
 }
 
 void Plot::mouseMoveEvent(QMouseEvent *event)


@@ -563,9 +610,6 @@ void Plot::mouseMoveEvent(QMouseEvent *event)
 void Plot::keyPressEvent(QKeyEvent *event)
 {
        int     offset;
 void Plot::keyPressEvent(QKeyEvent *event)
 {
        int     offset;

-       int     gridchanged;
-
-       gridchanged= 0;

 
        if(event->modifiers() & Qt::ShiftModifier) {
                if (PlotGridX)
 
        if(event->modifiers() & Qt::ShiftModifier) {
                if (PlotGridX)


@@ -593,53 +637,18 @@ void Plot::keyPressEvent(QKeyEvent *event)
 
                case Qt::Key_Right:
                        if(GraphPixelsPerPoint < 20) {
 
                case Qt::Key_Right:
                        if(GraphPixelsPerPoint < 20) {

-                               if (PlotGridX && GridLocked && GraphStart < startMax){
-                                       GridOffset -= offset;
-                                       GridOffset %= PlotGridX;
-                                       gridchanged= 1;
-                               }

                                GraphStart += offset;
                        } else {
                                GraphStart += offset;
                        } else {

-                               if (PlotGridX && GridLocked && GraphStart < startMax){
-                                       GridOffset--;
-                                       GridOffset %= PlotGridX;
-                                       gridchanged= 1;
-                               }

                                GraphStart++;
                        }
                                GraphStart++;
                        }

-                       if(GridOffset < 0) {
-                               GridOffset += PlotGridX;
-                       }
-                       if (gridchanged)
-                               if (GraphStart > startMax) {
-                                       GridOffset += (GraphStart - startMax);
-                                       GridOffset %= PlotGridX;
-                               }

                        break;
 
                case Qt::Key_Left:
                        if(GraphPixelsPerPoint < 20) {
                        break;
 
                case Qt::Key_Left:
                        if(GraphPixelsPerPoint < 20) {

-                               if (PlotGridX && GridLocked && GraphStart > 0){
-                                       GridOffset += offset;
-                                       GridOffset %= PlotGridX;
-                                       gridchanged= 1;
-                               }

                                GraphStart -= offset;
                        } else {
                                GraphStart -= offset;
                        } else {

-                               if (PlotGridX && GridLocked && GraphStart > 0){
-                                       GridOffset++;
-                                       GridOffset %= PlotGridX;
-                                       gridchanged= 1;
-                               }

                                GraphStart--;
                        }
                                GraphStart--;
                        }

-                       if (gridchanged){
-                               if (GraphStart < 0)
-                                       GridOffset += GraphStart;
-                               if(GridOffset < 0)
-                                       GridOffset += PlotGridX;
-                       GridOffset %= PlotGridX;
-                       }

                        break;
 
                case Qt::Key_G:
                        break;
 
                case Qt::Key_G:


@@ -649,7 +658,7 @@ void Plot::keyPressEvent(QKeyEvent *event)
                        } else {
                                PlotGridX= PlotGridXdefault;
                                PlotGridY= PlotGridYdefault;
                        } else {
                                PlotGridX= PlotGridXdefault;
                                PlotGridY= PlotGridYdefault;

-                               }
+                       }

                        break;
 
                case Qt::Key_H:
                        break;
 
                case Qt::Key_H:


@@ -674,11 +683,15 @@ void Plot::keyPressEvent(QKeyEvent *event)
                        break;
 
                case Qt::Key_L:
                        break;
 
                case Qt::Key_L:

-                       GridLocked= !GridLocked;
+                       GridLocked = !GridLocked;
+                       if (GridLocked)
+                               GridOffset += (GraphStart - unlockStart);
+                       else
+                               unlockStart = GraphStart;

                        break;
 
                case Qt::Key_Q:
                        break;
 
                case Qt::Key_Q:

-                       this->hide();
+                       master->hide();

                        break;
 
                default:
                        break;
 
                default: