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gapedrawingwidget.cpp

#include "gapedrawingwidget.h"
#include "qwt_plot_pixframe.h"
#include <stdio.h>

GapeDrawingWidget::GapeDrawingWidget (QWidget* parent)//, double* xData, double* yData, int bufSize)
: QwtPlot(parent) {

    //preferredSize.setHeight(GAPE_DRAWING_WIDGET_MIN_HEIGHT);
    //preferredSize.setWidth(GAPE_DRAWING_WIDGET_MIN_WIDTH);

    setPlotBorder(GAPE_DRAWING_WIDGET_BORDER_OFFSET);
    key = insertCurve(NULL);//Samples in Time Domain");
    connect(this, SIGNAL(plotMouseMoved(const QMouseEvent &)), this, SLOT(receiveMouseMoveEvent(const QMouseEvent &)));
    setAutoReplot(false);
    //setAutoReplot(true);
    setMinimumSize(GAPE_DRAWING_WIDGET_MIN_WIDTH, GAPE_DRAWING_WIDGET_MIN_HEIGHT);
    //setBackgroundColor(GAPE_DRAWING_WIDGET_BG_COLOR);
    //setCurveColor(GAPE_DRAWING_WIDGET_CURVE_COLOR);
    enableGridY(true);
    enableGridX(false);
    //long mY = insertLineMarker("", QwtPlot::yLeft );
  //setMarkerYPos( mY, 0.0 );
  //setAxisScale(QwtPlot::xBottom, 0.0,1.0);
    //setAxisScale(QwtPlot::yLeft, -1.0,1.0);
}


void GapeDrawingWidget::setRawData(double* xData, double* yData, int bufferSize) {
    //GapeConsts::reportError("GDW srd\n");
    setCurveRawData(key, xData, yData, bufferSize);
    //setCurveData(key, xData, yData, bufferSize);
}

void GapeDrawingWidget::receiveMouseMoveEvent(const QMouseEvent &e ) {
    //GapeConsts::reportError("GapeDrawingWidget rec mouse move!\n");
    //char msg[256];

    double x, y;

    //the pixels reported by mouse events are generally off by a bit, and either wt or qwt has a
    //bug/feature where negative coordinates are reported in when our plot area is given a border.
    //the x scales to a 0.0 - 1.0 range
    if (e.x() < 0) {
        x = 0.0;
    } else if (e.x() > d_frmPlot->width() - 2 * GAPE_DRAWING_WIDGET_BORDER_OFFSET) {
        x = 1.0;
    } else {
        x = (double) e.x() / (double) (d_frmPlot->width() - 2 * GAPE_DRAWING_WIDGET_BORDER_OFFSET);
    }

    //same bug thing here, and we also must flip our y coordinate, since qt uses top left = 0,0
    //we also scale to a 0.0 to 1.0 range
    if (e.y() < 0) {
        y = 1.0;
    } else if (e.y() > d_frmPlot->height() - 2 * GAPE_DRAWING_WIDGET_BORDER_OFFSET) {
        y = 0.0;
    } else {
        y = 1.0 - ((double) e.y() / (double) (d_frmPlot->height() - 2 * GAPE_DRAWING_WIDGET_BORDER_OFFSET));
    }

    //sprintf(msg,"pos = %g %g mouse = %d %d and max = %d %d\n",x,y,e.x(),e.y(),d_frmPlot->width(),d_frmPlot->height());
    //GapeConsts::reportError(msg);
    emit emitPoint(x,y);
}

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