C++ (Cpp) MultiLayer::linkXLayerAxes示例

void FFT::outputGraphs()
{
	createOutputGraph();

	MultiLayer *ml = d_output_graph->multiLayer();

	d_output_graph->setTitle(QString::null);
	d_output_graph->setYAxisTitle(tr("Angle (deg)"));
	d_output_graph->enableAxis(QwtPlot::xTop, true);
	d_output_graph->enableAxis(QwtPlot::yRight, true);
	if (!d_inverse)
		d_output_graph->setAxisTitle(QwtPlot::xTop, tr("Frequency") + " (" + tr("Hz") + ")");
	else
		d_output_graph->setAxisTitle(QwtPlot::xTop, tr("Time") + + " (" + tr("s") + ")");

	ScaleDraw *sd = (ScaleDraw *)d_output_graph->axisScaleDraw(QwtPlot::yLeft);
	if (sd)
		sd->setShowTicksPolicy(ScaleDraw::HideBegin);
	sd = (ScaleDraw *)d_output_graph->axisScaleDraw(QwtPlot::yRight);
	if (sd)
		sd->setShowTicksPolicy(ScaleDraw::HideBegin);
	sd = (ScaleDraw *)d_output_graph->axisScaleDraw(QwtPlot::xBottom);
	if (sd){
		sd->setShowTicksPolicy(ScaleDraw::HideBeginEnd);
		sd->enableComponent(QwtAbstractScaleDraw::Backbone, false);
	}

	QString tableName = d_result_table->objectName();
	PlotCurve *pc = d_output_graph->insertCurve(d_result_table, 0, tableName + "_" + tr("Angle"), 0);
	pc->setPen(QPen(d_curveColor, 1));
	d_output_graph->removeLegend();
	d_output_graph->updatePlot();

	Graph *g = ml->addLayer(0, 0, 0, 0, true);
	g->setTitle(QString::null);
	if (!d_inverse)
		g->setXAxisTitle(tr("Frequency") + " (" + tr("Hz") + ")");
	else
		g->setXAxisTitle(tr("Time") + + " (" + tr("s") + ")");
	g->setYAxisTitle(tr("Amplitude"));
	g->removeLegend();

	sd = (ScaleDraw *)g->axisScaleDraw(QwtPlot::xTop);
	if (sd)
		sd->setShowTicksPolicy(ScaleDraw::HideBeginEnd);

	PlotCurve *c = g->insertCurve(d_result_table, 0, tableName + "_" + tr("Amplitude"), 0);
	c->setPen(QPen(d_curveColor, 1));
	g->updatePlot();

	double rb = g->axisScaleDiv(QwtPlot::xBottom)->upperBound();
	d_output_graph->setAxisScale(QwtPlot::xBottom, 0, rb);
	d_output_graph->setAxisScale(QwtPlot::xTop, 0, rb);
	g->setAxisScale(QwtPlot::xBottom, 0, rb);
	g->setAxisScale(QwtPlot::xTop, 0, rb);

	ml->setAlignPolicy(MultiLayer::AlignCanvases);
	ml->setRows(2);
	ml->setCols(1);
	ml->setSpacing(0, 0);
	ml->linkXLayerAxes();
	ml->setCommonLayerAxes(false, true);
	ml->arrangeLayers(false, false);
}