Hello, for my bottom graph on my screenshot below, is it possible to dynamically change the black background to red? Indeed, when the microphone saturates like on the screenshot below I want to change the black background to red for 2 seconds, so I need to do it programmatically.
https://i.ibb.co/7XCLDwf/sature.png
I init my bottom graph like this :
@Override
public void initGraph(Context context) {
Log.d(TAG, "initGraphs");
SciChartSurface audioStreamSciChart = new SciChartSurface(context);
mAudiostream.addView(audioStreamSciChart);
xAxis = new NumericAxis(context);
xAxis.setVisibleRange(new DoubleRange(startAudioStreamRange, endAudioStreamRange));
xAxis.setDrawLabels(false);
xAxis.setDrawMinorTicks(false);
xAxis.setDrawMajorBands(false);
xAxis.setDrawMinorGridLines(false);
audioStreamSciChart.getXAxes().add(xAxis);
NumericAxis yAxis = new NumericAxis(context);
yAxis.setVisibleRange(new DoubleRange(-1.0, 1.0));
yAxis.setDrawLabels(true);
yAxis.setDrawMinorTicks(false);
yAxis.setDrawMajorBands(false);
yAxis.setDrawMinorGridLines(false);
yAxis.setAxisAlignment(AxisAlignment.Left);
audioStreamSciChart.getYAxes().add(yAxis);
float lineThickness = SciChartExtensionsKt.dip(context, 1.0F);
FastLineRenderableSeries f = new FastLineRenderableSeries();
f.setDataSeries(scichartTools.getAudioDS());
f.setStrokeStyle(new SolidPenStyle(ColorUtil.Grey, true, lineThickness, null));
audioStreamSciChart.getRenderableSeries().add(f);
scichartLayout = mAudiostream.getChildAt(0);
}
I can keep a reference of my FastLineRenderableSeries to do it but i didn’t find any method to change his backgroud color.
Can i ?
Thanks,
Wavely
- damien gaillard asked 6 years ago
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Hi Damien,
I’m not sure what you mean by background of FastLineRenderableSeries because this series type doesn’t have any background to draw. It just draws a lines and black background is provided by chart itself and you can assign it as for regular Android View:
// set background for whole chart
surface.setBackgroundResource(R.drawable.example_box_annotation_background_1);
// set background only for renderable series area where series are drawn
final View renderableSeriesArea = (View) surface.getRenderableSeriesArea();
renderableSeriesArea.setBackgroundResource(R.drawable.example_box_annotation_background_1);
Another alternative is to create custom renderable series and add drawing of background there:
class CustomFastLineRenderableSeries extends FastLineRenderableSeries {
private final BrushStyle redFillStyle;
CustomFastLineRenderableSeries() {
this.redFillStyle = new SolidBrushStyle(Color.RED);
}
@Override
protected void internalDraw(IRenderContext2D renderContext, IAssetManager2D assetManager, ISeriesRenderPassData renderPassData) {
super.internalDraw(renderContext, assetManager, renderPassData);
if(needToDrawRedFill) {
final IBrush2D brush = assetManager.createBrush(redFillStyle);
renderContext.fillRect(0, 0, renderContext.getViewportWidth(), renderContext.getViewportHeight(), brush);
}
}
}
Is this suitable for your needs?
Best regards,
Yura
- Yura Khariton answered 6 years ago
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Thanks for your answer,
I used custom renderable series and it works great
Thank you
- damien gaillard answered 6 years ago
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