initBitmap method

Implementation

@mustCallSuper
Future<void> initBitmap(SymbolCache? symbolCache) async {
  //print("initResources called for $src");
  if (bitmapInvalid) return;

  if (bitmap != null) return;

  if (bitmapSrc == null || bitmapSrc!.isEmpty) {
    return;
  }

  if (symbolCache == null) {
    _log.warning("SymbolCache for bitmapMixin $bitmapSrc not defined");
    return;
  }
  try {
    //_log.info("$bitmapWidth - $bitmapHeight --> $bitmapPercent");
    bitmap = await symbolCache.getOrCreateSymbol(bitmapSrc!, bitmapWidth.round(), bitmapHeight.round());
    if (bitmap == null || bitmap!.getWidth() == 0 || bitmap!.getHeight() == 0) {
      _log.warning("bitmap $bitmapSrc not found or no width/height, ignoring");
      bitmap = null;
      bitmapInvalid = true;
      return;
    }
    //bitmap!.incrementRefCount();
    if (bitmapPaint == null) {
      bitmapPaint = GraphicFactory().createPaint();
      bitmapPaint!.setColorFromNumber(0xff000000);
    }
  } catch (e) {
    _log.warning("${e.toString()}, ignore missing bitmap in rendering");
    //print("Exception $e\nStacktrace $stacktrace");
    bitmap = null;
    bitmapInvalid = true;
  }
}