setTextInlineInfo method

void setTextInlineInfo(LyricDrawInfo drawInfo, LyricUI ui, String text)

Implementation

void setTextInlineInfo(LyricDrawInfo drawInfo, LyricUI ui, String text) {
  var linePaint = drawInfo.playingMainTextPainter!;
  var metrics = linePaint.computeLineMetrics();
  var targetLineHeight = 0.0;
  var start = 0;
  List<LyricInlineDrawInfo> lineList = [];
  metrics.forEach((element) {
    //起始偏移量X
    var startOffsetX = 0.0;
    switch (ui.getLyricTextAligin()) {
      case TextAlign.right:
        startOffsetX = linePaint.width - element.width;
        break;
      case TextAlign.center:
        startOffsetX = (linePaint.width - element.width) / 2;
        break;
      default:
        break;
    }
    var offsetX = element.width;
    switch (ui.getLyricTextAligin()) {
      case TextAlign.right:
        offsetX = linePaint.width;
        break;
      case TextAlign.center:
        offsetX = (linePaint.width - element.width) / 2 + element.width;
        break;
      default:
        break;
    }
    var end = linePaint
        .getPositionForOffset(Offset(offsetX, targetLineHeight))
        .offset;
    var lineText = text.substring(start, end);
    LyricsLog.logD("获取行内信息：第${element.lineNumber}行，内容：$lineText");
    lineList.add(LyricInlineDrawInfo()
      ..raw = lineText
      ..number = element.lineNumber
      ..width = element.width
      ..height = element.height
      ..offset = Offset(startOffsetX, targetLineHeight));
    start = end;
    targetLineHeight += element.height;
  });
  drawInfo.inlineDrawList = lineList;
}