const canvasApi = require('zhf.canvas-api');
- 画多行文字
canvasApi.drawMoreLineText({ctx, text, x, y, fontSize, fontFamily, lineHeight, lineWidth, lineNum, isFillEllipsis, drawMethod});
- 画圆角矩形
canvasApi.drawRoundRect(ctx, x, y, w, h, r);
- 设置阴影
canvasApisetShadow(ctx, offsetX, offsetY, blur, color);