alivepdf——flex导出pdf工具，可根据图形大小调节整个显示, varpanoramaCanvasPDF:PDF=newPDF(Orientation.PORTRAIT,"Mm",Size.A3);panoramaCanvasPDF.setDisplayMode(Display.FULL_PAGE); panoramaCanvasPDF.addImage(panoramaCanvasBitmap,newResize(Mode.FIT_TO_PAGE,Position.LEFT),0,0);