我正在使用Quartz Sample:
使用此代码在视图上显示PDF内容 // PDF page drawing expects a Lower-Left coordinate system, so we flip the coordinate system
// before we start drawing.
CGContextTranslateCTM(context, 0.0, self.bounds.size.height);
CGContextScaleCTM(context, 1.0, -1.0);
// Grab the first PDF page
CGPDFPageRef page = CGPDFDocumentGetPage(pdf, pageNo);
// We're about to modify the context CTM to draw the PDF page where we want it, so save the graphics state in case we want to do more drawing
CGContextSaveGState(context);
// CGPDFPageGetDrawingTransform provides an easy way to get the transform for a PDF page. It will scale down to fit, including any
// base rotations necessary to display the PDF page correctly.
CGAffineTransform pdfTransform = CGPDFPageGetDrawingTransform(page, kCGPDFCropBox, self.bounds, 0, true);
// And apply the transform.
CGContextConcatCTM(context, pdfTransform);
// Finally, we draw the page and restore the graphics state for further manipulations!
CGContextDrawPDFPage(context, page);
CGContextRestoreGState(context);
使用这一切都很好。我想设置PDF上下文的边距,默认情况下每边显示50 px的边距。我尝试过CGContext方法但没有得到合适的方法。有人可以帮我吗?
答案 0 :(得分:0)
PDF并没有任何边距概念。如果您不是负责文档内容的人,那么您真正要做的就是缩小它。
答案 1 :(得分:0)
我在这里得到了答案