将 PDF 文档的创建从 iOS 移植到 Mac OS X
我正在将我的代码从 iPhone 移植到 Mac,但我不知道如何在 Mac 中执行此操作。这是我尝试转换的代码,我知道 Mac 中没有 UIGraphic。有人可以给我指点指南或给我快速提示吗?谢谢。
NSString *newFilePath = @"path/to/your/newfile.pdf";
NSString *templatePath = @"path/to/your/template.pdf";
//create empty pdf file;
UIGraphicsBeginPDFContextToFile(newFilePath, CGRectMake(0, 0, 792, 612), nil);
CFURLRef url = CFURLCreateWithFileSystemPath (NULL, (CFStringRef)templatePath, kCFURLPOSIXPathStyle, 0);
//open template file
CGPDFDocumentRef templateDocument = CGPDFDocumentCreateWithURL(url);
CFRelease(url);
//get amount of pages in template
size_t count = CGPDFDocumentGetNumberOfPages(templateDocument);
//for each page in template
for (size_t pageNumber = 1; pageNumber <= count; pageNumber++) {
//get bounds of template page
CGPDFPageRef templatePage = CGPDFDocumentGetPage(templateDocument, pageNumber);
CGRect templatePageBounds = CGPDFPageGetBoxRect(templatePage, kCGPDFCropBox);
//create empty page with corresponding bounds in new document
UIGraphicsBeginPDFPageWithInfo(templatePageBounds, nil);
CGContextRef context = UIGraphicsGetCurrentContext();
//flip context due to different origins
CGContextTranslateCTM(context, 0.0, templatePageBounds.size.height);
CGContextScaleCTM(context, 1.0, -1.0);
//copy content of template page on the corresponding page in new file
CGContextDrawPDFPage(context, templatePage);
//flip context back
CGContextTranslateCTM(context, 0.0, templatePageBounds.size.height);
CGContextScaleCTM(context, 1.0, -1.0);
/* Here you can do any drawings */
[@"Test" drawAtPoint:CGPointMake(200, 300) withFont:[UIFont systemFontOfSize:20]];
}
CGPDFDocumentRelease(templateDocument);
UIGraphicsEndPDFContext();
I am porting my code from iPhone to Mac and I have no idea how I can do this in Mac. Here's my code that I am trying to convert and I know that there's no UIGraphic in Mac. Can someone point me to a guide or give me a quick hint? Thanks.
NSString *newFilePath = @"path/to/your/newfile.pdf";
NSString *templatePath = @"path/to/your/template.pdf";
//create empty pdf file;
UIGraphicsBeginPDFContextToFile(newFilePath, CGRectMake(0, 0, 792, 612), nil);
CFURLRef url = CFURLCreateWithFileSystemPath (NULL, (CFStringRef)templatePath, kCFURLPOSIXPathStyle, 0);
//open template file
CGPDFDocumentRef templateDocument = CGPDFDocumentCreateWithURL(url);
CFRelease(url);
//get amount of pages in template
size_t count = CGPDFDocumentGetNumberOfPages(templateDocument);
//for each page in template
for (size_t pageNumber = 1; pageNumber <= count; pageNumber++) {
//get bounds of template page
CGPDFPageRef templatePage = CGPDFDocumentGetPage(templateDocument, pageNumber);
CGRect templatePageBounds = CGPDFPageGetBoxRect(templatePage, kCGPDFCropBox);
//create empty page with corresponding bounds in new document
UIGraphicsBeginPDFPageWithInfo(templatePageBounds, nil);
CGContextRef context = UIGraphicsGetCurrentContext();
//flip context due to different origins
CGContextTranslateCTM(context, 0.0, templatePageBounds.size.height);
CGContextScaleCTM(context, 1.0, -1.0);
//copy content of template page on the corresponding page in new file
CGContextDrawPDFPage(context, templatePage);
//flip context back
CGContextTranslateCTM(context, 0.0, templatePageBounds.size.height);
CGContextScaleCTM(context, 1.0, -1.0);
/* Here you can do any drawings */
[@"Test" drawAtPoint:CGPointMake(200, 300) withFont:[UIFont systemFontOfSize:20]];
}
CGPDFDocumentRelease(templateDocument);
UIGraphicsEndPDFContext();
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使用
CGPDFContextCreateWithURL
而不是UIGraphicsBeginPDFContextToFile
(参数非常相似)。要开始/结束页面,请使用 CGPDFContextBeginPage 和 CGPDFContextEndPage 。完成后,调用CGPDFContextClose
而不是UIGraphicsEndPDFContext
。其余部分可以保持不变 – iOS 和 Mac OS X 上都存在 Core Graphics – 这也意味着如果您想在 iOS 和 Mac OS X 上使用相同的代码,您也可以在 iOS 上使用我上面提到的功能平台。
Use
CGPDFContextCreateWithURL
instead ofUIGraphicsBeginPDFContextToFile
(the parameters are very similar). To begin/end pages, useCGPDFContextBeginPage
andCGPDFContextEndPage
. When you're done, callCGPDFContextClose
instead ofUIGraphicsEndPDFContext
.The rest can remain the same – Core Graphics exists on both iOS and Mac OS X – which also means that you could use the functions I've mentioned above on iOS as well if you want to use the same code on both platforms.
Swift 4、macOS High Sierra 更新
Swift 4, macOS High Sierra Update