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PORotating PDF document, shrinks after a while
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copied!<p>I have a problem in rotating the PDF document. I am able to rotate the document, but after some rotations the document is diminishing its dimensions. I can't find what's wrong. Here's my code:</p> <pre><code>//////// Creating document and pdfContext related code ////// -(IBAction)rotate { BOOL ok = [self CopyFileIfNotExists:@"Untitled.pdf"]; fileLoc = [self PathForFile:@"Untitled.pdf"]; angle = angle + 90; pdfDoc = [self MyGetPDFDocumentRef:[fileLoc UTF8String]]; CGPDFPageRef page = CGPDFDocumentGetPage (pdfDoc, 1); //CGRect pageRect = CGPDFPageGetBoxRect(page, kCGPDFMediaBox); CGRect pageRect = CGRectMake(0, 0, 612, 792); [self MyCreatePDFFile:pageRect :[fileLoc UTF8String]]; } -(void) MyCreatePDFFile :(CGRect)pageRect :(const char *)filename { CFStringRef path; CFURLRef url; CFMutableDictionaryRef myDictionary = NULL; path = CFStringCreateWithCString (NULL, filename, kCFStringEncodingUTF8); url = CFURLCreateWithFileSystemPath (NULL, path, kCFURLPOSIXPathStyle, 0); CFRelease (path); myDictionary = CFDictionaryCreateMutable(NULL, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); CFDictionarySetValue(myDictionary, kCGPDFContextTitle, CFSTR("My PDF File")); CFDictionarySetValue(myDictionary, kCGPDFContextCreator, CFSTR("My Name")); pdfContext = CGPDFContextCreateWithURL (url, &pageRect, myDictionary); CFRelease(myDictionary); CFRelease(url); CGContextBeginPage (pdfContext, &pageRect); [self myDrawContent:pdfContext]; CGContextEndPage (pdfContext); CGContextRelease (pdfContext); } -(void)myDrawContent:(CGContextRef )context { int noOfPages = CGPDFDocumentGetNumberOfPages(pdfDoc); CGRect pageRect = CGRectMake(0, 0, 612, 792); for( int i = 1 ; i <= noOfPages ; i++ ) { CGPDFPageRef page = CGPDFDocumentGetPage (pdfDoc, i); //pageRect = CGPDFPageGetBoxRect(page, kCGPDFMediaBox); //[self MyDisplayPDFPage:pdfContext :i :[fileLoc UTF8String]]; [self MyDrawPDFPageInRect:pdfContext :page :kCGPDFMediaBox :pageRect :angle :true]; } } -(void) MyDrawPDFPageInRect:(CGContextRef)context :(CGPDFPageRef)page :(CGPDFBox)box :(CGRect)rect :(int)rotation :(bool)preserveAspectRatio { //////// this is rotating code of PDF /// CGAffineTransform m; m = CGPDFPageGetDrawingTransform (page, box, rect, rotation, preserveAspectRatio); CGContextSaveGState (context); CGContextConcatCTM (context, m); CGRect pageframe = CGPDFPageGetBoxRect (page, box); CGContextClipToRect (context,pageframe); CGContextDrawPDFPage (context, page); CGContextRestoreGState (context); } -(CGPDFDocumentRef) MyGetPDFDocumentRef: (const char *)filename { CFStringRef path; CFURLRef url; CGPDFDocumentRef document; path = CFStringCreateWithCString (NULL, filename,kCFStringEncodingUTF8); url = CFURLCreateWithFileSystemPath (NULL, path, kCFURLPOSIXPathStyle, 0); CFRelease (path); document = CGPDFDocumentCreateWithURL (url); CFRelease(url); int count = CGPDFDocumentGetNumberOfPages (document); if (count == 0) { printf("`%s' needs at least one page!", filename); return NULL; } return document; } </code></pre>

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