API tools faq
paste
Guest User

Untitled

a guest
Feb 17th, 2019
113
0
Never
Add comment
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
text 10.44 KB | None | 0 0
raw download clone embed print report
  1. -(void)createPDFfromUIView:(UIView*)aView saveToDocumentsWithFileName:(NSString*)aFilename
  2. {
  3. // Creates a mutable data object for updating with binary data, like a byte array
  4. UIWebView *webView = (UIWebView*)aView;
  5. NSString *heightStr = [webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollHeight;"];
  6.  
  7. int height = [heightStr intValue];
  8.  
  9. // Get the number of pages needed to print. 9 * 72 = 648
  10. int pages = ceil(height / 648.0);
  11.  
  12. NSMutableData *pdfData = [NSMutableData data];
  13. UIGraphicsBeginPDFContextToData( pdfData, CGRectZero, nil );
  14. CGRect frame = [webView frame];
  15. for (int i = 0; i < pages; i++) {
  16. // Check to see if page draws more than the height of the UIWebView
  17. if ((i+1) * 648 > height) {
  18. CGRect f = [webView frame];
  19. f.size.height -= (((i+1) * 648.0) - height);
  20. [webView setFrame: f];
  21. }
  22.  
  23. UIGraphicsBeginPDFPage();
  24. CGContextRef currentContext = UIGraphicsGetCurrentContext();
  25. CGContextTranslateCTM(currentContext, 72, 72); // Translate for 1" margins
  26.  
  27. [[[webView subviews] lastObject] setContentOffset:CGPointMake(0, 648 * i) animated:NO];
  28. [webView.layer renderInContext:currentContext];
  29. }
  30.  
  31. UIGraphicsEndPDFContext();
  32. // Retrieves the document directories from the iOS device
  33. NSArray* documentDirectories = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES);
  34.  
  35. NSString* documentDirectory = [documentDirectories objectAtIndex:0];
  36. NSString* documentDirectoryFilename = [documentDirectory stringByAppendingPathComponent:aFilename];
  37.  
  38. // instructs the mutable data object to write its context to a file on disk
  39. [pdfData writeToFile:documentDirectoryFilename atomically:YES];
  40. [webView setFrame:frame];
  41. NSLog(@"documentDirectoryFileName: %@",documentDirectoryFilename);
  42. }
  43.  
  44. @interface UIPrintPageRenderer (PDF)
  45. - (NSData*) printToPDF;
  46. @end
  47.  
  48. @implementation UIPrintPageRenderer (PDF)
  49. - (NSData*) printToPDF
  50. {
  51. NSMutableData *pdfData = [NSMutableData data];
  52. UIGraphicsBeginPDFContextToData( pdfData, self.paperRect, nil );
  53. [self prepareForDrawingPages: NSMakeRange(0, self.numberOfPages)];
  54. CGRect bounds = UIGraphicsGetPDFContextBounds();
  55. for ( int i = 0 ; i < self.numberOfPages ; i++ )
  56. {
  57. UIGraphicsBeginPDFPage();
  58. [self drawPageAtIndex: i inRect: bounds];
  59. }
  60. UIGraphicsEndPDFContext();
  61. return pdfData;
  62. }
  63. @end
  64.  
  65. #define kPaperSizeA4 CGSizeMake(595.2,841.8)
  66.  
  67. - (void)webViewDidFinishLoad:(UIWebView *)awebView
  68. {
  69. if (awebView.isLoading)
  70. return;
  71.  
  72. UIPrintPageRenderer *render = [[UIPrintPageRenderer alloc] init];
  73. [render addPrintFormatter:awebView.viewPrintFormatter startingAtPageAtIndex:0];
  74. //increase these values according to your requirement
  75. float topPadding = 10.0f;
  76. float bottomPadding = 10.0f;
  77. float leftPadding = 10.0f;
  78. float rightPadding = 10.0f;
  79. CGRect printableRect = CGRectMake(leftPadding,
  80. topPadding,
  81. kPaperSizeA4.width-leftPadding-rightPadding,
  82. kPaperSizeA4.height-topPadding-bottomPadding);
  83. CGRect paperRect = CGRectMake(0, 0, kPaperSizeA4.width, kPaperSizeA4.height);
  84. [render setValue:[NSValue valueWithCGRect:paperRect] forKey:@"paperRect"];
  85. [render setValue:[NSValue valueWithCGRect:printableRect] forKey:@"printableRect"];
  86. NSData *pdfData = [render printToPDF];
  87. if (pdfData) {
  88. [pdfData writeToFile:[NSString stringWithFormat:@"%@/tmp.pdf",NSTemporaryDirectory()] atomically: YES];
  89. }
  90. else
  91. {
  92. NSLog(@"PDF couldnot be created");
  93. }
  94. }
  95.  
  96. -(void)createPDFfromUIView:(UIView*)aView saveToDocumentsWithFileName:(NSString*)aFilename
  97. {
  98. // Creates a mutable data object for updating with binary data, like a byte array
  99. UIWebView *webView = (UIWebView*)aView;
  100. NSString *heightStr = [webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollHeight;"];
  101.  
  102. int height = [heightStr intValue];
  103. // CGRect screenRect = [[UIScreen mainScreen] bounds];
  104. // CGFloat screenHeight = (self.contentWebView.hidden)?screenRect.size.width:screenRect.size.height;
  105. CGFloat screenHeight = webView.bounds.size.height;
  106. int pages = ceil(height / screenHeight);
  107.  
  108. NSMutableData *pdfData = [NSMutableData data];
  109. UIGraphicsBeginPDFContextToData(pdfData, webView.bounds, nil);
  110. CGRect frame = [webView frame];
  111. for (int i = 0; i < pages; i++) {
  112. // Check to screenHeight if page draws more than the height of the UIWebView
  113. if ((i+1) * screenHeight > height) {
  114. CGRect f = [webView frame];
  115. f.size.height -= (((i+1) * screenHeight) - height);
  116. [webView setFrame: f];
  117. }
  118.  
  119. UIGraphicsBeginPDFPage();
  120. CGContextRef currentContext = UIGraphicsGetCurrentContext();
  121. // CGContextTranslateCTM(currentContext, 72, 72); // Translate for 1" margins
  122.  
  123. [[[webView subviews] lastObject] setContentOffset:CGPointMake(0, screenHeight * i) animated:NO];
  124. [webView.layer renderInContext:currentContext];
  125. }
  126.  
  127. UIGraphicsEndPDFContext();
  128. // Retrieves the document directories from the iOS device
  129. NSArray* documentDirectories = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES);
  130.  
  131. NSString* documentDirectory = [documentDirectories objectAtIndex:0];
  132. NSString* documentDirectoryFilename = [documentDirectory stringByAppendingPathComponent:aFilename];
  133.  
  134. // instructs the mutable data object to write its context to a file on disk
  135. [pdfData writeToFile:documentDirectoryFilename atomically:YES];
  136. [webView setFrame:frame];
  137. }
  138.  
  139. func webViewDidFinishLoad(webView: UIWebView) {
  140. let pdfData = createPdfFile(webView.viewPrintFormatter())
  141. pdfData.writeToFile("/path/to/file", atomically: true)
  142. }
  143.  
  144. func createPdfFile(printFormatter: UIViewPrintFormatter) -> NSData {
  145. let renderer = UIPrintPageRenderer()
  146. renderer.addPrintFormatter(printFormatter, startingAtPageAtIndex: 0);
  147. let paperSize = CGSizeMake(self.view.frame.size.width, self.view.frame.size.height)
  148. let printableRect = CGRectMake(0, 0, paperSize.width, paperSize.height)
  149. let paperRect = CGRectMake(0, 0, paperSize.width, paperSize.height);
  150. renderer.setValue(NSValue(CGRect: paperRect), forKey: "paperRect")
  151. renderer.setValue(NSValue(CGRect: printableRect), forKey: "printableRect")
  152. return renderer.printToPDF()
  153. }
  154.  
  155. extension UIPrintPageRenderer {
  156. func printToPDF() -> NSData {
  157. let pdfData = NSMutableData()
  158. UIGraphicsBeginPDFContextToData(pdfData, self.paperRect, nil)
  159. self.prepareForDrawingPages(NSMakeRange(0, self.numberOfPages()))
  160. let bounds = UIGraphicsGetPDFContextBounds()
  161. for i in 0..<self.numberOfPages() {
  162. UIGraphicsBeginPDFPage();
  163. self.drawPageAtIndex(i, inRect: bounds)
  164. }
  165. UIGraphicsEndPDFContext();
  166. return pdfData;
  167. }
  168. }
  169.  
  170. func webViewDidFinishLoad(_ webView: UIWebView) {
  171. let pdfData = createPdfFile(printFormatter: webView.viewPrintFormatter())
  172. pdfData.write(toFile: "/path/to/file", atomically: true)
  173. }
  174.  
  175. func createPdfFile(printFormatter: UIViewPrintFormatter) -> NSData {
  176. let renderer = UIPrintPageRenderer()
  177. renderer.addPrintFormatter(printFormatter, startingAtPageAt: 0)
  178. let point = CGPoint(x:0,y:0)
  179. let paperSize = CGSize(width: self.view.frame.size.width, height: self.view.frame.size.height)
  180. let printableRect = CGRect(origin: point, size: CGSize(width:paperSize.width, height: paperSize.height))
  181. let paperRect = CGRect(origin: point, size: CGSize(width: paperSize.width, height: paperSize.height))
  182. renderer.setValue(NSValue(cgRect: paperRect), forKey: "paperRect")
  183. renderer.setValue(NSValue(cgRect: printableRect), forKey: "printableRect")
  184. return renderer.printToPDF()
  185. }
  186.  
  187. extension UIPrintPageRenderer {
  188. func printToPDF() -> NSData {
  189. let pdfData = NSMutableData()
  190. UIGraphicsBeginPDFContextToData(pdfData, self.paperRect, nil)
  191. self.prepare(forDrawingPages: NSMakeRange(0, self.numberOfPages))
  192. let bounds = UIGraphicsGetPDFContextBounds()
  193. for i in 0..<self.numberOfPages {
  194. UIGraphicsBeginPDFPage();
  195. self.drawPage(at: i, in: bounds)
  196. }
  197. UIGraphicsEndPDFContext();
  198. return pdfData;
  199. }
  200. }
  201.  
  202. CGRect screenRect = [[UIScreen mainScreen] bounds];
  203. CGFloat screenWidth = screenRect.size.width;
  204. CGFloat screenHeight = screenRect.size.height;
  205.  
  206. extension WKWebView {
  207.  
  208. // Call this function when WKWebView finish loading
  209. func exportAsPdfFromWebView() -> String {
  210. let pdfData = createPdfFile(printFormatter: self.viewPrintFormatter())
  211. return self.saveWebViewPdf(data: pdfData)
  212. }
  213.  
  214. func createPdfFile(printFormatter: UIViewPrintFormatter) -> NSMutableData {
  215. let originalBounds = self.bounds
  216. self.bounds = CGRect(x: originalBounds.origin.x,
  217. y: bounds.origin.y,
  218. width: self.bounds.size.width,
  219. height: self.scrollView.contentSize.height)
  220. let pdfPageFrame = CGRect(x: 0, y: 0, width: self.bounds.size.width,
  221. height: self.scrollView.contentSize.height)
  222. let printPageRenderer = UIPrintPageRenderer()
  223. printPageRenderer.addPrintFormatter(printFormatter, startingAtPageAt: 0)
  224. printPageRenderer.setValue(NSValue(cgRect: UIScreen.main.bounds), forKey: "paperRect")
  225. printPageRenderer.setValue(NSValue(cgRect: pdfPageFrame), forKey: "printableRect")
  226. self.bounds = originalBounds
  227. return printPageRenderer.generatePdfData()
  228. }
  229.  
  230. // Save pdf file in document directory
  231. func saveWebViewPdf(data: NSMutableData) -> String {
  232.  
  233. let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
  234. let docDirectoryPath = paths[0]
  235. let pdfPath = docDirectoryPath.appendingPathComponent("webViewPdf.pdf")
  236. if data.write(to: pdfPath, atomically: true) {
  237. return pdfPath.path
  238. } else {
  239. return ""
  240. }
  241. }
  242. }
  243. extension UIPrintPageRenderer {
  244.  
  245. func generatePdfData() -> NSMutableData {
  246. let pdfData = NSMutableData()
  247. UIGraphicsBeginPDFContextToData(pdfData, self.paperRect, nil)
  248. self.prepare(forDrawingPages: NSMakeRange(0, self.numberOfPages))
  249. let printRect = UIGraphicsGetPDFContextBounds()
  250. for pdfPage in 0..<self.numberOfPages {
  251. UIGraphicsBeginPDFPage()
  252. self.drawPage(at: pdfPage, in: printRect)
  253. }
  254. UIGraphicsEndPDFContext();
  255. return pdfData
  256. }
  257. }
Add Comment
Please, Sign In to add comment
Public Pastes
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy.  OK, I Understand
Not a member of Pastebin yet?
Sign Up, it unlocks many cool features!