Friendlydeveloper.com

Dear friendlydeveloper:

Thanks for your sharing. Can i try to generate a new pdf from original pdf (It’s like copy) through your solution?

Mr.Er

Hi, friendlydeveloper,

Actually, i try to generate PDF files and try to insert image to one page of pdf. But now, i use Quartz to generate PDF files, can copy one by one successfully, but the big problem is that displays white or garbled text. (My question is the same as http://stackoverflow.com/questions/2957800 ).

This my renderer code, reference it.
http://stackoverflow.com/questions/3606292/iphone-create-pdf-document-from-pdf-pages/3698352#3698352

Yes, i just trying to duplicate one pdf file, but the different is that i want to insert an image into original page (just like modify pdf) and save as a newly-generated pdf file. As i know, apple SDK seem to have no provide this function.

Hi there,
Sorry,I think you misunderstand my meaning. My problem is that fonts will mess as I copy one by one not insert an image. You can trying to run my example code, and saw the results that displays white or garbled text.

Example code:
https://docs0.google.com/document/edit?id=11Xin73FYNGr1e9VDtwyFayLwbacqzKeJghEmwsuqSnQ&hl=zh_TW#

Iphone Simulator Debug Console Message:
Tue Sep 21 14:47:50 XXXXXX.local QuartzDemo[1780] : CGContextClosePath: no current point.
Tue Sep 21 14:47:50 XXXXXX.local QuartzDemo[1780] : invalid Type1 font: unable to stream font.
…

OK, Waiting for your good news

sorry we r not able write any thing in that pdf file….

Hey there, just wanted to say thanks for sharing your code. Working on multipage pdf creation on the iphone at the mo (relatively new to iphone dev), and your ideas were a huge help. Thanks again!

I have been trying to get this to work in simple application and cannot. It creates the PDF file but the file is blank. I am giving it a simple line of text and it does not work. I found several errors in this code and corrected them ,perhaps they were not errors but they gave me errors in Xcode. I commented out the password stuff for testing purposes.

Do you have any idea why my text will not go in the file.

Thanks Jerry

#define LEFT_MARGIN 25

#define RIGHT_MARGIN 25

#define TOP_MARGIN 35

#define BOTTOM_MARGIN 50

#define BOTTOM_FOOTER_MARGIN 32

#define DOC_WIDTH 595

#define DOC_HEIGHT 842

- (void)viewDidAppear:(BOOL)animated
{

[self PageLoad];

tempContentString = [[NSString alloc] init];

textArray = [[NSMutableArray alloc] init];

[self preparePDFCreation];

}
- (void)viewWillDisappear:(BOOL)animated
{

[super viewDidDisappear:animated];
}

- (void)preparePDFCreation {

NSString *fileName = @”myPDF.pdf”; //set whatever name you like

// NSString *content = myTextView.text; //this is the UITextView, containing our text.

NSString *content = @”My first PDF Document BizRatios”;

CGFloat fontSize = 20; //set your fontSize here

NSString *fontName = @”Papyrus”; //set your font name here (Helvetica, Georgia, etc…)

UIColor *myColor = [UIColor blackColor]; //set your color here (blueColor, brownColor, etc…)

NSString *password = @”test”; //set your password

//prepare saving our PDF file to documents directory

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *saveDirectory = [paths objectAtIndex:0];

NSString *saveFileName = fileName;

NSString *newFilePath = [saveDirectory stringByAppendingPathComponent:saveFileName];

NSLog(@” PDF Directory 2 %@ ” , newFilePath);
NSLog(@” PDF File name 2 %@ ” , saveFileName);

tempContentString = content; //we assign our content (text we want to draw to our PDF file)

BOOL pdfAllowCopy = YES; //allow/forbid copy

BOOL pdfAllowPrint = NO; //allow/forbid print

//important: if you forbid copy or print, you definitely need to set a password. Otherwise it won’t work!

done = NO;

[textArray removeAllObjects]; //clean the textArray

[textArray setArray:[content componentsSeparatedByString:@" "]]; //split our text into single words…we will find out why we do this in method (2)

//Now, let’s call our method (1)

NSLog(@” before call to createdPDF . %@ ” , tempContentString);

[self createPDF:newFilePath withContent:tempContentString fontSize:fontSize andFont:fontName andColor:myColor:pdfAllowCopy:pdfAllowPrint:password];

NSLog(@” PDF tempContentString after main call at end %@ ” , tempContentString);

int i;

i=1;
i=2;

}

- (void) createPDF:(NSString *)fileName withContent:(NSString *)content fontSize:(CGFloat)fontSize andFont:(NSString *)fontName andColor:(UIColor *)color:(BOOL)allowCopy:(BOOL)allowPrint:(NSString*)password {

CGContextRef pdfContext; //our pdfContext

CFStringRef path;

CFURLRef url;

CFStringRef passwordString = (CFStringRef)password;

CGRect pageRect = CGRectMake(0, 0, DOC_WIDTH, DOC_HEIGHT);

CFMutableDictionaryRef myDictionary = NULL; //the dictionary, which will later contain some important meta data, like password, etc…

const char *filename = [fileName UTF8String];

// Create a CFString from the filename we provide to this method when we call it

path = CFStringCreateWithCString (NULL, filename,

kCFStringEncodingUTF8);

// Create a CFURL using the CFString we just defined

url = CFURLCreateWithFileSystemPath (NULL, path,

kCFURLPOSIXPathStyle, 0);

// This dictionary contains extra options mostly for ‘signing’ the PDF

myDictionary = CFDictionaryCreateMutable(NULL, 0,

&kCFTypeDictionaryKeyCallBacks,

&kCFTypeDictionaryValueCallBacks);

NSLog(@” Enter CreatePDF content %@ ” , content);
NSLog(@” Enter CreatePDF path %@ ” , path);

NSString *title;

title = @” Financial “;

NSString *author;

author = @” Jerry”;

// CFDictionarySetValue(myDictionary, kCGPDFContextTitle, (CFStringRef)mainDelegate.rootViewController.writeViewController.titleTextField.text);
CFDictionarySetValue(myDictionary, kCGPDFContextTitle, (CFStringRef)title);

//CFDictionarySetValue(myDictionary, kCGPDFContextCreator, (CFStringRef)mainDelegate.rootViewController.writeViewController.authorTextField.text);
CFDictionarySetValue(myDictionary, kCGPDFContextCreator, (CFStringRef)author );

// if (![password isEqualToString:@""]) CFDictionarySetValue(myDictionary, kCGPDFContextOwnerPassword, passwordString);

// if (![password isEqualToString:@""]) CFDictionarySetValue(myDictionary, kCGPDFContextUserPassword, passwordString);

// if (!allowCopy) CFDictionarySetValue(myDictionary, kCGPDFContextAllowsCopying, kCFBooleanFalse); //kCGPDFContextAllowsCopying is set to TRUE by default

// if (!allowPrint) CFDictionarySetValue(myDictionary, kCGPDFContextAllowsPrinting, kCFBooleanFalse); //kCGPDFContextAllowsPrinting is set to TRUE by default

// Create our PDF Context with the CFURL, the CGRect we provide, and the above defined dictionary

pdfContext = CGPDFContextCreateWithURL (url, &pageRect, myDictionary);

// Cleanup our mess

CFRelease(myDictionary);

CFRelease(url);

//Now, this is a tricky part. We make use of a do – while loop in order to create as many pages as needed

do {

CGContextBeginPage (pdfContext, &pageRect); //begins a new PDF page

//create layout for our page

CGRect bounds = CGRectMake(LEFT_MARGIN,

TOP_MARGIN,

DOC_WIDTH – RIGHT_MARGIN – LEFT_MARGIN,

DOC_HEIGHT – TOP_MARGIN – BOTTOM_MARGIN);

UIGraphicsPushContext(pdfContext); //pushing the context, as explained at the beginning of this post

CGContextSaveGState(pdfContext);

CGContextTranslateCTM(pdfContext, 0, bounds.origin.y);

CGContextScaleCTM(pdfContext, 1, -1);

CGContextTranslateCTM(pdfContext, 0, -(bounds.origin.y + bounds.size.height));

// if ([tempContentString length] > 0) [[self stringToDraw drawInRect:bounds withFont:[UIFont fontWithName:fontName size:fontSize]]]; //THIS IS THE NASTY PART

//if ([tempContentString length] > 0) [self stringToDraw: (NSString *) fontName fontSize CGFloat) fontSize];

if ([tempContentString length] > 0)[[self stringToDraw: (NSString *) fontName fontSize CGFloat) fontSize] drawInRect:bounds withFont:[UIFont fontWithName:fontName size:fontSize]];

NSLog(@” return fron stringtoDraw tempContentString %@ ” , tempContentString);

// NSLog(@” return fron stringtoDraw pdfContext %@ ” , pdfContext);

CGContextRestoreGState(pdfContext);

// NSLog(@” after CGContextRestoreGState pdfContext %@ ” , pdfContext);

UIGraphicsPopContext();

CGContextEndPage (pdfContext); //ends the current page

}

while (!done);

// We are done with our context now, so we release it

CGContextRelease (pdfContext);

CFRelease(path);

}
- (NSString *)stringToDraw:(NSString *) fontName fontSize:(CGFloat)fontSize
{

CGSize tempSize;

CGSize theTextSize;

tempSize.width = DOC_WIDTH – RIGHT_MARGIN – LEFT_MARGIN; //define width of our document

tempSize.height = 10000000; //we use some unreal number, to make sure our text will definitely fit into this temporary “document”

NSLog(@” ttempSize.width %d” , tempSize.width);
NSLog(@” tempSize.height %d” , tempSize.height);

//now we take the text we want to draw and use the method described in (3) to fit it on our temporary document

theTextSize = [tempContentString sizeWithFont: [UIFont fontWithName:fontName size:fontSize] constrainedToSize: tempSize];

// CGSize size = [/text] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];

//Depending on length of the text, it will fit on a single page or not.

NSLog(@” fontName %@ ” , fontName);
NSLog(@” fontSize %f ” , fontSize);
NSLog(@” theTextSize.height 2 %d” , theTextSize.height);
NSLog(@” theTextSize.height 2 %f” , theTextSize.height);
NSLog(@” theTextSize.height 2 %@” , theTextSize.height);

NSLog(@” DOC_HEIGHT – TOP_MARGIN – BOTTOM_MARGIN %d ” , DOC_HEIGHT – TOP_MARGIN – BOTTOM_MARGIN);

if (theTextSize.height > DOC_HEIGHT – TOP_MARGIN – BOTTOM_MARGIN) { //the text we want to draw DOES NOT fit on a single page

BOOL pageFilled = NO;

int wordCount = 0;

float currentHeight = 0.0f;

float previousHeight = 0.0f;

NSString *returnString = [[[NSString alloc] init]autorelease];

NSString *tempReturnString = [[[NSString alloc] init]autorelease];

//Now, the following is a bit messy. However, it works

do { //repeat this loop, till our page is filled with words…

if ([textArray count] > wordCount + 1) { //if there are more words inside our textArray than the current word count + 1

returnString = (wordCount > 0) ? [returnString stringByAppendingString:[NSString stringWithFormat:@" %@", [textArray objectAtIndex:wordCount]]] : [NSString stringWithFormat:@"%@", [textArray objectAtIndex:wordCount]];

theTextSize = [returnString sizeWithFont: [UIFont fontWithName:fontName size:fontSize] constrainedToSize: CGSizeMake(DOC_WIDTH – RIGHT_MARGIN – LEFT_MARGIN, DOC_HEIGHT – TOP_MARGIN – BOTTOM_MARGIN)];

currentHeight = theTextSize.height;

if (theTextSize.height >= DOC_HEIGHT – TOP_MARGIN – BOTTOM_MARGIN) {

pageFilled = YES; // our page is now filled with words

}

if (currentHeight == previousHeight && currentHeight > 700.0f) { //this is a workaround. sometimes the above if statement fails and does not correctly detect a filled page. i noticed, that it happens most of the time, when using large fonts, like zapfino. so, what we do here, is simply check, if the height of our text stays the same when comparing two loops – hence “currentHeight” and “previousHeight”. if that’s the case and our text height is greater than 700 (look at if statement), we have a filled page.

pageFilled = YES; //page is now filled with words

wordCount –; //we subtract one word from our wordCount, because the filled page has not been correctly detected above

returnString = tempReturnString;

}

wordCount ++; //increase the wordCount

}

else {

pageFilled = YES; //we now have a correctly filled page

}

previousHeight = theTextSize.height; //set previousHeight, so we can compare it when running our next loop

tempReturnString = returnString;

}

while (!pageFilled); //repeat this loop until pageFilled = YES

for (int i = 0; i < wordCount; i++) { //remove all words, we put on our page from our textArray

[textArray removeObjectAtIndex:0];

}

if ([textArray count]) { //if there are words in our textArray

tempContentString = [textArray componentsJoinedByString:@" "]; //update our content string

}

else {

tempContentString = @"";

NSLog(@" PDF tempContentString null %@ " , tempContentString);

done = YES;

}

if ([returnString length] == 0) returnString = @" ";

NSLog(@" PDF tempContentString null %@ " , tempContentString);

return returnString;

}

else {

done = YES;

NSLog(@" PDF tempContentString yes ok %@ " , tempContentString);

return tempContentString;

}

NSLog(@" PDF tempContentString yes ok %@ " , tempContentString);
return tempContentString;

}

I also had errors in XCode and fixed them. It creates the PDF file but it is blank… any help is greatly appreciated.

hey thanks for this tutorial.i have one problem in this.this code is working fine for ipad but not for iphone.for iphone it create only one page.please help me with this. thanks