Re: CGImage to NSImage, or PDFPage?
On Aug 11, 2010, at 5:27 PM, Brian Postow wrote: > Is there any way to get access to the xObjects in the PDFPage, other than > parsing through the PDF data? Unfortunately, no. Hackish as it may be, perhaps you can store the original image resolution/size as metadata in the PDF. All this back and forth between bitmap formats and PDF-as-container format though has me wondering if there isn't a better way. I don't know what you're trying to accomplish though so perhaps you have the optimal solution. John Calhoun— ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: CGImage to NSImage, or PDFPage?
On Aug 10, 2010, at 2:45 PM, Brian Postow wrote: > I have a CGImageRef, and I need to put it into a PDFPage. At the moment, the > only way I see to do that is to turn it into an NSImage first. That will work, but it is also possible to subclass PDFPage and override the -[drawWithBox:] method in your subclass. Your method would get the current context as a CGContext and draw the CGImageRef directly. Make sure to return the correct size in -[PDFPage boundsForBox:] as well. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: PDFSelection question
On Jun 5, 2010, at 12:26 PM, Matthew Weinstein wrote: > I think I must be missing some simple method in the api to do this, but, > given a range of a PDFDocument string, how do I convert that to a selection? > I found the PDFPage selection from range, but how do I find what pages a > selection for the document string covers? I may not understand your question PDFDocument's don't really contain a string for the entire document — it is created by concatenating the strings from each page (with a between them. Generally, the API uses PDFSelections — for example if the user selects text in the PDFView -[PDFView currentSelection] returns that as a PDFSelection. If you search a PDFDocument the results returned are PDFSelections. Using PDFSelections allows you to query the pages covered by the selection (-[PDFSelection pages]). Perhaps there is something else you are attempting to do though. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: PDFKit cpSelections?
On May 26, 2010, at 1:13 PM, Matthew Weinstein wrote: > Now even before I can click on it, while it is loading from nib it bombs with > the following pearls of wisdom. I can't find a discussion of cpSelections > anywhere. cpSelection objects are internal - used by PDFSelection beginning with SnowLeopard. -[PDFView becomeFirstResponder:] is calling -[PDFView(PDFViewInternal) invalidateSelectionBounds:] on the current selection. This would have the effect of forcing a redraw of the view region covered by the selection (if any). When a view becomes first responder the selection is drawn with a different color than when the focus is elsewhere I offer this just as an explanation for what is happening — I can't say why you are seeing doesNotRecognizeSelector or referecnes to cpSelection. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: initializing a pdfview
On May 26, 2010, at 11:38 AM, Matthew Weinstein wrote: > I think I'm on the verge of success with my attempt to create a selection > rectangle (that doesn't select text) for pdfview, but I'm unclear what init > routines I should use in my pdfview subclass. - > (id)initWithFrame:(NSRect)frameRect doesn't seem to get called--as it does in > nsview. Are you loading the PDFView subclass from a NIB or creating it programmatically? From the NIB I believe -(id) initWithCoder: (NSCoder *) coder is called. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Creating a PDFSelection...
On May 25, 2010, at 9:37 PM, Matthew Weinstein wrote: > Actually, I don't need the tiff; I just need the rectangle! People have to be > able to sketch the rectangle over the pdf, and then my program stores and > restores those rectangles (with some additional information). PDFSelection has a routine to return each line from the selection as a sub-selection (for a single word selection this generally is just the selection itself, but for selections that span multiple lines you get a new selection for each line). For each "line selection" you can get its bounds. These you can store/archive along with the page index. With the archived rectangles and page indices you can later create selections again from those rectangles (PDFPage has -[selectionForRect:]). This isn't a perfect solution though — you may have to pad out the rectangle a bit for example to improve fidelity between the original selection and the unarchived one. If you know the range of the original text selected, PDFPage's -[selectionForRange:] is unambiguously specified. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: PDF View - smooth text?
On Jan 27, 2010, at 2:01 AM, Keith Blount wrote: > In Preview app's preferences, under the "PDF" pane, there is a checkbox > entitled "Smooth text and line art". Does anyone know what setting this > corresponds to in PDFView or the PDFKit (if, indeed, any, and it isn't > something specific to Preview)? Try playing with interpolation quality in the CGContext. It may be combined with ant-ialising as well (so you may need to set both appropriately). John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How to determine if a PDFPage is image based? (A scanned page)
On Sep 13, 2009, at 5:01 AM, DairyKnight wrote: Is there a way to determine if a PDFPage contains only a picture? You could see if NULL is returned for -[PDFPage string]. That sort of indirectly implies an image (or a blank page — or one perhaps with line art only ...). John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Anti-aliasing in Snow Leopard (10.6) PDFView
On Sep 7, 2009, at 3:50 PM, Duncan McGregor wrote: It used to be that PDFView anti-aliased nicely. Now it doesn't, at least not for some files. Text and scans rendered in both the PDKKitViewer and PDFLinker2 samples are horrible in 10.6. Can you point to a specific PDF that shows this behavior? John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSPDFImageRep Memory Leak?
On Sep 8, 2009, at 5:08 AM, DairyKnight wrote: NSPDFImageRep *pdfImgRep = [[NSPDFImageRep alloc] initWithData:[page dataRepresentation]]; Check [page dataRepresentation] above. Pre-SnowLeopard the NSData returned was not autoreleased and so needed to be released by the caller. This was not consistent with other AppKit -[xxx dataRepresentation] calls. In SnowLeopard, -[PDDPage dataRepresentation] is properly auto- released. SnowLeopard PDF Kit though checks the compiler and continues the non-auto-prelease behavior for apps compiled before SnowLeopard. The above applies to -[PDFDocument dataRepresentation] as well. Check the PDFXxx headers, the behavior change is documented there. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Performance Issue with Drawing PDFPages on NSView
On Aug 26, 2009, at 4:20 AM, Naresh Kongara wrote: I'm drawing the pages from the pdf document onto an NSVIew. The fallowing method draws all the pages from the document in a View, this method will be called from the view's drawrect. Its taking much time when there are more than 40 pages as all the pages needs to be displayed at a time . Is there any other way of doing it ? or How can increase the performance..? Don't go from PDFPage -> data -> NSImage. PDFPage has -[PDFPage drawWithBox:] method. Call that directly. It always draws at 100% though so you will have to set up a transform within [NSView drawRect:] in order to scale/position the page correctly. That should make a significant performance difference John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Memory efficient way to get image metadata?
On Aug 3, 2009, at 1:23 PM, kentoz...@comcast.net wrote: Is there some way (other than rolling my own image readers) to just get the metadata from a file rather than having to load the entire thing? A third party class that would be something like "NSImageInfo" (if Apple had written such a class) Look into ImageIO on the OS. It is not a Cocoa class library but rather a C-level framework. You can get the properties from an image probably a good deal more efficiently than via NSImage. And you could easily wrap it all in your own "ImageInfo" Objective-C class if you want. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: adding PDF annotations to the output of a regular NSView
On Jul 29, 2009, at 4:44 PM, Martin Wierschin wrote: So the problem is that there doesn't seem to be any way of marrying these two systems together. Ideally there would be some Cocoa method I could call in my NSView's drawRect method to add PDF annotations. But the only solution I see is something like this: 1. Produce raw PDF data from my normal NSView hierarchy. 2. Load that NSView data into a PDFView. 3. Add PDFAnnotations to special regions as desired. 4. Resave the modified PDF data from the PDFView. I'll start by pointing out that Step 2 is not necessary. Adding annotations in PDF Kit is done at the PDFDocument level. The PDFDocument you will have created from your raw PDF data (from Step 1). The PDFView is strictly for display purposes. As well then Step 4 more accurately would be "re-save the modified PDFDocument as PDF data." This seems very inefficient and error prone (eg: mapping coordinates between NSView and PDF page space). Is this really the best option available? Mapping points from NSView to page space is not an issue. Since the PDF data came from your NSView to begin with you can use the same coordinates you used in the NSView. So for example if the special region was of some bounds (NSRect) in the NSView you can use this same rect to create your PDFAnnotation and add it in PDF Kit. But if you wanted a more straightforward model (and I understand that NSView->PDF data->PDFDocument is a bit of a kludge) you could replace your NSView with a subclass of PDFPage and display with a PDFView. It depends on your application though ... how much of a kludge this approach would be (you could simply be trading one kludge for another :-)). But in essence to do this a PDFView replaces the NSView and rather than overriding -[drawRect] as you might for NSView, you create a PDFPage subclass of your own and override the page's -[drawWithBox:] method as the place to draw your own content. You add your page to an empty PDFDocument and display this document in the PDFView. To be clear above, the PDFPage is not a view classes but does have a draw method that is called by PDFView to display the page content. For a PDF you find laying around, the default implementation of PDFPage is to call upon the PDF data to render the specified page. Your subclass allows you to draw whatever you like. The advantage to the above approach is that you can in fact add the PDFAnnotation prior to saving and have it actually function within your application (since PDFView will handle the mouseDown in the annotation). And then as well you get zoom controls and all that with the PDFView class But as I say, it sort of depends on your app. If your app is an appoinment calendar then writing it to live within a PDFView is a bit of a stretch. :-) John Calhoun— ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: trimbox and bleedbox from PDF
On Jun 11, 2009, at 2:55 PM, gMail.com wrote: I would need to get the trimbox rect and bleedbox rect from a pdf document. Is anyone who can point me to the right APIs and procedures? Thanks. You want to create either a PDFDocument (part of PDF Kit .. Cocoa) or a CGPDFDocumentRef (CoreGraphics ... straight C). From there get either a PDFPage (PDF Kit) or CGPDFPageRef (CoreGraphics) — both have methods/functions then to get the trim and bleed boxen. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: PDFView in layer backed view appears white
On Apr 6, 2009, at 6:31 AM, Memo Akten wrote: Hi, I would like to add a PDFView to another view. But if my root view is layer backed I see nothing (just white). The PDFView contains a subview. You can get to it via: -[PDFView documentView]. Perhaps retain this subview, remove from super, and add the subview to a layer backed view. I can think of a number of ways this may fail though (haven't tried it), so don't get your hopes up. If you simply want to display a single page though, just create your own NSView subclass and call PDFPage's draw method in your views drawRect method. You can set the needed scale on the current graphics context to have the PDFPage draw at the correct size. Also, don't forget to erase to white before calling PDFPage's draw. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Saving a PDF Selection or converting it to an NSRange and back
On Feb 11, 2009, at 12:44 PM, Keith Blount wrote: The subject line says it all, really, I need to save a PDFSelection between sessions in my program, but there seems no way of doing this. A similar question came up on these last year but there was no solution: To save a selection sapnning multiple pages you could convert a single selection into an array of single-line selections (-[PDFSelection selectionsByLine]). Each selection returned by this method is going to be on a single page (and a single contiguous range and line). The bounds then of these selections can be saved and then the selections recreated from those bounds. I haven't tried the above but it should work in principle. PDFSelection should probably expose some method of archiving in the future Of course, if there is a better way of implementing PDF highlighting that I'm missing, please feel free to tell me point me in the direction of what I have overlooked. I have looked at the docs, the samples and searched the net before posting, though. No better, but different: you could take the bounds returned from the above discussion and instead create Highlight annotations. These you can add to the PDF and save out. Might save you some work since when re-opening the PDF you don't need to re-create the highlights since they're now embedded in the PDF. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: -[PDFView drawPage:] and Printing
On Feb 9, 2009, at 8:51 PM, Kyle Sluder wrote: Okay, so at this point I guess I need to establish just what's going on. Does PDFView refer to a view containing the enclosing scroll view, or perhaps the scroll view itself? For better or worse, the PDFView is the enclosing view ... but as you describe there is a nested scrollview and deeper still the document view. When the document view gets a -[drawRect:] call it determines the visible pages (based on the PDFView display layout, and position of the scroller, zoom, etc.) and then calls PDFView's -[drawPage:] for each visible page. -[PDFView drawPage:] was put in PDFView as a convenience so it can be overriden in a subclass of PDFView. The default implementation of this method calls -[PDFPage drawWithBox:] for the page in question. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: -[PDFView drawPage:] and Printing
On Feb 9, 2009, at 1:28 PM, Kyle Sluder wrote: I'm overriding -drawPage: in a PDFView subclass with the intent of layering two PDFs on top of each other. It works great on screen, but when I attempt to print the document, PDFKit just prints the document PDFView rather than using my -drawPage: method. That is true. The PDFPage draw method is instead what is being called (in fact it is called both via printing and by the PDFView itself in order to display the PDF). So, there's the first clue try to subclass the PDFDocument/ PDFPage instead and override the -[PDFPage drawWithBox:] method to composite your two PDF's. This will in fact kill two birds with one stone. And in fact a third bird ... saving the PDF will save the composited PDF as well. :-) John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: PDFView printing subviews
On Jan 21, 2009, at 2:03 AM, Martin F. Carianni wrote: Now, this prints the PDFVIEW without the subview, prints just the model from the PDFDocument. As you observe, calling the print method in PDFView renders the PDF document ... not the PDFView content. If the PDF is a single page you can get the -[PDFView documentView] and print just that (using NSView methods not PDFKit). Otherwise it gets trickier than that One alternative might be to subclass the PDFView and override the - [drawPage:] method and, during the print, draw your subviews by hand for each page. It seems doable to me, just unfortunately more complicated than you would like. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Tabbing PDF Annotation Editor between annotations in "edit mode"?
On Nov 14, 2008, at 12:18 PM, Joel Norvell wrote: I want to modify the PDF Annotation Editor so that it will tab from annotation-to-annotation in "edit mode," just like it does in "test mode." : And since PDFAnnotation isn't an NSView subclass, I'll have to create a mechanism that "hears" tab events and then updates the current annotation "by hand." My first thought would be to go a different route ... grab keyDown's in your PDFView subclass and keep track of the current annotation with "focus". Manually advance the focus by going round-robin threough the annotaions on the page. If you can do something more sophisticated though, go for it. :-) John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Saving an annotated PDF to a flat image
On Sep 26, 2008, at 5:55 AM, Danny Greg wrote: I load a document from disk, get it's first page (they are all 1 page docs), add the annotations by calling addAnnotation: and then save out the document. Am I missing a stage? No, that sounds right — assuming you are saving the PDF document by calling PDFDocument's writeToFile/URL methods. Can you share some swatch of code? John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Saving an annotated PDF to a flat image
On Sep 25, 2008, at 3:24 AM, Danny Greg wrote: Just to up the anti, what do I need to do to save the annotations to a proper PDF, (ie keeping all its text, link properties etc). I tried to save off the page's data representation but no matter what I do it never contains any annotations! Again, I need to accomplish this without opening the PDF up in a PDFView. Okay, I'll ante up. :-) PDFDocument has methods for saving PDF's – since Leopard, annotations are preserved as annotations. PDFPage has methods for adding, removing annotations. The PDFAnnotation classes ave initializers so that annotations can be created. PDFView is really just a view. While it has a lot of convenience methods to aid in PDF viewing, the real functionailty of PDF Kit is in the other classes. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Saving an annotated PDF to a flat image
On Sep 23, 2008, at 4:11 AM, Danny Greg wrote: I am trying to save a PDF annotated using subclasses of PDFAnnotation to an image (such as a png, jpg etc) or a PDF such that the annotations are displayed. So the resulting image should be annotated. Not too much code. Get the size of said page (-[PDFPage boundsForBox:]) and create an NSImage of this size (-[[NSImage alloc] initWithSize:]). Lock the image (-[NSImage lockFocus]) and then call PDFPage;s draw method (- [PDFPage drawWithBox:]). Unlock focus on the NSImage and you;re done. This is off the top of my head so I haven't tested the code. Oh, you may need to throw in a -[PDFPage transformContextForBox:] so it works with PDF's with rotated pages, etc. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: How do I create a PDF fle paginated according to my own rules?
On Aug 28, 2008, at 5:51 PM, Paul Archibald wrote: But this does not seem to be possible. The PDFDocument and PDFPage classes seem to have a weird relationship, where you can get a page from a document, or add/remove a page, but there does not seem to be any way to create a PDFPage and draw or set text into it directly. You can by subclassing. 1) Create a class: MyPDFTextPage (or whatever) as a subclass of PDFPage. 2) Implement/override -[PDFPage boundsForBox:] and return the size you want for your PDF page (in points). 3) Implement/override -[PDFPage drawWithBox:] to draw whatever text you wish, in whatever color, font or point size you wish. 4) Add this page to an empty PDFDocument. So there are some things I left out above. For example, your subclass will need a settor or initializer to specify the text/font/etc. And of course instance variables to store this info. This will work. And it will be fast as well. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: How do you create a new PDF file and write text to it?
On Aug 6, 2008, at 11:37 AM, Paul Archibald wrote: It looks like PDFKit is aimed at simply reading and navigating within an existing PDF file, but what I need to do is create a new PDF and write some simple text to it. Sorry, I had to jump in and refute that — PDF Kit does allow PDF content creation, but it may not be so obvious looking at the API. Subclassing PDFPage is a way to do this. Subclass and implement - [boundsForBox:] and -[drawWithBox:] and you're there. You report back the size of the PDF page in -[boundsForBox:] (in points where 72 == 1 inch) and you draw your text in the -[drawWithBox:] method. You create an empty PDFDocument (alloc, init) and add your subclassed PDFPage to the document. On Aug 6, 2008, at 11:42 AM, Charles Steinman wrote: Easiest way: Create a view that draws what you want, send it - dataWithPDFInsideRect: and write that data to a file. Charles is correct. And it is easiest. The PDF Kit method I outlined above gives you slightly more control over the resulting PDF (you can for example add metadata, multiple pages, differing crop/media boxes, etc.). John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: [PDFDocument documentRef] internal method questions.
On Jul 14, 2008, at 9:04 AM, Kevin Ross wrote: In my subclassing PDFDocument adventures I wanted to add a method to my subclass like so: - (CGPDFDocumentRef)documentRef; I realized that it was overriding an internal PDFDocument method that I was unaware of. This actually helps a big performance bottleneck in the application because I can use it instead of creating my own docRef from scratch each time. What I'm not sure about though is how safe I am using this in my application since it might break on future OS updates. I'm planning on filing an enhancement request since it is useful to be able to get a CGPDFDocumentRef directly from a PDFDocument object. How safe am I using this method in my application? Hmmm Best of course to check for the symbol and have a fallback (presuably though a slower fallback method). But I believe you'll find the symbol you found exists back to Tiger and may be made public in SnowLeopard. It is something PDF Kit could benefit from — I just need to make sure the headers don't break (since we'd be declaring a CoreGraphics type in essentially a Cocoa-universe header). So, be safe, but stay tuned. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: PDFKit guidance
On Jun 24, 2008, at 7:15 AM, Adam R. Maxwell wrote: On Jun 23, 2008, at 3:01 PM, John Calhoun wrote: You can then either apply it to a context (in your PDFPage subclass) with: - (BOOL) applyToContext:(CGContextRef) aContext; Or better still, pass it in the options dictionary to one of PDFDocument's save routines (key == @"QuartzFilter"): Should I file a bug asking for that key to be documented also? And can that option be used when creating a CGPDFContext? I'm sure I'll think of more questions :). Since the OP was trying to stay in memory, I was avoiding the save routines. The key is "documented" in PDFDocument.h. :-) Yes, you can apply the QuartzFilter to a CGPDFContext with the - [applyToContext:] call listed above. And, yes, they should better document QuartzFilters ... they're nice. I'm feeling dumb now, but I don't see how that helps? You can insert a subclassed PDFPage in an empty PDFDocument, but then what do you do to use it with your PDF file? Well, in a very crude fashion you can still accomplish what it is I think you;re trying to accomplish. You're subclassed PDFPage's could, on Tiger, render a regular PDFPage. It's gross but what I'm describing is basically having two parallel PDFDocuments — one created from a file or data ([PDFDocument initWithURL:] or [PDFDocument initWithData:]) and the other empty PDFDocument you create with - [init]. For each page in the former document you create a new PDFPageSubclass object and add it to the empty document. Your subclass does the various scaling/filtering in it's draw method and calls it's doppleganger PDFPage to render. So I said it was gross John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: PDFKit guidance
On Jun 21, 2008, at 6:34 PM, Adam R. Maxwell wrote: I appreciated Antonio's (and your) reminder :). If I understand correctly, the OP could create a PDF context with kCGPDFXDestinationOutputProfile set to a grayscale profile QuartzFilters make all that a lot simpler. You would create a QuartzFilter that does grayscale (look at ColorSync Utility for examples and how to create them). The load the QuartzFilter with: + (QuartzFilter*) quartzFilterWithURL:(NSURL*) aURL; You can then either apply it to a context (in your PDFPage subclass) with: - (BOOL) applyToContext:(CGContextRef) aContext; Or better still, pass it in the options dictionary to one of PDFDocument's save routines (key == @"QuartzFilter"): - (BOOL) writeToFile: (NSString *) path withOptions: (NSDictionary *) options; Subclassing PDFPage apparently requires 10.5, also, unless I'm missing something. Not strictly speaking. You can subclass PDFPage in 10.4 but you will not be able to get PDFDocument to create instances of your subclass when handed a PDF file (i.e. through -[PDFDocument initWithURL:]). You can however still create an empty PDFDocument on 10.4 and - insertPage your subclassed PDFPage. QuartzFilters though were only introduced in 10.5 John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: PDFKit guidance
On Jun 20, 2008, at 5:21 AM, Adam R. Maxwell wrote: If you want to draw in memory, I think you have to drop down to Quartz; using PDFKit would likely be easier, but it looks like you can only specify a Quartz filter when saving to a file?. I think there may be some confusion with regards to drawing Antonio is correct that PDFPage has a -[drawWithBox:] method that is used not simply for displaying to screen but also for rendering into a PDF context for saving to file as well. So, you can still use PDFPage, override -[drawWithBox:] in an app that has no intention of displaying the PDF to screen. The saving method is in PDFDocument. When called it walks through each PDFPage in the document and calls it to render into a PDF context. (Printing within PDF Kit does something similar, BTW.) Optionally too, you can pass a QuartzFilter to the save method in PDFDocument and get, for example, grayscale output. You can also do something similar in Quartz with CGPDFDocumentRefs and CGPDFPageRefs. The QuartzFilter stuff should work for CGContexts as well. There is I think a perception that PDF Kit is only for displaying PDF's and I like to try to dispell that when I can. :-) John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: PDFKit guidance
On Jun 19, 2008, at 4:35 PM, Torsten Curdt wrote: I would like to convert a PDF of any size so it fits to A4/Letter. I would also like to reduce it to gray scale. This all without displaying anything. PDFKit gives you -[PDFPage setBounds:forBox] which would easily give you A4/Letter size if that is what you specified. However, no scaling is done. A PDFPage subclass could be fairly easily written that would do the scaling though Look at QuartzFilters (in Quartz.framework) — this is where you can create a filter for converting to greyscale. PDFDocument allows you to pass in a QuartzFilter in the save methods (in the options dictionary) if you want to apply this Quartz Filter on saving. So, PDF Kit can I think do what you want. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: PDFDocuments and CGPDFDocuments
On May 31, 2008, at 3:43 PM, Kevin Ross wrote: My ultimate goal is an application that is like a printer's PDF workflow, that will allow page manipulations like resizing / cropping / adding bleed information, and imposing multiple pages onto one with crop marks and the like. After researching it seems like some of the functions (imposition with crop marks, page cropping/scaling with/without preserving aspects, etc) are best suited for quartz, while the rest (page reordering/inserting, rotating, etc) have Cocoa APIs. Well, FWIW, Apple's Preview is cropping in PDF Kit ... basically you call -[setBoundsForBox:] on the PDFPage in question. Additionally you should probably look into subclassing PDFPage. Within that domain you can overlay crop marks, apply additional transforms, etc. See PDFCalendar sample code for a PDFPage subclassing example. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: PDFDocuments and CGPDFDocuments
On May 29, 2008, at 6:50 PM, Kevin Ross wrote: I think there has to be either a better way of doing this or a way to do it where I will not have to convert (PDFDocument *) to CGPDFDocumentRef every time I perform a transformation. Joel was right. I think it would be easier for you to stay in PDF Kit (PDFView) and do your transforms there. Since I don't know exactly what you are doing, I can't recommend specific advice. If you explain what you think you need to do with CGPDFDocumentRef, I'll try to suggest a parallel way of doing it in PDF Kit. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: PDFPage Creation query
On May 23, 2008, at 1:43 AM, Amrit Majumdar wrote: There are a couple of other queries I have. 1. How to display the thumbnails in a PDFThumbnailView without their corresponding labels ? There is no API - labels are always on. ImageKit has an image browser view that is analogous to the PDFTHumbnailView but gives you a lot more flexibility. You might want to investigate that. 2. On double clicking on a PDFPage in an document I want to change the color of the page,eg. I don't follow. Change the color of the background content of the main PDFView page? Or the thumbnail only? Both? John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: PDFPage Creation query
On May 22, 2008, at 1:20 AM, Amrit Majumdar wrote: I was planning to create a new PDFDocument, with my own PDF Page that I generate after subclassing PDFPage Accordingly I subclassed PDFPage and have over-riden the following menthods. - (id)initWithImage:(NSImage *)image; Antonio is correct. In short, instead override the draw and bounds method in yor own subclass. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Storing PDF selection
On May 15, 2008, at 11:43 PM, Laurent Cerveau wrote: If I have a PDF View , select part of it and get the currentSelection, showing it tells something like Page index = 2, Range = (0, 21] However I do not see where I could get the range of the PDFSelection and later recreate a selection with this value Not the range, but you can get the bounds for each page the selection covers: -[PDFSelection boundsForPage: (PDFPage *) page]. To "unflatten" you can call [PDFPage selectionForRect:] for each partial selection you saved off. Selections can be added then [PDFSelection addSelection: (PDFSelection *) selection]. Yeah, a little hacky.... John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Query with PDF Page display in PDFview
On May 15, 2008, at 3:07 AM, Amrit Majumdar wrote: With the PDFView we can display upto two pages in a row. I need to display more than two PDF pages in a row. An earlier post pointed me to the fact that the PDFThumbnailView can be used for the same. But the catch is PDFThumbnailView doesn't help me acheive all my requirements. What are your requirements? You may, I think, have to write your own PDFView. This is not as hard as it seems though (depending on how much functionailty you want). PDFVew itself is just using the other classes in PDF Kit (like PDFPage for rendering, PDFSelection for selecting text, etc.). John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Threading - How its done?
On May 6, 2008, at 4:51 PM, Karl von Moller wrote: Does anyone know whether there is a way to get progress info from a PDF loading into a view - percentage/bytes loaded for example? No, I can think of no way to do this. Be careful with threading and PDF... PDFKit classes are ultimately based on CFPDFDocumentRef and CGPDFPageRef — these are not thread safe. You cannot for example search for text in a PDFDocument while rendering a PDFPage from that same PDFDocument. Or even render two different PDFPages from the PDFDocument. You can however have several CGPDFDocumwentRefs that point to the same underlying file/data working on separate threads. You want separate PDFDocument objects though: PDFDocument *mainPDFDocument = [[PDFDocument alloc] initWithUR: someURL]; PDFDocument *threadPDFDocument = [[PDFDocument alloc] initWithUR: someURL]; Note, same URL, different PDFDocument instance. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Threading - How its done?
On May 5, 2008, at 7:17 PM, Karl von Moller wrote:
-(void)openPDFandCreatePreview:(id)sender
{
//[progressOutlet setUsesThreadedAnimation:YES];
NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
[progressOutlet startAnimation:nil];
NSPDFImageRep *pdfRep;
NSImage *pdfImage;
pdfRep = [NSPDFImageRep imageRepWithContentsOfFile:
finalStringOutput];
pdfImage = [[[NSImage alloc] init] autorelease];
[pdfImage addRepresentation: pdfRep];
[imageWellOutlet setImage:pdfImage];
PDFDocument *pdfDoc;
pdfDoc = [[[PDFDocument alloc] initWithURL: [NSURL fileURLWithPath:
finalStringOutput]] autorelease];
[pdfOutlet setDocument:pdfDoc];
[progressOutlet stopAnimation:nil];
[pool release];
return;
}
If there is another way to load a PDF into a PDF view using
Multithreading techniques that is easier to understand please let me
know! Any help with this would be much appreciated.
I'm not exactly following the above
Why the mix of NSImage and PDFDocument? You seem to be creating the
PDF twice (at least the first page).
Are mutliple threads trying to share a single PDFView? I know that wll
break....
John Calhoun—___
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Re: Saving/restoring PDFAnnotationTextWidget stringValues with PDFKit 10.5
On May 3, 2008, at 1:58 AM, Antonio Nunes wrote: They are not preserved. If you are saving data into your own file format you can can query the widgets at saving time and write them out explicitly. Then restore them when the file is read back in, after the PDF pages have been restored. Antonio is right. This was a bug. Hopefully I can get the fix into a software update. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Create a PDFPage instance from Quartz-format image
On Mar 3, 2008, at 3:06 PM, Scott.D.R wrote: However, I want to know whether it is possible to create the PDFPage instance directly from the CGImage, CIImage and so on? Yes. The best way to be sure is to subclass PDFPage. Your subclass should implement -[drawWithBox:] and -[boundsForBox:]. Other methods you may want to subclass are optional (an init method for example so you have a hook to set up your unique instance variables). Your bounds method needs to return the bounds for the page in points for the given box passed in (likely you can return the same bounds for all boxes). And it is in your draw method that you draw your PDF content in "page space" (that is, assume 1 pixel equals one point — you need not scale or rotate since the viewer - PDFView for example - will be applying the needed transform). Want to make your PDFPage CGImage backed? Draw the CGImage in your draw method. It's that simple. There is a sample app or two floating around somewhere that illustrate this: PDFCalendar and PDF Watermarker I believe. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Use pdfkit to display a batch of pictures...
On Feb 21, 2008, at 1:30 PM, Leopard x86 wrote: Most of us have been used to use Mac OS X preview to open pictures and pdf files. So my exact goal is to create an application of the Preview-style to show my CGImage pictures, in other words, to replace the page(PDFKit page object) of a displayed pdf document with the CGImage object. You can do this, but since you mention Preview, the Leopard version of Preview uses in fact the ImageKit view and ImageKit browser class (thumbnails) for displaying images. If we can use the PDFKit document model to display a batch of CGImages, then how to use the pdf built-in functions such as: Move \Select\Rotate\Scale\Zoom and so on? Zoom is built in to PDFView (-[PDFView setScaleFactor:]. You can rotate a page by setting the rotation on the PDFPage and telling the PDFView to re-layout. Move is done by tracking the mouse in a PDFView subclass and calling scrollToPoint: on the clip view enclosing the PDFView's document view. Select is also done with a PDFView subclass. Also handle the mouse as for tracking above, but in select mode you keep track of the selected area as a rectangle - in the PDFView subclass you can "post draw" on top of the PDF page in -[PDFPage drawPage:] and draw part of the page "darkended" or selected. The above is a little brief (no sample code) but is essentially what Preview does. There is sample code to show you how to subclass PDFView and handle your own mouse tracking, post-drawing, etc. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: indexForPage: page not found - Problem with PDFView on Tiger, works fine on Leopard
On Feb 17, 2008, at 1:07 PM, Kevin Ross wrote:
This snippet of code works fine on Leopard but not on Tiger.
- (void)awakeFromNib {
NSString *outPath = [@"~/Desktop/debug.pdf"
stringByExpandingTildeInPath];
[self writeDebugPDFDocument:[self pdfDocument] toPath:outPath];
[self setPageCount:[pdfDocument pageCount]]; < pageCount = 1
(like it should)
[pdfView setDocument:[self pdfDocument]];<--- Throws
exception here.
[self skipToPage:[NSNumber numberWithInt:1]];
[pdfView layoutDocumentView];
}
Debugger log output:
2008-02-17 12:26:51.163 Imposer[455] indexForPage: page not found
2008-02-17 12:26:51.163 Imposer[455] *** Uncaught exception:
indexForPage: page not found
Stack trace:
#0 0x92c0107c in _NSRaiseError
#1 0x92c00db8 in +[NSException raise:format:]
#2 0x9648b894 in -[PDFDocument indexForPage:]
#3 0x9648aaec in -[PDFView viewSizeForPage:]
#4 0x9648a1b0 in -[PDFView resizeDisplayView:]
#5 0x964899e0 in -[PDFView setDocument:]
#6 0x000d512c in -[KRImposerDocument awakeFromNib] at
KRImposerDocument.m:78
It's hard to answer you without knowing more about your class/app.
I take it the code snippet is from KRImposerDocument? This is a
PDFView subclass?
What does skipToPage: do? Specifically, is it 1-based or zero based
(because PDFKit is zero-based).
I'm sure it's something I'm doing (possibly some autorelease
craziness?) since this snippet works fine when the document is
opened via the "Open" menu, and only happens when a new document has
been created programmatically from the originally opened one.
That bit puzzles me. How are you creating the document
programatically? There were small odd differences between Leopard and
Tiger here
John Calhoun—
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Re: Help with displaying encrypted PDF image
On Feb 17, 2008, at 5:52 AM, Mario Gajardo Tassara wrote: Hi, im trying to displaying encrypted pdf formated images in cocoa. this is my code to load these images, but nothing is displayed, however non encrypted pdf displayed with zero problems. All my encrypted images seems to be decrypted because the printf statement "unlocked" is reached always. Yes, for an encrypted PDF document, -[PDFDocument dataRepresentation], -[PDFDocument writeToURL:], etc. do nothing. You can still get the image data by hand by drawing the PDFPage into a CGPDFContext. John Calhoun—___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
