[webkit-reviews] A patch I have!

Devin Lane devin at devserver.org
Sat Jun 11 02:28:02 PDT 2005


Thanks for the reply!  I went ahead and did some looking and some  
coding, and implemented it the way you wanted.  It's pretty  
convenient how the textSizeMultiplier matches up perfectly with the  
PDFView's scaling. (1.0 for 100% in both cases)  Although I couldn't  
find a way to adjust the range that the text can be resized within,  
the range seems to provide ample zoom levels for all but the most  
demanding users.

Below is the patch file: 
Also, I'm not two happy about having to include 3 more files just to  
get it to compile.  I couldn't get gcc to figure out about the  
webView and textSizeMultiplier methods without importing the headers  
for WebView and WebFrame, and the WebDocumentInternal is for the  

Hopefully, this is a closer match to what you were looking for.


Devin Lane
Cocoa Programmer
Phone: (503) 775-4906
E-Mail: devin at devserver.org

On Jun 8, 2005, at 9:19 PM, John Sullivan wrote:

> In general we are less likely to accept patches for adding UI  
> features than we are to accept patches for website compatibility  
> issues, because there are more design tradeoffs involved with UI  
> features and they need to be vetted across a wider set of people.
> In this particular case, it's arguable whether the lack of support  
> for keyboard zooming in PDFs is a missing feature or a bug. We've  
> had a number of requests for the PDF view in Safari to support the  
> existing Make Text Bigger and Make Text Smaller commands for  
> zooming. This is not a perfect match, because zooming in PDFs  
> changes the size of images as well as text, whereas these commands  
> in HTML only affect text size, not image size. Even so, I think  
> it's a close enough match that it's a clear improvement to make  
> these commands affect PDF pages. These commands are built into  
> WebKit so that any client could choose to implement UI for them;  
> they have the keyboard equivalents of command-plus and command- 
> minus in Safari.
> So I do think the general idea of your patch is something we want  
> to do in WebKit. However, the implementation in your patch isn't  
> the best way to do it, because it's disconnected from the existing  
> WebKit feature. The approach I'd like to see here is to make  
> PDFView implement the _web_WebDocumentTextSizing protocol that's  
> defined in WebDocumentInternal.h. That way, the existing menu and  
> toolbar items for text sizing in Safari (and other WebKit clients  
> that have implemented UI for this feature) will work for PDFs also.
> There are two implementations of this protocol in WebKit currently  
> that you could look at as models for how to do it in PDFView. One  
> is in WebHTMLView, the other is in WebTextView. I haven't looked at  
> the PDF code myself enough yet to know how straightforward it will  
> be to map WebKit's "text size multiplier" concept to PDF's "zoom  
> level" concept, but that mapping would be the heart of the work to  
> do this feature.
> I'm pretty likely to do this work at some point if nobody beats me  
> to it, but feel free to beat me to it!
> John
> On Jun 7, 2005, at 11:49 PM, Devin Lane wrote:
>> Reviewers:
>> I'm not sure if you are accepting patches for non-bugs, but I made  
>> a patch that adds the ability for the plus and minus keys to  
>> control the zoom level of a PDF that is being viewed in Safari.
>> Here is the patch file:
>> <zoompatch.txt>
>> Since this is my first patch, I'm not at all expecting it to be  
>> included in the actual source, but I thought I would pass it along  
>> just to see if you were interested.
>> I did not preform any regression tests, since this patch affects  
>> neither the renderer or the javascript engine.
>> Let me know if you have any questions,
>> Devin Lane
>> Cocoa Programmer
>> Editor-in-Chief of Tech Pep (Benson H.S. Newspaper)
>> Phone: (503) 775-4906
>> E-Mail: devin at devserver.org
>> _______________________________________________
>> webkit-reviews mailing list
>> webkit-reviews at opendarwin.org
>> http://www.opendarwin.org/mailman/listinfo/webkit-reviews

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