Hello all. Another question still regarding with pdf's.
when I load a pdf into a web view, I can tap for a while and the magnification loop will appear, this doesn't happens when using Quartz.. I was reading some post on internet, and the authors create their own magnification view. Is there any other way? or I will have to do this by hand?, Also what can you tell me about allowing selection in the pdf? I hadn't figure that out... :( Thanks for the help Gustavo On 19.5.2010, at 15:08, Gustavo Pizano wrote: > Rafael hi > > Thanks for the info,, I will be testing the behavior with some pdfs and see > whats better, to keep the CGPDFDocumentRef and destroy it when closing the > pdf.. or open-close each time I change.. I guess I must decided what I want > speed vs memory usage. > > .... > > G, > > On 19.5.2010, at 15:02, Rafael Cerioli wrote: > >> Hi Gustavo, >> >> When you draw a CGPDFPageRef into a graphic context, Quartz will hold images >> inside the PDF page in a sort of cache (at least, it seems with Instrument >> Object Alloc). You can only empty that cache by destroying the >> CGPDFDocumentRef. >> >> However, if you do not destroy your CGPDFDocumentRef between two consecutive >> renderings, you will gain speed. >> I suggest that you test what best fits you. It depends on the rendering >> speed you need, and the size of the images in your PDF. >> And don't forget to use instruments. >> >> >> Le 19 mai 2010 à 07:32, Gustavo Pizano a écrit : >> >>> Laurent hi. >>> About your warning. >>> >>> SO If I have a pdf of many many pages, I shall just open de CGPDFDocument, >>> then get the required page using CGPDFDocumetnGetPage(), dra the page then >>> release the CGPDDocument?.. and when swapping pages just release the >>> current page, open document again get next page and render?... I don't >>> like this opening and closing CGPDFDocument... but shall it be like this? >>> that only I actually load into memory the page Im drawing using the >>> CGContextDrawPDFPage? >>> >>> G. >>> >>> >>> On 19.5.2010, at 12:11, Laurent Cerveau wrote: >>> >>>> Gustavo >>>> >>>> You can use the CGPDF API. However be careful on memory usage (in >>>> particular keeping the CGPDFDocument open all the time could lead to some >>>> memory issues that could be workarounded by closing and reopening it) >>>> >>>> Regards >>>> >>>> laurent >>>> >>>> >>>> On Wednesday, May 19, 2010, at 12:07PM, "Gustavo Pizano" >>>> <gustavxcodepic...@gmail.com> wrote: >>>>> Hello all. >>>>> >>>>> I would want to know if I can render pdf into iPad using quartz, or I >>>>> have to use UIWebView... or whats the way to achieve this? >>>>> >>>>> >>>>> Any headlights are appreciate it. >>>>> >>>>> thanks >>>>> >>>>> Gustavo >>>>> >>>>> _______________________________________________ >>>>> >>>>> 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/lcerveau%40me.com >>>>> >>>>> This email sent to lcerv...@me.com >>>>> >>>>> >>> >>> _______________________________________________ >>> >>> 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/rafael.cerioli%40gmail.com >>> >>> This email sent to rafael.ceri...@gmail.com >> > _______________________________________________ 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
