Re: [webkit-dev] Duplicate page: Implementing Print Preview
On May 28, 2009, at 1:13 PM, Marc-Antoine Ruel wrote: To clarify Sverrir and my intent; PDF (or EMF as it's currently done on the windows port of Chromium) snapshot is fine for a static print preview but useless for a dynamic one. We'd prefer to have something interactive. If a user changes the layout or the page setup, the print preview is immediately updated. To do that, we need to make the print preview application modal (because of javascript interactions) and I think it defeats the purpose of tabbed browsing. (Please correct me if I'm mistaken) The goal is to make the print preview in its own tab and not modal anymore. So the idea is to duplicate the Document/Frame along with RenderView and all their children into a new WebView, disable their javascript, timers and url request ability. This copy would be used to regenerate the print preview/printed document. That's quite a daunting task, we'd like to know if we missed something obvious (or already existing!) and if not, if anyone else would like to see the same feature. I don't think you actually have to clone the render tree explicitly. You could use DOM operations to clone the DOM and let new renderers get constructed by that process. dave ___ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
[webkit-dev] Duplicate page: Implementing Print Preview
Hi all, I'm working on Google Chrome and trying to come up with a way to implement print preview. To be able to display it in a separate tab we need to be able to duplicate the current page in memory so the user can continue to interact with the original page. Javacript, animations etc should continue on the original page but be frozen in the print preview version. What I've tried so far is to select everything on the page (Frame::selection()-SelectAll()) and Frame::GetSelection(true) but the HTML does not fully describe the page and this has the downside of modifying the users selection on the page. I've poked around in WebKit a bit and as far as I can tell the document, rendertree and the views are fairly integrated and not easy to take a snapshot of the full state of the document. I would appreciate any insights on this though since I might have missed something obvious. If nothing existing can be reused then adding this functionality should benefit all ports. But again I need your insights on how this can be done (if at all). Sverrir ___ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
Re: [webkit-dev] Duplicate page: Implementing Print Preview
Can you render the page to PDF and display the PDF? Maybe you could render the page into bitmaps if you aren't able to support PDF. dave (hy...@apple.com) On May 27, 2009, at 11:53 AM, Sverrir Á. Berg wrote: Hi all, I'm working on Google Chrome and trying to come up with a way to implement print preview. To be able to display it in a separate tab we need to be able to duplicate the current page in memory so the user can continue to interact with the original page. Javacript, animations etc should continue on the original page but be frozen in the print preview version. What I've tried so far is to select everything on the page (Frame::selection()-SelectAll()) and Frame::GetSelection(true) but the HTML does not fully describe the page and this has the downside of modifying the users selection on the page. I've poked around in WebKit a bit and as far as I can tell the document, rendertree and the views are fairly integrated and not easy to take a snapshot of the full state of the document. I would appreciate any insights on this though since I might have missed something obvious. If nothing existing can be reused then adding this functionality should benefit all ports. But again I need your insights on how this can be done (if at all). Sverrir ___ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev ___ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
Re: [webkit-dev] Duplicate page: Implementing Print Preview
Interesting idea. I see two downsides to that though. Firstly I think need some kind of PDF library since only Mac's have native support and when the user needs to change the layout of the page (margins, portrait/landscape) I would need to re-create the PDF again? Sverrir On Wed, May 27, 2009 at 1:03 PM, David Hyatt hy...@apple.com wrote: Can you render the page to PDF and display the PDF? Maybe you could render the page into bitmaps if you aren't able to support PDF. dave (hy...@apple.com) On May 27, 2009, at 11:53 AM, Sverrir Á. Berg wrote: Hi all, I'm working on Google Chrome and trying to come up with a way to implement print preview. To be able to display it in a separate tab we need to be able to duplicate the current page in memory so the user can continue to interact with the original page. Javacript, animations etc should continue on the original page but be frozen in the print preview version. What I've tried so far is to select everything on the page (Frame::selection()-SelectAll()) and Frame::GetSelection(true) but the HTML does not fully describe the page and this has the downside of modifying the users selection on the page. I've poked around in WebKit a bit and as far as I can tell the document, rendertree and the views are fairly integrated and not easy to take a snapshot of the full state of the document. I would appreciate any insights on this though since I might have missed something obvious. If nothing existing can be reused then adding this functionality should benefit all ports. But again I need your insights on how this can be done (if at all). Sverrir ___ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev ___ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
