Re: extending Pango Attributes
Paul Plaquette wrote: Hello, for a project I have to add specific tag that come with attributes. I also have to support pango span tag and its attributes as the set of pango facility markups. Looking at PangoAttributes, I am thinking to use that data structure as a basis and to extend it for the use of my specific markup call it mymarkup and its attributes. It should also possible to use most of the mecanism that deals with pango attributes and list of attributes. i could first parse my own set of markups and attributes using Markup. and then parse the reste of the text using pango_parse_markup(). That should work. i send this message to take advice form the community: do you think it is possible to do it ? Should be possible, but a bit of a pain. We want to make pango markup extensible, but have not came up with the design yet. behdad thanks, Trilda ___ gtk-i18n-list mailing list gtk-i18n-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-i18n-list ___ gtk-i18n-list mailing list gtk-i18n-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-i18n-list
Re: pango layout in irregular (non-rectangular) bounding shape
august wrote: hey y'all, I'm just getting started with cairo and pango and trying to figure out how to render text within a non-rectangular bounding shape? I can already render stuff to screen and bound a text segment by width and heightbut still haven't figgered out how to translate it by x,y. If you are using pango_cairo_show_layout(), you need a cairo_move_to() before that. In addition, I'd like to render text inside a polygon shape. This is not possible yet. Here is the bug tracking this issue: http://bugzilla.gnome.org/show_bug.cgi?id=435706 Can someone point me in the right direction? I've been reading the mailinglist archives and looking at the online api reference trying to figure this out. I've also started to inspect the Inkscape code to see how they do itbut can't yet see where. Do I need to iterate through the text segment, character by character, and draw each glyph to screen, measuring it's x and y? Is that slow? No. Just do that one line at a time. behdad Any help or pointers would be much appreciated. many thanks -august. ___ gtk-i18n-list mailing list gtk-i18n-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-i18n-list ___ gtk-i18n-list mailing list gtk-i18n-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-i18n-list
Re: pango layout in irregular (non-rectangular) bounding shape
august, I can already render stuff to screen and bound a text segment by width and height I guess you tried PangoLayout and friends. how to render text within a non-rectangular bounding shape? Can someone point me in the right direction? If I were you, I'd be using PangoItem, PangoGlyphString, and friends. They are lower layer interface to pango, and you need to write more codes than using PangoLayout, but it gives you better control over layout. (There may be some easier ways if you only needs fill texts ina non rectangular area, but I don't know.) The following outlines what you need to do: (1) Call pango_itemize() once for your text, (2) Call pango_break() for your entire text, (3) Call pango_shape() for each PangoItem you got, (4) Fold the text into lines, scanning the list of PangoItems, calling pango_glyph_string_get_width() for each PangoGlyphString you got, also breaking several PangoItem in a middle, referring to PangoLogAttr array you got (This will be the most complicated step), (5) Either call pango_reorder_items() for each folded line and somehow refrect the results to your list of PangoGlyphString (or does an equivalent processing manually as suggested by pango document...), and (6) Call pango_cairo_show_glyph_string() for each PangoGlyphString, moving the cairo current point appropriately. Hope this helps, Alissa Alissa, thanks so much for taking the time to outline all of this. I am still learning the pango api and this helps. -august. ___ gtk-i18n-list mailing list gtk-i18n-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-i18n-list
Re: pango layout in irregular (non-rectangular) bounding shape
In addition, I'd like to render text inside a polygon shape. This is not possible yet. Here is the bug tracking this issue: http://bugzilla.gnome.org/show_bug.cgi?id=435706 Behdad, How far did you get with that? I also see you were looking at Nathan Hurst's code for inkscape. I'd love to study some of that code...but it seems like most of the links on that page are gone now. Is this something I could help implement? -august. ___ gtk-i18n-list mailing list gtk-i18n-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-i18n-list
PangoCairo help
Hi, I'm very new user of Linux World. I'm doing a program for rendering text using pango cairo. I need rendered text on the Video Memory. I've developd a class to access to the frame buffer, and it's work correctly. Which is the correct way to start? I mean I've to created a cairo context and the I've to copy byte per byte (copy the context on the frame buffer with an appropriate loop). Can you tell me more or send some example? Thanks a lot. Andrea Andrea Ricchetti ElectronicDepartment Software Engineer Snap-on Equipment Via Prov. per Carpi, 33 42015 Correggio (RE) - ITALY Tel: +39-0522 733411- Fax: +39-0522 733410 andrea.ricche...@snapon.com ___ gtk-i18n-list mailing list gtk-i18n-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-i18n-list
