Benoît Minisini ha scritto: >> Am Samstag, den 30.01.2010, 00:35 +0100 schrieb Benoît Minisini: >> >>>> Salut, >>>> >>>> I' using gambas2 2.19. >>>> For printing text, I use Draw.Text that works well. >>>> But when I print Text out of a TextArea, where are sometimes control >>>> chars ("\n" and "\t") in the text, I found a problem. >>>> >>>> The LF (\n) is handled, but not the Tab (\t) it is show as a rectangle. >>>> >>>> Do I miss something ? Nothing found about! >>>> >>>> Does anybody have a hint/workaround ? >>>> >>> Tabs are not handled automatically, you must handle them yourself. >>> >>> Regards, >>> >> Salut Benoît, >> >> where does gambas get the "tab width" in controls like TextArea, >> is there a set parameter somewhere ? >> >> > > This is managed by the underlying toolkit. I don't see it. > > A tab width is normally eight spaces, meaning with that, that by doing a "tabulation" you go to the next position multiple of eight (counting from 0). By pressing TAB in any of the first 7 columns, from 0 to 6, you go to column 7. Some prefer 4 places, others 3, and so on. Note that the gambas editor does not use this concept exactly - instead of inserting a TAB character, the tab keys make indentation. Anyway, (suggestion), even the gambas editor has a preference to set the indentation width.
In every terminal (both true ones and emulators), tab width defaults to eight, but it is possible to program them differently, not necessarily even-spaced. So when printing a TAB character, the cursor should go to the "next tab position" which, if not defined, is the next position evenly divisible by eight. In a graphic context things are very similar, except that the columns are much smaller and a character occupies more columns (at least 5 or 6). A good starting point is to take, for a tabulator width, eight times the width of a space, or even more for proportional fonts (they tend to have spaces narrower than other characters). But then depends on the application. Regards, -- Doriano Blengino "Listen twice before you speak. This is why we have two ears, but only one mouth." ------------------------------------------------------------------------------ The Planet: dedicated and managed hosting, cloud storage, colocation Stay online with enterprise data centers and the best network in the business Choose flexible plans and management services without long-term contracts Personal 24x7 support from experience hosting pros just a phone call away. http://p.sf.net/sfu/theplanet-com _______________________________________________ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user