Re: Fonts (2) -> problems with GSFontAntiAlias 'YES'
> Pascal Bourguignon wrote: > > > When I open the Font Panel, I get a list with about 60 different > > fonts. However, in the Preview they all look the same but the > > following: > > I reverted the xgps backend to find fonts by pixel size. Please let me > know if anything improves. Yes and no. I updated from CVS 12 yours ago (after your email), and tested it now. Here are the results. (See attached window content dumps). I've found what produced the bad results I got : I had the following default set: NSGlobalDomain GSFontAntiAlias 'YES' When removing it, everything works as expected, I can change the fonts and size with the corresponding defaults and I don't get any black rectangle. When I have NSGlobalDomain GSFontAntiAlias 'YES' set, then: 1/ It seems that for most windows, the display of the text halts halfway. For the menu, I've seen once when updating slowly that it had transitorily the state of black rectangles, then the text was overwritten. For the other windows, when resizing the window, sometimes the text would appear and sometimes it would disappear, but this state stays untile the window is resized again. Notably, for the open panel, whatever navigation is done don't change the state black rectangle or text. Moving the window off-screen, then back on-scren does not change anything. The same occurs for the Font panel. When I don't get the black rectangles, it previews correctly the fonts. The text in pop-up menus appears correctly. It's probably the same bug than that that don't display pictures in a window when not running with a runloop. Note that in that case, moving the window off-screen then on-screen would at least show the picture. 2/ The sizes are correct. The NSFontSize default is not taken into account, but the other NS*FontSize are. 3/ The same font is used everywhere (seems to be Times) but in the menu title. Thanks for the font size correction. -- __Pascal_Bourguignon__ (o_ Software patents are endangering () ASCII ribbon against html email //\ the computer industry all around /\ and Microsoft attachments. V_/ the world http://lpf.ai.mit.edu/ 1962:DO20I=1.100 2001:my($f)=`fortune`; http://petition.eurolinux.org/ -BEGIN GEEK CODE BLOCK- Version: 3.1 GCS/IT d? s++:++(+++)>++ a C+++ UB+++L$S+X>$ P- L+++ E++ W++ N++ o-- K- w-- O- M++$ V PS+E++ Y++ PGP++ t+ 5? X+ R !tv b++(+) DI+++ D++ G++ e+++ h+(++) r? y---? UF --END GEEK CODE BLOCK-- <><><>
Re: Fonts (2) -> problems with GSFontAntiAlias 'YES'
Perhaps I should explain a bit more on how the current Anti-Alias font implementation works and which limitations are caused by this. This code was a hack that I came up with kust to see if there is any demand for better fonts in the GNUstep community or if this is only a low priority addon. Currently the available fonts are determined by the font cacher using the standard X font enumeration. This knows nothing about anti-aliasing and which fonts would support it. Than when a font is selected and AA is switched on the normal X name of the font is handed on to the AA font module that tries to create a font for this X name, if it does not find a suitable AA font it falls back on a standard AA font (or even a simple X font). SO what would be needed here is a separate font manager for the AA fonts that would run its own cacher, looking only at AA fonts. This manager could than know more about the available fonts and select a better one if the requested is not available. This should explain your 3. problem and a way to solve it. What it does not account for is the first problem you are having. For this I will need some more information. Does this only happen for specific text? (E.g. some encodings might not be available for the AA fonts) I could not reproduce this with the standard GNUstep applications. Cheers Fred Pascal Bourguignon wrote: > > > Pascal Bourguignon wrote: > > > > > When I open the Font Panel, I get a list with about 60 different > > > fonts. However, in the Preview they all look the same but the > > > following: > > > > I reverted the xgps backend to find fonts by pixel size. Please let me > > know if anything improves. > > Yes and no. I updated from CVS 12 yours ago (after your email), and > tested it now. Here are the results. (See attached window content > dumps). > > I've found what produced the bad results I got : I had the following > default set: NSGlobalDomain GSFontAntiAlias 'YES' > > When removing it, everything works as expected, I can change the fonts > and size with the corresponding defaults and I don't get any black > rectangle. > > When I have NSGlobalDomain GSFontAntiAlias 'YES' set, then: > > 1/ > > It seems that for most windows, the display of the text halts > halfway. > > For the menu, I've seen once when updating slowly that it had > transitorily the state of black rectangles, then the text was > overwritten. > > For the other windows, when resizing the window, sometimes the text > would appear and sometimes it would disappear, but this state stays > untile the window is resized again. > > Notably, for the open panel, whatever navigation is done don't change > the state black rectangle or text. Moving the window off-screen, then > back on-scren does not change anything. The same occurs for the Font > panel. When I don't get the black rectangles, it previews correctly > the fonts. > > The text in pop-up menus appears correctly. > > It's probably the same bug than that that don't display pictures in a > window when not running with a runloop. Note that in that case, moving > the window off-screen then on-screen would at least show the picture. > > 2/ > > The sizes are correct. The NSFontSize default is not taken into > account, but the other NS*FontSize are. > > 3/ > > The same font is used everywhere (seems to be Times) but in the menu > title. > > Thanks for the font size correction. ___ Bug-gnustep mailing list [EMAIL PROTECTED] http://mail.gnu.org/mailman/listinfo/bug-gnustep
Re: Fonts (2) -> problems with GSFontAntiAlias 'YES'
Fred Kiefer <[EMAIL PROTECTED]> wrote: > > Perhaps I should explain a bit more on how the current Anti-Alias font > implementation works and which limitations are caused by this. > > This code was a hack that I came up with kust to see if there is any > demand for better fonts in the GNUstep community or if this is only a > low priority addon. > Currently the available fonts are determined by the font cacher using > the standard X font enumeration. This knows nothing about anti-aliasing > and which fonts would support it. Than when a font is selected and AA is > switched on the normal X name of the font is handed on to the AA font > module that tries to create a font for this X name, if it does not find > a suitable AA font it falls back on a standard AA font (or even a simple > X font). SO what would be needed here is a separate font manager for the > AA fonts that would run its own cacher, looking only at AA fonts. This > manager could than know more about the available fonts and select a > better one if the requested is not available. Ok. That behavior is now understandable. I would say that the AA fonts are some different representation of some "same" non AA font. Only that when the user choose the better AA representations of the fonts, and for the specific font currently selected there exist a AA representation, then it's used instead of the normal font, otherwise we keep the normal font. Some fonts may have only AA representations and not be available when AA is not enabled though. That is, the fall back should not be IMHO to a standard AA font, but to a normal font in the same family and typeface. > This should explain your 3. problem and a way to solve it. What it does > not account for is the first problem you are having. For this I will > need some more information. Does this only happen for specific text? > (E.g. some encodings might not be available for the AA fonts) I could > not reproduce this with the standard GNUstep applications. > > Cheers > Fred Well, I last updated from CVS on January 22th, and now this problem does not happen anymore. Anyway, I suspect it was a problem of graphics flushing to the screen, that I believe has been somewhat addressed by recent changes by Adam I think. > > > > When I open the Font Panel, I get a list with about 60 different > > > > fonts. However, in the Preview they all look the same but the > > > > following: > > > > > > I reverted the xgps backend to find fonts by pixel size. Please let me > > > know if anything improves. > > > > Yes and no. I updated from CVS 12 yours ago (after your email), and > > tested it now. Here are the results. (See attached window content > > dumps). > > > > I've found what produced the bad results I got : I had the following > > default set: NSGlobalDomain GSFontAntiAlias 'YES' > > > > When removing it, everything works as expected, I can change the fonts > > and size with the corresponding defaults and I don't get any black > > rectangle. > > > > When I have NSGlobalDomain GSFontAntiAlias 'YES' set, then: > > > > 1/ > > > > It seems that for most windows, the display of the text halts > > halfway. > > > > For the menu, I've seen once when updating slowly that it had > > transitorily the state of black rectangles, then the text was > > overwritten. > > > > For the other windows, when resizing the window, sometimes the text > > would appear and sometimes it would disappear, but this state stays > > untile the window is resized again. > > > > Notably, for the open panel, whatever navigation is done don't change > > the state black rectangle or text. Moving the window off-screen, then > > back on-scren does not change anything. The same occurs for the Font > > panel. When I don't get the black rectangles, it previews correctly > > the fonts. > > > > The text in pop-up menus appears correctly. > > > > It's probably the same bug than that that don't display pictures in a > > window when not running with a runloop. Note that in that case, moving > > the window off-screen then on-screen would at least show the picture. > > > > 2/ > > > > The sizes are correct. The NSFontSize default is not taken into > > account, but the other NS*FontSize are. > > > > 3/ > > > > The same font is used everywhere (seems to be Times) but in the menu > > title. > > > > Thanks for the font size correction. -- __Pascal_Bourguignon__ (o_ Software patents are endangering () ASCII ribbon against html email //\ the computer industry all around /\ and Microsoft attachments. V_/ the world http://lpf.ai.mit.edu/ 1962:DO20I=1.100 2001:my($f)=`fortune`; http://petition.eurolinux.org/ -BEGIN GEEK CODE BLOCK- Version: 3.1 GCS/IT d? s++:++(+++)>++ a C+++ UB+++L$S+X>$ P- L+++ E++ W++ N++ o-- K- w-- O- M++$ V PS+E++ Y++ PGP++ t+ 5? X+ R !tv b++(+) DI+++ D++ G++ e+++ h+(++)
