Re: [XBoard-devel] XBoard 4.7.3: Full board textures + maximize window

[Sebastian Pipping]

Hello,


On 17.09.2014 10:02, H.G. Muller wrote:
> The problem seems to be that you want
> one and the same texture bitmap to work over a very wide range of board
> sizes.

well, yes, of course.


> Well, that could work, but only if the width of the grid lines is
> 1 pixel. Which would make them look a bit thin at monster board sizes.

Say hello to non-integer factor image scaling, please.


>> Okay, cool.
> I just pushed a patch to hgm.nubati.net to do integer scaling up on
> demand of the PNG. Perhaps you can test it with the original XQ board
> bitmap.

With the shipped xqboard.png, it looks better now, but that does have to
do with the specific image.  In particular:

 * It can be crashed by resizing (small, big, crash), e.g. by running

     # wmctrl -r "xboard:" -e 0,0,0,100,100
     # wmctrl -r "xboard:" -e 0,0,0,1000,1000

   which makes XBoard crash with a Cairo assertion

     xboard: [..]/cairo-surface.c:930: cairo_surface_destroy:
     Assertion `((*&(&surface->ref_count)->ref_count) > 0)' failed.

   (Running cairo 1.12.16 over here).

 * The lines

     if(w > 256 & h > 256) { // full-board image?
       while(squareSize*9 > n*w || squareSize*10 > n*h) n++;
     } else {
       while(squareSize > n*w || squareSize > n*h) n++;
     }

   are the exact guessing that I asked /not/ to do.
   Furthermore, "&" probably should be "&&" and those
   loops could be resolved by using a non-loop formula.

 * It's still as broken for other_1800x2000.png .


To get it compiling, I needed to apply the gettext 0.18 patch from
https://savannah.gnu.org/bugs/index.php?39970 . It would be cool to have
that applied upstream: even Debian stable has gettext 0.18 by now.
Which distro and version of gettext are you running?


> (I cannot, as my monitor resolution does not allow me to make
> the window larger than the bitmap.) Currently it still uses a fixed size
> limit to decide if it should treat it as a full-board bitmap or a single
> square.

You can use wmctrl to blow up the window size even beyond screen size, e.g.

  wmctrl -r "xboard:" -e 0,0,0,2000,2000 ; echo $?

With wmctrl 1.07 and XFCE that works as expected over here.

Best,



Sebastian