Re: [PATCH] cairolatex: respect transparency setting

[Henri M. <hen...@gm...>]

Now there seems to a problem with ordering of the elements in the
resulting TeX file.  The ticklabels are behind the background image.
Even if transparency is enabled, this is probably a bad idea.  I'll
investigate.

Cheers, Henri

On 21/08/20, 13:34, Henri Menke wrote:
> Currently the cairolatex terminal does not respect transparency options
> given in the terminal setting.  In this minimal example the
> notransparent option is ignored:
> 
>     set terminal cairolatex png notransparent
>     set output "test.tex"
>     plot sin(x)
> 
> Running this through gnuplot and then using `file' reveals that the
> alpha channel is still present:
> 
>     $ gnuplot test.gnuplot && file test.png
>     test.png: PNG image data, 1500 x 900, 8-bit/color RGBA, non-interlace
> 
> With this patch the transparency setting will be honoured.  The current
> default setting of implicitly assuming transparency is unaltered.
> ---
>  term/cairo.trm | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/term/cairo.trm b/term/cairo.trm
> index ee748dfe2..3ef76ecc6 100644
> --- a/term/cairo.trm
> +++ b/term/cairo.trm
> @@ -849,7 +849,7 @@ void cairotrm_graphics()
>  	plot.background.g = cairo_params->background.g;
>  	plot.background.b = cairo_params->background.b;
>  	gp_cairo_set_background(cairo_params->background);
> -	if (ISCAIROLATEX || cairo_params->transparent)
> +	if (cairo_params->transparent)
>  		gp_cairo_clear_background(&plot);
>  	else
>  		gp_cairo_solid_background(&plot);
> -- 
> 2.28.0
>