Re: Sv: Sv: Support for background transparency

["Håkon Flatval" <hkon20@hotmail.com>]

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I see - I suppose it's about time I learnt using Magit.
I have attached a new changelog, partially generated from the local
diff which should better fit the requirements.

> That looks good, although the Emacs convention is to put two spaces
> after '.'

I have corrected this in the latest patch sent to Po Lu.

Do tell if it needs more changes.

- Håkon


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2022-01-25  Håkon Flatval  <hkon20@hotmail.com>

	* src/xterm.c (x_set_cr_source_with_gc_background):
        Add support for transparent drawing.
        (x_clear_rectangle):
        New function for drawing with background colors.
	(x_draw_rectangle):
        Use x_clear_rectangle function for drawing background.


	* src/xfns.c (Fx_create_frame): Add alpha-background defaults.
	(x_create_tip_frame): Add alpha-background defaults.
	(x_frame_parm_handlers): Add alpha-background handler.

	* src/w32fns.c (Fx_create_frame): Add alpha-background defaults.
	(Fx_create_frame): Add alpha-background defaults.
	(w32_create_tip_frame): Add alpha-background defaults.
	(w32_frame_parm_handlers): Add alpha-background handler.

	* src/pgtkfns.c (pgtk_frame_parm_handlers):
        Add alpha-background handler.
	(Fx_create_frame): Add alpha-background defaults.
	(x_create_tip_frame): Add alpha-background defaults.

	* src/nsfns.m (ns_frame_parm_handlers): Add alpha-background handler.
	(Fx_create_frame): Add alpha-background defaults.

	* src/haikufns.c (haiku_create_frame): Add alpha-background defaults.
	(haiku_create_tip_frame): Add alpha-background defaults.
        (haiku_frame_parm_handlers): Add alpha-background handler.


	* src/gtkutil.c (xg_create_frame_widgets):
        Prevent GTK from filling in background.
	(xg_create_frame_widgets): Add support for 32-bit visual.


	* src/frame.h (GCALIGNED_STRUCT): Add alpha_background field.


	* src/frame.c (frame_parms): Add alpha-background frame parameter.
	(gui_set_alpha_background):
        Add gui function for setting alpha-background.
	(syms_of_frame): Add symbol for alpha-background.

	* doc/lispref/frames.texi (Font and Color Parameters):
        Add documentation on alpha-background.

	* doc/emacs/xresources.texi (Table of Resources):
	List alpha and alpha-background as X resources.