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patch 9.0.1991: no cmdline completion for setting the font

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Problem:  no cmdline completion for setting the font
Solution: enable it on Win32 and GTK builds

Add guifont cmdline completion (for Windows and GTK)

For Windows, auto-complete will only suggest monospace fonts as that's
the only types allowed. Will also suggest font options after the colon,
including suggesting the current font size for convenience, and misc
charset and quality options like `cANSI` and `qCLEARTYPE`.

For GTK, auto-complete will suggest only monospace fonts for `guifont`
but will include all fonts for `guifontwide`. The completion code
doesn't currently suggest the current font size, as the GTK guifont
format does not have a clear delimiter (':' for other platforms).

closes: #13264

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
This commit is contained in:
Yee Cheng Chin
2023-10-05 20:54:21 +02:00
committed by Christian Brabandt
parent ea746f9e86
commit 290b887e8c
9 changed files with 362 additions and 9 deletions
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56
src/gui_gtk_x11.c
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@@ -5315,6 +5315,62 @@ gui_mch_free_font(GuiFont font)
pango_font_description_free(font);
}
/*
* Cmdline expansion for setting 'guifont' / 'guifontwide'. Will enumerate
* through all fonts for completion. When setting 'guifont' it will only show
* monospace fonts as it's unlikely other fonts would be useful.
*/
void
gui_mch_expand_font(optexpand_T *args, void *param, int (*add_match)(char_u *val))
{
PangoFontFamily **font_families = NULL;
int n_families = 0;
int wide = *(int *)param;
if (args->oe_include_orig_val && *args->oe_opt_value == NUL && !wide)
{
// If guifont is empty, and we want to fill in the orig value, suggest
// the default so the user can modify it.
if (add_match((char_u *)DEFAULT_FONT) != OK)
return;
}
pango_context_list_families(
gui.text_context,
&font_families,
&n_families);
for (int i = 0; i < n_families; i++)
{
if (!wide && !pango_font_family_is_monospace(font_families[i]))
continue;
const char* fam_name = pango_font_family_get_name(font_families[i]);
if (input_conv.vc_type != CONV_NONE)
{
char_u *buf = string_convert(&input_conv, (char_u*)fam_name, NULL);
if (buf != NULL)
{
if (add_match(buf) != OK)
{
vim_free(buf);
break;
}
vim_free(buf);
}
else
break;
}
else
{
if (add_match((char_u *)fam_name) != OK)
break;
}
}
g_free(font_families);
}
/*
* Return the Pixel value (color) for the given color name.
*