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	st-changealpha-20230519-b44f2ad.diff (2409B)
	---
	1 diff --git a/config.def.h b/config.def.h
	2 index 91ab8ca..8a06176 100644
	3 --- a/config.def.h
	4 +++ b/config.def.h
	5 @@ -93,6 +93,9 @@ char *termname = "st-256color";
	6 */
	7 unsigned int tabspaces = 8;
	8
	9 +/* Background opacity */
	10 +float alpha_def;
	11 +
	12 /* Terminal colors (16 first used in escape sequence) */
	13 static const char *colorname[] = {
	14 /* 8 normal colors */
	15 @@ -201,6 +204,9 @@ static Shortcut shortcuts[] = {
	16 { TERMMOD, XK_Y, selpaste, {.i = …
	17 { ShiftMask, XK_Insert, selpaste, {.i = …
	18 { TERMMOD, XK_Num_Lock, numlock, {.i = …
	19 + { MODKEY, XK_bracketleft, chgalpha, {.f = -…
	20 + { MODKEY\|ShiftMask, XK_braceright, chgalpha, {.f = +…
	21 + { MODKEY, XK_bracketright,chgalpha, {.f = …
	22 };
	23
	24 /*
	25 diff --git a/st.h b/st.h
	26 index fd3b0d8..3bb587e 100644
	27 --- a/st.h
	28 +++ b/st.h
	29 @@ -124,3 +124,4 @@ extern unsigned int tabspaces;
	30 extern unsigned int defaultfg;
	31 extern unsigned int defaultbg;
	32 extern unsigned int defaultcs;
	33 +extern float alpha_def;
	34 diff --git a/x.c b/x.c
	35 index aa09997..f8c8c1a 100644
	36 --- a/x.c
	37 +++ b/x.c
	38 @@ -59,6 +59,7 @@ static void zoom(const Arg *);
	39 static void zoomabs(const Arg *);
	40 static void zoomreset(const Arg *);
	41 static void ttysend(const Arg *);
	42 +static void chgalpha(const Arg *);
	43
	44 /* config.h for applying patches and the configuration. */
	45 #include "config.h"
	46 @@ -1147,6 +1148,9 @@ xinit(int cols, int rows)
	47 usedfont = (opt_font == NULL)? font : opt_font;
	48 xloadfonts(usedfont, 0);
	49
	50 + /* Backup default alpha value */
	51 + alpha_def = alpha;
	52 +
	53 /* colors */
	54 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
	55 xloadcols();
	56 @@ -1371,6 +1375,24 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, cons…
	57 return numspecs;
	58 }
	59
	60 +void
	61 +chgalpha(const Arg *arg)
	62 +{
	63 + if (arg->f == -1.0f && alpha >= 0.1f)
	64 + alpha -= 0.1f;
	65 + else if (arg->f == 1.0f && alpha < 1.0f)
	66 + alpha += 0.1f;
	67 + else if (arg->f == 0.0f)
	68 + alpha = alpha_def;
	69 + else
	70 + return;
	71 +
	72 + dc.col[defaultbg].color.alpha = (unsigned short)(0xFFFF * alpha);
	73 + /* Required to remove artifacting from borderpx */
	74 + cresize(0, 0);
	75 + redraw();
	76 +}
	77 +
	78 void
	79 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len,…
	80 {