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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 =  0} },
     17  	{ ShiftMask,            XK_Insert,      selpaste,       {.i =  0} },
     18  	{ TERMMOD,              XK_Num_Lock,    numlock,        {.i =  0} },
     19 +	{ MODKEY,               XK_bracketleft, chgalpha,       {.f = -1} }, /* Decrease opacity */
     20 +	{ MODKEY|ShiftMask,     XK_braceright,  chgalpha,       {.f = +1} }, /* Increase opacity */
     21 +	{ MODKEY,               XK_bracketright,chgalpha,       {.f =  0} }, /* Reset opacity */
     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, const Glyph *glyphs, int len, int x
     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, int x, int y)
     80  {