81 lines
2.4 KiB
Diff
81 lines
2.4 KiB
Diff
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diff --git a/config.def.h b/config.def.h
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index 91ab8ca..8a06176 100644
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--- a/config.def.h
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+++ b/config.def.h
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@@ -93,6 +93,9 @@ char *termname = "st-256color";
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*/
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unsigned int tabspaces = 8;
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+/* Background opacity */
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+float alpha_def;
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+
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/* Terminal colors (16 first used in escape sequence) */
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static const char *colorname[] = {
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/* 8 normal colors */
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@@ -201,6 +204,9 @@ static Shortcut shortcuts[] = {
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{ TERMMOD, XK_Y, selpaste, {.i = 0} },
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{ ShiftMask, XK_Insert, selpaste, {.i = 0} },
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{ TERMMOD, XK_Num_Lock, numlock, {.i = 0} },
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+ { MODKEY, XK_bracketleft, chgalpha, {.f = -1} }, /* Decrease opacity */
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+ { MODKEY|ShiftMask, XK_braceright, chgalpha, {.f = +1} }, /* Increase opacity */
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+ { MODKEY, XK_bracketright,chgalpha, {.f = 0} }, /* Reset opacity */
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};
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/*
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diff --git a/st.h b/st.h
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index fd3b0d8..3bb587e 100644
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--- a/st.h
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+++ b/st.h
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@@ -124,3 +124,4 @@ extern unsigned int tabspaces;
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extern unsigned int defaultfg;
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extern unsigned int defaultbg;
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extern unsigned int defaultcs;
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+extern float alpha_def;
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diff --git a/x.c b/x.c
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index aa09997..f8c8c1a 100644
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--- a/x.c
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+++ b/x.c
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@@ -59,6 +59,7 @@ static void zoom(const Arg *);
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static void zoomabs(const Arg *);
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static void zoomreset(const Arg *);
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static void ttysend(const Arg *);
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+static void chgalpha(const Arg *);
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/* config.h for applying patches and the configuration. */
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#include "config.h"
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@@ -1147,6 +1148,9 @@ xinit(int cols, int rows)
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usedfont = (opt_font == NULL)? font : opt_font;
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xloadfonts(usedfont, 0);
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+ /* Backup default alpha value */
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+ alpha_def = alpha;
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+
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/* colors */
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xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
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xloadcols();
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@@ -1371,6 +1375,24 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
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return numspecs;
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}
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+void
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+chgalpha(const Arg *arg)
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+{
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+ if (arg->f == -1.0f && alpha >= 0.1f)
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+ alpha -= 0.1f;
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+ else if (arg->f == 1.0f && alpha < 1.0f)
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+ alpha += 0.1f;
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+ else if (arg->f == 0.0f)
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+ alpha = alpha_def;
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+ else
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+ return;
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+
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+ dc.col[defaultbg].color.alpha = (unsigned short)(0xFFFF * alpha);
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+ /* Required to remove artifacting from borderpx */
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+ cresize(0, 0);
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+ redraw();
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+}
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+
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void
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xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
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{
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