Add option to change alpha
https://st.suckless.org/patches/changealpha/
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@ -107,6 +107,7 @@ unsigned int tabspaces = 8;
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/* bg opacity */
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float alpha = 0.8;
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float alpha_def;
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/* Terminal colors (16 first used in escape sequence) */
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static const char *colorname[] = {
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@ -218,6 +219,9 @@ static Shortcut shortcuts[] = {
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{ ShiftMask, XK_Page_Down, kscrolldown, {.i = -1} },
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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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4
config.h
4
config.h
@ -112,6 +112,7 @@ unsigned int tabspaces = 8;
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/* bg opacity */
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float alpha = 0.85;
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float alpha_def;
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/* Terminal colors (16 first used in escape sequence) */
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static const char *colorname[] = {
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@ -221,6 +222,9 @@ static Shortcut shortcuts[] = {
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{ ShiftMask, XK_Page_Down, kscrolldown, {.i = -1} },
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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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194
patches/st-alpha-changealpha-20230519-b44f2ad.diff
Normal file
194
patches/st-alpha-changealpha-20230519-b44f2ad.diff
Normal file
@ -0,0 +1,194 @@
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diff --git a/st/config.def.h b/st_patched/config.def.h
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index 91ab8ca..59fc2a9 100644
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--- a/config.def.h
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+++ b/config.def.h
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@@ -93,6 +93,10 @@ char *termname = "st-256color";
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*/
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unsigned int tabspaces = 8;
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+/* bg opacity */
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+float alpha = 0.8;
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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 +205,9 @@ 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/st.h b/st_patched/st.h
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index fd3b0d8..cda8c13 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, alpha_def;
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diff --git a/st/config.mk b/st_patched/config.mk
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index 1e306f8..47c615e 100644
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--- a/config.mk
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+++ b/config.mk
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@@ -16,7 +16,7 @@ PKG_CONFIG = pkg-config
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INCS = -I$(X11INC) \
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`$(PKG_CONFIG) --cflags fontconfig` \
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`$(PKG_CONFIG) --cflags freetype2`
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-LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft \
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+LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft -lXrender\
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`$(PKG_CONFIG) --libs fontconfig` \
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`$(PKG_CONFIG) --libs freetype2`
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diff --git a/st/x.c b/st_patched/x.c
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index aa09997..3b05a55 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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@@ -105,6 +106,7 @@ typedef struct {
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XSetWindowAttributes attrs;
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int scr;
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int isfixed; /* is fixed geometry? */
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+ int depth; /* bit depth */
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int l, t; /* left and top offset */
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int gm; /* geometry mask */
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} XWindow;
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@@ -243,6 +245,7 @@ static char *usedfont = NULL;
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static double usedfontsize = 0;
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static double defaultfontsize = 0;
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+static char *opt_alpha = NULL;
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static char *opt_class = NULL;
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static char **opt_cmd = NULL;
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static char *opt_embed = NULL;
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@@ -752,7 +755,7 @@ xresize(int col, int row)
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XFreePixmap(xw.dpy, xw.buf);
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xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
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- DefaultDepth(xw.dpy, xw.scr));
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+ xw.depth);
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XftDrawChange(xw.draw, xw.buf);
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xclear(0, 0, win.w, win.h);
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@@ -812,6 +815,13 @@ xloadcols(void)
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else
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die("could not allocate color %d\n", i);
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}
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+
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+ /* set alpha value of bg color */
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+ if (opt_alpha)
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+ alpha = strtof(opt_alpha, NULL);
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+ dc.col[defaultbg].color.alpha = (unsigned short)(0xffff * alpha);
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+ dc.col[defaultbg].pixel &= 0x00FFFFFF;
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+ dc.col[defaultbg].pixel |= (unsigned char)(0xff * alpha) << 24;
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loaded = 1;
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}
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@@ -1134,11 +1144,23 @@ xinit(int cols, int rows)
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Window parent;
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pid_t thispid = getpid();
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XColor xmousefg, xmousebg;
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+ XWindowAttributes attr;
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+ XVisualInfo vis;
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if (!(xw.dpy = XOpenDisplay(NULL)))
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die("can't open display\n");
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xw.scr = XDefaultScreen(xw.dpy);
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- xw.vis = XDefaultVisual(xw.dpy, xw.scr);
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+
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+ if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0)))) {
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+ parent = XRootWindow(xw.dpy, xw.scr);
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+ xw.depth = 32;
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+ } else {
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+ XGetWindowAttributes(xw.dpy, parent, &attr);
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+ xw.depth = attr.depth;
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+ }
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+
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+ XMatchVisualInfo(xw.dpy, xw.scr, xw.depth, TrueColor, &vis);
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+ xw.vis = vis.visual;
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/* font */
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if (!FcInit())
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@@ -1147,8 +1169,11 @@ 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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+ xw.cmap = XCreateColormap(xw.dpy, parent, xw.vis, None);
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xloadcols();
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/* adjust fixed window geometry */
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@@ -1168,19 +1193,15 @@ xinit(int cols, int rows)
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| ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
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xw.attrs.colormap = xw.cmap;
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- if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
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- parent = XRootWindow(xw.dpy, xw.scr);
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xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
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- win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
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+ win.w, win.h, 0, xw.depth, InputOutput,
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xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
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| CWEventMask | CWColormap, &xw.attrs);
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memset(&gcvalues, 0, sizeof(gcvalues));
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gcvalues.graphics_exposures = False;
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- dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
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- &gcvalues);
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- xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
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- DefaultDepth(xw.dpy, xw.scr));
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+ xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h, xw.depth);
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+ dc.gc = XCreateGC(xw.dpy, xw.buf, GCGraphicsExposures, &gcvalues);
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XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
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XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
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@@ -1371,6 +1392,24 @@ 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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@@ -2038,6 +2077,9 @@ main(int argc, char *argv[])
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case 'a':
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allowaltscreen = 0;
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break;
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+ case 'A':
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+ opt_alpha = EARGF(usage());
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+ break;
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case 'c':
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opt_class = EARGF(usage());
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break;
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1
st.h
1
st.h
@ -137,5 +137,6 @@ 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, alpha_def;
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extern const int boxdraw, boxdraw_bold, boxdraw_braille;
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extern float alpha;
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22
x.c
22
x.c
@ -60,6 +60,7 @@ 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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@ -1176,6 +1177,9 @@ 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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/* colors */
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xw.cmap = XCreateColormap(xw.dpy, parent, xw.vis, None);
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xloadcols();
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@ -1406,6 +1410,24 @@ 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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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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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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