[wiki] [sites] st: add ARGB background patch || Eon S. Jeon

From: <git_AT_suckless.org>
Date: Thu, 13 Jun 2013 01:03:25 +0200

commit 30d83187aa3dcaefca5cb0dfc3396b3d7d088cfa
Author: Eon S. Jeon <esjeon_AT_live.com>
Date: Wed Jun 12 19:02:39 2013 -0400

    st: add ARGB background patch

diff --git a/st.suckless.org/patches/argbbg.md b/st.suckless.org/patches/argbbg.md
new file mode 100644
index 0000000..b30f5c6
--- /dev/null
+++ b/st.suckless.org/patches/argbbg.md
_AT_@ -0,0 +1,18 @@
+argbbg
+======
+
+## Description ##
+This patch allows users to change the opacity of the background.
+Note that **you need an X composite manager** to make this patch effective. (e.g. compton, xcompmgr)
+
+## Important Notes ##
+ - The alpha value affects the default background only.
+ - The color designated by `defaultbg` should not be used elsewhere.
+ - Embedding might fail after applying this patch.
+
+## Download ##
+ * [st-0.4.1-argbbg.diff](st-0.4.1-argbbg.diff)
+
+## Author ##
+ * Eon S. Jeon - esjeon_AT_lavabit.com
+
diff --git a/st.suckless.org/patches/st-0.4.1-argbbg.diff b/st.suckless.org/patches/st-0.4.1-argbbg.diff
new file mode 100644
index 0000000..fe6b47b
--- /dev/null
+++ b/st.suckless.org/patches/st-0.4.1-argbbg.diff
_AT_@ -0,0 +1,171 @@
+diff --git a/config.def.h b/config.def.h
+index d1c20bd..cc9f34d 100644
+--- a/config.def.h
++++ b/config.def.h
+_AT_@ -25,6 +25,8 @@ static char termname[] = "st-256color";
+
+ static unsigned int tabspaces = 8;
+
++/* background opacity */
++static const int alpha = 0xdd;
+
+ /* Terminal colors (16 first used in escape sequence) */
+ static const char *colorname[] = {
+_AT_@ -52,6 +54,7 @@ static const char *colorname[] = {
+
+ /* more colors can be added after 255 to use with DefaultXX */
+ "#cccccc",
++ "black",
+ };
+
+
+_AT_@ -60,7 +63,7 @@ static const char *colorname[] = {
+ * foreground, background, cursor
+ */
+ static unsigned int defaultfg = 7;
+-static unsigned int defaultbg = 0;
++static unsigned int defaultbg = 257;
+ static unsigned int defaultcs = 256;
+
+ /*
+diff --git a/config.mk b/config.mk
+index 9431de2..0b92bf2 100644
+--- a/config.mk
++++ b/config.mk
+_AT_@ -14,7 +14,7 @@ X11LIB = /usr/X11R6/lib
+ INCS = -I. -I/usr/include -I${X11INC} \
+ `pkg-config --cflags fontconfig` \
+ `pkg-config --cflags freetype2`
+-LIBS = -L/usr/lib -lc -L${X11LIB} -lX11 -lutil -lXext -lXft \
++LIBS = -L/usr/lib -lc -L${X11LIB} -lX11 -lutil -lXext -lXft -lXrender \
+ `pkg-config --libs fontconfig` \
+ `pkg-config --libs freetype2`
+
+diff --git a/st.c b/st.c
+index 686ed5d..de4d0f9 100644
+--- a/st.c
++++ b/st.c
+_AT_@ -60,6 +60,7 @@ char *argv0;
+ #define XK_ANY_MOD UINT_MAX
+ #define XK_NO_MOD 0
+ #define XK_SWITCH_MOD (1<<13)
++#define OPAQUE 0Xff
+
+ #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
+
+_AT_@ -74,6 +75,7 @@ char *argv0;
+ #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
+ #define IS_SET(flag) ((term.mode & (flag)) != 0)
+ #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
++#define USE_ARGB (alpha != OPAQUE && opt_embed == NULL)
+
+ #define VT102ID "[?6c"
+
+_AT_@ -215,6 +217,7 @@ typedef struct {
+ int w, h; /* window width and height */
+ int ch; /* char height */
+ int cw; /* char width */
++ int depth; /* bit depth */
+ char state; /* focus, redraw, visible */
+ } XWindow;
+
+_AT_@ -2335,8 +2338,7 @@ xresize(int col, int row) {
+ xw.th = MAX(1, row * xw.ch);
+
+ XFreePixmap(xw.dpy, xw.buf);
+- xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
+- DefaultDepth(xw.dpy, xw.scr));
++ xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h, xw.depth);
+ XftDrawChange(xw.draw, xw.buf);
+ xclear(0, 0, xw.w, xw.h);
+ }
+_AT_@ -2360,6 +2362,13 @@ xloadcols(void) {
+ }
+ }
+
++ /* set alpha value of bg color */
++ if (USE_ARGB) {
++ dc.col[defaultbg].color.alpha = (0xffff * alpha) / OPAQUE; //0xcccc;
++ dc.col[defaultbg].pixel &= 0x00111111;
++ dc.col[defaultbg].pixel |= alpha << 24; // 0xcc000000;
++ }
++
+ /* load colors [16-255] ; same colors as xterm */
+ for(i = 16, r = 0; r < 6; r++) {
+ for(g = 0; g < 6; g++) {
+_AT_@ -2603,7 +2612,38 @@ xinit(void) {
+ if(!(xw.dpy = XOpenDisplay(NULL)))
+ die("Can't open display
");
+ xw.scr = XDefaultScreen(xw.dpy);
+- xw.vis = XDefaultVisual(xw.dpy, xw.scr);
++ xw.depth = (USE_ARGB)? 32: XDefaultDepth(xw.dpy, xw.scr);
++ if (! USE_ARGB)
++ xw.vis = XDefaultVisual(xw.dpy, xw.scr);
++ else {
++ XVisualInfo *vis;
++ XRenderPictFormat *fmt;
++ int nvi;
++ int i;
++
++ XVisualInfo tpl = {
++ .screen = xw.scr,
++ .depth = 32,
++ .class = TrueColor
++ };
++
++ vis = XGetVisualInfo(xw.dpy, VisualScreenMask | VisualDepthMask | VisualClassMask, &tpl, &nvi);
++ xw.vis = NULL;
++ for(i = 0; i < nvi; i ++) {
++ fmt = XRenderFindVisualFormat(xw.dpy, vis[i].visual);
++ if (fmt->type == PictTypeDirect && fmt->direct.alphaMask) {
++ xw.vis = vis[i].visual;
++ break;
++ }
++ }
++
++ XFree(vis);
++
++ if (! xw.vis) {
++ fprintf(stderr, "Couldn't find ARGB visual.
");
++ exit(1);
++ }
++ }
+
+ /* font */
+ if(!FcInit())
+_AT_@ -2613,7 +2653,10 @@ xinit(void) {
+ xloadfonts(usedfont, 0);
+
+ /* colors */
+- xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
++ if (! USE_ARGB)
++ xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
++ else
++ xw.cmap = XCreateColormap(xw.dpy, XRootWindow(xw.dpy, xw.scr), xw.vis, None);
+ xloadcols();
+
+ /* adjust fixed window geometry */
+_AT_@ -2647,7 +2690,7 @@ xinit(void) {
+ parent = opt_embed ? strtol(opt_embed, NULL, 0) : \
+ XRootWindow(xw.dpy, xw.scr);
+ xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
+- xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
++ xw.w, xw.h, 0, xw.depth, InputOutput,
+ xw.vis,
+ CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
+ | CWColormap,
+_AT_@ -2655,10 +2698,11 @@ xinit(void) {
+
+ memset(&gcvalues, 0, sizeof(gcvalues));
+ gcvalues.graphics_exposures = False;
+- dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
++ xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h, xw.depth);
++ dc.gc = XCreateGC(xw.dpy,
++ (USE_ARGB)? xw.buf: parent,
++ GCGraphicsExposures,
+ &gcvalues);
+- xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
+- DefaultDepth(xw.dpy, xw.scr));
+ XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
+ XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
+
Received on Thu Jun 13 2013 - 01:03:25 CEST