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-rw-r--r--patches/st-alpha-0.8.1.diff183
1 files changed, 183 insertions, 0 deletions
diff --git a/patches/st-alpha-0.8.1.diff b/patches/st-alpha-0.8.1.diff
new file mode 100644
index 0000000..9dd26c3
--- /dev/null
+++ b/patches/st-alpha-0.8.1.diff
@@ -0,0 +1,183 @@
+diff --git a/config.def.h b/config.def.h
+index feec7e2..e373018 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -82,6 +82,9 @@ char *termname = "st-256color";
+ */
+ unsigned int tabspaces = 8;
+
++/* bg opacity */
++unsigned int alpha = 0xcd;
++
+ /* Terminal colors (16 first used in escape sequence) */
+ static const char *colorname[] = {
+ /* 8 normal colors */
+diff --git a/config.mk b/config.mk
+index 039c42c..3b00d7e 100644
+--- a/config.mk
++++ b/config.mk
+@@ -14,7 +14,7 @@ X11LIB = /usr/X11R6/lib
+ INCS = -I$(X11INC) \
+ `pkg-config --cflags fontconfig` \
+ `pkg-config --cflags freetype2`
+-LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft \
++LIBS = -L${X11LIB} -lm -lrt -lX11 -lutil -lXft -lXrender \
+ `pkg-config --libs fontconfig` \
+ `pkg-config --libs freetype2`
+
+diff --git a/st.h b/st.h
+index cdd25ae..850c5f0 100644
+--- a/st.h
++++ b/st.h
+@@ -134,6 +134,7 @@ extern char *worddelimiters;
+ extern int allowaltscreen;
+ extern char *termname;
+ extern unsigned int tabspaces;
++extern unsigned int alpha;
+ extern unsigned int defaultfg;
+ extern unsigned int defaultbg;
+ extern MouseKey mkeys[];
+diff --git a/win.h b/win.h
+index 31f327d..d277477 100644
+--- a/win.h
++++ b/win.h
+@@ -23,6 +23,10 @@ enum win_mode {
+ |MODE_MOUSEMANY,
+ };
+
++/* alpha */
++#define OPAQUE 0Xff
++#define USE_ARGB (alpha != OPAQUE && opt_embed == NULL)
++
+ void xbell(void);
+ void xclipcopy(void);
+ void xdrawcursor(int, int, Glyph, int, int, Glyph);
+diff --git a/x.c b/x.c
+index f4a6be7..840d2fa 100644
+--- a/x.c
++++ b/x.c
+@@ -99,6 +99,7 @@ typedef struct {
+ XSetWindowAttributes attrs;
+ int scr;
+ int isfixed; /* is fixed geometry? */
++ int depth; /* bit depth */
+ int l, t; /* left and top offset */
+ int gm; /* geometry mask */
+ } XWindow;
+@@ -698,7 +699,7 @@ xresize(int col, int row)
+
+ XFreePixmap(xw.dpy, xw.buf);
+ xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
+- DefaultDepth(xw.dpy, xw.scr));
++ xw.depth);
+ XftDrawChange(xw.draw, xw.buf);
+ xclear(0, 0, win.w, win.h);
+
+@@ -758,6 +759,13 @@ xloadcols(void)
+ else
+ die("Could not allocate color %d\n", i);
+ }
++
++ /* set alpha value of bg color */
++ if (USE_ARGB) {
++ dc.col[defaultbg].color.alpha = (0xffff * alpha) / OPAQUE;
++ dc.col[defaultbg].pixel &= 0x00111111;
++ dc.col[defaultbg].pixel |= alpha << 24;
++ }
+ loaded = 1;
+ }
+
+@@ -779,6 +787,17 @@ xsetcolorname(int x, const char *name)
+ return 0;
+ }
+
++void
++xtermclear(int col1, int row1, int col2, int row2)
++{
++ XftDrawRect(xw.draw,
++ &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
++ borderpx + col1 * win.cw,
++ borderpx + row1 * win.ch,
++ (col2-col1+1) * win.cw,
++ (row2-row1+1) * win.ch);
++}
++
+ /*
+ * Absolute coordinates.
+ */
+@@ -1018,7 +1037,40 @@ xinit(int cols, int rows)
+ if (!(xw.dpy = XOpenDisplay(NULL)))
+ die("Can't open display\n");
+ 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.\n");
++ exit(1);
++ }
++ }
+
+ /* font */
+ if (!FcInit())
+@@ -1028,7 +1080,11 @@ xinit(int cols, int rows)
+ 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 */
+@@ -1051,16 +1107,15 @@ xinit(int cols, int rows)
+ if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
+ parent = XRootWindow(xw.dpy, xw.scr);
+ xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
+- win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
++ win.w, win.h, 0, xw.depth, InputOutput,
+ xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
+ | CWEventMask | CWColormap, &xw.attrs);
+
+ memset(&gcvalues, 0, sizeof(gcvalues));
+ gcvalues.graphics_exposures = False;
+- dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
+- &gcvalues);
+- xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
+- DefaultDepth(xw.dpy, xw.scr));
++ xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h, xw.depth);
++ dc.gc = XCreateGC(xw.dpy, (USE_ARGB) ? xw.buf: parent,
++ GCGraphicsExposures, &gcvalues);
+ XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
+ XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
+