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From f4519f34fbdc1eaa2787396f76ce99743d8e2dfb Mon Sep 17 00:00:00 2001
From: Tharre <tharre3@gmail.com>
Date: Mon, 13 Jul 2015 18:32:13 +0200
Subject: [PATCH] Add transparency
---
config.def.h | 3 +++
config.mk | 2 +-
st.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++++++++--------
3 files changed, 57 insertions(+), 9 deletions(-)
diff --git a/config.def.h b/config.def.h
index e246e3c..1f8c524 100644
--- a/config.def.h
+++ b/config.def.h
@@ -96,6 +96,9 @@ static unsigned int defaultfg = 7;
static unsigned int defaultbg = 0;
static unsigned int defaultcs = 256;
+/* background opacity */
+static const int alpha = 0xed;
+
/*
* Colors used, when the specific fg == defaultfg. So in reverse mode this
* will reverse too. Another logic would only make the simple feature too
diff --git a/config.mk b/config.mk
index 67844dc..ce5753a 100644
--- a/config.mk
+++ b/config.mk
@@ -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} -lm -lrt -lX11 -lutil -lXext -lXft \
+LIBS = -L/usr/lib -lc -L${X11LIB} -lm -lrt -lX11 -lutil -lXext -lXft -lXrender \
`pkg-config --libs fontconfig` \
`pkg-config --libs freetype2`
diff --git a/st.c b/st.c
index 64e2cec..11025b2 100644
--- a/st.c
+++ b/st.c
@@ -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
/* macros */
#define MIN(a, b) ((a) < (b) ? (a) : (b))
@@ -84,6 +85,7 @@ char *argv0;
#define TRUERED(x) (((x) & 0xff0000) >> 8)
#define TRUEGREEN(x) (((x) & 0xff00))
#define TRUEBLUE(x) (((x) & 0xff) << 8)
+#define USE_ARGB (alpha != OPAQUE && opt_embed == NULL)
enum glyph_attribute {
@@ -266,6 +268,7 @@ 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 */
int cursor; /* cursor style */
} XWindow;
@@ -3102,8 +3105,7 @@ 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);
}
@@ -3157,6 +3159,14 @@ 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; //0xcccc;
+ dc.col[defaultbg].pixel &= 0x00111111;
+ dc.col[defaultbg].pixel |= alpha << 24; // 0xcc000000;
+ }
+
loaded = 1;
}
@@ -3415,7 +3425,38 @@ xinit(void)
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())
@@ -3425,7 +3466,10 @@ 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 */
@@ -3448,16 +3492,17 @@ xinit(void)
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,
- 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, &xw.attrs);
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);
--
2.4.5
|
