From f699934b8c8a9c15988ad359bf8fedd6c55abd53 Mon Sep 17 00:00:00 2001
From: Thomas Oltmann <thomas.oltmann.hhg@gmail.com>
Date: Wed, 13 Jun 2018 19:46:26 +0200
Subject: [PATCH] Allow dwm to have translucent bars, while keeping all the
text on it opaque, just like the alpha-patch for st. Updated for b69c870.
---
config.def.h | 7 ++++++
config.mk | 2 +-
drw.c | 26 ++++++++++++-----------
drw.h | 9 +++++---
dwm.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++------
5 files changed, 82 insertions(+), 22 deletions(-)
diff --git a/config.def.h b/config.def.h
index 1c0b587..4f68fe8 100644
--- a/config.def.h
+++ b/config.def.h
@@ -12,11 +12,18 @@ static const char col_gray2[] = "#444444";
static const char col_gray3[] = "#bbbbbb";
static const char col_gray4[] = "#eeeeee";
static const char col_cyan[] = "#005577";
+static const unsigned int baralpha = 0xd0;
+static const unsigned int borderalpha = OPAQUE;
static const char *colors[][3] = {
/* fg bg border */
[SchemeNorm] = { col_gray3, col_gray1, col_gray2 },
[SchemeSel] = { col_gray4, col_cyan, col_cyan },
};
+static const unsigned int alphas[][3] = {
+ /* fg bg border */
+ [SchemeNorm] = { OPAQUE, baralpha, borderalpha },
+ [SchemeSel] = { OPAQUE, baralpha, borderalpha },
+};
/* tagging */
static const char *tags[] = { "1", "2", "3", "4", "5", "6", "7", "8", "9" };
diff --git a/config.mk b/config.mk
index 25e2685..bef8de0 100644
--- a/config.mk
+++ b/config.mk
@@ -22,7 +22,7 @@ FREETYPEINC = /usr/include/freetype2
# includes and libs
INCS = -I${X11INC} -I${FREETYPEINC}
-LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS}
+LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS} -lXrender
# flags
CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_POSIX_C_SOURCE=2 -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}
diff --git a/drw.c b/drw.c
index c638323..77fc113 100644
--- a/drw.c
+++ b/drw.c
@@ -61,7 +61,7 @@ utf8decode(const char *c, long *u, size_t clen)
}
Drw *
-drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h)
+drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h, Visual *visual, unsigned int depth, Colormap cmap)
{
Drw *drw = ecalloc(1, sizeof(Drw));
@@ -70,8 +70,11 @@ drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h
drw->root = root;
drw->w = w;
drw->h = h;
- drw->drawable = XCreatePixmap(dpy, root, w, h, DefaultDepth(dpy, screen));
- drw->gc = XCreateGC(dpy, root, 0, NULL);
+ drw->visual = visual;
+ drw->depth = depth;
+ drw->cmap = cmap;
+ drw->drawable = XCreatePixmap(dpy, root, w, h, depth);
+ drw->gc = XCreateGC(dpy, drw->drawable, 0, NULL);
XSetLineAttributes(dpy, drw->gc, 1, LineSolid, CapButt, JoinMiter);
return drw;
@@ -87,7 +90,7 @@ drw_resize(Drw *drw, unsigned int w, unsigned int h)
drw->h = h;
if (drw->drawable)
XFreePixmap(drw->dpy, drw->drawable);
- drw->drawable = XCreatePixmap(drw->dpy, drw->root, w, h, DefaultDepth(drw->dpy, drw->screen));
+ drw->drawable = XCreatePixmap(drw->dpy, drw->root, w, h, drw->depth);
}
void
@@ -180,21 +183,22 @@ drw_fontset_free(Fnt *font)
}
void
-drw_clr_create(Drw *drw, Clr *dest, const char *clrname)
+drw_clr_create(Drw *drw, Clr *dest, const char *clrname, unsigned int alpha)
{
if (!drw || !dest || !clrname)
return;
- if (!XftColorAllocName(drw->dpy, DefaultVisual(drw->dpy, drw->screen),
- DefaultColormap(drw->dpy, drw->screen),
+ if (!XftColorAllocName(drw->dpy, drw->visual, drw->cmap,
clrname, dest))
die("error, cannot allocate color '%s'", clrname);
+
+ dest->pixel = (dest->pixel & 0x00ffffffU) | (alpha << 24);
}
/* Wrapper to create color schemes. The caller has to call free(3) on the
* returned color scheme when done using it. */
Clr *
-drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount)
+drw_scm_create(Drw *drw, const char *clrnames[], const unsigned int alphas[], size_t clrcount)
{
size_t i;
Clr *ret;
@@ -204,7 +208,7 @@ drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount)
return NULL;
for (i = 0; i < clrcount; i++)
- drw_clr_create(drw, &ret[i], clrnames[i]);
+ drw_clr_create(drw, &ret[i], clrnames[i], alphas[i]);
return ret;
}
@@ -260,9 +264,7 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lp
} else {
XSetForeground(drw->dpy, drw->gc, drw->scheme[invert ? ColFg : ColBg].pixel);
XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
- d = XftDrawCreate(drw->dpy, drw->drawable,
- DefaultVisual(drw->dpy, drw->screen),
- DefaultColormap(drw->dpy, drw->screen));
+ d = XftDrawCreate(drw->dpy, drw->drawable, drw->visual, drw->cmap);
x += lpad;
w -= lpad;
}
diff --git a/drw.h b/drw.h
index 4bcd5ad..a56f523 100644
--- a/drw.h
+++ b/drw.h
@@ -20,6 +20,9 @@ typedef struct {
Display *dpy;
int screen;
Window root;
+ Visual *visual;
+ unsigned int depth;
+ Colormap cmap;
Drawable drawable;
GC gc;
Clr *scheme;
@@ -27,7 +30,7 @@ typedef struct {
} Drw;
/* Drawable abstraction */
-Drw *drw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h);
+Drw *drw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h, Visual *visual, unsigned int depth, Colormap cmap);
void drw_resize(Drw *drw, unsigned int w, unsigned int h);
void drw_free(Drw *drw);
@@ -38,8 +41,8 @@ unsigned int drw_fontset_getwidth(Drw *drw, const char *text);
void drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w, unsigned int *h);
/* Colorscheme abstraction */
-void drw_clr_create(Drw *drw, Clr *dest, const char *clrname);
-Clr *drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount);
+void drw_clr_create(Drw *drw, Clr *dest, const char *clrname, unsigned int alpha);
+Clr *drw_scm_create(Drw *drw, const char *clrnames[], const unsigned int alphas[], size_t clrcount);
/* Cursor abstraction */
Cur *drw_cur_create(Drw *drw, int shape);
diff --git a/dwm.c b/dwm.c
index 4465af1..20f8309 100644
--- a/dwm.c
+++ b/dwm.c
@@ -57,6 +57,8 @@
#define TAGMASK ((1 << LENGTH(tags)) - 1)
#define TEXTW(X) (drw_fontset_getwidth(drw, (X)) + lrpad)
+#define OPAQUE 0xffU
+
/* enums */
enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
enum { SchemeNorm, SchemeSel }; /* color schemes */
@@ -232,6 +234,7 @@ static Monitor *wintomon(Window w);
static int xerror(Display *dpy, XErrorEvent *ee);
static int xerrordummy(Display *dpy, XErrorEvent *ee);
static int xerrorstart(Display *dpy, XErrorEvent *ee);
+static void xinitvisual();
static void zoom(const Arg *arg);
/* variables */
@@ -268,6 +271,11 @@ static Drw *drw;
static Monitor *mons, *selmon;
static Window root, wmcheckwin;
+static int useargb = 0;
+static Visual *visual;
+static int depth;
+static Colormap cmap;
+
/* configuration, allows nested code to access above variables */
#include "config.h"
@@ -1541,7 +1549,8 @@ setup(void)
sw = DisplayWidth(dpy, screen);
sh = DisplayHeight(dpy, screen);
root = RootWindow(dpy, screen);
- drw = drw_create(dpy, screen, root, sw, sh);
+ xinitvisual();
+ drw = drw_create(dpy, screen, root, sw, sh, visual, depth, cmap);
if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
die("no fonts could be loaded.");
lrpad = drw->fonts->h;
@@ -1569,7 +1578,7 @@ setup(void)
/* init appearance */
scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
for (i = 0; i < LENGTH(colors); i++)
- scheme[i] = drw_scm_create(drw, colors[i], 3);
+ scheme[i] = drw_scm_create(drw, colors[i], alphas[i], 3);
/* init bars */
updatebars();
updatestatus();
@@ -1804,16 +1813,18 @@ updatebars(void)
Monitor *m;
XSetWindowAttributes wa = {
.override_redirect = True,
- .background_pixmap = ParentRelative,
+ .background_pixel = 0,
+ .border_pixel = 0,
+ .colormap = cmap,
.event_mask = ButtonPressMask|ExposureMask
};
XClassHint ch = {"dwm", "dwm"};
for (m = mons; m; m = m->next) {
if (m->barwin)
continue;
- m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
- CopyFromParent, DefaultVisual(dpy, screen),
- CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
+ m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, depth,
+ InputOutput, visual,
+ CWOverrideRedirect|CWBackPixel|CWBorderPixel|CWColormap|CWEventMask, &wa);
XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
XMapRaised(dpy, m->barwin);
XSetClassHint(dpy, m->barwin, &ch);
@@ -2110,6 +2121,43 @@ xerrorstart(Display *dpy, XErrorEvent *ee)
return -1;
}
+void
+xinitvisual()
+{
+ XVisualInfo *infos;
+ XRenderPictFormat *fmt;
+ int nitems;
+ int i;
+
+ XVisualInfo tpl = {
+ .screen = screen,
+ .depth = 32,
+ .class = TrueColor
+ };
+ long masks = VisualScreenMask | VisualDepthMask | VisualClassMask;
+
+ infos = XGetVisualInfo(dpy, masks, &tpl, &nitems);
+ visual = NULL;
+ for(i = 0; i < nitems; i ++) {
+ fmt = XRenderFindVisualFormat(dpy, infos[i].visual);
+ if (fmt->type == PictTypeDirect && fmt->direct.alphaMask) {
+ visual = infos[i].visual;
+ depth = infos[i].depth;
+ cmap = XCreateColormap(dpy, root, visual, AllocNone);
+ useargb = 1;
+ break;
+ }
+ }
+
+ XFree(infos);
+
+ if (! visual) {
+ visual = DefaultVisual(dpy, screen);
+ depth = DefaultDepth(dpy, screen);
+ cmap = DefaultColormap(dpy, screen);
+ }
+}
+
void
zoom(const Arg *arg)
{
--
2.17.0
