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-rw-r--r--dwm.c96
1 files changed, 94 insertions, 2 deletions
diff --git a/dwm.c b/dwm.c
index 40819b4..af3a16d 100644
--- a/dwm.c
+++ b/dwm.c
@@ -28,6 +28,8 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include <limits.h>
+#include <stdint.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <X11/cursorfont.h>
@@ -60,7 +62,7 @@
/* enums */
enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
enum { SchemeNorm, SchemeSel }; /* color schemes */
-enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
+enum { NetSupported, NetWMName, NetWMIcon, NetWMState, NetWMCheck,
NetWMFullscreen, NetWMSticky, NetActiveWindow, NetWMWindowType,
NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
@@ -93,6 +95,7 @@ struct Client {
int bw, oldbw;
unsigned int tags;
int isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen, issticky;
+ unsigned int icw, ich; Picture icon;
Client *next;
Client *snext;
Monitor *mon;
@@ -173,6 +176,7 @@ static void focusin(XEvent *e);
static void focusmon(const Arg *arg);
static void focusstack(const Arg *arg);
static Atom getatomprop(Client *c, Atom prop);
+static Picture geticonprop(Window w, unsigned int *icw, unsigned int *ich);
static int getrootptr(int *x, int *y);
static long getstate(Window w);
static int gettextprop(Window w, Atom atom, char *text, unsigned int size);
@@ -223,6 +227,7 @@ static void togglesticky(const Arg *arg);
static void togglefullscr(const Arg *arg);
static void toggletag(const Arg *arg);
static void toggleview(const Arg *arg);
+static void freeicon(Client *c);
static void unfocus(Client *c, int setfocus);
static void unmanage(Client *c, int destroyed);
static void unmapnotify(XEvent *e);
@@ -234,6 +239,7 @@ static void updatenumlockmask(void);
static void updatesizehints(Client *c);
static void updatestatus(void);
static void updatetitle(Client *c);
+static void updateicon(Client *c);
static void updatewindowtype(Client *c);
static void updatewmhints(Client *c);
static void view(const Arg *arg);
@@ -789,7 +795,8 @@ drawbar(Monitor *m)
if ((w = m->ww - tw - x) > bh) {
if (m->sel) {
drw_setscheme(drw, scheme[m == selmon ? SchemeSel : SchemeNorm]);
- drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
+ drw_text(drw, x, 0, w, bh, lrpad / 2 + (m->sel->icon ? m->sel->icw + ICONSPACING : 0), m->sel->name, 0);
+ if (m->sel->icon) drw_pic(drw, x + lrpad / 2, (bh - m->sel->ich) / 2, m->sel->icw, m->sel->ich, m->sel->icon);
if (m->sel->isfloating)
drw_rect(drw, x + boxs, boxs, boxw, boxw, m->sel->isfixed, 0);
} else {
@@ -933,6 +940,67 @@ getatomprop(Client *c, Atom prop)
return atom;
}
+static uint32_t prealpha(uint32_t p) {
+ uint8_t a = p >> 24u;
+ uint32_t rb = (a * (p & 0xFF00FFu)) >> 8u;
+ uint32_t g = (a * (p & 0x00FF00u)) >> 8u;
+ return (rb & 0xFF00FFu) | (g & 0x00FF00u) | (a << 24u);
+}
+
+Picture
+geticonprop(Window win, unsigned int *picw, unsigned int *pich)
+{
+ int format;
+ unsigned long n, extra, *p = NULL;
+ Atom real;
+
+ if (XGetWindowProperty(dpy, win, netatom[NetWMIcon], 0L, LONG_MAX, False, AnyPropertyType,
+ &real, &format, &n, &extra, (unsigned char **)&p) != Success)
+ return None;
+ if (n == 0 || format != 32) { XFree(p); return None; }
+
+ unsigned long *bstp = NULL;
+ uint32_t w, h, sz;
+ {
+ unsigned long *i; const unsigned long *end = p + n;
+ uint32_t bstd = UINT32_MAX, d, m;
+ for (i = p; i < end - 1; i += sz) {
+ if ((w = *i++) >= 16384 || (h = *i++) >= 16384) { XFree(p); return None; }
+ if ((sz = w * h) > end - i) break;
+ if ((m = w > h ? w : h) >= ICONSIZE && (d = m - ICONSIZE) < bstd) { bstd = d; bstp = i; }
+ }
+ if (!bstp) {
+ for (i = p; i < end - 1; i += sz) {
+ if ((w = *i++) >= 16384 || (h = *i++) >= 16384) { XFree(p); return None; }
+ if ((sz = w * h) > end - i) break;
+ if ((d = ICONSIZE - (w > h ? w : h)) < bstd) { bstd = d; bstp = i; }
+ }
+ }
+ if (!bstp) { XFree(p); return None; }
+ }
+
+ if ((w = *(bstp - 2)) == 0 || (h = *(bstp - 1)) == 0) { XFree(p); return None; }
+
+ uint32_t icw, ich;
+ if (w <= h) {
+ ich = ICONSIZE; icw = w * ICONSIZE / h;
+ if (icw == 0) icw = 1;
+ }
+ else {
+ icw = ICONSIZE; ich = h * ICONSIZE / w;
+ if (ich == 0) ich = 1;
+ }
+ *picw = icw; *pich = ich;
+
+ uint32_t i, *bstp32 = (uint32_t *)bstp;
+ for (sz = w * h, i = 0; i < sz; ++i) bstp32[i] = prealpha(bstp[i]);
+
+ Picture ret = drw_picture_create_resized(drw, (char *)bstp, w, h, icw, ich);
+ XFree(p);
+
+ return ret;
+}
+
int
getrootptr(int *x, int *y)
{
@@ -1100,6 +1168,7 @@ manage(Window w, XWindowAttributes *wa)
c->h = c->oldh = wa->height;
c->oldbw = wa->border_width;
+ updateicon(c);
updatetitle(c);
if (XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
c->mon = t->mon;
@@ -1353,6 +1422,11 @@ propertynotify(XEvent *e)
if (c == c->mon->sel)
drawbar(c->mon);
}
+ else if (ev->atom == netatom[NetWMIcon]) {
+ updateicon(c);
+ if (c == c->mon->sel)
+ drawbar(c->mon);
+ }
if (ev->atom == netatom[NetWMWindowType])
updatewindowtype(c);
}
@@ -1735,6 +1809,7 @@ setup(void)
netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
+ netatom[NetWMIcon] = XInternAtom(dpy, "_NET_WM_ICON", False);
netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
netatom[NetWMCheck] = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);
netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
@@ -1996,6 +2071,15 @@ toggleview(const Arg *arg)
}
void
+freeicon(Client *c)
+{
+ if (c->icon) {
+ XRenderFreePicture(dpy, c->icon);
+ c->icon = None;
+ }
+}
+
+void
unfocus(Client *c, int setfocus)
{
if (!c)
@@ -2016,6 +2100,7 @@ unmanage(Client *c, int destroyed)
detach(c);
detachstack(c);
+ freeicon(c);
if (!destroyed) {
wc.border_width = c->oldbw;
XGrabServer(dpy); /* avoid race conditions */
@@ -2255,6 +2340,13 @@ updatetitle(Client *c)
}
void
+updateicon(Client *c)
+{
+ freeicon(c);
+ c->icon = geticonprop(c->win, &c->icw, &c->ich);
+}
+
+void
updatewindowtype(Client *c)
{
Atom state = getatomprop(c, netatom[NetWMState]);
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-08 21:32:18 +0000