mirror of
https://github.com/bakkeby/patches
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77 lines
2.5 KiB
Diff
77 lines
2.5 KiB
Diff
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From fe6553c3d6e7e93aa74242cda0c33e05571147aa Mon Sep 17 00:00:00 2001
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From: Sebastian Sareyko <sl@setq.dk>
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Date: Fri, 27 Sep 2019 12:32:41 +0200
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Subject: [PATCH] Sort screens by origin
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Doing a multi-head setup using other means than Xinerama may lead to
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XineramaQueryScreens() returning the screens in an order that does not
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actually represent the actual screen layout. This in turn may result
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in dwm using the "wrong" monitor in monitor related
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functions (focusmon(), tagmon(), applying rules, ...).
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This change sorts the list of unique screens by their origin to
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alleviate this problem.
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---
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dwm.c | 24 ++++++++++++++++++++++++
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1 file changed, 24 insertions(+)
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diff --git a/dwm.c b/dwm.c
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index 4465af1..3a60b0c 100644
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--- a/dwm.c
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+++ b/dwm.c
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@@ -56,6 +56,8 @@
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#define HEIGHT(X) ((X)->h + 2 * (X)->bw)
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#define TAGMASK ((1 << LENGTH(tags)) - 1)
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#define TEXTW(X) (drw_fontset_getwidth(drw, (X)) + lrpad)
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+#define RIGHTOF(a,b) (a.y_org > b.y_org) || \
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+ ((a.y_org == b.y_org) && (a.x_org > b.x_org))
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/* enums */
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enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
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@@ -205,6 +207,9 @@ static void setup(void);
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static void seturgent(Client *c, int urg);
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static void showhide(Client *c);
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static void sigchld(int unused);
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+#ifdef XINERAMA
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+static void sortscreens(XineramaScreenInfo *screens, int n);
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+#endif /* XINERAMA */
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static void spawn(const Arg *arg);
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static void tag(const Arg *arg);
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static void tagmon(const Arg *arg);
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@@ -1636,6 +1641,24 @@ sigchld(int unused)
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while (0 < waitpid(-1, NULL, WNOHANG));
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}
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+#ifdef XINERAMA
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+void
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+sortscreens(XineramaScreenInfo *screens, int n)
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+{
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+ int i, j;
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+ XineramaScreenInfo *screen = ecalloc(1, sizeof(XineramaScreenInfo));
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+
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+ for (i = 0; i < n; i++)
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+ for (j = i + 1; j < n; j++)
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+ if (RIGHTOF(screens[i], screens[j])) {
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+ memcpy(&screen[0], &screens[i], sizeof(XineramaScreenInfo));
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+ memcpy(&screens[i], &screens[j], sizeof(XineramaScreenInfo));
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+ memcpy(&screens[j], &screen[0], sizeof(XineramaScreenInfo));
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+ }
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+ XFree(screen);
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+}
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+#endif /* XINERAMA */
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+
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void
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spawn(const Arg *arg)
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{
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@@ -1868,6 +1891,7 @@ updategeom(void)
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memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
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XFree(info);
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nn = j;
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+ sortscreens(unique, nn);
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if (n <= nn) { /* new monitors available */
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for (i = 0; i < (nn - n); i++) {
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for (m = mons; m && m->next; m = m->next);
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--
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2.21.0
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