dwl-patches/swapandfocusdir/swapandfocusdir.patch
wochap 052a7fd7b0
remove swapandfocusdir from stale folder
export swapandfocusdir with `git format-patch`
2024-03-08 13:29:29 -05:00

246 lines
6.7 KiB
Diff

From d224594e8f077ac49a1369670f6ff6a5d27ec75a Mon Sep 17 00:00:00 2001
From: wochap <gean.marroquin@gmail.com>
Date: Tue, 5 Mar 2024 23:50:01 -0500
Subject: [PATCH] implement swap and focus direction functions
you should expect the same behavior as in river wm,
swap only works on tiling windows
focus works on tiling and floating windows
---
Makefile | 2 +-
config.def.h | 8 +++
dwl.c | 163 +++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 172 insertions(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
index 6cde460..22f4372 100644
--- a/Makefile
+++ b/Makefile
@@ -11,7 +11,7 @@ DWLDEVCFLAGS = -g -pedantic -Wall -Wextra -Wdeclaration-after-statement -Wno-unu
# CFLAGS / LDFLAGS
PKGS = wlroots wayland-server xkbcommon libinput $(XLIBS)
DWLCFLAGS = `$(PKG_CONFIG) --cflags $(PKGS)` $(DWLCPPFLAGS) $(DWLDEVCFLAGS) $(CFLAGS)
-LDLIBS = `$(PKG_CONFIG) --libs $(PKGS)` $(LIBS)
+LDLIBS = `$(PKG_CONFIG) --libs $(PKGS)` -lm $(LIBS)
all: dwl
dwl: dwl.o util.o
diff --git a/config.def.h b/config.def.h
index db0babc..b584f3e 100644
--- a/config.def.h
+++ b/config.def.h
@@ -122,6 +122,14 @@ static const Key keys[] = {
{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_Return, spawn, {.v = termcmd} },
{ MODKEY, XKB_KEY_j, focusstack, {.i = +1} },
{ MODKEY, XKB_KEY_k, focusstack, {.i = -1} },
+ { MODKEY|WLR_MODIFIER_CTRL, XKB_KEY_Left, focusdir, {.ui = 0} },
+ { MODKEY|WLR_MODIFIER_CTRL, XKB_KEY_Right, focusdir, {.ui = 1} },
+ { MODKEY|WLR_MODIFIER_CTRL, XKB_KEY_Up, focusdir, {.ui = 2} },
+ { MODKEY|WLR_MODIFIER_CTRL, XKB_KEY_Down, focusdir, {.ui = 3} },
+ { MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_Left, swapdir, {.ui = 0} },
+ { MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_Right, swapdir, {.ui = 1} },
+ { MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_Up, swapdir, {.ui = 2} },
+ { MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_Down, swapdir, {.ui = 3} },
{ MODKEY, XKB_KEY_i, incnmaster, {.i = +1} },
{ MODKEY, XKB_KEY_d, incnmaster, {.i = -1} },
{ MODKEY, XKB_KEY_h, setmfact, {.f = -0.05} },
diff --git a/dwl.c b/dwl.c
index ef27a1d..8d3540e 100644
--- a/dwl.c
+++ b/dwl.c
@@ -4,6 +4,7 @@
#include <getopt.h>
#include <libinput.h>
#include <linux/input-event-codes.h>
+#include <math.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
@@ -226,6 +227,11 @@ typedef struct {
struct wl_listener destroy;
} SessionLock;
+typedef struct {
+ int x;
+ int y;
+} Vector;
+
/* function declarations */
static void applybounds(Client *c, struct wlr_box *bbox);
static void applyrules(Client *c);
@@ -264,6 +270,8 @@ static Monitor *dirtomon(enum wlr_direction dir);
static void focusclient(Client *c, int lift);
static void focusmon(const Arg *arg);
static void focusstack(const Arg *arg);
+static void focusdir(const Arg *arg);
+static void swapdir(const Arg *arg);
static Client *focustop(Monitor *m);
static void fullscreennotify(struct wl_listener *listener, void *data);
static void handlesig(int signo);
@@ -1282,6 +1290,161 @@ focusstack(const Arg *arg)
focusclient(c, 1);
}
+Vector
+position_of_box(const struct wlr_box *box)
+{
+ return (Vector){
+ .x = box->x + box->width / 2,
+ .y = box->y + box->height / 2,
+ };
+}
+
+Vector
+diff_of_vectors(Vector *a, Vector *b)
+{
+ return (Vector){
+ .x = b->x - a->x,
+ .y = b->y - a->y,
+ };
+}
+
+const char *
+direction_of_vector(Vector *vector)
+{
+ // A zero length vector has no direction
+ if (vector->x == 0 && vector->y == 0) return "";
+
+ if (abs(vector->y) > abs(vector->x)) {
+ // Careful: We are operating in a Y-inverted coordinate system.
+ return (vector->y > 0) ? "bottom" : "top";
+ } else {
+ return (vector->x > 0) ? "right" : "left";
+ }
+}
+
+uint32_t
+vector_length(Vector *vector)
+{
+ // Euclidean distance formula
+ return (uint32_t)sqrt(vector->x * vector->x + vector->y * vector->y);
+}
+
+// Spatial direction, based on focused client position.
+Client *
+client_in_direction(const char *direction, const int *skipfloat)
+{
+ Client *cfocused = focustop(selmon);
+ Vector cfocusedposition = position_of_box(&cfocused->geom);
+ Client *ctarget = NULL;
+ double targetdistance = INFINITY;
+ Client *c;
+
+ if (!cfocused || cfocused->isfullscreen || (skipfloat && cfocused->isfloating))
+ return NULL;
+
+ wl_list_for_each(c, &clients, link) {
+ Vector cposition;
+ Vector positiondiff;
+ uint32_t distance;
+
+ if (c == cfocused)
+ continue;
+
+ if (skipfloat && c->isfloating)
+ continue;
+
+ if (!VISIBLEON(c, selmon))
+ continue;
+
+ cposition = position_of_box(&c->geom);
+ positiondiff = diff_of_vectors(&cfocusedposition, &cposition);
+
+ if (strcmp(direction, direction_of_vector(&positiondiff)) != 0)
+ continue;
+
+ distance = vector_length(&positiondiff);
+
+ if (distance < targetdistance) {
+ ctarget = c;
+ targetdistance = distance;
+ }
+ }
+
+ return ctarget;
+}
+
+void
+focusdir(const Arg *arg)
+{
+ Client *c = NULL;
+
+ if (arg->ui == 0)
+ c = client_in_direction("left", (int *)0);
+ if (arg->ui == 1)
+ c = client_in_direction("right", (int *)0);
+ if (arg->ui == 2)
+ c = client_in_direction("top", (int *)0);
+ if (arg->ui == 3)
+ c = client_in_direction("bottom", (int *)0);
+
+ if (c != NULL)
+ focusclient(c, 1);
+}
+
+void
+wl_list_swap(struct wl_list *list1, struct wl_list *list2)
+{
+ struct wl_list *prev1, *next1, *prev2, *next2;
+ struct wl_list temp;
+
+ if (list1 == list2) {
+ // No need to swap the same list
+ return;
+ }
+
+ // Get the lists before and after list1
+ prev1 = list1->prev;
+ next1 = list1->next;
+
+ // Get the lists before and after list2
+ prev2 = list2->prev;
+ next2 = list2->next;
+
+ // Update the next and previous pointers of adjacent lists
+ prev1->next = list2;
+ next1->prev = list2;
+ prev2->next = list1;
+ next2->prev = list1;
+
+ // Swap the next and previous pointers of the lists to actually swap them
+ temp = *list1;
+ *list1 = *list2;
+ *list2 = temp;
+}
+
+void
+swapdir(const Arg *arg)
+{
+ Client *c = NULL;
+ Client *cfocused;
+
+ if (arg->ui == 0)
+ c = client_in_direction("left", (int *)1);
+ if (arg->ui == 1)
+ c = client_in_direction("right", (int *)1);
+ if (arg->ui == 2)
+ c = client_in_direction("top", (int *)1);
+ if (arg->ui == 3)
+ c = client_in_direction("bottom", (int *)1);
+
+ if (c == NULL)
+ return;
+
+ cfocused = focustop(selmon);
+ wl_list_swap(&cfocused->link, &c->link);
+ arrange(selmon);
+}
+
/* We probably should change the name of this, it sounds like
* will focus the topmost client of this mon, when actually will
* only return that client */
--
2.42.0