From 0e07ba135b4ac4585bbc4afe4f0c1d88b5742439 Mon Sep 17 00:00:00 2001
From: Zedhugh Chen <zedhugh@gmail.com>
Date: Wed, 4 Feb 2026 12:13:19 +0800
Subject: [PATCH] =?UTF-8?q?=E6=94=AF=E6=8C=81=E7=AA=97=E5=8F=A3=E6=9C=80?=
 =?UTF-8?q?=E5=A4=A7=E5=8C=96=E6=93=8D=E4=BD=9C?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/action.c         |  6 ++++++
 src/action.h         |  1 +
 src/atoms-list.txt   |  2 ++
 src/client.c         | 27 +++++++++++++++++++++++++++
 src/default_config.h |  1 +
 5 files changed, 37 insertions(+)

diff --git a/src/action.c b/src/action.c
index b44695e..621b59f 100644
--- a/src/action.c
+++ b/src/action.c
@@ -87,3 +87,9 @@ void toggle_client_fullscreen(const user_action_arg_t *arg) {
 
   client_set_fullscreen(wm.client_focused, !wm.client_focused->fullscreen);
 }
+
+void toggle_client_maximize(const user_action_arg_t *arg) {
+  if (!wm.client_focused) return;
+
+  client_set_maximize(wm.client_focused, !wm.client_focused->maximize);
+}
diff --git a/src/action.h b/src/action.h
index 80670dd..1b4adb3 100644
--- a/src/action.h
+++ b/src/action.h
@@ -57,3 +57,4 @@ void quit(const user_action_arg_t *arg);
 void raise_or_run(const user_action_arg_t *arg);
 void toggle_client_floating(const user_action_arg_t *arg);
 void toggle_client_fullscreen(const user_action_arg_t *arg);
+void toggle_client_maximize(const user_action_arg_t *arg);
diff --git a/src/atoms-list.txt b/src/atoms-list.txt
index 31b1a53..1875eb9 100644
--- a/src/atoms-list.txt
+++ b/src/atoms-list.txt
@@ -14,6 +14,8 @@ _NET_WM_DESKTOP
 _NET_WM_NAME
 _NET_WM_STATE
 _NET_WM_STATE_FULLSCREEN
+_NET_WM_STATE_MAXIMIZED_HORZ
+_NET_WM_STATE_MAXIMIZED_VERT
 _NET_WM_WINDOW_TYPE
 _NET_WM_WINDOW_TYPE_DIALOG
 _NET_SUPPORTED
diff --git a/src/client.c b/src/client.c
index 7abb8ff..d45b24d 100644
--- a/src/client.c
+++ b/src/client.c
@@ -434,6 +434,33 @@ void client_set_fullscreen(client_t *client, bool fullscreen) {
   client_focus(client);
 }
 
+void client_set_maximize(client_t *client, bool maximize) {
+  if (client->maximize == maximize) return;
+
+  client->maximize = maximize;
+  if (maximize) {
+    xcb_atom_t max_atoms[] = {
+      _NET_WM_STATE_MAXIMIZED_HORZ,
+      _NET_WM_STATE_MAXIMIZED_VERT,
+    };
+    xcb_change_property(wm.xcb_conn, XCB_PROP_MODE_REPLACE, client->window,
+                        _NET_WM_STATE, XCB_ATOM_ATOM, 32, countof(max_atoms),
+                        max_atoms);
+    client->old_border_width = client->border_width;
+    if (client->floating) client->old_geometry = client->geometry;
+    client_change_border_width(client, 0);
+    client_apply_geometry(client, client->monitor->workarea);
+    client_stack_raise(client);
+  } else {
+    xcb_change_property(wm.xcb_conn, XCB_PROP_MODE_REPLACE, client->window,
+                        _NET_WM_STATE, XCB_ATOM_ATOM, 32, 0, 0);
+    client_change_border_width(client, client->old_border_width);
+    client_apply_geometry(client, client->old_geometry);
+  }
+  monitor_arrange(client->monitor);
+  client_focus(client);
+}
+
 static void update_client_list(void) {
   xcb_connection_t *conn = wm.xcb_conn;
   xcb_window_t root = wm.screen->root;
diff --git a/src/default_config.h b/src/default_config.h
index 711850a..a2230d7 100644
--- a/src/default_config.h
+++ b/src/default_config.h
@@ -89,6 +89,7 @@ static const keyboard_t key_list[] = {
 
   {modifier_super | modifier_control, XK_space, toggle_client_floating, {0}},
   {modifier_super, XK_f, toggle_client_fullscreen, {0}},
+  {modifier_super, XK_m, toggle_client_maximize, {0}},
 };
 
 static const layout_t layout_list[] = {