添加快捷键设置

src/action.h

@@ -0,0 +1,6 @@
+#pragma once
+
+#include "types.h"
+
+void spawn(const user_action_arg_t *arg);
+void quit(const user_action_arg_t *arg);

src/config.h

@@ -1,11 +1,13 @@
 #pragma once
 
+#include <X11/keysym.h>
 #include <stdint.h>
-#include <stdio.h>
+#include <xcb/xproto.h>
 
+#include "action.h"
 #include "types.h"
 
-/* 壁纸列表，支持通配符和 shell 环境变量拼接，最后以 NULL 结尾 */
+/* 壁纸列表，支持通配符和 shell 环境变量拼接 */
 const char *wallpapers[] = {};
 /* 壁纸切换间隔（单位：秒），0 表示不切换 */
 const uint32_t wallpaper_interval = 0;
@@ -59,6 +61,19 @@ const rule_t rules[] = {
   {.class = "Emacs", .monitor_amount = 2, .monitor_index = 0, .tags = 1 << 1},
 };
 
+#define SUPER XCB_MOD_MASK_4
+#define ALT XCB_MOD_MASK_1
+#define CTRL XCB_MOD_MASK_CONTROL
+#define SHIFT XCB_MOD_MASK_SHIFT
+
+const char launcher[] =
+  "rofi -show combi -modes window,drun,run,ssh,combi,windowcd";
+const keybinding_t keys[] = {
+  {SUPER, XK_p, spawn, {.ptr = launcher}},
+  {SUPER, XK_q, quit, {.b = false}},
+  {SUPER, XK_r, quit, {.b = true}},
+};
+
 const char *const bar_bg = "#222222";
 const char *const tag_bg = "#222222";
 const char *const active_tag_bg = "#005577";

src/include/event-adapter.h

@@ -25,7 +25,7 @@ typedef struct mapping_notify_event_t {
 
 typedef struct key_press_event_t {
   event_type_t type;
-  uint32_t key_symbols;
+  uint32_t key_symbol;
   uint32_t modifiers;
 } key_press_event_t;
 

src/include/types.h

@@ -24,7 +24,7 @@ struct monitor_t {
 
   /* 为了避免引入 cairo 相关头文件，这里用 void *
    * 指针代替实际的指针类型，使用时强转为相应指针类型使用即可 */
-  void *cr;      /* cairo_t */
+  void *cr; /* cairo_t */
 
   const layout_t *layout;
   monitor_t *next;
@@ -73,6 +73,21 @@ typedef struct rule_t {
   bool floating;
 } rule_t;
 
+typedef union user_action_arg_t {
+  bool b;
+  int32_t i;
+  uint32_t ui;
+  float f;
+  const void *ptr;
+} user_action_arg_t;
+
+typedef struct keybinding_t {
+  uint32_t modifiers;
+  uint32_t key_symbol;
+  void (*func)(const user_action_arg_t *);
+  const user_action_arg_t arg;
+} keybinding_t;
+
 typedef struct color_t {
   uint32_t rgba;
   uint32_t argb;

src/include/xcb.h

@@ -2,8 +2,10 @@
 
 #include <X11/cursorfont.h>
 #include <stdbool.h>
+#include <stddef.h>
 #include <stdint.h>
 #include <xcb/xproto.h>
+#include "types.h"
 
 bool has_other_wm_running(void);
 int get_xcb_connection_fd(void);
@@ -56,6 +58,8 @@ window_list_t *scan_window_list(void);
 void free_window_list(window_list_t *window_list);
 void clean_xcb(void);
 
+void grab_keybindings(const keybinding_t *keys, const size_t length);
+
 bool get_xresource_uint32(const char *name, uint32_t *value);
 void get_xresource_string(const char *name, char **value, const char *fallback);
 void clean_xresource(void);

src/main.c

@@ -8,8 +8,10 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 #include <wordexp.h>
 
+#include "action.h"
 #include "config.h"
 #include "event-adapter.h"
 #include "renderer.h"
@@ -30,6 +32,8 @@ static void init_monitor_bar(void);
 static void get_xresource_config(void);
 static void update_bars(void);
 static void init_xcb_event_loop(void);
+static void xcb_event_handler(generic_event_t *event, void *user_data);
+static void key_press(key_press_event_t *event);
 static gboolean handle_xcb_event(GIOChannel *channel, GIOCondition condition,
                                  gpointer userdata);
 static void cleanup(void);
@@ -47,6 +51,16 @@ static uint32_t bar_y_pad = bar_y_padding;
 static uint32_t tag_x_pad = tag_x_padding;
 static uint32_t bar_height = 0;
 
+static bool need_restart = false;
+
+void spawn(const user_action_arg_t *arg) {
+  g_spawn_command_line_async(arg->ptr, NULL);
+}
+void quit(const user_action_arg_t *arg) {
+  need_restart = arg->b;
+  g_main_loop_quit(loop);
+}
+
 /* 调试函数，开发完成后删除 */
 static void print_monitor_list_info(monitor_t *monitor_list) {
   printf("========================= monitor info =========================\n");
@@ -359,6 +373,7 @@ void update_bars(void) {
 
 void init_xcb_event_loop(void) {
   adapter = create_event_adapter();
+  event_adapter_set_handler(adapter, xcb_event_handler, NULL);
   GIOChannel *channel = g_io_channel_unix_new(get_xcb_connection_fd());
   g_io_channel_set_encoding(channel, NULL, NULL);
   GIOCondition cond = G_IO_IN | G_IO_HUP | G_IO_ERR;
@@ -366,6 +381,27 @@ void init_xcb_event_loop(void) {
   g_io_channel_unref(channel);
 }
 
+void xcb_event_handler(generic_event_t *event, void *user_data) {
+  switch (event->type) {
+    case EVENT_TYPE_KEY_PRESS:
+      key_press((key_press_event_t *)event);
+      break;
+    default:
+      break;
+  }
+}
+
+void key_press(key_press_event_t *event) {
+  const keybinding_t *key = NULL;
+  for (int i = 0; i < LENGTH(keys); i++) {
+    key = &keys[i];
+    if (key->key_symbol == event->key_symbol &&
+        key->modifiers == event->modifiers && key->func) {
+      key->func(&key->arg);
+    }
+  }
+}
+
 gboolean handle_xcb_event(GIOChannel *channel, GIOCondition condition,
                           gpointer userdata) {
   if (condition & (G_IO_HUP | G_IO_ERR)) {
@@ -434,6 +470,8 @@ int main(int argc, char *argv[]) {
 
   free_window_list(window_list);
 
+  grab_keybindings(keys, LENGTH(keys));
+
   init_xcb_event_loop();
 
   loop = g_main_loop_new(NULL, FALSE);
@@ -441,5 +479,10 @@ int main(int argc, char *argv[]) {
 
   cleanup();
 
+  if (need_restart) {
+    need_restart = false;
+    execvp(argv[0], argv);
+  }
+
   return 0;
 }

src/xcb/event.c

@@ -29,7 +29,7 @@ static void convert_event(xcb_generic_event_t *xcb_event,
       int col = ev->state & XCB_MOD_MASK_2 ? 1 : 0;
       xcb_keysym_t keysym = xcb_key_press_lookup_keysym(key_symbols, ev, col);
       event->key_press.type = EVENT_TYPE_KEY_PRESS;
-      event->key_press.key_symbols = keysym;
+      event->key_press.key_symbol = keysym;
       event->key_press.modifiers = ev->state;
       break;
     }

src/xcb/xcb.c

@@ -297,3 +297,28 @@ void clean_xcb(void) {
   conn = NULL;
   screen = NULL;
 }
+
+void grab_keybindings(const keybinding_t *keys, const size_t length) {
+  xcb_window_t root = screen->root;
+  xcb_keycode_t key = XCB_GRAB_ANY;
+  xcb_ungrab_key(conn, key, root, XCB_MOD_MASK_ANY);
+  key_symbols = xcb_key_symbols_alloc(conn);
+
+  xcb_grab_mode_t mode = XCB_GRAB_MODE_ASYNC;
+  xcb_keycode_t *keycode = NULL;
+  xcb_mod_mask_t modifiers;
+  xcb_void_cookie_t cookie;
+  xcb_generic_error_t *error = NULL;
+
+  for (int i = 0; i < length; i++) {
+    xcb_keysym_t keysym = keys[i].key_symbol;
+    keycode = xcb_key_symbols_get_keycode(key_symbols, keysym);
+    modifiers = keys[i].modifiers;
+    cookie = xcb_grab_key(conn, key, root, modifiers, *keycode, mode, mode);
+    error = xcb_request_check(conn, cookie);
+    if (error) {
+      clean_xcb();
+      die("%scannot grap key", APP_NAME);
+    }
+  }
+}