创建每个屏幕对应的信息条窗口

src/main.c

@@ -1,3 +1,5 @@
+#include <cairo-xcb.h>
+#include <cairo.h>
 #include <glib.h>
 #include <glibconfig.h>
 #include <stdbool.h>
@@ -23,6 +25,8 @@ static wallpaper_config_t *parse_wallpaper_config(void);
 static void free_wallpaper_config(wallpaper_config_t *wallpaper_config);
 static void init_color_set(void);
 static void parse_color(const char *hex, color_t *color);
+static void init_monitor_bar(void);
+static void get_xresource_config(void);
 static void init_xcb_event_loop(void);
 static gboolean handle_xcb_event(GIOChannel *channel, GIOCondition condition,
                                  gpointer userdata);
@@ -32,6 +36,12 @@ static monitor_t *monitors = NULL;
 static wallpaper_config_t *wallpaper_config = NULL;
 static color_set_t *color_set = NULL;
 static GMainLoop *loop = NULL;
+static char *font_family = NULL;
+static uint32_t font_size = default_font_size;
+static uint32_t dpi = dpi_fallback;
+static uint32_t bar_y_pad = bar_y_padding;
+static uint32_t tag_x_pad = tag_x_padding;
+static uint32_t bar_height = 0;
 
 /* 调试函数，开发完成后删除 */
 static void print_monitor_list_info(monitor_t *monitor_list) {
@@ -278,6 +288,48 @@ void parse_color(const char *hex, color_t *color) {
                         &color->alpha);
 }
 
+void init_monitor_bar(void) {
+  get_xresource_config();
+  uint32_t font_height = get_font_height(font_family, font_size, dpi);
+  bar_height = font_height + bar_y_pad * 2;
+  for (monitor_t *m = monitors; m; m = m->next) {
+    bar_cairo_params_t *p =
+      create_bar_window(m->monitor_x, m->monitor_y, m->monitor_width,
+                        bar_height, color_set->bar_bg.argb, cursor_normal);
+    m->window_x = m->monitor_x;
+    m->window_width = m->monitor_width;
+    m->window_y = m->monitor_y + bar_height;
+    m->window_height = m->monitor_height - bar_height;
+    m->bar_window = p->window;
+
+    cairo_surface_t *surface = cairo_xcb_surface_create(
+      p->conn, p->window, p->visual, m->monitor_width, bar_height);
+    cairo_t *cr = cairo_create(surface);
+    cairo_surface_destroy(surface);
+    free(p);
+
+    cairo_status_t status = cairo_status(cr);
+    if (status != CAIRO_STATUS_SUCCESS) {
+      die("cannot create cairo context: %s\n", cairo_status_to_string(status));
+    }
+
+    m->cr = cr;
+  }
+  printf("font height: %u, bar height: %u\n", font_height, bar_height);
+}
+
+void get_xresource_config(void) {
+  get_xresource_uint32("Xft.dpi", &dpi);
+  get_xresource_string("zswm.font_family", &font_family, default_font_family);
+  get_xresource_uint32("zswm.font_size", &font_size);
+  get_xresource_uint32("zswm.bar_y_padding", &bar_y_pad);
+  get_xresource_uint32("zswm.tag_x_padding", &tag_x_pad);
+
+  printf("dpi: %u, font family: %s, font  size: %u\n", dpi, font_family,
+         font_size);
+  clean_xresource();
+}
+
 void init_xcb_event_loop(void) {
   GIOChannel *channel = g_io_channel_unix_new(get_xcb_connection_fd());
   g_io_channel_set_encoding(channel, NULL, NULL);
@@ -298,7 +350,7 @@ gboolean handle_xcb_event(GIOChannel *channel, GIOCondition condition,
 }
 
 void cleanup(void) {
-  clean_xcb();
+  clean_pango_context();
 
   free_wallpaper_config(wallpaper_config);
   wallpaper_config = NULL;
@@ -306,6 +358,9 @@ void cleanup(void) {
   free(color_set);
   color_set = NULL;
 
+  free(font_family);
+  font_family = NULL;
+
   monitor_t *m = monitors;
   client_t *c = m->clients;
   while (m) {
@@ -315,11 +370,15 @@ void cleanup(void) {
       c = tc;
     }
     monitor_t *next_monitor = m->next;
+    if (m->cr) cairo_destroy(m->cr);
+    destroy_window(m->bar_window);
     g_strfreev(m->tags);
     free(m);
     m = next_monitor;
   }
   monitors = NULL;
+
+  clean_xcb();
 }
 
 int main(int argc, char *argv[]) {
@@ -329,6 +388,8 @@ int main(int argc, char *argv[]) {
 
   init_monitors();
   init_color_set();
+  init_monitor_bar();
+  set_root_cursor(cursor_normal);
   init_wallpaper();
 
   window_list_t *window_list = scan_window_list();