swaybar: Implement binding_mode_indicator

1 files changed, 76 insertions, 7 deletions

diff --git a/swaybar/main.c b/swaybar/main.c
index 2ee25589..18283afa 100644
--- a/swaybar/main.c
+++ b/swaybar/main.c
@@ -76,6 +76,8 @@ struct registry *registry;
 struct window *window;
 bool dirty = true;
 char *separator_symbol = NULL;
+char *mode = NULL;
+bool binding_mode_indicator = true;
 bool strip_workspace_numbers = false;
 typedef enum {UNDEF, TEXT, I3BAR} command_protocol;
 command_protocol protocol = UNDEF;
@@ -291,7 +293,7 @@ void bar_ipc_init(int outputi, const char *bar_id) {
         json_object *bar_config = json_tokener_parse(res);
         json_object *tray_output, *mode, *hidden_state, *position, *_status_command;
         json_object *font, *bar_height, *workspace_buttons, *_strip_workspace_numbers;
-        json_object *binding_mode_indicator, *verbose, *_colors, *sep_symbol;
+        json_object *_binding_mode_indicator, *verbose, *_colors, *sep_symbol;
         json_object_object_get_ex(bar_config, "tray_output", &tray_output);
         json_object_object_get_ex(bar_config, "mode", &mode);
         json_object_object_get_ex(bar_config, "hidden_state", &hidden_state);
@@ -301,7 +303,7 @@ void bar_ipc_init(int outputi, const char *bar_id) {
         json_object_object_get_ex(bar_config, "bar_height", &bar_height);
         json_object_object_get_ex(bar_config, "workspace_buttons", &workspace_buttons);
         json_object_object_get_ex(bar_config, "strip_workspace_numbers", &_strip_workspace_numbers);
-        json_object_object_get_ex(bar_config, "binding_mode_indicator", &binding_mode_indicator);
+        json_object_object_get_ex(bar_config, "binding_mode_indicator", &_binding_mode_indicator);
         json_object_object_get_ex(bar_config, "verbose", &verbose);
         json_object_object_get_ex(bar_config, "separator_symbol", &sep_symbol);
         json_object_object_get_ex(bar_config, "colors", &_colors);
@@ -328,6 +330,10 @@ void bar_ipc_init(int outputi, const char *bar_id) {
                 strip_workspace_numbers = json_object_get_boolean(_strip_workspace_numbers);
         }
 
+        if (_binding_mode_indicator) {
+                binding_mode_indicator = json_object_get_boolean(_binding_mode_indicator);
+        }
+
         if (bar_height) {
                 int width, height;
                 get_text_size(window, &width, &height, "Test string for measuring purposes");
@@ -635,6 +641,28 @@ void render_workspace_button(struct workspace *ws, double *x) {
         free(name);
 }
 
+void render_binding_mode_indicator(double pos) {
+        int width, height;
+        get_text_size(window, &width, &height, "%s", mode);
+
+        // background
+        cairo_set_source_u32(window->cairo, colors.binding_mode.background);
+        cairo_rectangle(window->cairo, pos, 1.5, width + ws_hor_padding * 2 - 1,
+                        height + ws_ver_padding * 2);
+        cairo_fill(window->cairo);
+
+        // border
+        cairo_set_source_u32(window->cairo, colors.binding_mode.border);
+        cairo_rectangle(window->cairo, pos, 1.5, width + ws_hor_padding * 2 - 1,
+                        height + ws_ver_padding * 2);
+        cairo_stroke(window->cairo);
+
+        // text
+        cairo_set_source_u32(window->cairo, colors.binding_mode.text);
+        cairo_move_to(window->cairo, (int)pos + ws_hor_padding, margin);
+        pango_printf(window, "%s", mode);
+}
+
 void render() {
         int i;
 
@@ -675,6 +703,11 @@ void render() {
                 struct workspace *ws = workspaces->items[i];
                 render_workspace_button(ws, &x);
         }
+
+        // binding mode indicator
+        if (mode && binding_mode_indicator) {
+                render_binding_mode_indicator(x);
+        }
 }
 
 void free_status_block(void *item) {
@@ -1034,6 +1067,45 @@ int i3json_handle_fd(int fd) {
         return i3json_parse();
 }
 
+bool handle_ipc_event() {
+        struct ipc_response *resp = ipc_recv_response(ipc_event_socketfd);
+        switch (resp->type) {
+        case IPC_EVENT_WORKSPACE:
+                ipc_update_workspaces();
+                break;
+        case IPC_EVENT_MODE: {
+                json_object *result = json_tokener_parse(resp->payload);
+                if (!result) {
+                        free_ipc_response(resp);
+                        sway_log(L_ERROR, "failed to parse payload as json");
+                        return false;
+                }
+                json_object *json_change;
+                if (json_object_object_get_ex(result, "change", &json_change)) {
+                        const char *change = json_object_get_string(json_change);
+
+                        free(mode);
+                        if (strcmp(change, "default") == 0) {
+                                mode = NULL;
+                        } else {
+                                mode = strdup(change);
+                        }
+                } else {
+                        sway_log(L_ERROR, "failed to parse response");
+                }
+
+                json_object_put(result);
+                break;
+        }
+        default:
+                free_ipc_response(resp);
+                return false;
+        }
+
+        free_ipc_response(resp);
+        return true;
+}
+
 void poll_for_update() {
         fd_set readfds;
         int activity;
@@ -1058,11 +1130,8 @@ void poll_for_update() {
                 }
 
                 if (FD_ISSET(ipc_event_socketfd, &readfds)) {
-                        sway_log(L_DEBUG, "Got workspace update.");
-                        struct ipc_response *resp = ipc_recv_response(ipc_event_socketfd);
-                        free_ipc_response(resp);
-                        ipc_update_workspaces();
-                        dirty = true;
+                        sway_log(L_DEBUG, "Got IPC event.");
+                        dirty = handle_ipc_event();
                 }
 
                 if (status_command && FD_ISSET(status_read_fd, &readfds)) {