Merge pull request #776 from Hummer12007/window-events

[RFC] Implement window events

9 files changed, 113 insertions, 23 deletions

diff --git a/include/ipc-json.h b/include/ipc-json.h
index f90d801e..02b07a23 100644
--- a/include/ipc-json.h
+++ b/include/ipc-json.h
@@ -9,5 +9,6 @@ json_object *ipc_json_get_version();
 json_object *ipc_json_describe_bar_config(struct bar_config *bar);
 json_object *ipc_json_describe_container(swayc_t *c);
 json_object *ipc_json_describe_container_recursive(swayc_t *c);
+json_object *ipc_json_describe_window(swayc_t *c);
 
 #endif
diff --git a/include/ipc-server.h b/include/ipc-server.h
index aef3aa07..1d199134 100644
--- a/include/ipc-server.h
+++ b/include/ipc-server.h
@@ -18,6 +18,10 @@ void ipc_event_barconfig_update(struct bar_config *bar);
  */
 void ipc_event_mode(const char *mode);
 /**
+ * Send IPC window change event
+ */
+void ipc_event_window(swayc_t *window, const char *change);
+/**
  * Sends an IPC modifier event to all listening clients.  The modifier event
  * includes a key 'change' with the value of state and a key 'modifier' with
  * the name of that modifier.
diff --git a/sway/commands.c b/sway/commands.c
index aaacf0fc..5cf93c53 100644
--- a/sway/commands.c
+++ b/sway/commands.c
@@ -679,6 +679,7 @@ static struct cmd_results *cmd_floating(int argc, char **argv) {
                 view->width = view->height = 0;
                 arrange_windows(swayc_active_workspace(), -1, -1);
                 remove_view_from_scratchpad(view);
+                ipc_event_window(view, "floating");
         }
         set_focused_container(view);
         return cmd_results_new(CMD_SUCCESS, NULL, NULL);
@@ -2495,6 +2496,7 @@ static struct cmd_results *cmd_fullscreen(int argc, char **argv) {
                 arrange_windows(container, -1, -1);
                 workspace->fullscreen = NULL;
         }
+        ipc_event_window(container, "fullscreen_mode");
 
         return cmd_results_new(CMD_SUCCESS, NULL, NULL);
 }
diff --git a/sway/extensions.c b/sway/extensions.c
index 1fe15ac5..4611f33e 100644
--- a/sway/extensions.c
+++ b/sway/extensions.c
@@ -8,6 +8,7 @@
 #include "log.h"
 #include "input_state.h"
 #include "extensions.h"
+#include "ipc-server.h"
 
 struct desktop_shell_state desktop_shell;
 
@@ -128,6 +129,7 @@ static void set_lock_surface(struct wl_client *client, struct wl_resource *resou
                 }
                 wlc_view_set_state(view->handle, WLC_BIT_FULLSCREEN, true);
                 workspace->fullscreen = view;
+                ipc_event_window(view, "fullscreen_mode");
                 desktop_shell.is_locked = true;
                 // reset input state
                 input_init();
diff --git a/sway/focus.c b/sway/focus.c
index ff064b72..97fa4b98 100644
--- a/sway/focus.c
+++ b/sway/focus.c
@@ -118,6 +118,10 @@ bool set_focused_container(swayc_t *c) {
                 c = focused;
         }
 
+        if (c->type == C_VIEW) {
+                // dispatch a window event
+                ipc_event_window(c, "focus");
+        }
         // update container focus from here to root, making necessary changes along
         // the way
         swayc_t *p = c;
diff --git a/sway/handlers.c b/sway/handlers.c
index b95a6e65..abed8cd7 100644
--- a/sway/handlers.c
+++ b/sway/handlers.c
@@ -369,6 +369,7 @@ static bool handle_view_created(wlc_handle handle) {
         suspend_workspace_cleanup = true;
 
         if (newview) {
+                ipc_event_window(newview, "new");
                 set_focused_container(newview);
                 swayc_t *output = swayc_parent_by_type(newview, C_OUTPUT);
                 arrange_windows(output, -1, -1);
@@ -461,6 +462,7 @@ static void handle_view_destroyed(wlc_handle handle) {
                 }
 
                 arrange_windows(parent, -1, -1);
+                ipc_event_window(parent, "close");
         } else {
                 // Is it unmanaged?
                 int i;
@@ -555,6 +557,7 @@ static void handle_view_properties_updated(wlc_handle view, uint32_t mask) {
                                 } else if (c->border_type == B_NORMAL) {
                                         update_view_border(c);
                                 }
+                                ipc_event_window(c, "title");
                         }
                 }
         }
diff --git a/sway/ipc-json.c b/sway/ipc-json.c
index ca45557c..4e5ea896 100644
--- a/sway/ipc-json.c
+++ b/sway/ipc-json.c
@@ -17,6 +17,17 @@ static json_object *ipc_json_create_rect(swayc_t *c) {
         return rect;
 }
 
+static json_object *ipc_json_create_rect_from_geometry(struct wlc_geometry g) {
+        json_object *rect = json_object_new_object();
+
+        json_object_object_add(rect, "x", json_object_new_int(g.origin.x));
+        json_object_object_add(rect, "y", json_object_new_int(g.origin.y));
+        json_object_object_add(rect, "width", json_object_new_int(g.size.w));
+        json_object_object_add(rect, "height", json_object_new_int(g.size.h));
+
+        return rect;
+}
+
 static const char *ipc_json_border_description(swayc_t *c) {
         const char *border;
 
@@ -38,10 +49,10 @@ static const char *ipc_json_border_description(swayc_t *c) {
         return border;
 }
 
-static const char *ipc_json_layout_description(swayc_t *c) {
+static const char *ipc_json_layout_description(enum swayc_layouts l) {
         const char *layout;
 
-        switch (c->layout) {
+        switch (l) {
         case L_VERT:
                 layout = "splitv";
                 break;
@@ -111,7 +122,7 @@ static void ipc_json_describe_output(swayc_t *output, json_object *object) {
 static void ipc_json_describe_workspace(swayc_t *workspace, json_object *object) {
         int num = (isdigit(workspace->name[0])) ? atoi(workspace->name) : -1;
         bool focused = root_container.focused == workspace->parent && workspace->parent->focused == workspace;
-        const char *layout = ipc_json_layout_description(workspace);
+        const char *layout = ipc_json_layout_description(workspace->layout);
 
         json_object_object_add(object, "num", json_object_new_int(num));
         json_object_object_add(object, "focused", json_object_new_boolean(focused));
@@ -121,26 +132,68 @@ static void ipc_json_describe_workspace(swayc_t *workspace, json_object *object)
         json_object_object_add(object, "layout", (strcmp(layout, "null") == 0) ? NULL : json_object_new_string(layout));
 }
 
-static void ipc_json_describe_view(swayc_t *view, json_object *object) {
-        float percent = ipc_json_child_percentage(view);
-        const char *layout = ipc_json_layout_description(view);
+// window is in the scratchpad ? changed : none
+static const char *ipc_json_get_scratchpad_state(swayc_t *c) {
+        int i;
+        for (i = 0; i < scratchpad->length; i++) {
+                if (scratchpad->items[i] == c) {
+                        return "changed";
+                }
+        }
+        return "none"; // we ignore the fresh value
+}
+
+static void ipc_json_describe_view(swayc_t *c, json_object *object) {
+        json_object *props = json_object_new_object();
+        float percent = ipc_json_child_percentage(c);
+        const char *layout = (c->parent->type == C_CONTAINER) ?
+                ipc_json_layout_description(c->parent->layout) : "none";
+        const char *last_layout = (c->parent->type == C_CONTAINER) ?
+                ipc_json_layout_description(c->parent->prev_layout) : "none";
+        wlc_handle parent = wlc_view_get_parent(c->handle);
+
+        json_object_object_add(object, "id", json_object_new_int(c->handle));
+        json_object_object_add(object, "type", json_object_new_string((c->is_floating) ? "floating_con" : "con"));
 
-        json_object_object_add(object, "border", json_object_new_string(ipc_json_border_description(view)));
-        json_object_object_add(object, "current_border_width", json_object_new_int(view->border_thickness));
+        json_object_object_add(object, "scratchpad_state",
+                json_object_new_string(ipc_json_get_scratchpad_state(c)));
         json_object_object_add(object, "percent", (percent > 0) ? json_object_new_double(percent) : NULL);
         // TODO: make urgency actually work once Sway supports it
         json_object_object_add(object, "urgent", json_object_new_boolean(false));
-        json_object_object_add(object, "focused", json_object_new_boolean(view->is_focused));
-        json_object_object_add(object, "type", json_object_new_string((view->is_floating) ? "floating_con" : "con"));
-        json_object_object_add(object, "layout", (strcmp(layout, "null") == 0) ? NULL : json_object_new_string(layout));
+        json_object_object_add(object, "focused", json_object_new_boolean(c->is_focused));
 
-        if (view->class) {
-                json_object_object_add(object, "class", json_object_new_string(view->class));
-        }
+        json_object_object_add(object, "layout",
+                (strcmp(layout, "null") == 0) ? NULL : json_object_new_string(layout));
+        json_object_object_add(object, "last_split_layout",
+                (strcmp(last_layout, "null") == 0) ? NULL : json_object_new_string(last_layout));
+        json_object_object_add(object, "workspace_layout",
+                json_object_new_string(ipc_json_layout_description(swayc_parent_by_type(c, C_WORKSPACE)->layout)));
 
-        if (view->app_id) {
-                json_object_object_add(object, "app_id", json_object_new_string(view->app_id));
-        }
+        json_object_object_add(object, "border", json_object_new_string(ipc_json_border_description(c)));
+        json_object_object_add(object, "current_border_width", json_object_new_int(c->border_thickness));
+
+        json_object_object_add(object, "rect", ipc_json_create_rect(c));
+        json_object_object_add(object, "deco_rect", ipc_json_create_rect_from_geometry(c->title_bar_geometry));
+        json_object_object_add(object, "geometry", ipc_json_create_rect_from_geometry(c->cached_geometry));
+        json_object_object_add(object, "window_rect", ipc_json_create_rect_from_geometry(c->actual_geometry));
+
+        json_object_object_add(object, "name", (c->name) ? json_object_new_string(c->name) : NULL);
+
+        json_object_object_add(object, "window", json_object_new_int(c->handle)); // for the sake of i3 compat
+        json_object_object_add(props, "class", c->class ? json_object_new_string(c->class) :
+                c->app_id ? json_object_new_string(c->app_id) : NULL);
+        json_object_object_add(props, "title", (c->name) ? json_object_new_string(c->name) : NULL);
+        json_object_object_add(props, "transient_for", parent ? json_object_new_int(parent) : NULL);
+        json_object_object_add(object, "window_properties", props);
+
+        json_object_object_add(object, "fullscreen_mode",
+                json_object_new_int(swayc_is_fullscreen(c) ? 1 : 0));
+        json_object_object_add(object, "sticky", json_object_new_boolean(c->sticky));
+        json_object_object_add(object, "floating", json_object_new_string(
+                c->is_floating ? "auto_on" : "auto_off")); // we can't state the cause
+
+        json_object_object_add(object, "app_id", c->app_id ? json_object_new_string(c->app_id) : NULL);
+        // we do not include children, floating, unmanaged etc. as views have none
 }
 
 json_object *ipc_json_describe_container(swayc_t *c) {
diff --git a/sway/ipc-server.c b/sway/ipc-server.c
index 0729bfd5..305b6944 100644
--- a/sway/ipc-server.c
+++ b/sway/ipc-server.c
@@ -54,6 +54,8 @@ bool ipc_send_reply(struct ipc_client *client, const char *payload, uint32_t pay
 void ipc_get_workspaces_callback(swayc_t *workspace, void *data);
 void ipc_get_outputs_callback(swayc_t *container, void *data);
 
+#define event_mask(ev) (1 << (ev & 0x7F))
+
 void ipc_init(void) {
         ipc_socket = socket(AF_UNIX, SOCK_STREAM | SOCK_NONBLOCK | SOCK_CLOEXEC, 0);
         if (ipc_socket == -1) {
@@ -334,16 +336,18 @@ void ipc_client_handle_command(struct ipc_client *client) {
                 for (int i = 0; i < json_object_array_length(request); i++) {
                         const char *event_type = json_object_get_string(json_object_array_get_idx(request, i));
                         if (strcmp(event_type, "workspace") == 0) {
-                                client->subscribed_events |= IPC_EVENT_WORKSPACE;
+                                client->subscribed_events |= event_mask(IPC_EVENT_WORKSPACE);
                         } else if (strcmp(event_type, "barconfig_update") == 0) {
-                                client->subscribed_events |= IPC_EVENT_BARCONFIG_UPDATE;
+                                client->subscribed_events |= event_mask(IPC_EVENT_BARCONFIG_UPDATE);
                         } else if (strcmp(event_type, "mode") == 0) {
-                                client->subscribed_events |= IPC_EVENT_MODE;
+                                client->subscribed_events |= event_mask(IPC_EVENT_MODE);
+                        } else if (strcmp(event_type, "window") == 0) {
+                                client->subscribed_events |= event_mask(IPC_EVENT_WINDOW);
                         } else if (strcmp(event_type, "modifier") == 0) {
-                                client->subscribed_events |= IPC_EVENT_MODIFIER;
+                                client->subscribed_events |= event_mask(IPC_EVENT_MODIFIER);
 #if SWAY_BINDING_EVENT
                         } else if (strcmp(event_type, "binding") == 0) {
-                                client->subscribed_events |= IPC_EVENT_BINDING;
+                                client->subscribed_events |= event_mask(IPC_EVENT_BINDING);
 #endif
                         } else {
                                 ipc_send_reply(client, "{\"success\": false}", 18);
@@ -522,7 +526,7 @@ void ipc_send_event(const char *json_string, enum ipc_command_type event) {
         struct ipc_client *client;
         for (i = 0; i < ipc_client_list->length; i++) {
                 client = ipc_client_list->items[i];
-                if ((client->subscribed_events & event) == 0) {
+                if ((client->subscribed_events & event_mask(event)) == 0) {
                         continue;
                 }
                 client->current_command = event;
@@ -556,6 +560,21 @@ void ipc_event_workspace(swayc_t *old, swayc_t *new, const char *change) {
         json_object_put(obj); // free
 }
 
+void ipc_event_window(swayc_t *window, const char *change) {
+        json_object *obj = json_object_new_object();
+        json_object_object_add(obj, "change", json_object_new_string(change));
+        if (strcmp(change, "close") == 0 || !window) {
+                json_object_object_add(obj, "container", NULL);
+        } else {
+                json_object_object_add(obj, "container", ipc_json_describe_container(window));
+        }
+
+        const char *json_string = json_object_to_json_string(obj);
+        ipc_send_event(json_string, IPC_EVENT_WINDOW);
+
+        json_object_put(obj); // free
+}
+
 void ipc_event_barconfig_update(struct bar_config *bar) {
         json_object *json = ipc_json_describe_bar_config(bar);
         const char *json_string = json_object_to_json_string(json);
diff --git a/sway/layout.c b/sway/layout.c
index 2e0bf0bb..d32b4139 100644
--- a/sway/layout.c
+++ b/sway/layout.c
@@ -91,6 +91,7 @@ void add_floating(swayc_t *ws, swayc_t *child) {
         if (!ws->focused) {
                 ws->focused = child;
         }
+        ipc_event_window(child, "floating");
 }
 
 swayc_t *add_sibling(swayc_t *fixed, swayc_t *active) {
@@ -305,6 +306,7 @@ void move_container(swayc_t *container, enum movement_direction dir) {
                 parent = child->parent;
         }
         arrange_windows(parent->parent, -1, -1);
+        ipc_event_window(container, "move");
         set_focused_container_for(parent->parent, container);
 }