add tab layout implementation

src/client.c

@@ -20,6 +20,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "client.h"
 #include "util.h"
 #include "wm.h"
+#include <X11/X.h>
 #include <X11/Xft/Xft.h>
 #include <X11/Xlib.h>
 #include <assert.h>
@@ -158,6 +159,7 @@ void wm_client_handle_window_types(Wm *wm, Client *c, XMapRequestEvent e)
 void wm_client_hide(Wm *wm, Client *c)
 {
     RETURN_IF_NULL(c);
+    DEBUG_PRINT("%s\n", __func__);
 
     if (c->hidden)
         return;
@@ -165,11 +167,13 @@ void wm_client_hide(Wm *wm, Client *c)
     c->hidden = true;
     XUnmapWindow(wm->display, c->frame);
     XUnmapWindow(wm->display, c->window);
+    XSync(wm->display, False);
 }
 
 void wm_client_show(Wm *wm, Client *c)
 {
     RETURN_IF_NULL(c);
+    DEBUG_PRINT("%s\n", __func__);
 
     if (!c->hidden)
         return;
@@ -177,6 +181,7 @@ void wm_client_show(Wm *wm, Client *c)
     c->hidden = false;
     XMapWindow(wm->display, c->frame);
     XMapWindow(wm->display, c->window);
+    XSync(wm->display, False);
 }
 
 void wm_client_focus(Wm *wm, Client *c)
@@ -190,13 +195,35 @@ void wm_client_focus(Wm *wm, Client *c)
     if (old_focused_client)
         old_focused_client->focused = false;
 
+    XWindowAttributes att;
+    XGetWindowAttributes(wm->display, c->window, &att);
+    if (att.map_state == IsUnmapped)
+        XMapWindow(wm->display, c->window);
+
+    XGetWindowAttributes(wm->display, c->frame, &att);
+    if (att.map_state == IsUnmapped)
+        XMapWindow(wm->display, c->frame);
+
+    c->hidden = false;
+
     XSetInputFocus(wm->display, c->window, RevertToPointerRoot, CurrentTime);
     wm_client_set_atom(wm, c, "_NET_ACTIVE_WINDOW", (unsigned char*) &c->window,
                        XA_WINDOW, 1);
+    XSync(wm->display, False);
+
+    TreeNode *node = wm_treenode_ptr_find_client_node(c->ws->tree, c);
+    if (node && node->parent && node->parent->type == NODE_TAB) {
+        for (size_t i = 0; i < node->parent->children->size; i++) {
+            node->parent->children->nodes[i]->client->focused = false;
+        }
+    }
+
     c->focused = true;
     wm->focused_client = c;
-    TreeNode *node = wm_treenode_ptr_find_client_node(c->ws->tree, c);
     c->ws->focused_node = node;
+    if (node && node->parent && node->parent->type == NODE_TAB) {
+        wm_layout(wm, c->ws->monitor);
+    }
     wm_monitor_clients_border(wm, c->m);
     wm_monitor_draw_all_clients_frame(wm, c->m);
 }
@@ -342,6 +369,37 @@ Client* wm_find_client_direction(Client *c, int dir)
     if (!c)
         return NULL;
 
+    TreeNode *node = wm_treenode_ptr_find_client_node(c->ws->tree, c);
+
+    if (node->parent && node->parent->type == NODE_TAB) {
+        TreeNode *parent = node->parent;
+        int client_index = INT_MAX;
+
+        for (int i = 0; i < parent->children->size; i++) {
+            if (parent->children->nodes[i]->client == c) {
+                client_index = i;
+                break;
+            }
+        }
+
+        assert(client_index != INT_MAX);
+
+        switch (dir) {
+            case LEFT:
+                if (client_index - 1 < 0)
+                    return parent->children->nodes[parent->children->size-1]->client;
+                else
+                    return parent->children->nodes[client_index - 1]->client;
+                break;
+            case RIGHT:
+                if (client_index + 1 >= parent->children->size)
+                    return parent->children->nodes[0]->client;
+                else
+                    return parent->children->nodes[client_index + 1]->client;
+                break;
+        }
+    }
+
     Client *ret = NULL;
     int x, y, dx, dy;
 
@@ -416,6 +474,7 @@ Client* wm_client_get_focused(Wm *wm)
 
 void wm_client_border(Wm *wm, Client *c)
 {
+    if (wm->config.show_titlebar) return;
     RETURN_IF_NULL(c);
 
     XVisualInfo vinfo;
@@ -444,6 +503,7 @@ void wm_client_border(Wm *wm, Client *c)
 
 void wm_monitor_clients_border(Wm *wm, Monitor *m)
 {
+    if (wm->config.show_titlebar) return;
     DEBUG_PRINT("%s\n", __func__)
     RETURN_IF_NULL(m);
     NodeArray *clients = wm_treenode_find_client_nodes(m->workspaces[m->selected_ws].tree);
@@ -482,6 +542,10 @@ void wm_client_draw_frame(Wm *wm, Client *c)
     if (!wm->config.show_titlebar) return;
     DEBUG_PRINT("%s\n", __func__);
 
+    TreeNode *node = wm_treenode_ptr_find_client_node(CURRENT_WS(wm).tree, c);
+    if (node->parent && node->parent->type == NODE_TAB) {
+        return;
+    }
 
     int screen = DefaultScreen(wm->display);
     Visual *visual = DefaultVisual(wm->display, screen);
@@ -504,6 +568,31 @@ void wm_monitor_draw_all_clients_frame(Wm* wm, Monitor *m)
     if (clients->size == 0)
         return;
 
+    NodeArray *nodes = wm_all_nodes_to_array(m->workspaces[m->selected_ws].tree);
+    for (size_t i = 0; i < nodes->size; i++) {
+        TreeNode *node = nodes->nodes[i];
+        if (node->type != NODE_TAB) continue;
+
+        int screen = DefaultScreen(wm->display);
+        Visual *visual = DefaultVisual(wm->display, screen);
+        Colormap cmap = DefaultColormap(wm->display, screen);
+
+        for (size_t j = 0; j < node->children->size; j++) {
+            Client *client = node->children->nodes[j]->client;
+            if (client->ws->index != m->selected_ws) continue;
+
+            XftDraw *draw = XftDrawCreate(wm->display, node->tab_frame, visual, cmap);
+
+            XftDrawRect(draw, (wm_client_is_focused(wm, client) ? &wm->titlebar_focused_color :
+                        &wm->titlebar_color), j * client->w / node->children->size, 0, client->w, client->h);
+
+            XftDrawStringUtf8(draw, &wm->titlebar_text_color, wm->titlebar_font,
+                              20 + j * client->w / node->children->size, 30, (void*)client->name, strlen(client->name));
+            XftDrawDestroy(draw);
+        }
+    }
+    wm_nodearray_free(nodes);
+
     for (size_t i = 0; i < clients->size; i++) {
         Client *client = ((TreeNode*)clients->nodes[i])->client;
         wm_client_draw_frame(wm, client);

src/handler.c

@@ -104,13 +104,12 @@ void wm_maprequest_handler(Wm *wm, XMapRequestEvent e)
     XSetWMName(wm->display, frame, &xtp);
     XFree(xtp.value);
 
-    XMapWindow(wm->display, frame);
-    XMapWindow(wm->display, e.window);
-
     c = wm_client_create(wm, e.window);
     RETURN_IF_NULL(c);
     c->frame = frame;
 
+    wm_client_show(wm, c);
+
     wm_ws_tree_insert_client(wm, c->ws, c);
 
     wm_client_handle_window_types(wm, c, e);

src/util.h

@@ -1,6 +1,7 @@
 #ifndef UTIL_H
 #define UTIL_H
 
+#include <X11/X.h>
 #include <stdbool.h>
 #include <stdint.h>
 #include <stdlib.h>
@@ -55,6 +56,8 @@ struct TreeNode {
     Client *client;
     unsigned int id;
     uint64_t distance;
+
+    Window tab_frame;
 };
 
 typedef struct {
@@ -113,6 +116,11 @@ void wm_nodearray_clear(NodeArray *arr);
  */
 bool wm_nodearray_remove(NodeArray *arr, size_t index);
 
+/**
+ * Returns true if `arr` contains `node`.
+ */
+bool wm_nodearray_contains(NodeArray *arr, TreeNode *node);
+
 /**
  * Frees the array.
  */
@@ -276,6 +284,12 @@ TreeNode* wm_treenode_ptr_find_client_node(TreeNode *root, Client *client);
  */
 NodeArray* wm_treenode_find_client_nodes(TreeNode *root);
 
+/**
+ * Searches for `child` in `parent->children`, and returns the index of `child`.
+ * If child could not be found, returns `SIZE_MAX`.
+ */
+size_t wm_treenode_find_index(TreeNode *parent, TreeNode* child);
+
 /**
  * Returns the sibling node of `node`.
  * Returns NULL on error.
@@ -372,6 +386,9 @@ void wm_logentries_free(UIntArray *entries);
  * array with the parsed values.
  * Return type: UIntArray<LogEntry*>
  */
+LogEntry *wm_json_obj_to_logentry(const char *key, struct json_object *jobj);
+
+/* UIntArray<LogEntry*> */
 UIntArray* wm_read_log(const char* filename);
 
 /**