From dbdf8d701eaaadb04fd6cfb85ceb6f1f5595db37 Mon Sep 17 00:00:00 2001
From: "Michael D. Lowis" <mike.lowis@gentex.com>
Date: Mon, 10 Jun 2019 15:04:48 -0400
Subject: [PATCH] switched to doubly linked list and tweaked redraw code to
 redraw on any property change. Also, added retile logic for when a window is
 removed

---
 src/anvil.c | 77 ++++++++++++++++++++++++++++-------------------------
 1 file changed, 41 insertions(+), 36 deletions(-)

diff --git a/src/anvil.c b/src/anvil.c
index d399df0..8e27734 100644
--- a/src/anvil.c
+++ b/src/anvil.c
@@ -91,6 +91,14 @@ void client_add(XConf* x, Window win) {
         biggy->h /= 2;
         c->y = biggy->y + biggy->h;
         client_config(x, biggy, biggy->x, biggy->y, biggy->w, biggy->h);
+
+        /* add the new client to the list after the biggest */
+        c->next = biggy->next;
+        c->prev = biggy;
+        biggy->next = c;
+        if (c->next) c->next->prev = c;
+    } else {
+        Clients = c;
     }
     client_config(x, c, c->x, c->y, c->w, c->h);
     client_raise(x, c);
@@ -98,27 +106,22 @@ void client_add(XConf* x, Window win) {
     XSync(x->display, False);
     XUngrabServer(x->display);
 
-    c->next = Clients;
-    Clients = c;
 }
 
-Client* client_del(XConf* x, Client* curr, Client* c) {
-    if (!curr) {
-        return NULL;
-    } else if (curr == c) {
-        Client* next = c->next;
-        XGrabServer(x->display);
-        XftDrawDestroy(c->xft);
-        XDestroyWindow(x->display, c->frame);
-        xfree(c->name);
-        free(c);
-        XSync(x->display, False);
-        XUngrabServer(x->display);
-        return next;
-    } else {
-        curr->next = client_del(x, curr->next, c);
-        return curr;
-    }
+void client_del(XConf* x, Client* c) {
+    /* first remove it from the list */
+    if (c->prev) c->prev->next = c->next;
+    if (c->next) c->next->prev = c->prev;
+    if (Clients == c) Clients = c->next;
+
+    /* clean it up now */
+    XGrabServer(x->display);
+    XftDrawDestroy(c->xft);
+    XDestroyWindow(x->display, c->frame);
+    xfree(c->name);
+    free(c);
+    XSync(x->display, False);
+    XUngrabServer(x->display);
 }
 
 Client* client_find(Window win) {
@@ -130,6 +133,7 @@ Client* client_find(Window win) {
 }
 
 void client_redraw(XConf* x, Client* c) {
+    puts("redraw");
     XftColor clr;
     xftcolor(x, &clr, -1);
     XftDrawStringUtf8(c->xft, &clr, x->font, 0, x->font->ascent, (const FcChar8*)c->name, strlen(c->name));
@@ -145,7 +149,13 @@ void client_redraw(XConf* x, Client* c) {
 static void xbtnpress(XConf* x, XEvent* e) {
     printf("btn\n");
     /*
-        *
+        * B1 Grow window a little
+        * B1 Drag: Resize vertically or  move to column
+        * B2: Stack windows with titlebars visible but only one window expanded
+        * B3: Maximize in column
+        * B1+B2: Kill window
+        * Shift+B1: Move one column to the left
+        * Shift+B1: Move one column to the right
     */
 }
 
@@ -189,21 +199,17 @@ static void xdestroynotify(XConf* x, XEvent* e) {
     /* This is where we cleanup windows we care about. destroy them and their frames. */
     Client* c = client_find(e->xdestroywindow.window);
     if (c) {
-        //int y = c->y, h = c->h;
-        Client* next = c->next;
-        printf("c: %p next: %p\n", (void*)c, (void*)next);
-//        if (next) {
-//            next->y = y, next->h += h;
-//            client_config(x, next, next->x, next->y, next->w, next->h);
-//            client_raise(x, next);
-//        }
-
-        for (Client* n = Clients; n; n = n->next) {
-            printf("%p ", (void*)n);
+        int y = c->y, h = c->h;
+        if (c->prev) {
+            c->prev->h += h;
+            client_config(x, c->prev, c->prev->x, c->prev->y, c->prev->w, c->prev->h);
+            client_raise(x, c->prev);
+        } else if (c->next) {
+            c->next->y = y, c->next->h += h;
+            client_config(x, c->next, c->next->x, c->next->y, c->next->w, c->next->h);
+            client_raise(x, c->next);
         }
-        puts("");
-
-        Clients = client_del(x, Clients, c);
+        client_del(x, c);
     }
 }
 
@@ -212,12 +218,11 @@ static void xclientmsg(XConf* x, XEvent* e) {
 }
 
 static void xpropnotify(XConf* x, XEvent* e) {
-    printf("prop\n");
     /*
         We only care about updating the window titles here for now
     */
     Client* c = client_find(e->xproperty.window);
-    if (c && e->xproperty.atom == XA_WM_NAME) {
+    if (c) {
         c->name = xfree(c->name);
         XFetchName(x->display, c->win, &c->name);
         client_redraw(x, c);
-- 
2.51.0