Allow selecting windows

Left click to activate a window.
Right click to raise a window (XXX: the wrong way).
Middle click to lower a window (XXX: the wrong way).

diff --git a/pager.c b/pager.c
index f5f05c0..86fd07a 100644 (file)
--- a/pager.c
+++ b/pager.c
@@ -13,6 +13,11 @@ static Atom num_desktops_atom, current_desktop_atom, client_list_atom, client_de
 static Atom shaded_state, skip_pager_state, hidden_state;
 static long desktop = -1;
 
+typedef struct {
+  Window *window;
+  DARect rect;
+} client_t;
+
 int error_handler(Display *display, XErrorEvent *event) {
   char buffer[512];
   int length;
@@ -58,6 +63,82 @@ long get_atom_long(Atom atom, Atom type, Window window) {
   return ret;
 }
 
+/* XXX: enumerate_clients_and_get_a_bunch_of_other_values() */
+void enumerate_clients(client_t ***clients, unsigned long *num_clients, unsigned long *active_desktop, unsigned long *active_window, unsigned int *dockapp_width, unsigned int *dockapp_height) {
+  Window root, dockapp_root, child;
+  unsigned int x, y, width, height, border, depth;
+  unsigned int root_width, root_height;
+  unsigned int dockapp_x, dockapp_y, dockapp_border, dockapp_depth;
+  double scale;
+  long *data;
+  long *states;
+  unsigned long i, j, num_states;
+  long client_desktop;
+  int draw;
+
+  /* XXX: Use _NET_DESKTOP_GEOMETRY. */
+  root_width = DisplayWidth(DADisplay, DefaultScreen(DADisplay));
+  root_height = DisplayWidth(DADisplay, DefaultScreen(DADisplay));
+
+  XGetGeometry(DADisplay, DAWindow, &dockapp_root, &dockapp_x, &dockapp_y, dockapp_width, dockapp_height, &dockapp_border, &dockapp_depth);
+  scale = (double) root_width / (double) *dockapp_width;
+
+  *active_window = get_atom_long(active_window_atom, XA_WINDOW, dockapp_root);
+  *active_desktop = get_atom_long(current_desktop_atom, XA_CARDINAL, DefaultRootWindow(DADisplay));
+
+  get_atom_longs(client_list_atom, XA_WINDOW, dockapp_root, &data, num_clients);
+
+  *clients = (client_t **) malloc(sizeof(client_t *) * *num_clients);
+  if (! *clients) {
+    fprintf(stderr, "Out of memory for clients!\n");
+    exit(111);
+  }
+
+  for (i = 0; i < *num_clients; i++) {
+    (*clients)[i] = (client_t *) malloc(sizeof(client_t));
+    if (! (*clients)[i]) {
+      fprintf(stderr, "Out of memory for client!\n");
+      exit(111);
+    }
+    (*clients)[i]->window = 0;
+
+    /* Check the window is on our desktop (or all desktops). */
+    client_desktop = get_atom_long(client_desktop_atom, XA_CARDINAL, data[i]);
+    if (client_desktop != desktop && client_desktop != -1) continue;
+
+    /* Try to get its dimensions. */
+    if (! XGetGeometry(DADisplay, data[i], &root, &x, &y, &width, &height, &border, &depth)) continue;
+    if (! XTranslateCoordinates(DADisplay, data[i], root, x, y, &x, &y, &child)) continue;
+
+    /* Make sure it isn't hidden or shaded. */
+    draw = 1;
+    get_atom_longs(client_state_atom, XA_ATOM, data[i], &states, &num_states);
+    for (j = 0; j < num_states; j++) {
+      if (states[j] == shaded_state) draw = 0;
+      if (states[j] == skip_pager_state) draw = 0;
+      if (states[j] == hidden_state) draw = 0;
+    }
+    if (! draw) continue;
+
+    (*clients)[i]->window = data[i];
+
+    /* Scale it. */
+    (*clients)[i]->rect.x = (double) x / scale;
+    (*clients)[i]->rect.y = (double) y / scale;
+    (*clients)[i]->rect.width = (double) width / scale;
+    (*clients)[i]->rect.height = (double) height / scale;
+  }
+}
+
+void destroy_clients(client_t ***clients, unsigned long num_clients) {
+  unsigned long i;
+
+  if (! *clients) return;
+
+  for (i = 0; i < num_clients; i++) free((*clients)[i]);
+  free(*clients);
+}
+
 void setup_GCs() {
   XGCValues gcv;
 
@@ -103,76 +184,86 @@ void draw_relief(Pixmap pixmap, unsigned int width, unsigned int height, GC desk
   XDrawLine(DADisplay, pixmap, dockapp_border1GC, width - 1, 1, width - 1, height - 2);
 }
 
-void change() {
+int clicked(DARect *rect, int x, int y) {
+  if (rect->x > x) return 0;
+  if (rect->y > y) return 0;
+  if (rect->x + rect->width < x) return 0;
+  if (rect->y + rect->height < y) return 0;
+  return 1;
+}
+
+void change(int button, int state, int x, int y) {
+  client_t **clients;
+  unsigned long i, num_clients;
+  unsigned long active_desktop, active_window;
+  unsigned int dockapp_width, dockapp_height;
   XEvent event;
   Window root = DefaultRootWindow(DADisplay);
 
   event.type = ClientMessage;
   event.xclient.type = ClientMessage;
   event.xclient.window = root;
-  event.xclient.message_type = current_desktop_atom;
+  event.xclient.message_type = 0;
   event.xclient.format = 32;
-  event.xclient.data.l[0] = desktop;
+
+  enumerate_clients(&clients, &num_clients, &active_desktop, &active_window, &dockapp_width, &dockapp_height);
+  for (i = num_clients - 1; i > 0; i--) {
+    if (! clients[i]->window) continue;
+    if (! clicked(&clients[i]->rect, x, y)) continue;
+
+    /* XXX: Use NET_RESTACK_WINDOW instead. */
+    if (button == 3 || button == 4) {
+      XRaiseWindow(DADisplay, clients[i]->window);
+    }
+    else if (button == 2 || button == 5) {
+      XLowerWindow(DADisplay, clients[i]->window);
+    }
+    else {
+      event.xclient.window = clients[i]->window;
+      event.xclient.message_type = active_window_atom;
+      event.xclient.data.l[0] = 2;
+      event.xclient.data.l[1] = 0; /* XXX: NET_WM_USER_TIME */
+      event.xclient.data.l[2] = 0;
+    }
+    break;
+  }
+  destroy_clients(&clients, num_clients);
+
+  if (! event.xclient.message_type) {
+    event.xclient.message_type = current_desktop_atom;
+    event.xclient.data.l[0] = desktop;
+  }
 
   XSendEvent(DADisplay, root, False, SubstructureNotifyMask, &event);
 }
 
 void page() {
-  Window root, dockapp_root, child, active_window;
+  Window child, active_window;
   XWindowAttributes attr;
   Pixmap pixmap;
   DARect rect;
   long i, j;
-  unsigned long num_clients, num_states;
-  unsigned int root_width, root_height;
-  unsigned int dockapp_x, dockapp_y, dockapp_width, dockapp_height, dockapp_border, dockapp_depth;
-  unsigned int x, y, width, height, border, depth;
-  double scale;
-  long *clients, *states;
+  unsigned long num_clients;
   long client_desktop, active_desktop;
   int active;
   GC gc;
+  client_t **clients;
+  unsigned int dockapp_width, dockapp_height;
 
-  /* XXX: Use _NET_DESKTOP_GEOMETRY. */
-  root_width = DisplayWidth(DADisplay, DefaultScreen(DADisplay));
-  root_height = DisplayWidth(DADisplay, DefaultScreen(DADisplay));
+  enumerate_clients(&clients, &num_clients, &active_desktop, &active_window, &dockapp_width, &dockapp_height);
 
   pixmap = DAMakePixmap();
-  XGetGeometry(DADisplay, pixmap, &dockapp_root, &dockapp_x, &dockapp_y, &dockapp_width, &dockapp_height, &dockapp_border, &dockapp_depth);
-  scale = (double) root_width / (double) dockapp_width;
-
-  active_window = get_atom_long(active_window_atom, XA_WINDOW, dockapp_root);
-  active_desktop = get_atom_long(current_desktop_atom, XA_CARDINAL, DefaultRootWindow(DADisplay));
-
   if (active_desktop == desktop) gc = active_desktopGC;
   else gc = inactive_desktopGC;
   draw_relief(pixmap, dockapp_width, dockapp_height, gc);
 
-  get_atom_longs(client_list_atom, XA_WINDOW, dockapp_root, &clients, &num_clients);
   for (i = 0; i < num_clients; i++) {
-    int draw = 1;
-    client_desktop = get_atom_long(client_desktop_atom, XA_CARDINAL, clients[i]);
-    if (client_desktop != desktop && client_desktop != -1) continue;
-    if (! XGetGeometry(DADisplay, clients[i], &root, &x, &y, &width, &height, &border, &depth)) continue;
-    if (! XTranslateCoordinates(DADisplay, clients[i], root, x, y, &x, &y, &child)) continue;
-    get_atom_longs(client_state_atom, XA_ATOM, clients[i], &states, &num_states);
-    for (j = 0; j < num_states; j++) {
-      if (states[j] == shaded_state) draw = 0;
-      if (states[j] == skip_pager_state) draw = 0;
-      if (states[j] == hidden_state) draw = 0;
-    }
-    if (! draw) continue;
-
-    rect.x = (double) x / scale;
-    rect.y = (double) y / scale;
-    rect.width = (double) width / scale;
-    rect.height = (double) height / scale;
-
-    if (rect.width < 2 || rect.height < 2) gc = window_border1GC;
-    else if (clients[i] == active_window) gc = active_windowGC;
+    if (! clients[i]->window) continue;
+    if (clients[i]->rect.width < 2 || clients[i]->rect.height < 2) gc = window_border1GC;
+    else if (clients[i]->window == active_window) gc = active_windowGC;
     else gc = inactive_windowGC;
-    XFillRectangle(DADisplay, pixmap, gc, rect.x, rect.y, rect.width, rect.height);
-    if (rect.width < 2 || rect.height < 2) continue;
+    XFillRectangle(DADisplay, pixmap, gc, clients[i]->rect.x, clients[i]->rect.y, clients[i]->rect.width, clients[i]->rect.height);
+    if (clients[i]->rect.width < 2 || clients[i]->rect.height < 2) continue;
 
     /* Thumbnail. */
 #if 0
@@ -194,12 +285,14 @@ void page() {
       XSync(DADisplay, False);
 #endif
 
-    XDrawLine(DADisplay, pixmap, window_border1GC, rect.x, rect.y, rect.x, rect.y + rect.height - 2);
-    XDrawLine(DADisplay, pixmap, window_border1GC, rect.x + 1, rect.y, rect.x + rect.width - 1, rect.y);
-    XDrawLine(DADisplay, pixmap, window_border2GC, rect.x, rect.y + rect.height - 1, rect.x + rect.width - 1, rect.y + rect.height - 1);
-    XDrawLine(DADisplay, pixmap, window_border2GC, rect.x + rect.width - 1, rect.y + 1, rect.x + rect.width - 1, rect.y + rect.height - 2);
+    XDrawLine(DADisplay, pixmap, window_border1GC, clients[i]->rect.x, clients[i]->rect.y, clients[i]->rect.x, clients[i]->rect.y + clients[i]->rect.height - 2);
+    XDrawLine(DADisplay, pixmap, window_border1GC, clients[i]->rect.x + 1, clients[i]->rect.y, clients[i]->rect.x + clients[i]->rect.width - 1, clients[i]->rect.y);
+    XDrawLine(DADisplay, pixmap, window_border2GC, clients[i]->rect.x, clients[i]->rect.y + clients[i]->rect.height - 1, clients[i]->rect.x + clients[i]->rect.width - 1, clients[i]->rect.y + clients[i]->rect.height - 1);
+    XDrawLine(DADisplay, pixmap, window_border2GC, clients[i]->rect.x + clients[i]->rect.width - 1, clients[i]->rect.y + 1, clients[i]->rect.x + clients[i]->rect.width - 1, clients[i]->rect.y + clients[i]->rect.height - 2);
   }
 
+  destroy_clients(&clients, num_clients);
+
   DASetPixmap(pixmap);
   XFreePixmap(DADisplay, pixmap);
 }