phosh: Scale monitor resolution

wl_output gives us the unscaled resolution. We need to scale that with the currently set scale. This brings the settings menu back to the screen and makes the favorites menu fit.

Closes: #30 (closed)

src/phosh.c

@@ -601,15 +601,24 @@ void
 phosh_shell_get_usable_area (PhoshShell *self, gint *x, gint *y, gint *width, gint *height)
 {
   PhoshMonitor *monitor = NULL;
+  PhoshShellPrivate *priv;
   gint w, h;
   gint scale;
 
+  g_return_if_fail (PHOSH_IS_SHELL (self));
+  priv = phosh_shell_get_instance_private (self);
+
   monitor = phosh_shell_get_primary_monitor (self);
   g_return_if_fail(monitor);
 
   scale = monitor->scale ? monitor->scale : 1;
-  w = monitor->width / scale;
-  h = monitor->height / scale - PHOSH_PANEL_HEIGHT - PHOSH_HOME_HEIGHT;
+  if (priv->rotation) {
+    w = monitor->height / scale;
+    h = monitor->width / scale - PHOSH_PANEL_HEIGHT - PHOSH_HOME_HEIGHT;
+  } else {
+    w = monitor->width / scale;
+    h = monitor->height / scale - PHOSH_PANEL_HEIGHT - PHOSH_HOME_HEIGHT;
+  }
 
   if (x)
     *x = 0;