[script] Move windows to not start at negative coordinates

When multiple screens are found, the system will now arrange them so they are
all centered, and the top left corner of the largest screen is at 0,0.
No changes to any scripts are needed.

diff --git a/src/plugins/splash/script/script-lib-sprite.c b/src/plugins/splash/script/script-lib-sprite.c
index 719df9db7783a73594bdf21bd9309f4e10b4b90d..8185d7d7b0a1bf95fae94657ecbc45ee87e8b113 100644 (file)
--- a/src/plugins/splash/script/script-lib-sprite.c
+++ b/src/plugins/splash/script/script-lib-sprite.c
@@ -474,15 +474,24 @@ script_lib_sprite_data_t *script_lib_sprite_setup (script_state_t *state,
                                                    ply_list_t     *pixel_displays)
 {
   ply_list_node_t *node;
-  int centre_x, centre_y;
+  unsigned int max_width, max_height;
   script_lib_sprite_data_t *data = malloc (sizeof (script_lib_sprite_data_t));
 
   data->class = script_obj_native_class_new (sprite_free, "sprite", data);
   data->sprite_list = ply_list_new ();
   data->displays = ply_list_new ();
 
-  centre_x = 0;
-  centre_y = 0;
+  max_width = 0;
+  max_height = 0;
+
+  for (node = ply_list_get_first_node (pixel_displays);
+       node;
+       node = ply_list_get_next_node (pixel_displays, node))
+    {
+      ply_pixel_display_t *pixel_display = ply_list_node_get_data (node);
+      max_width = MAX(max_width, ply_pixel_display_get_width (pixel_display));
+      max_height = MAX(max_height, ply_pixel_display_get_height (pixel_display));
+    }
 
   for (node = ply_list_get_first_node (pixel_displays);
        node;
@@ -491,18 +500,10 @@ script_lib_sprite_data_t *script_lib_sprite_setup (script_state_t *state,
       ply_pixel_display_t *pixel_display = ply_list_node_get_data (node);
       script_lib_display_t *script_display = malloc (sizeof(script_lib_display_t));
       script_display->pixel_display = pixel_display;
-      if (centre_x == 0)
-        {
-          script_display->x = 0;
-          script_display->y = 0;
-          centre_x = ply_pixel_display_get_width (pixel_display) / 2;
-          centre_y = ply_pixel_display_get_height (pixel_display) / 2;
-        }
-      else
-        {
-          script_display->x = centre_x - ply_pixel_display_get_width (pixel_display) / 2;
-          script_display->y = centre_y - ply_pixel_display_get_height (pixel_display) / 2;
-        }
+      
+      script_display->x = (max_width - ply_pixel_display_get_width (pixel_display)) / 2;
+      script_display->y = (max_height - ply_pixel_display_get_height (pixel_display)) / 2;
+      
       script_display->data = data;
       ply_pixel_display_set_draw_handler (pixel_display,
                                           (ply_pixel_display_draw_handler_t)