Refactor layout code, rescale and reformat when changing level

eek/eek-keyboard.c

@@ -262,6 +262,8 @@ set_level_from_modifiers (EekKeyboard *self, EekKey *key)
 
     priv->old_level = level;
     eek_element_set_level (EEK_ELEMENT(self), level);
+
+    eek_layout_update_layout(self);
 }
 
 static void
@@ -528,6 +530,7 @@ eek_keyboard_init (EekKeyboard *self)
     self->priv->outline_array = g_array_new (FALSE, TRUE, sizeof (EekOutline));
     self->priv->keycodes = g_hash_table_new (g_direct_hash, g_direct_equal);
     eek_element_set_symbol_index (EEK_ELEMENT(self), 0, 0);
+    self->scale = 1.0;
 }
 
 /**

eek/eek-keyboard.h

@@ -62,6 +62,7 @@ struct _EekKeyboard
     struct xkb_keymap *keymap;
     int keymap_fd; // keymap formatted as XKB string
     size_t keymap_len; // length of the data inside keymap_fd
+    double scale;
 
     EekboardContextService *manager; // unowned reference
 };

eek/eek-layout.c

@@ -128,3 +128,61 @@ eek_layout_place_sections(EekKeyboard *keyboard)
     keyboard_bounds.height = total_height;
     eek_element_set_bounds(EEK_ELEMENT(keyboard), &keyboard_bounds);
 }
+
+static void scale_bounds_callback (EekElement *element,
+                                   gpointer    user_data);
+
+static void
+scale_bounds (EekElement *element,
+              gdouble     scale)
+{
+    EekBounds bounds;
+
+    eek_element_get_bounds (element, &bounds);
+    bounds.x *= scale;
+    bounds.y *= scale;
+    bounds.width *= scale;
+    bounds.height *= scale;
+    eek_element_set_bounds (element, &bounds);
+
+    if (EEK_IS_CONTAINER(element))
+        eek_container_foreach_child (EEK_CONTAINER(element),
+                                     scale_bounds_callback,
+                                     &scale);
+}
+
+static void
+scale_bounds_callback (EekElement *element,
+                       gpointer    user_data)
+{
+    scale_bounds (element, *(gdouble *)user_data);
+}
+
+void
+eek_layout_scale_keyboard(EekKeyboard *keyboard, gdouble scale)
+{
+    gsize n_outlines;
+
+    scale_bounds (EEK_ELEMENT(keyboard), scale);
+
+    n_outlines = eek_keyboard_get_n_outlines (keyboard);
+    for (guint i = 0; i < n_outlines; i++) {
+        EekOutline *outline = eek_keyboard_get_outline (keyboard, i);
+        gint j;
+
+        for (j = 0; j < outline->num_points; j++) {
+            outline->points[j].x *= scale;
+            outline->points[j].y *= scale;
+        }
+    }
+
+    keyboard->scale = scale;
+}
+
+void
+eek_layout_update_layout(EekKeyboard *keyboard)
+{
+    eek_layout_scale_keyboard(keyboard, 1.0 / keyboard->scale);
+    eek_layout_place_sections(keyboard);
+    eek_layout_scale_keyboard(keyboard, 1.0 / keyboard->scale);
+}

eek/eek-layout.h

@@ -57,5 +57,9 @@ GType        eek_layout_get_type  (void) G_GNUC_CONST;
 
 void         eek_layout_place_sections(EekKeyboard *keyboard);
 
+void         eek_layout_scale_keyboard(EekKeyboard *keyboard, gdouble scale);
+
+void         eek_layout_update_layout(EekKeyboard *keyboard);
+
 G_END_DECLS
 #endif  /* EEK_LAYOUT_H */

eek/eek-xml-layout.c

@@ -943,7 +943,9 @@ eek_xml_layout_real_create_keyboard (EekboardContextService *manager,
         return NULL;
     }
 
-    /* Fit keyboard in the given width and hight. */
+    eek_layout_place_sections(keyboard);
+
+    /* Fit keyboard in the given width and height. */
     scale_keyboard (keyboard, initial_width, initial_height);
 
     /* Use pre-defined modifier mask here. */
@@ -1277,9 +1279,6 @@ parse_symbols (const gchar *path, EekKeyboard *keyboard, GError **error)
         return FALSE;
     }
     symbols_parse_data_free (data);
-
-    eek_layout_place_sections(keyboard);
-
     return TRUE;
 }
 
@@ -1358,43 +1357,12 @@ parse_keyboards (const gchar *path, GError **error)
     return keyboards;
 }
 
-static void scale_bounds_callback (EekElement *element,
-                                   gpointer    user_data);
-
-static void
-scale_bounds (EekElement *element,
-              gdouble     scale)
-{
-    EekBounds bounds;
-
-    eek_element_get_bounds (element, &bounds);
-    bounds.x *= scale;
-    bounds.y *= scale;
-    bounds.width *= scale;
-    bounds.height *= scale;
-    eek_element_set_bounds (element, &bounds);
-
-    if (EEK_IS_CONTAINER(element))
-        eek_container_foreach_child (EEK_CONTAINER(element),
-                                     scale_bounds_callback,
-                                     &scale);
-}
-
-static void
-scale_bounds_callback (EekElement *element,
-                       gpointer    user_data)
-{
-    scale_bounds (element, *(gdouble *)user_data);
-}
-
 static void scale_keyboard (EekKeyboard *keyboard,
                             gdouble      width,
                             gdouble      height)
 {
     gdouble scale;
     EekBounds bounds;
-    gsize n_outlines;
-    guint i;
 
     eek_element_get_bounds (EEK_ELEMENT(keyboard), &bounds);
 
@@ -1403,18 +1371,7 @@ static void scale_keyboard (EekKeyboard *keyboard,
     else
         scale = height / bounds.height;
 
-    scale_bounds (EEK_ELEMENT(keyboard), scale);
-
-    n_outlines = eek_keyboard_get_n_outlines (keyboard);
-    for (i = 0; i < n_outlines; i++) {
-        EekOutline *outline = eek_keyboard_get_outline (keyboard, i);
-        gint j;
-
-        for (j = 0; j < outline->num_points; j++) {
-            outline->points[j].x *= scale;
-            outline->points[j].y *= scale;
-        }
-    }
+    eek_layout_scale_keyboard(keyboard, scale);
 }
 
 static gboolean