Changes between Version 8 and Version 9 of TEXT_LAYOUT_LAZY

Timestamp:

02/14/10 12:40:38 (15 years ago)

Author:

kyli

Comment:

--

TEXT_LAYOUT_LAZY

@@ -70 +70 @@
 Create method '''validateNextArea()''' in HotTextLayout, which returns a new HotTextLayout with just one more valid area. Everything else will be re-used, so this method is as quick as HotAreaLayout permits.
 
+So, now we have to define who and how should treat the current HotLayout. There are generally 2 different approaches for the layout : The auto-chaining's and the TextFlow's.
+ 
+ * '''Auto chaining'''. The common between the auto-chaining and the layout is only the ''dryRun()'' method - the one which tells how many areas to add/remove from the current model. Its logic will be like this: 
+  * If the current layout's status is not VALID according to the current text and areas, does nothing.
+  * Otherwise, acts as it currently does.
+
+ * '''Text flow'''. This is about the ''textLayout()'' property in the text flow. It will: 
+  * If the last layout is VALID with the current text and areas, does nothing. 
+  * If the last layout is PARTIALLY_VALID with the current text and areas, does nothing. 
+  * Otherwise, calls update() to the last layout.
+
+Obviously, in general, the text flow makes INVALID layouts PARTIALLY_VALID ones, and the aut-chaining invalidates VALID ones. So, we need someone to completely validate PARTIALLY_VALID layouts. Here comes the 
+
+ * '''Background thread'''.
+
 
 = Implementation =