Diff: DisplayDefs.h

Revision:

37:f19b7e7449dc

Parent:

32:0e4f2ae512e2

Child:

42:7cbdfd2bbfc5

--- a/DisplayDefs.h	Sat Jan 25 00:00:02 2014 +0000
+++ b/DisplayDefs.h	Sat Jan 25 19:47:33 2014 +0000
@@ -17,11 +17,22 @@
     not_enough_ram,         ///< could not allocate ram for scanline
 } RetCode_t;
 
+/// type that manages locations, which is typically an x or y pixel location,
+/// which can range from -N to +N (even if the screen is 0 to +n). @see textloc_t.
+typedef int16_t loc_t;
+
+/// type that manages text locations, which are row or column values in
+/// units of character, not pixel. @see loc_t.
+typedef uint16_t textloc_t;
+
+/// type that manages dimensions of width or height, which range from 0 to N.
+typedef uint16_t dim_t;
+
 /// type that manages x,y pairs
 typedef struct
 {
-    uint16_t x;             ///< x value in the point
-    uint16_t y;             ///< y value in the point
+    loc_t x;             ///< x value in the point
+    loc_t y;             ///< y value in the point
 } point_t;
 
 /// color type definition to let the compiler help keep us honest.