Add dive tags and support invalid dives

This started out as a way to keep dives in the dive list but being able to
mark them as 'invalid' so they wouldn't be visible (with an option to
disable that feature).

Now it supports an (at this point, fixed) set of tags that can be assigned
to a dive with 'invalid' being just one of them (but one that is special
as it gets some additional support for hiding such dive and marking dives
as (in)valid from the divelist).

[Dirk Hohndel: merged with the latest code and minor changes for coding
	       style and consistency. Ensure divelist is marked as
	       modified when changing 'invalid' tag]

Signed-Off-By: Jozef Ivanecký (dodo.sk@gmail.com)
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/dive.h b/dive.h
index 11b003f68..24f2f37e8 100644
--- a/dive.h
+++ b/dive.h
@@ -28,6 +28,18 @@
 #define SEAWATER_SALINITY	10300
 #define FRESHWATER_SALINITY	10000
 
+/* Dive types definition */
+#define DTYPE_INVALID           1
+#define DTYPE_BOAT              2
+#define DTYPE_SHORE             4
+#define DTYPE_DRIFT             8
+#define DTYPE_DEEP              16
+#define DTYPE_CAVERN            32
+#define DTYPE_ICE               64
+#define DTYPE_WRECK             128
+#define DTYPE_CAVE              256
+#define DTYPE_ALTITUDE          512
+#define DTYPE_POOL              1024
 
 /*
  * Some silly typedefs to make our units very explicit.
@@ -342,6 +354,7 @@ struct dive {
 	pressure_t surface_pressure;
 	duration_t duration;
 	int salinity; // kg per 10000 l
+        int dive_tags;
 
 	struct divecomputer dc;
 };