Improve profile display in planner

This patch allows the planner to save the last manually-entered
dive planner point of a dive plan. When the plan has been saved
and re-opened for edit, the time of the last-entered dive planner
point is used to ensure that dive planning continues from the same
point in the profile as was when the original dive plan was saved.
Mechanism:

1) In dive.h, create a new dc attribute dc->last_manual_time
   with data type of duration_t.
2) In diveplanner.c, ensure that the last manually-entered
   dive planner point is saved in dc->last_manual_time.
3) In save-xml.c, create a new XML attribute for the <divecomputer>
   element, named last-manual-time. For dive plans, the element would
   now look like:
   <divecomputer model='planned dive' last-manual-time='31:17 min'>
4) In parse-xml.c, insert code that recognises the last-manual-time
   XML attribute, reads the time value and assigns this time to
   dc->last_manual_time.
5) In diveplannermodel.cpp, method DiveplannerPointModel::loadfromdive,
   insert code that sets the appropriate boolean value to dp->entered
   by comparing newtime (i.e. time of dp) with dc->last_manual_time.
6) Diveplannermodel.cpp also accepts profile data from normal dives in
   the dive log, whether hand-entered or loaded from dive computer. It
   looks like the reduction of dive points for dives with >100 points
   continues to work ok.
The result is that when a dive plan is saved with manually entered
points up to e.g. 10 minutes into the dive, it can be re-opened for edit
in the dive planner and the planner re-creates the plan with manually
entered points up to 10 minutes. The rest of the points are "soft"
points, shaped by the deco calculations of the planner.

Improvements: Improve code for profile display in dive planner

This responds to #1052.
Change load-git.c and save-git.c so that the last-manual-time is
also saved in the git-format dive log.

Several stylistic changes in text for consistent C source code.

Improvement of dive planner profile display:

Do some simplification of my alterations to diveplannermodel.cpp

Two small style changes in planner.c and diveplannermodel.cpp
as requested ny @neolit123

Signed-off-by: Willem Ferguson <willemferguson@zoology.up.ac.za>

1 files changed, 4 insertions, 1 deletions

diff --git a/core/planner.c b/core/planner.c
index 2c5ad3d95..6b9b075ea 100644
--- a/core/planner.c
+++ b/core/planner.c
@@ -259,7 +259,7 @@ static void create_dive_from_plan(struct diveplan *diveplan, struct dive *dive,
 	struct event *ev;
 	cylinder_t *cyl;
 	int oldpo2 = 0;
-	int lasttime = 0;
+	int lasttime = 0, last_manual_point = 0;
 	depth_t lastdepth = {.mm = 0};
 	int lastcylid;
 	enum dive_comp_type type = dive->dc.divemode;
@@ -342,6 +342,7 @@ static void create_dive_from_plan(struct diveplan *diveplan, struct dive *dive,
 		sample[-1].setpoint.mbar = po2;
 		sample->setpoint.mbar = po2;
 		sample->time.seconds = lasttime = time;
+		if (dp->entered) last_manual_point = dp->time;
 		sample->depth = lastdepth = depth;
 		sample->manually_entered = dp->entered;
 		sample->sac.mliter = dp->entered ? prefs.bottomsac : prefs.decosac;
@@ -354,6 +355,8 @@ static void create_dive_from_plan(struct diveplan *diveplan, struct dive *dive,
 		finish_sample(dc);
 		dp = dp->next;
 	}
+	dive->dc.last_manual_time.seconds = last_manual_point;
+
 	dc->divemode = type;
 #if DEBUG_PLAN & 32
 	save_dive(stdout, &displayed_dive);