The way cairo does scaling is really really inconvenient, and one of the
things in cairo that is fundamentally mis-designed.
Cairo scaling always affects both coordinates and object sizes, and the
two can apparently never be split apart. Which is very much not what we
want: we want just coordinate scaling.
So we cannot use 'cairo_scale()' to scale our canvas, because that
screws up lines and text size too. And no, you cannot "fix" that by
de-scaling the line size etc - because line size is one-dimensional, so
you can't undo the (different) scaling in X/Y.
Sad. I realize that often you do want to scale object size with
coordinate transformation, but quite often you *don't* want to.
Yeah, we could do random context save/restore in odd places etc, but
that's just a sign of the bad design of cairo scaling.
Work around it by introducing our own graphics context with scaling,
which does it right. I don't like this, but it seems to be better than
the alternatives.
Use a recursive (instead of iterative) minmax depth finder
This is a bit more natural, and makes it much easier to do scale
independence. In particular, I want to make it possible to grow and
shrink the graph, and this should make it particularly simple to react
by giving more or fewer minmax points.
Do output unit conversion in the dive info window too
This should take care of it all, unless I missed some case.
Now we should just save the default units somewhere, and I should do the
divelist update much cleaner (instead of re-doing the divelist entirely,
it should just repaint it - now we lose the highlited dive etc).
Honor depth unit settings when plotting the depth profile
This shows the depth properly in meter or feet depending on unit
selection.
It also changes the horizontal depth rulers to be at 10m/30ft intervals
rather than the previous 15ft. With the textual depth markers, the
horizontal lines aren't as important any more.
Fix drawing artifacts with dives that have samples past the dive duration
The UEMIS Zurich SDA keeps recording samples for quite a while after the
dive ended. These provide no additional information, but confuse our
drawing algorithm as they can cause us to draw both the depth and tank
pressure plots beyond the right edge of our canvas.
Stop drawing if sample->time.seconds is larger than dive->duration.seconds.
Add some information about properly formatted commit messages
It does seem like a lot of github users are not used to good commit
message rules, and may never have used git for a project that actually
cares about good logs and nice summary lines.
Scott Chacon [Tue, 6 Sep 2011 19:32:51 +0000 (12:32 -0700)]
Add more explicit contributing explanation
Most developers on GitHub are not used to projects that use the Signed-off-by convention.
They do, however, tend to read the READMEs to see which conventions the author prefers
to follow. If you are explicit about what you prefer in the README with easy to follow
instructions, it is more likely people will follow those conventions.
Add some actual numbers to the depth plot too. Do it by finding the
deepest points (within a five-minute rolling window), and show the
depths of those points.
Sure, we could have just labeled the depth markers, but this seems
nicer. But what do I know - I'm not exactly famous for my GUI design.
Only draw the pressure line to the final data point
(duration / end.mbar) if we haven't already drawn samples
past that point (as the UEMIS records pressure data for a
number of additional samples after the actual dive has ended)
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
[ Changed to use 'last actual drawn sample time that had pressure
data' instead of 'last sample time' - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Repaint the dives in dive_list_update_dives() instead of in callers
Each caller ends up needing it, and I missed another one. So rather
than update the other caller, just do it in dive_list_update_dives() and
we can stop worrying about it.
Merge branch 'open-files' of git://github.com/nathansamson/diveclog
* 'open-files' of git://github.com/nathansamson/diveclog:
Report errors when opening files
Make it possible to load multiple files at once.
Open File works. I refactored the code and introduced a new type. I never used it as a pointer (their was no real reason), but I'm not really satisfied.
Open File works. I refactored the code and introduced a new type. I never used it as a pointer (their was no real reason), but I'm not really satisfied.
There's a big comment there now about what is going on. It took me a
while to understand how the crazy seven-tank uemis dive computer
information actually works.
So the Uemis computer has 4 different "tank profiles":
- single tank air (0)
- single tank nitrox (1)
- two-tank nitrox (2)
- three-tank nitrox (3)
and the computer always lists all seven tank cases (because that's how
you fill them in).
Depending on the "gas.template" you are supposed to then *use* just one
particular profile. Why the computer doesn't just give you the tanks
for that one profile, who knows? It seems to be more of the same "Uemis
dive data isn't so much about the dive, it's about dive computer state"
mentality.
So we first get the profile information, and then based on that we need
to pick the right tanks from the set of seven that we're presented with.
Turn dive depth, temperature and duration into xml attributes
This makes the xml save-file look way nicer: it's both smaller and
better organized. Using individual xml nodes for random small details
is silly.
The duration even parses exactly the same, because it still ends up
being '.depth.duration' (now it's the 'duration' attribute of the dive
node, it used to be the 'duration' child node of the dive node).
Doing per-dive cylinder start/end pressures is insane, when we can have
up to eight cylinders. The cylinder start/end pressure cannot be per
dive, it needs to be per cylinder.
This makes the save format cleaner too, we have all the cylinder data in
just one place.
"I also wanted to "zebra" color the divelist by setting the rules-hint
to TRUE. but I noticed it was already set explicitly to FALSE (even
if this is the default).
If this is just an accidental copy paste from some tutorial you can
experiment (set it to TRUE) and see what you like most."
It was indeed just copy-paste from some tutorial, and the zebra-coloring
does look nicer, doesn't it?
Instead of always using three decimal digits, use 1-3 digits. But do
use at least one, even for integer numbers, just because it makes it so
much clearer that we're dealing with potential fractional values.
I don't necessarily want to show three decimal digits when one or two
would do. So prepare for that by using a helper. This doesn't actually
change the printout yet.
This is some seriously crazy stuff. Instead of making sense as a
divelog, the uemis xml makes more sense as a "dive computer settings
dump".
And I guess I can see why they'd do that. But it makes parsing it just
incredibly annoying. The thing is more of a "these are the
configurations I support as a dive computer thing" than a "this was the
tank you were diving with".
Make a guess at the cylinder description from the size and pressure
I'll want to also add a way to override/set the cylinder type: both
manually by just setting a size in liters, and by picking from some list
of standard cylinder sizes.
For example, it looks like most of my dives are marked as having
12-liter cylinders. That is probably some default from Suunto Dive
Manager, or from whatever Dirk did. It's almost certainly not right for
any of them: as far as I know, the standard cylinders for Lahaina Divers
(which is likely most of the warm water dives) are AL72's for air, and
AL80's for Nitrox.
That would be a 10L and a 11.1L tank respectively, afaik. I don't know
what a 12-liter tank would be or where that size comes from.
Anyway, the LP85+ tank designation for some of the dives looks more
likely: that's one of the common sizes I've used for local dives. So
the size of that thing is much more probably correct.
We don't want to override potentially more exact values for water
temperature etc either. The sample save interval may be longer than
some internally kept state of key per-dive values like that.
Generate date string for the dive list dynamically
.. and sort based on the 'time_t' value itself.
This allows us to use a more compact date format that doesn't need to
sort alphabetically, because sorting by date is always based on the date
value. So we can use just a two-digit year, and skip the seconds, to
keep the column narrow, while still sorting correctly.
Also, "Depth" is a nice header string, but it is wider than the column
itself, which makes the whole column wider than necessary. So put the
units in the header instead of in the string, keeping things narrow.
Merge branch 'ui-improvements' of https://github.com/nathansamson/diveclog
* 'ui-improvements' of https://github.com/nathansamson/diveclog:
Split the dive list in columns. Columns are sortable now (name = date, depth, duration)
Remove the redundant frames in the notebook. Closes #9
Use a pane so the dive list can be made wider or smaller to the users wishes
Merge branch 'compiler-warning' of https://github.com/nathansamson/diveclog
* 'compiler-warning' of https://github.com/nathansamson/diveclog:
Removed the unused startemp and enttemp calculations. This fixes a compiler warning too.
Fix up trivial conflict in dive.c due to the temperature simplification
(commit 9961c7f89ce6: "Remove redundant temperature readings").
So we don't want to save working pressure, but cylinder type knowledge
would be lovely and useful. And we can probably make a good initial
guess, or at least let people fill it in later.
It was a mistake to save it - and I did it just because other dive
managers did. It's a totally nonsensical measure, and nobody cares.
The only thing that matters is the size of the cylinder, and the
*actual* pressures. Those give actual air consumption numbers, and are
meaningful and unambiguous.
So the "working pressure" for a cylinder is pointless except for two
things:
- if you don't know the actual physical size, you need the "working
pressure" along with the air size (eg "85 cuft") in order to compute
the physical size. So we do use the working pressure on *input* from
systems that report cylinder sizes that way.
- People may well want to know what kind of cylinder they were diving,
and again, you can make a good guess about this from the working
pressure. So saving information like "HP100+" for the cylinder would
be a good thing.
But notice how in neither case do we actually want to save the working
pressure itself. And in fact saving it actually makes the output format
ambiguous: if we give both size and working pressure, what does 'size'
mean? Is it physical size in liters, or air size in cu ft?
So saving working pressure is just wrong. Get rid of it.
I'm going to add some kind of "cylinder description" thing, which we can
save instead (and perhaps guess standard cylinders from input like the
working pressure from dive logs that don't do this sanely - which is all
of them, as far as I can tell).
Uppercase first letter for each label word
Tweak the paddings for easier reading
Rename File menu to Log menu
Add a separator before Quit in the Log menu
Remove frame in extended diving info and add 6px padding
Merge branch 'fix-entries' of https://github.com/nathansamson/diveclog
* 'fix-entries' of https://github.com/nathansamson/diveclog:
Word wrap the info textview. Also do not show the scrollbars if not necessary.
Change location to a text entry instead of text view.
Update gitignore for the name-change of the executable
It's not called 'parse' any more. And I think I should rename 'divelog'
too to something more unique. Right now the working name for the
project is 'diveclog' (kind of like 'jdivelog') , but I'm not convinced
that the "C implementation" part is really important enough to make a
point of long-term.
"subsurface"? I don't know. Maybe I should follow the "name all
projects after myself" mantra. "divenut"?
Oops. I forgot to 'fclose()' the file after saving the xml
It never actually triggered anything for me, but any buffered data might
be lost, especially if you force-exit the application after saving a
dive log.
This probably explains a corrupted (truncated) dive file report from
Nathan Samson.
Add 'Quit' menu item, and fix invisible "File" on gtk2
I didn't even notice that the "File" part of the file menu no longer
showed up, since the keyboard accelerator for ^S worked fine.. But
apparently there's no default label associated with GTK_STOCK_FILE in
gtk2, so the "File" text went away with the conversion to GtkUIManager
in commit 4d62478e14fe ("Use the newer GtkUIManager for menu creation.")
The addition of a Quit menu entry with the associated keyboard
accelerator also makes ^Q "just work".
Of course, if we actually tracked dirty state etc, we could perhaps ask
the user whether they wanted to save or something. But I'm not exactly
famous for my GUI chops, so ..
If given multiple dives at the same time, just de-dup the dives. This
happens when you've dumped the whole dive-computer several times, and
some dives show up in multiple dumps.
When de-duping, try to avoid dropping data. So if one dive has notes
attached to it, and the other one does not, pick the notes from the dive
that does have them. Obvious stuff like that.
The sample merge is also written so that it should be possible to merge
two dives. Which we don't actually do yet.
It looks like the "units.pressure" setting is only about the units that
things are *shown* in on the wrist computer: the units in the file are
always in bar (or rather, centi-bar).
Which is definitely the right thing to do, and means that we shouldn't
care about parsing the units setting. It's purely about how something
is shown, not about parsing.
That's probably true of the other units too, but let's see when I have
more data to go on.
Use 'units' value instead of guessing based on integer/FP
We still end up guessing based on magnitude of the value, though: it
might be 'bar' or 'mbar', we end up picking one or the other based on
just how big the value is.
I should make it look at any possible explicit units too, since at least
with good xml, they exist. Of course, the only good xml I've seen so
far is the one we generate ourselves ;)
Hack up some very rudimentary support for the Uemis xml format
I think I'll need to re-organize the handling of per-format code, but
for now we just mix it all up.
The uemis conversion is also questionable even for just the small parts
I do. Does it really do "centiPSI"? That sounds crazy. I'm waiting for
Dirk to send me some actual human-readable output from the dives, right
now some of it is just rough guesses.
I think it should be legal xml, but whatever. libxml2 is very unhappy,
and complains when loading - even if I escape them. So let's just
replace the low escape characters with '?'.
The only thing to ever care was my test-case, I suspect.
Use the "empty element" form for samples that don't have any events
associated with them (and none do, right now). This avoids that
annoying "</sample>" crud.
And output the units in the output helpers, so that you can't forget
them even if you try.
When we see a number like 23.145, we'd better always also see a unit.
It's just good practice. So add 'min' to duration (and use only two
digits for number of seconds), and 'm' to depth.
And write the date in international standard format.
Teach the date parser to also parse the international standard date format
The standard way to write a date is yyyy-mm-dd, which is unambiguous and
sorts correctly.
We parsed that right in the 'datetime' case, but not in the normal date
case. And we do want to use that in our output format, exactly because
it's standard.
And also parse 'duration' for the dive duration. It's what we use when
saving, it just so happened that we ended up not parsing it right, but
then picking it up from the samples instead.
projects / ext / subsurface.git / log