Profile: add white outline to all text

Goal: no blending between profile text and graph lines

Qt doesn't seem to provide an easy-to-go solution in terms
of styling the z-order of the pen and brush layers of a
QAbstractGraphicsShapeItem (or alternatively pen offset),
which is needed if for example one likes the pen not
to cover the text fill.

Calling QGraphicsSimpleTextItem->setPen() on small text can
cover bigger portions of the text, as the pen ends on top of the
fill and given the pen stroke path ends up scaling exactly
at the fill path border but not on the outside, for example.

Since we don't get quick control over that (and to avoid
the issue in a naive way), we set the text as bold
and the white outline lands over the "bold-ed" area of glyphs.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Added 2 new files to handle the common stuff for graphics.

Added 2 new files, graphicsview-common.h/cpp, that should have
the common stuff shared between the dive profile viewer and
the dive planner. the amount of duplicated code would be huge
if we go the road of two different classes for each one, but
since the planner took a more 'Qtish' way of behavior, in
comparisson to the profile - that's most a Cairo-To-Qt literal
translation, we cant easily merge the code without a complete
( and unwanted ) reestruturation of the profile code, thus,
this new files will serve as a bridge between them. Initially
I put there only the colors - since that's wat most easilyy
shareable.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Shared background for profile and planner.

Share the background for profile and planner. Those are not the same
class, but they should behave somwheat the same.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Added a method and a simple stub to position things using percentage.

Added a method and a simple stub to position things on the canvas
using percentage - this way I have a proper control on where I want
to put things on screen and it will make simpler for future changes,
even if the amount of code written is a bit bigger.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Change the rules so they work with percentages.

Changed the ruler so that they work with percentages,
also added a new method to the rules to set the size of the
ticks.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Added the last 'tick' to the rulers

The last tick to the rulers were missing, this was making
them to look odd, this make the rulers better looking,
but it caused the other-non-ported-yet-to-percent stuff
to behave in a not so good way, most visible one is the
handlers, gonna update them next.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Correct collors for the DivePlanner background.

Use the correct colors for the Background on the Dive Plan,
same as on the Profile.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Fixed positioning of the dive Handlers.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Use the same profile colors on the planer for the Time and Depth

Use the same profile colors on the planner for the Time and Depth
rulers. this needed a new method on the rulers - setColor, that
will call the setPen method and make everything behave properly.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Change the color of the DepthString based on it's deepness

Change the color of the DepthString based on it's deepness
on the profile planner. The new color of the profileString
( the string that follows the mouse stating how deep you are)
is now interpolated from SAMPLE_SHALLOW and SAMPLE_DEEP -
but since those two colors were the same and I had to change
it so that could work, I want somebody to check if my choose
of colors were ok.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Removed user-entered lines on the plan, keeping only deco.

Removed the user-entered lines on the plan, keeping only deco,
This way the graph looks way prettier and we don't loose any
functionality.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Make the 'increase depth' button to work.

Make the increase depth button to work, it also adds
a 'safety' stop at 150m, I know that this is deep, and
maybe we need to adjust this to a better safety stop.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Make the increase time button to work.

Makes the increase time button to work, it will
increase the minimum time, not the correct time of the
dive. the total time is calculated by the deco, and
does not come from this, unless the deco is smaller
than the minimum time.

This patch also fixes the problem where a button
would only click once - I was holding the first
clicked button as the 'mouse grabber', bad tomaz.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Merge branch 'nitpicks' of github.com:tcanabrava/subsurface
Silence some warnings

One of them actually looks like it was a bug...

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Revert "Profile: add white outline to all text"

This reverts commit 44c33742c26dcf9387b5c837c161e33ddc5eb060.

I mistakenly applied the wrong version of the patch.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Profile: add white outline to all text

To draw the white outline around profile text we trace a text path
using QPainterPath::addText() and then create a couple of
QGraphicsPathItem objects. One of the objects is outlined using
QPainterPathStroker and is placed at the bottom of a QGraphicsItemGroup
with a white brush. The other object holds the standard colored text
and is placed on top.

Notes:
- possibly quite expensive on older machines
- ProfileGraphicsView::plot_text() now returns a QGraphicsItemGroup
- QGraphicsSimpleTextItem uses a top-left baseline anchor
while QPainterPath::addText() uses a bottom-left baseline
which is a bit mysterious, requires the -3 offset for a match
and is possibly non-portable across fonts and sizes.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Better positioning of buttons on dive planner

Better positioning of buttons on the dive planner. The ok / cancel
buttons are in the correct place, and the '+' sign for time will not
overlap the time string anymore.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Make it possible to add a handler between others

Make it possible to add a handler between others,
someone asked why I didn't make like this from the
beginning, the answer is that I wanted to have something
stable before messing a bit more with the planner, but
since the planer is almost-stable, I added. :)

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Make it possible to drag a handle between handlers

Make it possible to drag a handle between handlers,
this way the configuration of the dive is more acurate
and easyer to make. I'v discovered a problem where it's
a bit hard to 'grab' the handler, investigating it now.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>