This is a long overdue cleanup around the ideas of entering
numbers in Flowee Pay.
The core dataclass BitcoinValue now keeps track where the number
came from, either user input or some calculation. This allows
us to have the Fiat and the Coin price stay in sync without weird
problems.
The one we type uses a string, the price field that we are not typing in
is then a slave and we follow the auto-generated number as the
source.
This solves a host of known issues:
* Editing of value objects is much more consistnnt and predictable now.
* Switching to a different fiat type now properly re-calculates the
values that are slaved. So if the primary is a BCH value then the fiat
value gets the new exhange rate instantly applied.
* Switching to a different fiat type properly applies having a separator
So if you go from euro to Japanese yen, we now remove the separator
and the numbers behind it.
* Changing the app setting from BCH to mBCH now properly updates all
amounts. Notice that the user-typed string wins, if you typed 2 and
then change to mBCH we assume you wanted 2, not 2000.
* Paste now works more logcally.
* Cursor is no longer sometimes invisible, requiring backspace to make
it show up.
And last we now protect against too large numbers. It is seen as an
error to type a number above 21 million BCH.
Fixes#19
This sets up a basic system for creating modules on top of the flowee
pay static lib in a way that is ensured to be isolated (modules can't
accidentally use each other's classes)
The setup is made such that the buildsystem does the hard work on
plugging in a new module, making it so that all you need to do is create
a new dir and a "{something}ModuleInfo.h" file and it will get compiled
in.
The point there is to make it not have any merge conflicts and just make
it dead easy to get started.
Slowly the amount of cpp sources has been growing to the point
where its just too much to store in the root of the project.
I think they are more happy in a subdir as well, getting an elevated
position for themselves.
This new allows a value to be set as a number, for instance from the
user reading a QR code, and the "typed-value" is created from this
in order to allow the user to edit it instead of overwrite it.
To avoid recompiles and such generally to simplify stuff, this
moves all the code into a static lib that is then linked with
by the various apps (including tests).
tomFlowee