af112ab628 qt: Rename SetPrune() to InitializePruneSetting() (Hennadii Stepanov)
b0bfbe5028 refactor: Drop `bool force' parameter (Hennadii Stepanov)
68c9bbe9bc qt: Force set nPruneSize in QSettings after intro (Hennadii Stepanov)
a82bd8fa57 util: Replace magics with DEFAULT_PRUNE_TARGET_GB (Hennadii Stepanov)
Pull request description:
On master (5622d8f315), having `QSettings` set already
```
$ grep nPruneSize ~/.config/Bitcoin/Bitcoin-Qt-testnet.conf
nPruneSize=6
```
enabling prune option in the intro dialog
```
$ ./src/qt/bitcoin-qt -choosedatadir -testnet
```

has no effect:
```
$ grep Prune ~/.bitcoin/testnet3/debug.log
2019-12-08T10:04:41Z Prune configured to target 5722 MiB on disk for block and undo files.
```
---
With this PR:
```
$ grep Prune ~/.bitcoin/testnet3/debug.log
2019-12-08T10:20:35Z Prune configured to target 1907 MiB on disk for block and undo files.
```
This PR has been split of #17453 (the first two commits) as it fixes an orthogonal bug.
Refs:
- https://github.com/bitcoin/bitcoin/pull/17453#discussion_r345424240
- https://github.com/bitcoin/bitcoin/pull/17453#discussion_r350960201
ACKs for top commit:
Sjors:
Code review re-ACK af112ab628
ryanofsky:
Code review ACK af112ab628. Just suggested changes since last review (thanks!)
promag:
Tested ACK af112ab628. Latest suggestions and changes look good to me.
Tree-SHA512: 8ddad34b30dcc2cdcad6678ba8a0b36fa176e4e3465862ef6eee9be0f98d8146705138c9c7995dd8c0990af41078ca743fef1a90ed9240081f052f32ddec72b9
Contains Designer UI files. They are created with Qt Creator, but can be edited using any text editor.
locale
Contains translations. They are periodically updated. The process is described here.
res
Resources such as the icon.
test
Tests.
bitcoingui.(h/cpp)
Represents the main window of the Bitcoin UI.
*model.(h/cpp)
The model. When it has a corresponding controller, it generally inherits from QAbstractTableModel. Models that are used by controllers as helpers inherit from other Qt classes like QValidator.
ClientModel is used by the main application bitcoingui and several models like peertablemodel.
*page.(h/cpp)
A controller. :NAMEpage.cpp generally includes :NAMEmodel.h and forms/:NAME.page.ui with a similar :NAME.
*dialog.(h/cpp)
Various dialogs, e.g. to open a URL. Inherit from QDialog.
paymentserver.(h/cpp)
Used to process BIP21 payment URI requests. Also handles URI based application switching (e.g. when following a bitcoin:... link from a browser).
walletview.(h/cpp)
Represents the view to a single wallet.
Other .h/cpp files
UI elements like BitcoinAmountField, which inherit from QWidget.
bitcoinstrings.cpp: automatically generated
bitcoinunits.(h/cpp): BTC / mBTC / etc handling
callback.h
guiconstants.h: UI colors, app name, etc
guiutil.h: several helper functions
macdockiconhandler.(h/mm): macOS dock icon handler
macnotificationhandler.(h/mm): display notifications in macOS
Contribute
See CONTRIBUTING.md for general guidelines. Specifically for Qt:
don't change local/bitcoin_en.ts; this happens automatically
Using Qt Creator as IDE
You can use Qt Creator as an IDE. This is especially useful if you want to change
the UI layout.
Download and install the community edition of Qt Creator.
Uncheck everything except Qt Creator during the installation process.