Files
bitcoin/src/qt
Wladimir J. van der Laan 94167e2b5b Merge #15208: Qt: remove macOS launch-at-startup when compiled with > macOS 10.11, fix memory missmanagement
da6011826a Fix macOS launch-at-startup memory issue (Jonas Schnelli)
516437a1b7 Qt: remove macOS launch-at-startup option when compiled with > macOS 10.11 (Jonas Schnelli)

Pull request description:

  The launch-at-startup API Bitcoin Core uses on macOS where removed in macOS 10.11 leading to a segmentation-fault due to the weak-linking when not actively compiled against SDK 10.11 (`-mmacosx-version-min=10.11`)

  This PR removes the launch-at-startup feature on macOS when compiled with macOS min version > 10.11 (the default is always the macOS version you compile on).

  **The depends built binaries (Gitian) are not affected since we are building with min macOS 10.10.**

  Users self compiling on macOS > 10.11 can re-enable the feature by compiling with min version <= 10.11 (`CXXFLAGS="-mmacosx-version-min=10.11" CFLAGS="-mmacosx-version-min=10.11" ./configure`)

  **Isn't there a new API from Apple?**
  Yes, [there is](https://developer.apple.com/library/archive/documentation/MacOSX/Conceptual/BPSystemStartup/Chapters/CreatingLoginItems.html).
  It will require to create a helper application which needs to be embedded in the .app folder (needs code signing as well). Developers willing to go down that rabbit hole are welcome.

  Fixes #15142

Tree-SHA512: fa9cc4e39d5a2d2559919b7e22b7766f5e0269a361719294d4a4a2df2fd9d955e5b23b5907e68023fdeee297f652f844f3c447904bf18f9c1145348ad101c432
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This directory contains the BitcoinQT graphical user interface (GUI). It uses the cross-platform framework Qt.

The current precise version for Qt 5 is specified in qt.mk.

Compile and run

See build instructions (macOS, Windows, Unix, etc).

To run:

./src/qt/bitcoin-qt

Files and directories

forms

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 and BIP70 (see https://github.com/bitcoin/bitcoin/pull/11622) 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:

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.

Instructions for macOS:

  1. Make sure you installed everything through Homebrew mentioned in the macOS build instructions
  2. Use ./configure with the --enable-debug flag
  3. In Qt Creator do "New Project" -> Import Project -> Import Existing Project
  4. Enter "bitcoin-qt" as project name, enter src/qt as location
  5. Leave the file selection as it is
  6. Confirm the "summary page"
  7. In the "Projects" tab select "Manage Kits..."
  8. Select the default "Desktop" kit and select "Clang (x86 64bit in /usr/bin)" as compiler
  9. Select LLDB as debugger (you might need to set the path to your installation)
  10. Start debugging with Qt Creator (you might need to the executable to "bitcoin-qt" under "Run", which is where you can also add command line arguments)