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Diffstat (limited to 'doc/src/platforms/android/android-envoirnment-variables.qdoc')
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diff --git a/doc/src/platforms/android/android-envoirnment-variables.qdoc b/doc/src/platforms/android/android-envoirnment-variables.qdoc new file mode 100644 index 00000000..6f285be6 --- /dev/null +++ b/doc/src/platforms/android/android-envoirnment-variables.qdoc @@ -0,0 +1,44 @@ +// Copyright (C) 2020 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only + +/*! +\page android-environment-variables.html +\title Environment Variables Used by Qt for Android +\brief Lists some useful environment variables used by the Qt For Android toolchain. +\ingroup androidplatform + +\section1 Enabling or disabling workarounds + +Qt Android uses some environment variables to enable/disable certain workarounds: +\section2 Commonly used variables +\list + \li QT_ANDROID_NO_EXIT_CALL: In some cases, an Android app might not be able + to safely clean all threads while calling \c exit() and crash. This is because + there are C++ threads running and destroying these without joining them + terminates an application. These threads cannot be joined because it's not + possible to know if they are running. + This flag avoids calling \c exit() and lets the Android system handle this, + at the cost of not attempting to run global destructors. + \li QT_ANDROID_ENABLE_WORKAROUND_TO_DISABLE_PREDICTIVE_TEXT: Allows + the hiding of predictive text suggestions, mainly from password fields. Certain + devices don’t handle this properly. + \li QT_ANDROID_ENABLE_RIGHT_MOUSE_FROM_LONG_PRESS: Interprets a long touch press + as a right mouse click event. + \li QT_ANDROID_DISABLE_ACCESSIBILITY: Disable \l{Assistive Tools}{Accessibility}. + This prevents the processing of accessibility events. +\endlist + +\section2 Less commonly used variables +\list + \li QT_ANDROID_FONT_LOCATION: Sets a custom path for system fonts. + \li QT_ANDROID_MAX_ASSETS_CACHE_SIZE: cache size for assets under the + assets folder. + \li QT_ANDROID_DISABLE_GLYPH_CACHE_WORKAROUND + \li QT_ANDROID_RASTER_IMAGE_DEPTH + \li QT_ANDROID_MINIMUM_MOUSE_DOUBLE_CLICK_DISTANCE +\endlist + +\note Though related, these are not the same as CMake commands or variables used +by Qt For Android, see \l{Qt for Android: CMake} + +*/ |