diff options
Diffstat (limited to 'src/plugins/platforms/android/androidjniaccessibility.cpp')
| -rw-r--r-- | src/plugins/platforms/android/androidjniaccessibility.cpp | 85 |
1 files changed, 59 insertions, 26 deletions
diff --git a/src/plugins/platforms/android/androidjniaccessibility.cpp b/src/plugins/platforms/android/androidjniaccessibility.cpp index 0523211196..da5b63ef21 100644 --- a/src/plugins/platforms/android/androidjniaccessibility.cpp +++ b/src/plugins/platforms/android/androidjniaccessibility.cpp @@ -1,6 +1,7 @@ // Copyright (C) 2021 The Qt Company Ltd. // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only +#include "androiddeadlockprotector.h" #include "androidjniaccessibility.h" #include "androidjnimain.h" #include "qandroidplatformintegration.h" @@ -14,11 +15,12 @@ #include <QtCore/private/qjnihelpers_p.h> #include <QtCore/QJniObject> #include <QtGui/private/qhighdpiscaling_p.h> + #include <QtCore/QObject> +#include <QtCore/qpointer.h> #include <QtCore/qvarlengtharray.h> static const char m_qtTag[] = "Qt A11Y"; -static const char m_classErrorMsg[] = "Can't find class \"%s\""; QT_BEGIN_NAMESPACE @@ -47,7 +49,7 @@ namespace QtAndroidAccessibility // Because of that almost every method here is split into two parts. // The _helper part is executed in the context of m_accessibilityContext // on the main thread. The other part is executed in Java thread. - static QPointer<QObject> m_accessibilityContext = nullptr; + Q_CONSTINIT static QPointer<QObject> m_accessibilityContext = {}; // This method is called from the Qt main thread, and normally a // QGuiApplication instance will be used as a parent. @@ -61,13 +63,26 @@ namespace QtAndroidAccessibility template <typename Func, typename Ret> void runInObjectContext(QObject *context, Func &&func, Ret *retVal) { - QMetaObject::invokeMethod(context, func, Qt::BlockingQueuedConnection, retVal); + AndroidDeadlockProtector protector; + if (!protector.acquire()) { + __android_log_print(ANDROID_LOG_WARN, m_qtTag, + "Could not run accessibility call in object context, accessing " + "main thread could lead to deadlock"); + return; + } + + if (!QtAndroid::blockEventLoopsWhenSuspended() + || QGuiApplication::applicationState() != Qt::ApplicationSuspended) { + QMetaObject::invokeMethod(context, func, Qt::BlockingQueuedConnection, retVal); + } else { + __android_log_print(ANDROID_LOG_WARN, m_qtTag, + "Could not run accessibility call in object context, event loop suspended."); + } } void initialize() { - QJniObject::callStaticMethod<void>(QtAndroid::applicationClass(), - "initializeAccessibility"); + QtAndroid::qtActivityDelegate().callMethod<void>("initializeAccessibility"); } bool isActive() @@ -112,6 +127,12 @@ namespace QtAndroidAccessibility QtAndroid::notifyObjectHide(accessibilityObjectId, parentObjectId); } + void notifyObjectShow(uint accessibilityObjectId) + { + const auto parentObjectId = parentId_helper(accessibilityObjectId); + QtAndroid::notifyObjectShow(parentObjectId); + } + void notifyObjectFocus(uint accessibilityObjectId) { QtAndroid::notifyObjectFocus(accessibilityObjectId); @@ -125,6 +146,11 @@ namespace QtAndroidAccessibility QtAndroid::notifyValueChanged(accessibilityObjectId, value); } + void notifyScrolledEvent(uint accessiblityObjectId) + { + QtAndroid::notifyScrolledEvent(accessiblityObjectId); + } + static QVarLengthArray<int, 8> childIdListForAccessibleObject_helper(int objectId) { QAccessibleInterface *iface = interfaceFromId(objectId); @@ -182,7 +208,7 @@ namespace QtAndroidAccessibility return result; } - static QRect screenRect_helper(int objectId) + static QRect screenRect_helper(int objectId, bool clip = true) { QRect rect; QAccessibleInterface *iface = interfaceFromId(objectId); @@ -190,7 +216,7 @@ namespace QtAndroidAccessibility rect = QHighDpi::toNativePixels(iface->rect(), iface->window()); } // If the widget is not fully in-bound in its parent then we have to clip the rectangle to draw - if (iface && iface->parent() && iface->parent()->isValid()) { + if (clip && iface && iface->parent() && iface->parent()->isValid()) { const auto parentRect = QHighDpi::toNativePixels(iface->parent()->rect(), iface->parent()->window()); rect = rect.intersected(parentRect); } @@ -292,34 +318,44 @@ namespace QtAndroidAccessibility static jboolean scrollForward(JNIEnv */*env*/, jobject /*thiz*/, jint objectId) { bool result = false; + + const auto& ids = childIdListForAccessibleObject_helper(objectId); + if (ids.isEmpty()) + return false; + + const int firstChildId = ids.first(); + const QRect oldPosition = screenRect_helper(firstChildId, false); + if (m_accessibilityContext) { runInObjectContext(m_accessibilityContext, [objectId]() { return scroll_helper(objectId, QAccessibleActionInterface::increaseAction()); }, &result); } - return result; + + // Don't check for position change if the call was not successful + return result && oldPosition != screenRect_helper(firstChildId, false); } static jboolean scrollBackward(JNIEnv */*env*/, jobject /*thiz*/, jint objectId) { bool result = false; + + const auto& ids = childIdListForAccessibleObject_helper(objectId); + if (ids.isEmpty()) + return false; + + const int firstChildId = ids.first(); + const QRect oldPosition = screenRect_helper(firstChildId, false); + if (m_accessibilityContext) { runInObjectContext(m_accessibilityContext, [objectId]() { return scroll_helper(objectId, QAccessibleActionInterface::decreaseAction()); }, &result); } - return result; - } - -#define FIND_AND_CHECK_CLASS(CLASS_NAME) \ -clazz = env->FindClass(CLASS_NAME); \ -if (!clazz) { \ - __android_log_print(ANDROID_LOG_FATAL, m_qtTag, m_classErrorMsg, CLASS_NAME); \ - return JNI_FALSE; \ -} - - //__android_log_print(ANDROID_LOG_FATAL, m_qtTag, m_methodErrorMsg, METHOD_NAME, METHOD_SIGNATURE); + // Don't check for position change if the call was not successful + return result && oldPosition != screenRect_helper(firstChildId, false); + } static QString textFromValue(QAccessibleInterface *iface) { @@ -517,7 +553,7 @@ if (!clazz) { \ return true; } - static JNINativeMethod methods[] = { + static const JNINativeMethod methods[] = { {"setActive","(Z)V",(void*)setActive}, {"childIdListForAccessibleObject", "(I)[I", (jintArray)childIdListForAccessibleObject}, {"parentId", "(I)I", (void*)parentId}, @@ -537,13 +573,10 @@ if (!clazz) { \ return false; \ } - bool registerNatives(JNIEnv *env) + bool registerNatives(QJniEnvironment &env) { - jclass clazz; - FIND_AND_CHECK_CLASS("org/qtproject/qt/android/accessibility/QtNativeAccessibility"); - jclass appClass = static_cast<jclass>(env->NewGlobalRef(clazz)); - - if (env->RegisterNatives(appClass, methods, sizeof(methods) / sizeof(methods[0])) < 0) { + if (!env.registerNativeMethods("org/qtproject/qt/android/QtNativeAccessibility", + methods, sizeof(methods) / sizeof(methods[0]))) { __android_log_print(ANDROID_LOG_FATAL,"Qt A11y", "RegisterNatives failed"); return false; } |