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Diffstat (limited to 'src/plugins/platforms/android/src/androidjniaccessibility.cpp')
| -rw-r--r-- | src/plugins/platforms/android/src/androidjniaccessibility.cpp | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/src/plugins/platforms/android/src/androidjniaccessibility.cpp b/src/plugins/platforms/android/src/androidjniaccessibility.cpp new file mode 100644 index 0000000000..07f3371e72 --- /dev/null +++ b/src/plugins/platforms/android/src/androidjniaccessibility.cpp @@ -0,0 +1,260 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "androidjniaccessibility.h" +#include "androidjnimain.h" +#include "qandroidplatformintegration.h" +#include "qpa/qplatformaccessibility.h" +#include "qguiapplication.h" +#include "qwindow.h" +#include "qrect.h" +#include "private/qaccessible2_p.h" + +#include "qdebug.h" + +static const char m_qtTag[] = "QtA11y"; +static const char m_classErrorMsg[] = "Can't find class \"%s\""; +static const char m_methodErrorMsg[] = "Can't find method \"%s%s\""; + +namespace QtAndroidAccessibility +{ + static void setActive(JNIEnv */*env*/, jobject /*thiz*/, jboolean active) + { + QAndroidPlatformIntegration *platformIntegration = QtAndroid::androidPlatformIntegration(); + if (platformIntegration) + platformIntegration->accessibility()->setActive(active); + else + __android_log_print(ANDROID_LOG_WARN, m_qtTag, "Could not activate platform accessibility."); + } + + QAccessibleInterface *interfaceFromId(jint objectId) + { + QAccessibleInterface *iface = 0; + if (objectId == -1) { + QWindow *win = qApp->focusWindow(); + if (win) + iface = win->accessibleRoot(); + } else { + iface = QAccessible::accessibleInterface(objectId); + } + return iface; + } + + static jintArray childIdListForAccessibleObject(JNIEnv *env, jobject /*thiz*/, jint objectId) + { + QAccessibleInterface *iface = interfaceFromId(objectId); + if (iface) { + jintArray jArray = env->NewIntArray(jsize(iface->childCount())); + for (int i = 0; i < iface->childCount(); ++i) { + QAccessibleInterface *child = iface->child(i); + if (child) { + QAccessible::Id ifaceId = QAccessible::uniqueId(child); + jint jid = ifaceId; + env->SetIntArrayRegion(jArray, i, 1, &jid); + } + } + return jArray; + } + + return env->NewIntArray(jsize(0)); + } + + static jint parentId(JNIEnv */*env*/, jobject /*thiz*/, jint objectId) + { + QAccessibleInterface *iface = interfaceFromId(objectId); + if (iface) { + QAccessibleInterface *parent = iface->parent(); + if (parent) { + if (parent->role() == QAccessible::Application) + return -1; + return QAccessible::uniqueId(parent); + } + } + return -1; + } + + static jobject screenRect(JNIEnv *env, jobject /*thiz*/, jint objectId) + { + QRect rect; + QAccessibleInterface *iface = interfaceFromId(objectId); + if (iface && iface->isValid()) { + rect = iface->rect(); + } + + jclass rectClass = env->FindClass("android/graphics/Rect"); + jmethodID ctor = env->GetMethodID(rectClass, "<init>", "(IIII)V"); + jobject jrect = env->NewObject(rectClass, ctor, rect.left(), rect.top(), rect.right(), rect.bottom()); + return jrect; + } + + static jint hitTest(JNIEnv */*env*/, jobject /*thiz*/, jfloat x, jfloat y) + { + QAccessibleInterface *root = interfaceFromId(-1); + if (root) { + QAccessibleInterface *child = root->childAt((int)x, (int)y); + QAccessibleInterface *lastChild = 0; + while (child && (child != lastChild)) { + lastChild = child; + child = child->childAt((int)x, (int)y); + } + if (lastChild) + return QAccessible::uniqueId(lastChild); + } + return -1; + } + + static jboolean clickAction(JNIEnv */*env*/, jobject /*thiz*/, jint objectId) + { +// qDebug() << "A11Y: CLICK: " << objectId; + QAccessibleInterface *iface = interfaceFromId(objectId); + if (iface && iface->actionInterface()) { + if (iface->actionInterface()->actionNames().contains(QAccessibleActionInterface::pressAction())) + iface->actionInterface()->doAction(QAccessibleActionInterface::pressAction()); + else + iface->actionInterface()->doAction(QAccessibleActionInterface::toggleAction()); + } + return false; + } + + +#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); + +#define CALL_METHOD(OBJECT, METHOD_NAME, METHOD_SIGNATURE, VALUE) \ +{ \ + jclass clazz = env->GetObjectClass(OBJECT); \ + jmethodID method = env->GetMethodID(clazz, METHOD_NAME, METHOD_SIGNATURE); \ + if (!method) { \ + __android_log_print(ANDROID_LOG_WARN, m_qtTag, m_methodErrorMsg, METHOD_NAME, METHOD_SIGNATURE); \ + return; \ + } \ + env->CallVoidMethod(OBJECT, method, VALUE); \ +} + + + static jstring descriptionForAccessibleObject(JNIEnv *env, jobject /*thiz*/, jint objectId) + { + QString desc; + QAccessibleInterface *iface = interfaceFromId(objectId); + if (iface && iface->isValid()) { + desc = iface->text(QAccessible::Name); + if (desc.isEmpty()) + desc = iface->text(QAccessible::Description); + + desc += QChar(' ') + QString::fromUtf8(qAccessibleRoleString(iface->role())); + } + + jstring jdesc = env->NewString((jchar*) desc.constData(), (jsize) desc.size()); + return jdesc; + } + + static void populateNode(JNIEnv *env, jobject /*thiz*/, jint objectId, jobject node) + { + QAccessibleInterface *iface = interfaceFromId(objectId); + if (!iface || !iface->isValid()) { + __android_log_print(ANDROID_LOG_WARN, m_qtTag, "Accessibility: populateNode for Invalid ID"); + return; + } + QAccessible::State state = iface->state(); + + QString desc = iface->text(QAccessible::Name); + if (desc.isEmpty()) + desc = iface->text(QAccessible::Description); + if ((iface->role() != QAccessible::NoRole) && + (iface->role() != QAccessible::Client) && + (iface->role() != QAccessible::Pane)) { + desc += QChar(' ') + QString::fromUtf8(qAccessibleRoleString(iface->role())); + } + + CALL_METHOD(node, "setEnabled", "(Z)V", !state.disabled) + //CALL_METHOD(node, "setFocusable", "(Z)V", state.focusable) + CALL_METHOD(node, "setFocusable", "(Z)V", true) + //CALL_METHOD(node, "setFocused", "(Z)V", state.focused) + CALL_METHOD(node, "setCheckable", "(Z)V", state.checkable) + CALL_METHOD(node, "setChecked", "(Z)V", state.checked) + CALL_METHOD(node, "setVisibleToUser", "(Z)V", !state.invisible) + + if (iface->actionInterface()) { + QStringList actions = iface->actionInterface()->actionNames(); + bool clickable = actions.contains(QAccessibleActionInterface::pressAction()); + bool toggle = actions.contains(QAccessibleActionInterface::toggleAction()); + if (clickable || toggle) { + CALL_METHOD(node, "setClickable", "(Z)V", clickable) + CALL_METHOD(node, "addAction", "(I)V", 16) // ACTION_CLICK defined in AccessibilityNodeInfo + } + } + + jstring jdesc = env->NewString((jchar*) desc.constData(), (jsize) desc.size()); + //CALL_METHOD(node, "setText", "(Ljava/lang/CharSequence;)V", jdesc) + CALL_METHOD(node, "setContentDescription", "(Ljava/lang/CharSequence;)V", jdesc) + } + + static JNINativeMethod methods[] = { + {"setActive","(Z)V",(void*)setActive}, + {"childIdListForAccessibleObject", "(I)[I", (jintArray)childIdListForAccessibleObject}, + {"parentId", "(I)I", (void*)parentId}, + {"descriptionForAccessibleObject", "(I)Ljava/lang/String;", (jstring)descriptionForAccessibleObject}, + {"screenRect", "(I)Landroid/graphics/Rect;", (jobject)screenRect}, + {"hitTest", "(FF)I", (void*)hitTest}, + {"populateNode", "(ILandroid/view/accessibility/AccessibilityNodeInfo;)V", (void*)populateNode}, + {"clickAction", "(I)Z", (void*)clickAction}, + }; + + bool registerNatives(JNIEnv *env) + { + jclass clazz; + FIND_AND_CHECK_CLASS("org/qtproject/qt5/android/accessibility/QtNativeAccessibility"); + jclass appClass = static_cast<jclass>(env->NewGlobalRef(clazz)); + + if (env->RegisterNatives(appClass, methods, sizeof(methods) / sizeof(methods[0])) < 0) { + __android_log_print(ANDROID_LOG_FATAL,"Qt", "RegisterNatives failed"); + return false; + } + + return true; + } +} |