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Diffstat (limited to 'src/settingsui/AutoScroller.qml')
-rw-r--r-- | src/settingsui/AutoScroller.qml | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/src/settingsui/AutoScroller.qml b/src/settingsui/AutoScroller.qml new file mode 100644 index 0000000..14c7717 --- /dev/null +++ b/src/settingsui/AutoScroller.qml @@ -0,0 +1,113 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the Qt Device Utilities module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL3$ +** 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 The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/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 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPLv3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or later 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 2.0 requirements will be +** met: http://www.gnu.org/licenses/gpl-2.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +import QtQuick 2.6 +import QtQuick.Enterprise.VirtualKeyboard 2.0 + +Item { + + property var innerFlickable + property var outerFlickable + property var inputItem: InputContext.inputItem + + onInputItemChanged: { + innerFlickable = null + outerFlickable = null + if (inputItem !== null) { + var parent_ = inputItem.parent + while (parent_) { + if (parent_.maximumFlickVelocity) { + if (innerFlickable) { + outerFlickable = parent_ + break + } else { + innerFlickable = parent_ + } + } + parent_ = parent_.parent + } + delayedLoading.triggered() + } + } + + function ensureVisible(flickable) { + if (Qt.inputMethod.visible && inputItem && flickable && flickable.visible && flickable.interactive) { + + var verticallyFlickable = (flickable.flickableDirection === Flickable.HorizontalAndVerticalFlick || flickable.flickableDirection === Flickable.VerticalFlick + || (flickable.flickableDirection === Flickable.AutoFlickDirection && flickable.contentHeight > flickable.height)) + var horizontallyFlickable = (flickable.flickableDirection === Flickable.HorizontalAndVerticalFlick || flickable.flickableDirection === Flickable.HorizontalFlick + || (flickable.flickableDirection === Flickable.AutoFlickDirection && flickable.contentWidth > flickable.width)) + + if ((!verticallyFlickable && !horizontallyFlickable) || !inputItem.hasOwnProperty("cursorRectangle")) + return + + var cursorRectangle = flickable.contentItem.mapFromItem(inputItem, inputItem.cursorRectangle.x, inputItem.cursorRectangle.y) + + var oldContentY = flickable.contentY + if (verticallyFlickable) { + var scrollMarginVertical = (flickable && flickable.scrollMarginVertical) ? flickable.scrollMarginVertical : 10 + if (flickable.contentY >= cursorRectangle.y - scrollMarginVertical) + flickable.contentY = Math.max(0, cursorRectangle.y - scrollMarginVertical) + else if (flickable.contentY + flickable.height <= cursorRectangle.y + inputItem.cursorRectangle.height + scrollMarginVertical) + flickable.contentY = Math.min(flickable.contentHeight - flickable.height, cursorRectangle.y + inputItem.cursorRectangle.height - flickable.height + scrollMarginVertical) + } + if (horizontallyFlickable) { + var scrollMarginHorizontal = (flickable && flickable.scrollMarginHorizontal) ? flickable.scrollMarginHorizontal : 10 + if (flickable.contentX >= cursorRectangle.x - scrollMarginHorizontal) + flickable.contentX = Math.max(0, cursorRectangle.x - scrollMarginHorizontal) + else if (flickable.contentX + flickable.width <= cursorRectangle.x + inputItem.cursorRectangle.width + scrollMarginHorizontal) + flickable.contentX = Math.min(flickable.contentWidth - flickable.width, cursorRectangle.x + inputItem.cursorRectangle.width - flickable.width + scrollMarginHorizontal) + } + } + } + Timer { + id: delayedLoading + interval: 10 + onTriggered: { + ensureVisible(innerFlickable) + ensureVisible(outerFlickable) + } + } + Connections { + ignoreUnknownSignals: true + target: inputItem && !Qt.inputMethod.animating ? Qt.inputMethod : null + onKeyboardRectangleChanged: delayedLoading.triggered() + } + Connections { + ignoreUnknownSignals: true + target: inputItem && inputItem.activeFocus ? inputItem : null + onCursorRectangleChanged: delayedLoading.triggered() + } +} |