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Diffstat (limited to 'src/qtdesktop/private/ModalPopupBehavior.qml')
-rw-r--r-- | src/qtdesktop/private/ModalPopupBehavior.qml | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/src/qtdesktop/private/ModalPopupBehavior.qml b/src/qtdesktop/private/ModalPopupBehavior.qml new file mode 100644 index 00000000..1e95f6f1 --- /dev/null +++ b/src/qtdesktop/private/ModalPopupBehavior.qml @@ -0,0 +1,130 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Components project. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names +** of its contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +import QtQuick 2.0 + +// KNOWN ISSUES +// none + +Item { + id: popupBehavior + + property bool showing: false + property bool whenAlso: true // modifier to the "showing" property + property bool consumeCancelClick: true + property int delay: 0 // delay before popout becomes visible + property int deallocationDelay: 3000 // 3 seconds + + property Component popupComponent + + property alias popup: popupLoader.item // read-only + property alias window: popupBehavior.root // read-only + + signal prepareToShow + signal prepareToHide + signal cancelledByClick + + // implementation + + anchors.fill: parent + + onShowingChanged: notifyChange() + onWhenAlsoChanged: notifyChange() + function notifyChange() { + if(showing && whenAlso) { + if(popupLoader.sourceComponent == undefined) { + popupLoader.sourceComponent = popupComponent; + } + } else { + mouseArea.enabled = false; // disable before opacity is changed in case it has fading behavior + if(Qt.isQtObject(popupLoader.item)) { + popupBehavior.prepareToHide(); + popupLoader.item.opacity = 0; + } + } + } + + property Item root: findRoot() + function findRoot() { + var p = parent; + while(p.parent != undefined) + p = p.parent; + + return p; + } + + MouseArea { + id: mouseArea + anchors.fill: parent + enabled: false // enabled only when popout is showing + onPressed: { + popupBehavior.showing = false; + mouse.accepted = consumeCancelClick; + cancelledByClick(); + } + } + + Loader { + id: popupLoader + } + + Timer { // visibility timer + running: Qt.isQtObject(popupLoader.item) && showing && whenAlso + interval: delay + onTriggered: { + popupBehavior.prepareToShow(); + mouseArea.enabled = true; + popup.opacity = 1; + } + } + + Timer { // deallocation timer + running: Qt.isQtObject(popupLoader.item) && popupLoader.item.opacity == 0 + interval: deallocationDelay + onTriggered: popupLoader.sourceComponent = undefined + } + + states: State { + name: "active" + when: Qt.isQtObject(popupLoader.item) && popupLoader.item.opacity > 0 + ParentChange { target: popupBehavior; parent: root } + } + } + |