diff options
Diffstat (limited to 'examples/quick/pointerhandlers/components/FakeFlickable.qml')
| -rw-r--r-- | examples/quick/pointerhandlers/components/FakeFlickable.qml | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/examples/quick/pointerhandlers/components/FakeFlickable.qml b/examples/quick/pointerhandlers/components/FakeFlickable.qml new file mode 100644 index 0000000000..2857d066aa --- /dev/null +++ b/examples/quick/pointerhandlers/components/FakeFlickable.qml @@ -0,0 +1,149 @@ +/**************************************************************************** +** +** Copyright (C) 2021 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, 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 The Qt Company Ltd 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 2.14 +import Qt.labs.animation 1.0 + +Item { + id: root + objectName: "viewport" + default property alias data: __contentItem.data + property alias velocity: anim.velocity + property alias contentX: __contentItem.x // sign is reversed compared to Flickable.contentX + property alias contentY: __contentItem.y // sign is reversed compared to Flickable.contentY + property alias contentWidth: __contentItem.width + property alias contentHeight: __contentItem.height + signal flickStarted + signal flickEnded + + Item { + id: __contentItem + objectName: "__contentItem" + width: childrenRect.width + height: childrenRect.height + + BoundaryRule on x { + id: xbr + minimum: root.width - __contentItem.width + maximum: 0 + minimumOvershoot: 100 + maximumOvershoot: 100 + overshootFilter: BoundaryRule.Peak + } + + BoundaryRule on y { + id: ybr + minimum: root.height - __contentItem.height + maximum: 0 + minimumOvershoot: 100 + maximumOvershoot: 100 + overshootFilter: BoundaryRule.Peak + } + + DragHandler { + id: dragHandler + onActiveChanged: + if (active) { + anim.stop() + root.flickStarted() + } else { + var vel = centroid.velocity + if (xbr.returnToBounds()) + vel.x = 0 + if (ybr.returnToBounds()) + vel.y = 0 + if (vel.x !== 0 || vel.y !== 0) + anim.restart(vel) + else + root.flickEnded() + } + } + WheelHandler { + rotationScale: 15 + property: "x" + orientation: Qt.Horizontal + acceptedDevices: PointerDevice.Mouse | PointerDevice.TouchPad + onActiveChanged: + // emitting signals in both instances is redundant but hard to avoid + // when the touchpad is flicking along both axes + if (active) { + anim.stop() + root.flickStarted() + } else { + xbr.returnToBounds() + root.flickEnded() + } + } + WheelHandler { + rotationScale: 15 + property: "y" + orientation: Qt.Vertical + acceptedDevices: PointerDevice.Mouse | PointerDevice.TouchPad + onActiveChanged: + if (active) { + anim.stop() + root.flickStarted() + } else { + ybr.returnToBounds() + root.flickEnded() + } + } + MomentumAnimation { + id: anim + target: __contentItem + onStarted: root.flickStarted() + onStopped: { + xbr.returnToBounds() + ybr.returnToBounds() + root.flickEnded() + } + } + } +} |