diff options
Diffstat (limited to 'examples/quick/pointerhandlers/components/Slider.qml')
-rw-r--r-- | examples/quick/pointerhandlers/components/Slider.qml | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/examples/quick/pointerhandlers/components/Slider.qml b/examples/quick/pointerhandlers/components/Slider.qml new file mode 100644 index 0000000000..0365d01149 --- /dev/null +++ b/examples/quick/pointerhandlers/components/Slider.qml @@ -0,0 +1,159 @@ +/**************************************************************************** +** +** 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 +import Qt.labs.animation + +Item { + id: root + property int value: 50 + property int maximumValue: 99 + property alias label: label.text + property alias tapEnabled: tap.enabled + property alias pressed: tap.pressed + signal tapped + + DragHandler { + id: dragHandler + objectName: label.text + " DragHandler" + target: knob + xAxis.enabled: false + } + + WheelHandler { + id: wheelHandler + objectName: label.text + " WheelHandler" + acceptedDevices: PointerDevice.Mouse | PointerDevice.TouchPad + invertible: false // Don't let the system "natural scrolling" setting affect this + rotationScale: -0.5 // But make it go consistently in the same direction as the fingers or wheel, a bit slow + target: knob + property: "y" + } + + Rectangle { + id: slot + anchors.top: parent.top + anchors.bottom: parent.bottom + anchors.margins: 10 + anchors.topMargin: label.height + 6 + anchors.bottomMargin: valueLabel.height + 4 + anchors.horizontalCenter: parent.horizontalCenter + width: 10 + color: "black" + radius: width / 2 + smooth: true + } + + Rectangle { + // RectangularGlow is better, but that's a different module + id: glow + anchors.fill: knob + anchors.margins: -5 + anchors.leftMargin: -2 + anchors.horizontalCenterOffset: 1 + radius: 5 + color: "#4400FFFF" + opacity: tap.pressed || tapFlash.running ? 1 : 0 + FlashAnimation on visible { + id: tapFlash + } + } + Image { + id: knob + source: "images/mixer-knob.png" + antialiasing: true + x: slot.x - width / 2 + slot.width / 2 + height: root.width / 2 + width: implicitWidth / implicitHeight * height + property bool programmatic: false + property real multiplier: root.maximumValue / (ybr.maximum - ybr.minimum) + onYChanged: if (!programmatic) root.value = root.maximumValue - (knob.y - ybr.minimum) * multiplier + transformOrigin: Item.Center + function setValue(value) { knob.y = ybr.maximum - value / knob.multiplier } + TapHandler { + id: tap + objectName: label.text + " TapHandler" + gesturePolicy: TapHandler.DragThreshold + onTapped: { + tapFlash.start() + root.tapped + } + } + BoundaryRule on y { + id: ybr + minimum: slot.y + maximum: slot.height + slot.y - knob.height + } + } + + Text { + id: valueLabel + font.pointSize: 16 + color: "red" + anchors.bottom: parent.bottom + anchors.horizontalCenter: parent.horizontalCenter + text: root.value + } + + Text { + id: label + font.pointSize: 12 + color: "red" + anchors.top: parent.top + anchors.topMargin: 5 + anchors.horizontalCenter: parent.horizontalCenter + } + + onHeightChanged: { + knob.programmatic = true + knob.setValue(root.value) + knob.programmatic = false + } +} |