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/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the Qt Quick Extras module 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 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. ** ** 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.LGPL3 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-3.0.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 (at your option) the GNU General ** Public license version 3 or any later version approved by the KDE Free ** Qt Foundation. The licenses are as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 ** included in the packaging of this file. Please review the following ** information to ensure the GNU General Public License requirements will ** be met: https://www.gnu.org/licenses/gpl-2.0.html and ** https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ import QtQuick 2.2 import QtQuick.Controls 1.4 import QtQuick.Controls.Styles 1.4 import QtQuick.Controls.Private 1.0 import QtQuick.Extras 1.4 import QtQuick.Extras.Private 1.0 import QtQuick.Extras.Private.CppUtils 1.0 /*! \qmltype DialStyle \inqmlmodule QtQuick.Controls.Styles \since 5.5 \ingroup controlsstyling \brief Provides custom styling for Dial. You can create a custom dial by replacing the following delegates: \list \li \l background \endlist */ Style { id: dialStyle /*! The \l Dial that this style is attached to. */ readonly property Dial control: __control /*! The distance from the center of the dial to the outer edge of the dial. This property is useful for determining the size of the various components of the style, in order to ensure that they are scaled proportionately when the dial is resized. */ readonly property real outerRadius: Math.min(control.height, control.width) / 2 /*! The distance in pixels from the outside of the dial (outerRadius) to the center of the handle. */ property real handleInset: (__tickmarkRadius * 4) + ((__handleRadius * 2) * 0.55) /*! The interval at which tickmarks are displayed. For example, if this property is set to \c 10, control.minimumValue to \c 0, and control.maximumValue to \c 100, the tickmarks displayed will be 0, 10, 20, etc., to 100, along the circumference of the dial. */ property real tickmarkStepSize: 1 /*! The distance in pixels from the outside of the dial (outerRadius) at which the outermost point of the tickmark line is drawn. */ property real tickmarkInset: 0 /*! The amount of tickmarks displayed by the dial, calculated from \l tickmarkStepSize and the control's \l {Dial::minimumValue}{minimumValue} and \l {Dial::maximumValue}{maximumValue}. \sa minorTickmarkCount */ readonly property int tickmarkCount: control.__panel.circularTickmarkLabel.tickmarkCount /*! The amount of minor tickmarks between each tickmark. \sa tickmarkCount */ property int minorTickmarkCount: 0 /*! The distance in pixels from the outside of the dial (outerRadius) at which the outermost point of the minor tickmark line is drawn. */ property real minorTickmarkInset: 0 /*! The distance in pixels from the outside of the dial (outerRadius) at which the center of the value marker text is drawn. */ property real labelInset: 0 /*! The interval at which tickmark labels are displayed. For example, if this property is set to \c 10 (the default), control.minimumValue to \c 0, and control.maximumValue to \c 100, the tickmark labels displayed will be 0, 10, 20, etc., to 100, along the circumference of the dial. */ property real labelStepSize: tickmarkStepSize /*! The amount of tickmark labels displayed by the dial, calculated from \l labelStepSize and the control's \l {Dial::minimumValue}{minimumValue} and \l {Dial::maximumValue}{maximumValue}. \sa tickmarkCount, minorTickmarkCount */ readonly property int labelCount: control.__panel.circularTickmarkLabel.labelCount /*! \qmlmethod real DialStyle::valueToAngle(real value) Returns \a value as an angle in degrees. This function is useful for custom drawing or positioning of items in the style's components. For example, it can be used to calculate the angles at which to draw an arc around the dial indicating the safe range of values. */ function valueToAngle(value) { return control.__panel.circularTickmarkLabel.valueToAngle(value); } /*! \internal */ readonly property real __tickmarkRadius: outerRadius * 0.06 /*! \internal */ readonly property real __handleRadius: outerRadius * 0.15 /*! \internal This property determines whether it is possible to change the value of the dial simply by pressing/tapping. If \c false, the user must drag to rotate the dial and hence change the value. This property is useful for touch devices, where it is easy to accidentally tap while flicking, for example. */ property bool __dragToSet: Settings.hasTouchScreen && Settings.isMobile /*! The background of the dial. The implicit size of the dial is taken from this component. */ property Component background: Item { id: backgroundItem implicitWidth: backgroundHelper.implicitWidth implicitHeight: backgroundHelper.implicitHeight CircularButtonStyleHelper { id: backgroundHelper control: dialStyle.control property color zeroMarkerColor: "#a8a8a8" property color zeroMarkerColorTransparent: "transparent" property real zeroMarkerLength: outerArcLineWidth * 1.25 property real zeroMarkerWidth: outerArcLineWidth * 0.3 smallestAxis: Math.min(backgroundItem.width, backgroundItem.height) - __tickmarkRadius * 4 } Canvas { id: backgroundCanvas anchors.fill: parent readonly property real xCenter: width / 2 readonly property real yCenter: height / 2 onPaint: { var ctx = getContext("2d"); backgroundHelper.paintBackground(ctx); } } } /*! The handle of the dial. The handle is automatically positioned within the dial, based on the \l handleInset and the implicit width and height of the handle itself. */ property Component handle: Canvas { implicitWidth: __handleRadius * 2 implicitHeight: __handleRadius * 2 HandleStyleHelper { id: handleHelper } onPaint: { var ctx = getContext("2d"); handleHelper.paintHandle(ctx, 1, 1, width - 2, height - 2); } } /*! This component defines each individual tickmark. The position of each tickmark is already set; only the \l {Item::implicitWidth}{implicitWidth} and \l {Item::implicitHeight}{implicitHeight} need to be specified. Each instance of this component has access to the following properties: \table \row \li \c {readonly property int} \b styleData.index \li The index of this tickmark. \row \li \c {readonly property real} \b styleData.value \li The value that this tickmark represents. \endtable */ property Component tickmark: Rectangle { implicitWidth: outerRadius * 0.015 + (styleData.index === 0 || styleData.index === tickmarkCount ? 1 : (styleData.index) / tickmarkCount) * __tickmarkRadius * 0.75 implicitHeight: implicitWidth radius: height / 2 color: styleData.index === 0 ? "transparent" : Qt.rgba(0, 0, 0, 0.266) antialiasing: true border.width: styleData.index === 0 ? Math.max(1, outerRadius * 0.0075) : 0 border.color: Qt.rgba(0, 0, 0, 0.266) } /*! This component defines each individual minor tickmark. The position of each minor tickmark is already set; only the \l {Item::implicitWidth}{implicitWidth} and \l {Item::implicitHeight}{implicitHeight} need to be specified. Each instance of this component has access to the following properties: \table \row \li \c {readonly property int} \b styleData.index \li The index of this tickmark. \row \li \c {readonly property real} \b styleData.value \li The value that this tickmark represents. \endtable By default, no minor tickmark is defined. */ property Component minorTickmark /*! This defines the text of each tickmark label on the dial. Each instance of this component has access to the following properties: \table \row \li \c {readonly property int} \b styleData.index \li The index of this label. \row \li \c {readonly property real} \b styleData.value \li The value that this label represents. \endtable By default, no label is defined. */ property Component tickmarkLabel /*! \internal */ property Component panel: Item { implicitWidth: backgroundLoader.implicitWidth implicitHeight: backgroundLoader.implicitHeight property alias background: backgroundLoader.item property alias circularTickmarkLabel: circularTickmarkLabel_ Loader { id: backgroundLoader sourceComponent: dialStyle.background width: outerRadius * 2 height: width anchors.centerIn: parent } Loader { id: handleLoader sourceComponent: dialStyle.handle x: backgroundLoader.x + __pos.x - width / 2 y: backgroundLoader.y + __pos.y - height / 2 readonly property point __pos: { var radians = 0; if (control.__wrap) { radians = (control.value - control.minimumValue) / (control.maximumValue - control.minimumValue) * (MathUtils.pi2) + backgroundHelper.zeroAngle; } else { radians = -(Math.PI * 8 - (control.value - control.minimumValue) * 10 * Math.PI / (control.maximumValue - control.minimumValue)) / 6; } return MathUtils.centerAlongCircle(backgroundLoader.width / 2, backgroundLoader.height / 2, 0, 0, radians, outerRadius - handleInset) } } CircularTickmarkLabel { id: circularTickmarkLabel_ anchors.fill: backgroundLoader minimumValue: control.minimumValue maximumValue: control.maximumValue stepSize: control.stepSize tickmarksVisible: control.tickmarksVisible minimumValueAngle: -150 maximumValueAngle: 150 tickmarkStepSize: dialStyle.tickmarkStepSize tickmarkInset: dialStyle.tickmarkInset minorTickmarkCount: dialStyle.minorTickmarkCount minorTickmarkInset: dialStyle.minorTickmarkInset labelInset: dialStyle.labelInset labelStepSize: dialStyle.labelStepSize style: CircularTickmarkLabelStyle { tickmark: dialStyle.tickmark minorTickmark: dialStyle.minorTickmark tickmarkLabel: dialStyle.tickmarkLabel } } } }