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Diffstat (limited to 'src/extras/Styles/Base/CircularTickmarkLabelStyle.qml')
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1 files changed, 304 insertions, 0 deletions
diff --git a/src/extras/Styles/Base/CircularTickmarkLabelStyle.qml b/src/extras/Styles/Base/CircularTickmarkLabelStyle.qml new file mode 100644 index 000000000..010e92459 --- /dev/null +++ b/src/extras/Styles/Base/CircularTickmarkLabelStyle.qml @@ -0,0 +1,304 @@ +/**************************************************************************** +** +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the Qt Quick Extras 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 2.2 +import QtQuick.Controls.Private 1.0 +import QtQuick.Extras.Private 1.0 +import QtQuick.Extras.Private.CppUtils 1.0 + +Style { + id: circularTickmarkLabelStyle + + /*! + The distance from the center of the control to the outer edge. + */ + readonly property real outerRadius: Math.min(control.width, control.height) * 0.5 + + property QtObject __protectedScope: QtObject { + /*! + Converts a value expressed as a percentage of \l outerRadius to + a pixel value. + */ + function toPixels(percentageOfOuterRadius) { + return percentageOfOuterRadius * outerRadius; + } + } + + /*! + This component defines each individual tickmark. The position of each + tickmark is already set; only the size needs to be specified. + */ + property Component tickmark: Rectangle { + width: outerRadius * 0.02 + antialiasing: true + height: outerRadius * 0.06 + color: "#c8c8c8" + } + + /*! + This component defines each individual minor tickmark. The position of + each minor tickmark is already set; only the size needs to be specified. + */ + property Component minorTickmark: Rectangle { + width: outerRadius * 0.01 + antialiasing: true + height: outerRadius * 0.03 + color: "#c8c8c8" + } + + /*! + This defines the text of each tickmark label on the gauge. + */ + property Component tickmarkLabel: Text { + font.pixelSize: Math.max(6, __protectedScope.toPixels(0.12)) + text: styleData.value + color: "#c8c8c8" + antialiasing: true + horizontalAlignment: Text.AlignHCenter + verticalAlignment: Text.AlignVCenter + } + + /*! \internal */ + property Component panel: Item { + id: panelItem + implicitWidth: 250 + implicitHeight: 250 + + function rangeUsed(count, stepSize) { + return (((count - 1) * stepSize) / (control.maximumValue - control.minimumValue)) * control.angleRange; + } + + readonly property real tickmarkSectionSize: rangeUsed(control.tickmarkCount, control.tickmarkStepSize) / (control.tickmarkCount - 1) + readonly property real tickmarkSectionValue: (control.maximumValue - control.minimumValue) / (control.tickmarkCount - 1) + readonly property real minorTickmarkSectionSize: tickmarkSectionSize / (control.minorTickmarkCount + 1) + readonly property real minorTickmarkSectionValue: tickmarkSectionValue / (control.minorTickmarkCount + 1) + readonly property int totalMinorTickmarkCount: { + // The size of each section within two major tickmarks, expressed as a percentage. + var minorSectionPercentage = 1 / (control.minorTickmarkCount + 1); + // The amount of major tickmarks not able to be displayed; will be 0 if they all fit. + var tickmarksNotDisplayed = control.__tickmarkCount - control.tickmarkCount; + var count = control.minorTickmarkCount * (control.tickmarkCount - 1); + // We'll try to display as many minor tickmarks as we can to fill up the space. + count + tickmarksNotDisplayed / minorSectionPercentage; + } + readonly property real labelSectionSize: rangeUsed(control.labelCount, control.labelStepSize) / (control.labelCount - 1) + + function toPixels(percentageOfOuterRadius) { + return percentageOfOuterRadius * outerRadius; + } + + /*! + Returns the angle of \a marker (in the range 0 ... n - 1, where n + is the amount of markers) on the gauge where sections are of size + tickmarkSectionSize. + */ + function tickmarkAngleFromIndex(tickmarkIndex) { + return tickmarkIndex * tickmarkSectionSize + control.minimumValueAngle; + } + + function labelAngleFromIndex(labelIndex) { + return labelIndex * labelSectionSize + control.minimumValueAngle; + } + + function labelPosFromIndex(index, labelWidth, labelHeight) { + return MathUtils.centerAlongCircle(outerRadius, outerRadius, labelWidth, labelHeight, + MathUtils.degToRadOffset(labelAngleFromIndex(index)), + outerRadius - control.labelInset) + } + + function minorTickmarkAngleFromIndex(minorTickmarkIndex) { + var baseAngle = tickmarkAngleFromIndex(Math.floor(minorTickmarkIndex / control.minorTickmarkCount)); + // + minorTickmarkSectionSize because we don't want the first minor tickmark to start on top of its "parent" tickmark. + var relativeMinorAngle = (minorTickmarkIndex % control.minorTickmarkCount * minorTickmarkSectionSize) + minorTickmarkSectionSize; + return baseAngle + relativeMinorAngle; + } + + function tickmarkValueFromIndex(majorIndex) { + return (majorIndex * tickmarkSectionValue) + control.minimumValue; + } + + function tickmarkValueFromMinorIndex(minorIndex) { + var majorIndex = Math.floor(minorIndex / control.minorTickmarkCount); + var relativeMinorIndex = minorIndex % control.minorTickmarkCount; + return tickmarkValueFromIndex(majorIndex) + ((relativeMinorIndex * minorTickmarkSectionValue) + minorTickmarkSectionValue); + } + + Loader { + active: control.tickmarksVisible && tickmark != null + width: outerRadius * 2 + height: outerRadius * 2 + anchors.centerIn: parent + + sourceComponent: Repeater { + id: tickmarkRepeater + model: control.tickmarkCount + delegate: Loader { + id: tickmarkLoader + objectName: "tickmark" + styleData.index + x: tickmarkRepeater.width / 2 + y: tickmarkRepeater.height / 2 + + transform: [ + Translate { + y: -outerRadius + control.tickmarkInset + }, + Rotation { + angle: panelItem.tickmarkAngleFromIndex(styleData.index) - __tickmarkWidthAsAngle / 2 + } + ] + + sourceComponent: tickmark + + property int __index: index + property QtObject styleData: QtObject { + readonly property alias index: tickmarkLoader.__index + readonly property real value: tickmarkValueFromIndex(index) + } + + readonly property real __tickmarkWidthAsAngle: MathUtils.radToDeg((width / (MathUtils.pi2 * outerRadius)) * MathUtils.pi2) + } + } + } + Loader { + active: control.tickmarksVisible && minorTickmark != null + width: outerRadius * 2 + height: outerRadius * 2 + anchors.centerIn: parent + + sourceComponent: Repeater { + id: minorRepeater + anchors.fill: parent + model: totalMinorTickmarkCount + delegate: Loader { + id: minorTickmarkLoader + objectName: "minorTickmark" + styleData.index + x: minorRepeater.width / 2 + y: minorRepeater.height / 2 + transform: [ + Translate { + y: -outerRadius + control.minorTickmarkInset + }, + Rotation { + angle: panelItem.minorTickmarkAngleFromIndex(styleData.index) - __minorTickmarkWidthAsAngle / 2 + } + ] + + sourceComponent: minorTickmark + + property int __index: index + property QtObject styleData: QtObject { + readonly property alias index: minorTickmarkLoader.__index + readonly property real value: tickmarkValueFromMinorIndex(index) + } + + readonly property real __minorTickmarkWidthAsAngle: MathUtils.radToDeg((width / (MathUtils.pi2 * outerRadius)) * MathUtils.pi2) + } + } + } + Loader { + id: labelLoader + active: control.tickmarksVisible && tickmarkLabel != null + width: outerRadius * 2 + height: outerRadius * 2 + anchors.centerIn: parent + + sourceComponent: Item { + id: labelItem + width: outerRadius * 2 + height: outerRadius * 2 + anchors.centerIn: parent + + Connections { + target: control + onMinimumValueChanged: valueTextModel.update() + onMaximumValueChanged: valueTextModel.update() + onTickmarkStepSizeChanged: valueTextModel.update() + onLabelStepSizeChanged: valueTextModel.update() + } + + Repeater { + id: labelItemRepeater + + Component.onCompleted: valueTextModel.update(); + + model: ListModel { + id: valueTextModel + + function update() { + if (control.labelStepSize === 0) { + return; + } + + // Make bigger if it's too small and vice versa. + // +1 because we want to show 11 values, with, for example: 0, 10, 20... 100. + var difference = control.labelCount - count; + if (difference > 0) { + for (; difference > 0; --difference) { + append({ value: 0 }); + } + } else if (difference < 0) { + for (; difference < 0; ++difference) { + remove(count - 1); + } + } + + var index = 0; + for (var value = control.minimumValue; + value <= control.maximumValue && index < count; + value += control.labelStepSize, ++index) { + setProperty(index, "value", value); + } + } + } + delegate: Loader { + id: tickmarkLabelDelegateLoader + sourceComponent: tickmarkLabel + x: pos.x + y: pos.y + + readonly property point pos: panelItem.labelPosFromIndex(index, width, height); + + readonly property int __index: index + property QtObject styleData: QtObject { + readonly property var value: index != -1 ? labelItemRepeater.model.get(index).value : 0 + readonly property alias index: tickmarkLabelDelegateLoader.__index + } + } + } + } + } + } +} |