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Diffstat (limited to 'src/extras/Styles/Base/HandleStyleHelper.qml')
-rw-r--r-- | src/extras/Styles/Base/HandleStyleHelper.qml | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/src/extras/Styles/Base/HandleStyleHelper.qml b/src/extras/Styles/Base/HandleStyleHelper.qml new file mode 100644 index 000000000..61ad3bb3b --- /dev/null +++ b/src/extras/Styles/Base/HandleStyleHelper.qml @@ -0,0 +1,91 @@ +/**************************************************************************** +** +** 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 + +QtObject { + id: handleStyleHelper + + property color handleColorTop: "#969696" + property color handleColorBottom: Qt.rgba(0.9, 0.9, 0.9, 0.298) + property real handleColorBottomStop: 0.7 + + property color handleRingColorTop: "#b0b0b0" + property color handleRingColorBottom: "transparent" + + /*! + If \a ctx is the only argument, this is equivalent to calling + paintHandle(\c ctx, \c 0, \c 0, \c ctx.canvas.width, \c ctx.canvas.height). + */ + function paintHandle(ctx, handleX, handleY, handleWidth, handleHeight) { + ctx.reset(); + + if (handleWidth < 0) + return; + + if (arguments.length == 1) { + handleX = 0; + handleY = 0; + handleWidth = ctx.canvas.width; + handleHeight = ctx.canvas.height; + } + + ctx.beginPath(); + var gradient = ctx.createRadialGradient(handleX, handleY, handleWidth / 2, + handleX, handleY, handleWidth); + gradient.addColorStop(0, handleColorTop); + gradient.addColorStop(handleColorBottomStop, handleColorBottom); + ctx.ellipse(handleX, handleY, handleWidth, handleHeight); + ctx.fillStyle = gradient; + ctx.fill(); + + /* Draw the ring gradient around the handle. */ + // Clip first, so we only draw inside the ring. + ctx.beginPath(); + ctx.ellipse(handleX, handleY, handleWidth, handleHeight); + ctx.ellipse(handleX + 2, handleY + 2, handleWidth - 4, handleHeight - 4); + ctx.clip(); + + ctx.beginPath(); + gradient = ctx.createLinearGradient(handleX + handleWidth / 2, handleY, + handleX + handleWidth / 2, handleY + handleHeight); + gradient.addColorStop(0, handleRingColorTop); + gradient.addColorStop(1, handleRingColorBottom); + ctx.ellipse(handleX, handleY, handleWidth, handleHeight); + ctx.fillStyle = gradient; + ctx.fill(); + } +} |