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Diffstat (limited to 'src/gui/painting/qrgba64_p.h')
-rw-r--r-- | src/gui/painting/qrgba64_p.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/gui/painting/qrgba64_p.h b/src/gui/painting/qrgba64_p.h new file mode 100644 index 0000000000..a1452af8d9 --- /dev/null +++ b/src/gui/painting/qrgba64_p.h @@ -0,0 +1,83 @@ +/**************************************************************************** +** +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** 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 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QRGBA64_P_H +#define QRGBA64_P_H + +#include <QtGui/qrgba64.h> +#include <QtGui/private/qdrawhelper_p.h> + +QT_BEGIN_NAMESPACE + +inline QRgba64 combineAlpha256(QRgba64 rgba64, uint alpha256) +{ + return QRgba64::fromRgba64(rgba64.red(), rgba64.green(), rgba64.blue(), (rgba64.alpha() * alpha256) >> 8); +} + +inline QRgba64 multiplyAlpha256(QRgba64 rgba64, uint alpha256) +{ + return QRgba64::fromRgba64((rgba64.red() * alpha256) >> 8, + (rgba64.green() * alpha256) >> 8, + (rgba64.blue() * alpha256) >> 8, + (rgba64.alpha() * alpha256) >> 8); +} + +inline QRgba64 multiplyAlpha255(QRgba64 rgba64, uint alpha255) +{ + return QRgba64::fromRgba64(qt_div_255(rgba64.red() * alpha255), + qt_div_255(rgba64.green() * alpha255), + qt_div_255(rgba64.blue() * alpha255), + qt_div_255(rgba64.alpha() * alpha255)); +} + +inline QRgba64 multiplyAlpha65535(QRgba64 rgba64, uint alpha65535) +{ + return QRgba64::fromRgba64(qt_div_65535(rgba64.red() * alpha65535), + qt_div_65535(rgba64.green() * alpha65535), + qt_div_65535(rgba64.blue() * alpha65535), + qt_div_65535(rgba64.alpha() * alpha65535)); +} + +inline QRgba64 interpolate256(QRgba64 x, uint alpha1, QRgba64 y, uint alpha2) +{ + return QRgba64::fromRgba64(multiplyAlpha256(x, alpha1) + multiplyAlpha256(y, alpha2)); +} + +inline QRgba64 interpolate255(QRgba64 x, uint alpha1, QRgba64 y, uint alpha2) +{ + return QRgba64::fromRgba64(multiplyAlpha255(x, alpha1) + multiplyAlpha255(y, alpha2)); +} + +QT_END_NAMESPACE + +#endif // QRGBA64_P_H |