diff options
Diffstat (limited to 'src/widgets/widgets/qabstractslider.cpp')
-rw-r--r-- | src/widgets/widgets/qabstractslider.cpp | 55 |
1 files changed, 40 insertions, 15 deletions
diff --git a/src/widgets/widgets/qabstractslider.cpp b/src/widgets/widgets/qabstractslider.cpp index 283cac80da..8cd35495e9 100644 --- a/src/widgets/widgets/qabstractslider.cpp +++ b/src/widgets/widgets/qabstractslider.cpp @@ -1,31 +1,37 @@ /**************************************************************************** ** -** Copyright (C) 2015 The Qt Company Ltd. -** Contact: http://www.qt.io/licensing/ +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtWidgets module of the Qt Toolkit. ** -** $QT_BEGIN_LICENSE:LGPL21$ +** $QT_BEGIN_LICENSE:LGPL$ ** 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 http://www.qt.io/terms-conditions. For further -** information use the contact form at http://www.qt.io/contact-us. +** 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 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. +** 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. ** -** 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. +** 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. ** ** $QT_END_LICENSE$ ** @@ -205,7 +211,7 @@ QT_BEGIN_NAMESPACE QAbstractSliderPrivate::QAbstractSliderPrivate() : minimum(0), maximum(99), pageStep(10), value(0), position(0), pressValue(-1), - singleStep(1), offset_accumulated(0), tracking(true), + singleStep(1), singleStepFromItemView(-1), viewMayChangeSingleStep(true), offset_accumulated(0), tracking(true), blocktracking(false), pressed(false), invertedAppearance(false), invertedControls(false), orientation(Qt::Horizontal), repeatAction(QAbstractSlider::SliderNoAction) @@ -378,6 +384,11 @@ int QAbstractSlider::maximum() const void QAbstractSlider::setSingleStep(int step) { Q_D(QAbstractSlider); + + d->viewMayChangeSingleStep = (step < 0); + if (step < 0 && d->singleStepFromItemView > 0) + step = d->singleStepFromItemView; + if (step != d->singleStep) d->setSteps(step, d->pageStep); } @@ -747,6 +758,8 @@ void QAbstractSlider::wheelEvent(QWheelEvent * e) Q_D(QAbstractSlider); e->ignore(); int delta = e->delta(); + if (e->inverted()) + delta = -delta; if (d->scrollByDelta(e->orientation(), e->modifiers(), delta)) e->accept(); } @@ -936,6 +949,18 @@ bool QAbstractSlider::event(QEvent *e) return QWidget::event(e); } +// This function is called from itemviews when doing scroll per pixel (on updateGeometries()) +// It will not have any effect if there has been a call to setSingleStep with +// a 'reasonable' value (since viewMayChangeSingleStep will be set to false). +// (If setSingleStep is called with -1 it will however allow the views to change singleStep.) + +void QAbstractSliderPrivate::itemviewChangeSingleStep(int step) +{ + singleStepFromItemView = step; + if (viewMayChangeSingleStep && singleStep != step) + setSteps(step, pageStep); +} + QT_END_NAMESPACE #include "moc_qabstractslider.cpp" |