diff options
author | J-P Nurmi <jpnurmi@digia.com> | 2012-10-05 10:42:10 +0200 |
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committer | The Qt Project <gerrit-noreply@qt-project.org> | 2012-10-16 15:29:15 +0200 |
commit | 7501d55ae005cf9a155a6bcbeac468bfde40177d (patch) | |
tree | 2247bea576be9e45b241e50c1db33532211c7f0d /src/widgets/styles/qstyleanimation.cpp | |
parent | e437051ff51d57bcc6937dc23fe6a77bf9897130 (diff) |
Introduce (private) QStyleAnimation
QStyleAnimation handles style animations in a generic fashion by
sending StyleAnimationUpdate events back to the animation target
instead of calling QWidget::update() directly. This decouples style
animations from widgets and makes it possible to run style animations
for QQuickItems (ie. the desktop components).
The next step is to add "QObject* QStyleOption::target" and use that
everywhere instead of the widget pointer passed to various QStyle
methods.
Change-Id: Ib963c54872805fc3f0123ff922f82c9962a68b90
Reviewed-by: J-P Nurmi <jpnurmi@digia.com>
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>
Diffstat (limited to 'src/widgets/styles/qstyleanimation.cpp')
-rw-r--r-- | src/widgets/styles/qstyleanimation.cpp | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/src/widgets/styles/qstyleanimation.cpp b/src/widgets/styles/qstyleanimation.cpp new file mode 100644 index 0000000000..8bc8e9d241 --- /dev/null +++ b/src/widgets/styles/qstyleanimation.cpp @@ -0,0 +1,148 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the QtGui 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 Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/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 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt 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 3.0 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 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qstyleanimation_p.h" +#include <qcoreapplication.h> +#include <qprogressbar.h> +#include <qwidget.h> +#include <qevent.h> + +QT_BEGIN_NAMESPACE + +#ifndef QT_NO_ANIMATION + +QStyleAnimation::QStyleAnimation(QObject *target) : QAbstractAnimation(target), + _startTime(QTime::currentTime()) +{ +} + +QStyleAnimation::~QStyleAnimation() +{ +} + +int QStyleAnimation::duration() const +{ + return -1; +} + +QObject *QStyleAnimation::target() const +{ + return parent(); +} + +QTime QStyleAnimation::startTime() const +{ + return _startTime; +} + +void QStyleAnimation::setStartTime(const QTime &time) +{ + _startTime = time; +} + +bool QStyleAnimation::isUpdateNeeded() const +{ + return true; +} + +void QStyleAnimation::updateCurrentTime(int) +{ + if (target()->isWidgetType()) { + QWidget *widget = static_cast<QWidget *>(target()); + if (!widget->isVisible() || widget->window()->isMinimized()) + stop(); + } + + if (isUpdateNeeded()) { + QEvent event(QEvent::StyleAnimationUpdate); + QCoreApplication::sendEvent(target(), &event); + } +} + +QProgressStyleAnimation::QProgressStyleAnimation(int speed, QObject *target) : + QStyleAnimation(target), _speed(speed), _step(-1) +{ +} + +int QProgressStyleAnimation::animationStep() const +{ + return currentTime() / (1000.0 / _speed); +} + +int QProgressStyleAnimation::progressStep(int width) const +{ + int step = animationStep(); + int progress = (step * width / _speed) % width; + if (((step * width / _speed) % (2 * width)) >= width) + progress = width - progress; + return progress; +} + +int QProgressStyleAnimation::speed() const +{ + return _speed; +} + +void QProgressStyleAnimation::setSpeed(int speed) +{ + _speed = speed; +} + +bool QProgressStyleAnimation::isUpdateNeeded() const +{ + QProgressBar *pb = qobject_cast<QProgressBar*>(parent()); + if (pb && pb->minimum() == 0 && pb->maximum() == 0) { + int current = animationStep(); + if (_step == -1 || _step != current) + { + _step = current; + return true; + } + } else { + // the progress bar is no longer indeterminate -> stop + const_cast<QProgressStyleAnimation *>(this)->stop(); + } + return false; +} + +#endif // QT_NO_ANIMATION + +QT_END_NAMESPACE |