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Diffstat (limited to 'examples/svg/embedded/fluidlauncher/slideshow.cpp')
| -rw-r--r-- | examples/svg/embedded/fluidlauncher/slideshow.cpp | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/examples/svg/embedded/fluidlauncher/slideshow.cpp b/examples/svg/embedded/fluidlauncher/slideshow.cpp new file mode 100644 index 0000000..5a3da0d --- /dev/null +++ b/examples/svg/embedded/fluidlauncher/slideshow.cpp @@ -0,0 +1,232 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the demonstration applications 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 <QBasicTimer> +#include <QList> +#include <QImage> +#include <QDir> +#include <QPainter> +#include <QPaintEvent> + +#include <QDebug> + + +#include "slideshow.h" + + +class SlideShowPrivate +{ +public: + SlideShowPrivate(); + + int currentSlide; + int slideInterval; + QBasicTimer interSlideTimer; + QStringList imagePaths; + + void showNextSlide(); +}; + + + +SlideShowPrivate::SlideShowPrivate() +{ + currentSlide = 0; + slideInterval = 10000; // Default to 10 sec interval +} + + +void SlideShowPrivate::showNextSlide() +{ + currentSlide++; + if (currentSlide >= imagePaths.size()) + currentSlide = 0; +} + + + +SlideShow::SlideShow(QWidget* parent) : + QWidget(parent) +{ + d = new SlideShowPrivate; + + setAttribute(Qt::WA_StaticContents, true); + setAttribute(Qt::WA_OpaquePaintEvent, true); + setAttribute(Qt::WA_NoSystemBackground, true); + + setMouseTracking(true); +} + + +SlideShow::~SlideShow() +{ + delete d; +} + + +void SlideShow::addImageDir(QString dirName) +{ + QDir dir(dirName); + + QStringList fileNames = dir.entryList(QDir::Files | QDir::Readable, QDir::Name); + + for (int i=0; i<fileNames.count(); i++) + d->imagePaths << dir.absoluteFilePath(fileNames[i]); +} + +void SlideShow::addImage(QString filename) +{ + d->imagePaths << filename; +} + + +void SlideShow::clearImages() +{ + d->imagePaths.clear(); +} + + +void SlideShow::startShow() +{ + d->interSlideTimer.start(d->slideInterval, this); + d->showNextSlide(); + update(); +} + + +void SlideShow::stopShow() +{ + d->interSlideTimer.stop(); +} + + +int SlideShow::slideInterval() +{ + return d->slideInterval; +} + +void SlideShow::setSlideInterval(int val) +{ + d->slideInterval = val; +} + + +void SlideShow::timerEvent(QTimerEvent* event) +{ + Q_UNUSED(event); + d->showNextSlide(); + update(); +} + + +void SlideShow::paintEvent(QPaintEvent *event) +{ + QPainter painter(this); + painter.setRenderHint(QPainter::Antialiasing, false); + + if (d->imagePaths.size() > 0) { + QPixmap slide = QPixmap(d->imagePaths[d->currentSlide]); + QSize slideSize = slide.size(); + QSize scaledSize = QSize(qMin(slideSize.width(), size().width()), + qMin(slideSize.height(), size().height())); + if (slideSize != scaledSize) + slide = slide.scaled(scaledSize, Qt::KeepAspectRatio); + + QRect pixmapRect(qMax( (size().width() - slide.width())/2, 0), + qMax( (size().height() - slide.height())/2, 0), + slide.width(), + slide.height()); + + if (pixmapRect.top() > 0) { + // Fill in top & bottom rectangles: + painter.fillRect(0, 0, size().width(), pixmapRect.top(), Qt::black); + painter.fillRect(0, pixmapRect.bottom(), size().width(), size().height(), Qt::black); + } + + if (pixmapRect.left() > 0) { + // Fill in left & right rectangles: + painter.fillRect(0, 0, pixmapRect.left(), size().height(), Qt::black); + painter.fillRect(pixmapRect.right(), 0, size().width(), size().height(), Qt::black); + } + + painter.drawPixmap(pixmapRect, slide); + + } else + painter.fillRect(event->rect(), Qt::black); +} + + +void SlideShow::keyPressEvent(QKeyEvent* event) +{ + Q_UNUSED(event); + emit inputReceived(); +} + + +void SlideShow::mouseMoveEvent(QMouseEvent* event) +{ + Q_UNUSED(event); + emit inputReceived(); +} + + +void SlideShow::mousePressEvent(QMouseEvent* event) +{ + Q_UNUSED(event); + emit inputReceived(); +} + + +void SlideShow::mouseReleaseEvent(QMouseEvent* event) +{ + Q_UNUSED(event); + emit inputReceived(); +} + + +void SlideShow::showEvent(QShowEvent * event ) +{ + Q_UNUSED(event); +#ifndef QT_NO_CURSOR + setCursor(Qt::BlankCursor); +#endif +} + |