qtmobility/examples/videowidget/videowidget.cpp
changeset 14 6fbed849b4f4
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/examples/videowidget/videowidget.cpp	Wed Jun 23 19:08:38 2010 +0300
@@ -0,0 +1,115 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "videowidget.h"
+
+#include "videowidgetsurface.h"
+
+#include <QtGui>
+#include <qvideosurfaceformat.h>
+
+//! [0]
+VideoWidget::VideoWidget(QWidget *parent)
+    : QWidget(parent)
+    , surface(0)
+{
+    setAutoFillBackground(false);
+    setAttribute(Qt::WA_NoSystemBackground, true);
+    setAttribute(Qt::WA_PaintOnScreen, true);
+
+    QPalette palette = this->palette();
+    palette.setColor(QPalette::Background, Qt::black);
+    setPalette(palette);
+
+    setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
+
+    surface = new VideoWidgetSurface(this);
+}
+//! [0]
+
+//! [1]
+VideoWidget::~VideoWidget()
+{
+    delete surface;
+}
+//! [1]
+
+//! [2]
+QSize VideoWidget::sizeHint() const
+{
+    return surface->surfaceFormat().sizeHint();
+}
+//! [2]
+
+
+//! [3]
+void VideoWidget::paintEvent(QPaintEvent *event)
+{
+    QPainter painter(this);
+
+    if (surface->isActive()) {
+        const QRect videoRect = surface->videoRect();
+
+        if (!videoRect.contains(event->rect())) {
+            QRegion region = event->region();
+            region.subtract(videoRect);
+
+            QBrush brush = palette().background();
+
+            foreach (const QRect &rect, region.rects())
+                painter.fillRect(rect, brush);
+        }
+
+        surface->paint(&painter);
+    } else {
+        painter.fillRect(event->rect(), palette().background());
+    }
+}
+//! [3]
+
+//! [4]
+void VideoWidget::resizeEvent(QResizeEvent *event)
+{
+    QWidget::resizeEvent(event);
+
+    surface->updateVideoRect();
+}
+//! [4]