examples/network/downloadmanager/textprogressbar.cpp
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/network/downloadmanager/textprogressbar.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,99 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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 "textprogressbar.h"
+#include <QByteArray>
+#include <stdio.h>
+
+TextProgressBar::TextProgressBar()
+    : value(0), maximum(-1), iteration(0)
+{
+}
+
+void TextProgressBar::clear()
+{
+    printf("\n");
+    fflush(stdout);
+
+    iteration = 0;
+    value = 0;
+    maximum = -1;
+}
+
+void TextProgressBar::update()
+{
+    ++iteration;
+
+    if (maximum > 0) {
+        // we know the maximum
+        // draw a progress bar
+        int percent = value * 100 / maximum;
+        int hashes = percent / 2;
+
+        QByteArray progressbar(hashes, '#');
+        if (percent % 2)
+            progressbar += '>';
+
+        printf("\r[%-50s] %3d%% %s     ",
+               progressbar.constData(),
+               percent,
+               qPrintable(message));
+    } else {
+        // we don't know the maximum, so we can't draw a progress bar
+        int center = (iteration % 48) + 1; // 50 spaces, minus 2
+        QByteArray before(qMax(center - 2, 0), ' ');
+        QByteArray after(qMin(center + 2, 50), ' ');
+
+        printf("\r[%s###%s]      %s      ",
+               before.constData(), after.constData(), qPrintable(message));
+    }
+}
+
+void TextProgressBar::setMessage(const QString &m)
+{
+    message = m;
+}
+
+void TextProgressBar::setStatus(qint64 val, qint64 max)
+{
+    value = val;
+    maximum = max;
+}