1 files changed, 110 insertions, 0 deletions
diff --git a/demos/mobile/qcamera/button.cpp b/demos/mobile/qcamera/button.cpp
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+++ b/demos/mobile/qcamera/button.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "button.h"
+#include <QMouseEvent>
+#include <QPainter>
+#include <QTimer>
+
+Button::Button(QWidget *parent, Qt::WindowFlags f) :
+    QLabel(parent, f)
+{
+    m_downPixmap = 0;
+    m_disabled = false;
+}
+
+Button::~Button()
+{
+}
+
+void Button::disableBtn(bool b)
+{
+    m_disabled = b;
+    if (m_disabled) {
+        setPixmap(m_downPixmap);
+    } else {
+        setPixmap(m_upPixmap);
+    }
+}
+
+void Button::mousePressEvent(QMouseEvent *event)
+{
+    if (!m_disabled) {
+        event->accept();
+        setPixmap(m_downPixmap);
+        repaint();
+        // Lift button back to up after 300ms
+        QTimer::singleShot(300, this, SLOT(backToUp()));
+    }
+}
+
+void Button::backToUp()
+{
+    setPixmap(m_upPixmap);
+    repaint();
+    emit pressed();
+}
+
+void Button::setPixmap(const QPixmap& p)
+{
+    // Set up and down picture for the button
+    // Set pixmap
+    if (!p.isNull())
+        QLabel::setPixmap(p);
+
+    // Make down pixmap if it does not exists
+    if (m_downPixmap.isNull()) {
+        // Store up pixmap
+        m_upPixmap = *pixmap();
+
+        // Create down pixmap
+        // Make m_downPixmap as a transparent m_upPixmap
+        QPixmap transparent(m_upPixmap.size());
+        transparent.fill(Qt::transparent);
+        QPainter painter(&transparent);
+        painter.setCompositionMode(QPainter::CompositionMode_Source);
+        painter.drawPixmap(0, 0, m_upPixmap);
+        painter.setCompositionMode(QPainter::CompositionMode_DestinationIn);
+        painter.fillRect(transparent.rect(), QColor(0, 0, 0, 150));
+        painter.end();
+        m_downPixmap = transparent;
+    }
+
+}