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https://github.com/zxing/zxing.git
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e1aab01022
Uses Qt SDK + Camera APIs from Qt Mobility. Updated the tutorial which shows how to use it. Updated the installation file included to test without compiling (also advice the tutorial for details). git-svn-id: https://zxing.googlecode.com/svn/trunk@1920 59b500cc-1b3d-0410-9834-0bbf25fbcc57
111 lines
3.6 KiB
C++
111 lines
3.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the demonstration applications of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "button.h"
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#include <QMouseEvent>
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#include <QPainter>
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#include <QTimer>
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Button::Button(QWidget *parent, Qt::WindowFlags f) :
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QLabel(parent, f)
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{
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m_downPixmap = 0;
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m_disabled = false;
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}
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Button::~Button()
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{
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}
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void Button::disableBtn(bool b)
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{
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m_disabled = b;
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if (m_disabled) {
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setPixmap(m_downPixmap);
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} else {
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setPixmap(m_upPixmap);
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}
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}
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void Button::mousePressEvent(QMouseEvent *event)
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{
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if (!m_disabled) {
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event->accept();
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setPixmap(m_downPixmap);
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repaint();
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// Lift button back to up after 300ms
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QTimer::singleShot(300, this, SLOT(backToUp()));
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}
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}
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void Button::backToUp()
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{
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setPixmap(m_upPixmap);
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repaint();
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emit pressed();
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}
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void Button::setPixmap(const QPixmap& p)
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{
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// Set up and down picture for the button
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// Set pixmap
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if (!p.isNull())
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QLabel::setPixmap(p);
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// Make down pixmap if it does not exists
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if (m_downPixmap.isNull()) {
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// Store up pixmap
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m_upPixmap = *pixmap();
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// Create down pixmap
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// Make m_downPixmap as a transparent m_upPixmap
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QPixmap transparent(m_upPixmap.size());
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transparent.fill(Qt::transparent);
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QPainter painter(&transparent);
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painter.setCompositionMode(QPainter::CompositionMode_Source);
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painter.drawPixmap(0, 0, m_upPixmap);
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painter.setCompositionMode(QPainter::CompositionMode_DestinationIn);
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painter.fillRect(transparent.rect(), QColor(0, 0, 0, 150));
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painter.end();
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m_downPixmap = transparent;
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}
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}
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