From 6b4994c265889db2058b7d5850b51ddfc5478754 Mon Sep 17 00:00:00 2001 From: Joerg Bornemann Date: Wed, 5 Dec 2012 13:03:09 +0100 Subject: centralize and fixup example sources install targets This follows suit with aeb036e in qtbase. Change-Id: Ie8580d0a1f38ab9858b0e44c9f99bdc552a1752a Reviewed-by: Oswald Buddenhagen Reviewed-by: hjk --- examples/multimedia/spectrum/app/progressbar.cpp | 140 +++++++++++++++++++++++ 1 file changed, 140 insertions(+) create mode 100644 examples/multimedia/spectrum/app/progressbar.cpp (limited to 'examples/multimedia/spectrum/app/progressbar.cpp') diff --git a/examples/multimedia/spectrum/app/progressbar.cpp b/examples/multimedia/spectrum/app/progressbar.cpp new file mode 100644 index 000000000..79596cdca --- /dev/null +++ b/examples/multimedia/spectrum/app/progressbar.cpp @@ -0,0 +1,140 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the examples 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 Digia Plc 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 "progressbar.h" +#include "spectrum.h" +#include + +ProgressBar::ProgressBar(QWidget *parent) + : QWidget(parent) + , m_bufferLength(0) + , m_recordPosition(0) + , m_playPosition(0) + , m_windowPosition(0) + , m_windowLength(0) +{ + setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed); + setMinimumHeight(30); +#ifdef SUPERIMPOSE_PROGRESS_ON_WAVEFORM + setAutoFillBackground(false); +#endif +} + +ProgressBar::~ProgressBar() +{ + +} + +void ProgressBar::reset() +{ + m_bufferLength = 0; + m_recordPosition = 0; + m_playPosition = 0; + m_windowPosition = 0; + m_windowLength = 0; + update(); +} + +void ProgressBar::paintEvent(QPaintEvent * /*event*/) +{ + QPainter painter(this); + + QColor bufferColor(0, 0, 255); + QColor windowColor(0, 255, 0); + +#ifdef SUPERIMPOSE_PROGRESS_ON_WAVEFORM + bufferColor.setAlphaF(0.5); + windowColor.setAlphaF(0.5); +#else + painter.fillRect(rect(), Qt::black); +#endif + + if (m_bufferLength) { + QRect bar = rect(); + const qreal play = qreal(m_playPosition) / m_bufferLength; + bar.setLeft(rect().left() + play * rect().width()); + const qreal record = qreal(m_recordPosition) / m_bufferLength; + bar.setRight(rect().left() + record * rect().width()); + painter.fillRect(bar, bufferColor); + + QRect window = rect(); + const qreal windowLeft = qreal(m_windowPosition) / m_bufferLength; + window.setLeft(rect().left() + windowLeft * rect().width()); + const qreal windowWidth = qreal(m_windowLength) / m_bufferLength; + window.setWidth(windowWidth * rect().width()); + painter.fillRect(window, windowColor); + } +} + +void ProgressBar::bufferLengthChanged(qint64 bufferSize) +{ + m_bufferLength = bufferSize; + m_recordPosition = 0; + m_playPosition = 0; + m_windowPosition = 0; + m_windowLength = 0; + repaint(); +} + +void ProgressBar::recordPositionChanged(qint64 recordPosition) +{ + Q_ASSERT(recordPosition >= 0); + Q_ASSERT(recordPosition <= m_bufferLength); + m_recordPosition = recordPosition; + repaint(); +} + +void ProgressBar::playPositionChanged(qint64 playPosition) +{ + Q_ASSERT(playPosition >= 0); + Q_ASSERT(playPosition <= m_bufferLength); + m_playPosition = playPosition; + repaint(); +} + +void ProgressBar::windowChanged(qint64 position, qint64 length) +{ + Q_ASSERT(position >= 0); + Q_ASSERT(position <= m_bufferLength); + Q_ASSERT(position + length <= m_bufferLength); + m_windowPosition = position; + m_windowLength = length; + repaint(); +} -- cgit v1.2.3