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// qsamplerChannelStrip.cpp |
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// |
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/**************************************************************************** |
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Copyright (C) 2004-2007, rncbc aka Rui Nuno Capela. All rights reserved. |
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Copyright (C) 2007, Christian Schoenebeck |
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|
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This program is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public License |
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as published by the Free Software Foundation; either version 2 |
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of the License, or (at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License along |
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with this program; if not, write to the Free Software Foundation, Inc., |
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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|
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*****************************************************************************/ |
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|
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#include "qsamplerAbout.h" |
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#include "qsamplerChannelStrip.h" |
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|
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#include "qsamplerMainForm.h" |
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|
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#include <QDragEnterEvent> |
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#include <QUrl> |
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|
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#include <math.h> |
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|
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// Channel status/usage usage limit control. |
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#define QSAMPLER_ERROR_LIMIT 3 |
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|
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namespace QSampler { |
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|
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ChannelStrip::ChannelStrip(QWidget* parent, Qt::WFlags f) : QWidget(parent, f) { |
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ui.setupUi(this); |
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|
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// Initialize locals. |
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m_pChannel = NULL; |
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m_iDirtyChange = 0; |
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m_iErrorCount = 0; |
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|
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// Try to restore normal window positioning. |
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adjustSize(); |
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|
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QObject::connect(ui.ChannelSetupPushButton, |
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SIGNAL(clicked()), |
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SLOT(channelSetup())); |
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QObject::connect(ui.ChannelMutePushButton, |
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SIGNAL(toggled(bool)), |
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SLOT(channelMute(bool))); |
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QObject::connect(ui.ChannelSoloPushButton, |
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SIGNAL(toggled(bool)), |
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SLOT(channelSolo(bool))); |
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QObject::connect(ui.VolumeSlider, |
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SIGNAL(valueChanged(int)), |
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SLOT(volumeChanged(int))); |
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QObject::connect(ui.VolumeSpinBox, |
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SIGNAL(valueChanged(int)), |
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SLOT(volumeChanged(int))); |
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QObject::connect(ui.ChannelEditPushButton, |
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SIGNAL(clicked()), |
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SLOT(channelEdit())); |
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} |
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|
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ChannelStrip::~ChannelStrip() { |
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// Destroy existing channel descriptor. |
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if (m_pChannel) |
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delete m_pChannel; |
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m_pChannel = NULL; |
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} |
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|
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|
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// Window drag-n-drop event handlers. |
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void ChannelStrip::dragEnterEvent ( QDragEnterEvent* pDragEnterEvent ) |
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{ |
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if (m_pChannel == NULL) |
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return; |
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|
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bool bAccept = false; |
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|
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if (pDragEnterEvent->source() == NULL) { |
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const QMimeData *pMimeData = pDragEnterEvent->mimeData(); |
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if (pMimeData && pMimeData->hasUrls()) { |
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QListIterator<QUrl> iter(pMimeData->urls()); |
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while (iter.hasNext()) { |
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const QString& sFilename = iter.next().toLocalFile(); |
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if (!sFilename.isEmpty()) { |
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bAccept = qsamplerChannel::isInstrumentFile(sFilename); |
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break; |
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} |
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} |
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} |
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} |
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|
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if (bAccept) |
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pDragEnterEvent->accept(); |
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else |
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pDragEnterEvent->ignore(); |
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} |
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|
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|
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void ChannelStrip::dropEvent ( QDropEvent* pDropEvent ) |
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{ |
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if (m_pChannel == NULL) |
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return; |
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|
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if (pDropEvent->source()) |
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return; |
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|
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const QMimeData *pMimeData = pDropEvent->mimeData(); |
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if (pMimeData && pMimeData->hasUrls()) { |
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QStringList files; |
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QListIterator<QUrl> iter(pMimeData->urls()); |
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while (iter.hasNext()) { |
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const QString& sFilename = iter.next().toLocalFile(); |
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if (!sFilename.isEmpty()) { |
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// Go and set the dropped instrument filename... |
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m_pChannel->setInstrument(sFilename, 0); |
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// Open up the channel dialog. |
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channelSetup(); |
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break; |
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} |
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} |
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} |
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} |
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|
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|
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// Channel strip setup formal initializer. |
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void ChannelStrip::setup ( qsamplerChannel *pChannel ) |
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{ |
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// Destroy any previous channel descriptor; |
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// (remember that once setup we own it!) |
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if (m_pChannel) |
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delete m_pChannel; |
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|
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// Set the new one... |
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m_pChannel = pChannel; |
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|
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// Stabilize this around. |
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updateChannelInfo(); |
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|
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// We'll accept drops from now on... |
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if (m_pChannel) |
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setAcceptDrops(true); |
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} |
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|
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// Channel secriptor accessor. |
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qsamplerChannel *ChannelStrip::channel (void) |
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{ |
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return m_pChannel; |
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} |
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|
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|
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// Messages view font accessors. |
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QFont ChannelStrip::displayFont (void) |
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{ |
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return ui.EngineNameTextLabel->font(); |
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} |
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|
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void ChannelStrip::setDisplayFont ( const QFont & font ) |
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{ |
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ui.EngineNameTextLabel->setFont(font); |
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ui.MidiPortChannelTextLabel->setFont(font); |
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ui.InstrumentNameTextLabel->setFont(font); |
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ui.InstrumentStatusTextLabel->setFont(font); |
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} |
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|
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|
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// Channel display background effect. |
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void ChannelStrip::setDisplayEffect ( bool bDisplayEffect ) |
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{ |
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QPalette pal; |
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pal.setColor(QPalette::Foreground, Qt::yellow); |
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ui.EngineNameTextLabel->setPalette(pal); |
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ui.MidiPortChannelTextLabel->setPalette(pal); |
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pal.setColor(QPalette::Foreground, Qt::green); |
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if (bDisplayEffect) { |
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QPixmap pm(":/icons/displaybg1.png"); |
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pal.setBrush(QPalette::Background, QBrush(pm)); |
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} else { |
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pal.setColor(QPalette::Background, Qt::black); |
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} |
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ui.ChannelInfoFrame->setPalette(pal); |
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ui.StreamVoiceCountTextLabel->setPalette(pal); |
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} |
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|
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|
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// Maximum volume slider accessors. |
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void ChannelStrip::setMaxVolume ( int iMaxVolume ) |
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{ |
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m_iDirtyChange++; |
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ui.VolumeSlider->setRange(0, iMaxVolume); |
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ui.VolumeSpinBox->setRange(0, iMaxVolume); |
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m_iDirtyChange--; |
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} |
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|
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|
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// Channel setup dialog slot. |
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bool ChannelStrip::channelSetup (void) |
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{ |
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if (m_pChannel == NULL) |
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return false; |
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|
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// Invoke the channel setup dialog. |
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bool bResult = m_pChannel->channelSetup(this); |
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// Notify that this channel has changed. |
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if (bResult) |
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emit channelChanged(this); |
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|
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return bResult; |
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} |
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|
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|
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// Channel mute slot. |
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bool ChannelStrip::channelMute ( bool bMute ) |
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{ |
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if (m_pChannel == NULL) |
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return false; |
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|
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// Invoke the channel mute method. |
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bool bResult = m_pChannel->setChannelMute(bMute); |
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// Notify that this channel has changed. |
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if (bResult) |
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emit channelChanged(this); |
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|
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return bResult; |
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} |
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|
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|
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// Channel solo slot. |
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bool ChannelStrip::channelSolo ( bool bSolo ) |
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{ |
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if (m_pChannel == NULL) |
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return false; |
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|
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// Invoke the channel solo method. |
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bool bResult = m_pChannel->setChannelSolo(bSolo); |
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// Notify that this channel has changed. |
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if (bResult) |
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emit channelChanged(this); |
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|
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return bResult; |
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} |
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|
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|
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// Channel edit slot. |
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void ChannelStrip::channelEdit (void) |
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{ |
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if (m_pChannel == NULL) |
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return; |
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|
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m_pChannel->editChannel(); |
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} |
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|
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|
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// Channel reset slot. |
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bool ChannelStrip::channelReset (void) |
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{ |
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if (m_pChannel == NULL) |
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return false; |
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|
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// Invoke the channel reset method. |
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bool bResult = m_pChannel->channelReset(); |
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// Notify that this channel has changed. |
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if (bResult) |
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emit channelChanged(this); |
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|
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return bResult; |
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} |
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|
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|
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// Update the channel instrument name. |
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bool ChannelStrip::updateInstrumentName ( bool bForce ) |
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{ |
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if (m_pChannel == NULL) |
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return false; |
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|
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// Do we refresh the actual name? |
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if (bForce) |
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m_pChannel->updateInstrumentName(); |
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|
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// Instrument name... |
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if (m_pChannel->instrumentName().isEmpty()) { |
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if (m_pChannel->instrumentStatus() >= 0) |
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ui.InstrumentNameTextLabel->setText(' ' + qsamplerChannel::loadingInstrument()); |
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else |
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ui.InstrumentNameTextLabel->setText(' ' + qsamplerChannel::noInstrumentName()); |
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} else |
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ui.InstrumentNameTextLabel->setText(' ' + m_pChannel->instrumentName()); |
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|
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return true; |
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} |
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|
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|
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// Do the dirty volume change. |
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bool ChannelStrip::updateChannelVolume (void) |
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{ |
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if (m_pChannel == NULL) |
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return false; |
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|
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// Convert... |
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#ifdef CONFIG_ROUND |
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int iVolume = (int) ::round(100.0 * m_pChannel->volume()); |
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#else |
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double fIPart = 0.0; |
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double fFPart = ::modf(100.0 * m_pChannel->volume(), &fIPart); |
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int iVolume = (int) fIPart; |
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if (fFPart >= +0.5) |
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iVolume++; |
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else |
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if (fFPart <= -0.5) |
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iVolume--; |
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#endif |
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|
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// And clip... |
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if (iVolume < 0) |
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iVolume = 0; |
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|
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// Flag it here, to avoid infinite recursion. |
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m_iDirtyChange++; |
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ui.VolumeSlider->setValue(iVolume); |
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ui.VolumeSpinBox->setValue(iVolume); |
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m_iDirtyChange--; |
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|
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return true; |
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} |
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|
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|
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// Update whole channel info state. |
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bool ChannelStrip::updateChannelInfo (void) |
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{ |
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if (m_pChannel == NULL) |
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return false; |
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|
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// Check for error limit/recycle... |
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if (m_iErrorCount > QSAMPLER_ERROR_LIMIT) |
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return true; |
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|
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// Update strip caption. |
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QString sText = m_pChannel->channelName(); |
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setWindowTitle(sText); |
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ui.ChannelSetupPushButton->setText(sText); |
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|
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// Check if we're up and connected. |
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MainForm* pMainForm = MainForm::getInstance(); |
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if (pMainForm->client() == NULL) |
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return false; |
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|
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// Read actual channel information. |
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m_pChannel->updateChannelInfo(); |
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|
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// Engine name... |
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if (m_pChannel->engineName().isEmpty()) |
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ui.EngineNameTextLabel->setText(' ' + qsamplerChannel::noEngineName()); |
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else |
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ui.EngineNameTextLabel->setText(' ' + m_pChannel->engineName()); |
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|
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// Instrument name... |
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updateInstrumentName(false); |
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|
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// MIDI Port/Channel... |
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QString sMidiPortChannel = QString::number(m_pChannel->midiPort()) + " / "; |
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if (m_pChannel->midiChannel() == LSCP_MIDI_CHANNEL_ALL) |
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sMidiPortChannel += tr("All"); |
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else |
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sMidiPortChannel += QString::number(m_pChannel->midiChannel() + 1); |
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ui.MidiPortChannelTextLabel->setText(sMidiPortChannel); |
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|
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// Common palette... |
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QPalette pal; |
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const QColor& rgbFore = pal.color(QPalette::Foreground); |
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|
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// Instrument status... |
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int iInstrumentStatus = m_pChannel->instrumentStatus(); |
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if (iInstrumentStatus < 0) { |
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pal.setColor(QPalette::Foreground, Qt::red); |
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ui.InstrumentStatusTextLabel->setPalette(pal); |
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ui.InstrumentStatusTextLabel->setText(tr("ERR%1").arg(iInstrumentStatus)); |
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m_iErrorCount++; |
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return false; |
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} |
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// All seems normal... |
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pal.setColor(QPalette::Foreground, |
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iInstrumentStatus < 100 ? Qt::yellow : Qt::green); |
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ui.InstrumentStatusTextLabel->setPalette(pal); |
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ui.InstrumentStatusTextLabel->setText(QString::number(iInstrumentStatus) + '%'); |
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m_iErrorCount = 0; |
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|
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#ifdef CONFIG_MUTE_SOLO |
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// Mute/Solo button state coloring... |
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bool bMute = m_pChannel->channelMute(); |
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const QColor& rgbButton = pal.color(QPalette::Button); |
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pal.setColor(QPalette::Foreground, rgbFore); |
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pal.setColor(QPalette::Button, bMute ? Qt::yellow : rgbButton); |
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ui.ChannelMutePushButton->setPalette(pal); |
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ui.ChannelMutePushButton->setDown(bMute); |
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bool bSolo = m_pChannel->channelSolo(); |
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pal.setColor(QPalette::Button, bSolo ? Qt::cyan : rgbButton); |
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ui.ChannelSoloPushButton->setPalette(pal); |
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ui.ChannelSoloPushButton->setDown(bSolo); |
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#else |
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ui.ChannelMutePushButton->setEnabled(false); |
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ui.ChannelSoloPushButton->setEnabled(false); |
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#endif |
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|
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// And update the both GUI volume elements; |
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// return success if, and only if, intrument is fully loaded... |
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return updateChannelVolume() && (iInstrumentStatus == 100); |
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} |
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|
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|
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// Update whole channel usage state. |
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bool ChannelStrip::updateChannelUsage (void) |
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{ |
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if (m_pChannel == NULL) |
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return false; |
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|
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MainForm *pMainForm = MainForm::getInstance(); |
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if (pMainForm->client() == NULL) |
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return false; |
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|
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// This only makes sense on fully loaded channels... |
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if (m_pChannel->instrumentStatus() < 100) |
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return false; |
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|
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// Get current channel voice count. |
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int iVoiceCount = ::lscp_get_channel_voice_count(pMainForm->client(), m_pChannel->channelID()); |
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// Get current stream count. |
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int iStreamCount = ::lscp_get_channel_stream_count(pMainForm->client(), m_pChannel->channelID()); |
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// Get current channel buffer fill usage. |
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// As benno has suggested this is the percentage usage |
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// of the least filled buffer stream... |
| 437 |
int iStreamUsage = ::lscp_get_channel_stream_usage(pMainForm->client(), m_pChannel->channelID());; |
| 438 |
|
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// Update the GUI elements... |
| 440 |
ui.StreamUsageProgressBar->setValue(iStreamUsage); |
| 441 |
ui.StreamVoiceCountTextLabel->setText(QString("%1 / %2").arg(iStreamCount).arg(iVoiceCount)); |
| 442 |
|
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// We're clean. |
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return true; |
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} |
| 446 |
|
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|
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// Volume change slot. |
| 449 |
void ChannelStrip::volumeChanged ( int iVolume ) |
| 450 |
{ |
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if (m_pChannel == NULL) |
| 452 |
return; |
| 453 |
|
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// Avoid recursion. |
| 455 |
if (m_iDirtyChange > 0) |
| 456 |
return; |
| 457 |
|
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// Convert and clip. |
| 459 |
float fVolume = (float) iVolume / 100.0; |
| 460 |
if (fVolume < 0.001) |
| 461 |
fVolume = 0.0; |
| 462 |
|
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// Update the GUI elements. |
| 464 |
if (m_pChannel->setVolume(fVolume)) { |
| 465 |
updateChannelVolume(); |
| 466 |
emit channelChanged(this); |
| 467 |
} |
| 468 |
} |
| 469 |
|
| 470 |
|
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// Context menu event handler. |
| 472 |
void ChannelStrip::contextMenuEvent( QContextMenuEvent *pEvent ) |
| 473 |
{ |
| 474 |
if (m_pChannel == NULL) |
| 475 |
return; |
| 476 |
|
| 477 |
// We'll just show up the main form's edit menu (thru qsamplerChannel). |
| 478 |
m_pChannel->contextMenuEvent(pEvent); |
| 479 |
} |
| 480 |
|
| 481 |
|
| 482 |
// Error count hackish accessors. |
| 483 |
void ChannelStrip::resetErrorCount (void) |
| 484 |
{ |
| 485 |
m_iErrorCount = 0; |
| 486 |
} |
| 487 |
|
| 488 |
} // namespace QSampler |
| 489 |
|
| 490 |
|
| 491 |
// end of qsamplerChannelStrip.cpp |
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