trunk/src/qsamplerChannelStrip.cpp

// qsamplerChannelStrip.cpp
//
/****************************************************************************
   Copyright (C) 2004-2010, rncbc aka Rui Nuno Capela. All rights reserved.
   Copyright (C) 2007, 2008 Christian Schoenebeck

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation; either version 2
   of the License, or (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License along
   with this program; if not, write to the Free Software Foundation, Inc.,
   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

*****************************************************************************/

#include "qsamplerAbout.h"
#include "qsamplerChannelStrip.h"

#include "qsamplerMainForm.h"

#include "qsamplerChannelFxForm.h"

#include <QMessageBox>
#include <QDragEnterEvent>
#include <QFileInfo>
#include <QTimer>
#include <QUrl>


// Channel status/usage usage limit control.
#define QSAMPLER_ERROR_LIMIT    3

// Needed for lroundf()
#include <math.h>

#ifndef CONFIG_ROUND
static inline long lroundf ( float x )
{
        if (x >= 0.0f)
                return long(x + 0.5f);
        else
                return long(x - 0.5f);
}
#endif


namespace QSampler {

//-------------------------------------------------------------------------
// QSampler::ChannelStrip -- Channel strip form implementation.
//

// MIDI activity pixmap common resources.
int      ChannelStrip::g_iMidiActivityRefCount = 0;
QPixmap *ChannelStrip::g_pMidiActivityLedOn    = NULL;
QPixmap *ChannelStrip::g_pMidiActivityLedOff   = NULL;

// Channel strip activation/selection.
ChannelStrip *ChannelStrip::g_pSelectedStrip = NULL;

ChannelStrip::ChannelStrip ( QWidget* pParent, Qt::WindowFlags wflags )
        : QWidget(pParent, wflags)
{
        m_ui.setupUi(this);

        // Initialize locals.
        m_pChannel     = NULL;
        m_iDirtyChange = 0;
        m_iErrorCount  = 0;

        if (++g_iMidiActivityRefCount == 1) {
                g_pMidiActivityLedOn  = new QPixmap(":/images/ledon1.png");
                g_pMidiActivityLedOff = new QPixmap(":/images/ledoff1.png");
        }

        m_ui.MidiActivityLabel->setPixmap(*g_pMidiActivityLedOff);

#ifndef CONFIG_EVENT_CHANNEL_MIDI
        m_ui.MidiActivityLabel->setToolTip("MIDI activity (disabled)");
#endif

        m_pMidiActivityTimer = new QTimer(this);
        m_pMidiActivityTimer->setSingleShot(true);

        QObject::connect(m_pMidiActivityTimer,
                SIGNAL(timeout()),
                SLOT(midiActivityLedOff())
        );

        // Try to restore normal window positioning.
        adjustSize();

        QObject::connect(m_ui.ChannelSetupPushButton,
                SIGNAL(clicked()),
                SLOT(channelSetup()));
        QObject::connect(m_ui.ChannelMutePushButton,
                SIGNAL(toggled(bool)),
                SLOT(channelMute(bool)));
        QObject::connect(m_ui.ChannelSoloPushButton,
                SIGNAL(toggled(bool)),
                SLOT(channelSolo(bool)));
        QObject::connect(m_ui.VolumeSlider,
                SIGNAL(valueChanged(int)),
                SLOT(volumeChanged(int)));
        QObject::connect(m_ui.VolumeSpinBox,
                SIGNAL(valueChanged(int)),
                SLOT(volumeChanged(int)));
        QObject::connect(m_ui.ChannelEditPushButton,
                SIGNAL(clicked()),
                SLOT(channelEdit()));
        QObject::connect(m_ui.FxPushButton,
                SIGNAL(clicked()),
                SLOT(channelFxEdit()));

        setSelected(false);
}


ChannelStrip::~ChannelStrip (void)
{
        setSelected(false);

        // Destroy existing channel descriptor.
        if (m_pChannel)
                delete m_pChannel;
        m_pChannel = NULL;

        if (--g_iMidiActivityRefCount == 0) {
                if (g_pMidiActivityLedOn)
                        delete g_pMidiActivityLedOn;
                g_pMidiActivityLedOn = NULL;
                if (g_pMidiActivityLedOff)
                        delete g_pMidiActivityLedOff;
                g_pMidiActivityLedOff = NULL;
        }
}


// Window drag-n-drop event handlers.
void ChannelStrip::dragEnterEvent ( QDragEnterEvent* pDragEnterEvent )
{
        if (m_pChannel == NULL)
                return;

        bool bAccept = false;

        if (pDragEnterEvent->source() == NULL) {
                const QMimeData *pMimeData = pDragEnterEvent->mimeData();
                if (pMimeData && pMimeData->hasUrls()) {
                        QListIterator<QUrl> iter(pMimeData->urls());
                        while (iter.hasNext()) {
                                const QString& sFilename = iter.next().toLocalFile();
                                if (!sFilename.isEmpty()) {
                                //      bAccept = Channel::isDlsInstrumentFile(sFilename);
                                        bAccept = QFileInfo(sFilename).exists();
                                        break;
                                }
                        }
                }
        }

        if (bAccept)
                pDragEnterEvent->accept();
        else
                pDragEnterEvent->ignore();
}


void ChannelStrip::dropEvent ( QDropEvent* pDropEvent )
{
        if (m_pChannel == NULL)
                return;

        if (pDropEvent->source())
                return;

        const QMimeData *pMimeData = pDropEvent->mimeData();
        if (pMimeData && pMimeData->hasUrls()) {
                QStringList files;
                QListIterator<QUrl> iter(pMimeData->urls());
                while (iter.hasNext()) {
                        const QString& sFilename = iter.next().toLocalFile();
                        if (!sFilename.isEmpty()) {
                                // Go and set the dropped instrument filename...
                                m_pChannel->setInstrument(sFilename, 0);
                                // Open up the channel dialog.
                                channelSetup();
                                break;
                        }
                }
        }
}


// Channel strip setup formal initializer.
void ChannelStrip::setup ( Channel *pChannel )
{
        // Destroy any previous channel descriptor;
        // (remember that once setup we own it!)
        if (m_pChannel)
                delete m_pChannel;

        // Set the new one...
        m_pChannel = pChannel;

        // Stabilize this around.
        updateChannelInfo();

        // We'll accept drops from now on...
        if (m_pChannel)
                setAcceptDrops(true);
}


// Channel secriptor accessor.
Channel *ChannelStrip::channel (void) const
{
        return m_pChannel;
}


// Messages view font accessors.
QFont ChannelStrip::displayFont (void) const
{
        return m_ui.EngineNameTextLabel->font();
}

void ChannelStrip::setDisplayFont ( const QFont & font )
{
        m_ui.EngineNameTextLabel->setFont(font);
        m_ui.MidiPortChannelTextLabel->setFont(font);
        m_ui.InstrumentNameTextLabel->setFont(font);
        m_ui.InstrumentStatusTextLabel->setFont(font);
}


// Channel display background effect.
void ChannelStrip::setDisplayEffect ( bool bDisplayEffect )
{
        QPalette pal;
        pal.setColor(QPalette::Foreground, Qt::yellow);
        m_ui.EngineNameTextLabel->setPalette(pal);
        m_ui.MidiPortChannelTextLabel->setPalette(pal);
        pal.setColor(QPalette::Foreground, Qt::green);
        if (bDisplayEffect) {
                QPixmap pm(":/images/displaybg1.png");
                pal.setBrush(QPalette::Background, QBrush(pm));
        } else {
                pal.setColor(QPalette::Background, Qt::black);
        }
        m_ui.ChannelInfoFrame->setPalette(pal);
        m_ui.InstrumentNameTextLabel->setPalette(pal);
        m_ui.StreamVoiceCountTextLabel->setPalette(pal);
}


// Maximum volume slider accessors.
void ChannelStrip::setMaxVolume ( int iMaxVolume )
{
        m_iDirtyChange++;
        m_ui.VolumeSlider->setRange(0, iMaxVolume);
        m_ui.VolumeSpinBox->setRange(0, iMaxVolume);
        m_iDirtyChange--;
}


// Channel setup dialog slot.
bool ChannelStrip::channelSetup (void)
{
        if (m_pChannel == NULL)
                return false;

        // Invoke the channel setup dialog.
        bool bResult = m_pChannel->channelSetup(this);
        // Notify that this channel has changed.
        if (bResult)
                emit channelChanged(this);

        return bResult;
}


// Channel mute slot.
bool ChannelStrip::channelMute ( bool bMute )
{
        if (m_pChannel == NULL)
                return false;

        // Invoke the channel mute method.
        bool bResult = m_pChannel->setChannelMute(bMute);
        // Notify that this channel has changed.
        if (bResult)
                emit channelChanged(this);

        return bResult;
}


// Channel solo slot.
bool ChannelStrip::channelSolo ( bool bSolo )
{
        if (m_pChannel == NULL)
                return false;

        // Invoke the channel solo method.
        bool bResult = m_pChannel->setChannelSolo(bSolo);
        // Notify that this channel has changed.
        if (bResult)
                emit channelChanged(this);

        return bResult;
}


// Channel edit slot.
void ChannelStrip::channelEdit (void)
{
        if (m_pChannel == NULL)
                return;

        m_pChannel->editChannel();
}

bool ChannelStrip::channelFxEdit (void)
{
        MainForm *pMainForm = MainForm::getInstance();
        if (!pMainForm || !channel())
                return false;

        pMainForm->appendMessages(QObject::tr("channel fx sends..."));

        bool bResult = false;

#if CONFIG_FXSEND
        ChannelFxForm *pChannelFxForm =
                new ChannelFxForm(channel(), parentWidget());
        if (pChannelFxForm) {
                //pChannelForm->setup(this);
                bResult = pChannelFxForm->exec();
                delete pChannelFxForm;
        }
#else // CONFIG_FXSEND
        QMessageBox::critical(this,
                QSAMPLER_TITLE ": " + tr("Unavailable"),
                        tr("Sorry, QSampler was built without FX send support!\n\n"
                           "(Make sure you have a recent liblscp when recompiling QSampler)"));
#endif // CONFIG_FXSEND

        return bResult;
}

// Channel reset slot.
bool ChannelStrip::channelReset (void)
{
        if (m_pChannel == NULL)
                return false;

        // Invoke the channel reset method.
        bool bResult = m_pChannel->channelReset();
        // Notify that this channel has changed.
        if (bResult)
                emit channelChanged(this);

        return bResult;
}


// Update the channel instrument name.
bool ChannelStrip::updateInstrumentName ( bool bForce )
{
        if (m_pChannel == NULL)
                return false;

        // Do we refresh the actual name?
        if (bForce)
                m_pChannel->updateInstrumentName();

        // Instrument name...
        if (m_pChannel->instrumentName().isEmpty()) {
                if (m_pChannel->instrumentStatus() >= 0) {
                        m_ui.InstrumentNameTextLabel->setText(
                                ' ' + Channel::loadingInstrument());
                } else {
                        m_ui.InstrumentNameTextLabel->setText(
                                ' ' + Channel::noInstrumentName());
                }
        } else {
                m_ui.InstrumentNameTextLabel->setText(
                        ' ' + m_pChannel->instrumentName());
        }

        return true;
}


// Do the dirty volume change.
bool ChannelStrip::updateChannelVolume (void)
{
        if (m_pChannel == NULL)
                return false;

        // Convert...
        int iVolume = ::lroundf(100.0f * m_pChannel->volume());
        // And clip...
        if (iVolume < 0)
                iVolume = 0;

        // Flag it here, to avoid infinite recursion.
        m_iDirtyChange++;
        m_ui.VolumeSlider->setValue(iVolume);
        m_ui.VolumeSpinBox->setValue(iVolume);
        m_iDirtyChange--;

        return true;
}


// Update whole channel info state.
bool ChannelStrip::updateChannelInfo (void)
{
        if (m_pChannel == NULL)
                return false;

        // Check for error limit/recycle...
        if (m_iErrorCount > QSAMPLER_ERROR_LIMIT)
                return true;

        // Update strip caption.
        QString sText = m_pChannel->channelName();
        setWindowTitle(sText);
        m_ui.ChannelSetupPushButton->setText('&' + sText);

        // Check if we're up and connected.
        MainForm* pMainForm = MainForm::getInstance();
        if (pMainForm->client() == NULL)
                return false;

        // Read actual channel information.
        m_pChannel->updateChannelInfo();

        // Engine name...
        if (m_pChannel->engineName().isEmpty()) {
                m_ui.EngineNameTextLabel->setText(
                        ' ' + Channel::noEngineName());
        } else {
                m_ui.EngineNameTextLabel->setText(
                        ' ' + m_pChannel->engineName());
        }

        // Instrument name...
        updateInstrumentName(false);

        // MIDI Port/Channel...
        QString sMidiPortChannel = QString::number(m_pChannel->midiPort()) + " / ";
        if (m_pChannel->midiChannel() == LSCP_MIDI_CHANNEL_ALL)
                sMidiPortChannel += tr("All");
        else
                sMidiPortChannel += QString::number(m_pChannel->midiChannel() + 1);
        m_ui.MidiPortChannelTextLabel->setText(sMidiPortChannel);

        // Common palette...
        QPalette pal;
        const QColor& rgbFore = pal.color(QPalette::Foreground);

        // Instrument status...
        int iInstrumentStatus = m_pChannel->instrumentStatus();
        if (iInstrumentStatus < 0) {
                pal.setColor(QPalette::Foreground, Qt::red);
                m_ui.InstrumentStatusTextLabel->setPalette(pal);
                m_ui.InstrumentStatusTextLabel->setText(
                        tr("ERR%1").arg(iInstrumentStatus));
                m_iErrorCount++;
                return false;
        }
        // All seems normal...
        pal.setColor(QPalette::Foreground,
                iInstrumentStatus < 100 ? Qt::yellow : Qt::green);
        m_ui.InstrumentStatusTextLabel->setPalette(pal);
        m_ui.InstrumentStatusTextLabel->setText(
                QString::number(iInstrumentStatus) + '%');
        m_iErrorCount = 0;

#ifdef CONFIG_MUTE_SOLO
        // Mute/Solo button state coloring...
        bool bMute = m_pChannel->channelMute();
        const QColor& rgbButton = pal.color(QPalette::Button);
        const QColor& rgbButtonText = pal.color(QPalette::ButtonText);
        pal.setColor(QPalette::Foreground, rgbFore);
        pal.setColor(QPalette::Button, bMute ? Qt::yellow : rgbButton);
        pal.setColor(QPalette::ButtonText, bMute ? Qt::darkYellow : rgbButtonText);
        m_ui.ChannelMutePushButton->setPalette(pal);
        m_ui.ChannelMutePushButton->setDown(bMute);
        bool bSolo = m_pChannel->channelSolo();
        pal.setColor(QPalette::Button, bSolo ? Qt::cyan : rgbButton);   
        pal.setColor(QPalette::ButtonText, bSolo ? Qt::darkCyan : rgbButtonText);
        m_ui.ChannelSoloPushButton->setPalette(pal);
        m_ui.ChannelSoloPushButton->setDown(bSolo);
#else
        m_ui.ChannelMutePushButton->setEnabled(false);
        m_ui.ChannelSoloPushButton->setEnabled(false);
#endif

        // And update the both GUI volume elements;
        // return success if, and only if, intrument is fully loaded...
        return updateChannelVolume() && (iInstrumentStatus == 100);
}


// Update whole channel usage state.
bool ChannelStrip::updateChannelUsage (void)
{
        if (m_pChannel == NULL)
                return false;

        MainForm *pMainForm = MainForm::getInstance();
        if (pMainForm->client() == NULL)
                return false;

        // This only makes sense on fully loaded channels...
        if (m_pChannel->instrumentStatus() < 100)
                return false;

        // Get current channel voice count.
        int iVoiceCount  = ::lscp_get_channel_voice_count(
                pMainForm->client(), m_pChannel->channelID());
// Get current stream count.
        int iStreamCount = ::lscp_get_channel_stream_count(
                pMainForm->client(), m_pChannel->channelID());
        // Get current channel buffer fill usage.
        // As benno has suggested this is the percentage usage
        // of the least filled buffer stream...
        int iStreamUsage = ::lscp_get_channel_stream_usage(
                pMainForm->client(), m_pChannel->channelID());;

        // Update the GUI elements...
        m_ui.StreamUsageProgressBar->setValue(iStreamUsage);
        m_ui.StreamVoiceCountTextLabel->setText(
                QString("%1 / %2").arg(iStreamCount).arg(iVoiceCount));

        // We're clean.
        return true;
}


// Volume change slot.
void ChannelStrip::volumeChanged ( int iVolume )
{
        if (m_pChannel == NULL)
                return;

        // Avoid recursion.
        if (m_iDirtyChange > 0)
                return;

        // Convert and clip.
        float fVolume = (float) iVolume / 100.0f;
        if (fVolume < 0.001f)
                fVolume = 0.0f;

        // Update the GUI elements.
        if (m_pChannel->setVolume(fVolume)) {
                updateChannelVolume();
                emit channelChanged(this);
        }
}


// Context menu event handler.
void ChannelStrip::contextMenuEvent( QContextMenuEvent *pEvent )
{
        if (m_pChannel == NULL)
                return;

        // We'll just show up the main form's edit menu (thru qsamplerChannel).
        m_pChannel->contextMenuEvent(pEvent);
}


void ChannelStrip::midiActivityLedOn (void)
{
        m_ui.MidiActivityLabel->setPixmap(*g_pMidiActivityLedOn);
        m_pMidiActivityTimer->start(100);
}


void ChannelStrip::midiActivityLedOff (void)
{
        m_ui.MidiActivityLabel->setPixmap(*g_pMidiActivityLedOff);
}


// Error count hackish accessors.
void ChannelStrip::resetErrorCount (void)
{
        m_iErrorCount = 0;
}


// Channel strip activation/selection.
void ChannelStrip::setSelected ( bool bSelected )
{
        if (bSelected) {
                if (g_pSelectedStrip == this)
                        return;
                if (g_pSelectedStrip)
                        g_pSelectedStrip->setSelected(false);
                g_pSelectedStrip = this;
        } else {
                if (g_pSelectedStrip == this)
                        g_pSelectedStrip = NULL;
        }

        QPalette pal;
        if (bSelected) {
                const QColor& color = pal.midlight().color();
                pal.setColor(QPalette::Background, color.dark(150));
                pal.setColor(QPalette::Foreground, color.light(150));
        }
        QWidget::setPalette(pal);
}


bool ChannelStrip::isSelected (void) const
{
        return (this == g_pSelectedStrip);
}


} // namespace QSampler


// end of qsamplerChannelStrip.cpp
1	capela	1464	// qsamplerChannelStrip.cpp
2			//
3			/****************************************************************************
4	capela	2036	Copyright (C) 2004-2010, rncbc aka Rui Nuno Capela. All rights reserved.
5	schoenebeck	1667	Copyright (C) 2007, 2008 Christian Schoenebeck
6	capela	1464
7			This program is free software; you can redistribute it and/or
8			modify it under the terms of the GNU General Public License
9			as published by the Free Software Foundation; either version 2
10			of the License, or (at your option) any later version.
11
12			This program is distributed in the hope that it will be useful,
13			but WITHOUT ANY WARRANTY; without even the implied warranty of
14			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			GNU General Public License for more details.
16
17			You should have received a copy of the GNU General Public License along
18			with this program; if not, write to the Free Software Foundation, Inc.,
19			51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20
21			*****************************************************************************/
22
23	capela	1499	#include "qsamplerAbout.h"
24	schoenebeck	1461	#include "qsamplerChannelStrip.h"
25
26			#include "qsamplerMainForm.h"
27
28	schoenebeck	1667	#include "qsamplerChannelFxForm.h"
29
30			#include <QMessageBox>
31	capela	1499	#include <QDragEnterEvent>
32	capela	2108	#include <QFileInfo>
33	capela	2036	#include <QTimer>
34	schoenebeck	1461	#include <QUrl>
35
36	schoenebeck	1691
37	schoenebeck	1461	// Channel status/usage usage limit control.
38			#define QSAMPLER_ERROR_LIMIT 3
39
40	capela	1510	// Needed for lroundf()
41			#include <math.h>
42
43			#ifndef CONFIG_ROUND
44			static inline long lroundf ( float x )
45			{
46			if (x >= 0.0f)
47			return long(x + 0.5f);
48			else
49			return long(x - 0.5f);
50			}
51			#endif
52
53	capela	1514
54			namespace QSampler {
55
56	capela	1558	//-------------------------------------------------------------------------
57			// QSampler::ChannelStrip -- Channel strip form implementation.
58			//
59
60	capela	2036	// MIDI activity pixmap common resources.
61			int ChannelStrip::g_iMidiActivityRefCount = 0;
62			QPixmap *ChannelStrip::g_pMidiActivityLedOn = NULL;
63			QPixmap *ChannelStrip::g_pMidiActivityLedOff = NULL;
64
65	capela	1514	// Channel strip activation/selection.
66			ChannelStrip *ChannelStrip::g_pSelectedStrip = NULL;
67
68	capela	1509	ChannelStrip::ChannelStrip ( QWidget* pParent, Qt::WindowFlags wflags )
69			: QWidget(pParent, wflags)
70			{
71	capela	1510	m_ui.setupUi(this);
72	schoenebeck	1461
73	capela	1510	// Initialize locals.
74			m_pChannel = NULL;
75			m_iDirtyChange = 0;
76			m_iErrorCount = 0;
77	schoenebeck	1461
78	capela	2036	if (++g_iMidiActivityRefCount == 1) {
79	capela	2074	g_pMidiActivityLedOn = new QPixmap(":/images/ledon1.png");
80			g_pMidiActivityLedOff = new QPixmap(":/images/ledoff1.png");
81	capela	2036	}
82
83			m_ui.MidiActivityLabel->setPixmap(*g_pMidiActivityLedOff);
84
85			#ifndef CONFIG_EVENT_CHANNEL_MIDI
86			m_ui.MidiActivityLabel->setToolTip("MIDI activity (disabled)");
87			#endif
88
89			m_pMidiActivityTimer = new QTimer(this);
90			m_pMidiActivityTimer->setSingleShot(true);
91
92			QObject::connect(m_pMidiActivityTimer,
93			SIGNAL(timeout()),
94			SLOT(midiActivityLedOff())
95			);
96
97	capela	1510	// Try to restore normal window positioning.
98			adjustSize();
99	capela	1466
100	capela	1509	QObject::connect(m_ui.ChannelSetupPushButton,
101	capela	1466	SIGNAL(clicked()),
102			SLOT(channelSetup()));
103	capela	1509	QObject::connect(m_ui.ChannelMutePushButton,
104	capela	1466	SIGNAL(toggled(bool)),
105			SLOT(channelMute(bool)));
106	capela	1509	QObject::connect(m_ui.ChannelSoloPushButton,
107	capela	1466	SIGNAL(toggled(bool)),
108			SLOT(channelSolo(bool)));
109	capela	1509	QObject::connect(m_ui.VolumeSlider,
110	capela	1466	SIGNAL(valueChanged(int)),
111			SLOT(volumeChanged(int)));
112	capela	1509	QObject::connect(m_ui.VolumeSpinBox,
113	capela	1466	SIGNAL(valueChanged(int)),
114			SLOT(volumeChanged(int)));
115	capela	1509	QObject::connect(m_ui.ChannelEditPushButton,
116	capela	1466	SIGNAL(clicked()),
117			SLOT(channelEdit()));
118	schoenebeck	1667	QObject::connect(m_ui.FxPushButton,
119			SIGNAL(clicked()),
120			SLOT(channelFxEdit()));
121	capela	1515
122			setSelected(false);
123	schoenebeck	1461	}
124
125	capela	1513
126			ChannelStrip::~ChannelStrip (void)
127			{
128	capela	1515	setSelected(false);
129
130	capela	1510	// Destroy existing channel descriptor.
131			if (m_pChannel)
132			delete m_pChannel;
133			m_pChannel = NULL;
134	capela	2036
135			if (--g_iMidiActivityRefCount == 0) {
136			if (g_pMidiActivityLedOn)
137			delete g_pMidiActivityLedOn;
138			g_pMidiActivityLedOn = NULL;
139			if (g_pMidiActivityLedOff)
140			delete g_pMidiActivityLedOff;
141			g_pMidiActivityLedOff = NULL;
142			}
143	schoenebeck	1461	}
144
145
146	capela	1499	// Window drag-n-drop event handlers.
147			void ChannelStrip::dragEnterEvent ( QDragEnterEvent* pDragEnterEvent )
148	schoenebeck	1461	{
149			if (m_pChannel == NULL)
150	capela	1499	return;
151
152			bool bAccept = false;
153
154			if (pDragEnterEvent->source() == NULL) {
155			const QMimeData *pMimeData = pDragEnterEvent->mimeData();
156			if (pMimeData && pMimeData->hasUrls()) {
157			QListIterator<QUrl> iter(pMimeData->urls());
158			while (iter.hasNext()) {
159			const QString& sFilename = iter.next().toLocalFile();
160			if (!sFilename.isEmpty()) {
161	capela	2108	// bAccept = Channel::isDlsInstrumentFile(sFilename);
162			bAccept = QFileInfo(sFilename).exists();
163	capela	1499	break;
164	schoenebeck	1461	}
165			}
166			}
167			}
168
169	capela	1499	if (bAccept)
170			pDragEnterEvent->accept();
171			else
172			pDragEnterEvent->ignore();
173	schoenebeck	1461	}
174
175
176			void ChannelStrip::dropEvent ( QDropEvent* pDropEvent )
177			{
178	capela	1499	if (m_pChannel == NULL)
179			return;
180	schoenebeck	1461
181	capela	1499	if (pDropEvent->source())
182			return;
183
184			const QMimeData *pMimeData = pDropEvent->mimeData();
185			if (pMimeData && pMimeData->hasUrls()) {
186			QStringList files;
187			QListIterator<QUrl> iter(pMimeData->urls());
188			while (iter.hasNext()) {
189			const QString& sFilename = iter.next().toLocalFile();
190			if (!sFilename.isEmpty()) {
191			// Go and set the dropped instrument filename...
192			m_pChannel->setInstrument(sFilename, 0);
193			// Open up the channel dialog.
194			channelSetup();
195			break;
196			}
197			}
198	schoenebeck	1461	}
199			}
200
201
202			// Channel strip setup formal initializer.
203	capela	1558	void ChannelStrip::setup ( Channel *pChannel )
204	schoenebeck	1461	{
205	capela	1510	// Destroy any previous channel descriptor;
206			// (remember that once setup we own it!)
207			if (m_pChannel)
208			delete m_pChannel;
209	schoenebeck	1461
210	capela	1510	// Set the new one...
211			m_pChannel = pChannel;
212	schoenebeck	1461
213	capela	1510	// Stabilize this around.
214			updateChannelInfo();
215	schoenebeck	1461
216			// We'll accept drops from now on...
217			if (m_pChannel)
218			setAcceptDrops(true);
219			}
220
221	capela	1513
222	schoenebeck	1461	// Channel secriptor accessor.
223	capela	1558	Channel *ChannelStrip::channel (void) const
224	schoenebeck	1461	{
225	capela	1510	return m_pChannel;
226	schoenebeck	1461	}
227
228
229			// Messages view font accessors.
230	capela	1509	QFont ChannelStrip::displayFont (void) const
231	schoenebeck	1461	{
232	capela	1510	return m_ui.EngineNameTextLabel->font();
233	schoenebeck	1461	}
234
235			void ChannelStrip::setDisplayFont ( const QFont & font )
236			{
237	capela	1510	m_ui.EngineNameTextLabel->setFont(font);
238			m_ui.MidiPortChannelTextLabel->setFont(font);
239			m_ui.InstrumentNameTextLabel->setFont(font);
240			m_ui.InstrumentStatusTextLabel->setFont(font);
241	schoenebeck	1461	}
242
243
244			// Channel display background effect.
245			void ChannelStrip::setDisplayEffect ( bool bDisplayEffect )
246			{
247	capela	1499	QPalette pal;
248	capela	1507	pal.setColor(QPalette::Foreground, Qt::yellow);
249	capela	1509	m_ui.EngineNameTextLabel->setPalette(pal);
250			m_ui.MidiPortChannelTextLabel->setPalette(pal);
251	capela	1499	pal.setColor(QPalette::Foreground, Qt::green);
252			if (bDisplayEffect) {
253	capela	2074	QPixmap pm(":/images/displaybg1.png");
254	capela	1499	pal.setBrush(QPalette::Background, QBrush(pm));
255			} else {
256			pal.setColor(QPalette::Background, Qt::black);
257			}
258	capela	1509	m_ui.ChannelInfoFrame->setPalette(pal);
259	capela	1637	m_ui.InstrumentNameTextLabel->setPalette(pal);
260	capela	1509	m_ui.StreamVoiceCountTextLabel->setPalette(pal);
261	schoenebeck	1461	}
262
263
264			// Maximum volume slider accessors.
265			void ChannelStrip::setMaxVolume ( int iMaxVolume )
266			{
267	capela	1510	m_iDirtyChange++;
268			m_ui.VolumeSlider->setRange(0, iMaxVolume);
269			m_ui.VolumeSpinBox->setRange(0, iMaxVolume);
270			m_iDirtyChange--;
271	schoenebeck	1461	}
272
273
274			// Channel setup dialog slot.
275			bool ChannelStrip::channelSetup (void)
276			{
277			if (m_pChannel == NULL)
278			return false;
279
280			// Invoke the channel setup dialog.
281			bool bResult = m_pChannel->channelSetup(this);
282			// Notify that this channel has changed.
283			if (bResult)
284			emit channelChanged(this);
285
286			return bResult;
287			}
288
289
290			// Channel mute slot.
291			bool ChannelStrip::channelMute ( bool bMute )
292			{
293			if (m_pChannel == NULL)
294			return false;
295
296			// Invoke the channel mute method.
297			bool bResult = m_pChannel->setChannelMute(bMute);
298			// Notify that this channel has changed.
299			if (bResult)
300			emit channelChanged(this);
301
302			return bResult;
303			}
304
305
306			// Channel solo slot.
307			bool ChannelStrip::channelSolo ( bool bSolo )
308			{
309			if (m_pChannel == NULL)
310			return false;
311
312			// Invoke the channel solo method.
313			bool bResult = m_pChannel->setChannelSolo(bSolo);
314			// Notify that this channel has changed.
315			if (bResult)
316			emit channelChanged(this);
317
318			return bResult;
319			}
320
321
322			// Channel edit slot.
323			void ChannelStrip::channelEdit (void)
324			{
325			if (m_pChannel == NULL)
326			return;
327
328			m_pChannel->editChannel();
329			}
330
331	schoenebeck	1667	bool ChannelStrip::channelFxEdit (void)
332			{
333			MainForm *pMainForm = MainForm::getInstance();
334			if (!pMainForm \|\| !channel())
335			return false;
336	schoenebeck	1461
337	schoenebeck	1667	pMainForm->appendMessages(QObject::tr("channel fx sends..."));
338
339			bool bResult = false;
340
341			#if CONFIG_FXSEND
342			ChannelFxForm *pChannelFxForm =
343	schoenebeck	1668	new ChannelFxForm(channel(), parentWidget());
344	schoenebeck	1667	if (pChannelFxForm) {
345			//pChannelForm->setup(this);
346			bResult = pChannelFxForm->exec();
347			delete pChannelFxForm;
348			}
349			#else // CONFIG_FXSEND
350			QMessageBox::critical(this,
351			QSAMPLER_TITLE ": " + tr("Unavailable"),
352			tr("Sorry, QSampler was built without FX send support!\n\n"
353			"(Make sure you have a recent liblscp when recompiling QSampler)"));
354			#endif // CONFIG_FXSEND
355
356			return bResult;
357			}
358
359	schoenebeck	1461	// Channel reset slot.
360			bool ChannelStrip::channelReset (void)
361			{
362			if (m_pChannel == NULL)
363			return false;
364
365			// Invoke the channel reset method.
366			bool bResult = m_pChannel->channelReset();
367			// Notify that this channel has changed.
368			if (bResult)
369			emit channelChanged(this);
370
371			return bResult;
372			}
373
374
375			// Update the channel instrument name.
376			bool ChannelStrip::updateInstrumentName ( bool bForce )
377			{
378			if (m_pChannel == NULL)
379			return false;
380
381			// Do we refresh the actual name?
382			if (bForce)
383			m_pChannel->updateInstrumentName();
384
385			// Instrument name...
386			if (m_pChannel->instrumentName().isEmpty()) {
387	capela	1513	if (m_pChannel->instrumentStatus() >= 0) {
388			m_ui.InstrumentNameTextLabel->setText(
389	capela	1558	' ' + Channel::loadingInstrument());
390	capela	1513	} else {
391			m_ui.InstrumentNameTextLabel->setText(
392	capela	1558	' ' + Channel::noInstrumentName());
393	capela	1513	}
394			} else {
395			m_ui.InstrumentNameTextLabel->setText(
396			' ' + m_pChannel->instrumentName());
397			}
398	schoenebeck	1461
399			return true;
400			}
401
402
403			// Do the dirty volume change.
404			bool ChannelStrip::updateChannelVolume (void)
405			{
406	capela	1510	if (m_pChannel == NULL)
407			return false;
408	schoenebeck	1461
409	capela	1510	// Convert...
410			int iVolume = ::lroundf(100.0f * m_pChannel->volume());
411			// And clip...
412			if (iVolume < 0)
413			iVolume = 0;
414	schoenebeck	1461
415	capela	1510	// Flag it here, to avoid infinite recursion.
416			m_iDirtyChange++;
417			m_ui.VolumeSlider->setValue(iVolume);
418			m_ui.VolumeSpinBox->setValue(iVolume);
419			m_iDirtyChange--;
420	schoenebeck	1461
421	capela	1510	return true;
422	schoenebeck	1461	}
423
424
425			// Update whole channel info state.
426			bool ChannelStrip::updateChannelInfo (void)
427			{
428	capela	1510	if (m_pChannel == NULL)
429			return false;
430	schoenebeck	1461
431			// Check for error limit/recycle...
432			if (m_iErrorCount > QSAMPLER_ERROR_LIMIT)
433			return true;
434
435	capela	1510	// Update strip caption.
436			QString sText = m_pChannel->channelName();
437			setWindowTitle(sText);
438	capela	1513	m_ui.ChannelSetupPushButton->setText('&' + sText);
439	schoenebeck	1461
440	capela	1510	// Check if we're up and connected.
441	schoenebeck	1461	MainForm* pMainForm = MainForm::getInstance();
442			if (pMainForm->client() == NULL)
443			return false;
444
445	capela	1510	// Read actual channel information.
446			m_pChannel->updateChannelInfo();
447	schoenebeck	1461
448	capela	1510	// Engine name...
449	capela	1513	if (m_pChannel->engineName().isEmpty()) {
450			m_ui.EngineNameTextLabel->setText(
451	capela	1558	' ' + Channel::noEngineName());
452	capela	1513	} else {
453			m_ui.EngineNameTextLabel->setText(
454			' ' + m_pChannel->engineName());
455			}
456	schoenebeck	1461
457			// Instrument name...
458			updateInstrumentName(false);
459
460	capela	1510	// MIDI Port/Channel...
461	schoenebeck	1461	QString sMidiPortChannel = QString::number(m_pChannel->midiPort()) + " / ";
462			if (m_pChannel->midiChannel() == LSCP_MIDI_CHANNEL_ALL)
463			sMidiPortChannel += tr("All");
464			else
465			sMidiPortChannel += QString::number(m_pChannel->midiChannel() + 1);
466	capela	1509	m_ui.MidiPortChannelTextLabel->setText(sMidiPortChannel);
467	schoenebeck	1461
468	capela	1499	// Common palette...
469			QPalette pal;
470			const QColor& rgbFore = pal.color(QPalette::Foreground);
471
472	capela	1510	// Instrument status...
473			int iInstrumentStatus = m_pChannel->instrumentStatus();
474			if (iInstrumentStatus < 0) {
475	capela	1499	pal.setColor(QPalette::Foreground, Qt::red);
476	capela	1509	m_ui.InstrumentStatusTextLabel->setPalette(pal);
477	capela	1513	m_ui.InstrumentStatusTextLabel->setText(
478			tr("ERR%1").arg(iInstrumentStatus));
479	capela	1510	m_iErrorCount++;
480			return false;
481			}
482			// All seems normal...
483	capela	1499	pal.setColor(QPalette::Foreground,
484			iInstrumentStatus < 100 ? Qt::yellow : Qt::green);
485	capela	1510	m_ui.InstrumentStatusTextLabel->setPalette(pal);
486	capela	1513	m_ui.InstrumentStatusTextLabel->setText(
487			QString::number(iInstrumentStatus) + '%');
488	capela	1510	m_iErrorCount = 0;
489	schoenebeck	1461
490			#ifdef CONFIG_MUTE_SOLO
491	capela	1510	// Mute/Solo button state coloring...
492			bool bMute = m_pChannel->channelMute();
493	capela	1499	const QColor& rgbButton = pal.color(QPalette::Button);
494	capela	2068	const QColor& rgbButtonText = pal.color(QPalette::ButtonText);
495	capela	1499	pal.setColor(QPalette::Foreground, rgbFore);
496			pal.setColor(QPalette::Button, bMute ? Qt::yellow : rgbButton);
497	capela	2068	pal.setColor(QPalette::ButtonText, bMute ? Qt::darkYellow : rgbButtonText);
498	capela	1509	m_ui.ChannelMutePushButton->setPalette(pal);
499			m_ui.ChannelMutePushButton->setDown(bMute);
500	capela	1510	bool bSolo = m_pChannel->channelSolo();
501	capela	1499	pal.setColor(QPalette::Button, bSolo ? Qt::cyan : rgbButton);
502	capela	2068	pal.setColor(QPalette::ButtonText, bSolo ? Qt::darkCyan : rgbButtonText);
503	capela	1509	m_ui.ChannelSoloPushButton->setPalette(pal);
504			m_ui.ChannelSoloPushButton->setDown(bSolo);
505	schoenebeck	1461	#else
506	capela	1509	m_ui.ChannelMutePushButton->setEnabled(false);
507			m_ui.ChannelSoloPushButton->setEnabled(false);
508	schoenebeck	1461	#endif
509
510	capela	1510	// And update the both GUI volume elements;
511			// return success if, and only if, intrument is fully loaded...
512			return updateChannelVolume() && (iInstrumentStatus == 100);
513	schoenebeck	1461	}
514
515
516			// Update whole channel usage state.
517			bool ChannelStrip::updateChannelUsage (void)
518			{
519	capela	1510	if (m_pChannel == NULL)
520			return false;
521	schoenebeck	1461
522			MainForm *pMainForm = MainForm::getInstance();
523			if (pMainForm->client() == NULL)
524			return false;
525
526			// This only makes sense on fully loaded channels...
527			if (m_pChannel->instrumentStatus() < 100)
528	capela	1510	return false;
529	schoenebeck	1461
530	capela	1510	// Get current channel voice count.
531	capela	1513	int iVoiceCount = ::lscp_get_channel_voice_count(
532			pMainForm->client(), m_pChannel->channelID());
533	capela	1510	// Get current stream count.
534	capela	1513	int iStreamCount = ::lscp_get_channel_stream_count(
535			pMainForm->client(), m_pChannel->channelID());
536	capela	1510	// Get current channel buffer fill usage.
537			// As benno has suggested this is the percentage usage
538			// of the least filled buffer stream...
539	capela	1513	int iStreamUsage = ::lscp_get_channel_stream_usage(
540			pMainForm->client(), m_pChannel->channelID());;
541	schoenebeck	1461
542	capela	1510	// Update the GUI elements...
543			m_ui.StreamUsageProgressBar->setValue(iStreamUsage);
544	capela	1513	m_ui.StreamVoiceCountTextLabel->setText(
545			QString("%1 / %2").arg(iStreamCount).arg(iVoiceCount));
546	schoenebeck	1461
547	capela	1510	// We're clean.
548			return true;
549	schoenebeck	1461	}
550
551
552			// Volume change slot.
553			void ChannelStrip::volumeChanged ( int iVolume )
554			{
555	capela	1510	if (m_pChannel == NULL)
556			return;
557	schoenebeck	1461
558	capela	1510	// Avoid recursion.
559			if (m_iDirtyChange > 0)
560			return;
561	schoenebeck	1461
562	capela	1510	// Convert and clip.
563			float fVolume = (float) iVolume / 100.0f;
564			if (fVolume < 0.001f)
565			fVolume = 0.0f;
566	schoenebeck	1461
567	capela	1510	// Update the GUI elements.
568			if (m_pChannel->setVolume(fVolume)) {
569			updateChannelVolume();
570			emit channelChanged(this);
571			}
572	schoenebeck	1461	}
573
574
575			// Context menu event handler.
576			void ChannelStrip::contextMenuEvent( QContextMenuEvent *pEvent )
577			{
578	capela	1510	if (m_pChannel == NULL)
579			return;
580	schoenebeck	1461
581	capela	1510	// We'll just show up the main form's edit menu (thru qsamplerChannel).
582			m_pChannel->contextMenuEvent(pEvent);
583	schoenebeck	1461	}
584
585	capela	2036
586			void ChannelStrip::midiActivityLedOn (void)
587			{
588			m_ui.MidiActivityLabel->setPixmap(*g_pMidiActivityLedOn);
589	capela	2038	m_pMidiActivityTimer->start(100);
590	schoenebeck	1691	}
591	schoenebeck	1461
592	capela	2036
593			void ChannelStrip::midiActivityLedOff (void)
594			{
595			m_ui.MidiActivityLabel->setPixmap(*g_pMidiActivityLedOff);
596			}
597
598
599	schoenebeck	1461	// Error count hackish accessors.
600			void ChannelStrip::resetErrorCount (void)
601			{
602			m_iErrorCount = 0;
603			}
604
605	capela	1514
606			// Channel strip activation/selection.
607			void ChannelStrip::setSelected ( bool bSelected )
608			{
609			if (bSelected) {
610			if (g_pSelectedStrip == this)
611			return;
612			if (g_pSelectedStrip)
613			g_pSelectedStrip->setSelected(false);
614			g_pSelectedStrip = this;
615			} else {
616			if (g_pSelectedStrip == this)
617			g_pSelectedStrip = NULL;
618			}
619
620			QPalette pal;
621			if (bSelected) {
622			const QColor& color = pal.midlight().color();
623			pal.setColor(QPalette::Background, color.dark(150));
624			pal.setColor(QPalette::Foreground, color.light(150));
625			}
626			QWidget::setPalette(pal);
627			}
628
629
630			bool ChannelStrip::isSelected (void) const
631			{
632			return (this == g_pSelectedStrip);
633			}
634
635
636	schoenebeck	1461	} // namespace QSampler
637	capela	1464
638
639			// end of qsamplerChannelStrip.cpp