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