trunk/src/qsamplerChannelStrip.cpp

// qsamplerChannelStrip.cpp
//
/****************************************************************************
   Copyright (C) 2004-2007, rncbc aka Rui Nuno Capela. All rights reserved.
   Copyright (C) 2007, 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 <QDragEnterEvent>
#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 {

// 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;

        // 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()));

        setSelected(false);
}


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

        // Destroy existing channel descriptor.
        if (m_pChannel)
                delete m_pChannel;
        m_pChannel = 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 = qsamplerChannel::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 ( qsamplerChannel *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.
qsamplerChannel *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.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();
}


// 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(
                                ' ' + qsamplerChannel::loadingInstrument());
                } else {
                        m_ui.InstrumentNameTextLabel->setText(
                                ' ' + qsamplerChannel::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(
                        ' ' + qsamplerChannel::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);
}


// 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			Copyright (C) 2004-2007, rncbc aka Rui Nuno Capela. All rights reserved.
5			Copyright (C) 2007, Christian Schoenebeck
6
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	capela	1499	#include <QDragEnterEvent>
29	schoenebeck	1461	#include <QUrl>
30
31			// Channel status/usage usage limit control.
32			#define QSAMPLER_ERROR_LIMIT 3
33
34	capela	1510	// Needed for lroundf()
35			#include <math.h>
36
37			#ifndef CONFIG_ROUND
38			static inline long lroundf ( float x )
39			{
40			if (x >= 0.0f)
41			return long(x + 0.5f);
42			else
43			return long(x - 0.5f);
44			}
45			#endif
46
47	capela	1514
48			namespace QSampler {
49
50			// Channel strip activation/selection.
51			ChannelStrip *ChannelStrip::g_pSelectedStrip = NULL;
52
53
54	capela	1509	ChannelStrip::ChannelStrip ( QWidget* pParent, Qt::WindowFlags wflags )
55			: QWidget(pParent, wflags)
56			{
57	capela	1510	m_ui.setupUi(this);
58	schoenebeck	1461
59	capela	1510	// Initialize locals.
60			m_pChannel = NULL;
61			m_iDirtyChange = 0;
62			m_iErrorCount = 0;
63	schoenebeck	1461
64	capela	1510	// Try to restore normal window positioning.
65			adjustSize();
66	capela	1466
67	capela	1509	QObject::connect(m_ui.ChannelSetupPushButton,
68	capela	1466	SIGNAL(clicked()),
69			SLOT(channelSetup()));
70	capela	1509	QObject::connect(m_ui.ChannelMutePushButton,
71	capela	1466	SIGNAL(toggled(bool)),
72			SLOT(channelMute(bool)));
73	capela	1509	QObject::connect(m_ui.ChannelSoloPushButton,
74	capela	1466	SIGNAL(toggled(bool)),
75			SLOT(channelSolo(bool)));
76	capela	1509	QObject::connect(m_ui.VolumeSlider,
77	capela	1466	SIGNAL(valueChanged(int)),
78			SLOT(volumeChanged(int)));
79	capela	1509	QObject::connect(m_ui.VolumeSpinBox,
80	capela	1466	SIGNAL(valueChanged(int)),
81			SLOT(volumeChanged(int)));
82	capela	1509	QObject::connect(m_ui.ChannelEditPushButton,
83	capela	1466	SIGNAL(clicked()),
84			SLOT(channelEdit()));
85	capela	1515
86			setSelected(false);
87	schoenebeck	1461	}
88
89	capela	1513
90			ChannelStrip::~ChannelStrip (void)
91			{
92	capela	1515	setSelected(false);
93
94	capela	1510	// Destroy existing channel descriptor.
95			if (m_pChannel)
96			delete m_pChannel;
97			m_pChannel = NULL;
98	schoenebeck	1461	}
99
100
101	capela	1499	// Window drag-n-drop event handlers.
102			void ChannelStrip::dragEnterEvent ( QDragEnterEvent* pDragEnterEvent )
103	schoenebeck	1461	{
104			if (m_pChannel == NULL)
105	capela	1499	return;
106
107			bool bAccept = false;
108
109			if (pDragEnterEvent->source() == NULL) {
110			const QMimeData *pMimeData = pDragEnterEvent->mimeData();
111			if (pMimeData && pMimeData->hasUrls()) {
112			QListIterator<QUrl> iter(pMimeData->urls());
113			while (iter.hasNext()) {
114			const QString& sFilename = iter.next().toLocalFile();
115			if (!sFilename.isEmpty()) {
116			bAccept = qsamplerChannel::isInstrumentFile(sFilename);
117			break;
118	schoenebeck	1461	}
119			}
120			}
121			}
122
123	capela	1499	if (bAccept)
124			pDragEnterEvent->accept();
125			else
126			pDragEnterEvent->ignore();
127	schoenebeck	1461	}
128
129
130			void ChannelStrip::dropEvent ( QDropEvent* pDropEvent )
131			{
132	capela	1499	if (m_pChannel == NULL)
133			return;
134	schoenebeck	1461
135	capela	1499	if (pDropEvent->source())
136			return;
137
138			const QMimeData *pMimeData = pDropEvent->mimeData();
139			if (pMimeData && pMimeData->hasUrls()) {
140			QStringList files;
141			QListIterator<QUrl> iter(pMimeData->urls());
142			while (iter.hasNext()) {
143			const QString& sFilename = iter.next().toLocalFile();
144			if (!sFilename.isEmpty()) {
145			// Go and set the dropped instrument filename...
146			m_pChannel->setInstrument(sFilename, 0);
147			// Open up the channel dialog.
148			channelSetup();
149			break;
150			}
151			}
152	schoenebeck	1461	}
153			}
154
155
156			// Channel strip setup formal initializer.
157			void ChannelStrip::setup ( qsamplerChannel *pChannel )
158			{
159	capela	1510	// Destroy any previous channel descriptor;
160			// (remember that once setup we own it!)
161			if (m_pChannel)
162			delete m_pChannel;
163	schoenebeck	1461
164	capela	1510	// Set the new one...
165			m_pChannel = pChannel;
166	schoenebeck	1461
167	capela	1510	// Stabilize this around.
168			updateChannelInfo();
169	schoenebeck	1461
170			// We'll accept drops from now on...
171			if (m_pChannel)
172			setAcceptDrops(true);
173			}
174
175	capela	1513
176	schoenebeck	1461	// Channel secriptor accessor.
177	capela	1509	qsamplerChannel *ChannelStrip::channel (void) const
178	schoenebeck	1461	{
179	capela	1510	return m_pChannel;
180	schoenebeck	1461	}
181
182
183			// Messages view font accessors.
184	capela	1509	QFont ChannelStrip::displayFont (void) const
185	schoenebeck	1461	{
186	capela	1510	return m_ui.EngineNameTextLabel->font();
187	schoenebeck	1461	}
188
189			void ChannelStrip::setDisplayFont ( const QFont & font )
190			{
191	capela	1510	m_ui.EngineNameTextLabel->setFont(font);
192			m_ui.MidiPortChannelTextLabel->setFont(font);
193			m_ui.InstrumentNameTextLabel->setFont(font);
194			m_ui.InstrumentStatusTextLabel->setFont(font);
195	schoenebeck	1461	}
196
197
198			// Channel display background effect.
199			void ChannelStrip::setDisplayEffect ( bool bDisplayEffect )
200			{
201	capela	1499	QPalette pal;
202	capela	1507	pal.setColor(QPalette::Foreground, Qt::yellow);
203	capela	1509	m_ui.EngineNameTextLabel->setPalette(pal);
204			m_ui.MidiPortChannelTextLabel->setPalette(pal);
205	capela	1499	pal.setColor(QPalette::Foreground, Qt::green);
206			if (bDisplayEffect) {
207			QPixmap pm(":/icons/displaybg1.png");
208			pal.setBrush(QPalette::Background, QBrush(pm));
209			} else {
210			pal.setColor(QPalette::Background, Qt::black);
211			}
212	capela	1509	m_ui.ChannelInfoFrame->setPalette(pal);
213			m_ui.StreamVoiceCountTextLabel->setPalette(pal);
214	schoenebeck	1461	}
215
216
217			// Maximum volume slider accessors.
218			void ChannelStrip::setMaxVolume ( int iMaxVolume )
219			{
220	capela	1510	m_iDirtyChange++;
221			m_ui.VolumeSlider->setRange(0, iMaxVolume);
222			m_ui.VolumeSpinBox->setRange(0, iMaxVolume);
223			m_iDirtyChange--;
224	schoenebeck	1461	}
225
226
227			// Channel setup dialog slot.
228			bool ChannelStrip::channelSetup (void)
229			{
230			if (m_pChannel == NULL)
231			return false;
232
233			// Invoke the channel setup dialog.
234			bool bResult = m_pChannel->channelSetup(this);
235			// Notify that this channel has changed.
236			if (bResult)
237			emit channelChanged(this);
238
239			return bResult;
240			}
241
242
243			// Channel mute slot.
244			bool ChannelStrip::channelMute ( bool bMute )
245			{
246			if (m_pChannel == NULL)
247			return false;
248
249			// Invoke the channel mute method.
250			bool bResult = m_pChannel->setChannelMute(bMute);
251			// Notify that this channel has changed.
252			if (bResult)
253			emit channelChanged(this);
254
255			return bResult;
256			}
257
258
259			// Channel solo slot.
260			bool ChannelStrip::channelSolo ( bool bSolo )
261			{
262			if (m_pChannel == NULL)
263			return false;
264
265			// Invoke the channel solo method.
266			bool bResult = m_pChannel->setChannelSolo(bSolo);
267			// Notify that this channel has changed.
268			if (bResult)
269			emit channelChanged(this);
270
271			return bResult;
272			}
273
274
275			// Channel edit slot.
276			void ChannelStrip::channelEdit (void)
277			{
278			if (m_pChannel == NULL)
279			return;
280
281			m_pChannel->editChannel();
282			}
283
284
285			// Channel reset slot.
286			bool ChannelStrip::channelReset (void)
287			{
288			if (m_pChannel == NULL)
289			return false;
290
291			// Invoke the channel reset method.
292			bool bResult = m_pChannel->channelReset();
293			// Notify that this channel has changed.
294			if (bResult)
295			emit channelChanged(this);
296
297			return bResult;
298			}
299
300
301			// Update the channel instrument name.
302			bool ChannelStrip::updateInstrumentName ( bool bForce )
303			{
304			if (m_pChannel == NULL)
305			return false;
306
307			// Do we refresh the actual name?
308			if (bForce)
309			m_pChannel->updateInstrumentName();
310
311			// Instrument name...
312			if (m_pChannel->instrumentName().isEmpty()) {
313	capela	1513	if (m_pChannel->instrumentStatus() >= 0) {
314			m_ui.InstrumentNameTextLabel->setText(
315			' ' + qsamplerChannel::loadingInstrument());
316			} else {
317			m_ui.InstrumentNameTextLabel->setText(
318			' ' + qsamplerChannel::noInstrumentName());
319			}
320			} else {
321			m_ui.InstrumentNameTextLabel->setText(
322			' ' + m_pChannel->instrumentName());
323			}
324	schoenebeck	1461
325			return true;
326			}
327
328
329			// Do the dirty volume change.
330			bool ChannelStrip::updateChannelVolume (void)
331			{
332	capela	1510	if (m_pChannel == NULL)
333			return false;
334	schoenebeck	1461
335	capela	1510	// Convert...
336			int iVolume = ::lroundf(100.0f * m_pChannel->volume());
337			// And clip...
338			if (iVolume < 0)
339			iVolume = 0;
340	schoenebeck	1461
341	capela	1510	// Flag it here, to avoid infinite recursion.
342			m_iDirtyChange++;
343			m_ui.VolumeSlider->setValue(iVolume);
344			m_ui.VolumeSpinBox->setValue(iVolume);
345			m_iDirtyChange--;
346	schoenebeck	1461
347	capela	1510	return true;
348	schoenebeck	1461	}
349
350
351			// Update whole channel info state.
352			bool ChannelStrip::updateChannelInfo (void)
353			{
354	capela	1510	if (m_pChannel == NULL)
355			return false;
356	schoenebeck	1461
357			// Check for error limit/recycle...
358			if (m_iErrorCount > QSAMPLER_ERROR_LIMIT)
359			return true;
360
361	capela	1510	// Update strip caption.
362			QString sText = m_pChannel->channelName();
363			setWindowTitle(sText);
364	capela	1513	m_ui.ChannelSetupPushButton->setText('&' + sText);
365	schoenebeck	1461
366	capela	1510	// Check if we're up and connected.
367	schoenebeck	1461	MainForm* pMainForm = MainForm::getInstance();
368			if (pMainForm->client() == NULL)
369			return false;
370
371	capela	1510	// Read actual channel information.
372			m_pChannel->updateChannelInfo();
373	schoenebeck	1461
374	capela	1510	// Engine name...
375	capela	1513	if (m_pChannel->engineName().isEmpty()) {
376			m_ui.EngineNameTextLabel->setText(
377			' ' + qsamplerChannel::noEngineName());
378			} else {
379			m_ui.EngineNameTextLabel->setText(
380			' ' + m_pChannel->engineName());
381			}
382	schoenebeck	1461
383			// Instrument name...
384			updateInstrumentName(false);
385
386	capela	1510	// MIDI Port/Channel...
387	schoenebeck	1461	QString sMidiPortChannel = QString::number(m_pChannel->midiPort()) + " / ";
388			if (m_pChannel->midiChannel() == LSCP_MIDI_CHANNEL_ALL)
389			sMidiPortChannel += tr("All");
390			else
391			sMidiPortChannel += QString::number(m_pChannel->midiChannel() + 1);
392	capela	1509	m_ui.MidiPortChannelTextLabel->setText(sMidiPortChannel);
393	schoenebeck	1461
394	capela	1499	// Common palette...
395			QPalette pal;
396			const QColor& rgbFore = pal.color(QPalette::Foreground);
397
398	capela	1510	// Instrument status...
399			int iInstrumentStatus = m_pChannel->instrumentStatus();
400			if (iInstrumentStatus < 0) {
401	capela	1499	pal.setColor(QPalette::Foreground, Qt::red);
402	capela	1509	m_ui.InstrumentStatusTextLabel->setPalette(pal);
403	capela	1513	m_ui.InstrumentStatusTextLabel->setText(
404			tr("ERR%1").arg(iInstrumentStatus));
405	capela	1510	m_iErrorCount++;
406			return false;
407			}
408			// All seems normal...
409	capela	1499	pal.setColor(QPalette::Foreground,
410			iInstrumentStatus < 100 ? Qt::yellow : Qt::green);
411	capela	1510	m_ui.InstrumentStatusTextLabel->setPalette(pal);
412	capela	1513	m_ui.InstrumentStatusTextLabel->setText(
413			QString::number(iInstrumentStatus) + '%');
414	capela	1510	m_iErrorCount = 0;
415	schoenebeck	1461
416			#ifdef CONFIG_MUTE_SOLO
417	capela	1510	// Mute/Solo button state coloring...
418			bool bMute = m_pChannel->channelMute();
419	capela	1499	const QColor& rgbButton = pal.color(QPalette::Button);
420			pal.setColor(QPalette::Foreground, rgbFore);
421			pal.setColor(QPalette::Button, bMute ? Qt::yellow : rgbButton);
422	capela	1509	m_ui.ChannelMutePushButton->setPalette(pal);
423			m_ui.ChannelMutePushButton->setDown(bMute);
424	capela	1510	bool bSolo = m_pChannel->channelSolo();
425	capela	1499	pal.setColor(QPalette::Button, bSolo ? Qt::cyan : rgbButton);
426	capela	1509	m_ui.ChannelSoloPushButton->setPalette(pal);
427			m_ui.ChannelSoloPushButton->setDown(bSolo);
428	schoenebeck	1461	#else
429	capela	1509	m_ui.ChannelMutePushButton->setEnabled(false);
430			m_ui.ChannelSoloPushButton->setEnabled(false);
431	schoenebeck	1461	#endif
432
433	capela	1510	// And update the both GUI volume elements;
434			// return success if, and only if, intrument is fully loaded...
435			return updateChannelVolume() && (iInstrumentStatus == 100);
436	schoenebeck	1461	}
437
438
439			// Update whole channel usage state.
440			bool ChannelStrip::updateChannelUsage (void)
441			{
442	capela	1510	if (m_pChannel == NULL)
443			return false;
444	schoenebeck	1461
445			MainForm *pMainForm = MainForm::getInstance();
446			if (pMainForm->client() == NULL)
447			return false;
448
449			// This only makes sense on fully loaded channels...
450			if (m_pChannel->instrumentStatus() < 100)
451	capela	1510	return false;
452	schoenebeck	1461
453	capela	1510	// Get current channel voice count.
454	capela	1513	int iVoiceCount = ::lscp_get_channel_voice_count(
455			pMainForm->client(), m_pChannel->channelID());
456	capela	1510	// Get current stream count.
457	capela	1513	int iStreamCount = ::lscp_get_channel_stream_count(
458			pMainForm->client(), m_pChannel->channelID());
459	capela	1510	// Get current channel buffer fill usage.
460			// As benno has suggested this is the percentage usage
461			// of the least filled buffer stream...
462	capela	1513	int iStreamUsage = ::lscp_get_channel_stream_usage(
463			pMainForm->client(), m_pChannel->channelID());;
464	schoenebeck	1461
465	capela	1510	// Update the GUI elements...
466			m_ui.StreamUsageProgressBar->setValue(iStreamUsage);
467	capela	1513	m_ui.StreamVoiceCountTextLabel->setText(
468			QString("%1 / %2").arg(iStreamCount).arg(iVoiceCount));
469	schoenebeck	1461
470	capela	1510	// We're clean.
471			return true;
472	schoenebeck	1461	}
473
474
475			// Volume change slot.
476			void ChannelStrip::volumeChanged ( int iVolume )
477			{
478	capela	1510	if (m_pChannel == NULL)
479			return;
480	schoenebeck	1461
481	capela	1510	// Avoid recursion.
482			if (m_iDirtyChange > 0)
483			return;
484	schoenebeck	1461
485	capela	1510	// Convert and clip.
486			float fVolume = (float) iVolume / 100.0f;
487			if (fVolume < 0.001f)
488			fVolume = 0.0f;
489	schoenebeck	1461
490	capela	1510	// Update the GUI elements.
491			if (m_pChannel->setVolume(fVolume)) {
492			updateChannelVolume();
493			emit channelChanged(this);
494			}
495	schoenebeck	1461	}
496
497
498			// Context menu event handler.
499			void ChannelStrip::contextMenuEvent( QContextMenuEvent *pEvent )
500			{
501	capela	1510	if (m_pChannel == NULL)
502			return;
503	schoenebeck	1461
504	capela	1510	// We'll just show up the main form's edit menu (thru qsamplerChannel).
505			m_pChannel->contextMenuEvent(pEvent);
506	schoenebeck	1461	}
507
508
509			// Error count hackish accessors.
510			void ChannelStrip::resetErrorCount (void)
511			{
512			m_iErrorCount = 0;
513			}
514
515	capela	1514
516			// Channel strip activation/selection.
517			void ChannelStrip::setSelected ( bool bSelected )
518			{
519			if (bSelected) {
520			if (g_pSelectedStrip == this)
521			return;
522			if (g_pSelectedStrip)
523			g_pSelectedStrip->setSelected(false);
524			g_pSelectedStrip = this;
525			} else {
526			if (g_pSelectedStrip == this)
527			g_pSelectedStrip = NULL;
528			}
529
530			QPalette pal;
531			if (bSelected) {
532			const QColor& color = pal.midlight().color();
533			pal.setColor(QPalette::Background, color.dark(150));
534			pal.setColor(QPalette::Foreground, color.light(150));
535			}
536			QWidget::setPalette(pal);
537			}
538
539
540			bool ChannelStrip::isSelected (void) const
541			{
542			return (this == g_pSelectedStrip);
543			}
544
545
546	schoenebeck	1461	} // namespace QSampler
547	capela	1464
548
549			// end of qsamplerChannelStrip.cpp