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 {

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

// 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 = 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();
}


// 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);
}


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