trunk/src/qsamplerChannelForm.ui.h

// qsamplerChannelForm.ui.h
//
// ui.h extension file, included from the uic-generated form implementation.
/****************************************************************************
   Copyright (C) 2004-2005, rncbc aka Rui Nuno Capela. All rights reserved.

   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

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

#include <qvalidator.h>
#include <qmessagebox.h>
#include <qfiledialog.h>
#include <qfileinfo.h>
#include <qlistbox.h>

#include "qsamplerDeviceForm.h"

#include "config.h"


// Kind of constructor.
void qsamplerChannelForm::init (void)
{
    // Initialize locals.
    m_pChannel = NULL;

    m_iDirtySetup = 0;
    m_iDirtyCount = 0;

        m_midiDevices.setAutoDelete(true);
        m_audioDevices.setAutoDelete(true);

        m_pDeviceForm = NULL;
        
    // Try to restore normal window positioning.
    adjustSize();
}


// Kind of destructor.
void qsamplerChannelForm::destroy (void)
{
        if (m_pDeviceForm)
            delete m_pDeviceForm;
        m_pDeviceForm = NULL;
}


// Channel dialog setup formal initializer.
void qsamplerChannelForm::setup ( qsamplerChannel *pChannel )
{
    m_pChannel = pChannel;

    m_iDirtySetup = 0;
    m_iDirtyCount = 0;

    if (m_pChannel == NULL)
        return;

    // It can be a brand new channel, remember?
    bool bNew = (m_pChannel->channelID() < 0);
    setCaption(m_pChannel->channelName());

    // Check if we're up and connected.
    if (m_pChannel->client() == NULL)
        return;

    qsamplerOptions *pOptions = m_pChannel->options();
    if (pOptions == NULL)
        return;

    // Avoid nested changes.
    m_iDirtySetup++;

    // Load combo box history...
    pOptions->loadComboBoxHistory(InstrumentFileComboBox);

    // Populate Engines list.
    const char **ppszEngines = ::lscp_get_available_engines(m_pChannel->client());
    if (ppszEngines) {
        EngineNameComboBox->clear();
        for (int iEngine = 0; ppszEngines[iEngine]; iEngine++)
            EngineNameComboBox->insertItem(ppszEngines[iEngine]);
    }
    else m_pChannel->appendMessagesClient("lscp_get_available_engines");

    // Populate Audio output type list.
    AudioDriverComboBox->clear();
    AudioDriverComboBox->insertStringList(
                qsamplerDevice::getDrivers(m_pChannel->client(), qsamplerDevice::Audio));

    // Populate MIDI input type list.
    MidiDriverComboBox->clear();
    MidiDriverComboBox->insertStringList(
                qsamplerDevice::getDrivers(m_pChannel->client(), qsamplerDevice::Midi));

    // Read proper channel information,
    // and populate the channel form fields.

    // Engine name...
    QString sEngineName = pChannel->engineName();
    if (sEngineName.isEmpty() || bNew)
        sEngineName = pOptions->sEngineName;
    if (sEngineName.isEmpty())
        sEngineName = qsamplerChannel::noEngineName();
    if (EngineNameComboBox->listBox()->findItem(sEngineName, Qt::ExactMatch) == NULL)
        EngineNameComboBox->insertItem(sEngineName);
    EngineNameComboBox->setCurrentText(sEngineName);
    // Instrument filename and index...
    QString sInstrumentFile = pChannel->instrumentFile();
    if (sInstrumentFile.isEmpty())
        sInstrumentFile = qsamplerChannel::noInstrumentName();
    InstrumentFileComboBox->setCurrentText(sInstrumentFile);
    InstrumentNrComboBox->clear();
    InstrumentNrComboBox->insertStringList(
                qsamplerChannel::getInstrumentList(sInstrumentFile,
                pOptions->bInstrumentNames));
    InstrumentNrComboBox->setCurrentItem(pChannel->instrumentNr());
    
        // MIDI input device...
        qsamplerDevice midiDevice(m_pChannel->mainForm(),
                qsamplerDevice::Midi, m_pChannel->midiDevice());
    // MIDI input driver...
        QString sMidiDriver = midiDevice.driverName();
        if (sMidiDriver.isEmpty() || bNew)
                sMidiDriver = pOptions->sMidiDriver;
        if (!sMidiDriver.isEmpty()) {
                if (MidiDriverComboBox->listBox()->findItem(sMidiDriver, Qt::ExactMatch) == NULL)
                        MidiDriverComboBox->insertItem(sMidiDriver);
                MidiDriverComboBox->setCurrentText(sMidiDriver);
        }
        selectMidiDriver(sMidiDriver);
        if (!bNew)
                MidiDeviceComboBox->setCurrentText(midiDevice.deviceName());
        selectMidiDevice(MidiDeviceComboBox->currentItem());
    // MIDI input port...
    MidiPortSpinBox->setValue(pChannel->midiPort());
    // MIDI input channel...
    int iMidiChannel = pChannel->midiChannel();
    // When new, try to suggest a sensible MIDI channel...
    if (iMidiChannel < 0)
        iMidiChannel = (::lscp_get_channels(m_pChannel->client()) % 16);
    MidiChannelComboBox->setCurrentItem(iMidiChannel);

        // Audio output device...
        qsamplerDevice audioDevice(m_pChannel->mainForm(),
                qsamplerDevice::Audio, m_pChannel->audioDevice());
        // Audio output driver...
        QString sAudioDriver = audioDevice.driverName();
        if (sAudioDriver.isEmpty() || bNew)
                sAudioDriver = pOptions->sAudioDriver;
        if (!sAudioDriver.isEmpty()) {
                if (AudioDriverComboBox->listBox()->findItem(sAudioDriver, Qt::ExactMatch) == NULL)
                        AudioDriverComboBox->insertItem(sAudioDriver);
                AudioDriverComboBox->setCurrentText(sAudioDriver);
        }
        selectAudioDriver(sAudioDriver);
        if (!bNew)
                AudioDeviceComboBox->setCurrentText(audioDevice.deviceName());
        selectAudioDevice(AudioDeviceComboBox->currentItem());

        // As convenient, make it ready on stabilizeForm() for
        // prompt acceptance, if we got the minimum required...
        if (sEngineName != qsamplerChannel::noEngineName() &&
                sInstrumentFile != qsamplerChannel::noInstrumentName())
                m_iDirtyCount++;
    // Done.
    m_iDirtySetup--;
    stabilizeForm();
}


// Accept settings (OK button slot).
void qsamplerChannelForm::accept (void)
{
    if (m_pChannel == NULL)
        return;

    qsamplerOptions *pOptions = m_pChannel->options();
    if (pOptions == NULL)
        return;

    // We'll go for it!
    if (m_iDirtyCount > 0) {
        int iErrors = 0;
        // Are we a new channel?
        if (!m_pChannel->addChannel())
            iErrors++;
                // Accept Audio driver or device selection...
                if (m_audioDevices.isEmpty()) {
                        if (!m_pChannel->setAudioDriver(AudioDriverComboBox->currentText()))
                                iErrors++;
                } else {
                        qsamplerDevice *pDevice = m_audioDevices.at(AudioDeviceComboBox->currentItem());
                        if (pDevice == NULL)
                                iErrors++;
                        else if (!m_pChannel->setAudioDevice(pDevice->deviceID()))
                                iErrors++;
                }
                // Accept MIDI driver or device selection...
                if (m_midiDevices.isEmpty()) {
                        if (!m_pChannel->setMidiDriver(MidiDriverComboBox->currentText()))
                                iErrors++;
                } else {
                        qsamplerDevice *pDevice = m_midiDevices.at(MidiDeviceComboBox->currentItem());
                        if (pDevice == NULL)
                                iErrors++;
                        else if (!m_pChannel->setMidiDevice(pDevice->deviceID()))
                                iErrors++;
                }
        // MIDI input port number...
        if (!m_pChannel->setMidiPort(MidiPortSpinBox->value()))
            iErrors++;
        // MIDI input channel...
        if (!m_pChannel->setMidiChannel(MidiChannelComboBox->currentItem()))
            iErrors++;
        // Engine name...
        if (!m_pChannel->loadEngine(EngineNameComboBox->currentText()))
            iErrors++;
        // Instrument file and index...
        if (!m_pChannel->loadInstrument(InstrumentFileComboBox->currentText(), InstrumentNrComboBox->currentItem()))
            iErrors++;
        // Show error messages?
        if (iErrors > 0)
            m_pChannel->appendMessagesError(tr("Some channel settings could not be set.\n\nSorry."));
    }

    // Save default engine name, instrument directory and history...
    pOptions->sInstrumentDir = QFileInfo(InstrumentFileComboBox->currentText()).dirPath(true);
    pOptions->sEngineName  = EngineNameComboBox->currentText();
    pOptions->sAudioDriver = AudioDriverComboBox->currentText();
    pOptions->sMidiDriver  = MidiDriverComboBox->currentText();
    pOptions->saveComboBoxHistory(InstrumentFileComboBox);

    // Just go with dialog acceptance.
    QDialog::accept();
}


// Reject settings (Cancel button slot).
void qsamplerChannelForm::reject (void)
{
    bool bReject = true;

    // Check if there's any pending changes...
    if (m_iDirtyCount > 0 && OkPushButton->isEnabled()) {
        switch (QMessageBox::warning(this, tr("Warning"),
            tr("Some channel settings have been changed.\n\n"
               "Do you want to apply the changes?"),
            tr("Apply"), tr("Discard"), tr("Cancel"))) {
        case 0:     // Apply...
            accept();
            return;
        case 1:     // Discard
            break;
        default:    // Cancel.
            bReject = false;
        }
    }

    if (bReject)
        QDialog::reject();
}


// Browse and open an instrument file.
void qsamplerChannelForm::openInstrumentFile (void)
{
    qsamplerOptions *pOptions = m_pChannel->options();
    if (pOptions == NULL)
        return;

    // FIXME: the instrument file filters should be restricted,
    // depending on the current engine.
    QString sInstrumentFile = QFileDialog::getOpenFileName(
            pOptions->sInstrumentDir,                   // Start here.
            tr("Instrument files") + " (*.gig *.dls)",  // Filter (GIG and DLS files)
            this, 0,                                    // Parent and name (none)
            tr("Instrument files")                      // Caption.
    );

    if (sInstrumentFile.isEmpty())
        return;

    InstrumentFileComboBox->setCurrentText(sInstrumentFile);
}


// Refresh the actual instrument name.
void qsamplerChannelForm::updateInstrumentName (void)
{
    qsamplerOptions *pOptions = m_pChannel->options();
    if (pOptions == NULL)
        return;

    // Finally this better idea would be to use libgig
    // to retrieve the REAL instrument names.
    InstrumentNrComboBox->clear();
    InstrumentNrComboBox->insertStringList(
        qsamplerChannel::getInstrumentList(
                        InstrumentFileComboBox->currentText(),
                        pOptions->bInstrumentNames)
    );

    optionsChanged();
}

// Show device options dialog.
void qsamplerChannelForm::setupDevice ( qsamplerDevice *pDevice )
{
        if (pDevice == NULL)
            return;

        // Create the device form if not already...
        if (m_pDeviceForm == NULL) {
                m_pDeviceForm = new qsamplerDeviceForm(this, 0,
                        WType_Dialog | WShowModal);
                m_pDeviceForm->setMainForm(m_pChannel->mainForm());
                m_pDeviceForm->move(QDialog::pos() + QPoint(32, 32));
        }

        // Refresh the device form with selected data.
        if (m_pDeviceForm) {
                m_pDeviceForm->setClient(m_pChannel->client()); // <-- refreshDevices().
                m_pDeviceForm->setDevice(pDevice->deviceType(),
                        pDevice->deviceID());
                m_pDeviceForm->show();
        }
}


// Refresh MIDI device options.
void qsamplerChannelForm::selectMidiDriver ( const QString& sMidiDriver )
{
        const QString sDriverName = sMidiDriver.upper();
        
        MidiDeviceComboBox->clear();
        m_audioDevices.clear();

        const QPixmap& midiPixmap = QPixmap::fromMimeSource("midi2.png");
        int *piDeviceIDs = qsamplerDevice::getDevices(m_pChannel->client(),
                qsamplerDevice::Midi);
        for (int i = 0; piDeviceIDs && piDeviceIDs[i] >= 0; i++) {
                qsamplerDevice *pDevice = new qsamplerDevice(m_pChannel->mainForm(),
                        qsamplerDevice::Midi, piDeviceIDs[i]);
                if (pDevice->driverName().upper() == sDriverName) {
                        MidiDeviceComboBox->insertItem(midiPixmap, pDevice->deviceName());
                        m_midiDevices.append(pDevice);
                } else {
                        delete pDevice;
                }
        }

        bool bEnabled = !m_midiDevices.isEmpty();
        if (!bEnabled)
                MidiDeviceComboBox->insertItem(tr("(New MIDI device)"));
        MidiDeviceTextLabel->setEnabled(bEnabled);
        MidiDeviceComboBox->setEnabled(bEnabled);
        MidiDevicePushButton->setEnabled(bEnabled);
        optionsChanged();
}


// Select MIDI device options.
void qsamplerChannelForm::selectMidiDevice ( int iMidiItem )
{
        qsamplerDevice *pDevice = m_midiDevices.at(iMidiItem);
        if (pDevice) {
                const qsamplerDeviceParamMap& params = pDevice->params();
                int iPorts = params["PORTS"].value.toInt();
                MidiPortTextLabel->setEnabled(iPorts > 0);
                MidiPortSpinBox->setEnabled(iPorts > 0);
                if (iPorts > 0)
                        MidiPortSpinBox->setMaxValue(iPorts - 1);
        }
        optionsChanged();
}


// MIDI device options.
void qsamplerChannelForm::setupMidiDevice (void)
{
        setupDevice(m_midiDevices.at(MidiDeviceComboBox->currentItem()));
}


// Refresh Audio device options.
void qsamplerChannelForm::selectAudioDriver ( const QString& sAudioDriver )
{
        const QString sDriverName = sAudioDriver.upper();

        AudioDeviceComboBox->clear();
        m_audioDevices.clear();

        const QPixmap& audioPixmap = QPixmap::fromMimeSource("audio2.png");
        int *piDeviceIDs = qsamplerDevice::getDevices(m_pChannel->client(),
                qsamplerDevice::Audio);
        for (int i = 0; piDeviceIDs && piDeviceIDs[i] >= 0; i++) {
                qsamplerDevice *pDevice = new qsamplerDevice(m_pChannel->mainForm(),
                        qsamplerDevice::Audio, piDeviceIDs[i]);
                if (pDevice->driverName().upper() == sDriverName) {
                        AudioDeviceComboBox->insertItem(audioPixmap, pDevice->deviceName());
                        m_audioDevices.append(pDevice);
                } else {
                        delete pDevice;
                }
        }

        bool bEnabled = !m_audioDevices.isEmpty();
        if (!bEnabled)
                AudioDeviceComboBox->insertItem(tr("(New Audio device)"));
        AudioDeviceTextLabel->setEnabled(bEnabled);
        AudioDeviceComboBox->setEnabled(bEnabled);
        AudioDevicePushButton->setEnabled(bEnabled);
        optionsChanged();
}


// Select Audio device options.
void qsamplerChannelForm::selectAudioDevice ( int iAudioItem )
{
        qsamplerDevice *pDevice = m_audioDevices.at(iAudioItem);
        if (pDevice) {
                // Is there anything to do here?
        }
        optionsChanged();
}


// Audio device options.
void qsamplerChannelForm::setupAudioDevice (void)
{
        setupDevice(m_audioDevices.at(AudioDeviceComboBox->currentItem()));
}


// Dirty up settings.
void qsamplerChannelForm::optionsChanged (void)
{
    if (m_iDirtySetup > 0)
        return;

    m_iDirtyCount++;
    stabilizeForm();
}


// Stabilize current form state.
void qsamplerChannelForm::stabilizeForm (void)
{
    const QString& sFilename = InstrumentFileComboBox->currentText();
    OkPushButton->setEnabled(m_iDirtyCount > 0 && !sFilename.isEmpty() && QFileInfo(sFilename).exists());
}


// end of qsamplerChannelForm.ui.h

1	// qsamplerChannelForm.ui.h
2	//
3	// ui.h extension file, included from the uic-generated form implementation.
4	/****************************************************************************
5	Copyright (C) 2004-2005, rncbc aka Rui Nuno Capela. All rights reserved.
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
18	along with this program; if not, write to the Free Software
19	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20
21	*****************************************************************************/
22
23	#include <qvalidator.h>
24	#include <qmessagebox.h>
25	#include <qfiledialog.h>
26	#include <qfileinfo.h>
27	#include <qlistbox.h>
28
29	#include "qsamplerDeviceForm.h"
30
31	#include "config.h"
32
33
34	// Kind of constructor.
35	void qsamplerChannelForm::init (void)
36	{
37	// Initialize locals.
38	m_pChannel = NULL;
39
40	m_iDirtySetup = 0;
41	m_iDirtyCount = 0;
42
43	m_midiDevices.setAutoDelete(true);
44	m_audioDevices.setAutoDelete(true);
45
46	m_pDeviceForm = NULL;
47
48	// Try to restore normal window positioning.
49	adjustSize();
50	}
51
52
53	// Kind of destructor.
54	void qsamplerChannelForm::destroy (void)
55	{
56	if (m_pDeviceForm)
57	delete m_pDeviceForm;
58	m_pDeviceForm = NULL;
59	}
60
61
62	// Channel dialog setup formal initializer.
63	void qsamplerChannelForm::setup ( qsamplerChannel *pChannel )
64	{
65	m_pChannel = pChannel;
66
67	m_iDirtySetup = 0;
68	m_iDirtyCount = 0;
69
70	if (m_pChannel == NULL)
71	return;
72
73	// It can be a brand new channel, remember?
74	bool bNew = (m_pChannel->channelID() < 0);
75	setCaption(m_pChannel->channelName());
76
77	// Check if we're up and connected.
78	if (m_pChannel->client() == NULL)
79	return;
80
81	qsamplerOptions *pOptions = m_pChannel->options();
82	if (pOptions == NULL)
83	return;
84
85	// Avoid nested changes.
86	m_iDirtySetup++;
87
88	// Load combo box history...
89	pOptions->loadComboBoxHistory(InstrumentFileComboBox);
90
91	// Populate Engines list.
92	const char **ppszEngines = ::lscp_get_available_engines(m_pChannel->client());
93	if (ppszEngines) {
94	EngineNameComboBox->clear();
95	for (int iEngine = 0; ppszEngines[iEngine]; iEngine++)
96	EngineNameComboBox->insertItem(ppszEngines[iEngine]);
97	}
98	else m_pChannel->appendMessagesClient("lscp_get_available_engines");
99
100	// Populate Audio output type list.
101	AudioDriverComboBox->clear();
102	AudioDriverComboBox->insertStringList(
103	qsamplerDevice::getDrivers(m_pChannel->client(), qsamplerDevice::Audio));
104
105	// Populate MIDI input type list.
106	MidiDriverComboBox->clear();
107	MidiDriverComboBox->insertStringList(
108	qsamplerDevice::getDrivers(m_pChannel->client(), qsamplerDevice::Midi));
109
110	// Read proper channel information,
111	// and populate the channel form fields.
112
113	// Engine name...
114	QString sEngineName = pChannel->engineName();
115	if (sEngineName.isEmpty() \|\| bNew)
116	sEngineName = pOptions->sEngineName;
117	if (sEngineName.isEmpty())
118	sEngineName = qsamplerChannel::noEngineName();
119	if (EngineNameComboBox->listBox()->findItem(sEngineName, Qt::ExactMatch) == NULL)
120	EngineNameComboBox->insertItem(sEngineName);
121	EngineNameComboBox->setCurrentText(sEngineName);
122	// Instrument filename and index...
123	QString sInstrumentFile = pChannel->instrumentFile();
124	if (sInstrumentFile.isEmpty())
125	sInstrumentFile = qsamplerChannel::noInstrumentName();
126	InstrumentFileComboBox->setCurrentText(sInstrumentFile);
127	InstrumentNrComboBox->clear();
128	InstrumentNrComboBox->insertStringList(
129	qsamplerChannel::getInstrumentList(sInstrumentFile,
130	pOptions->bInstrumentNames));
131	InstrumentNrComboBox->setCurrentItem(pChannel->instrumentNr());
132
133	// MIDI input device...
134	qsamplerDevice midiDevice(m_pChannel->mainForm(),
135	qsamplerDevice::Midi, m_pChannel->midiDevice());
136	// MIDI input driver...
137	QString sMidiDriver = midiDevice.driverName();
138	if (sMidiDriver.isEmpty() \|\| bNew)
139	sMidiDriver = pOptions->sMidiDriver;
140	if (!sMidiDriver.isEmpty()) {
141	if (MidiDriverComboBox->listBox()->findItem(sMidiDriver, Qt::ExactMatch) == NULL)
142	MidiDriverComboBox->insertItem(sMidiDriver);
143	MidiDriverComboBox->setCurrentText(sMidiDriver);
144	}
145	selectMidiDriver(sMidiDriver);
146	if (!bNew)
147	MidiDeviceComboBox->setCurrentText(midiDevice.deviceName());
148	selectMidiDevice(MidiDeviceComboBox->currentItem());
149	// MIDI input port...
150	MidiPortSpinBox->setValue(pChannel->midiPort());
151	// MIDI input channel...
152	int iMidiChannel = pChannel->midiChannel();
153	// When new, try to suggest a sensible MIDI channel...
154	if (iMidiChannel < 0)
155	iMidiChannel = (::lscp_get_channels(m_pChannel->client()) % 16);
156	MidiChannelComboBox->setCurrentItem(iMidiChannel);
157
158	// Audio output device...
159	qsamplerDevice audioDevice(m_pChannel->mainForm(),
160	qsamplerDevice::Audio, m_pChannel->audioDevice());
161	// Audio output driver...
162	QString sAudioDriver = audioDevice.driverName();
163	if (sAudioDriver.isEmpty() \|\| bNew)
164	sAudioDriver = pOptions->sAudioDriver;
165	if (!sAudioDriver.isEmpty()) {
166	if (AudioDriverComboBox->listBox()->findItem(sAudioDriver, Qt::ExactMatch) == NULL)
167	AudioDriverComboBox->insertItem(sAudioDriver);
168	AudioDriverComboBox->setCurrentText(sAudioDriver);
169	}
170	selectAudioDriver(sAudioDriver);
171	if (!bNew)
172	AudioDeviceComboBox->setCurrentText(audioDevice.deviceName());
173	selectAudioDevice(AudioDeviceComboBox->currentItem());
174
175	// As convenient, make it ready on stabilizeForm() for
176	// prompt acceptance, if we got the minimum required...
177	if (sEngineName != qsamplerChannel::noEngineName() &&
178	sInstrumentFile != qsamplerChannel::noInstrumentName())
179	m_iDirtyCount++;
180	// Done.
181	m_iDirtySetup--;
182	stabilizeForm();
183	}
184
185
186	// Accept settings (OK button slot).
187	void qsamplerChannelForm::accept (void)
188	{
189	if (m_pChannel == NULL)
190	return;
191
192	qsamplerOptions *pOptions = m_pChannel->options();
193	if (pOptions == NULL)
194	return;
195
196	// We'll go for it!
197	if (m_iDirtyCount > 0) {
198	int iErrors = 0;
199	// Are we a new channel?
200	if (!m_pChannel->addChannel())
201	iErrors++;
202	// Accept Audio driver or device selection...
203	if (m_audioDevices.isEmpty()) {
204	if (!m_pChannel->setAudioDriver(AudioDriverComboBox->currentText()))
205	iErrors++;
206	} else {
207	qsamplerDevice *pDevice = m_audioDevices.at(AudioDeviceComboBox->currentItem());
208	if (pDevice == NULL)
209	iErrors++;
210	else if (!m_pChannel->setAudioDevice(pDevice->deviceID()))
211	iErrors++;
212	}
213	// Accept MIDI driver or device selection...
214	if (m_midiDevices.isEmpty()) {
215	if (!m_pChannel->setMidiDriver(MidiDriverComboBox->currentText()))
216	iErrors++;
217	} else {
218	qsamplerDevice *pDevice = m_midiDevices.at(MidiDeviceComboBox->currentItem());
219	if (pDevice == NULL)
220	iErrors++;
221	else if (!m_pChannel->setMidiDevice(pDevice->deviceID()))
222	iErrors++;
223	}
224	// MIDI input port number...
225	if (!m_pChannel->setMidiPort(MidiPortSpinBox->value()))
226	iErrors++;
227	// MIDI input channel...
228	if (!m_pChannel->setMidiChannel(MidiChannelComboBox->currentItem()))
229	iErrors++;
230	// Engine name...
231	if (!m_pChannel->loadEngine(EngineNameComboBox->currentText()))
232	iErrors++;
233	// Instrument file and index...
234	if (!m_pChannel->loadInstrument(InstrumentFileComboBox->currentText(), InstrumentNrComboBox->currentItem()))
235	iErrors++;
236	// Show error messages?
237	if (iErrors > 0)
238	m_pChannel->appendMessagesError(tr("Some channel settings could not be set.\n\nSorry."));
239	}
240
241	// Save default engine name, instrument directory and history...
242	pOptions->sInstrumentDir = QFileInfo(InstrumentFileComboBox->currentText()).dirPath(true);
243	pOptions->sEngineName = EngineNameComboBox->currentText();
244	pOptions->sAudioDriver = AudioDriverComboBox->currentText();
245	pOptions->sMidiDriver = MidiDriverComboBox->currentText();
246	pOptions->saveComboBoxHistory(InstrumentFileComboBox);
247
248	// Just go with dialog acceptance.
249	QDialog::accept();
250	}
251
252
253	// Reject settings (Cancel button slot).
254	void qsamplerChannelForm::reject (void)
255	{
256	bool bReject = true;
257
258	// Check if there's any pending changes...
259	if (m_iDirtyCount > 0 && OkPushButton->isEnabled()) {
260	switch (QMessageBox::warning(this, tr("Warning"),
261	tr("Some channel settings have been changed.\n\n"
262	"Do you want to apply the changes?"),
263	tr("Apply"), tr("Discard"), tr("Cancel"))) {
264	case 0: // Apply...
265	accept();
266	return;
267	case 1: // Discard
268	break;
269	default: // Cancel.
270	bReject = false;
271	}
272	}
273
274	if (bReject)
275	QDialog::reject();
276	}
277
278
279	// Browse and open an instrument file.
280	void qsamplerChannelForm::openInstrumentFile (void)
281	{
282	qsamplerOptions *pOptions = m_pChannel->options();
283	if (pOptions == NULL)
284	return;
285
286	// FIXME: the instrument file filters should be restricted,
287	// depending on the current engine.
288	QString sInstrumentFile = QFileDialog::getOpenFileName(
289	pOptions->sInstrumentDir, // Start here.
290	tr("Instrument files") + " (.gig .dls)", // Filter (GIG and DLS files)
291	this, 0, // Parent and name (none)
292	tr("Instrument files") // Caption.
293	);
294
295	if (sInstrumentFile.isEmpty())
296	return;
297
298	InstrumentFileComboBox->setCurrentText(sInstrumentFile);
299	}
300
301
302	// Refresh the actual instrument name.
303	void qsamplerChannelForm::updateInstrumentName (void)
304	{
305	qsamplerOptions *pOptions = m_pChannel->options();
306	if (pOptions == NULL)
307	return;
308
309	// Finally this better idea would be to use libgig
310	// to retrieve the REAL instrument names.
311	InstrumentNrComboBox->clear();
312	InstrumentNrComboBox->insertStringList(
313	qsamplerChannel::getInstrumentList(
314	InstrumentFileComboBox->currentText(),
315	pOptions->bInstrumentNames)
316	);
317
318	optionsChanged();
319	}
320
321	// Show device options dialog.
322	void qsamplerChannelForm::setupDevice ( qsamplerDevice *pDevice )
323	{
324	if (pDevice == NULL)
325	return;
326
327	// Create the device form if not already...
328	if (m_pDeviceForm == NULL) {
329	m_pDeviceForm = new qsamplerDeviceForm(this, 0,
330	WType_Dialog \| WShowModal);
331	m_pDeviceForm->setMainForm(m_pChannel->mainForm());
332	m_pDeviceForm->move(QDialog::pos() + QPoint(32, 32));
333	}
334
335	// Refresh the device form with selected data.
336	if (m_pDeviceForm) {
337	m_pDeviceForm->setClient(m_pChannel->client()); // <-- refreshDevices().
338	m_pDeviceForm->setDevice(pDevice->deviceType(),
339	pDevice->deviceID());
340	m_pDeviceForm->show();
341	}
342	}
343
344
345	// Refresh MIDI device options.
346	void qsamplerChannelForm::selectMidiDriver ( const QString& sMidiDriver )
347	{
348	const QString sDriverName = sMidiDriver.upper();
349
350	MidiDeviceComboBox->clear();
351	m_audioDevices.clear();
352
353	const QPixmap& midiPixmap = QPixmap::fromMimeSource("midi2.png");
354	int *piDeviceIDs = qsamplerDevice::getDevices(m_pChannel->client(),
355	qsamplerDevice::Midi);
356	for (int i = 0; piDeviceIDs && piDeviceIDs[i] >= 0; i++) {
357	qsamplerDevice *pDevice = new qsamplerDevice(m_pChannel->mainForm(),
358	qsamplerDevice::Midi, piDeviceIDs[i]);
359	if (pDevice->driverName().upper() == sDriverName) {
360	MidiDeviceComboBox->insertItem(midiPixmap, pDevice->deviceName());
361	m_midiDevices.append(pDevice);
362	} else {
363	delete pDevice;
364	}
365	}
366
367	bool bEnabled = !m_midiDevices.isEmpty();
368	if (!bEnabled)
369	MidiDeviceComboBox->insertItem(tr("(New MIDI device)"));
370	MidiDeviceTextLabel->setEnabled(bEnabled);
371	MidiDeviceComboBox->setEnabled(bEnabled);
372	MidiDevicePushButton->setEnabled(bEnabled);
373	optionsChanged();
374	}
375
376
377	// Select MIDI device options.
378	void qsamplerChannelForm::selectMidiDevice ( int iMidiItem )
379	{
380	qsamplerDevice *pDevice = m_midiDevices.at(iMidiItem);
381	if (pDevice) {
382	const qsamplerDeviceParamMap& params = pDevice->params();
383	int iPorts = params["PORTS"].value.toInt();
384	MidiPortTextLabel->setEnabled(iPorts > 0);
385	MidiPortSpinBox->setEnabled(iPorts > 0);
386	if (iPorts > 0)
387	MidiPortSpinBox->setMaxValue(iPorts - 1);
388	}
389	optionsChanged();
390	}
391
392
393	// MIDI device options.
394	void qsamplerChannelForm::setupMidiDevice (void)
395	{
396	setupDevice(m_midiDevices.at(MidiDeviceComboBox->currentItem()));
397	}
398
399
400	// Refresh Audio device options.
401	void qsamplerChannelForm::selectAudioDriver ( const QString& sAudioDriver )
402	{
403	const QString sDriverName = sAudioDriver.upper();
404
405	AudioDeviceComboBox->clear();
406	m_audioDevices.clear();
407
408	const QPixmap& audioPixmap = QPixmap::fromMimeSource("audio2.png");
409	int *piDeviceIDs = qsamplerDevice::getDevices(m_pChannel->client(),
410	qsamplerDevice::Audio);
411	for (int i = 0; piDeviceIDs && piDeviceIDs[i] >= 0; i++) {
412	qsamplerDevice *pDevice = new qsamplerDevice(m_pChannel->mainForm(),
413	qsamplerDevice::Audio, piDeviceIDs[i]);
414	if (pDevice->driverName().upper() == sDriverName) {
415	AudioDeviceComboBox->insertItem(audioPixmap, pDevice->deviceName());
416	m_audioDevices.append(pDevice);
417	} else {
418	delete pDevice;
419	}
420	}
421
422	bool bEnabled = !m_audioDevices.isEmpty();
423	if (!bEnabled)
424	AudioDeviceComboBox->insertItem(tr("(New Audio device)"));
425	AudioDeviceTextLabel->setEnabled(bEnabled);
426	AudioDeviceComboBox->setEnabled(bEnabled);
427	AudioDevicePushButton->setEnabled(bEnabled);
428	optionsChanged();
429	}
430
431
432	// Select Audio device options.
433	void qsamplerChannelForm::selectAudioDevice ( int iAudioItem )
434	{
435	qsamplerDevice *pDevice = m_audioDevices.at(iAudioItem);
436	if (pDevice) {
437	// Is there anything to do here?
438	}
439	optionsChanged();
440	}
441
442
443	// Audio device options.
444	void qsamplerChannelForm::setupAudioDevice (void)
445	{
446	setupDevice(m_audioDevices.at(AudioDeviceComboBox->currentItem()));
447	}
448
449
450	// Dirty up settings.
451	void qsamplerChannelForm::optionsChanged (void)
452	{
453	if (m_iDirtySetup > 0)
454	return;
455
456	m_iDirtyCount++;
457	stabilizeForm();
458	}
459
460
461	// Stabilize current form state.
462	void qsamplerChannelForm::stabilizeForm (void)
463	{
464	const QString& sFilename = InstrumentFileComboBox->currentText();
465	OkPushButton->setEnabled(m_iDirtyCount > 0 && !sFilename.isEmpty() && QFileInfo(sFilename).exists());
466	}
467
468
469	// end of qsamplerChannelForm.ui.h
470