trunk/src/qsamplerInstrumentForm.cpp

// qsamplerInstrumentForm.cpp
//
/****************************************************************************
   Copyright (C) 2003-2010, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

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

#include "qsamplerAbout.h"
#include "qsamplerInstrumentForm.h"

#include "qsamplerOptions.h"
#include "qsamplerChannel.h"
#include "qsamplerMainForm.h"

#include <QMessageBox>
#include <QPushButton>
#include <QFileDialog>

// 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::InstrumentForm -- Instrument map item form implementation.
//

InstrumentForm::InstrumentForm ( QWidget *pParent )
        : QDialog(pParent)
{
        m_ui.setupUi(this);

        // Initialize locals.
        m_pInstrument = NULL;

        m_iDirtySetup = 0;
        m_iDirtyCount = 0;
        m_iDirtyName  = 0;

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


        QObject::connect(m_ui.MapComboBox,
                SIGNAL(activated(int)),
                SLOT(changed()));
        QObject::connect(m_ui.BankSpinBox,
                SIGNAL(valueChanged(int)),
                SLOT(changed()));
        QObject::connect(m_ui.ProgSpinBox,
                SIGNAL(valueChanged(int)),
                SLOT(changed()));
        QObject::connect(m_ui.NameLineEdit,
                SIGNAL(textChanged(const QString&)),
                SLOT(nameChanged(const QString&)));
        QObject::connect(m_ui.EngineNameComboBox,
                SIGNAL(activated(int)),
                SLOT(changed()));
        QObject::connect(m_ui.InstrumentFileComboBox,
                SIGNAL(activated(const QString&)),
                SLOT(updateInstrumentName()));
        QObject::connect(m_ui.InstrumentFileToolButton,
                SIGNAL(clicked()),
                SLOT(openInstrumentFile()));
        QObject::connect(m_ui.InstrumentNrComboBox,
                SIGNAL(activated(int)),
                SLOT(instrumentNrChanged()));
        QObject::connect(m_ui.VolumeSpinBox,
                SIGNAL(valueChanged(int)),
                SLOT(changed()));
        QObject::connect(m_ui.LoadModeComboBox,
                SIGNAL(activated(int)),
                SLOT(changed()));
        QObject::connect(m_ui.DialogButtonBox,
                SIGNAL(accepted()),
                SLOT(accept()));
        QObject::connect(m_ui.DialogButtonBox,
                SIGNAL(rejected()),
                SLOT(reject()));
}


InstrumentForm::~InstrumentForm (void)
{
}


// Channel dialog setup formal initializer.
void InstrumentForm::setup ( Instrument *pInstrument )
{
        m_pInstrument = pInstrument;

        m_iDirtySetup = 0;
        m_iDirtyCount = 0;
        m_iDirtyName  = 0;

        if (m_pInstrument == NULL)
                return;

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

        Options *pOptions = pMainForm->options();
        if (pOptions == NULL)
                return;

        // It can be a brand new channel, remember?
        bool bNew = (m_pInstrument->bank() < 0 || m_pInstrument->prog() < 0);
        if (!bNew) {
                m_pInstrument->getInstrument();
                m_iDirtyName++;
        }

        // Avoid nested changes.
        m_iDirtySetup++;

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

        // Populate maps list.
        m_ui.MapComboBox->clear();
        m_ui.MapComboBox->insertItems(0, Instrument::getMapNames());

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

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

        // Instrument map name...
        int iMap = (bNew ? pOptions->iMidiMap : m_pInstrument->map());
        if (iMap < 0)
                iMap = 0;
        const QString& sMapName = Instrument::getMapName(iMap);
        if (!sMapName.isEmpty()) {
                m_ui.MapComboBox->setCurrentIndex(
                        m_ui.MapComboBox->findText(sMapName,
                                Qt::MatchExactly | Qt::MatchCaseSensitive));
        }

        // It might be no maps around...
        bool bMapEnabled = (m_ui.MapComboBox->count() > 0);
        m_ui.MapTextLabel->setEnabled(bMapEnabled);
        m_ui.MapComboBox->setEnabled(bMapEnabled);

        // Instrument bank/program...
        int iBank = (bNew ? pOptions->iMidiBank : m_pInstrument->bank());
        int iProg = (bNew ? pOptions->iMidiProg : m_pInstrument->prog()) + 1;
        if (bNew && iProg > 128) {
                iProg = 1;
                iBank++;
        }
        m_ui.BankSpinBox->setValue(iBank);
        m_ui.ProgSpinBox->setValue(iProg);

        // Instrument name...
        m_ui.NameLineEdit->setText(m_pInstrument->name());

        // Engine name...
        QString sEngineName = m_pInstrument->engineName();
        if (sEngineName.isEmpty() || bNew)
                sEngineName = pOptions->sEngineName;
        if (sEngineName.isEmpty())
                sEngineName = Channel::noEngineName();
        if (m_ui.EngineNameComboBox->findText(sEngineName,
                        Qt::MatchExactly | Qt::MatchCaseSensitive) < 0) {
                m_ui.EngineNameComboBox->addItem(sEngineName);
        }
        m_ui.EngineNameComboBox->setCurrentIndex(
                m_ui.EngineNameComboBox->findText(sEngineName,
                        Qt::MatchExactly | Qt::MatchCaseSensitive));

        // Instrument filename and index...
        QString sInstrumentFile = m_pInstrument->instrumentFile();
        if (sInstrumentFile.isEmpty())
                sInstrumentFile = Channel::noInstrumentName();
        m_ui.InstrumentFileComboBox->setEditText(sInstrumentFile);
        m_ui.InstrumentNrComboBox->clear();
        m_ui.InstrumentNrComboBox->insertItems(0,
                Channel::getInstrumentList(sInstrumentFile,
                pOptions->bInstrumentNames));
        m_ui.InstrumentNrComboBox->setCurrentIndex(m_pInstrument->instrumentNr());

        // Instrument volume....
        int iVolume = (bNew ? pOptions->iVolume :
                ::lroundf(100.0f * m_pInstrument->volume()));
        m_ui.VolumeSpinBox->setValue(iVolume);

        // Instrument load mode...
        int iLoadMode = (bNew ? pOptions->iLoadMode :
                m_pInstrument->loadMode());
        m_ui.LoadModeComboBox->setCurrentIndex(iLoadMode);

        // Done.
        m_iDirtySetup--;
        stabilizeForm();
}


// Special case for name change,
void InstrumentForm::nameChanged ( const QString& /* sName */ )
{
        if (m_iDirtySetup > 0)
                return;

        m_iDirtyName++;
        changed();
}


// Browse and open an instrument file.
void InstrumentForm::openInstrumentFile (void)
{
        MainForm* pMainForm = MainForm::getInstance();
        if (pMainForm == NULL)
                return;

        Options *pOptions = pMainForm->options();
        if (pOptions == NULL)
                return;

        // FIXME: the instrument file filters should be restricted,
        // depending on the current engine.
        QStringList filters;
        filters << tr("GIG Instrument files") + " (*.gig *.dls)";
        filters << tr("SFZ Instrument files") + " (*.sfz)";
        filters << tr("SF2 Instrument files") + " (*.sf2)";
        filters << tr("All files") + " (*.*)";
        const QString& filter = filters.join(";;");

        QString sInstrumentFile = QFileDialog::getOpenFileName(this,
                QSAMPLER_TITLE ": " + tr("Instrument files"), // Caption.
                pOptions->sInstrumentDir, // Start here.
                filter                    // File filter.
        );

        if (sInstrumentFile.isEmpty())
                return;

        m_ui.InstrumentFileComboBox->setEditText(sInstrumentFile);
        updateInstrumentName();
}


// Refresh the actual instrument name.
void InstrumentForm::updateInstrumentName (void)
{
        MainForm* pMainForm = MainForm::getInstance();
        if (pMainForm == NULL)
                return;

        Options *pOptions = pMainForm->options();
        if (pOptions == NULL)
                return;

        // TODO: this better idea would be to use libgig
        // to retrieve the REAL instrument names.
        m_ui.InstrumentNrComboBox->clear();
        m_ui.InstrumentNrComboBox->insertItems(0,
                Channel::getInstrumentList(
                        m_ui.InstrumentFileComboBox->currentText(),
                        pOptions->bInstrumentNames)
        );

        instrumentNrChanged();
}


// Special case for instrumnet index change,
void InstrumentForm::instrumentNrChanged (void)
{
        if (m_iDirtySetup > 0)
                return;

        if (m_ui.NameLineEdit->text().isEmpty() || m_iDirtyName == 0) {
                m_ui.NameLineEdit->setText(m_ui.InstrumentNrComboBox->currentText());
                m_iDirtyName = 0;
        }

        changed();
}


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

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

        Options *pOptions = pMainForm->options();
        if (pOptions == NULL)
                return;

        if (m_iDirtyCount > 0) {
                m_pInstrument->setMap(m_ui.MapComboBox->currentIndex());
                m_pInstrument->setBank(m_ui.BankSpinBox->value());
                m_pInstrument->setProg(m_ui.ProgSpinBox->value() - 1);
                m_pInstrument->setName(m_ui.NameLineEdit->text());
                m_pInstrument->setEngineName(m_ui.EngineNameComboBox->currentText());
                m_pInstrument->setInstrumentFile(m_ui.InstrumentFileComboBox->currentText());
                m_pInstrument->setInstrumentNr(m_ui.InstrumentNrComboBox->currentIndex());
                m_pInstrument->setVolume(0.01f * float(m_ui.VolumeSpinBox->value()));
                m_pInstrument->setLoadMode(m_ui.LoadModeComboBox->currentIndex());
        }

        // Save default engine name, instrument directory and history...
        pOptions->sInstrumentDir = QFileInfo(
                m_ui.InstrumentFileComboBox->currentText()).dir().absolutePath();
        pOptions->sEngineName = m_ui.EngineNameComboBox->currentText();
        pOptions->iMidiMap  = m_ui.MapComboBox->currentIndex();
        pOptions->iMidiBank = m_ui.BankSpinBox->value();
        pOptions->iMidiProg = m_ui.ProgSpinBox->value();
        pOptions->iVolume   = m_ui.VolumeSpinBox->value();
        pOptions->iLoadMode = m_ui.LoadModeComboBox->currentIndex();
        pOptions->saveComboBoxHistory(m_ui.InstrumentFileComboBox);

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


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

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

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


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

        m_iDirtyCount++;
        stabilizeForm();
}


// Stabilize current form state.
void InstrumentForm::stabilizeForm (void)
{
        bool bValid = !m_ui.NameLineEdit->text().isEmpty()
                && m_ui.EngineNameComboBox->currentIndex() >= 0
                && m_ui.EngineNameComboBox->currentText() != Channel::noEngineName();

        const QString& sPath = m_ui.InstrumentFileComboBox->currentText();
        bValid = bValid && !sPath.isEmpty() && QFileInfo(sPath).exists();

        m_ui.DialogButtonBox->button(
                QDialogButtonBox::Ok)->setEnabled(m_iDirtyCount > 0 && bValid);
}

} // namespace QSampler


// end of qsamplerInstrumentForm.cpp
1	// qsamplerInstrumentForm.cpp
2	//
3	/****************************************************************************
4	Copyright (C) 2003-2010, 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
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 "qsamplerAbout.h"
24	#include "qsamplerInstrumentForm.h"
25
26	#include "qsamplerOptions.h"
27	#include "qsamplerChannel.h"
28	#include "qsamplerMainForm.h"
29
30	#include <QMessageBox>
31	#include <QPushButton>
32	#include <QFileDialog>
33
34	// 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
48	namespace QSampler {
49
50	//-------------------------------------------------------------------------
51	// QSampler::InstrumentForm -- Instrument map item form implementation.
52	//
53
54	InstrumentForm::InstrumentForm ( QWidget *pParent )
55	: QDialog(pParent)
56	{
57	m_ui.setupUi(this);
58
59	// Initialize locals.
60	m_pInstrument = NULL;
61
62	m_iDirtySetup = 0;
63	m_iDirtyCount = 0;
64	m_iDirtyName = 0;
65
66	// Try to restore normal window positioning.
67	adjustSize();
68
69
70	QObject::connect(m_ui.MapComboBox,
71	SIGNAL(activated(int)),
72	SLOT(changed()));
73	QObject::connect(m_ui.BankSpinBox,
74	SIGNAL(valueChanged(int)),
75	SLOT(changed()));
76	QObject::connect(m_ui.ProgSpinBox,
77	SIGNAL(valueChanged(int)),
78	SLOT(changed()));
79	QObject::connect(m_ui.NameLineEdit,
80	SIGNAL(textChanged(const QString&)),
81	SLOT(nameChanged(const QString&)));
82	QObject::connect(m_ui.EngineNameComboBox,
83	SIGNAL(activated(int)),
84	SLOT(changed()));
85	QObject::connect(m_ui.InstrumentFileComboBox,
86	SIGNAL(activated(const QString&)),
87	SLOT(updateInstrumentName()));
88	QObject::connect(m_ui.InstrumentFileToolButton,
89	SIGNAL(clicked()),
90	SLOT(openInstrumentFile()));
91	QObject::connect(m_ui.InstrumentNrComboBox,
92	SIGNAL(activated(int)),
93	SLOT(instrumentNrChanged()));
94	QObject::connect(m_ui.VolumeSpinBox,
95	SIGNAL(valueChanged(int)),
96	SLOT(changed()));
97	QObject::connect(m_ui.LoadModeComboBox,
98	SIGNAL(activated(int)),
99	SLOT(changed()));
100	QObject::connect(m_ui.DialogButtonBox,
101	SIGNAL(accepted()),
102	SLOT(accept()));
103	QObject::connect(m_ui.DialogButtonBox,
104	SIGNAL(rejected()),
105	SLOT(reject()));
106	}
107
108
109	InstrumentForm::~InstrumentForm (void)
110	{
111	}
112
113
114	// Channel dialog setup formal initializer.
115	void InstrumentForm::setup ( Instrument *pInstrument )
116	{
117	m_pInstrument = pInstrument;
118
119	m_iDirtySetup = 0;
120	m_iDirtyCount = 0;
121	m_iDirtyName = 0;
122
123	if (m_pInstrument == NULL)
124	return;
125
126	// Check if we're up and connected.
127	MainForm* pMainForm = MainForm::getInstance();
128	if (pMainForm == NULL)
129	return;
130	if (pMainForm->client() == NULL)
131	return;
132
133	Options *pOptions = pMainForm->options();
134	if (pOptions == NULL)
135	return;
136
137	// It can be a brand new channel, remember?
138	bool bNew = (m_pInstrument->bank() < 0 \|\| m_pInstrument->prog() < 0);
139	if (!bNew) {
140	m_pInstrument->getInstrument();
141	m_iDirtyName++;
142	}
143
144	// Avoid nested changes.
145	m_iDirtySetup++;
146
147	// Load combo box history...
148	pOptions->loadComboBoxHistory(m_ui.InstrumentFileComboBox);
149
150	// Populate maps list.
151	m_ui.MapComboBox->clear();
152	m_ui.MapComboBox->insertItems(0, Instrument::getMapNames());
153
154	// Populate Engines list.
155	const char **ppszEngines
156	= ::lscp_list_available_engines(pMainForm->client());
157	if (ppszEngines) {
158	m_ui.EngineNameComboBox->clear();
159	for (int iEngine = 0; ppszEngines[iEngine]; iEngine++)
160	m_ui.EngineNameComboBox->addItem(ppszEngines[iEngine]);
161	}
162	else pMainForm->appendMessagesClient("lscp_list_available_engines");
163
164	// Read proper instrument information,
165	// and populate the instrument form fields.
166
167	// Instrument map name...
168	int iMap = (bNew ? pOptions->iMidiMap : m_pInstrument->map());
169	if (iMap < 0)
170	iMap = 0;
171	const QString& sMapName = Instrument::getMapName(iMap);
172	if (!sMapName.isEmpty()) {
173	m_ui.MapComboBox->setCurrentIndex(
174	m_ui.MapComboBox->findText(sMapName,
175	Qt::MatchExactly \| Qt::MatchCaseSensitive));
176	}
177
178	// It might be no maps around...
179	bool bMapEnabled = (m_ui.MapComboBox->count() > 0);
180	m_ui.MapTextLabel->setEnabled(bMapEnabled);
181	m_ui.MapComboBox->setEnabled(bMapEnabled);
182
183	// Instrument bank/program...
184	int iBank = (bNew ? pOptions->iMidiBank : m_pInstrument->bank());
185	int iProg = (bNew ? pOptions->iMidiProg : m_pInstrument->prog()) + 1;
186	if (bNew && iProg > 128) {
187	iProg = 1;
188	iBank++;
189	}
190	m_ui.BankSpinBox->setValue(iBank);
191	m_ui.ProgSpinBox->setValue(iProg);
192
193	// Instrument name...
194	m_ui.NameLineEdit->setText(m_pInstrument->name());
195
196	// Engine name...
197	QString sEngineName = m_pInstrument->engineName();
198	if (sEngineName.isEmpty() \|\| bNew)
199	sEngineName = pOptions->sEngineName;
200	if (sEngineName.isEmpty())
201	sEngineName = Channel::noEngineName();
202	if (m_ui.EngineNameComboBox->findText(sEngineName,
203	Qt::MatchExactly \| Qt::MatchCaseSensitive) < 0) {
204	m_ui.EngineNameComboBox->addItem(sEngineName);
205	}
206	m_ui.EngineNameComboBox->setCurrentIndex(
207	m_ui.EngineNameComboBox->findText(sEngineName,
208	Qt::MatchExactly \| Qt::MatchCaseSensitive));
209
210	// Instrument filename and index...
211	QString sInstrumentFile = m_pInstrument->instrumentFile();
212	if (sInstrumentFile.isEmpty())
213	sInstrumentFile = Channel::noInstrumentName();
214	m_ui.InstrumentFileComboBox->setEditText(sInstrumentFile);
215	m_ui.InstrumentNrComboBox->clear();
216	m_ui.InstrumentNrComboBox->insertItems(0,
217	Channel::getInstrumentList(sInstrumentFile,
218	pOptions->bInstrumentNames));
219	m_ui.InstrumentNrComboBox->setCurrentIndex(m_pInstrument->instrumentNr());
220
221	// Instrument volume....
222	int iVolume = (bNew ? pOptions->iVolume :
223	::lroundf(100.0f * m_pInstrument->volume()));
224	m_ui.VolumeSpinBox->setValue(iVolume);
225
226	// Instrument load mode...
227	int iLoadMode = (bNew ? pOptions->iLoadMode :
228	m_pInstrument->loadMode());
229	m_ui.LoadModeComboBox->setCurrentIndex(iLoadMode);
230
231	// Done.
232	m_iDirtySetup--;
233	stabilizeForm();
234	}
235
236
237	// Special case for name change,
238	void InstrumentForm::nameChanged ( const QString& /* sName */ )
239	{
240	if (m_iDirtySetup > 0)
241	return;
242
243	m_iDirtyName++;
244	changed();
245	}
246
247
248	// Browse and open an instrument file.
249	void InstrumentForm::openInstrumentFile (void)
250	{
251	MainForm* pMainForm = MainForm::getInstance();
252	if (pMainForm == NULL)
253	return;
254
255	Options *pOptions = pMainForm->options();
256	if (pOptions == NULL)
257	return;
258
259	// FIXME: the instrument file filters should be restricted,
260	// depending on the current engine.
261	QStringList filters;
262	filters << tr("GIG Instrument files") + " (.gig .dls)";
263	filters << tr("SFZ Instrument files") + " (*.sfz)";
264	filters << tr("SF2 Instrument files") + " (*.sf2)";
265	filters << tr("All files") + " (.)";
266	const QString& filter = filters.join(";;");
267
268	QString sInstrumentFile = QFileDialog::getOpenFileName(this,
269	QSAMPLER_TITLE ": " + tr("Instrument files"), // Caption.
270	pOptions->sInstrumentDir, // Start here.
271	filter // File filter.
272	);
273
274	if (sInstrumentFile.isEmpty())
275	return;
276
277	m_ui.InstrumentFileComboBox->setEditText(sInstrumentFile);
278	updateInstrumentName();
279	}
280
281
282	// Refresh the actual instrument name.
283	void InstrumentForm::updateInstrumentName (void)
284	{
285	MainForm* pMainForm = MainForm::getInstance();
286	if (pMainForm == NULL)
287	return;
288
289	Options *pOptions = pMainForm->options();
290	if (pOptions == NULL)
291	return;
292
293	// TODO: this better idea would be to use libgig
294	// to retrieve the REAL instrument names.
295	m_ui.InstrumentNrComboBox->clear();
296	m_ui.InstrumentNrComboBox->insertItems(0,
297	Channel::getInstrumentList(
298	m_ui.InstrumentFileComboBox->currentText(),
299	pOptions->bInstrumentNames)
300	);
301
302	instrumentNrChanged();
303	}
304
305
306	// Special case for instrumnet index change,
307	void InstrumentForm::instrumentNrChanged (void)
308	{
309	if (m_iDirtySetup > 0)
310	return;
311
312	if (m_ui.NameLineEdit->text().isEmpty() \|\| m_iDirtyName == 0) {
313	m_ui.NameLineEdit->setText(m_ui.InstrumentNrComboBox->currentText());
314	m_iDirtyName = 0;
315	}
316
317	changed();
318	}
319
320
321	// Accept settings (OK button slot).
322	void InstrumentForm::accept (void)
323	{
324	if (m_pInstrument == NULL)
325	return;
326
327	MainForm* pMainForm = MainForm::getInstance();
328	if (pMainForm == NULL)
329	return;
330	if (pMainForm->client() == NULL)
331	return;
332
333	Options *pOptions = pMainForm->options();
334	if (pOptions == NULL)
335	return;
336
337	if (m_iDirtyCount > 0) {
338	m_pInstrument->setMap(m_ui.MapComboBox->currentIndex());
339	m_pInstrument->setBank(m_ui.BankSpinBox->value());
340	m_pInstrument->setProg(m_ui.ProgSpinBox->value() - 1);
341	m_pInstrument->setName(m_ui.NameLineEdit->text());
342	m_pInstrument->setEngineName(m_ui.EngineNameComboBox->currentText());
343	m_pInstrument->setInstrumentFile(m_ui.InstrumentFileComboBox->currentText());
344	m_pInstrument->setInstrumentNr(m_ui.InstrumentNrComboBox->currentIndex());
345	m_pInstrument->setVolume(0.01f * float(m_ui.VolumeSpinBox->value()));
346	m_pInstrument->setLoadMode(m_ui.LoadModeComboBox->currentIndex());
347	}
348
349	// Save default engine name, instrument directory and history...
350	pOptions->sInstrumentDir = QFileInfo(
351	m_ui.InstrumentFileComboBox->currentText()).dir().absolutePath();
352	pOptions->sEngineName = m_ui.EngineNameComboBox->currentText();
353	pOptions->iMidiMap = m_ui.MapComboBox->currentIndex();
354	pOptions->iMidiBank = m_ui.BankSpinBox->value();
355	pOptions->iMidiProg = m_ui.ProgSpinBox->value();
356	pOptions->iVolume = m_ui.VolumeSpinBox->value();
357	pOptions->iLoadMode = m_ui.LoadModeComboBox->currentIndex();
358	pOptions->saveComboBoxHistory(m_ui.InstrumentFileComboBox);
359
360	// Just go with dialog acceptance.
361	QDialog::accept();
362	}
363
364
365	// Reject settings (Cancel button slot).
366	void InstrumentForm::reject (void)
367	{
368	bool bReject = true;
369
370	// Check if there's any pending changes...
371	if (m_iDirtyCount > 0) {
372	switch (QMessageBox::warning(this,
373	QSAMPLER_TITLE ": " + tr("Warning"),
374	tr("Some channel settings have been changed.\n\n"
375	"Do you want to apply the changes?"),
376	QMessageBox::Apply \|
377	QMessageBox::Discard \|
378	QMessageBox::Cancel)) {
379	case QMessageBox::Apply:
380	accept();
381	return;
382	case QMessageBox::Discard:
383	break;
384	default: // Cancel.
385	bReject = false;
386	break;
387	}
388	}
389
390	if (bReject)
391	QDialog::reject();
392	}
393
394
395	// Dirty up settings.
396	void InstrumentForm::changed (void)
397	{
398	if (m_iDirtySetup > 0)
399	return;
400
401	m_iDirtyCount++;
402	stabilizeForm();
403	}
404
405
406	// Stabilize current form state.
407	void InstrumentForm::stabilizeForm (void)
408	{
409	bool bValid = !m_ui.NameLineEdit->text().isEmpty()
410	&& m_ui.EngineNameComboBox->currentIndex() >= 0
411	&& m_ui.EngineNameComboBox->currentText() != Channel::noEngineName();
412
413	const QString& sPath = m_ui.InstrumentFileComboBox->currentText();
414	bValid = bValid && !sPath.isEmpty() && QFileInfo(sPath).exists();
415
416	m_ui.DialogButtonBox->button(
417	QDialogButtonBox::Ok)->setEnabled(m_iDirtyCount > 0 && bValid);
418	}
419
420	} // namespace QSampler
421
422
423	// end of qsamplerInstrumentForm.cpp