trunk/src/qsamplerInstrumentForm.cpp

// qsamplerInstrumentForm.cpp
//
/****************************************************************************
   Copyright (C) 2003-2007, 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., 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 <QFileDialog>
#include <QMessageBox>

// 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 {

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.OkPushButton,
                SIGNAL(clicked()),
                SLOT(accept()));
        QObject::connect(m_ui.CancelPushButton,
                SIGNAL(clicked()),
                SLOT(reject()));
}


InstrumentForm::~InstrumentForm (void)
{
}


// Channel dialog setup formal initializer.
void InstrumentForm::setup ( qsamplerInstrument *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;

        qsamplerOptions *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, qsamplerInstrument::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 = qsamplerInstrument::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 = qsamplerChannel::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 = qsamplerChannel::noInstrumentName();
        m_ui.InstrumentFileComboBox->setEditText(sInstrumentFile);
        m_ui.InstrumentNrComboBox->clear();
        m_ui.InstrumentNrComboBox->insertItems(0,
                qsamplerChannel::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();

        // 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;

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

        // FIXME: the instrument file filters should be restricted,
        // depending on the current engine.
        QString sInstrumentFile = QFileDialog::getOpenFileName(this,
                QSAMPLER_TITLE ": " + tr("Instrument files"), // Caption.
                pOptions->sInstrumentDir,                 // Start here.
                tr("Instrument files") + " (*.gig *.dls)" // Filter (GIG and DLS files)
        );

        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;

        qsamplerOptions *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,
                qsamplerChannel::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;

        qsamplerOptions *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 && m_ui.OkPushButton->isEnabled()) {
                switch (QMessageBox::warning(this,
                        QSAMPLER_TITLE ": " + 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;
                        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() !=
                qsamplerChannel::noEngineName();

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

        m_ui.OkPushButton->setEnabled(m_iDirtyCount > 0 && bValid);
}

} // namespace QSampler


// end of qsamplerInstrumentForm.cpp
1	capela	1464	// qsamplerInstrumentForm.cpp
2			//
3			/****************************************************************************
4			Copyright (C) 2003-2007, 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
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	capela	1513	#include "qsamplerAbout.h"
24	schoenebeck	1461	#include "qsamplerInstrumentForm.h"
25
26	capela	1513	#include "qsamplerOptions.h"
27			#include "qsamplerChannel.h"
28	schoenebeck	1461	#include "qsamplerMainForm.h"
29
30	capela	1499	#include <QFileDialog>
31			#include <QMessageBox>
32
33	schoenebeck	1461	// Needed for lroundf()
34			#include <math.h>
35
36			#ifndef CONFIG_ROUND
37			static inline long lroundf ( float x )
38			{
39			if (x >= 0.0f)
40			return long(x + 0.5f);
41			else
42			return long(x - 0.5f);
43			}
44			#endif
45
46	capela	1514
47			namespace QSampler {
48
49	capela	1504	InstrumentForm::InstrumentForm ( QWidget* pParent )
50			: QDialog(pParent)
51			{
52	capela	1509	m_ui.setupUi(this);
53	schoenebeck	1461
54			// Initialize locals.
55			m_pInstrument = NULL;
56
57			m_iDirtySetup = 0;
58			m_iDirtyCount = 0;
59			m_iDirtyName = 0;
60
61			// Try to restore normal window positioning.
62			adjustSize();
63	capela	1466
64
65	capela	1509	QObject::connect(m_ui.MapComboBox,
66	capela	1466	SIGNAL(activated(int)),
67			SLOT(changed()));
68	capela	1509	QObject::connect(m_ui.BankSpinBox,
69	capela	1466	SIGNAL(valueChanged(int)),
70			SLOT(changed()));
71	capela	1509	QObject::connect(m_ui.ProgSpinBox,
72	capela	1466	SIGNAL(valueChanged(int)),
73			SLOT(changed()));
74	capela	1509	QObject::connect(m_ui.NameLineEdit,
75	schoenebeck	1474	SIGNAL(textChanged(const QString&)),
76			SLOT(nameChanged(const QString&)));
77	capela	1509	QObject::connect(m_ui.EngineNameComboBox,
78	capela	1466	SIGNAL(activated(int)),
79			SLOT(changed()));
80	capela	1509	QObject::connect(m_ui.InstrumentFileComboBox,
81	schoenebeck	1474	SIGNAL(activated(const QString&)),
82	capela	1466	SLOT(updateInstrumentName()));
83	capela	1509	QObject::connect(m_ui.InstrumentFileToolButton,
84	capela	1466	SIGNAL(clicked()),
85			SLOT(openInstrumentFile()));
86	capela	1509	QObject::connect(m_ui.InstrumentNrComboBox,
87	capela	1466	SIGNAL(activated(int)),
88			SLOT(instrumentNrChanged()));
89	capela	1509	QObject::connect(m_ui.VolumeSpinBox,
90	capela	1466	SIGNAL(valueChanged(int)),
91			SLOT(changed()));
92	capela	1509	QObject::connect(m_ui.LoadModeComboBox,
93	capela	1466	SIGNAL(activated(int)),
94			SLOT(changed()));
95	capela	1509	QObject::connect(m_ui.OkPushButton,
96	capela	1466	SIGNAL(clicked()),
97			SLOT(accept()));
98	capela	1509	QObject::connect(m_ui.CancelPushButton,
99	capela	1466	SIGNAL(clicked()),
100			SLOT(reject()));
101	schoenebeck	1461	}
102
103	capela	1504
104			InstrumentForm::~InstrumentForm (void)
105			{
106	schoenebeck	1461	}
107
108	capela	1504
109	schoenebeck	1461	// Channel dialog setup formal initializer.
110			void InstrumentForm::setup ( qsamplerInstrument *pInstrument )
111			{
112			m_pInstrument = pInstrument;
113
114			m_iDirtySetup = 0;
115			m_iDirtyCount = 0;
116			m_iDirtyName = 0;
117
118			if (m_pInstrument == NULL)
119			return;
120
121			// Check if we're up and connected.
122			MainForm* pMainForm = MainForm::getInstance();
123			if (pMainForm == NULL)
124			return;
125			if (pMainForm->client() == NULL)
126			return;
127
128			qsamplerOptions *pOptions = pMainForm->options();
129			if (pOptions == NULL)
130			return;
131
132			// It can be a brand new channel, remember?
133			bool bNew = (m_pInstrument->bank() < 0 \|\| m_pInstrument->prog() < 0);
134			if (!bNew) {
135			m_pInstrument->getInstrument();
136			m_iDirtyName++;
137			}
138
139			// Avoid nested changes.
140			m_iDirtySetup++;
141
142			// Load combo box history...
143	capela	1509	pOptions->loadComboBoxHistory(m_ui.InstrumentFileComboBox);
144	schoenebeck	1461
145			// Populate maps list.
146	capela	1509	m_ui.MapComboBox->clear();
147			m_ui.MapComboBox->insertItems(0, qsamplerInstrument::getMapNames());
148	schoenebeck	1461
149			// Populate Engines list.
150	capela	1509	const char **ppszEngines
151			= ::lscp_list_available_engines(pMainForm->client());
152	schoenebeck	1461	if (ppszEngines) {
153	capela	1509	m_ui.EngineNameComboBox->clear();
154	schoenebeck	1461	for (int iEngine = 0; ppszEngines[iEngine]; iEngine++)
155	capela	1509	m_ui.EngineNameComboBox->addItem(ppszEngines[iEngine]);
156	schoenebeck	1461	}
157			else pMainForm->appendMessagesClient("lscp_list_available_engines");
158
159			// Read proper instrument information,
160			// and populate the instrument form fields.
161
162			// Instrument map name...
163			int iMap = (bNew ? pOptions->iMidiMap : m_pInstrument->map());
164			if (iMap < 0)
165			iMap = 0;
166			const QString& sMapName = qsamplerInstrument::getMapName(iMap);
167	capela	1499	if (!sMapName.isEmpty()) {
168	capela	1526	m_ui.MapComboBox->setCurrentIndex(
169			m_ui.MapComboBox->findText(sMapName,
170			Qt::MatchExactly \| Qt::MatchCaseSensitive));
171	capela	1499	}
172	capela	1526
173	schoenebeck	1461	// It might be no maps around...
174	capela	1509	bool bMapEnabled = (m_ui.MapComboBox->count() > 0);
175			m_ui.MapTextLabel->setEnabled(bMapEnabled);
176			m_ui.MapComboBox->setEnabled(bMapEnabled);
177	schoenebeck	1461
178			// Instrument bank/program...
179			int iBank = (bNew ? pOptions->iMidiBank : m_pInstrument->bank());
180			int iProg = (bNew ? pOptions->iMidiProg : m_pInstrument->prog()) + 1;
181			if (bNew && iProg > 128) {
182			iProg = 1;
183			iBank++;
184			}
185	capela	1509	m_ui.BankSpinBox->setValue(iBank);
186			m_ui.ProgSpinBox->setValue(iProg);
187	schoenebeck	1461
188			// Instrument name...
189	capela	1509	m_ui.NameLineEdit->setText(m_pInstrument->name());
190	schoenebeck	1461
191			// Engine name...
192			QString sEngineName = m_pInstrument->engineName();
193			if (sEngineName.isEmpty() \|\| bNew)
194			sEngineName = pOptions->sEngineName;
195			if (sEngineName.isEmpty())
196			sEngineName = qsamplerChannel::noEngineName();
197	capela	1509	if (m_ui.EngineNameComboBox->findText(sEngineName,
198	schoenebeck	1474	Qt::MatchExactly \| Qt::MatchCaseSensitive) < 0) {
199	capela	1509	m_ui.EngineNameComboBox->addItem(sEngineName);
200	schoenebeck	1461	}
201	capela	1509	m_ui.EngineNameComboBox->setCurrentIndex(
202			m_ui.EngineNameComboBox->findText(sEngineName,
203	capela	1504	Qt::MatchExactly \| Qt::MatchCaseSensitive));
204
205	schoenebeck	1461	// Instrument filename and index...
206			QString sInstrumentFile = m_pInstrument->instrumentFile();
207			if (sInstrumentFile.isEmpty())
208			sInstrumentFile = qsamplerChannel::noInstrumentName();
209	capela	1509	m_ui.InstrumentFileComboBox->setEditText(sInstrumentFile);
210			m_ui.InstrumentNrComboBox->clear();
211			m_ui.InstrumentNrComboBox->insertItems(0,
212	schoenebeck	1461	qsamplerChannel::getInstrumentList(sInstrumentFile,
213			pOptions->bInstrumentNames));
214	capela	1509	m_ui.InstrumentNrComboBox->setCurrentIndex(m_pInstrument->instrumentNr());
215	schoenebeck	1461
216			// Instrument volume....
217			int iVolume = (bNew ? pOptions->iVolume :
218			::lroundf(100.0f * m_pInstrument->volume()));
219	capela	1509	m_ui.VolumeSpinBox->setValue(iVolume);
220	schoenebeck	1461
221			// Instrument load mode...
222			int iLoadMode = (bNew ? pOptions->iLoadMode :
223			m_pInstrument->loadMode());
224	capela	1509	m_ui.LoadModeComboBox->setCurrentIndex(iLoadMode);
225	schoenebeck	1461
226			// Done.
227			m_iDirtySetup--;
228			stabilizeForm();
229
230			// Done.
231			m_iDirtySetup--;
232			stabilizeForm();
233			}
234
235
236			// Special case for name change,
237			void InstrumentForm::nameChanged ( const QString& /* sName */ )
238			{
239			if (m_iDirtySetup > 0)
240			return;
241
242			m_iDirtyName++;
243			changed();
244			}
245
246
247			// Browse and open an instrument file.
248			void InstrumentForm::openInstrumentFile (void)
249			{
250			MainForm* pMainForm = MainForm::getInstance();
251			if (pMainForm == NULL)
252			return;
253
254			qsamplerOptions *pOptions = pMainForm->options();
255			if (pOptions == NULL)
256			return;
257
258			// FIXME: the instrument file filters should be restricted,
259			// depending on the current engine.
260	capela	1499	QString sInstrumentFile = QFileDialog::getOpenFileName(this,
261			QSAMPLER_TITLE ": " + tr("Instrument files"), // Caption.
262			pOptions->sInstrumentDir, // Start here.
263			tr("Instrument files") + " (.gig .dls)" // Filter (GIG and DLS files)
264	schoenebeck	1461	);
265
266			if (sInstrumentFile.isEmpty())
267			return;
268
269	capela	1509	m_ui.InstrumentFileComboBox->setEditText(sInstrumentFile);
270	schoenebeck	1461	updateInstrumentName();
271			}
272
273
274			// Refresh the actual instrument name.
275			void InstrumentForm::updateInstrumentName (void)
276			{
277			MainForm* pMainForm = MainForm::getInstance();
278			if (pMainForm == NULL)
279			return;
280
281			qsamplerOptions *pOptions = pMainForm->options();
282			if (pOptions == NULL)
283			return;
284
285			// TODO: this better idea would be to use libgig
286			// to retrieve the REAL instrument names.
287	capela	1509	m_ui.InstrumentNrComboBox->clear();
288			m_ui.InstrumentNrComboBox->insertItems(0,
289	schoenebeck	1461	qsamplerChannel::getInstrumentList(
290	capela	1509	m_ui.InstrumentFileComboBox->currentText(),
291	schoenebeck	1461	pOptions->bInstrumentNames)
292			);
293
294			instrumentNrChanged();
295			}
296
297
298			// Special case for instrumnet index change,
299			void InstrumentForm::instrumentNrChanged (void)
300			{
301			if (m_iDirtySetup > 0)
302			return;
303
304	capela	1509	if (m_ui.NameLineEdit->text().isEmpty() \|\| m_iDirtyName == 0) {
305			m_ui.NameLineEdit->setText(m_ui.InstrumentNrComboBox->currentText());
306	schoenebeck	1461	m_iDirtyName = 0;
307			}
308
309			changed();
310			}
311
312
313			// Accept settings (OK button slot).
314			void InstrumentForm::accept (void)
315			{
316			if (m_pInstrument == NULL)
317			return;
318
319			MainForm* pMainForm = MainForm::getInstance();
320			if (pMainForm == NULL)
321			return;
322			if (pMainForm->client() == NULL)
323			return;
324
325			qsamplerOptions *pOptions = pMainForm->options();
326			if (pOptions == NULL)
327			return;
328
329			if (m_iDirtyCount > 0) {
330	capela	1509	m_pInstrument->setMap(m_ui.MapComboBox->currentIndex());
331			m_pInstrument->setBank(m_ui.BankSpinBox->value());
332			m_pInstrument->setProg(m_ui.ProgSpinBox->value() - 1);
333			m_pInstrument->setName(m_ui.NameLineEdit->text());
334			m_pInstrument->setEngineName(m_ui.EngineNameComboBox->currentText());
335			m_pInstrument->setInstrumentFile(m_ui.InstrumentFileComboBox->currentText());
336			m_pInstrument->setInstrumentNr(m_ui.InstrumentNrComboBox->currentIndex());
337			m_pInstrument->setVolume(0.01f * float(m_ui.VolumeSpinBox->value()));
338			m_pInstrument->setLoadMode(m_ui.LoadModeComboBox->currentIndex());
339	schoenebeck	1461	}
340
341			// Save default engine name, instrument directory and history...
342	capela	1499	pOptions->sInstrumentDir = QFileInfo(
343	capela	1509	m_ui.InstrumentFileComboBox->currentText()).dir().absolutePath();
344			pOptions->sEngineName = m_ui.EngineNameComboBox->currentText();
345			pOptions->iMidiMap = m_ui.MapComboBox->currentIndex();
346			pOptions->iMidiBank = m_ui.BankSpinBox->value();
347			pOptions->iMidiProg = m_ui.ProgSpinBox->value();
348			pOptions->iVolume = m_ui.VolumeSpinBox->value();
349			pOptions->iLoadMode = m_ui.LoadModeComboBox->currentIndex();
350			pOptions->saveComboBoxHistory(m_ui.InstrumentFileComboBox);
351	schoenebeck	1461
352			// Just go with dialog acceptance.
353			QDialog::accept();
354			}
355
356
357			// Reject settings (Cancel button slot).
358			void InstrumentForm::reject (void)
359			{
360			bool bReject = true;
361
362			// Check if there's any pending changes...
363	capela	1509	if (m_iDirtyCount > 0 && m_ui.OkPushButton->isEnabled()) {
364	schoenebeck	1461	switch (QMessageBox::warning(this,
365			QSAMPLER_TITLE ": " + tr("Warning"),
366			tr("Some channel settings have been changed.\n\n"
367			"Do you want to apply the changes?"),
368			tr("Apply"), tr("Discard"), tr("Cancel"))) {
369			case 0: // Apply...
370			accept();
371			return;
372			case 1: // Discard
373			break;
374			default: // Cancel.
375			bReject = false;
376			break;
377			}
378			}
379
380			if (bReject)
381			QDialog::reject();
382			}
383
384
385			// Dirty up settings.
386			void InstrumentForm::changed (void)
387			{
388			if (m_iDirtySetup > 0)
389			return;
390
391			m_iDirtyCount++;
392			stabilizeForm();
393			}
394
395
396			// Stabilize current form state.
397			void InstrumentForm::stabilizeForm (void)
398			{
399	schoenebeck	1506	bool bValid =
400	capela	1509	!m_ui.NameLineEdit->text().isEmpty() &&
401			m_ui.EngineNameComboBox->currentIndex() >= 0 &&
402			m_ui.EngineNameComboBox->currentText() !=
403	schoenebeck	1506	qsamplerChannel::noEngineName();
404	schoenebeck	1461
405	capela	1509	const QString& sPath = m_ui.InstrumentFileComboBox->currentText();
406	schoenebeck	1461	bValid = bValid && !sPath.isEmpty() && QFileInfo(sPath).exists();
407
408	capela	1509	m_ui.OkPushButton->setEnabled(m_iDirtyCount > 0 && bValid);
409	schoenebeck	1461	}
410
411			} // namespace QSampler
412	capela	1464
413
414			// end of qsamplerInstrumentForm.cpp