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 "qsamplerInstrumentForm.h"

#include "qsamplerAbout.h"
#include "qsamplerMainForm.h"

#include <QFileDialog>
#include <QMessageBox>

// Needed for lroundf()
#include <math.h>


namespace QSampler {

#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

InstrumentForm::InstrumentForm ( QWidget* pParent )
        : QDialog(pParent)
{
    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(ui.MapComboBox,
                SIGNAL(activated(int)),
                SLOT(changed()));
        QObject::connect(ui.BankSpinBox,
                SIGNAL(valueChanged(int)),
                SLOT(changed()));
        QObject::connect(ui.ProgSpinBox,
                SIGNAL(valueChanged(int)),
                SLOT(changed()));
        QObject::connect(ui.NameLineEdit,
                SIGNAL(textChanged(const QString&)),
                SLOT(nameChanged(const QString&)));
        QObject::connect(ui.EngineNameComboBox,
                SIGNAL(activated(int)),
                SLOT(changed()));
        QObject::connect(ui.InstrumentFileComboBox,
                SIGNAL(activated(const QString&)),
                SLOT(updateInstrumentName()));
        QObject::connect(ui.InstrumentFileToolButton,
                SIGNAL(clicked()),
                SLOT(openInstrumentFile()));
        QObject::connect(ui.InstrumentNrComboBox,
                SIGNAL(activated(int)),
                SLOT(instrumentNrChanged()));
        QObject::connect(ui.VolumeSpinBox,
                SIGNAL(valueChanged(int)),
                SLOT(changed()));
        QObject::connect(ui.LoadModeComboBox,
                SIGNAL(activated(int)),
                SLOT(changed()));
        QObject::connect(ui.OkPushButton,
                SIGNAL(clicked()),
                SLOT(accept()));
        QObject::connect(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(ui.InstrumentFileComboBox);

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

        // Populate Engines list.
        const char **ppszEngines = ::lscp_list_available_engines(pMainForm->client());
        if (ppszEngines) {
                ui.EngineNameComboBox->clear();
                for (int iEngine = 0; ppszEngines[iEngine]; iEngine++)
                        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()) {
                ui.MapComboBox->setItemText(
                        ui.MapComboBox->currentIndex(),
                        sMapName);
        }
        // It might be no maps around...
        bool bMapEnabled = (ui.MapComboBox->count() > 0);
        ui.MapTextLabel->setEnabled(bMapEnabled);
        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++;
        }
        ui.BankSpinBox->setValue(iBank);
        ui.ProgSpinBox->setValue(iProg);

        // Instrument name...
        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 (ui.EngineNameComboBox->findText(sEngineName,
                        Qt::MatchExactly | Qt::MatchCaseSensitive) < 0) {
                ui.EngineNameComboBox->addItem(sEngineName);
        }
        ui.EngineNameComboBox->setCurrentIndex(
                ui.EngineNameComboBox->findText(sEngineName,
                        Qt::MatchExactly | Qt::MatchCaseSensitive));

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

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

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

        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.
        ui.InstrumentNrComboBox->clear();
        ui.InstrumentNrComboBox->insertItems(0,
                qsamplerChannel::getInstrumentList(
                        ui.InstrumentFileComboBox->currentText(),
                        pOptions->bInstrumentNames)
        );

        instrumentNrChanged();
}


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

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

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

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

        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	schoenebeck	1461	#include "qsamplerInstrumentForm.h"
24
25			#include "qsamplerAbout.h"
26			#include "qsamplerMainForm.h"
27
28	capela	1499	#include <QFileDialog>
29			#include <QMessageBox>
30
31	schoenebeck	1461	// Needed for lroundf()
32			#include <math.h>
33
34	capela	1499
35	schoenebeck	1461	namespace QSampler {
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	1504	InstrumentForm::InstrumentForm ( QWidget* pParent )
48			: QDialog(pParent)
49			{
50	schoenebeck	1461	ui.setupUi(this);
51
52			// Initialize locals.
53			m_pInstrument = NULL;
54
55			m_iDirtySetup = 0;
56			m_iDirtyCount = 0;
57			m_iDirtyName = 0;
58
59			// Try to restore normal window positioning.
60			adjustSize();
61	capela	1466
62
63			QObject::connect(ui.MapComboBox,
64			SIGNAL(activated(int)),
65			SLOT(changed()));
66			QObject::connect(ui.BankSpinBox,
67			SIGNAL(valueChanged(int)),
68			SLOT(changed()));
69			QObject::connect(ui.ProgSpinBox,
70			SIGNAL(valueChanged(int)),
71			SLOT(changed()));
72			QObject::connect(ui.NameLineEdit,
73	schoenebeck	1474	SIGNAL(textChanged(const QString&)),
74			SLOT(nameChanged(const QString&)));
75	capela	1466	QObject::connect(ui.EngineNameComboBox,
76			SIGNAL(activated(int)),
77			SLOT(changed()));
78			QObject::connect(ui.InstrumentFileComboBox,
79	schoenebeck	1474	SIGNAL(activated(const QString&)),
80	capela	1466	SLOT(updateInstrumentName()));
81			QObject::connect(ui.InstrumentFileToolButton,
82			SIGNAL(clicked()),
83			SLOT(openInstrumentFile()));
84			QObject::connect(ui.InstrumentNrComboBox,
85			SIGNAL(activated(int)),
86			SLOT(instrumentNrChanged()));
87			QObject::connect(ui.VolumeSpinBox,
88			SIGNAL(valueChanged(int)),
89			SLOT(changed()));
90			QObject::connect(ui.LoadModeComboBox,
91			SIGNAL(activated(int)),
92			SLOT(changed()));
93			QObject::connect(ui.OkPushButton,
94			SIGNAL(clicked()),
95			SLOT(accept()));
96			QObject::connect(ui.CancelPushButton,
97			SIGNAL(clicked()),
98			SLOT(reject()));
99	schoenebeck	1461	}
100
101	capela	1504
102			InstrumentForm::~InstrumentForm (void)
103			{
104	schoenebeck	1461	}
105
106	capela	1504
107	schoenebeck	1461	// Channel dialog setup formal initializer.
108			void InstrumentForm::setup ( qsamplerInstrument *pInstrument )
109			{
110			m_pInstrument = pInstrument;
111
112			m_iDirtySetup = 0;
113			m_iDirtyCount = 0;
114			m_iDirtyName = 0;
115
116			if (m_pInstrument == NULL)
117			return;
118
119			// Check if we're up and connected.
120			MainForm* pMainForm = MainForm::getInstance();
121			if (pMainForm == NULL)
122			return;
123			if (pMainForm->client() == NULL)
124			return;
125
126			qsamplerOptions *pOptions = pMainForm->options();
127			if (pOptions == NULL)
128			return;
129
130			// It can be a brand new channel, remember?
131			bool bNew = (m_pInstrument->bank() < 0 \|\| m_pInstrument->prog() < 0);
132			if (!bNew) {
133			m_pInstrument->getInstrument();
134			m_iDirtyName++;
135			}
136
137			// Avoid nested changes.
138			m_iDirtySetup++;
139
140			// Load combo box history...
141			pOptions->loadComboBoxHistory(ui.InstrumentFileComboBox);
142
143			// Populate maps list.
144			ui.MapComboBox->clear();
145	capela	1499	ui.MapComboBox->insertItems(0, qsamplerInstrument::getMapNames());
146	schoenebeck	1461
147			// Populate Engines list.
148			const char **ppszEngines = ::lscp_list_available_engines(pMainForm->client());
149			if (ppszEngines) {
150			ui.EngineNameComboBox->clear();
151			for (int iEngine = 0; ppszEngines[iEngine]; iEngine++)
152	capela	1499	ui.EngineNameComboBox->addItem(ppszEngines[iEngine]);
153	schoenebeck	1461	}
154			else pMainForm->appendMessagesClient("lscp_list_available_engines");
155
156			// Read proper instrument information,
157			// and populate the instrument form fields.
158
159			// Instrument map name...
160			int iMap = (bNew ? pOptions->iMidiMap : m_pInstrument->map());
161			if (iMap < 0)
162			iMap = 0;
163			const QString& sMapName = qsamplerInstrument::getMapName(iMap);
164	capela	1499	if (!sMapName.isEmpty()) {
165			ui.MapComboBox->setItemText(
166			ui.MapComboBox->currentIndex(),
167			sMapName);
168			}
169	schoenebeck	1461	// It might be no maps around...
170			bool bMapEnabled = (ui.MapComboBox->count() > 0);
171			ui.MapTextLabel->setEnabled(bMapEnabled);
172			ui.MapComboBox->setEnabled(bMapEnabled);
173
174			// Instrument bank/program...
175			int iBank = (bNew ? pOptions->iMidiBank : m_pInstrument->bank());
176			int iProg = (bNew ? pOptions->iMidiProg : m_pInstrument->prog()) + 1;
177			if (bNew && iProg > 128) {
178			iProg = 1;
179			iBank++;
180			}
181			ui.BankSpinBox->setValue(iBank);
182			ui.ProgSpinBox->setValue(iProg);
183
184			// Instrument name...
185			ui.NameLineEdit->setText(m_pInstrument->name());
186
187			// Engine name...
188			QString sEngineName = m_pInstrument->engineName();
189			if (sEngineName.isEmpty() \|\| bNew)
190			sEngineName = pOptions->sEngineName;
191			if (sEngineName.isEmpty())
192			sEngineName = qsamplerChannel::noEngineName();
193			if (ui.EngineNameComboBox->findText(sEngineName,
194	schoenebeck	1474	Qt::MatchExactly \| Qt::MatchCaseSensitive) < 0) {
195	capela	1499	ui.EngineNameComboBox->addItem(sEngineName);
196	schoenebeck	1461	}
197	capela	1504	ui.EngineNameComboBox->setCurrentIndex(
198			ui.EngineNameComboBox->findText(sEngineName,
199			Qt::MatchExactly \| Qt::MatchCaseSensitive));
200
201	schoenebeck	1461	// Instrument filename and index...
202			QString sInstrumentFile = m_pInstrument->instrumentFile();
203			if (sInstrumentFile.isEmpty())
204			sInstrumentFile = qsamplerChannel::noInstrumentName();
205	capela	1505	ui.InstrumentFileComboBox->setEditText(sInstrumentFile);
206	schoenebeck	1461	ui.InstrumentNrComboBox->clear();
207	capela	1499	ui.InstrumentNrComboBox->insertItems(0,
208	schoenebeck	1461	qsamplerChannel::getInstrumentList(sInstrumentFile,
209			pOptions->bInstrumentNames));
210	capela	1499	ui.InstrumentNrComboBox->setCurrentIndex(m_pInstrument->instrumentNr());
211	schoenebeck	1461
212			// Instrument volume....
213			int iVolume = (bNew ? pOptions->iVolume :
214			::lroundf(100.0f * m_pInstrument->volume()));
215			ui.VolumeSpinBox->setValue(iVolume);
216
217			// Instrument load mode...
218			int iLoadMode = (bNew ? pOptions->iLoadMode :
219			m_pInstrument->loadMode());
220	capela	1499	ui.LoadModeComboBox->setCurrentIndex(iLoadMode);
221	schoenebeck	1461
222			// Done.
223			m_iDirtySetup--;
224			stabilizeForm();
225
226			// Done.
227			m_iDirtySetup--;
228			stabilizeForm();
229			}
230
231
232			// Special case for name change,
233			void InstrumentForm::nameChanged ( const QString& /* sName */ )
234			{
235			if (m_iDirtySetup > 0)
236			return;
237
238			m_iDirtyName++;
239			changed();
240			}
241
242
243			// Browse and open an instrument file.
244			void InstrumentForm::openInstrumentFile (void)
245			{
246			MainForm* pMainForm = MainForm::getInstance();
247			if (pMainForm == NULL)
248			return;
249
250			qsamplerOptions *pOptions = pMainForm->options();
251			if (pOptions == NULL)
252			return;
253
254			// FIXME: the instrument file filters should be restricted,
255			// depending on the current engine.
256	capela	1499	QString sInstrumentFile = QFileDialog::getOpenFileName(this,
257			QSAMPLER_TITLE ": " + tr("Instrument files"), // Caption.
258			pOptions->sInstrumentDir, // Start here.
259			tr("Instrument files") + " (.gig .dls)" // Filter (GIG and DLS files)
260	schoenebeck	1461	);
261
262			if (sInstrumentFile.isEmpty())
263			return;
264
265	capela	1505	ui.InstrumentFileComboBox->setEditText(sInstrumentFile);
266	schoenebeck	1461	updateInstrumentName();
267			}
268
269
270			// Refresh the actual instrument name.
271			void InstrumentForm::updateInstrumentName (void)
272			{
273			MainForm* pMainForm = MainForm::getInstance();
274			if (pMainForm == NULL)
275			return;
276
277			qsamplerOptions *pOptions = pMainForm->options();
278			if (pOptions == NULL)
279			return;
280
281			// TODO: this better idea would be to use libgig
282			// to retrieve the REAL instrument names.
283			ui.InstrumentNrComboBox->clear();
284	capela	1499	ui.InstrumentNrComboBox->insertItems(0,
285	schoenebeck	1461	qsamplerChannel::getInstrumentList(
286			ui.InstrumentFileComboBox->currentText(),
287			pOptions->bInstrumentNames)
288			);
289
290			instrumentNrChanged();
291			}
292
293
294			// Special case for instrumnet index change,
295			void InstrumentForm::instrumentNrChanged (void)
296			{
297			if (m_iDirtySetup > 0)
298			return;
299
300			if (ui.NameLineEdit->text().isEmpty() \|\| m_iDirtyName == 0) {
301			ui.NameLineEdit->setText(ui.InstrumentNrComboBox->currentText());
302			m_iDirtyName = 0;
303			}
304
305			changed();
306			}
307
308
309			// Accept settings (OK button slot).
310			void InstrumentForm::accept (void)
311			{
312			if (m_pInstrument == NULL)
313			return;
314
315			MainForm* pMainForm = MainForm::getInstance();
316			if (pMainForm == NULL)
317			return;
318			if (pMainForm->client() == NULL)
319			return;
320
321			qsamplerOptions *pOptions = pMainForm->options();
322			if (pOptions == NULL)
323			return;
324
325			if (m_iDirtyCount > 0) {
326	capela	1499	m_pInstrument->setMap(ui.MapComboBox->currentIndex());
327	schoenebeck	1461	m_pInstrument->setBank(ui.BankSpinBox->value());
328			m_pInstrument->setProg(ui.ProgSpinBox->value() - 1);
329			m_pInstrument->setName(ui.NameLineEdit->text());
330			m_pInstrument->setEngineName(ui.EngineNameComboBox->currentText());
331			m_pInstrument->setInstrumentFile(ui.InstrumentFileComboBox->currentText());
332	capela	1499	m_pInstrument->setInstrumentNr(ui.InstrumentNrComboBox->currentIndex());
333	schoenebeck	1461	m_pInstrument->setVolume(0.01f * float(ui.VolumeSpinBox->value()));
334	capela	1499	m_pInstrument->setLoadMode(ui.LoadModeComboBox->currentIndex());
335	schoenebeck	1461	}
336
337			// Save default engine name, instrument directory and history...
338	capela	1499	pOptions->sInstrumentDir = QFileInfo(
339			ui.InstrumentFileComboBox->currentText()).dir().absolutePath();
340	schoenebeck	1461	pOptions->sEngineName = ui.EngineNameComboBox->currentText();
341	capela	1499	pOptions->iMidiMap = ui.MapComboBox->currentIndex();
342	schoenebeck	1461	pOptions->iMidiBank = ui.BankSpinBox->value();
343			pOptions->iMidiProg = ui.ProgSpinBox->value();
344			pOptions->iVolume = ui.VolumeSpinBox->value();
345	capela	1499	pOptions->iLoadMode = ui.LoadModeComboBox->currentIndex();
346	schoenebeck	1461	pOptions->saveComboBoxHistory(ui.InstrumentFileComboBox);
347
348			// Just go with dialog acceptance.
349			QDialog::accept();
350			}
351
352
353			// Reject settings (Cancel button slot).
354			void InstrumentForm::reject (void)
355			{
356			bool bReject = true;
357
358			// Check if there's any pending changes...
359			if (m_iDirtyCount > 0 && ui.OkPushButton->isEnabled()) {
360			switch (QMessageBox::warning(this,
361			QSAMPLER_TITLE ": " + tr("Warning"),
362			tr("Some channel settings have been changed.\n\n"
363			"Do you want to apply the changes?"),
364			tr("Apply"), tr("Discard"), tr("Cancel"))) {
365			case 0: // Apply...
366			accept();
367			return;
368			case 1: // Discard
369			break;
370			default: // Cancel.
371			bReject = false;
372			break;
373			}
374			}
375
376			if (bReject)
377			QDialog::reject();
378			}
379
380
381			// Dirty up settings.
382			void InstrumentForm::changed (void)
383			{
384			if (m_iDirtySetup > 0)
385			return;
386
387			m_iDirtyCount++;
388			stabilizeForm();
389			}
390
391
392			// Stabilize current form state.
393			void InstrumentForm::stabilizeForm (void)
394			{
395			bool bValid = !ui.NameLineEdit->text().isEmpty();
396
397			const QString& sPath = ui.InstrumentFileComboBox->currentText();
398			bValid = bValid && !sPath.isEmpty() && QFileInfo(sPath).exists();
399
400			ui.OkPushButton->setEnabled(m_iDirtyCount > 0 && bValid);
401			}
402
403			} // namespace QSampler
404	capela	1464
405
406			// end of qsamplerInstrumentForm.cpp