/[svn]/qsampler/trunk/src/qsamplerChannelForm.ui.h
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Contents of /qsampler/trunk/src/qsamplerChannelForm.ui.h

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Revision 176 - (show annotations) (download) (as text)
Tue Jul 6 10:54:45 2004 UTC (15 years, 9 months ago) by capela
File MIME type: text/x-c++hdr
File size: 9502 byte(s)
* Channel dialog gets sensible engine and driver defaults
  on create time.

* Implied channel reset on successful instrument load.

1 // qsamplerChannelForm.ui.h
2 //
3 // ui.h extension file, included from the uic-generated form implementation.
4 /****************************************************************************
5 Copyright (C) 2004, 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 "qsamplerOptions.h"
30 #include "qsamplerChannelStrip.h"
31
32 #include "config.h"
33
34
35 // Kind of constructor.
36 void qsamplerChannelForm::init (void)
37 {
38 // Initialize locals.
39 m_pChannel = NULL;
40
41 m_iDirtySetup = 0;
42 m_iDirtyCount = 0;
43
44 // Try to restore normal window positioning.
45 adjustSize();
46 }
47
48
49 // Kind of destructor.
50 void qsamplerChannelForm::destroy (void)
51 {
52 }
53
54
55 // Channel dialog setup formal initializer.
56 void qsamplerChannelForm::setup ( qsamplerChannelStrip *pChannel, bool bNew )
57 {
58 m_pChannel = pChannel;
59
60 m_iDirtySetup = 0;
61 m_iDirtyCount = 0;
62
63 if (m_pChannel == NULL)
64 return;
65
66 setCaption(m_pChannel->caption());
67
68 // Check if we're up and connected.
69 if (m_pChannel->client() == NULL)
70 return;
71
72 qsamplerOptions *pOptions = m_pChannel->options();
73 if (pOptions == NULL)
74 return;
75
76 // Avoid nested changes.
77 m_iDirtySetup++;
78
79 // Load combo box history...
80 pOptions->loadComboBoxHistory(InstrumentFileComboBox);
81
82 // Populate Engines list.
83 const char **ppszEngines = ::lscp_get_available_engines(m_pChannel->client());
84 if (ppszEngines) {
85 EngineNameComboBox->clear();
86 for (int iEngine = 0; ppszEngines[iEngine]; iEngine++)
87 EngineNameComboBox->insertItem(ppszEngines[iEngine]);
88 }
89 else m_pChannel->appendMessagesClient("lscp_get_available_engines");
90
91 // Populate Audio output type list.
92 const char **ppszAudioDrivers = ::lscp_get_available_audio_drivers(m_pChannel->client());
93 if (ppszAudioDrivers) {
94 AudioDriverComboBox->clear();
95 for (int iAudioDriver = 0; ppszAudioDrivers[iAudioDriver]; iAudioDriver++)
96 AudioDriverComboBox->insertItem(ppszAudioDrivers[iAudioDriver]);
97 }
98 else m_pChannel->appendMessagesClient("lscp_get_available_audio_drivers");
99
100 // Populate MIDI input type list.
101 const char **ppszMidiDrivers = ::lscp_get_available_midi_drivers(m_pChannel->client());
102 if (ppszMidiDrivers) {
103 MidiDriverComboBox->clear();
104 for (int iMidiDriver = 0; ppszMidiDrivers[iMidiDriver]; iMidiDriver++)
105 MidiDriverComboBox->insertItem(ppszMidiDrivers[iMidiDriver]);
106 }
107 else m_pChannel->appendMessagesClient("lscp_get_available_midi_drivers");
108
109 // Read proper channel information,
110 // and populate the channel form fields.
111
112 // Engine name...
113 QString sEngineName = pChannel->engineName();
114 if (sEngineName.isEmpty() && bNew)
115 sEngineName = pOptions->sEngineName;
116 if (sEngineName.isEmpty())
117 sEngineName = tr("(No engine)");
118 if (EngineNameComboBox->listBox()->findItem(sEngineName, Qt::ExactMatch) == NULL)
119 EngineNameComboBox->insertItem(sEngineName);
120 EngineNameComboBox->setCurrentText(sEngineName);
121 // Instrument filename and index...
122 QString sInstrumentFile = pChannel->instrumentFile();
123 if (sInstrumentFile.isEmpty())
124 sInstrumentFile = tr("(No instrument)");
125 InstrumentFileComboBox->setCurrentText(sInstrumentFile);
126 InstrumentNrSpinBox->setValue(pChannel->instrumentNr());
127 // MIDI input driver...
128 QString sMidiDriver = pChannel->midiDriver();
129 if (sMidiDriver.isEmpty() && bNew)
130 sMidiDriver = pOptions->sMidiDriver;
131 if (!sMidiDriver.isEmpty()) {
132 if (MidiDriverComboBox->listBox()->findItem(sMidiDriver, Qt::ExactMatch) == NULL)
133 MidiDriverComboBox->insertItem(sMidiDriver);
134 MidiDriverComboBox->setCurrentText(sMidiDriver);
135 }
136 // MIDI input port...
137 MidiPortSpinBox->setValue(pChannel->midiPort());
138 // MIDI input channel...
139 int iMidiChannel = pChannel->midiChannel();
140 if (bNew)
141 iMidiChannel = (pChannel->channelID() + 1) % 16;
142 MidiChannelSpinBox->setValue(iMidiChannel);
143 // Audio output driver...
144 QString sAudioDriver = pChannel->audioDriver();
145 if (sAudioDriver.isEmpty() && bNew)
146 sAudioDriver = pOptions->sAudioDriver;
147 if (!sAudioDriver.isEmpty()) {
148 if (AudioDriverComboBox->listBox()->findItem(sAudioDriver, Qt::ExactMatch) == NULL)
149 AudioDriverComboBox->insertItem(sAudioDriver);
150 AudioDriverComboBox->setCurrentText(sAudioDriver);
151 }
152 // Done.
153 m_iDirtySetup--;
154 stabilizeForm();
155 }
156
157
158 // Accept settings (OK button slot).
159 void qsamplerChannelForm::accept (void)
160 {
161 if (m_pChannel == NULL)
162 return;
163
164 qsamplerOptions *pOptions = m_pChannel->options();
165 if (pOptions == NULL)
166 return;
167
168 // We'll go for it!
169 if (m_iDirtyCount > 0) {
170 int iErrors = 0;
171 // Audio output driver type...
172 if (!m_pChannel->setAudioDriver(AudioDriverComboBox->currentText()))
173 iErrors++;
174 // MIDI input driver type...
175 if (!m_pChannel->setMidiDriver(MidiDriverComboBox->currentText()))
176 iErrors++;
177 // MIDI input port number...
178 if (!m_pChannel->setMidiPort(MidiPortSpinBox->value()))
179 iErrors++;
180 // MIDI input channel...
181 if (!m_pChannel->setMidiChannel(MidiChannelSpinBox->value()))
182 iErrors++;
183 // Engine name...
184 if (!m_pChannel->loadEngine(EngineNameComboBox->currentText()))
185 iErrors++;
186 // Instrument file and index...
187 if (!m_pChannel->loadInstrument(InstrumentFileComboBox->currentText(), InstrumentNrSpinBox->value()))
188 iErrors++;
189 // Show error messages?
190 if (iErrors > 0)
191 m_pChannel->appendMessagesError(tr("Some channel settings could not be set.\n\nSorry."));
192 }
193
194 // Save default engine name, instrument directory and history...
195 pOptions->sInstrumentDir = QFileInfo(InstrumentFileComboBox->currentText()).dirPath(true);
196 pOptions->sEngineName = EngineNameComboBox->currentText();
197 pOptions->sAudioDriver = AudioDriverComboBox->currentText();
198 pOptions->sMidiDriver = MidiDriverComboBox->currentText();
199 pOptions->saveComboBoxHistory(InstrumentFileComboBox);
200
201 // Just go with dialog acceptance.
202 QDialog::accept();
203 }
204
205
206 // Reject settings (Cancel button slot).
207 void qsamplerChannelForm::reject (void)
208 {
209 bool bReject = true;
210
211 // Check if there's any pending changes...
212 if (m_iDirtyCount > 0 && OkPushButton->isEnabled()) {
213 switch (QMessageBox::warning(this, tr("Warning"),
214 tr("Some channel settings have been changed.\n\n"
215 "Do you want to apply the changes?"),
216 tr("Apply"), tr("Discard"), tr("Cancel"))) {
217 case 0: // Apply...
218 accept();
219 return;
220 case 1: // Discard
221 break;
222 default: // Cancel.
223 bReject = false;
224 }
225 }
226
227 if (bReject)
228 QDialog::reject();
229 }
230
231
232 // Browse and open an instrument file.
233 void qsamplerChannelForm::openInstrumentFile (void)
234 {
235 qsamplerOptions *pOptions = m_pChannel->options();
236 if (pOptions == NULL)
237 return;
238
239 // FIXME: the instrument file filters should be restricted,
240 // depending on the current engine.
241 QString sInstrumentFile = QFileDialog::getOpenFileName(
242 pOptions->sInstrumentDir, // Start here.
243 tr("Instrument files") + " (*.gig *.dls)", // Filter (GIG and DLS files)
244 this, 0, // Parent and name (none)
245 tr("Instrument files") // Caption.
246 );
247
248 if (sInstrumentFile.isEmpty())
249 return;
250
251 InstrumentFileComboBox->setCurrentText(sInstrumentFile);
252 }
253
254
255 // Refresh the actual instrument name.
256 void qsamplerChannelForm::updateInstrumentName (void)
257 {
258 // FIXME: A better idea would be to use libgig
259 // to retrieve the REAL instrument name.
260 InstrumentNameTextLabel->setText(QFileInfo(InstrumentFileComboBox->currentText()).fileName()
261 + " [" + QString::number(InstrumentNrSpinBox->value()) + "]");
262
263 optionsChanged();
264 }
265
266
267
268 // Dirty up settings.
269 void qsamplerChannelForm::optionsChanged (void)
270 {
271 if (m_iDirtySetup > 0)
272 return;
273
274 m_iDirtyCount++;
275 stabilizeForm();
276 }
277
278
279 // Stabilize current form state.
280 void qsamplerChannelForm::stabilizeForm (void)
281 {
282 const QString& sFilename = InstrumentFileComboBox->currentText();
283 OkPushButton->setEnabled(m_iDirtyCount > 0 && !sFilename.isEmpty() && QFileInfo(sFilename).exists());
284 }
285
286
287 // end of qsamplerChannelForm.ui.h
288

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