/[svn]/qsampler/trunk/src/qsamplerInstrumentList.cpp
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Contents of /qsampler/trunk/src/qsamplerInstrumentList.cpp

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Revision 2064 - (show annotations) (download)
Fri Mar 12 16:02:32 2010 UTC (9 years, 11 months ago) by capela
File size: 9751 byte(s)
* Attempt to fix broken instrument list model/view for Qt >= 4.6.

1 // qsamplerInstrumentList.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 "qsamplerInstrumentList.h"
25
26 #include "qsamplerInstrument.h"
27
28 #include "qsamplerOptions.h"
29 #include "qsamplerMainForm.h"
30
31 #include <QApplication>
32 #include <QCursor>
33
34
35 namespace QSampler {
36
37 //-------------------------------------------------------------------------
38 // QSampler::InstrumentListModel - data model for MIDI prog mappings
39 //
40
41 InstrumentListModel::InstrumentListModel ( QObject *pParent )
42 : QAbstractItemModel(pParent)
43 {
44 m_iMidiMap = LSCP_MIDI_MAP_ALL;
45
46 QAbstractItemModel::reset();
47 }
48
49 InstrumentListModel::~InstrumentListModel (void)
50 {
51 clear();
52 }
53
54
55 int InstrumentListModel::rowCount ( const QModelIndex& /*parent*/) const
56 {
57 int nrows = 0;
58
59 if (m_iMidiMap == LSCP_MIDI_MAP_ALL) {
60 InstrumentMap::const_iterator itMap = m_instruments.constBegin();
61 for ( ; itMap != m_instruments.constEnd(); ++itMap)
62 nrows += (*itMap).size();
63 } else {
64 InstrumentMap::const_iterator itMap = m_instruments.find(m_iMidiMap);
65 if (itMap != m_instruments.constEnd())
66 nrows += (*itMap).size();
67 }
68
69 return nrows;
70 }
71
72
73 int InstrumentListModel::columnCount ( const QModelIndex& /*parent*/) const
74 {
75 return 9;
76 }
77
78
79 QVariant InstrumentListModel::data (
80 const QModelIndex &index, int role ) const
81 {
82 if (!index.isValid())
83 return QVariant();
84
85 const Instrument *pInstr
86 = static_cast<Instrument *> (index.internalPointer());
87
88 if (pInstr && role == Qt::DisplayRole) {
89 switch (index.column()) {
90 case 0: return pInstr->name();
91 case 1: return QVariant::fromValue(pInstr->map());
92 case 2: return QVariant::fromValue(pInstr->bank());
93 case 3: return QVariant::fromValue(pInstr->prog() + 1);
94 case 4: return pInstr->engineName();
95 case 5: return pInstr->instrumentFile();
96 case 6: return QVariant::fromValue(pInstr->instrumentNr());
97 case 7: return QString::number(pInstr->volume() * 100.0) + " %";
98 case 8: {
99 switch (pInstr->loadMode()) {
100 case 3: return tr("Persistent");
101 case 2: return tr("On Demand Hold");
102 case 1: return tr("On Demand");
103 }
104 }
105 default:
106 break;
107 }
108 }
109
110 return QVariant();
111 }
112
113
114 QModelIndex InstrumentListModel::index (
115 int row, int col, const QModelIndex& /*parent*/ ) const
116 {
117 const Instrument *pInstr = NULL;
118
119 if (m_iMidiMap == LSCP_MIDI_MAP_ALL) {
120 int nrows = 0;
121 InstrumentMap::const_iterator itMap = m_instruments.constBegin();
122 for ( ; itMap != m_instruments.constEnd(); ++itMap) {
123 const InstrumentList& list = *itMap;
124 nrows += list.size();
125 if (row < nrows) {
126 pInstr = list.at(row + list.size() - nrows);
127 break;
128 }
129 }
130 } else {
131 // Resolve MIDI instrument map...
132 InstrumentMap::const_iterator itMap = m_instruments.find(m_iMidiMap);
133 if (itMap != m_instruments.constEnd()) {
134 const InstrumentList& list = *itMap;
135 // resolve instrument in that map
136 if (row < list.size())
137 pInstr = list.at(row);
138 }
139 }
140
141 if (pInstr)
142 return createIndex(row, col, (void *) pInstr);
143 else
144 return QModelIndex();
145 }
146
147
148 QModelIndex InstrumentListModel::parent ( const QModelIndex& child ) const
149 {
150 return QModelIndex();
151 }
152
153
154 QVariant InstrumentListModel::headerData (
155 int section, Qt::Orientation orientation, int role ) const
156 {
157 if (orientation == Qt::Horizontal && role == Qt::DisplayRole) {
158 switch (section) {
159 case 0: return tr("Name");
160 case 1: return tr("Map");
161 case 2: return tr("Bank");
162 case 3: return tr("Prog");
163 case 4: return tr("Engine");
164 case 5: return tr("File");
165 case 6: return tr("Nr");
166 case 7: return tr("Vol");
167 case 8: return tr("Mode");
168 }
169 }
170
171 return QAbstractItemModel::headerData(section, orientation, role);
172 }
173
174
175 void InstrumentListModel::setMidiMap ( int iMidiMap )
176 {
177 if (iMidiMap < 0)
178 iMidiMap = LSCP_MIDI_MAP_ALL;
179
180 m_iMidiMap = iMidiMap;
181 }
182
183
184 int InstrumentListModel::midiMap (void) const
185 {
186 return m_iMidiMap;
187 }
188
189
190 const Instrument *InstrumentListModel::addInstrument (
191 int iMap, int iBank, int iProg )
192 {
193 // Check it there's already one instrument item
194 // with the very same key (bank, program);
195 // if yes, just remove it without prejudice...
196 InstrumentList& list = m_instruments[iMap];
197 for (int i = 0; i < list.size(); ++i) {
198 const Instrument *pInstr = list.at(i);
199 if (pInstr->bank() == iBank && pInstr->prog() == iProg) {
200 delete pInstr;
201 list.removeAt(i);
202 break;
203 }
204 }
205
206 // Resolve the appropriate place, we keep the list sorted that way...
207 int i = 0;
208 for ( ; i < list.size(); ++i) {
209 const Instrument *pInstr = list.at(i);
210 if (iBank < pInstr->bank()
211 || (iBank == pInstr->bank() && iProg < pInstr->prog())) {
212 break;
213 }
214 }
215
216 Instrument *pInstr = new Instrument(iMap, iBank, iProg);
217 if (pInstr->getInstrument()) {
218 list.insert(i, pInstr);
219 } else {
220 delete pInstr;
221 pInstr = NULL;
222 }
223
224 return pInstr;
225 }
226
227
228 void InstrumentListModel::removeInstrument ( const Instrument *pInstrument )
229 {
230 const int iMap = pInstrument->map();
231 const int iBank = pInstrument->bank();
232 const int iProg = pInstrument->prog();
233
234 if (m_instruments.contains(iMap)) {
235 InstrumentList& list = m_instruments[iMap];
236 for (int i = 0; i < list.size(); ++i) {
237 const Instrument *pInstr = list.at(i);
238 if (pInstr->bank() == iBank && pInstr->prog() == iProg) {
239 delete pInstr;
240 list.removeAt(i);
241 break;
242 }
243 }
244 }
245 }
246
247
248 // Reposition the instrument in the model (called when map/bank/prg changed)
249 void InstrumentListModel::updateInstrument ( const Instrument *pInstrument )
250 {
251 const int iMap = pInstrument->map();
252 const int iBank = pInstrument->bank();
253 const int iProg = pInstrument->prog();
254
255 // Remove given instrument from its current list...
256 removeInstrument(pInstrument);
257
258 // Re-add the instrument...
259 addInstrument(iMap, iBank, iProg);
260 }
261
262
263 void InstrumentListModel::refresh (void)
264 {
265 MainForm *pMainForm = MainForm::getInstance();
266 if (pMainForm == NULL)
267 return;
268 if (pMainForm->client() == NULL)
269 return;
270
271 QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
272
273 clear();
274
275 // Load the whole bunch of instrument items...
276 lscp_midi_instrument_t *pInstrs
277 = ::lscp_list_midi_instruments(pMainForm->client(), m_iMidiMap);
278 for (int iInstr = 0; pInstrs && pInstrs[iInstr].map >= 0; ++iInstr) {
279 const int iMap = pInstrs[iInstr].map;
280 const int iBank = pInstrs[iInstr].bank;
281 const int iProg = pInstrs[iInstr].prog;
282 addInstrument(iMap, iBank, iProg);
283 // Try to keep it snappy :)
284 QApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
285 }
286
287 QApplication::restoreOverrideCursor();
288
289 if (pInstrs == NULL && ::lscp_client_get_errno(pMainForm->client())) {
290 pMainForm->appendMessagesClient("lscp_list_midi_instruments");
291 pMainForm->appendMessagesError(
292 tr("Could not get current list of MIDI instrument mappings.\n\nSorry."));
293 }
294 }
295
296 void InstrumentListModel::beginReset (void)
297 {
298 #if QT_VERSION >= 0x040600
299 QAbstractItemModel::beginResetModel();
300 #endif
301 }
302
303 void InstrumentListModel::endReset (void)
304 {
305 #if QT_VERSION >= 0x040600
306 QAbstractItemModel::endResetModel();
307 #else
308 QAbstractItemModel::reset();
309 #endif
310 }
311
312
313 // Map clear.
314 void InstrumentListModel::clear (void)
315 {
316 InstrumentMap::iterator itMap = m_instruments.begin();
317 for ( ; itMap != m_instruments.end(); ++itMap) {
318 InstrumentList& list = itMap.value();
319 qDeleteAll(list);
320 list.clear();
321 }
322
323 m_instruments.clear();
324 }
325
326
327 //-------------------------------------------------------------------------
328 // QSampler::InstrumentListView - list view for MIDI prog mappings
329 //
330
331 // Constructor.
332 InstrumentListView::InstrumentListView ( QWidget *pParent )
333 : QTreeView(pParent)
334 {
335 m_pListModel = new InstrumentListModel(this);
336
337 QTreeView::setModel(m_pListModel);
338 }
339
340
341 // Destructor.
342 InstrumentListView::~InstrumentListView (void)
343 {
344 delete m_pListModel;
345 }
346
347
348 void InstrumentListView::setMidiMap ( int iMidiMap )
349 {
350 m_pListModel->setMidiMap(iMidiMap);
351 }
352
353
354 int InstrumentListView::midiMap (void) const
355 {
356 return m_pListModel->midiMap();
357 }
358
359
360 const Instrument *InstrumentListView::addInstrument (
361 int iMap, int iBank, int iProg )
362 {
363 m_pListModel->beginReset();
364 const Instrument *pInstrument
365 = m_pListModel->addInstrument(iMap, iBank, iProg);
366 m_pListModel->endReset();
367
368 return pInstrument;
369 }
370
371
372 void InstrumentListView::removeInstrument ( const Instrument *pInstrument )
373 {
374 m_pListModel->beginReset();
375 m_pListModel->removeInstrument(pInstrument);
376 m_pListModel->endReset();
377 }
378
379
380 // Reposition the instrument in the model (called when map/bank/prg changed)
381 void InstrumentListView::updateInstrument ( const Instrument *pInstrument )
382 {
383 m_pListModel->beginReset();
384 m_pListModel->updateInstrument(pInstrument);
385 m_pListModel->endReset();}
386
387
388 // Refreshener.
389 void InstrumentListView::refresh (void)
390 {
391 m_pListModel->beginReset();
392 m_pListModel->refresh();
393 m_pListModel->endReset();
394 }
395
396
397 } // namespace QSampler
398
399
400 // end of qsamplerInstrumentList.cpp

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