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

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Revision 2069 - (show annotations) (download)
Mon Mar 15 10:45:35 2010 UTC (10 years, 6 months ago) by capela
File size: 10531 byte(s)
- Still trying to fix instrument list view/model for Qt >= 4.6. (part 3/n)

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), m_iMidiMap(LSCP_MIDI_MAP_ALL)
43 {
44 // QAbstractItemModel::reset();
45 }
46
47 InstrumentListModel::~InstrumentListModel (void)
48 {
49 clear();
50 }
51
52
53 int InstrumentListModel::rowCount ( const QModelIndex& /*parent*/) const
54 {
55 int nrows = 0;
56
57 if (m_iMidiMap == LSCP_MIDI_MAP_ALL) {
58 InstrumentMap::const_iterator itMap = m_instruments.constBegin();
59 for ( ; itMap != m_instruments.constEnd(); ++itMap)
60 nrows += (*itMap).size();
61 } else {
62 InstrumentMap::const_iterator itMap = m_instruments.find(m_iMidiMap);
63 if (itMap != m_instruments.constEnd())
64 nrows += (*itMap).size();
65 }
66
67 return nrows;
68 }
69
70
71 int InstrumentListModel::columnCount ( const QModelIndex& /*parent*/) const
72 {
73 return 9;
74 }
75
76
77 QVariant InstrumentListModel::data (
78 const QModelIndex &index, int role ) const
79 {
80 if (!index.isValid())
81 return QVariant();
82 const Instrument *pInstr
83 = static_cast<Instrument *> (index.internalPointer());
84
85 if (pInstr && role == Qt::DisplayRole) {
86 switch (index.column()) {
87 case 0: return pInstr->name();
88 case 1: return QVariant::fromValue(pInstr->map());
89 case 2: return QVariant::fromValue(pInstr->bank());
90 case 3: return QVariant::fromValue(pInstr->prog() + 1);
91 case 4: return pInstr->engineName();
92 case 5: return pInstr->instrumentFile();
93 case 6: return QVariant::fromValue(pInstr->instrumentNr());
94 case 7: return QString::number(pInstr->volume() * 100.0) + " %";
95 case 8: {
96 switch (pInstr->loadMode()) {
97 case 3: return tr("Persistent");
98 case 2: return tr("On Demand Hold");
99 case 1: return tr("On Demand");
100 }
101 }
102 default:
103 break;
104 }
105 }
106
107 return QVariant();
108 }
109
110
111 QModelIndex InstrumentListModel::index (
112 int row, int col, const QModelIndex& /*parent*/ ) const
113 {
114 const Instrument *pInstr = NULL;
115
116 if (m_iMidiMap == LSCP_MIDI_MAP_ALL) {
117 int nrows = 0;
118 InstrumentMap::const_iterator itMap = m_instruments.constBegin();
119 for ( ; itMap != m_instruments.constEnd(); ++itMap) {
120 const InstrumentList& list = *itMap;
121 nrows += list.size();
122 if (row < nrows) {
123 pInstr = list.at(row + list.size() - nrows);
124 break;
125 }
126 }
127 } else {
128 // Resolve MIDI instrument map...
129 InstrumentMap::const_iterator itMap = m_instruments.find(m_iMidiMap);
130 if (itMap != m_instruments.constEnd()) {
131 const InstrumentList& list = *itMap;
132 if (row < list.size())
133 pInstr = list.at(row);
134 }
135 }
136
137 if (pInstr)
138 return createIndex(row, col, (void *) pInstr);
139 else
140 return QModelIndex();
141 }
142
143
144 QModelIndex InstrumentListModel::parent ( const QModelIndex& /*child*/ ) const
145 {
146 return QModelIndex();
147 }
148
149
150 QVariant InstrumentListModel::headerData (
151 int section, Qt::Orientation orientation, int role ) const
152 {
153 if (orientation == Qt::Horizontal && role == Qt::DisplayRole) {
154 switch (section) {
155 case 0: return tr("Name");
156 case 1: return tr("Map");
157 case 2: return tr("Bank");
158 case 3: return tr("Prog");
159 case 4: return tr("Engine");
160 case 5: return tr("File");
161 case 6: return tr("Nr");
162 case 7: return tr("Vol");
163 case 8: return tr("Mode");
164 }
165 }
166
167 return QAbstractItemModel::headerData(section, orientation, role);
168 }
169
170
171 void InstrumentListModel::setMidiMap ( int iMidiMap )
172 {
173 if (iMidiMap < 0)
174 iMidiMap = LSCP_MIDI_MAP_ALL;
175
176 m_iMidiMap = iMidiMap;
177 }
178
179
180 int InstrumentListModel::midiMap (void) const
181 {
182 return m_iMidiMap;
183 }
184
185
186 const Instrument *InstrumentListModel::addInstrument (
187 int iMap, int iBank, int iProg )
188 {
189 // Check it there's already one instrument item
190 // with the very same key (bank, program);
191 // if yes, just remove it without prejudice...
192 InstrumentList& list = m_instruments[iMap];
193 for (int i = 0; i < list.size(); ++i) {
194 const Instrument *pInstr = list.at(i);
195 if (pInstr->bank() == iBank && pInstr->prog() == iProg) {
196 delete pInstr;
197 list.removeAt(i);
198 break;
199 }
200 }
201
202 // Resolve the appropriate place, we keep the list sorted that way...
203 int i = 0;
204 for ( ; i < list.size(); ++i) {
205 const Instrument *pInstr = list.at(i);
206 if (iBank < pInstr->bank()
207 || (iBank == pInstr->bank() && iProg < pInstr->prog())) {
208 break;
209 }
210 }
211
212 Instrument *pInstr = new Instrument(iMap, iBank, iProg);
213 if (pInstr->getInstrument()) {
214 list.insert(i, pInstr);
215 } else {
216 delete pInstr;
217 pInstr = NULL;
218 }
219
220 return pInstr;
221 }
222
223
224 void InstrumentListModel::removeInstrument ( const Instrument *pInstrument )
225 {
226 const int iMap = pInstrument->map();
227 const int iBank = pInstrument->bank();
228 const int iProg = pInstrument->prog();
229
230 if (m_instruments.contains(iMap)) {
231 InstrumentList& list = m_instruments[iMap];
232 for (int i = 0; i < list.size(); ++i) {
233 const Instrument *pInstr = list.at(i);
234 if (pInstr->bank() == iBank && pInstr->prog() == iProg) {
235 delete pInstr;
236 list.removeAt(i);
237 break;
238 }
239 }
240 }
241 }
242
243
244 // Reposition the instrument in the model (called when map/bank/prg changed)
245 void InstrumentListModel::updateInstrument ( const Instrument *pInstrument )
246 {
247 const int iMap = pInstrument->map();
248 const int iBank = pInstrument->bank();
249 const int iProg = pInstrument->prog();
250
251 // Remove given instrument from its current list...
252 removeInstrument(pInstrument);
253
254 // Re-add the instrument...
255 addInstrument(iMap, iBank, iProg);
256 }
257
258
259 void InstrumentListModel::refresh (void)
260 {
261 MainForm *pMainForm = MainForm::getInstance();
262 if (pMainForm == NULL)
263 return;
264 if (pMainForm->client() == NULL)
265 return;
266
267 QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
268
269 clear();
270
271 // Load the whole bunch of instrument items...
272 lscp_midi_instrument_t *pInstrs
273 = ::lscp_list_midi_instruments(pMainForm->client(), m_iMidiMap);
274 for (int iInstr = 0; pInstrs && pInstrs[iInstr].map >= 0; ++iInstr) {
275 const int iMap = pInstrs[iInstr].map;
276 const int iBank = pInstrs[iInstr].bank;
277 const int iProg = pInstrs[iInstr].prog;
278 addInstrument(iMap, iBank, iProg);
279 // Try to keep it snappy :)
280 QApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
281 }
282
283 QApplication::restoreOverrideCursor();
284
285 if (pInstrs == NULL && ::lscp_client_get_errno(pMainForm->client())) {
286 pMainForm->appendMessagesClient("lscp_list_midi_instruments");
287 pMainForm->appendMessagesError(
288 tr("Could not get current list of MIDI instrument mappings.\n\nSorry."));
289 }
290 }
291
292 void InstrumentListModel::beginReset (void)
293 {
294 #if QT_VERSION >= 0x040600
295 QAbstractItemModel::beginResetModel();
296 #endif
297 }
298
299 void InstrumentListModel::endReset (void)
300 {
301 #if QT_VERSION >= 0x040600
302 QAbstractItemModel::endResetModel();
303 #else
304 QAbstractItemModel::reset();
305 #endif
306 }
307
308
309 // Map clear.
310 void InstrumentListModel::clear (void)
311 {
312 InstrumentMap::iterator itMap = m_instruments.begin();
313 for ( ; itMap != m_instruments.end(); ++itMap) {
314 InstrumentList& list = itMap.value();
315 qDeleteAll(list);
316 list.clear();
317 }
318
319 m_instruments.clear();
320 }
321
322
323 //-------------------------------------------------------------------------
324 // QSampler::InstrumentListView - list view for MIDI prog mappings
325 //
326
327 // Constructor.
328 InstrumentListView::InstrumentListView ( QWidget *pParent )
329 : QTreeView(pParent)
330 {
331 m_pListModel = new InstrumentListModel(this);
332
333 QTreeView::setModel(m_pListModel);
334
335 QTreeView::setRootIsDecorated(false);
336 QTreeView::setUniformRowHeights(true);
337 QTreeView::setAlternatingRowColors(true);
338 QTreeView::setSelectionBehavior(QAbstractItemView::SelectRows);
339 QTreeView::setSelectionMode(QAbstractItemView::SingleSelection);
340 QTreeView::setItemsExpandable(false);
341
342 QHeaderView *pHeader = QTreeView::header();
343 pHeader->setDefaultAlignment(Qt::AlignLeft);
344 pHeader->setMovable(false);
345 pHeader->setStretchLastSection(true);
346 pHeader->resizeSection(0, 120); // Name
347 QTreeView::resizeColumnToContents(1); // Map
348 QTreeView::resizeColumnToContents(2); // Bank
349 QTreeView::resizeColumnToContents(3); // Prog
350 QTreeView::resizeColumnToContents(4); // Engine
351 pHeader->resizeSection(5, 240); // File
352 QTreeView::resizeColumnToContents(6); // Nr
353 pHeader->resizeSection(7, 60); // Vol
354 }
355
356
357 // Destructor.
358 InstrumentListView::~InstrumentListView (void)
359 {
360 delete m_pListModel;
361 }
362
363
364 void InstrumentListView::setMidiMap ( int iMidiMap )
365 {
366 m_pListModel->setMidiMap(iMidiMap);
367 }
368
369
370 int InstrumentListView::midiMap (void) const
371 {
372 return m_pListModel->midiMap();
373 }
374
375
376 const Instrument *InstrumentListView::addInstrument (
377 int iMap, int iBank, int iProg )
378 {
379 m_pListModel->beginReset();
380 const Instrument *pInstrument
381 = m_pListModel->addInstrument(iMap, iBank, iProg);
382 m_pListModel->endReset();
383
384 return pInstrument;
385 }
386
387
388 void InstrumentListView::removeInstrument ( const Instrument *pInstrument )
389 {
390 m_pListModel->beginReset();
391 m_pListModel->removeInstrument(pInstrument);
392 m_pListModel->endReset();
393 }
394
395
396 // Reposition the instrument in the model (called when map/bank/prg changed)
397 void InstrumentListView::updateInstrument ( const Instrument *pInstrument )
398 {
399 m_pListModel->beginReset();
400 m_pListModel->updateInstrument(pInstrument);
401 m_pListModel->endReset();
402 }
403
404
405 // Refreshener.
406 void InstrumentListView::refresh (void)
407 {
408 m_pListModel->beginReset();
409 m_pListModel->refresh();
410 m_pListModel->endReset();
411 }
412
413
414 } // namespace QSampler
415
416
417 // end of qsamplerInstrumentList.cpp

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