Developer Documentation

TreeModel.cc
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40 \*===========================================================================*/
41
42
43
44 #include "TreeModel.hh"
45
46 #include <QtWidgets>
47
48
49 #include <OpenFlipper/BasePlugin/PluginFunctions.hh>
50 #include <OpenFlipper/common/GlobalOptions.hh>
51
52 #include <ObjectTypes/Light/LightWidget.hh>
53
54
55 //******************************************************************************
56
61 TreeModel::TreeModel( QObject *_parent) : QAbstractItemModel(_parent)
62 {
63 rootItem_ = new TreeItem( -1, "ROOT", DATA_UNKNOWN, 0);
64 }
65
66
67 //******************************************************************************
68
72 TreeModel::~TreeModel()
73 {
74
75 }
76
77
78 //******************************************************************************
79
80 int TreeModel::columnCount(const QModelIndex &/*_parent*/) const
81 {
82 // Name,Visible,Source,Target -> 4
83 return (4);
84 }
85
86
87 //******************************************************************************
88
95 QVariant TreeModel::data(const QModelIndex &_index, int _role) const
96 {
97
98 // Skip invalid requests
99 if (!_index.isValid())
100 return QVariant();
101
102 // Get the corresponding tree item
103 TreeItem *item = static_cast<TreeItem*>(_index.internalPointer());
104
105 if ( item == rootItem_ ) {
106 std::cerr << "Root" << std::endl;
107 }
108
109 // Set the background color of the objects row
110 if ( _role == Qt::BackgroundRole ) {
111 if ( !item->visible() ) {
112 return QVariant( QBrush(QColor(100,100,100) ) );
113 }
114 }
115
116
117
118 switch (_index.column() ) {
119 // Name
120 case 0 :
121
122 // If we are setting the name, also add the icon
123 if ( _role == Qt::DecorationRole ) {
124 if (item->dataType() == DATA_LIGHT)
125 {
126 LightObject* light = 0;
127 if (item->id() != -1 && PluginFunctions::getObject( item->id(), light ) ) {
128 if (light != 0 && !light->lightSource()->enabled())
129 return QVariant (QIcon (OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"LightOff.png"));
130 }
131 }
132 return QVariant( typeIcon(item->dataType()) );
133 }
134
135 if (_role != Qt::DisplayRole && _role != Qt::EditRole )
136 return QVariant();
137
138 return QVariant(item->name());
139
140 break;
141 // Visible
142 case 1 :
143 if (_role == Qt::CheckStateRole ) {
144 bool visible = false;
145 // target group
146 if (item->isGroup() && item->childCount() > 0)
147 {
148 QList< TreeItem* > children = item->getLeafs();
149
150 visible = children[0]->visible();
151 for (int i=0; i < children.size() ; ++i)
152 {
153 if (visible != children[i]->visible())
154 return QVariant(Qt::PartiallyChecked);
155 }
156 }
157 else
158 visible = item->visible();
159 return (visible) ? QVariant(Qt::Checked) : QVariant(Qt::Unchecked);
160 }
161 return QVariant();
162 // Source
163 case 2 :
164 if (_role == Qt::CheckStateRole ) {
165 bool source = false;
166 // target group
167 if (item->isGroup() && item->childCount() > 0)
168 {
169 QList< TreeItem* > children = item->getLeafs();
170
171 source = children[0]->source();
172 for (int i=0; i < children.size() ; ++i)
173 {
174 if (source != children[i]->source())
175 return QVariant(Qt::PartiallyChecked);
176 }
177 }
178 else
179 source = item->source();
180 return (source) ? QVariant(Qt::Checked) : QVariant(Qt::Unchecked);
181 }
182 return QVariant();
183
184 // Target
185 case 3 :
186 if (_role == Qt::CheckStateRole ) {
187 bool target = false;
188 // target group
189 if (item->isGroup() && item->childCount() > 0)
190 {
191 QList< TreeItem* > children = item->getLeafs();
192
193 target = children[0]->target();
194 for (int i=0; i < children.size() ; ++i)
195 {
196 if (target != children[i]->target())
197 return QVariant(Qt::PartiallyChecked);
198 }
199 }
200 else
201 target = item->target();
202 return (target) ? QVariant(Qt::Checked) : QVariant(Qt::Unchecked);
203 }
204 return QVariant();
205
206 default:
207 return QVariant();
208 }
209 return QVariant();
210
211 }
212
213
214 //******************************************************************************
215
221 Qt::ItemFlags TreeModel::flags(const QModelIndex &_index) const
222 {
223 if (!_index.isValid())
224 return 0;
225
226 Qt::ItemFlags flags = 0;
227
228 // Show/Source/Target
229 if ( ( _index.column() == 1 ) ||
230 ( _index.column() == 2 ) ||
231 ( _index.column() == 3 ) )
232 flags = Qt::ItemIsUserCheckable | Qt::ItemIsEnabled | Qt::ItemIsSelectable;
233 else
234 if ( _index.column() == 0 )
235 flags = Qt::ItemIsEditable | Qt::ItemIsEnabled | Qt::ItemIsSelectable;
236 else
237 flags = Qt::ItemIsEnabled;
238
239 // Get the corresponding tree item
240 TreeItem *item = static_cast<TreeItem*>(_index.internalPointer());
241
242 if ( item->isGroup() )
243 return flags | Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled;
244 else
245 return flags | Qt::ItemIsDragEnabled;
246 }
247
248
249 //******************************************************************************
250
258 QVariant TreeModel::headerData(int _section, Qt::Orientation _orientation,
259 int _role) const
260 {
261 if (_orientation == Qt::Horizontal && _role == Qt::DisplayRole) {
262
263 switch (_section) {
264 case 0 : return QVariant("Name");
265 case 1 : return QVariant("Show");
266 case 2 : return QVariant("Source");
267 case 3 : return QVariant("Target");
268 default :
269 return QVariant();
270 }
271 }
272 return QVariant();
273 }
274
275
276 //******************************************************************************
277
285 QModelIndex TreeModel::index(int _row, int _column,const QModelIndex &_parent) const
286 {
287 // if (!hasIndex(row, column, _parent))
288 // return QModelIndex();
289
290 TreeItem *parentItem;
291
292 if (!_parent.isValid())
293 parentItem = rootItem_;
294 else
295 parentItem = static_cast<TreeItem*>(_parent.internalPointer());
296
297 TreeItem *childItem = parentItem->child(_row);
298 if (childItem)
299 return createIndex(_row, _column, childItem);
300 else
301 return QModelIndex();
302 }
303
304
305 //******************************************************************************
306
312 QModelIndex TreeModel::parent(const QModelIndex &_index) const
313 {
314 if (!_index.isValid())
315 return QModelIndex();
316
317 TreeItem *childItem = static_cast<TreeItem*>(_index.internalPointer());
318 TreeItem *parentItem = childItem->parent();
319
320 if (parentItem == rootItem_)
321 return QModelIndex();
322
323 return createIndex(parentItem->row(), 0, parentItem);
324 }
325
326
327 //******************************************************************************
328
334 int TreeModel::rowCount(const QModelIndex &_parent) const
335 {
336 TreeItem *parentItem;
337 if (_parent.column() > 0)
338 return 0;
339
340 if (!_parent.isValid())
341 parentItem = rootItem_;
342 else
343 parentItem = static_cast<TreeItem*>(_parent.internalPointer());
344
345 return parentItem->childCount();
346 }
347 //******************************************************************************
348
353 void TreeModel::objectChanged(int _id) {
354
355 if ( _id != -1 ){
356
357 BaseObject* obj = 0;
358 PluginFunctions::getObject(_id, obj);
359
360 TreeItem* item = rootItem_->childExists(_id);
361
362 //if internal and external representation are both valid
363 if (obj != 0 && item != 0){
364 //update the name
365 bool updateRow = false;
366 if ( obj->name() != item->name() ){
367
368 item->name( obj->name() );
369 updateRow = true;
370 }
371
372 //update visibility
373 if ( obj->visible() != item->visible() ){
374
375 item->visible( obj->visible() );
376 updateRow = true;
377 }
378
379 //update source flag
380 if ( obj->source() != item->source() ){
381
382 item->source( obj->source() );
383 updateRow = true;
384 }
385
386 //update target flag
387 if ( obj->target() != item->target() ){
388
389 item->target( obj->target() );
390 updateRow = true;
391 }
392 if (updateRow)
393 {
394 //TODO actually we do not need to update the whole row but single column somehow doesn't work
395 QModelIndex index0 = getModelIndex(item,0);
396 QModelIndex index1 = getModelIndex(item,3);
397
398 if ( index0.isValid() && index1.isValid() ){
399 //the whole row has to be updated because of the grey background-color
400 emit dataChanged( index0, index1);
401 }
402 }
403
404 //update parent
405 if ( obj->parent() == PluginFunctions::objectRoot() && isRoot( item->parent() ) ){
406 return;
407 }else if ( obj->parent() == PluginFunctions::objectRoot() && !isRoot( item->parent() ) ){
408 moveItem(item, rootItem_ );
409 }else if ( obj->parent()->id() != item->parent()->id() ){
410 TreeItem* parent = rootItem_->childExists( obj->parent()->id() );
411
412 if (parent != 0)
413 moveItem(item, parent );
414 }
415
416 }
417 }
418
419 }
420
421
426 void TreeModel::objectAdded(BaseObject* _object){
427
428 // check if item already in model tree
429 // this function can be called by addEmpty and fileOpened
430 // both will be called by fileOpened such that the item
431 // already exists
432 if( rootItem_->childExists( _object->id() ))
433 return;
434
435 TreeItem* parent = 0;
436 //find the parent
437 if ( _object->parent() == PluginFunctions::objectRoot() )
438 parent = rootItem_;
439 else
440 parent = rootItem_->childExists( _object->parent()->id() );
441
442 if (parent != 0){
443 QModelIndex parentIndex = getModelIndex(parent, 0);
444
445 beginInsertRows(parentIndex, parent->childCount(), parent->childCount()); //insert at the bottom
446
447 TreeItem* item = new TreeItem( _object->id(), _object->name(), _object->dataType(), parent);
448
449 parent->appendChild( item );
450
451 endInsertRows();
452 }
453
454 objectChanged( _object->id() );
455 }
456
461 void TreeModel::objectDeleted(int _id){
462
463 TreeItem* item = rootItem_->childExists(_id);
464
465 if ( item != 0 && !isRoot(item) ){
466
467 QModelIndex itemIndex = getModelIndex(item, 0);
468 QModelIndex parentIndex = itemIndex.parent();
469
470 beginRemoveRows( parentIndex, itemIndex.row(), itemIndex.row() );
471
472 item->parent()->removeChild(item);
473 item->deleteSubtree();
474
475 delete item;
476
477 endRemoveRows();
478 }
479 }
480
481 //******************************************************************************
482
488 void TreeModel::moveItem(TreeItem* _item, TreeItem* _parent ){
489
490 QModelIndex itemIndex = getModelIndex(_item, 0);
491 QModelIndex oldParentIndex = itemIndex.parent();
492 QModelIndex newParentIndex = getModelIndex(_parent, 0);
493
494 beginMoveRows ( oldParentIndex, itemIndex.row(), itemIndex.row(), newParentIndex,0 );
495 _item->parent()->removeChild(_item);
496 _item->setParent( _parent );
497 _parent->appendChild( _item );
498 endMoveRows();
499 }
500
501 //******************************************************************************
502
508 TreeItem* TreeModel::getItem(const QModelIndex &_index) const
509 {
510 if (_index.isValid()) {
511 TreeItem *item = static_cast<TreeItem*>(_index.internalPointer());
512 if (item) return item;
513 }
514 return rootItem_;
515 }
516
517
518 //******************************************************************************
519
525 QString TreeModel::itemName(const QModelIndex &_index) const
526 {
527 if (_index.isValid()) {
528 TreeItem *item = static_cast<TreeItem*>(_index.internalPointer());
529 if (item)
530 return item->name();
531 }
532 return "not found";
533 }
534
535 //******************************************************************************
536
542 int TreeModel::itemId(const QModelIndex &_index) const
543 {
544 if (_index.isValid()) {
545 TreeItem *item = static_cast<TreeItem*>(_index.internalPointer());
546 if (item)
547 return item->id();
548 }
549 return -1;
550 }
551
552 //******************************************************************************
553
562 QModelIndex TreeModel::getModelIndex(TreeItem* _object, int _column ){
563
564 // root item gets an invalid QModelIndex
565 if ( _object == rootItem_ )
566 return QModelIndex();
567
568 QModelIndex index = createIndex(_object->row(), _column, _object);
569
570 return index;
571 }
572
573 //******************************************************************************
574
575 bool TreeModel::setData(const QModelIndex &_index, const QVariant &_value, int /*role*/)
576 {
577
578 emit dataChangedInside( itemId(_index), _index.column(), _value );
579
580
581 return true;
582 }
583
584
585 //******************************************************************************
586
592 bool TreeModel::isRoot(TreeItem * _item) {
593 return ( _item == rootItem_ );
594 }
595
596 /*******************************************************************************
597 drag & drop stuff
598 *******************************************************************************/
599
604 Qt::DropActions TreeModel::supportedDropActions() const
605 {
606 return /*Qt::CopyAction |*/ Qt::MoveAction;
607 }
608
609
610 //******************************************************************************
611
616 QStringList TreeModel::mimeTypes() const
617 {
618 QStringList types;
619 types << "DataControl/dragDrop";
620 return types;
621 }
622
623
624 //******************************************************************************
625
631 QMimeData* TreeModel::mimeData(const QModelIndexList& _indexes) const
632 {
633 QMimeData *mimeData = new QMimeData();
634 QByteArray encodedData;
635
636 QDataStream stream(&encodedData, QIODevice::WriteOnly);
637
638 QVector< int > rows;
639
640 foreach (QModelIndex index, _indexes) {
641 if (index.isValid()) {
642
643 if (!rows.contains( index.row() ) ){
644 TreeItem *item = getItem(index);
645 stream << item->id();
646
647 rows.push_back( index.row() );
648 }
649 }
650 }
651
652 mimeData->setData("DataControl/dragDrop", encodedData);
653 return mimeData;
654 }
655
656
657 //******************************************************************************
658
659 bool TreeModel::dropMimeData( const QMimeData *_data,
660 Qt::DropAction _action,
661 int /*_row*/,
662 int /*_column*/,
663 const QModelIndex &_parent)
664 {
665 if (_action == Qt::IgnoreAction)
666 return true;
667
668 if (!_data->hasFormat("DataControl/dragDrop"))
669 return false;
670
671 QByteArray encodedData = _data->data("DataControl/dragDrop");
672 QDataStream stream(&encodedData, QIODevice::ReadOnly);
673
674 QVector< int > ids;
675
676 while (!stream.atEnd()) {
677 int id;
678 stream >> id;
679
680 ids.push_back( id );
681 }
682
683 if (ids.count() == 0)
684 return false;
685
686 //get new parent
687 TreeItem *newParent = getItem(_parent);
688
689 if ( newParent == 0 || !newParent->isGroup() )
690 return false;
691
692 //and move all objects
693 for (int i = 0; i < ids.count(); i++){
694 //tell the DataControlPlugin to move the corresponding BaseObject
695 emit moveBaseObject( ids[i], newParent->id() );
696 }
697
698 return true;
699
700 }
701 //******************************************************************************
702 TreeItem *TreeModel::getItem(const int _id) const
703 {
704 return rootItem_->childExists(_id);
705 }
TreeItem::row
int row() const
get the row of this item from the parent
Definition: TreeItem.cc:228
TreeItem::removeChild
void removeChild(TreeItem *_item)
Remove a child from this object.
Definition: TreeItem.cc:308
TreeModel::mimeData
QMimeData * mimeData(const QModelIndexList &indexes) const
get the mimeData for a given ModelIndex
Definition: TreeModel.cc:631
LightObject::lightSource
LightSource * lightSource()
Definition: LightObject.cc:326
BaseObject::id
int id() const
Definition: BaseObject.cc:190
TreeModel::objectDeleted
void objectDeleted(int _id)
The object with the given id has been deleted. delete it from the internal tree.
Definition: TreeModel.cc:461
PluginFunctions.hh
TreeModel::index
QModelIndex index(int _row, int _column, const QModelIndex &_parent=QModelIndex()) const
Get the ModelIndex at given row,column.
Definition: TreeModel.cc:285
BaseObject::source
bool source()
Definition: BaseObject.cc:291
TreeModel::itemName
QString itemName(const QModelIndex &_index) const
Get the name of a TreeItem corresponding to a given ModelIndex.
Definition: TreeModel.cc:525
TreeItem::appendChild
void appendChild(TreeItem *child)
add a child to this node
Definition: TreeItem.cc:248
TreeItem::name
QString name()
name
Definition: TreeItem.cc:163
TreeItem::setParent
void setParent(TreeItem *_parent)
Set the parent pointer.
Definition: TreeItem.cc:242
LightObject
Definition: LightObject.hh:72
TreeModel::flags
Qt::ItemFlags flags(const QModelIndex &_index) const
return the types of the corresponding entry
Definition: TreeModel.cc:221
TreeModel::moveItem
void moveItem(TreeItem *_item, TreeItem *_parent)
move the item to a new parent
Definition: TreeModel.cc:488
TreeModel::getItem
TreeItem * getItem(const QModelIndex &_index) const
Get the TreeItem corresponding to a given ModelIndex.
Definition: TreeModel.cc:508
BaseObject::dataType
bool dataType(DataType _type) const
Definition: BaseObject.cc:221
TreeItem::childCount
int childCount() const
get the number of children
Definition: TreeItem.cc:264
TreeModel::rootItem_
TreeItem * rootItem_
Root item of the tree.
Definition: TreeModel.hh:161
TreeModel::columnCount
int columnCount(const QModelIndex &_parent=QModelIndex()) const
Return the number of columns.
Definition: TreeModel.cc:80
BaseObject::target
bool target()
Definition: BaseObject.cc:273
TreeModel::itemId
int itemId(const QModelIndex &_index) const
Get the id of a TreeItem corresponding to a given ModelIndex.
Definition: TreeModel.cc:542
GlobalOptions.hh
TreeModel::getModelIndex
QModelIndex getModelIndex(TreeItem *_object, int _column)
Return the ModelIndex corresponding to a given TreeItem and Column.
Definition: TreeModel.cc:562
TreeItem
Definition: TreeItem.hh:52
DATA_UNKNOWN
const DataType DATA_UNKNOWN(0)
None of the other Objects.
TreeItem::source
bool source()
source
Definition: TreeItem.cc:139
PluginFunctions::getObject
bool getObject(const int _identifier, BaseObject *&_object)
Get the object which has the given identifier.
Definition: PluginFunctions.cc:294
BaseObject::name
QString name() const
return the name of the object. The name defaults to NONAME if unset.
Definition: BaseObject.cc:730
TreeModel::mimeTypes
QStringList mimeTypes() const
stores the mimeType for Drag & Drop
Definition: TreeModel.cc:616
TreeModel::data
QVariant data(const QModelIndex &_index, int _role) const
Get the data of the corresponding entry.
Definition: TreeModel.cc:95
PluginFunctions::objectRoot
BaseObject *& objectRoot()
Get the root of the object structure.
Definition: PluginFunctions.cc:1099
typeIcon
DLLEXPORT QIcon & typeIcon(DataType _id)
Get an QIcon associated with the given DataType.
Definition: Types.cc:212
BaseObject::visible
virtual bool visible()
return if object is visible
Definition: BaseObject.cc:339
TreeModel::parent
QModelIndex parent(const QModelIndex &_index) const
Get the parent ModelIndex.
Definition: TreeModel.cc:312
TreeModel::isRoot
bool isRoot(TreeItem *_item)
Check if the given item is the root item.
Definition: TreeModel.cc:592
TreeItem::id
int id()
id
Definition: TreeItem.cc:78
TreeModel::objectChanged
void objectChanged(int _id)
The object with the given id has been changed. Check if model also has to be changed.
Definition: TreeModel.cc:353
DATA_LIGHT
#define DATA_LIGHT
Definition: Light.hh:58
ACG::SceneGraph::LightSource::enabled
bool enabled() const
Get light source status.
Definition: LightNode.cc:137
TreeItem::childExists
TreeItem * childExists(int _objectId)
Check if the element exists in the subtree of this element.
Definition: TreeItem.cc:271
TreeItem::parent
TreeItem * parent()
Get the parent item ( 0 if root item )
Definition: TreeItem.cc:235
TreeModel::headerData
QVariant headerData(int _section, Qt::Orientation _orientation, int _role=Qt::DisplayRole) const
return the header data of the model
Definition: TreeModel.cc:258
TreeModel::supportedDropActions
Qt::DropActions supportedDropActions() const
supported drag & Drop actions
Definition: TreeModel.cc:604
TreeModel::rowCount
int rowCount(const QModelIndex &_parent=QModelIndex()) const
get the number of rows
Definition: TreeModel.cc:334
TreeModel::TreeModel
TreeModel(QObject *_parent=0)
Constructor.
Definition: TreeModel.cc:61
BaseObject
Definition: BaseObject.hh:82
TreeModel::dropMimeData
bool dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent)
This is called when mimeData is dropped.
Definition: TreeModel.cc:659
TreeItem::child
TreeItem * child(int row)
return a child
Definition: TreeItem.cc:257
TreeModel::setData
bool setData(const QModelIndex &_index, const QVariant &_value, int _role)
Set Data at &#39;index&#39; to &#39;value&#39;.
Definition: TreeModel.cc:575
BaseObject::parent
BaseObject * parent()
Get the parent item ( 0 if rootitem )
Definition: BaseObject.cc:466
TreeItem::visible
bool visible()
visible
Definition: TreeItem.cc:151
TreeItem::dataType
DataType dataType()
dataType
Definition: TreeItem.cc:94
TreeItem::getLeafs
QList< TreeItem *> getLeafs()
get all leafes of the tree below this object ( These will be all visible objects ) ...
Definition: TreeItem.cc:326
TreeModel::~TreeModel
~TreeModel()
Destructor.
Definition: TreeModel.cc:72
TreeItem::deleteSubtree
void deleteSubtree()
delete the whole subtree below this item ( The item itself is not touched )
Definition: TreeItem.cc:343
TreeItem::target
bool target()
target
Definition: TreeItem.cc:127
TreeModel::objectAdded
void objectAdded(BaseObject *_object)
The object with the given id has been added. add it to the internal tree.
Definition: TreeModel.cc:426