QTreeWidget里嵌套表格QTableView

  1 InformationPositionSubTableView::InformationPositionSubTableView(QStringList& columnNameList,QList<PositionItem>& positionItemList,QWidget *parent) : m_ColumnNameList(columnNameList), m_PositionItemList(positionItemList),QTableView(parent)
  2 {
  3     m_InformationPositionSubTableModel = new InformationPositionSubTableModel(columnNameList,positionItemList);
  4     this->setModel(m_InformationPositionSubTableModel);
  5     
  6     this->setMouseTracking(true);
  7     this->setFocusPolicy(Qt::NoFocus);
  8     this->setGridStyle(Qt::NoPen);
  9      this->setSelectionBehavior(QAbstractItemView::SelectItems);
 10     this->setSelectionMode(QAbstractItemView::SingleSelection);
 11 
 12     QHeaderView* headerView = new InformationPositionSubHeaderview(Qt::Horizontal,this);
 13     headerView->setSectionsClickable(true);
 14     this->setHorizontalHeader(headerView);
 15     this->horizontalHeader()->setStretchLastSection(true);
 16     this->verticalHeader()->setVisible(false);
 17     
 18     this->setEditTriggers(QAbstractItemView::NoEditTriggers);
 19     this->setContextMenuPolicy(Qt::CustomContextMenu);
 20        
 21     this->resizeColumnsToContents();
 22 //    this->resizeRowsToContents();    //不能加上，否则做为QTreeWidget的子控件会多出一行的间隙;
 23 
 24     this->setFrameShape(QFrame::NoFrame);  //设置成无边框;
 25 
 26     this->horizontalHeader()->setStyleSheet("QHeaderView{background-color:gray;}");    //设置表头背景为灰色(这样也看起来扁平);
 27 }
 28 
 29 InformationPositionSubTableView::~InformationPositionSubTableView()
 30 {
 31 
 32 }
 33 
 34 void InformationPositionSubTableView::mouseMoveEvent(QMouseEvent * event)
 35 {
 36     QModelIndex index = indexAt(event->pos());
 37     if(index.isValid() && index.row()>=0) 
 38     {
 39         this->setSelection(visualRect(index),QItemSelectionModel::SelectCurrent);
 40     }
 41         
 42 }
 43 
 44 ========
 45 
 46 InformationPositionSubTableModel::InformationPositionSubTableModel(QStringList& columnNameList,QList<PositionItem>& positionItemList,QObject *parent) : m_ColumnNameList(columnNameList),m_PositionItemList(positionItemList),QAbstractTableModel(parent)
 47 {
 48     this->m_ColumnNameList = columnNameList;
 49 }
 50 
 51 InformationPositionSubTableModel::~InformationPositionSubTableModel()
 52 {
 53 
 54 }
 55 QVariant InformationPositionSubTableModel::data(const QModelIndex & index, int role) const
 56 {
 57     Q_UNUSED(index);
 58     if(!index.isValid())
 59         return QVariant();
 60     
 61     if(role==Qt::DisplayRole)
 62     {
 63         PositionItem item = m_PositionItemList[index.row()];
 64         int column = index.column();
 65         switch (column)
 66         {
 67         case 0:
 68             return item.GetAccountName();
 69         case 1:
 70             return item.GetBuyLot();
 71         case 2:
 72             return item.GetAvgBuyPrice();
 73         case 3:
 74             return item.GetSellLot();
 75         case 4:
 76             return item.GetAvgSellPrice();
 77         case 5:
 78             return item.GetNet();
 79         default:
 80             return item.GetFloatingMap()[headerData(column,Qt::Horizontal,Qt::DisplayRole).toString()];
 81         }
 82     }
 83     
 84     if(role==Qt::TextAlignmentRole)
 85     {
 86         return Qt::AlignCenter;
 87     }
 88 
 89     if(role==Qt::TextColorRole)
 90     {
 91         if(index.column()==3 || index.column()==5)
 92         {
 93             return QColor(Qt::red);
 94         }
 95         if(index.column()==1)
 96         {
 97             return QColor(Qt::green);
 98         }
 99     }
100 
101     return QVariant();
102 }
103 QVariant InformationPositionSubTableModel::headerData(int section, Qt::Orientation orientation, int role) const
104 {
105     if(role!=Qt::DisplayRole)
106         return  QVariant();
107 
108     if(orientation == Qt::Horizontal)
109     {    
110         return m_ColumnNameList[section];    
111     }
112 
113     return QVariant();
114 }
115 bool InformationPositionSubTableModel::setHeaderData(int section, Qt::Orientation orientation, const QVariant & value, int role)
116 {
117     if(role!=Qt::EditRole)
118         return false;
119     if(orientation == Qt::Horizontal && section >=7)
120     {
121         m_ColumnNameList.append(value.toString());
122         emit headerDataChanged(orientation,section,section);
123         return true;
124     }
125     return false;
126 }
127 
128 int    InformationPositionSubTableModel::rowCount(const QModelIndex & parent) const
129 {
130     int rows = m_PositionItemList.count();
131     return rows;
132 }
133 int    InformationPositionSubTableModel::columnCount(const QModelIndex & parent) const
134 {
135     return m_ColumnNameList.count();
136 }
137 bool InformationPositionSubTableModel::setData(const QModelIndex & index, const QVariant & value, int role)
138 {
139     Q_UNUSED(index);
140     if (index.isValid() && role == Qt::DisplayRole) 
141     {
142         int row = index.row();
143         m_PositionItemList.replace(row, m_UpdatingItem);
144         emit(dataChanged(index, index)); 
145     }
146     return true;    
147 }
148 Qt::ItemFlags InformationPositionSubTableModel::flags(const QModelIndex & index) const
149 {
150      Q_UNUSED(index);
151     if (!index.isValid())
152         return Qt::ItemIsEditable;
153 
154     return QAbstractTableModel::flags(index) | Qt::ItemIsEditable;
155 }
156 
157 bool InformationPositionSubTableModel::insertRow(int position,const QModelIndex &index)
158 {
159     Q_UNUSED(index);
160     beginInsertRows(index, position, position);
161     
162     int count = m_UpdatingItem.GetFloatingMap().count();
163     QMapIterator<QString,float> it(m_UpdatingItem.GetFloatingMap());
164     while(it.hasNext())
165     {
166         it.next();
167         this->AddHeaderSection(it.key());
168     }
169 
170     m_PositionItemList.insert(position,m_UpdatingItem);
171     endInsertRows();
172     return true;
173 }
174 bool InformationPositionSubTableModel::removeRow(int position,const QModelIndex &index)
175 {
176     Q_UNUSED(index);
177     beginRemoveRows(index, position, position);
178     m_PositionItemList.removeAt(position);
179     endRemoveRows();
180     return true;
181 }
182 void InformationPositionSubTableModel::AddHeaderSection(const QString& columnName)
183 {
184     if(!m_ColumnNameList.contains(columnName))
185     {
186         setHeaderData(m_ColumnNameList.count(),Qt::Horizontal,Qt::EditRole);
187         m_ColumnNameList.append(columnName);
188     }
189 }
190 
191 =====
192 
193 
194 InformationPositionSubHeaderview::InformationPositionSubHeaderview(Qt::Orientation orientation,QWidget* parent) : QHeaderView(orientation,parent)
195 {
196     this->setSectionsClickable(false);
197     this->m_IsHided = false;
198 }
199 
200 InformationPositionSubHeaderview::~InformationPositionSubHeaderview()
201 {
202 }
203 
204 void InformationPositionSubHeaderview::paintSection(QPainter *painter, const QRect &rect, int logicalIndex) const
205 {
206     painter->save();
207     QHeaderView::paintSection(painter, rect, logicalIndex); 
208     painter->restore();
209 
210     if(logicalIndex==0 && m_IsHided==false)
211     {        
212         painter->drawText(rect,Qt::AlignRight|Qt::AlignVCenter, "<<");
213     }
214 
215     if(logicalIndex==1 && m_IsHided==true)
216     {
217         QRect leftRect = QRect(rect.x(),rect.y(),HIDEDCOLORBTNWIDTH,rect.height());
218         painter->setBrush(QBrush(Qt::blue));
219         painter->drawRect(leftRect);
220     }
221 
222 }
223 
224 void InformationPositionSubHeaderview::mousePressEvent(QMouseEvent * event)
225 {
226     if(event->button()==Qt::LeftButton) 
227     {
228         QFontMetrics fm(this->font());
229         int textWidth = fm.width("<<");
230 
231         int index = logicalIndexAt(event->pos());
232         int xPos =event->pos().x();
233         int xLeft = sectionPosition(index)+sectionSize(index);
234         if(index==0 && m_IsHided==false && (xPos<xLeft-HIDEDCOLORBTNWIDTH && xPos>xLeft-textWidth) )
235         {
236             setSectionHidden(index,true);
237             m_IsHided = true;
238         }
239         else if(index==1 && m_IsHided==true && xPos<=HIDEDCOLORBTNWIDTH)
240         {
241             setSectionHidden(index-1,false);
242             m_IsHided = false;
243         }
244     }
245     QHeaderView::mousePressEvent(event);
246 }
247 
248 ======
249 
250 InformationPositionTreeView::InformationPositionTreeView(InformationPositionItem& infoItem,QWidget *parent) : QTreeWidget(parent)
251 {
252     m_SubColumnNameList = infoItem.GetColumnNameList();
253     m_SubColumnNameList.removeAt(0);
254     m_SubColumnNameList.replace(0,"Account    ");//多出四个空格，是为"<<"腾出空间;
255 
256     this->Init();
257     this->InitPositionItemListMap(infoItem);
258 
259     int columnNameCount = infoItem.GetColumnNameList().count();
260     this->setHeaderLabels(infoItem.GetColumnNameList()); //增加标题;
261 
262     int count = m_InstrumentStringList.count();
263     for(int i=0;i<count;i++)
264     {
265         QList<PositionItem>  positionItemList = m_PositionItemListMap[m_InstrumentStringList[i]];
266         QStringList summaryList;
267         summaryList << "" << (m_InstrumentStringList[i]) << QString("%0").arg(GetSumValue(positionItemList,"buy")) << QString("%0").arg(GetSumValue(positionItemList,"avgbuy")) << QString("%0").arg(GetSumValue(positionItemList,"sell")) << QString("%0").arg(GetSumValue(positionItemList,"avgsell")) << QString("%0").arg(GetSumValue(positionItemList,"net")) ;
268         QTreeWidgetItem* node = new QTreeWidgetItem(summaryList);
269         this->addTopLevelItem(node);
270 
271         InformationPositionSubTableView* subTableView = new InformationPositionSubTableView(m_SubColumnNameList,m_PositionItemListMap[m_InstrumentStringList[i]],this);
272         QTreeWidgetItem* subItem = new QTreeWidgetItem;
273         node->addChild(subItem);
274         setFirstItemColumnSpanned(subItem,true);
275         setItemWidget(subItem,0,subTableView);
276 
277         int rowHeight = subTableView->verticalHeader()->defaultSectionSize();
278         node->setSizeHint(i,QSize(rowHeight,rowHeight));
279 
280 /////////////--附注：
281 如果要让子tableview的宽度随着行数的变化而变化，却不会出现滚动条的话，应先将其滚动条关闭
282 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
283 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);    
284 然后在此treeWidget中，
285     int subTableItemHeight= subTableView->rowHeight(0);
286     int height = subTableItemHeight+subTableItemHeight*m_PositionItemListMap[m_PositionItemListMap.keys()[subIndex]].count();//算出子table的高度；
287     subTableView->setMaximumHeight(height);
288     subItem->setSizeHint(0,QSize(subTableView->size().width(),height));//改变树节点的宽度
289 //这样，子表就能动态变化而不会高度太大或太小。
290 如果动态变化后发现要出现大小 变化后才能正常显示，可能如下
291 topLevelItem(parentIndex)->setExpanded(false);
292 topLevelItem(parentIndex)->setExpanded(true);
293 即先收起子Treewidgetitem,然后再展开。这只是一种强制其更新的方法。
294 ////////////////
295 
296     
297         node->setIcon(0,QIcon(QPixmap("Fold.png")));
298         m_IsFoldedList.append(true);
299     
300         int id = 0;
301         while(id<columnNameCount)
302             node->setTextAlignment(id++,Qt::AlignCenter);
303 
304     }
305     connect(this,SIGNAL(itemClicked(QTreeWidgetItem*,int)),this,SLOT(ChangeIconSlot(QTreeWidgetItem*,int)));
306 
307 }
308 
309 InformationPositionTreeView::~InformationPositionTreeView()
310 {
311 
312 }
313 void InformationPositionTreeView::mouseMoveEvent(QMouseEvent * event)
314 {
315     QModelIndex index = indexAt(event->pos());
316     if(index.isValid() && index.row()>=0) 
317     {
318         this->setSelection(visualRect(index),QItemSelectionModel::SelectCurrent);
319     }
320         
321 }
322 void InformationPositionTreeView::ChangeIconSlot(QTreeWidgetItem * item, int column)
323 {
324     QIcon icon;
325     bool isNeedExpanded = true;
326     if(column==0 && item->parent()==nullptr)
327     {
328         if(m_IsFoldedList[column])
329         {
330             icon = QIcon(QPixmap("UnFold.png"));
331             isNeedExpanded = true;
332         }
333         else
334         {
335             icon = QIcon(QPixmap("Fold.png"));
336             isNeedExpanded = false;
337         } 
338         item->setIcon(column,icon);
339         m_IsFoldedList.replace(column,!m_IsFoldedList[column]);
340         item->setExpanded(isNeedExpanded);
341     }
342 }
343 void InformationPositionTreeView::Init()
344 {
345 //    this->setMouseTracking(true);
346     this->setFocusPolicy(Qt::NoFocus);
347      this->setSelectionBehavior(QAbstractItemView::SelectRows);
348     this->setSelectionMode(QAbstractItemView::SingleSelection);
349     
350     this->setEditTriggers(QAbstractItemView::NoEditTriggers);
351     this->setContextMenuPolicy(Qt::CustomContextMenu);
352 
353     QHeaderView* headerView = new QHeaderView(Qt::Horizontal,this);    
354     this->setHeader(headerView);
355     headerView->setStretchLastSection(true);
356     headerView->setDefaultAlignment(Qt::AlignCenter);
357     headerView->setSectionsClickable(true);
358     headerView->setSectionResizeMode(QHeaderView::ResizeToContents);
359     
360     
361 
362     this->setStyleSheet("QTreeView::branch {image:none;}"); 
363 //    this->setRootIsDecorated(false);
364 //    this->setItemDelegateForColumn(0,);
365 }
366 void InformationPositionTreeView::InitPositionItemListMap(InformationPositionItem& infoItem)
367 {
368     QList<PositionItem>  positionItemList = infoItem.GetPositionItemList();
369     int count = positionItemList.count();
370     for(int i=0;i<count;i++)
371     {
372         m_InstrumentStringList << positionItemList[i].GetInstrument();
373     }
374 
375     m_InstrumentStringList.removeDuplicates();
376     int keyCount = m_InstrumentStringList.count();
377     for(int i=0;i<keyCount;i++) 
378     {
379         QList<PositionItem> value;
380         for(int j=0;j<count;j++)
381         {
382             if(positionItemList[j].GetInstrument()==m_InstrumentStringList[i])
383                 value.append(positionItemList[j]);
384         }
385         m_PositionItemListMap.insert(m_InstrumentStringList[i],value);
386     }
387 
388 }
389 float InformationPositionTreeView::GetSumValue(const QList<PositionItem>& positionItemList,const QString& itemName)
390 {
391     float sum = 0.0;
392     int count = positionItemList.count();
393     //.....
394 
395     return 2.01;
396 }
397 
398 ======
399 
400 InformationPositionTreeModel::InformationPositionTreeModel(InformationPositionItem& infoItem,QObject * parent):m_InformationPositionItem(infoItem),QAbstractItemModel(parent)
401 {
402 
403 }
404 
405 InformationPositionTreeModel::~InformationPositionTreeModel(void)
406 {
407 }
408 
409 int InformationPositionTreeModel::rowCount(const QModelIndex &parent) const
410 {
411     return m_InformationPositionItem.GetPositionItemList().count();
412 }
413 int InformationPositionTreeModel::columnCount(const QModelIndex &parent) const
414 {
415     return m_InformationPositionItem.GetColumnNameList().count();
416 }
417 QVariant InformationPositionTreeModel::data(const QModelIndex &index, int role) const
418 {
419     if(!index.isValid())
420         return QVariant();
421     
422 
423 
424 
425     if(role==Qt::DisplayRole)
426     {
427         PositionItem item = m_InformationPositionItem.GetPositionItemList()[index.row()];
428         switch (index.column())
429         {
430         case 0:
431             return "";
432         case 1:
433             return item.GetInstrument();
434         case 2:
435             return item.GetBuyLot();
436         case 3:
437             return item.GetAvgBuyPrice();
438         case 4:
439             return item.GetSellLot();
440         case 5:
441             return item.GetAvgSellPrice();
442         case 6:
443             return item.GetNet();
444         default:
445             return item.GetFloatingMap()[headerData(index.column(),Qt::Horizontal,Qt::DisplayRole).toString()];;
446         }
447     }
448     if(role==Qt::DecorationRole && index.column()==0)
449     {
450         return     QIcon(QPixmap("Fold.png"));    
451     }
452     if(role==Qt::TextAlignmentRole)
453     {
454         Qt::AlignCenter;
455     }
456     return QVariant();
457 }
458 QVariant InformationPositionTreeModel::headerData(int section, Qt::Orientation orientation, int role) const
459 {
460     if(orientation == Qt::Horizontal && role == Qt::DisplayRole)
461     {
462         return m_InformationPositionItem.GetColumnNameList()[section];
463     }
464     return QVariant();
465 }
466 Qt::ItemFlags InformationPositionTreeModel::flags(const QModelIndex &index) const
467 {
468    if (!index.isValid())
469         return Qt::ItemIsSelectable;
470 
471    return QAbstractItemModel::flags(index) | Qt::ItemIsSelectable;
472 }
473 bool InformationPositionTreeModel::setData(const QModelIndex &index, const QVariant &value, int role)
474 {
475     if(!index.isValid())
476         return false;
477     return false;
478 }
479 
480 QModelIndex    InformationPositionTreeModel::parent(const QModelIndex & index) const
481 {
482     if(index.isValid())
483         return index.parent();
484     return QModelIndex();
485 }
486 QModelIndex    InformationPositionTreeModel::index(int row, int column, const QModelIndex & parent) const
487 {
488     if(parent.isValid())
489         return parent.child(row,column);
490     return QModelIndex();
491 }
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原文地址：https://www.cnblogs.com/lovebay/p/9328237.html