我有一个 var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getSheets()[0];
var range = sheet.getRange("A1:C7");
// Sorts by the values in the first column (A)
range.sort(1);
// Sorts by the values in the second column (B)
range.sort(2);
// Sorts descending by column B
range.sort({column: 2, ascending: false});
// Sorts descending by column B, then ascending by column A
// Note the use of an array
range.sort([{column: 2, ascending: false}, {column: 1, ascending: true}]);
// For rows that are sorted in ascending order, the "ascending" parameter is
// optional, and just an integer with the column can be used instead. Note that
// in general, keeping the sort specification consistent results in more readable
// code. We could have expressed the earlier sort as:
range.sort([{column: 2, ascending: false}, 1]);
// Alternatively, if we wanted all columns to be in ascending order, we would use
// the following (this would make column 2 ascending)
range.sort([2, 1]);
// ... which is equivalent to
range.sort([{column: 2, ascending: true}, {column: 1, ascending: true}]);
,我想显示一个带有进度条和其他一些字段的简单小部件(可能还有一些上下文菜单,但目前我只想显示小部件)。该列表下面有一个模型,模型成功地将一个字符串传递给列表,没有委托,一切正常。
现在使用委托,QListView
方法从不调用。我不明白为什么。我不需要画画,但我只是覆盖了createEditor()
和paint()
以查看它们是否被调用,而且它们是。
我在sizeHint()
上看到的基本上是简单的文字项目。小部件永远不会显示(当然,因为永远不会调用QListView
)。
以下是我的代表......非常基本!
createEditor()
和来源(也非常基本和最小):
class FileQueueItemDelegate : public QStyledItemDelegate
{
Q_OBJECT
public:
FileQueueItemDelegate(QObject *parent = 0);
QWidget* createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const override;
void setEditorData(QWidget *editor, const QModelIndex &index) const override;
void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const override;
void updateEditorGeometry(QWidget *editor,
const QStyleOptionViewItem &option,
const QModelIndex &index) const override;
void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
QSize sizeHint(const QStyleOptionViewItem &option,
const QModelIndex &index) const override;
};
我可以看到#include "FileQueueItemDelegate.h"
FileQueueItemDelegate::FileQueueItemDelegate(QObject *parent) : QStyledItemDelegate(parent)
{
}
QWidget *FileQueueItemDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
std::cout<<"Creating editor..."<<std::endl;
FileQueueListItem* item = new FileQueueListItem(parent);
return item;
}
void FileQueueItemDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const
{
std::cout<<"Setting editor data..."<<std::endl;
FileQueueListItem* editorPtr = dynamic_cast<FileQueueListItem*>(editor);
QVariant dataResult = index.model()->data(index, Qt::DisplayRole);
editorPtr->setFilename(dataResult.toString());
}
void FileQueueItemDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
{
std::cout<<"Setting model data..."<<std::endl;
}
void FileQueueItemDelegate::updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
std::cout<<"Updating editor geometry..."<<std::endl;
editor->setGeometry(option.rect);
}
void FileQueueItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
std::cout<<"Painting..."<<std::endl;
QStyledItemDelegate::paint(painter, option, index);
}
QSize FileQueueItemDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
{
std::cout<<"Size hint..."<<std::endl;
return QStyledItemDelegate::sizeHint(option, index);
}
和paint()
的照片,但不能看到其他照片(永远)。
以下是我的sizeHint()
类的构造函数(我从中继承了它):
QListView
以下是其定义:
FilesQueueQList::FilesQueueQList(FilesQueue* queueObjectPtr)
{
this->internal_queue = queueObjectPtr;
this->setModel(internal_queue);
itemDelegate = new FileQueueItemDelegate(this);
this->setItemDelegate(itemDelegate);
}
最后,这是模型中的class FilesQueueQList : public QListView
{
Q_OBJECT
FilesQueue* internal_queue; //this inherits from QAbstractListModel
FileQueueItemDelegate* itemDelegate;
//...
}
方法:
data()
请协助。如果您需要更多信息,请告诉我。我一直在努力让这个工作没有任何成功。我想要的只是让小部件(QVariant FilesQueue::data(const QModelIndex &index, int role) const
{
std::cout<<"Loading data of "<<index.row()<< " "<<index.column()<<std::endl;
if ( role == Qt::DisplayRole ) {
return filesQueue[index.row()]->getFilename();
}
if(role == Qt::EditRole) {
return filesQueue[index.row()]->getFilename(); //QString this is
}
return QVariant();
}
)显示在列表中。
答案 0 :(得分:3)
您尚未实施FilesQueue::flags(const QModelIndex &index) const
。
默认实现使单元格仅启用并可选择。
请参阅documentation。