我需要我的QT应用程序来创建一个表并将该表复制到剪贴板中,以便以后可以将它作为表粘贴到libreoffice Writer或MS Word中。
我的第一个方法是为表创建html代码并使用
将其插入剪贴板QClipboard *clipboard = QApplication::clipboard();
QMimeData *mimeData = new QMimeData();
mimeData->setData("text/html", html.toUtf8());
clipboard->setMimeData(mimeData, QClipboard::Clipboard);
这种方法不起作用。粘贴时,表格单元格只是相互附加并插入而没有格式化。
我使用RTF的第二种方法:
QTextDocument rtfDocument;
rtfDocument.setHtml(html);
但我发现无法将此QTextDocument复制到剪贴板中。有没有? 如果我可以从QTextDocument中获取RTF代码,我可以使用类似
的方式QClipboard *clipboard = QApplication::clipboard();
QMimeData *mimeData = new QMimeData();
mimeData->setData("text/rtf", rtfDocument.getCode());
clipboard->setMimeData(mimeData, QClipboard::Clipboard);
但我也没有找到返回rtf代码的函数。
编辑:
使用上面的最后一个代码框,我有一种将rtf代码复制到剪贴板的工作方式。因此,任何可以创建表示表格的RTF代码的解决方案都可以解决我的问题。
答案 0 :(得分:3)
我不确定您的数据来源是什么,但这里是我们用于子类化普通QTableView
以使其可复制的代码。有些代码已被删除,但您可以获得基本的想法。 RTF / HTML太过分了 - 所有的电子表格都接受了很好的“CSV”。
当然,如果您需要格式化,这个答案将毫无帮助。如果这是一个要求,我不清楚你的问题。
// Escapes a string according to RFC-4180 specification.
static QString csvEscape(const QString &value) {
if (value.contains(QRegExp(QLatin1String("[\"\\n\\r,]")))) {
QString escaped(value);
escaped.replace(QLatin1String("\""), QLatin1String("\"\""));
return QString::fromLatin1("\"%1\"").arg(escaped);
} else {
return value;
}
}
void ClipboardAwareTableView::Copy() const {
QModelIndexList indexes = selectedIndexes();
Q_ASSERT(!indexes.isEmpty());
if(indexes.isEmpty()) {
return;
}
// The default sort is by rows then columns. This is what we want.
qSort(indexes);
// Remember the mapping between model columns and visible columns. This is
// local instead of an instance member because it would need to be invalidated
// any time a column is added, removed, or moved. The minor performance hit
// is worth the simplicity.
QHash<int, int> map_cache;
// Before we start exporting text, we have to know the index of the left-
// most column in our selection range so we can add the appropriate number
// of column separators.
int minimum_column = GetViewColumnIndex(indexes.first().column(), &map_cache);
for (int i = 1; i < indexes.size(); ++i) {
minimum_column =
qMin(minimum_column,
GetViewColumnIndex(indexes.at(i).column(), &map_cache));
}
// Keep track of the previous index so that we know if we need a new line and
// how many column separators to insert. We start with an invalid index.
QModelIndex previous;
QString text;
for (int i = 0; i < indexes.size(); ++i) {
QModelIndex current = indexes.at(i);
// Do we need to add a new line character?
if (previous.isValid() && current.row() != previous.row()) {
text.append(QLatin1String("\n"));
}
// Are we on a new line?
if (!previous.isValid() || current.row() != previous.row()) {
// Add enough separators to get from the minimum to the current column.
text.append(QString::fromLatin1(",")
.repeated(GetViewColumnIndex(current.column(), &map_cache) -
minimum_column));
} else {
// Add enough separators to get from the previous to the current column.
text.append(QString::fromLatin1(",")
.repeated(GetViewColumnIndex(current.column(), &map_cache) -
GetViewColumnIndex(previous.column(), &map_cache)));
}
// Append the text. If the column delegate is a QStyledItemDelegate, we use
// the display text.
QStyledItemDelegate *delegate =
qobject_cast<QStyledItemDelegate*>(
itemDelegateForColumn(current.column()));
if (delegate) {
text.append(csvEscape(delegate->displayText(current.data(), QLocale())));
} else {
text.append(csvEscape(current.data().toString()));
}
previous = current;
}
qApp->clipboard()->setText(text);
}
int ClipboardAwareTableView::GetViewColumnIndex(
int model_column_index,
QHash<int, int> *cached_mappings) const {
if (cached_mappings->contains(model_column_index)) {
return cached_mappings->value(model_column_index);
}
int view_index = 0;
for (int i = 0; i < model()->columnCount(); ++i) {
if (model_column_index == i) {
cached_mappings->insert(model_column_index, view_index);
return view_index;
} else if (!isColumnHidden(i)) {
++view_index;
}
}
throw std::invalid_argument("model_column_index was out of range.");
}
void ClipboardAwareTableView::keyPressEvent(QKeyEvent *event) {
if (event->matches(QKeySequence::Copy) && !selectedIndexes().isEmpty()) {
Copy();
event->accept();
return; // The base class implementation will overwrite the clipboard.
}
event->ignore();
QTableView::keyPressEvent(event);
}
答案 1 :(得分:2)
您可以尝试使用QTextDocument::toHtml()并将mime类型设置为text / html
答案 2 :(得分:0)
我在gedit 1[tab space]2[tab space]3\n4[tab space]5[tab space]6
中写道并将其复制到电子表格中并且有效。所以,我认为如果使用“\ t”分隔行中的单元格而使用“\ n”分隔行,它将起作用。