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Clipboard improvements: HTML and avoid pasting image from LibreCalc

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Both "Copy" and "Copy with Headers" write in HTML and text format to the
system clipboard, when the selection includes more than one cell. This lets
the pasting application choose the most appropriate format.

Images have now no precedence over text when requesting the clipboard
content, so pasting from applications like LibreCalc, that set both formats
in the clipboard, works as expected, instead of pasting an image of the
copied text.

Copying and pasting inside the DB4S should not be affected, since the
application requests the text format and uses the internal buffer when
necessary (binary data included).

Related issue: #1058
This commit is contained in:
mgrojo
2017-11-18 21:38:50 +01:00
parent 28d53ef990
commit e60e9ffc75
1 changed files with 43 additions and 16 deletions
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59
src/ExtendedTableWidget.cpp
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@@ -6,6 +6,7 @@
#include <QApplication>
#include <QClipboard>
#include <QMimeData>
#include <QKeySequence>
#include <QKeyEvent>
#include <QScrollBar>
@@ -163,7 +164,7 @@ void ExtendedTableWidget::copy(const bool withHeaders)
m_buffer.clear();
// If a single cell is selected, copy it to clipboard
if (indices.size() == 1) {
if (!withHeaders && indices.size() == 1) {
QImage img;
QVariant data = m->data(indices.first(), Qt::EditRole);
@@ -183,8 +184,6 @@ void ExtendedTableWidget::copy(const bool withHeaders)
if (text.contains('\n'))
text = QString("\"%1\"").arg(text);
if (withHeaders)
text.prepend(model()->headerData(indices.front().column(), Qt::Horizontal, Qt::DisplayRole).toString() + "\r\n");
qApp->clipboard()->setText(text);
return;
}
@@ -216,30 +215,52 @@ void ExtendedTableWidget::copy(const bool withHeaders)
return;
}
// Multiple cells case: write a table both in HTML and text formats to clipboard
QModelIndex first = indices.first();
QString result;
QString htmlResult = "<html><header><style>br{mso-data-placement:same-cell;}</style></header><body><table>";
int currentRow = 0;
const QString fieldSepHtml = "</td><td>";
const QString rowSepHtml = "</td></tr><tr><td>";
const QString fieldSepText = "\t";
const QString rowSepText = "\r\n";
// Table headers
if (withHeaders) {
htmlResult.append("<tr><th>");
int firstColumn = indices.front().column();
for(int i = firstColumn; i <= indices.back().column(); i++) {
QString headerText = model()->headerData(i, Qt::Horizontal, Qt::DisplayRole).toString();
if (i != firstColumn)
result.append("\t");
if (i != firstColumn) {
result.append(fieldSepText);
htmlResult.append("</th><th>");
}
result.append(QString("\"%1\"").arg(headerText));
htmlResult.append(headerText);
}
result.append("\r\n");
result.append(rowSepText);
htmlResult.append("</th></tr>");
}
for(const QModelIndex& index : indices) {
if (first == index) { /* first index */ }
else if (index.row() != currentRow)
result.append("\r\n");
else
result.append("\t");
// Table data rows
for(const QModelIndex& index : indices) {
// Separators
if (first == index)
htmlResult.append("<tr><td>");
else if (index.row() != currentRow) {
result.append(rowSepText);
htmlResult.append(rowSepHtml);
} else {
result.append(fieldSepText);
htmlResult.append(fieldSepHtml);
}
currentRow = index.row();
QVariant data = index.data(Qt::EditRole);
// Table cell data
htmlResult.append(data.toString().toHtmlEscaped());
// non-NULL data is enquoted, whilst NULL isn't
if (!data.isNull()) {
QString text = data.toString();
@@ -248,7 +269,11 @@ void ExtendedTableWidget::copy(const bool withHeaders)
}
}
qApp->clipboard()->setText(result);
QMimeData *mimeData = new QMimeData;
mimeData->setHtml(htmlResult + "</td></tr></table></body></html>");
mimeData->setText(result);
qApp->clipboard()->setMimeData(mimeData);
}
void ExtendedTableWidget::paste()
@@ -263,9 +288,11 @@ void ExtendedTableWidget::paste()
SqliteTableModel* m = qobject_cast<SqliteTableModel*>(model());
// If clipboard contains image - just insert it
QImage img = qApp->clipboard()->image();
if (!img.isNull()) {
// If clipboard contains image and not text - just insert the image
const QMimeData* mimeClipboard = qApp->clipboard()->mimeData();
if (mimeClipboard->hasImage() && !mimeClipboard->hasText()) {
QImage img = qApp->clipboard()->image();
QByteArray ba;
QBuffer buffer(&ba);
buffer.open(QIODevice::WriteOnly);