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Improve speed of preview table for large fields in Import CSV dialog

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See issue #720.
This commit is contained in:
Martin Kleusberg
2017-09-29 23:21:39 +02:00
parent bbc4ad5b19
commit 1666bb5606
1 changed files with 6 additions and 2 deletions
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8
src/ImportCsvDialog.cpp
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@@ -260,11 +260,15 @@ void ImportCsvDialog::updatePreview()
if(i == 0)
ui->tablePreview->setVerticalHeaderItem(rowNum, new QTableWidgetItem(QString::number(rowNum + 1)));
// Add table item
// Add table item. Limit data length to a maximum character count to avoid a sluggish UI. And it's very unlikely that this
// many characters are going to be needed anyway for a preview.
int data_length = data.fields[i].data_length;
if(data_length > 1024)
data_length = 1024;
ui->tablePreview->setItem(
rowNum,
i,
new QTableWidgetItem(QString::fromUtf8(data.fields[i].data, data.fields[i].data_length)));
new QTableWidgetItem(QString::fromUtf8(data.fields[i].data, data_length)));
}
return true;