mirror/sqlitebrowser
1
0
Fork 0
mirror of https://github.com/sqlitebrowser/sqlitebrowser.git synced 2026-01-20 02:50:46 -06:00
Code Issues Packages Projects Releases Wiki Activity

Multi-threading patch

Browse Source 
This was done by Michael Krause.
https://lists.sqlitebrowser.org/pipermail/db4s-dev/2018-February/000305.html

In this commit I only fixed two compiler warnings, some whitespace
issues and removed some debug messages.
This commit is contained in:
Martin Kleusberg
2018-05-21 18:13:56 +02:00
parent 9c2cec628b
commit 51dbe72e23
19 changed files with 1466 additions and 344 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
src/ExtendedTableWidget.cpp
View File

@@ -1,3 +1,5 @@
#include <iostream>
#include "ExtendedTableWidget.h"
#include "sqlitetablemodel.h"
#include "FilterTableHeader.h"
@@ -604,19 +606,29 @@ void ExtendedTableWidget::updateGeometries()
// If so and if it is a SqliteTableModel and if the parent implementation of this method decided that a scrollbar is needed, update its maximum value
SqliteTableModel* m = qobject_cast<SqliteTableModel*>(model());
if(m && verticalScrollBar()->maximum())
verticalScrollBar()->setMaximum(m->totalRowCount() - numVisibleRows() + 1);
verticalScrollBar()->setMaximum(m->rowCount() - numVisibleRows() + 1);
}
}
void ExtendedTableWidget::vscrollbarChanged(int value)
{
//std::cout << "ExtendedTableWidget::vscrollbarChanged " << value << std::endl;
// Cancel if there is no model set yet - this shouldn't happen (because without a model there should be no scrollbar) but just to be sure...
if(!model())
return;
// Fetch more data from the DB if necessary
if((value + numVisibleRows()) >= model()->rowCount() && model()->canFetchMore(QModelIndex()))
model()->fetchMore(QModelIndex());
const auto nrows = model()->rowCount();
if(nrows == 0)
return;
if(auto * m = dynamic_cast<SqliteTableModel*>(model()))
{
int row_begin = std::min(value, nrows - 1);
int row_end = std::min(value + numVisibleRows(), nrows);
m->triggerCacheLoad(row_begin, row_end);
}
}
int ExtendedTableWidget::numVisibleRows()
@@ -682,13 +694,11 @@ void ExtendedTableWidget::selectTableLine(int lineToSelect)
SqliteTableModel* m = qobject_cast<SqliteTableModel*>(model());
// Are there even that many lines?
if(lineToSelect >= m->totalRowCount())
if(lineToSelect >= m->rowCount())
return;
QApplication::setOverrideCursor( Qt::WaitCursor );
// Make sure this line has already been fetched
while(lineToSelect >= m->rowCount() && m->canFetchMore())
m->fetchMore();
m->triggerCacheLoad(lineToSelect);
// Select it
clearSelection();
@@ -703,7 +713,7 @@ void ExtendedTableWidget::selectTableLines(int firstLine, int count)
int lastLine = firstLine+count-1;
// Are there even that many lines?
if(lastLine >= m->totalRowCount())
if(lastLine >= m->rowCount())
return;
selectTableLine(firstLine);