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Print: improve table printing by using QTableView

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The current QTextDocument implementation is slow due to
HTML parsing. By using QTableView with QAbstractTableModel
we boost the performance of the table print drastically.
This patch completely replaces the old solution.

There is a hidden QTableView widget which is populated
with all data and rendered using a QPainter attached to
the printer device.

A couple of new classes are added in models.h/cpp
that handle the table print model and these are then used
in printlayout.h/cpp.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Lubomir I. Ivanov 2013-07-25 12:52:20 +03:00 • committed by Dirk Hohndel
parent 1f976371bf
commit e5b18db802
4 changed files with 259 additions and 132 deletions
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106
qt-ui/models.cpp
View file

@ -1438,3 +1438,109 @@ void YearlyStatisticsModel::update_yearly_stats()
item->parent = rootItem;
}
}
/*#################################################################
* #
* # Table Print Model
* #
* ################################################################
*/
TablePrintModel::TablePrintModel()
{
columns = 7;
rows = 0;
}
TablePrintModel::~TablePrintModel()
{
for (int i = 0; i < list.size(); i++)
delete list.at(i);
}
void TablePrintModel::insertRow(int index)
{
struct TablePrintItem *item = new struct TablePrintItem();
item->colorBackground = 0xffffffff;
if (index == -1) {
beginInsertRows(QModelIndex(), rows, rows);
list.append(item);
} else {
beginInsertRows(QModelIndex(), index, index);
list.insert(index, item);
}
endInsertRows();
rows++;
}
void TablePrintModel::callReset()
{
reset();
}
QVariant TablePrintModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid())
return QVariant();
if (role == Qt::BackgroundRole)
return QColor(list.at(index.row())->colorBackground);
if (role == Qt::DisplayRole)
switch (index.column()) {
case 0:
return list.at(index.row())->number;
case 1:
return list.at(index.row())->date;
case 2:
return list.at(index.row())->depth;
case 3:
return list.at(index.row())->duration;
case 4:
return list.at(index.row())->divemaster;
case 5:
return list.at(index.row())->buddy;
case 6:
return list.at(index.row())->location;
}
return QVariant();
}
bool TablePrintModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
if (index.isValid()) {
if (role == Qt::DisplayRole) {
switch (index.column()) {
case 0:
list.at(index.row())->number = value.toString();
case 1:
list.at(index.row())->date = value.toString();
case 2:
list.at(index.row())->depth = value.toString();
case 3:
list.at(index.row())->duration = value.toString();
case 4:
list.at(index.row())->divemaster = value.toString();
case 5:
list.at(index.row())->buddy = value.toString();
case 6:
list.at(index.row())->location = value.toString();
}
return true;
}
if (role == Qt::BackgroundRole) {
list.at(index.row())->colorBackground = value.value<unsigned int>();
return true;
}
}
return false;
}
int TablePrintModel::rowCount(const QModelIndex &parent) const
{
Q_UNUSED(parent);
return rows;
}
int TablePrintModel::columnCount(const QModelIndex &parent) const
{
Q_UNUSED(parent);
return columns;
}