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Natural sorting fix: assure that directories are sorted always before files as Ellen has recommended. One minor issue is left: when the sort order is descending, the natural sorting result is:

Browse Source 
item 10.jpg
 item 11.jpg
 item 2.jpg
 item 1.jpg
instead of
 item 11.jpg
 item 10.jpg
 item 2.jpg
 item 1.jpg

svn path=/trunk/playground/utils/dolphin/; revision=622751
This commit is contained in:
Peter Penz 2007-01-12 20:24:23 +00:00
parent 2d89b70bdf
commit 71c0a43490
2 changed files with 49 additions and 30 deletions
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65
src/dolphinsortfilterproxymodel.cpp
View File

@ -62,6 +62,12 @@ void DolphinSortFilterProxyModel::setSorting(DolphinView::Sorting sorting)
m_sortOrder );
}
void DolphinSortFilterProxyModel::setSortOrder(Qt::SortOrder sortOrder)
{
// change the sort order by keeping the current column
sort(dolphinViewToDirModelColumn[m_sorting], sortOrder);
}
void DolphinSortFilterProxyModel::sort(int column, Qt::SortOrder sortOrder)
{
m_sortOrder = sortOrder;
@ -71,13 +77,41 @@ void DolphinSortFilterProxyModel::sort(int column, Qt::SortOrder sortOrder)
QSortFilterProxyModel::sort(column,sortOrder);
}
void DolphinSortFilterProxyModel::setSortOrder(Qt::SortOrder sortOrder)
bool DolphinSortFilterProxyModel::lessThan(const QModelIndex& left,
const QModelIndex& right) const
{
// change the sort order by keeping the current column
sort(dolphinViewToDirModelColumn[m_sorting], sortOrder);
KDirModel* dirModel = static_cast<KDirModel*>(sourceModel());
QVariant leftData = dirModel->data(left, sortRole());
QVariant rightData = dirModel->data(right, sortRole());
if ((leftData.type() == QVariant::String) && (rightData.type() == QVariant::String)) {
const QString leftStr = leftData.toString();
const QString rightStr = rightData.toString();
const bool leftIsDir = dirModel->itemForIndex(left)->isDir();
const bool rightIsDir = dirModel->itemForIndex(right)->isDir();
// assure that directories are always sorted before files
if (leftIsDir && !rightIsDir) {
return true;
}
if (!leftIsDir && rightIsDir) {
return false;
}
return sortCaseSensitivity() ? (naturalCompare(leftStr, rightStr) < 0) :
(naturalCompare(leftStr.toLower(), rightStr.toLower()) < 0);
}
// We have set a SortRole and trust the ProxyModel to do
// the right thing for now.
return QSortFilterProxyModel::lessThan(left, right);
}
static int naturalCompare(const QString& a, const QString& b)
int DolphinSortFilterProxyModel::naturalCompare(const QString& a,
const QString& b) const
{
// This method chops the input a and b into pieces of
// digits and non-digits (a1.05 becomes a | 1 | . | 05)
@ -124,7 +158,7 @@ static int naturalCompare(const QString& a, const QString& b)
if ((*currA == '0') || (*currB == '0')) {
// one digit-sequence starts with 0 -> assume we are in a fraction part
// do left aligned comparison (numbers are considered left aligend)
while ( 1 ) {
while (1) {
if (!currA->isDigit() && !currB->isDigit()) {
break;
}
@ -190,25 +224,4 @@ static int naturalCompare(const QString& a, const QString& b)
return currA->isNull() ? -1 : +1;
}
bool DolphinSortFilterProxyModel::lessThan(const QModelIndex& left,
const QModelIndex& right) const
{
QVariant leftData = sourceModel()->data(left, sortRole());
QVariant rightData = sourceModel()->data(right, sortRole());
if (leftData.type() == QVariant::String && rightData.type() == QVariant::String) {
const QString left = leftData.toString();
const QString right = rightData.toString();
return sortCaseSensitivity() ? (naturalCompare(left, right) < 0) :
(naturalCompare(left.toLower(), right.toLower()) < 0);
}
// We have set a SortRole and trust the ProxyModel to do
// the right thing for now.
return QSortFilterProxyModel::lessThan(left,right);
}
#include "dolphinsortfilterproxymodel.moc"

14
src/dolphinsortfilterproxymodel.h
View File

@ -35,6 +35,8 @@
* - item_1.png
* - item_2.png
* - item_10.png
*
* It is assured that directories are always sorted before files.
*/
class DolphinSortFilterProxyModel : public QSortFilterProxyModel
{
@ -47,21 +49,25 @@ public:
void setSorting(DolphinView::Sorting sorting);
DolphinView::Sorting sorting() const { return m_sorting; }
void setSortOrder(Qt::SortOrder sortOrder);
Qt::SortOrder sortOrder() const { return m_sortOrder; }
/**
* @reimplemented, @internal
*
* If the view 'forces' sorting order to change we will
* notice now.
*/
virtual void sort (int column,
Qt::SortOrder order = Qt::AscendingOrder);
void setSortOrder(Qt::SortOrder sortOrder);
Qt::SortOrder sortOrder() const { return m_sortOrder; }
virtual void sort(int column,
Qt::SortOrder order = Qt::AscendingOrder);
protected:
virtual bool lessThan(const QModelIndex& left,
const QModelIndex& right) const;
private:
int naturalCompare(const QString& a, const QString& b) const;
private:
DolphinView::Sorting m_sorting;
Qt::SortOrder m_sortOrder;