kde-extraapps/kdevplatform/util/focusedtreeview.cpp
2015-07-26 14:23:17 +03:00

63 lines
2.1 KiB
C++

/*
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "focusedtreeview.h"
#include <QScrollBar>
namespace KDevelop {
FocusedTreeView::FocusedTreeView(QWidget* parent) : QTreeView(parent) {
setVerticalScrollMode(ScrollPerItem);
connect(verticalScrollBar(), SIGNAL(valueChanged(int)), SLOT(resizeColumnsToContents()));
}
int FocusedTreeView::sizeHintForColumn(int column) const {
QModelIndex i = indexAt(QPoint(0, 0));
if(i.isValid()) {
QSize hint = sizeHintForIndex(i);
int maxWidth = hint.width();
if(hint.height()) {
//Also consider one item above, because else we can get problems with
//the vertical scroll-bar
for(int a = -1; a < (height() / hint.height())+1; ++a) {
QModelIndex current = i.sibling(i.row()+a, column);
QSize tempHint = sizeHintForIndex(current);
if(tempHint.width() > maxWidth)
maxWidth = tempHint.width();
}
}
return maxWidth;
}
return columnWidth(column);
}
void FocusedTreeView::resizeColumnsToContents() {
if (!model()) {
// might happen on shutdown
return;
}
for(int a = 0; a < model()->columnCount(); ++a)
resizeColumnToContents(a);
}
void FocusedTreeView::rowsInserted(const QModelIndex& parent, int start, int end) {
QTreeView::rowsInserted(parent, start, end);
resizeColumnsToContents();
}
}
#include "moc_focusedtreeview.cpp"