1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
/* This file is part of KDevelop
*
* Copyright 2009 David Nolden <david.nolden.kdevelop@art-master.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#ifndef KDEVPLATFORM_FOCUSEDTREEVIEW_H
#define KDEVPLATFORM_FOCUSEDTREEVIEW_H
#include <QTreeView>
#include "utilexport.h"
namespace KDevelop {
class FocusedTreeViewPrivate;
/**
* Specialized version of QTreeView, that allows efficiently managing an extremely
* long list of items, by focusing the size of the horizontal scroll-bars only on the currently
* visible items.
*
* In addition, this class provides optional automatic scrolling when rows are inserted at the end.
*
* @warning Either the scroll-mode ScrollPerItem must be enabled, or the uniformRowHeight flag, for this to work efficiently.
* @warning This currently only works with flat list models(todo).
*/
class KDEVPLATFORMUTIL_EXPORT FocusedTreeView : public QTreeView
{
Q_OBJECT
public:
explicit FocusedTreeView(QWidget* parent);
~FocusedTreeView() override;
/**
* When enabled, automatically scroll to bottom when new rows are inserted at the end
* and the end was previously visible. (Default: false)
*/
void setAutoScrollAtEnd(bool enable);
void setModel(QAbstractItemModel* model) override;
int sizeHintForColumn(int column) const override;
private Q_SLOTS:
void rowsAboutToBeInserted(const QModelIndex& parent, int first, int last);
void rowsRemoved(const QModelIndex& parent, int first, int last);
void delayedAutoScrollAndResize();
private:
const QScopedPointer<class FocusedTreeViewPrivate> d_ptr;
Q_DECLARE_PRIVATE(FocusedTreeView)
};
}
#endif // KDEVPLATFORM_FOCUSEDLISTVIEW_H
|
