--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/itemviews/qtreeview_p.h Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,238 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QTREEVIEW_P_H
+#define QTREEVIEW_P_H
+
+//
+// W A R N I N G
+// -------------
+//
+// This file is not part of the Qt API. It exists purely as an
+// implementation detail. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "private/qabstractitemview_p.h"
+#include <QtCore/qvariantanimation.h>
+
+#ifndef QT_NO_TREEVIEW
+
+QT_BEGIN_NAMESPACE
+
+struct QTreeViewItem
+{
+ QTreeViewItem() : expanded(false), spanning(false), total(0), level(0), height(0) {}
+ QModelIndex index; // we remove items whenever the indexes are invalidated
+ uint expanded : 1;
+ uint spanning : 1;
+ uint total : 30; // total number of children visible
+ uint level : 16; // indentation
+ int height : 16; // row height
+};
+
+class QTreeViewPrivate : public QAbstractItemViewPrivate
+{
+ Q_DECLARE_PUBLIC(QTreeView)
+public:
+
+ QTreeViewPrivate()
+ : QAbstractItemViewPrivate(),
+ header(0), indent(20), lastViewedItem(0), defaultItemHeight(-1),
+ uniformRowHeights(false), rootDecoration(true),
+ itemsExpandable(true), sortingEnabled(false),
+ expandsOnDoubleClick(true),
+ allColumnsShowFocus(false), current(0), spanning(false),
+ animationsEnabled(false), columnResizeTimerID(0),
+ autoExpandDelay(-1), hoverBranch(-1), geometryRecursionBlock(false) {}
+
+ ~QTreeViewPrivate() {}
+ void initialize();
+
+ QItemViewPaintPairs draggablePaintPairs(const QModelIndexList &indexes, QRect *r) const;
+
+#ifndef QT_NO_ANIMATION
+ struct AnimatedOperation : public QVariantAnimation
+ {
+ int item;
+ QPixmap before;
+ QPixmap after;
+ QWidget *viewport;
+ AnimatedOperation() : item(0) { setEasingCurve(QEasingCurve::InOutQuad); }
+ int top() const { return startValue().toInt(); }
+ QRect rect() const { QRect rect = viewport->rect(); rect.moveTop(top()); return rect; }
+ void updateCurrentValue(const QVariant &) { viewport->update(rect()); }
+ void updateState(State, State state) { if (state == Stopped) before = after = QPixmap(); }
+ } animatedOperation;
+ void prepareAnimatedOperation(int item, QVariantAnimation::Direction d);
+ void beginAnimatedOperation();
+ void drawAnimatedOperation(QPainter *painter) const;
+ QPixmap renderTreeToPixmapForAnimation(const QRect &rect) const;
+ void _q_endAnimatedOperation();
+#endif //QT_NO_ANIMATION
+
+ void expand(int item, bool emitSignal);
+ void collapse(int item, bool emitSignal);
+
+ void _q_columnsAboutToBeRemoved(const QModelIndex &, int, int);
+ void _q_columnsRemoved(const QModelIndex &, int, int);
+ void _q_modelAboutToBeReset();
+ void _q_sortIndicatorChanged(int column, Qt::SortOrder order);
+ void _q_modelDestroyed();
+
+ void layout(int item);
+
+ int pageUp(int item) const;
+ int pageDown(int item) const;
+
+ int itemHeight(int item) const;
+ int indentationForItem(int item) const;
+ int coordinateForItem(int item) const;
+ int itemAtCoordinate(int coordinate) const;
+
+ int viewIndex(const QModelIndex &index) const;
+ QModelIndex modelIndex(int i, int column = 0) const;
+
+ int firstVisibleItem(int *offset = 0) const;
+ int columnAt(int x) const;
+ bool hasVisibleChildren( const QModelIndex& parent) const;
+
+ void relayout(const QModelIndex &parent);
+ bool expandOrCollapseItemAtPos(const QPoint &pos);
+
+ void updateScrollBars();
+
+ int itemDecorationAt(const QPoint &pos) const;
+ QRect itemDecorationRect(const QModelIndex &index) const;
+
+
+ QList<QPair<int, int> > columnRanges(const QModelIndex &topIndex, const QModelIndex &bottomIndex) const;
+ void select(const QModelIndex &start, const QModelIndex &stop, QItemSelectionModel::SelectionFlags command);
+
+ QPair<int,int> startAndEndColumns(const QRect &rect) const;
+
+ void updateChildCount(const int parentItem, const int delta);
+ void rowsRemoved(const QModelIndex &parent,
+ int start, int end, bool before);
+
+ void paintAlternatingRowColors(QPainter *painter, QStyleOptionViewItemV4 *option, int y, int bottom) const;
+
+ QHeaderView *header;
+ int indent;
+
+ mutable QVector<QTreeViewItem> viewItems;
+ mutable int lastViewedItem;
+ int defaultItemHeight; // this is just a number; contentsHeight() / numItems
+ bool uniformRowHeights; // used when all rows have the same height
+ bool rootDecoration;
+ bool itemsExpandable;
+ bool sortingEnabled;
+ bool expandsOnDoubleClick;
+ bool allColumnsShowFocus;
+
+ // used for drawing
+ mutable QPair<int,int> leftAndRight;
+ mutable int current;
+ mutable bool spanning;
+
+ // used when expanding and collapsing items
+ QSet<QPersistentModelIndex> expandedIndexes;
+ bool animationsEnabled;
+
+ inline bool storeExpanded(const QPersistentModelIndex &idx) {
+ if (expandedIndexes.contains(idx))
+ return false;
+ expandedIndexes.insert(idx);
+ return true;
+ }
+
+ inline bool isIndexExpanded(const QModelIndex &idx) const {
+ //We first check if the idx is a QPersistentModelIndex, because creating QPersistentModelIndex is slow
+ return isPersistent(idx) && expandedIndexes.contains(idx);
+ }
+
+ // used when hiding and showing items
+ QSet<QPersistentModelIndex> hiddenIndexes;
+
+ inline bool isRowHidden(const QModelIndex &idx) const {
+ //We first check if the idx is a QPersistentModelIndex, because creating QPersistentModelIndex is slow
+ return isPersistent(idx) && hiddenIndexes.contains(idx);
+ }
+
+ inline bool isItemHiddenOrDisabled(int i) const {
+ if (i < 0 || i >= viewItems.count())
+ return false;
+ const QModelIndex index = viewItems.at(i).index;
+ return isRowHidden(index) || !isIndexEnabled(index);
+ }
+
+ inline int above(int item) const
+ { int i = item; while (isItemHiddenOrDisabled(--item)){} return item < 0 ? i : item; }
+ inline int below(int item) const
+ { int i = item; while (isItemHiddenOrDisabled(++item)){} return item >= viewItems.count() ? i : item; }
+ inline void invalidateHeightCache(int item) const
+ { viewItems[item].height = 0; }
+
+ // used for spanning rows
+ QVector<QPersistentModelIndex> spanningIndexes;
+
+ // used for updating resized columns
+ int columnResizeTimerID;
+ QList<int> columnsToUpdate;
+
+ // used for the automatic opening of nodes during DND
+ int autoExpandDelay;
+ QBasicTimer openTimer;
+
+ // used for drawing hilighted expand/collapse indicators
+ int hoverBranch;
+
+ // used for blocking recursion when calling setViewportMargins from updateGeometries
+ bool geometryRecursionBlock;
+};
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_TREEVIEW
+
+#endif // QTREEVIEW_P_H