src/gui/itemviews/qtableview_p.h
changeset 0 1918ee327afb
child 3 41300fa6a67c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/itemviews/qtableview_p.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,253 @@
+/****************************************************************************
+**
+** 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 QTABLEVIEW_P_H
+#define QTABLEVIEW_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 <QtCore/QList>
+#include <QtCore/QLinkedList>
+#include <QtCore/QMap>
+#include <QtCore/QSet>
+#include <QtCore/QDebug>
+#include "private/qabstractitemview_p.h"
+
+#ifndef QT_NO_TABLEVIEW
+
+QT_BEGIN_NAMESPACE
+
+/** \internal
+*
+* This is a list of span with a binary index to look up quickly a span at a certain index.
+*
+* The index is a map of map.
+* spans are mentaly divided into sub spans so that the start of any subspans doesn't overlap
+* with any other subspans. There is no real representation of the subspans.
+* The key of the first map is the row where the subspan starts, the value of the first map is
+* a list (map) of all subspans that starts at the same row.  It is indexed with its row
+*/
+class QSpanCollection
+{
+public:
+    struct Span
+    {
+        int m_top;
+        int m_left;
+        int m_bottom;
+        int m_right;
+        bool will_be_deleted;
+        Span()
+        : m_top(-1), m_left(-1), m_bottom(-1), m_right(-1), will_be_deleted(false) { }
+        Span(int row, int column, int rowCount, int columnCount)
+        : m_top(row), m_left(column), m_bottom(row+rowCount-1), m_right(column+columnCount-1), will_be_deleted(false) { }
+        inline int top() const { return m_top; }
+        inline int left() const { return m_left; }
+        inline int bottom() const { return m_bottom; }
+        inline int right() const { return m_right; }
+        inline int height() const { return m_bottom - m_top + 1; }
+        inline int width() const { return m_right - m_left + 1; }
+    };
+
+    ~QSpanCollection()
+    {
+        qDeleteAll(spans);
+    }
+
+    void addSpan(Span *span);
+    void updateSpan(Span *span, int old_height);
+    Span *spanAt(int x, int y) const;
+    void clear();
+    QList<Span *> spansInRect(int x, int y, int w, int h) const;
+
+    void updateInsertedRows(int start, int end);
+    void updateInsertedColumns(int start, int end);
+    void updateRemovedRows(int start, int end);
+    void updateRemovedColumns(int start, int end);
+
+    typedef QLinkedList<Span *> SpanList;
+    SpanList spans; //lists of all spans
+private:
+    //the indexes are negative so the QMap::lowerBound do what i need.
+    typedef QMap<int, Span *> SubIndex;
+    typedef QMap<int, SubIndex> Index;
+    Index index;
+
+    bool cleanSpanSubIndex(SubIndex &subindex, int end, bool update = false);
+};
+
+Q_DECLARE_TYPEINFO ( QSpanCollection::Span, Q_MOVABLE_TYPE);
+
+
+class QTableViewPrivate : public QAbstractItemViewPrivate
+{
+    Q_DECLARE_PUBLIC(QTableView)
+public:
+    QTableViewPrivate()
+        : showGrid(true), gridStyle(Qt::SolidLine),
+          rowSectionAnchor(-1), columnSectionAnchor(-1),
+          columnResizeTimerID(0), rowResizeTimerID(0),
+          horizontalHeader(0), verticalHeader(0),
+          sortingEnabled(false), geometryRecursionBlock(false),
+          visualCursor(QPoint())
+ {
+    wrapItemText = true;
+#ifndef QT_NO_DRAGANDDROP
+    overwrite = true;
+#endif
+ }
+    void init();
+    void trimHiddenSelections(QItemSelectionRange *range) const;
+
+    inline bool isHidden(int row, int col) const {
+        return verticalHeader->isSectionHidden(row)
+            || horizontalHeader->isSectionHidden(col);
+    }
+    inline int visualRow(int logicalRow) const {
+        return verticalHeader->visualIndex(logicalRow);
+    }
+    inline int visualColumn(int logicalCol) const {
+        return horizontalHeader->visualIndex(logicalCol);
+    }
+    inline int logicalRow(int visualRow) const {
+        return verticalHeader->logicalIndex(visualRow);
+    }
+    inline int logicalColumn(int visualCol) const {
+        return horizontalHeader->logicalIndex(visualCol);
+    }
+
+    int sectionSpanEndLogical(const QHeaderView *header, int logical, int span) const;
+    int sectionSpanSize(const QHeaderView *header, int logical, int span) const;
+    bool spanContainsSection(const QHeaderView *header, int logical, int spanLogical, int span) const;
+    void drawAndClipSpans(const QRegion &area, QPainter *painter,
+                          const QStyleOptionViewItemV4 &option, QBitArray *drawn,
+                          int firstVisualRow, int lastVisualRow, int firstVisualColumn, int lastVisualColumn);
+    void drawCell(QPainter *painter, const QStyleOptionViewItemV4 &option, const QModelIndex &index);
+
+    bool showGrid;
+    Qt::PenStyle gridStyle;
+    int rowSectionAnchor;
+    int columnSectionAnchor;
+    int columnResizeTimerID;
+    int rowResizeTimerID;
+    QList<int> columnsToUpdate;
+    QList<int> rowsToUpdate;
+    QHeaderView *horizontalHeader;
+    QHeaderView *verticalHeader;
+    QWidget *cornerWidget;
+    bool sortingEnabled;
+    bool geometryRecursionBlock;
+    QPoint visualCursor;  // (Row,column) cell coordinates to track through span navigation.
+
+    QSpanCollection spans;
+
+    void setSpan(int row, int column, int rowSpan, int columnSpan);
+    QSpanCollection::Span span(int row, int column) const;
+    inline int rowSpan(int row, int column) const {
+        return span(row, column).height();
+    }
+    inline int columnSpan(int row, int column) const {
+        return span(row, column).width();
+    }
+    inline bool hasSpans() const {
+        return !spans.spans.isEmpty();
+    }
+    inline int rowSpanHeight(int row, int span) const {
+        return sectionSpanSize(verticalHeader, row, span);
+    }
+    inline int columnSpanWidth(int column, int span) const {
+        return sectionSpanSize(horizontalHeader, column, span);
+    }
+    inline int rowSpanEndLogical(int row, int span) const {
+        return sectionSpanEndLogical(verticalHeader, row, span);
+    }
+    inline int columnSpanEndLogical(int column, int span) const {
+        return sectionSpanEndLogical(horizontalHeader, column, span);
+    }
+
+    inline bool isRowHidden(int row) const {
+        return verticalHeader->isSectionHidden(row);
+    }
+    inline bool isColumnHidden(int column) const {
+        return horizontalHeader->isSectionHidden(column);
+    }
+    inline bool isCellEnabled(int row, int column) const {
+        return isIndexEnabled(model->index(row, column, root));
+    }
+    inline bool isVisualRowHiddenOrDisabled(int row, int column) const {
+        int r = logicalRow(row);
+        int c = logicalColumn(column);
+        return isRowHidden(r) || !isCellEnabled(r, c);
+    }
+    inline bool isVisualColumnHiddenOrDisabled(int row, int column) const {
+        int r = logicalRow(row);
+        int c = logicalColumn(column);
+        return isColumnHidden(c) || !isCellEnabled(r, c);
+    }
+
+    QRect visualSpanRect(const QSpanCollection::Span &span) const;
+
+    void _q_selectRow(int row);
+    void _q_selectColumn(int column);
+
+    void selectRow(int row, bool anchor);
+    void selectColumn(int column, bool anchor);
+
+    void _q_updateSpanInsertedRows(const QModelIndex &parent, int start, int end);
+    void _q_updateSpanInsertedColumns(const QModelIndex &parent, int start, int end);
+    void _q_updateSpanRemovedRows(const QModelIndex &parent, int start, int end);
+    void _q_updateSpanRemovedColumns(const QModelIndex &parent, int start, int end);
+};
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_TABLEVIEW
+
+#endif // QTABLEVIEW_P_H