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93 lines
3.9 KiB
C++
93 lines
3.9 KiB
C++
/* This file is part of the KDE libraries and the Kate part.
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*
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* Copyright (C) 2006 Hamish Rodda <rodda@kde.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef EXPANDINGDELEGATE_H
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#define EXPANDINGDELEGATE_H
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#include <QtGui/QItemDelegate>
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#include <QItemDelegate>
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#include <QtGui/qtextlayout.h>
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#include <QtCore/qabstractitemmodel.h>
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#include <QPoint>
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class KateRenderer;
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class KateCompletionWidget;
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class KateDocument;
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class KateTextLine;
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class ExpandingWidgetModel;
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#include <QVariant>
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#include <QStyleOptionViewItem>
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/**
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* This is a delegate that cares, together with ExpandingWidgetModel, about embedded widgets in tree-view.
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* */
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class ExpandingDelegate : public QItemDelegate
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{
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Q_OBJECT
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public:
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explicit ExpandingDelegate(ExpandingWidgetModel* model, QObject* parent = 0L);
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// Overridden to create highlighting for current index
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virtual void paint ( QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index ) const;
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// Returns the basic size-hint as reported by QItemDelegate
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QSize basicSizeHint( const QModelIndex& index ) const;
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ExpandingWidgetModel* model() const;
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protected:
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//Called right before paint to allow last-minute changes to the style
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virtual void adjustStyle( const QModelIndex& index, QStyleOptionViewItem & option ) const;
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virtual void drawDisplay ( QPainter * painter, const QStyleOptionViewItem & option, const QRect & rect, const QString & text ) const;
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virtual QSize sizeHint ( const QStyleOptionViewItem & option, const QModelIndex & index ) const;
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virtual bool editorEvent ( QEvent * event, QAbstractItemModel * model, const QStyleOptionViewItem & option, const QModelIndex & index );
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virtual void drawBackground ( QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index ) const;
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virtual void drawDecoration(QPainter* painter, const QStyleOptionViewItem& option, const QRect& rect, const QPixmap& pixmap) const;
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//option can be changed
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virtual QList<QTextLayout::FormatRange> createHighlighting(const QModelIndex& index, QStyleOptionViewItem& option) const;
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void adjustRect(QRect& rect) const;
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/**
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* Creates a list of FormatRanges as should be returned by createHighlighting from a list of QVariants as described in the kde header ktexteditor/codecompletionmodel.h
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* */
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QList<QTextLayout::FormatRange> highlightingFromVariantList(const QList<QVariant>& customHighlights) const;
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//Called when an item was expanded/unexpanded and the height changed
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virtual void heightChanged() const;
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//Initializes the style options from the index
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void initStyleOption(QStyleOptionViewItem *option, const QModelIndex &index) const;
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mutable int m_currentColumnStart; //Text-offset for custom highlighting, will be applied to m_cachedHighlights(Only highlights starting after this will be used). Shoult be zero of the highlighting is not taken from kate.
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mutable QList<int> m_currentColumnStarts;
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mutable QList<QTextLayout::FormatRange> m_cachedHighlights;
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mutable Qt::Alignment m_cachedAlignment;
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mutable QColor m_backgroundColor;
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mutable QModelIndex m_currentIndex;
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private:
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ExpandingWidgetModel* m_model;
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};
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#endif
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