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// -*- c++ -*-
/* This file is part of the KDE project
Original TQTextCustomItem is
Copyright (C) 1999-2000 Trolltech AS. All rights reserved.
KoText modifications
Copyright (C) 2001-2005 David Faure <faure@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
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.
*/
// This file isn't standalone at this point; it's included by KoRichText.h
/**
* KoTextCustomItem is the base class for custom items (i.e. special chars)
* Custom items include:
* - variables ( KoVariable, kovariable.h )
* - in kword: inline images ( KWTextImage, kwtextimage.h ) (to be removed)
* - in kword: anchors, i.e. floating frames ( KWAnchor, kwanchor.h )
*/
class KOTEXT_EXPORT KoTextCustomItem
{
public:
KoTextCustomItem( KoTextDocument *p );
virtual ~KoTextCustomItem();
virtual void draw(TQPainter* p, int x, int y, int cx, int cy, int cw, int ch, const TQColorGroup& cg, bool selected ) /* = 0*/;
// Called after the item's paragraph has been formatted
virtual void finalize() {}
void move( int x, int y ) { xpos = x; ypos = y; }
int x() const { return xpos; }
int y() const { return ypos; }
// Called when the format of the character is being changed, see KoTextStringChar::setFormat
virtual void setFormat( KoTextFormat * ) { }
//virtual void setPainter( TQPainter*, bool adjust );
enum Placement { PlaceInline = 0, PlaceLeft, PlaceRight };
virtual Placement placement() const { return PlaceInline; }
bool placeInline() { return placement() == PlaceInline; }
virtual bool ownLine() const { return FALSE; }
// Called for "ownline" items
virtual void resize( int nwidth ) { width = nwidth; }
virtual void invalidate() {};
virtual bool isNested() const { return FALSE; }
virtual int minimumWidth() const { return 0; }
virtual int widthHint() const { return 0; }
virtual int ascent() const { return height; }
virtual TQString richText() const { return TQString(); }
int width;
int height;
TQRect geometry() const { return TQRect( xpos, ypos, width, height ); }
virtual bool enter( KoTextCursor *, KoTextDocument *&doc, KoTextParag *¶g, int &idx, int &ox, int &oy, bool atEnd = FALSE );
virtual bool enterAt( KoTextCursor *, KoTextDocument *&doc, KoTextParag *¶g, int &idx, int &ox, int &oy, const TQPoint & );
virtual bool next( KoTextCursor *, KoTextDocument *&doc, KoTextParag *¶g, int &idx, int &ox, int &oy );
virtual bool prev( KoTextCursor *, KoTextDocument *&doc, KoTextParag *¶g, int &idx, int &ox, int &oy );
virtual bool down( KoTextCursor *, KoTextDocument *&doc, KoTextParag *¶g, int &idx, int &ox, int &oy );
virtual bool up( KoTextCursor *, KoTextDocument *&doc, KoTextParag *¶g, int &idx, int &ox, int &oy );
void setParagraph( KoTextParag * p ) { parag = p; }
KoTextParag *paragraph() const { return parag; }
virtual void pageBreak( int /*y*/, KoTextFlow* /*flow*/ ) {}
KoTextDocument *parent;
/** The text document in which this customitem is */
KoTextDocument * textDocument() const { return parent; }
/** When the user deletes a custom item, it isn't destroyed but
* moved into the undo/redo history - setDeleted( true )
* and it can be then copied back from there into the real world - setDeleted( false ). */
virtual void setDeleted( bool b ) { m_deleted = b; }
bool isDeleted() const { return m_deleted; }
/** Called when the item is created or 'deleted' by the user
* Most custom items don't need to reimplement those, since
* the custom item is simply moved into the undo/redo history
* when deleting (or undoing a creation).
* It is not deleted and re-created later. */
virtual KCommand * createCommand() { return 0L; }
virtual KCommand * deleteCommand() { return 0L; }
/** Save to XML */
virtual void save( TQDomElement& formatElem ) = 0;
/** Save to Oasis XML */
virtual void saveOasis( KoXmlWriter& writer, KoSavingContext& context ) const = 0;
/** Return type of custom item. See DTD for VARIABLE.id docu. */
virtual int typeId() const = 0;
/** Reimplement this to calculate the item width
* It is important to start with "if ( m_deleted ) return;" */
virtual void resize() {}
/** Reimplemented by KoVariable to recalculate the value.
* It exists at the KoTextCustomItem level so that KoTextParag::setCustomItem
* can call it to set the initial value.
* This should call always resize(). */
virtual void recalc() { resize(); }
/** The index in paragraph(), where this anchor is
* Slightly slow (does a linear search in the paragraph) */
int index() const;
/** The formatting given to this 'special' character
* Slightly slow (does a linear search in the paragraph) */
KoTextFormat * format() const;
/**
* All coordinates are in pixels.
*/
virtual void drawCustomItem(TQPainter* p, int x, int y, int wpix, int hpix, int ascentpix, int cx, int cy, int cw, int ch, const TQColorGroup& cg, bool selected, int offset, bool drawingShadow) = 0;
protected:
bool m_deleted;
protected:
int xpos;
int ypos;
private:
KoTextParag *parag;
};
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