149 lines
4.7 KiB
C++
149 lines
4.7 KiB
C++
/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: AccessibleViewForwarder.hxx,v $
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*
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* $Revision: 1.5 $
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*
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* last change: $Author: rt $ $Date: 2005-09-09 05:01:30 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2005 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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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 Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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************************************************************************/
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#ifndef _SD_ACCESSIBILITY_ACCESSIBLE_VIEW_FORWARDER_HXX
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#define _SD_ACCESSIBILITY_ACCESSIBLE_VIEW_FORWARDER_HXX
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#ifndef _SVX_ACCESSIBILITY_ACCESSIBLE_IVIEW_FORWARDER_HXX
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#include <svx/IAccessibleViewForwarder.hxx>
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#endif
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class SdrPaintView;
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class OutputDevice;
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namespace accessibility {
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/** <p>This class provides the means to transform between internal coordinates
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and screen coordinates without giving direct access to the underlying
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view. It represents a certain window. A call to
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<method>GetVisArea</method> returns the corresponding visible
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rectangle.</p>
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@attention
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Note, that modifications of the underlying view that lead to
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different transformations between internal and screen coordinates or
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change the validity of the forwarder have to be signaled seperately.
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*/
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class AccessibleViewForwarder
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: public IAccessibleViewForwarder
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{
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public:
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//===== internal ========================================================
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AccessibleViewForwarder (SdrPaintView* pView, USHORT nWindowId);
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AccessibleViewForwarder (SdrPaintView* pView, OutputDevice& rDevice);
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virtual ~AccessibleViewForwarder (void);
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void SetView (SdrPaintView* pView);
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//===== IAccessibleViewforwarder ========================================
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/** This method informs you about the state of the forwarder. Do not
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use it when the returned value is <false/>.
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@return
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Return <true/> if the view forwarder is valid and <false/> else.
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*/
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virtual BOOL IsValid (void) const;
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/** Returns the area of the underlying document that is visible in the
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* corresponding window.
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@return
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The rectangle of the visible part of the document.
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*/
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virtual Rectangle GetVisibleArea() const;
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/** Transform the specified point from internal coordinates to an
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absolute screen position.
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@param rPoint
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Point in internal coordinates.
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@return
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The same point but in screen coordinates relative to the upper
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left corner of the (current) screen.
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*/
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virtual Point LogicToPixel (const Point& rPoint) const;
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/** Transform the specified size from internal coordinates to a screen
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* position.
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@param rSize
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Size in internal coordinates.
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@return
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The same size but in screen coordinates.
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*/
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virtual Size LogicToPixel (const Size& rSize) const;
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/** Transform the specified point from absolute screen coordinates to
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internal coordinates.
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@param rPoint
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Point in screen coordinates relative to the upper left corner of
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the (current) screen.
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@return
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The same point but in internal coordinates.
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*/
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virtual Point PixelToLogic (const Point& rPoint) const;
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/** Transform the specified Size from screen coordinates to internal
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coordinates.
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@param rSize
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Size in screen coordinates.
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@return
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The same size but in internal coordinates.
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*/
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virtual Size PixelToLogic (const Size& rSize) const;
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protected:
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SdrPaintView* mpView;
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USHORT mnWindowId;
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OutputDevice& mrDevice;
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private:
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AccessibleViewForwarder (AccessibleViewForwarder&);
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AccessibleViewForwarder& operator= (AccessibleViewForwarder&);
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};
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} // end of namespace accessibility
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#endif
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