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/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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2010-02-12 08:01:35 -06:00
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org 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
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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2002-04-11 11:03:58 -05:00
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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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#include <svx/IAccessibleViewForwarder.hxx>
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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, OutputDevice& rDevice);
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virtual ~AccessibleViewForwarder (void);
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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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