sd/source/ui/inc/AccessibleViewForwarder.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #include <svx/IAccessibleViewForwarder.hxx>
  23
  24 class SdrPaintView;
  25 class OutputDevice;
  26
  27 namespace accessibility
  28 {
  29 /** <p>This class provides the means to transform between internal coordinates
  30     and screen coordinates without giving direct access to the underlying
  31     view.  It represents a certain window.  A call to
  32     <method>GetVisArea</method> returns the corresponding visible
  33     rectangle.</p>
  34
  35     @attention
  36         Note, that modifications of the underlying view that lead to
  37         different transformations between internal and screen coordinates or
  38         change the validity of the forwarder have to be signaled separately.
  39 */
  40 class AccessibleViewForwarder final : public IAccessibleViewForwarder
  41 {
  42 public:
  43     //=====  internal  ========================================================
  44
  45     AccessibleViewForwarder(SdrPaintView* pView, const OutputDevice& rDevice);
  46
  47     virtual ~AccessibleViewForwarder() override;
  48
  49     //=====  IAccessibleViewforwarder  ========================================
  50
  51     /** Returns the area of the underlying document that is visible in the
  52     * corresponding window.
  53
  54         @return
  55             The rectangle of the visible part of the document.
  56      */
  57     virtual ::tools::Rectangle GetVisibleArea() const override;
  58
  59     /** Transform the specified point from internal coordinates to an
  60         absolute screen position.
  61
  62         @param rPoint
  63             Point in internal coordinates.
  64
  65         @return
  66             The same point but in screen coordinates relative to the upper
  67             left corner of the (current) screen.
  68      */
  69     virtual Point LogicToPixel(const Point& rPoint) const override;
  70
  71     /** Transform the specified size from internal coordinates to a screen
  72     * position.
  73
  74         @param rSize
  75             Size in internal coordinates.
  76
  77         @return
  78             The same size but in screen coordinates.
  79      */
  80     virtual Size LogicToPixel(const Size& rSize) const override;
  81
  82 private:
  83     SdrPaintView* mpView;
  84     sal_uInt16 mnWindowId;
  85
  86     AccessibleViewForwarder(AccessibleViewForwarder const&) = delete;
  87     AccessibleViewForwarder& operator=(AccessibleViewForwarder const&) = delete;
  88 };
  89
  90 } // end of namespace accessibility
  91
  92 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */