sd/source/ui/accessibility/AccessibleViewForwarder.cxx

   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 #include <AccessibleViewForwarder.hxx>
  21 #include <svx/svdpntv.hxx>
  22 #include <vcl/window.hxx>
  23 #include <svx/sdrpaintwindow.hxx>
  24 #include <osl/diagnose.h>
  25
  26 namespace accessibility
  27 {
  28 /** For the time being, the implementation of this class will not use the
  29     member mrDevice.  Instead the device is retrieved from the view
  30     every time it is used.  This is necessary because the device has to stay
  31     up-to-date with the current view and the class has to stay compatible.
  32     May change in the future.
  33 */
  34
  35 AccessibleViewForwarder::AccessibleViewForwarder(SdrPaintView* pView, const OutputDevice& rDevice)
  36     : mpView(pView)
  37     , mnWindowId(0)
  38 {
  39     // Search the output device to determine its id.
  40     for (sal_uInt32 a(0); a < mpView->PaintWindowCount(); a++)
  41     {
  42         SdrPaintWindow* pPaintWindow = mpView->GetPaintWindow(a);
  43         OutputDevice& rOutDev = pPaintWindow->GetOutputDevice();
  44
  45         if (&rOutDev == &rDevice)
  46         {
  47             mnWindowId = static_cast<sal_uInt16>(a);
  48             break;
  49         }
  50     }
  51 }
  52
  53 AccessibleViewForwarder::~AccessibleViewForwarder()
  54 {
  55     // empty
  56 }
  57
  58 ::tools::Rectangle AccessibleViewForwarder::GetVisibleArea() const
  59 {
  60     ::tools::Rectangle aVisibleArea;
  61
  62     if (static_cast<sal_uInt32>(mnWindowId) < mpView->PaintWindowCount())
  63     {
  64         SdrPaintWindow* pPaintWindow = mpView->GetPaintWindow(static_cast<sal_uInt32>(mnWindowId));
  65         aVisibleArea = pPaintWindow->GetVisibleArea();
  66     }
  67
  68     return aVisibleArea;
  69 }
  70
  71 /** Transform the given point into pixel coordinates.  After the pixel
  72     coordinates of the window origin are added to make the point coordinates
  73     absolute.
  74 */
  75 Point AccessibleViewForwarder::LogicToPixel(const Point& rPoint) const
  76 {
  77     assert(mpView != nullptr);
  78     if (static_cast<sal_uInt32>(mnWindowId) < mpView->PaintWindowCount())
  79     {
  80         SdrPaintWindow* pPaintWindow = mpView->GetPaintWindow(static_cast<sal_uInt32>(mnWindowId));
  81         OutputDevice& rOutDev = pPaintWindow->GetOutputDevice();
  82         ::tools::Rectangle aBBox(rOutDev.GetOwnerWindow()->GetWindowExtentsAbsolute());
  83         return rOutDev.LogicToPixel(rPoint) + aBBox.TopLeft();
  84     }
  85     else
  86         return Point();
  87 }
  88
  89 Size AccessibleViewForwarder::LogicToPixel(const Size& rSize) const
  90 {
  91     assert(mpView != nullptr);
  92     if (static_cast<sal_uInt32>(mnWindowId) < mpView->PaintWindowCount())
  93     {
  94         SdrPaintWindow* pPaintWindow = mpView->GetPaintWindow(static_cast<sal_uInt32>(mnWindowId));
  95         OutputDevice& rOutDev = pPaintWindow->GetOutputDevice();
  96         return rOutDev.LogicToPixel(rSize);
  97     }
  98     else
  99         return Size();
 100 }
 101
 102 } // end of namespace accessibility
 103
 104 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */