sd/source/ui/accessibility/AccessiblePageShape.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 <AccessiblePageShape.hxx>
  21 #include <svx/AccessibleShapeInfo.hxx>
  22 #include <svx/IAccessibleViewForwarder.hxx>
  23 #include <tools/diagnose_ex.h>
  24 #include <tools/gen.hxx>
  25 #include <sal/log.hxx>
  26
  27 #include <com/sun/star/beans/XPropertySet.hpp>
  28 #include <com/sun/star/drawing/XMasterPageTarget.hpp>
  29 #include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
  30
  31 using namespace ::com::sun::star;
  32 using namespace ::com::sun::star::uno;
  33 using namespace ::com::sun::star::accessibility;
  34 using ::com::sun::star::uno::Reference;
  35
  36 namespace accessibility {
  37
  38 //=====  internal  ============================================================
  39
  40 AccessiblePageShape::AccessiblePageShape (
  41     const uno::Reference<drawing::XDrawPage>& rxPage,
  42     const uno::Reference<XAccessible>& rxParent,
  43     const AccessibleShapeTreeInfo& rShapeTreeInfo)
  44     : AccessibleShape (AccessibleShapeInfo (nullptr, rxParent), rShapeTreeInfo),
  45       mxPage (rxPage)
  46 {
  47     // The main part of the initialization is done in the init method which
  48     // has to be called from this constructor's caller.
  49 }
  50
  51 AccessiblePageShape::~AccessiblePageShape()
  52 {
  53 }
  54
  55 //=====  XAccessibleContext  ==================================================
  56
  57 sal_Int32 SAL_CALL
  58        AccessiblePageShape::getAccessibleChildCount()
  59 {
  60     return 0;
  61 }
  62
  63 /** Forward the request to the shape.  Return the requested shape or throw
  64     an exception for a wrong index.
  65 */
  66 uno::Reference<XAccessible> SAL_CALL
  67     AccessiblePageShape::getAccessibleChild( sal_Int32 )
  68 {
  69     throw lang::IndexOutOfBoundsException ("page shape has no children",
  70         static_cast<uno::XWeak*>(this));
  71 }
  72
  73 //=====  XAccessibleComponent  ================================================
  74
  75 awt::Rectangle SAL_CALL AccessiblePageShape::getBounds()
  76 {
  77     ThrowIfDisposed ();
  78
  79     awt::Rectangle aBoundingBox;
  80
  81     if (maShapeTreeInfo.GetViewForwarder() != nullptr)
  82     {
  83         uno::Reference<beans::XPropertySet> xSet (mxPage, uno::UNO_QUERY);
  84         if (xSet.is())
  85         {
  86             uno::Any aValue;
  87
  88             aValue = xSet->getPropertyValue ("BorderLeft");
  89             aValue >>= aBoundingBox.X;
  90             aValue = xSet->getPropertyValue ("BorderTop");
  91             aValue >>= aBoundingBox.Y;
  92
  93             aValue = xSet->getPropertyValue ("Width");
  94             aValue >>= aBoundingBox.Width;
  95             aValue = xSet->getPropertyValue ("Height");
  96             aValue >>= aBoundingBox.Height;
  97         }
  98
  99         // Transform coordinates from internal to pixel.
 100         ::Size aPixelSize = maShapeTreeInfo.GetViewForwarder()->LogicToPixel (
 101             ::Size (aBoundingBox.Width, aBoundingBox.Height));
 102         ::Point aPixelPosition = maShapeTreeInfo.GetViewForwarder()->LogicToPixel (
 103             ::Point (aBoundingBox.X, aBoundingBox.Y));
 104
 105         // Clip the shape's bounding box with the bounding box of its parent.
 106         Reference<XAccessibleComponent> xParentComponent (
 107             getAccessibleParent(), uno::UNO_QUERY);
 108         if (xParentComponent.is())
 109         {
 110             // Make the coordinates relative to the parent.
 111             awt::Point aParentLocation (xParentComponent->getLocationOnScreen());
 112             int x = aPixelPosition.getX() - aParentLocation.X;
 113             int y = aPixelPosition.getY() - aParentLocation.Y;
 114
 115             // Clip with parent (with coordinates relative to itself).
 116             ::tools::Rectangle aBBox (
 117                 x, y, x + aPixelSize.getWidth(), y + aPixelSize.getHeight());
 118             awt::Size aParentSize (xParentComponent->getSize());
 119             ::tools::Rectangle aParentBBox (0,0, aParentSize.Width, aParentSize.Height);
 120             aBBox = aBBox.GetIntersection (aParentBBox);
 121             aBoundingBox = awt::Rectangle (
 122                 aBBox.getX(),
 123                 aBBox.getY(),
 124                 aBBox.getWidth(),
 125                 aBBox.getHeight());
 126         }
 127         else
 128             aBoundingBox = awt::Rectangle (
 129                 aPixelPosition.getX(), aPixelPosition.getY(),
 130                 aPixelSize.getWidth(), aPixelSize.getHeight());
 131     }
 132
 133     return aBoundingBox;
 134 }
 135
 136 sal_Int32 SAL_CALL AccessiblePageShape::getForeground()
 137 {
 138     ThrowIfDisposed ();
 139     sal_Int32 nColor (0x0ffffffL);
 140
 141     try
 142     {
 143         uno::Reference<beans::XPropertySet> aSet (mxPage, uno::UNO_QUERY);
 144         if (aSet.is())
 145         {
 146             uno::Any aColor = aSet->getPropertyValue ("LineColor");
 147             aColor >>= nColor;
 148         }
 149     }
 150     catch (const css::beans::UnknownPropertyException&)
 151     {
 152         // Ignore exception and return default color.
 153     }
 154     return nColor;
 155 }
 156
 157 /** Extract the background color from the Background property of the
 158     draw page or its master page.
 159 */
 160 sal_Int32 SAL_CALL AccessiblePageShape::getBackground()
 161 {
 162     ThrowIfDisposed ();
 163     sal_Int32 nColor (0x01020ffL);
 164
 165     try
 166     {
 167         uno::Reference<beans::XPropertySet> xSet (mxPage, uno::UNO_QUERY);
 168         if (xSet.is())
 169         {
 170             uno::Any aBGSet = xSet->getPropertyValue ("Background");
 171             Reference<beans::XPropertySet> xBGSet (aBGSet, uno::UNO_QUERY);
 172             if ( ! xBGSet.is())
 173             {
 174                 // Draw page has no Background property.  Try the master
 175                 // page instead.
 176                 Reference<drawing::XMasterPageTarget> xTarget (mxPage, uno::UNO_QUERY);
 177                 if (xTarget.is())
 178                 {
 179                     xSet.set(xTarget->getMasterPage(), uno::UNO_QUERY);
 180                     aBGSet = xSet->getPropertyValue ("Background");
 181                     xBGSet.set(aBGSet, uno::UNO_QUERY);
 182                 }
 183             }
 184             // Fetch the fill color.  Has to be extended to cope with
 185             // gradients, hashes, and bitmaps.
 186             if (xBGSet.is())
 187             {
 188                 uno::Any aColor = xBGSet->getPropertyValue ("FillColor");
 189                 aColor >>= nColor;
 190             }
 191             else
 192                 SAL_WARN("sd", "no Background property in page");
 193         }
 194     }
 195     catch (const css::beans::UnknownPropertyException&)
 196     {
 197         TOOLS_WARN_EXCEPTION("sd", "caught exception due to unknown property");
 198         // Ignore exception and return default color.
 199     }
 200     return nColor;
 201 }
 202
 203 // XServiceInfo
 204
 205 OUString SAL_CALL
 206     AccessiblePageShape::getImplementationName()
 207 {
 208     ThrowIfDisposed ();
 209     return "AccessiblePageShape";
 210 }
 211
 212 css::uno::Sequence< OUString> SAL_CALL
 213     AccessiblePageShape::getSupportedServiceNames()
 214 {
 215     ThrowIfDisposed ();
 216     return AccessibleShape::getSupportedServiceNames();
 217 }
 218
 219 //=====  XComponent  ==========================================================
 220
 221 void AccessiblePageShape::dispose()
 222 {
 223     // Cleanup.
 224     mxShape = nullptr;
 225
 226     // Call base classes.
 227     AccessibleContextBase::dispose ();
 228 }
 229
 230 //=====  protected internal  ==================================================
 231
 232 OUString
 233     AccessiblePageShape::CreateAccessibleBaseName()
 234 {
 235     return "PageShape";
 236 }
 237
 238 OUString
 239     AccessiblePageShape::CreateAccessibleName()
 240 {
 241     Reference<beans::XPropertySet> xPageProperties (mxPage, UNO_QUERY);
 242
 243     // Get name of the current slide.
 244     OUString sCurrentSlideName;
 245     try
 246     {
 247         if (xPageProperties.is())
 248         {
 249             xPageProperties->getPropertyValue( "LinkDisplayName" ) >>= sCurrentSlideName;
 250         }
 251     }
 252     catch (const beans::UnknownPropertyException&)
 253     {
 254     }
 255
 256     return CreateAccessibleBaseName()+": "+sCurrentSlideName;
 257 }
 258
 259 } // end of namespace accessibility
 260
 261 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */