sd/source/ui/view/drviewsh.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 <DrawViewShell.hxx>
  21
  22 #include <sal/log.hxx>
  23 #include <rtl/math.hxx>
  24 #include <comphelper/lok.hxx>
  25
  26 #include <DrawDocShell.hxx>
  27
  28 #include <slideshow.hxx>
  29
  30 namespace sd {
  31
  32 void DrawViewShell::GotoBookmark(std::u16string_view rBookmark)
  33 {
  34     ::sd::DrawDocShell* pDocSh = GetDocSh();
  35     if( pDocSh )
  36     {
  37         if( !pDocSh->GetViewShell() ) //#i26016# this case occurs if the jump-target-document was opened already with file open dialog before triggering the jump via hyperlink
  38             pDocSh->Connect(this);
  39         pDocSh->GotoBookmark(rBookmark);
  40     }
  41 }
  42
  43 /**
  44  * Make area visible (scroll part of picture)
  45 |*
  46 \************************************************************************/
  47
  48 void DrawViewShell::MakeVisible(const ::tools::Rectangle& rRect, vcl::Window& rWin)
  49 {
  50     if ( (IsMouseButtonDown() && !IsMouseSelecting()) || SlideShow::IsRunning( GetViewShellBase() ) )
  51         return;
  52
  53     // tdf#98646 check if Rectangle which contains the bounds of the region to
  54     // be shown eventually contains values that cause overflows when processing
  55     // e.g. when calling GetWidth()
  56     const bool bOverflowInX(!rtl::math::approxEqual(static_cast<double>(rRect.getOpenWidth()), static_cast<double>(rRect.Right()) - static_cast<double>(rRect.Left())));
  57     const bool bOverflowInY(!rtl::math::approxEqual(static_cast<double>(rRect.getOpenHeight()), static_cast<double>(rRect.Bottom()) - static_cast<double>(rRect.Top())));
  58
  59     if(bOverflowInX || bOverflowInY)
  60     {
  61         SAL_WARN("sd", "The given Rectangle contains values that lead to numerical overflows (!)");
  62         return;
  63     }
  64
  65     // In older versions, if in X or Y the size of the object was
  66     // smaller than the visible area, the user-defined zoom was
  67     // changed. This was decided to be a bug for
  68     // StarOffice 6.x (Apr 2002), thus I developed a
  69     // version which instead handles X/Y bigger/smaller and visibility
  70     // questions separately
  71     const Size aLogicSize(rRect.GetSize());
  72
  73     // visible area
  74     Size aVisSizePixel(rWin.GetOutputSizePixel());
  75     bool bTiledRendering = comphelper::LibreOfficeKit::isActive() && !rWin.IsMapModeEnabled();
  76     if (bTiledRendering)
  77     {
  78         rWin.GetOutDev()->Push(vcl::PushFlags::MAPMODE);
  79         rWin.EnableMapMode();
  80     }
  81     ::tools::Rectangle aVisArea(rWin.PixelToLogic(::tools::Rectangle(Point(0,0), aVisSizePixel)));
  82     if (bTiledRendering)
  83         rWin.GetOutDev()->Pop();
  84     Size aVisAreaSize(aVisArea.GetSize());
  85
  86     if ( aVisArea.Contains(rRect) )
  87         return;
  88
  89     // object is not entirely in visible area
  90     sal_Int32 nFreeSpaceX(aVisAreaSize.Width() - aLogicSize.Width());
  91     sal_Int32 nFreeSpaceY(aVisAreaSize.Height() - aLogicSize.Height());
  92
  93     // allow a mode for move-only visibility without zooming.
  94     const sal_Int32 nPercentBorder(30);
  95     const ::tools::Rectangle aInnerRectangle(
  96         aVisArea.Left() + ((aVisAreaSize.Width() * nPercentBorder) / 200),
  97         aVisArea.Top() + ((aVisAreaSize.Height() * nPercentBorder) / 200),
  98         aVisArea.Right() - ((aVisAreaSize.Width() * nPercentBorder) / 200),
  99         aVisArea.Bottom() - ((aVisAreaSize.Height() * nPercentBorder) / 200)
 100         );
 101     Point aNewPos(aVisArea.TopLeft());
 102
 103     if(nFreeSpaceX < 0)
 104     {
 105         if(aInnerRectangle.Left() > rRect.Right())
 106         {
 107             // object moves out to the left
 108             aNewPos.AdjustX( -(aVisAreaSize.Width() / 2) );
 109         }
 110
 111         if(aInnerRectangle.Right() < rRect.Left())
 112         {
 113             // object moves out to the right
 114             aNewPos.AdjustX(aVisAreaSize.Width() / 2 );
 115         }
 116     }
 117     else
 118     {
 119         if(nFreeSpaceX > rRect.GetWidth())
 120         {
 121             nFreeSpaceX = rRect.GetWidth();
 122         }
 123
 124         if(nFreeSpaceX <= 0)
 125         {
 126             SAL_WARN("sd", "The given Rectangle contains values that lead to numerical overflows (!)");
 127         }
 128         else
 129         {
 130             const ::tools::Long distRight(rRect.Right() - aNewPos.X() - aVisAreaSize.Width());
 131
 132             if(distRight > 0)
 133             {
 134                 ::tools::Long mult = (distRight / nFreeSpaceX) + 1;
 135                 aNewPos.AdjustX(mult * nFreeSpaceX );
 136             }
 137
 138             const ::tools::Long distLeft(aNewPos.X() - rRect.Left());
 139
 140             if(distLeft > 0)
 141             {
 142                 ::tools::Long mult = (distLeft / nFreeSpaceX) + 1;
 143                 aNewPos.AdjustX( -(mult * nFreeSpaceX) );
 144             }
 145         }
 146     }
 147
 148     if(nFreeSpaceY < 0)
 149     {
 150         if(aInnerRectangle.Top() > rRect.Bottom())
 151         {
 152             // object moves out to the top
 153             aNewPos.AdjustY( -(aVisAreaSize.Height() / 2) );
 154         }
 155
 156         if(aInnerRectangle.Bottom() < rRect.Top())
 157         {
 158             // object moves out to the right
 159             aNewPos.AdjustY(aVisAreaSize.Height() / 2 );
 160         }
 161     }
 162     else
 163     {
 164         if(nFreeSpaceY > rRect.GetHeight())
 165         {
 166             nFreeSpaceY = rRect.GetHeight();
 167         }
 168
 169         if(nFreeSpaceY <= 0)
 170         {
 171             SAL_WARN("sd", "The given Rectangle contains values that lead to numerical overflows (!)");
 172         }
 173         else
 174         {
 175             const ::tools::Long distBottom(rRect.Bottom() - aNewPos.Y() - aVisAreaSize.Height());
 176
 177             if(distBottom > 0)
 178             {
 179                 ::tools::Long mult = (distBottom / nFreeSpaceY) + 1;
 180                 aNewPos.AdjustY(mult * nFreeSpaceY );
 181             }
 182
 183             const ::tools::Long distTop(aNewPos.Y() - rRect.Top());
 184
 185             if(distTop > 0)
 186             {
 187                 ::tools::Long mult = (distTop / nFreeSpaceY) + 1;
 188                 aNewPos.AdjustY( -(mult * nFreeSpaceY) );
 189             }
 190         }
 191     }
 192
 193     // did position change? Does it need to be set?
 194     if(aNewPos != aVisArea.TopLeft())
 195     {
 196         aVisArea.SetPos(aNewPos);
 197         SetZoomRect(aVisArea);
 198     }
 199 }
 200
 201 }
 202
 203 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */