office-gobmx/sd/source/ui/accessibility/AccessibleViewForwarder.cxx
2010-06-14 18:49:32 +02:00

172 lines
4.9 KiB
C++
Executable file

/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* Copyright 2000, 2010 Oracle and/or its affiliates.
*
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_sd.hxx"
#ifndef _SVX_ACCESSIBILITY_ACCESSIBLE_VIEW_FORWARDER_HXX
#include "AccessibleViewForwarder.hxx"
#endif
#include <svx/svdpntv.hxx>
#include <vcl/outdev.hxx>
#include <svx/sdrpaintwindow.hxx>
namespace accessibility {
/** For the time beeing, the implementation of this class will not use the
member mrDevice. Instead the device is retrieved from the view
everytime it is used. This is necessary because the device has to stay
up-to-date with the current view and the class has to stay compatible.
May change in the future.
*/
AccessibleViewForwarder::AccessibleViewForwarder (SdrPaintView* pView, OutputDevice& rDevice)
: mpView (pView),
mnWindowId (0),
mrDevice (rDevice)
{
// Search the output device to determine its id.
for(sal_uInt32 a(0L); a < mpView->PaintWindowCount(); a++)
{
SdrPaintWindow* pPaintWindow = mpView->GetPaintWindow(a);
OutputDevice& rOutDev = pPaintWindow->GetOutputDevice();
if(&rOutDev == &rDevice)
{
mnWindowId = (sal_uInt16)a;
break;
}
}
}
AccessibleViewForwarder::~AccessibleViewForwarder (void)
{
// empty
}
sal_Bool AccessibleViewForwarder::IsValid (void) const
{
return sal_True;
}
Rectangle AccessibleViewForwarder::GetVisibleArea (void) const
{
Rectangle aVisibleArea;
if((sal_uInt32)mnWindowId < mpView->PaintWindowCount())
{
SdrPaintWindow* pPaintWindow = mpView->GetPaintWindow((sal_uInt32)mnWindowId);
aVisibleArea = pPaintWindow->GetVisibleArea();
}
return aVisibleArea;
}
/** Tansform the given point into pixel coordiantes. After the the pixel
coordiantes of the window origin are added to make the point coordinates
absolute.
*/
Point AccessibleViewForwarder::LogicToPixel (const Point& rPoint) const
{
OSL_ASSERT (mpView != NULL);
if((sal_uInt32)mnWindowId < mpView->PaintWindowCount())
{
SdrPaintWindow* pPaintWindow = mpView->GetPaintWindow((sal_uInt32)mnWindowId);
OutputDevice& rOutDev = pPaintWindow->GetOutputDevice();
Rectangle aBBox(static_cast<Window&>(rOutDev).GetWindowExtentsRelative(0L));
return rOutDev.LogicToPixel (rPoint) + aBBox.TopLeft();
}
else
return Point();
}
Size AccessibleViewForwarder::LogicToPixel (const Size& rSize) const
{
OSL_ASSERT (mpView != NULL);
if((sal_uInt32)mnWindowId < mpView->PaintWindowCount())
{
SdrPaintWindow* pPaintWindow = mpView->GetPaintWindow((sal_uInt32)mnWindowId);
OutputDevice& rOutDev = pPaintWindow->GetOutputDevice();
return rOutDev.LogicToPixel (rSize);
}
else
return Size();
}
/** First subtract the window origin to make the point coordinates relative
to the window and then transform them into internal coordinates.
*/
Point AccessibleViewForwarder::PixelToLogic (const Point& rPoint) const
{
OSL_ASSERT (mpView != NULL);
if((sal_uInt32)mnWindowId < mpView->PaintWindowCount())
{
SdrPaintWindow* pPaintWindow = mpView->GetPaintWindow((sal_uInt32)mnWindowId);
OutputDevice& rOutDev = pPaintWindow->GetOutputDevice();
Rectangle aBBox (static_cast<Window&>(rOutDev).GetWindowExtentsRelative(0L));
return rOutDev.PixelToLogic (rPoint - aBBox.TopLeft());
}
else
return Point();
}
Size AccessibleViewForwarder::PixelToLogic (const Size& rSize) const
{
OSL_ASSERT (mpView != NULL);
if((sal_uInt32)mnWindowId < mpView->PaintWindowCount())
{
SdrPaintWindow* pPaintWindow = mpView->GetPaintWindow((sal_uInt32)mnWindowId);
OutputDevice& rOutDev = pPaintWindow->GetOutputDevice();
return rOutDev.PixelToLogic (rSize);
}
else
return Size();
}
} // end of namespace accessibility