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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * Copyright 2008 by Sun Microsystems, Inc.
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 * OpenOffice.org - a multi-platform office productivity suite
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 * $RCSfile: overlaybitmap.cxx,v $
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svx.hxx"
#include <svx/sdr/overlay/overlaybitmap.hxx>
#include <vcl/salbtype.hxx>
#include <vcl/outdev.hxx>
#include <vcl/bitmapex.hxx>

// #i77674#
#include <basegfx/matrix/b2dhommatrix.hxx>

//////////////////////////////////////////////////////////////////////////////

namespace sdr
{
    namespace overlay
    {
        void OverlayBitmap::drawGeometry(OutputDevice& rOutputDevice)
        {
            // #i77674# calculate discrete top-left
            basegfx::B2DPoint aDiscreteTopLeft(rOutputDevice.GetViewTransformation() * getBasePosition());
            aDiscreteTopLeft -= basegfx::B2DPoint((double)mnCenterX, (double)mnCenterY);

            // remember MapMode and switch to pixels
            const bool bMapModeWasEnabled(rOutputDevice.IsMapModeEnabled());
            rOutputDevice.EnableMapMode(false);

            // draw the bitmap
            const Point aPixelTopLeft((sal_Int32)floor(aDiscreteTopLeft.getX()), (sal_Int32)floor(aDiscreteTopLeft.getY()));

            if(mbUseTransparenceColor)
            {
                BitmapEx aBitmapEx(maBitmap, getBaseColor());
                rOutputDevice.DrawBitmapEx(aPixelTopLeft, aBitmapEx);
            }
            else
            {
                rOutputDevice.DrawBitmap(aPixelTopLeft, maBitmap);
            }

            // restore MapMode
            rOutputDevice.EnableMapMode(bMapModeWasEnabled);
        }

        void OverlayBitmap::createBaseRange(OutputDevice& rOutputDevice)
        {
            // #i77674# calculate discrete top-left
            basegfx::B2DPoint aDiscreteTopLeft(rOutputDevice.GetViewTransformation() * getBasePosition());
            aDiscreteTopLeft -= basegfx::B2DPoint((double)mnCenterX, (double)mnCenterY);

            // calculate discrete range
            const Size aBitmapPixelSize(maBitmap.GetSizePixel());
            const basegfx::B2DRange aDiscreteRange(
                aDiscreteTopLeft.getX(), aDiscreteTopLeft.getY(),
                aDiscreteTopLeft.getX() + (double)aBitmapPixelSize.getWidth(), aDiscreteTopLeft.getY() + (double)aBitmapPixelSize.getHeight());

            // set and go back to logic range
            maBaseRange = aDiscreteRange;
            maBaseRange.transform(rOutputDevice.GetInverseViewTransformation());
        }

        OverlayBitmap::OverlayBitmap(
            const basegfx::B2DPoint& rBasePos,
            const Bitmap& rBitmap,
            sal_uInt16 nCenX, sal_uInt16 nCenY,
            sal_Bool bUseTransCol,
            Color aTransColor)
        :   OverlayObjectWithBasePosition(rBasePos, aTransColor),
            maBitmap(rBitmap),
            mnCenterX(nCenX),
            mnCenterY(nCenY),
            mbUseTransparenceColor(bUseTransCol)
        {
        }

        OverlayBitmap::~OverlayBitmap()
        {
        }

        void OverlayBitmap::setBitmap(const Bitmap& rNew)
        {
            if(rNew != maBitmap)
            {
                // remember new Bitmap
                maBitmap = rNew;

                // register change (after change)
                objectChange();
            }
        }

        void OverlayBitmap::setTransparenceUsed(sal_Bool bNew)
        {
            if(bNew != mbUseTransparenceColor)
            {
                // remember new value
                mbUseTransparenceColor = bNew;

                // register change (after change)
                objectChange();
            }
        }

        void OverlayBitmap::setCenterXY(sal_uInt16 nNewX, sal_uInt16 nNewY)
        {
            if(nNewX != mnCenterX || nNewY != mnCenterY)
            {
                // remember new values
                if(nNewX != mnCenterX)
                {
                    mnCenterX = nNewX;
                }

                if(nNewY != mnCenterY)
                {
                    mnCenterY = nNewY;
                }

                // register change (after change)
                objectChange();
            }
        }

        void OverlayBitmap::zoomHasChanged()
        {
            // reset validity of range in logical coor to force recalculation
            mbIsChanged = sal_True;
        }
    } // end of namespace overlay
} // end of namespace sdr

//////////////////////////////////////////////////////////////////////////////
// eof