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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: vclhelperbitmaprender.cxx,v $
*
* $Revision: 1.3 $
*
* last change: $Author: aw $ $Date: 2008-05-27 14:11:21 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_drawinglayer.hxx"
#include <vclhelperbitmaprender.hxx>
#include <goodies/grfmgr.hxx>
#include <basegfx/vector/b2dvector.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/range/b2drange.hxx>
#include <vcl/outdev.hxx>
#include <vclhelperbitmaptransform.hxx>
//////////////////////////////////////////////////////////////////////////////
// support for different kinds of bitmap rendering using vcl
namespace drawinglayer
{
void RenderBitmapPrimitive2D_GraphicManager(
OutputDevice& rOutDev,
const BitmapEx& rBitmapEx,
const basegfx::B2DHomMatrix& rTransform)
{
// prepare attributes
GraphicAttr aAttributes;
// decompose matrix to check for shear, rotate and mirroring
basegfx::B2DVector aScale, aTranslate;
double fRotate, fShearX;
rTransform.decompose(aScale, aTranslate, fRotate, fShearX);
// mirror flags
aAttributes.SetMirrorFlags(
(basegfx::fTools::less(aScale.getX(), 0.0) ? BMP_MIRROR_HORZ : 0)|
(basegfx::fTools::less(aScale.getY(), 0.0) ? BMP_MIRROR_VERT : 0));
// rotation
if(!basegfx::fTools::equalZero(fRotate))
{
double fRotation(fmod(3600.0 - (fRotate * (10.0 / F_PI180)), 3600.0));
aAttributes.SetRotation((sal_uInt16)(fRotation));
}
// prepare Bitmap
basegfx::B2DRange aOutlineRange(0.0, 0.0, 1.0, 1.0);
if(basegfx::fTools::equalZero(fRotate))
{
aOutlineRange.transform(rTransform);
}
else
{
// if rotated, create the unrotated output rectangle for the GraphicManager paint
basegfx::B2DHomMatrix aSimpleObjectMatrix;
aSimpleObjectMatrix.scale(fabs(aScale.getX()), fabs(aScale.getY()));
aSimpleObjectMatrix.translate(aTranslate.getX(), aTranslate.getY());
aOutlineRange.transform(aSimpleObjectMatrix);
}
// prepare dest coor
const Rectangle aDestRectPixel(
basegfx::fround(aOutlineRange.getMinX()), basegfx::fround(aOutlineRange.getMinY()),
basegfx::fround(aOutlineRange.getMaxX()), basegfx::fround(aOutlineRange.getMaxY()));
// paint it using GraphicManager
Graphic aGraphic(rBitmapEx);
GraphicObject aGraphicObject(aGraphic);
aGraphicObject.Draw(&rOutDev, aDestRectPixel.TopLeft(), aDestRectPixel.GetSize(), &aAttributes);
}
void RenderBitmapPrimitive2D_BitmapEx(
OutputDevice& rOutDev,
const BitmapEx& rBitmapEx,
const basegfx::B2DHomMatrix& rTransform)
{
// only translate and scale, use vcl's DrawBitmapEx().
BitmapEx aContent(rBitmapEx);
// prepare dest coor. Necessary to expand since vcl's DrawBitmapEx draws one pix less
basegfx::B2DRange aOutlineRange(0.0, 0.0, 1.0, 1.0);
aOutlineRange.transform(rTransform);
const Rectangle aDestRectPixel(
basegfx::fround(aOutlineRange.getMinX()), basegfx::fround(aOutlineRange.getMinY()),
basegfx::fround(aOutlineRange.getMaxX()), basegfx::fround(aOutlineRange.getMaxY()));
// decompose matrix to check for shear, rotate and mirroring
basegfx::B2DVector aScale, aTranslate;
double fRotate, fShearX;
rTransform.decompose(aScale, aTranslate, fRotate, fShearX);
// Check mirroring.
sal_uInt32 nMirrorFlags(BMP_MIRROR_NONE);
if(basegfx::fTools::less(aScale.getX(), 0.0))
{
nMirrorFlags |= BMP_MIRROR_HORZ;
}
if(basegfx::fTools::less(aScale.getY(), 0.0))
{
nMirrorFlags |= BMP_MIRROR_VERT;
}
if(BMP_MIRROR_NONE != nMirrorFlags)
{
aContent.Mirror(nMirrorFlags);
}
// draw bitmap
rOutDev.DrawBitmapEx(aDestRectPixel.TopLeft(), aDestRectPixel.GetSize(), aContent);
}
void RenderBitmapPrimitive2D_self(
OutputDevice& rOutDev,
const BitmapEx& rBitmapEx,
const basegfx::B2DHomMatrix& rTransform)
{
// process self with free transformation (containing shear and rotate). Get dest rect in pixels.
basegfx::B2DRange aOutlineRange(0.0, 0.0, 1.0, 1.0);
aOutlineRange.transform(rTransform);
const Rectangle aDestRectLogic(
basegfx::fround(aOutlineRange.getMinX()), basegfx::fround(aOutlineRange.getMinY()),
basegfx::fround(aOutlineRange.getMaxX()), basegfx::fround(aOutlineRange.getMaxY()));
const Rectangle aDestRectPixel(rOutDev.LogicToPixel(aDestRectLogic));
// intersect with output pixel size
const Rectangle aOutputRectPixel(Point(), rOutDev.GetOutputSizePixel());
const Rectangle aCroppedRectPixel(aDestRectPixel.GetIntersection(aOutputRectPixel));
if(!aCroppedRectPixel.IsEmpty())
{
// build transform from pixel in aDestination to pixel in rBitmapEx
basegfx::B2DHomMatrix aTransform;
// from relative in aCroppedRectPixel to relative in aDestRectPixel
aTransform.translate(aCroppedRectPixel.Left() - aDestRectPixel.Left(), aCroppedRectPixel.Top() - aDestRectPixel.Top());
// from relative in aDestRectPixel to absolute Logic
aTransform.scale((double)aDestRectLogic.getWidth() / (double)aDestRectPixel.getWidth(), (double)aDestRectLogic.getHeight() / (double)aDestRectPixel.getHeight());
aTransform.translate(aDestRectLogic.Left(), aDestRectLogic.Top());
// from absolute in Logic to unified object coordinates (0.0 .. 1.0 in x and y)
basegfx::B2DHomMatrix aInvBitmapTransform(rTransform);
aInvBitmapTransform.invert();
aTransform = aInvBitmapTransform * aTransform;
// from unit object coordinates to rBitmapEx pixel coordintes
const Size aSourceSizePixel(rBitmapEx.GetSizePixel());
aTransform.scale(aSourceSizePixel.getWidth() - 1L, aSourceSizePixel.getHeight() - 1L);
// create bitmap using source, destination and linear back-transformation
BitmapEx aDestination = impTransformBitmapEx(rBitmapEx, aCroppedRectPixel, aTransform);
// paint
const bool bWasEnabled(rOutDev.IsMapModeEnabled());
rOutDev.EnableMapMode(false);
rOutDev.DrawBitmapEx(aCroppedRectPixel.TopLeft(), aDestination);
rOutDev.EnableMapMode(bWasEnabled);
}
}
} // end of namespace drawinglayer
//////////////////////////////////////////////////////////////////////////////
// eof
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