133 lines
6.1 KiB
C++
133 lines
6.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2005 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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************************************************************************/
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// MARKER(update_precomp.py): autogen include statement, do not remove
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#include "precompiled_drawinglayer.hxx"
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#include <drawinglayer/primitive2d/unifiedtransparenceprimitive2d.hxx>
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#include <basegfx/polygon/b2dpolygon.hxx>
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#include <basegfx/polygon/b2dpolygontools.hxx>
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#include <basegfx/color/bcolor.hxx>
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#include <drawinglayer/primitive2d/polypolygonprimitive2d.hxx>
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#include <drawinglayer/primitive2d/transparenceprimitive2d.hxx>
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#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
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#include <drawinglayer/primitive2d/polygonprimitive2d.hxx>
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//////////////////////////////////////////////////////////////////////////////
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using namespace com::sun::star;
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//////////////////////////////////////////////////////////////////////////////
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namespace drawinglayer
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{
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namespace primitive2d
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{
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UnifiedTransparencePrimitive2D::UnifiedTransparencePrimitive2D(
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const Primitive2DSequence& rChildren,
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double fTransparence)
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: GroupPrimitive2D(rChildren),
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mfTransparence(fTransparence)
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{
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}
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bool UnifiedTransparencePrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
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{
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if(GroupPrimitive2D::operator==(rPrimitive))
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{
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const UnifiedTransparencePrimitive2D& rCompare = (UnifiedTransparencePrimitive2D&)rPrimitive;
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return (getTransparence() == rCompare.getTransparence());
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}
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return false;
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}
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basegfx::B2DRange UnifiedTransparencePrimitive2D::getB2DRange(const geometry::ViewInformation2D& rViewInformation) const
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{
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// do not use the fallback to decomposition here since for a correct BoundRect we also
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// need invisible (1.0 == getTransparence()) geometry; these would be deleted in the decomposition
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return getB2DRangeFromPrimitive2DSequence(getChildren(), rViewInformation);
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}
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Primitive2DSequence UnifiedTransparencePrimitive2D::get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
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{
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if(0.0 == getTransparence())
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{
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// no transparence used, so just use the content
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return getChildren();
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}
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else if(getTransparence() > 0.0 && getTransparence() < 1.0)
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{
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// The idea is to create a TransparencePrimitive2D with transparent content using a fill color
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// corresponding to the transparence value. Problem is that in most systems, the right
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// and bottom pixel array is not filled when filling polygons, thus this would not
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// always produce a complete transparent bitmap. There are some solutions:
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//
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// - Grow the used polygon range by one discrete unit in X and Y. This
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// will make the decomposition view-dependent.
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//
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// - For all filled polygon renderings, dra wthe polygon outline extra. This
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// would lead to unwanted side effects when using concatenated polygons.
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//
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// - At this decomposition, add a filled polygon and a hairline polygon. This
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// solution stays view-independent.
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//
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// I will take the last one here. The small overhead of two primitives will only be
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// used when UnifiedTransparencePrimitive2D is not handled directly.
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const basegfx::B2DRange aPolygonRange(getB2DRangeFromPrimitive2DSequence(getChildren(), rViewInformation));
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const basegfx::B2DPolygon aPolygon(basegfx::tools::createPolygonFromRect(aPolygonRange));
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const basegfx::BColor aGray(getTransparence(), getTransparence(), getTransparence());
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Primitive2DSequence aTransparenceContent(2);
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aTransparenceContent[0] = Primitive2DReference(new PolyPolygonColorPrimitive2D(basegfx::B2DPolyPolygon(aPolygon), aGray));
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aTransparenceContent[1] = Primitive2DReference(new PolygonHairlinePrimitive2D(aPolygon, aGray));
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// create sub-transparence group with a gray-colored rectangular fill polygon
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const Primitive2DReference xRefB(new TransparencePrimitive2D(getChildren(), aTransparenceContent));
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return Primitive2DSequence(&xRefB, 1L);
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}
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else
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{
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// completely transparent or invalid definition, add nothing
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return Primitive2DSequence();
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}
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}
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// provide unique ID
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ImplPrimitrive2DIDBlock(UnifiedTransparencePrimitive2D, PRIMITIVE2D_ID_UNIFIEDTRANSPARENCEPRIMITIVE2D)
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} // end of namespace primitive2d
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} // end of namespace drawinglayer
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//////////////////////////////////////////////////////////////////////////////
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// eof
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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