368 lines
15 KiB
C++
368 lines
15 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <drawinglayer/primitive2d/patternfillprimitive2d.hxx>
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#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
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#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
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#include <drawinglayer/primitive2d/bitmapprimitive2d.hxx>
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#include <basegfx/polygon/b2dpolygontools.hxx>
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#include <basegfx/matrix/b2dhommatrixtools.hxx>
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#include <texture/texture.hxx>
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#include <drawinglayer/primitive2d/maskprimitive2d.hxx>
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#include <drawinglayer/geometry/viewinformation2d.hxx>
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#include <toolkit/helper/vclunohelper.hxx>
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#include <drawinglayer/converters.hxx>
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#include <utility>
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using namespace com::sun::star;
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#define MAXIMUM_SQUARE_LENGTH (186.0)
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#define MINIMUM_SQUARE_LENGTH (16.0)
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#define MINIMUM_TILES_LENGTH (3)
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namespace drawinglayer::primitive2d
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{
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void PatternFillPrimitive2D::calculateNeededDiscreteBufferSize(
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sal_uInt32& rWidth,
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sal_uInt32& rHeight,
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const geometry::ViewInformation2D& rViewInformation) const
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{
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// reset parameters
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rWidth = rHeight = 0;
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// check if resolution is in the range which may be buffered
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const basegfx::B2DPolyPolygon& rMaskPolygon = getMask();
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const basegfx::B2DRange aMaskRange(rMaskPolygon.getB2DRange());
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// get discrete rounded up square size of a single tile
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const basegfx::B2DHomMatrix aMaskRangeTransformation(
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basegfx::utils::createScaleTranslateB2DHomMatrix(
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aMaskRange.getRange(),
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aMaskRange.getMinimum()));
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const basegfx::B2DHomMatrix aTransform(
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rViewInformation.getObjectToViewTransformation() * aMaskRangeTransformation);
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const basegfx::B2DPoint aTopLeft(aTransform * getReferenceRange().getMinimum());
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const basegfx::B2DPoint aX(aTransform * basegfx::B2DPoint(getReferenceRange().getMaxX(), getReferenceRange().getMinY()));
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const basegfx::B2DPoint aY(aTransform * basegfx::B2DPoint(getReferenceRange().getMinX(), getReferenceRange().getMaxY()));
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const double fW(basegfx::B2DVector(aX - aTopLeft).getLength());
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const double fH(basegfx::B2DVector(aY - aTopLeft).getLength());
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const double fSquare(fW * fH);
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if(fSquare <= 0.0)
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return;
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// check if less than a maximum square pixels is used
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static const sal_uInt32 fMaximumSquare(MAXIMUM_SQUARE_LENGTH * MAXIMUM_SQUARE_LENGTH);
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if(fSquare >= fMaximumSquare)
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return;
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// calculate needed number of tiles and check if used more than a minimum count
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const texture::GeoTexSvxTiled aTiling(getReferenceRange());
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const sal_uInt32 nTiles(aTiling.getNumberOfTiles());
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static const sal_uInt32 nMinimumTiles(MINIMUM_TILES_LENGTH * MINIMUM_TILES_LENGTH);
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if(nTiles < nMinimumTiles)
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return;
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rWidth = basegfx::fround(ceil(fW));
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rHeight = basegfx::fround(ceil(fH));
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static const sal_uInt32 fMinimumSquare(MINIMUM_SQUARE_LENGTH * MINIMUM_SQUARE_LENGTH);
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if(fSquare < fMinimumSquare)
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{
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const double fRel(fW/fH);
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rWidth = basegfx::fround(sqrt(fMinimumSquare * fRel));
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rHeight = basegfx::fround(sqrt(fMinimumSquare / fRel));
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}
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}
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void PatternFillPrimitive2D::getTileSize(
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sal_uInt32& rWidth,
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sal_uInt32& rHeight,
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const geometry::ViewInformation2D& rViewInformation) const
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{
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const basegfx::B2DRange aMaskRange(getMask().getB2DRange());
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// get discrete rounded up square size of a single tile
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const basegfx::B2DHomMatrix aMaskRangeTransformation(
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basegfx::utils::createScaleTranslateB2DHomMatrix(
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aMaskRange.getRange(),
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aMaskRange.getMinimum()));
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const basegfx::B2DHomMatrix aTransform(
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rViewInformation.getObjectToViewTransformation() * aMaskRangeTransformation);
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const basegfx::B2DPoint aTopLeft(aTransform * getReferenceRange().getMinimum());
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const basegfx::B2DPoint aX(aTransform * basegfx::B2DPoint(getReferenceRange().getMaxX(), getReferenceRange().getMinY()));
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const basegfx::B2DPoint aY(aTransform * basegfx::B2DPoint(getReferenceRange().getMinX(), getReferenceRange().getMaxY()));
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const double fW(basegfx::B2DVector(aX - aTopLeft).getLength());
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const double fH(basegfx::B2DVector(aY - aTopLeft).getLength());
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rWidth = basegfx::fround(ceil(fW));
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rHeight = basegfx::fround(ceil(fH));
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}
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Primitive2DContainer PatternFillPrimitive2D::createContent(const geometry::ViewInformation2D& rViewInformation) const
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{
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Primitive2DContainer aContent;
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// see if buffering is wanted. If so, create buffered content in given resolution
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if(0 != mnDiscreteWidth && 0 != mnDiscreteHeight)
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{
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const geometry::ViewInformation2D aViewInformation2D;
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primitive2d::Primitive2DContainer xEmbedSeq {
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new primitive2d::TransformPrimitive2D(
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basegfx::utils::createScaleB2DHomMatrix(mnDiscreteWidth, mnDiscreteHeight),
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Primitive2DContainer(getChildren()))
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};
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const BitmapEx aBitmapEx(
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convertToBitmapEx(
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std::move(xEmbedSeq),
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aViewInformation2D,
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mnDiscreteWidth,
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mnDiscreteHeight,
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mnDiscreteWidth * mnDiscreteHeight));
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if(!aBitmapEx.IsEmpty())
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{
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const Size& rBmpPix = aBitmapEx.GetSizePixel();
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if(rBmpPix.Width() > 0 && rBmpPix.Height() > 0)
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{
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const primitive2d::Primitive2DReference xEmbedRefBitmap(
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new primitive2d::BitmapPrimitive2D(
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aBitmapEx,
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basegfx::B2DHomMatrix()));
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aContent = primitive2d::Primitive2DContainer { xEmbedRefBitmap };
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}
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}
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}
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if(aContent.empty())
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{
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// buffering was not tried or did fail - reset remembered buffered size
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// in any case
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PatternFillPrimitive2D* pThat = const_cast< PatternFillPrimitive2D* >(this);
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pThat->mnDiscreteWidth = pThat->mnDiscreteHeight = 0;
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// use children as default context
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aContent = getChildren();
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// check if content needs to be clipped
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const basegfx::B2DRange aUnitRange(0.0, 0.0, 1.0, 1.0);
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const basegfx::B2DRange aContentRange(aContent.getB2DRange(rViewInformation));
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if(!aUnitRange.isInside(aContentRange))
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{
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const Primitive2DReference xRef(
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new MaskPrimitive2D(
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basegfx::B2DPolyPolygon(basegfx::utils::createPolygonFromRect(aUnitRange)),
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std::move(aContent)));
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aContent = Primitive2DContainer { xRef };
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}
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}
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return aContent;
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}
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// create buffered content in given resolution
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BitmapEx PatternFillPrimitive2D::createTileImage(sal_uInt32 nWidth, sal_uInt32 nHeight) const
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{
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const geometry::ViewInformation2D aViewInformation2D;
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Primitive2DContainer aContent(createContent(aViewInformation2D));
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const primitive2d::Primitive2DReference xEmbedRef(
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new primitive2d::TransformPrimitive2D(
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basegfx::utils::createScaleB2DHomMatrix(nWidth, nHeight),
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std::move(aContent)));
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primitive2d::Primitive2DContainer xEmbedSeq { xEmbedRef };
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return convertToBitmapEx(
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std::move(xEmbedSeq),
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aViewInformation2D,
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nWidth,
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nHeight,
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nWidth * nHeight);
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}
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Primitive2DReference PatternFillPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
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{
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Primitive2DContainer aRetval;
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if(getChildren().empty())
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return nullptr;
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if(!(!getReferenceRange().isEmpty() && getReferenceRange().getWidth() > 0.0 && getReferenceRange().getHeight() > 0.0))
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return nullptr;
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const basegfx::B2DRange aMaskRange(getMask().getB2DRange());
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if(!(!aMaskRange.isEmpty() && aMaskRange.getWidth() > 0.0 && aMaskRange.getHeight() > 0.0))
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return nullptr;
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// create tiling matrices
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std::vector< basegfx::B2DHomMatrix > aMatrices;
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texture::GeoTexSvxTiled aTiling(getReferenceRange());
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aTiling.appendTransformations(aMatrices);
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// create content
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Primitive2DContainer aContent(createContent(rViewInformation));
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// resize result
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aRetval.resize(aMatrices.size());
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// create one primitive for each matrix
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for(size_t a(0); a < aMatrices.size(); a++)
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{
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aRetval[a] = new TransformPrimitive2D(
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aMatrices[a],
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Primitive2DContainer(aContent));
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}
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// transform result which is in unit coordinates to mask's object coordinates
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{
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const basegfx::B2DHomMatrix aMaskTransform(
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basegfx::utils::createScaleTranslateB2DHomMatrix(
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aMaskRange.getRange(),
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aMaskRange.getMinimum()));
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aRetval = Primitive2DContainer {
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new TransformPrimitive2D(
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aMaskTransform,
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std::move(aRetval))
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};
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}
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// embed result in mask
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return
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new MaskPrimitive2D(
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getMask(),
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std::move(aRetval));
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}
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PatternFillPrimitive2D::PatternFillPrimitive2D(
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basegfx::B2DPolyPolygon aMask,
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Primitive2DContainer&& rChildren,
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const basegfx::B2DRange& rReferenceRange)
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: maMask(std::move(aMask)),
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maChildren(std::move(rChildren)),
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maReferenceRange(rReferenceRange),
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mnDiscreteWidth(0),
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mnDiscreteHeight(0)
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{
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}
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bool PatternFillPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
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{
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if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
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{
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const PatternFillPrimitive2D& rCompare = static_cast< const PatternFillPrimitive2D& >(rPrimitive);
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return (getMask() == rCompare.getMask()
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&& getChildren() == rCompare.getChildren()
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&& getReferenceRange() == rCompare.getReferenceRange());
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}
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return false;
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}
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basegfx::B2DRange PatternFillPrimitive2D::getB2DRange(const geometry::ViewInformation2D& /* rViewInformation */ ) const
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{
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return getMask().getB2DRange();
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}
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void PatternFillPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const
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{
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// The existing buffered decomposition uses a buffer in the remembered
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// size or none if sizes are zero. Get new needed sizes which depend on
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// the given ViewInformation
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bool bResetBuffering = false;
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sal_uInt32 nW(0);
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sal_uInt32 nH(0);
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calculateNeededDiscreteBufferSize(nW, nH, rViewInformation);
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const bool bBufferingCurrentlyUsed(0 != mnDiscreteWidth && 0 != mnDiscreteHeight);
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const bool bBufferingNextUsed(0 != nW && 0 != nH);
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if(bBufferingNextUsed)
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{
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// buffering is now possible
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if(bBufferingCurrentlyUsed)
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{
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if(nW > mnDiscreteWidth || nH > mnDiscreteHeight)
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{
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// Higher resolution is needed than used in the existing buffered
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// decomposition - create new one
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bResetBuffering = true;
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}
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else if(double(nW * nH) / double(mnDiscreteWidth * mnDiscreteHeight) <= 0.5)
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{
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// Size has shrunk for 50% or more - it's worth to refresh the buffering
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// to spare some resources
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bResetBuffering = true;
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}
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}
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else
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{
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// currently no buffering used - reset evtl. unbuffered
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// decomposition to start buffering
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bResetBuffering = true;
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}
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}
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else
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{
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// buffering is no longer possible
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if(bBufferingCurrentlyUsed)
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{
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// reset decomposition to allow creation of unbuffered one
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bResetBuffering = true;
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}
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}
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if(bResetBuffering)
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{
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PatternFillPrimitive2D* pThat = const_cast< PatternFillPrimitive2D* >(this);
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pThat->mnDiscreteWidth = nW;
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pThat->mnDiscreteHeight = nH;
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pThat->setBuffered2DDecomposition(nullptr);
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}
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// call parent
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BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation);
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}
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sal_Int64 PatternFillPrimitive2D::estimateUsage()
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{
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size_t nRet(0);
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for (auto& it : getChildren())
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if (it)
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nRet += it->estimateUsage();
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return nRet;
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}
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// provide unique ID
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sal_uInt32 PatternFillPrimitive2D::getPrimitive2DID() const
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{
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return PRIMITIVE2D_ID_PATTERNFILLPRIMITIVE2D;
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}
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} // end of namespace
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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