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