822 lines
42 KiB
C++
822 lines
42 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/*
|
|
* This file is part of the LibreOffice project.
|
|
*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
*
|
|
* This file incorporates work covered by the following license notice:
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed
|
|
* with this work for additional information regarding copyright
|
|
* ownership. The ASF licenses this file to you under the Apache
|
|
* License, Version 2.0 (the "License"); you may not use this file
|
|
* except in compliance with the License. You may obtain a copy of
|
|
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
|
|
*/
|
|
|
|
#include <svgsvgnode.hxx>
|
|
#include <drawinglayer/geometry/viewinformation2d.hxx>
|
|
#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
|
|
#include <drawinglayer/primitive2d/maskprimitive2d.hxx>
|
|
#include <basegfx/polygon/b2dpolygontools.hxx>
|
|
#include <basegfx/polygon/b2dpolygon.hxx>
|
|
#include <basegfx/matrix/b2dhommatrixtools.hxx>
|
|
#include <drawinglayer/primitive2d/PolygonHairlinePrimitive2D.hxx>
|
|
#include <drawinglayer/primitive2d/hiddengeometryprimitive2d.hxx>
|
|
#include <o3tl/unit_conversion.hxx>
|
|
#include <svgdocument.hxx>
|
|
|
|
namespace svgio::svgreader
|
|
{
|
|
SvgSvgNode::SvgSvgNode(
|
|
SvgDocument& rDocument,
|
|
SvgNode* pParent)
|
|
: SvgNode(SVGToken::Svg, rDocument, pParent),
|
|
maSvgStyleAttributes(*this),
|
|
mbStyleAttributesInitialized(false) // #i125258#
|
|
{
|
|
}
|
|
|
|
// #i125258#
|
|
void SvgSvgNode::initializeStyleAttributes()
|
|
{
|
|
if(mbStyleAttributesInitialized)
|
|
return;
|
|
|
|
// #i125258# determine if initial values need to be initialized with hard values
|
|
// for the case that this is the outmost SVG statement and it has no parent
|
|
// stale (CssStyle for svg may be defined)
|
|
bool bSetInitialValues(true);
|
|
|
|
if(getParent())
|
|
{
|
|
// #i125258# no initial values when it's a SVG element embedded in SVG
|
|
bSetInitialValues = false;
|
|
}
|
|
|
|
if(bSetInitialValues)
|
|
{
|
|
const SvgStyleAttributes* pStyles = getSvgStyleAttributes();
|
|
|
|
if(pStyles && pStyles->getCssStyleOrParentStyle())
|
|
{
|
|
// SVG has a parent style (probably CssStyle), check if fill is set there anywhere
|
|
// already. If yes, do not set the default fill (black)
|
|
bool bFillSet(false);
|
|
const SvgStyleAttributes* pParentStyle = pStyles->getCssStyleOrParentStyle();
|
|
|
|
while(pParentStyle && !bFillSet)
|
|
{
|
|
bFillSet = pParentStyle->isFillSet();
|
|
pParentStyle = pParentStyle->getCssStyleOrParentStyle();
|
|
}
|
|
|
|
if(bFillSet)
|
|
{
|
|
// #125258# no initial values when SVG has a parent style at which a fill
|
|
// is already set
|
|
bSetInitialValues = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(bSetInitialValues)
|
|
{
|
|
// #i125258# only set if not yet initialized (SvgSvgNode::parseAttribute is already done,
|
|
// just setting may revert an already set valid value)
|
|
if(!maSvgStyleAttributes.isFillSet())
|
|
{
|
|
// #i125258# initial fill is black (see SVG1.1 spec)
|
|
maSvgStyleAttributes.setFill(SvgPaint(basegfx::BColor(0.0, 0.0, 0.0), true, true));
|
|
}
|
|
}
|
|
|
|
mbStyleAttributesInitialized = true;
|
|
}
|
|
|
|
SvgSvgNode::~SvgSvgNode()
|
|
{
|
|
}
|
|
|
|
const SvgStyleAttributes* SvgSvgNode::getSvgStyleAttributes() const
|
|
{
|
|
// #i125258# svg node can have CssStyles, too, so check for it here
|
|
return checkForCssStyle(maSvgStyleAttributes);
|
|
}
|
|
|
|
void SvgSvgNode::parseAttribute(SVGToken aSVGToken, const OUString& aContent)
|
|
{
|
|
// call parent
|
|
SvgNode::parseAttribute(aSVGToken, aContent);
|
|
|
|
// read style attributes
|
|
maSvgStyleAttributes.parseStyleAttribute(aSVGToken, aContent);
|
|
|
|
// parse own
|
|
switch(aSVGToken)
|
|
{
|
|
case SVGToken::Style:
|
|
{
|
|
readLocalCssStyle(aContent);
|
|
break;
|
|
}
|
|
case SVGToken::ViewBox:
|
|
{
|
|
const basegfx::B2DRange aRange(readViewBox(aContent, *this));
|
|
|
|
if(!aRange.isEmpty())
|
|
{
|
|
setViewBox(&aRange);
|
|
}
|
|
break;
|
|
}
|
|
case SVGToken::PreserveAspectRatio:
|
|
{
|
|
maSvgAspectRatio = readSvgAspectRatio(aContent);
|
|
break;
|
|
}
|
|
case SVGToken::X:
|
|
{
|
|
SvgNumber aNum;
|
|
|
|
if(readSingleNumber(aContent, aNum))
|
|
{
|
|
maX = aNum;
|
|
}
|
|
break;
|
|
}
|
|
case SVGToken::Y:
|
|
{
|
|
SvgNumber aNum;
|
|
|
|
if(readSingleNumber(aContent, aNum))
|
|
{
|
|
maY = aNum;
|
|
}
|
|
break;
|
|
}
|
|
case SVGToken::Width:
|
|
{
|
|
SvgNumber aNum;
|
|
|
|
if(readSingleNumber(aContent, aNum))
|
|
{
|
|
if(aNum.isPositive())
|
|
{
|
|
maWidth = aNum;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case SVGToken::Height:
|
|
{
|
|
SvgNumber aNum;
|
|
|
|
if(readSingleNumber(aContent, aNum))
|
|
{
|
|
if(aNum.isPositive())
|
|
{
|
|
maHeight = aNum;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case SVGToken::Version:
|
|
{
|
|
SvgNumber aNum;
|
|
|
|
if(readSingleNumber(aContent, aNum))
|
|
{
|
|
maVersion = aNum;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void SvgSvgNode::seekReferenceWidth(double& fWidth, bool& bHasFound) const
|
|
{
|
|
if (!getParent() || bHasFound)
|
|
{
|
|
return;
|
|
}
|
|
const SvgSvgNode* pParentSvgSvgNode = nullptr;
|
|
// enclosing svg might have relative width, need to cumulate them till they are
|
|
// resolved somewhere up in the node tree
|
|
double fPercentage(1.0);
|
|
for(const SvgNode* pParent = getParent(); pParent && !bHasFound; pParent = pParent->getParent())
|
|
{
|
|
// dynamic_cast results Null-pointer for not SvgSvgNode and so skips them in if condition
|
|
pParentSvgSvgNode = dynamic_cast< const SvgSvgNode* >(pParent);
|
|
if (pParentSvgSvgNode)
|
|
{
|
|
if (pParentSvgSvgNode->getViewBox())
|
|
{
|
|
// viewbox values are already in 'user unit'.
|
|
fWidth = pParentSvgSvgNode->getViewBox()->getWidth() * fPercentage;
|
|
bHasFound = true;
|
|
}
|
|
else
|
|
{
|
|
// take absolute value or cumulate percentage
|
|
if (pParentSvgSvgNode->getWidth().isSet())
|
|
{
|
|
if (SvgUnit::percent == pParentSvgSvgNode->getWidth().getUnit())
|
|
{
|
|
fPercentage *= pParentSvgSvgNode->getWidth().getNumber() * 0.01;
|
|
}
|
|
else
|
|
{
|
|
fWidth = pParentSvgSvgNode->getWidth().solveNonPercentage(*pParentSvgSvgNode) * fPercentage;
|
|
bHasFound = true;
|
|
}
|
|
} // not set => width=100% => factor 1, no need for else
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void SvgSvgNode::seekReferenceHeight(double& fHeight, bool& bHasFound) const
|
|
{
|
|
if (!getParent() || bHasFound)
|
|
{
|
|
return;
|
|
}
|
|
const SvgSvgNode* pParentSvgSvgNode = nullptr;
|
|
// enclosing svg might have relative width and height, need to cumulate them till they are
|
|
// resolved somewhere up in the node tree
|
|
double fPercentage(1.0);
|
|
for(const SvgNode* pParent = getParent(); pParent && !bHasFound; pParent = pParent->getParent())
|
|
{
|
|
// dynamic_cast results Null-pointer for not SvgSvgNode and so skips them in if condition
|
|
pParentSvgSvgNode = dynamic_cast< const SvgSvgNode* >(pParent);
|
|
if (pParentSvgSvgNode)
|
|
{
|
|
if (pParentSvgSvgNode->getViewBox())
|
|
{
|
|
// viewbox values are already in 'user unit'.
|
|
fHeight = pParentSvgSvgNode->getViewBox()->getHeight() * fPercentage;
|
|
bHasFound = true;
|
|
}
|
|
else
|
|
{
|
|
// take absolute value or cumulate percentage
|
|
if (pParentSvgSvgNode->getHeight().isSet())
|
|
{
|
|
if (SvgUnit::percent == pParentSvgSvgNode->getHeight().getUnit())
|
|
{
|
|
fPercentage *= pParentSvgSvgNode->getHeight().getNumber() * 0.01;
|
|
}
|
|
else
|
|
{
|
|
fHeight = pParentSvgSvgNode->getHeight().solveNonPercentage(*pParentSvgSvgNode) * fPercentage;
|
|
bHasFound = true;
|
|
}
|
|
} // not set => height=100% => factor 1, no need for else
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// ToDo: Consider attribute overflow in method decomposeSvgNode
|
|
void SvgSvgNode::decomposeSvgNode(drawinglayer::primitive2d::Primitive2DContainer& rTarget, bool bReferenced) const
|
|
{
|
|
drawinglayer::primitive2d::Primitive2DContainer aSequence;
|
|
|
|
// #i125258# check now if we need to init some style settings locally. Do not do this
|
|
// in the constructor, there is not yet information e.g. about existing CssStyles.
|
|
// Here all nodes are read and interpreted
|
|
const_cast< SvgSvgNode* >(this)->initializeStyleAttributes();
|
|
|
|
// decompose children
|
|
SvgNode::decomposeSvgNode(aSequence, bReferenced);
|
|
|
|
if(!aSequence.empty())
|
|
{
|
|
if(getParent())
|
|
{
|
|
// #i122594# if width/height is not given, it's 100% (see 5.1.2 The 'svg' element in SVG1.1 spec).
|
|
// If it is relative, the question is to what. The previous implementation assumed relative to the
|
|
// local ViewBox which is implied by (4.2 Basic data types):
|
|
|
|
// "Note that the non-property <length> definition also allows a percentage unit identifier.
|
|
// The meaning of a percentage length value depends on the attribute for which the percentage
|
|
// length value has been specified. Two common cases are: (a) when a percentage length value
|
|
// represents a percentage of the viewport width or height (refer to the section that discusses
|
|
// units in general), and (b) when a percentage length value represents a percentage of the
|
|
// bounding box width or height on a given object (refer to the section that describes object
|
|
// bounding box units)."
|
|
|
|
// Comparisons with common browsers show that it's mostly interpreted relative to the viewport
|
|
// of the parent, and so does the new implementation.
|
|
|
|
// Extract known viewport data
|
|
// bXXXIsAbsolute tracks whether relative values could be resolved to absolute values
|
|
|
|
// If width or height is not provided, the default 100% is used, see SVG 1.1 section 5.1.2
|
|
// value 0.0 here is only to initialize variable
|
|
bool bWidthIsAbsolute(getWidth().isSet() && SvgUnit::percent != getWidth().getUnit());
|
|
double fW( bWidthIsAbsolute ? getWidth().solveNonPercentage(*this) : 0.0);
|
|
|
|
bool bHeightIsAbsolute(getHeight().isSet() && SvgUnit::percent != getHeight().getUnit());
|
|
double fH( bHeightIsAbsolute ? getHeight().solveNonPercentage(*this) : 0.0);
|
|
|
|
// If x or y not provided, then default 0.0 is used, see SVG 1.1 Section 5.1.2
|
|
bool bXIsAbsolute((getX().isSet() && SvgUnit::percent != getX().getUnit()) || !getX().isSet());
|
|
double fX( bXIsAbsolute && getX().isSet() ? getX().solveNonPercentage(*this) : 0.0);
|
|
|
|
bool bYIsAbsolute((getY().isSet() && SvgUnit::percent != getY().getUnit()) || !getY().isSet());
|
|
double fY( bYIsAbsolute && getY().isSet() ? getY().solveNonPercentage(*this) : 0.0);
|
|
|
|
if ( !bXIsAbsolute || !bWidthIsAbsolute)
|
|
{
|
|
// get width of enclosing svg and resolve percentage in x and width;
|
|
double fWReference(0.0);
|
|
bool bHasFoundWidth(false);
|
|
seekReferenceWidth(fWReference, bHasFoundWidth);
|
|
if (!bHasFoundWidth)
|
|
{
|
|
if (getViewBox())
|
|
{
|
|
fWReference = getViewBox()->getWidth();
|
|
}
|
|
else
|
|
{
|
|
// Even outermost svg has not all information to resolve relative values,
|
|
// I use content itself as fallback to set missing values for viewport
|
|
// Any better idea for such ill structured svg documents?
|
|
const basegfx::B2DRange aChildRange(
|
|
aSequence.getB2DRange(
|
|
drawinglayer::geometry::ViewInformation2D()));
|
|
fWReference = aChildRange.getWidth();
|
|
}
|
|
}
|
|
// referenced values are already in 'user unit'
|
|
if (!bXIsAbsolute)
|
|
{
|
|
fX = getX().getNumber() * 0.01 * fWReference;
|
|
}
|
|
if (!bWidthIsAbsolute)
|
|
{
|
|
fW = (getWidth().isSet() ? getWidth().getNumber() *0.01 : 1.0) * fWReference;
|
|
}
|
|
}
|
|
|
|
if ( !bYIsAbsolute || !bHeightIsAbsolute)
|
|
{
|
|
// get height of enclosing svg and resolve percentage in y and height
|
|
double fHReference(0.0);
|
|
bool bHasFoundHeight(false);
|
|
seekReferenceHeight(fHReference, bHasFoundHeight);
|
|
if (!bHasFoundHeight)
|
|
{
|
|
if (getViewBox())
|
|
{
|
|
fHReference = getViewBox()->getHeight();
|
|
}
|
|
else
|
|
{
|
|
// Even outermost svg has not all information to resolve relative values,
|
|
// I use content itself as fallback to set missing values for viewport
|
|
// Any better idea for such ill structured svg documents?
|
|
const basegfx::B2DRange aChildRange(
|
|
aSequence.getB2DRange(
|
|
drawinglayer::geometry::ViewInformation2D()));
|
|
fHReference = aChildRange.getHeight();
|
|
}
|
|
}
|
|
|
|
// referenced values are already in 'user unit'
|
|
if (!bYIsAbsolute)
|
|
{
|
|
fY = getY().getNumber() * 0.01 * fHReference;
|
|
}
|
|
if (!bHeightIsAbsolute)
|
|
{
|
|
fH = (getHeight().isSet() ? getHeight().getNumber() *0.01 : 1.0) * fHReference;
|
|
}
|
|
}
|
|
|
|
if(getViewBox())
|
|
{
|
|
// SVG 1.1 defines in section 7.7 that a negative value for width or height
|
|
// in viewBox is an error and that 0.0 disables rendering
|
|
if (getViewBox()->getWidth() > 0.0 && getViewBox()->getHeight() > 0.0 && !basegfx::fTools::equalZero(getViewBox()->getWidth()) && !basegfx::fTools::equalZero(getViewBox()->getHeight()))
|
|
{
|
|
// create target range homing x,y, width and height as calculated above
|
|
const basegfx::B2DRange aTarget(fX, fY, fX + fW, fY + fH);
|
|
|
|
if(aTarget.equal(*getViewBox()))
|
|
{
|
|
// no mapping needed, append
|
|
rTarget.append(aSequence);
|
|
}
|
|
else
|
|
{
|
|
// create mapping
|
|
const SvgAspectRatio& rRatio = getSvgAspectRatio();
|
|
|
|
// let mapping be created from SvgAspectRatio
|
|
const basegfx::B2DHomMatrix aEmbeddingTransform(
|
|
rRatio.createMapping(aTarget, *getViewBox()));
|
|
|
|
// prepare embedding in transformation
|
|
const drawinglayer::primitive2d::Primitive2DReference xRef(
|
|
new drawinglayer::primitive2d::TransformPrimitive2D(
|
|
aEmbeddingTransform,
|
|
drawinglayer::primitive2d::Primitive2DContainer(aSequence)));
|
|
|
|
if(rRatio.isMeetOrSlice())
|
|
{
|
|
// embed in transformation
|
|
rTarget.push_back(xRef);
|
|
}
|
|
else
|
|
{
|
|
// need to embed in MaskPrimitive2D, too
|
|
const drawinglayer::primitive2d::Primitive2DReference xMask(
|
|
new drawinglayer::primitive2d::MaskPrimitive2D(
|
|
basegfx::B2DPolyPolygon(basegfx::utils::createPolygonFromRect(aTarget)),
|
|
drawinglayer::primitive2d::Primitive2DContainer { xRef }));
|
|
|
|
rTarget.push_back(xMask);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else // no viewBox attribute
|
|
{
|
|
// Svg defines that a negative value is an error and that 0.0 disables rendering
|
|
if (fW > 0.0 && fH > 0.0 && !basegfx::fTools::equalZero(fW) && !basegfx::fTools::equalZero(fH))
|
|
{
|
|
if(!basegfx::fTools::equalZero(fX) || !basegfx::fTools::equalZero(fY))
|
|
{
|
|
// embed in transform
|
|
const drawinglayer::primitive2d::Primitive2DReference xRef(
|
|
new drawinglayer::primitive2d::TransformPrimitive2D(
|
|
basegfx::utils::createTranslateB2DHomMatrix(fX, fY),
|
|
std::move(aSequence)));
|
|
|
|
aSequence = drawinglayer::primitive2d::Primitive2DContainer { xRef, };
|
|
}
|
|
|
|
// embed in MaskPrimitive2D to clip
|
|
const drawinglayer::primitive2d::Primitive2DReference xMask(
|
|
new drawinglayer::primitive2d::MaskPrimitive2D(
|
|
basegfx::B2DPolyPolygon(
|
|
basegfx::utils::createPolygonFromRect(
|
|
basegfx::B2DRange(fX, fY, fX + fW, fY + fH))),
|
|
drawinglayer::primitive2d::Primitive2DContainer(aSequence)));
|
|
|
|
// append
|
|
rTarget.push_back(xMask);
|
|
}
|
|
}
|
|
}
|
|
else // Outermost SVG element
|
|
{
|
|
// Svg defines that a negative value is an error and that 0.0 disables rendering
|
|
// isPositive() not usable because it allows 0.0 in contrast to mathematical definition of 'positive'
|
|
const bool bWidthInvalid(getWidth().isSet() && getWidth().getNumber() <= 0.0);
|
|
const bool bHeightInvalid(getHeight().isSet() && getHeight().getNumber() <= 0.0);
|
|
if(!bWidthInvalid && !bHeightInvalid)
|
|
{
|
|
basegfx::B2DRange aSvgCanvasRange; // viewport
|
|
if (const basegfx::B2DRange* pBox = getViewBox())
|
|
{
|
|
// SVG 1.1 defines in section 7.7 that a negative value for width or height
|
|
// in viewBox is an error and that 0.0 disables rendering
|
|
const double fViewBoxWidth = pBox->getWidth();
|
|
const double fViewBoxHeight = pBox->getHeight();
|
|
if (fViewBoxWidth > 0.0 && fViewBoxHeight > 0.0 && !basegfx::fTools::equalZero(fViewBoxWidth) && !basegfx::fTools::equalZero(fViewBoxHeight))
|
|
{
|
|
// The intrinsic aspect ratio of the svg element is given by absolute values of svg width and svg height
|
|
// or by the width and height of the viewBox, if svg width or svg height is relative.
|
|
// see SVG 1.1 section 7.12
|
|
bool bNeedsMapping(true);
|
|
const bool bWidthIsAbsolute(getWidth().isSet() && SvgUnit::percent != getWidth().getUnit());
|
|
const bool bHeightIsAbsolute(getHeight().isSet() && SvgUnit::percent != getHeight().getUnit());
|
|
const double fViewBoxRatio(fViewBoxWidth/fViewBoxHeight);
|
|
if(bWidthIsAbsolute && bHeightIsAbsolute)
|
|
{
|
|
double fW = getWidth().solveNonPercentage(*this);
|
|
double fH = getHeight().solveNonPercentage(*this);
|
|
aSvgCanvasRange = basegfx::B2DRange(0.0, 0.0, fW, fH);
|
|
}
|
|
else if (bWidthIsAbsolute)
|
|
{
|
|
double fW = getWidth().solveNonPercentage(*this);
|
|
double fH = fW / fViewBoxRatio;
|
|
aSvgCanvasRange = basegfx::B2DRange(0.0, 0.0, fW, fH);
|
|
}
|
|
else if (bHeightIsAbsolute)
|
|
{
|
|
double fH = getHeight().solveNonPercentage(*this);
|
|
double fW = fH * fViewBoxRatio;
|
|
aSvgCanvasRange = basegfx::B2DRange(0.0, 0.0, fW, fH);
|
|
}
|
|
else
|
|
{
|
|
// There exists no parent to resolve relative width or height.
|
|
// Use child size as fallback and expand to aspect ratio given
|
|
// by the viewBox. No mapping.
|
|
// We get viewport >= content, therefore no clipping.
|
|
bNeedsMapping = false;
|
|
|
|
const double fChildWidth(pBox->getWidth());
|
|
const double fChildHeight(pBox->getHeight());
|
|
const double fLeft(pBox->getMinX());
|
|
const double fTop(pBox->getMinY());
|
|
double fW, fH;
|
|
if ( fChildWidth / fViewBoxWidth > fChildHeight / fViewBoxHeight )
|
|
{ // expand y
|
|
fW = fChildWidth;
|
|
fH = fChildWidth / fViewBoxRatio;
|
|
}
|
|
else
|
|
{ // expand x
|
|
fH = fChildHeight;
|
|
fW = fChildHeight * fViewBoxRatio;
|
|
}
|
|
aSvgCanvasRange = basegfx::B2DRange(fLeft, fTop, fLeft + fW, fTop + fH);
|
|
}
|
|
|
|
if (bNeedsMapping)
|
|
{
|
|
// create mapping
|
|
// SVG 1.1 defines in section 5.1.2 that if the attribute preserveAspectRatio is not specified,
|
|
// then the effect is as if a value of 'xMidYMid meet' were specified.
|
|
SvgAspectRatio aRatioDefault(SvgAlign::xMidYMid, true);
|
|
const SvgAspectRatio& rRatio = getSvgAspectRatio().isSet()? getSvgAspectRatio() : aRatioDefault;
|
|
|
|
basegfx::B2DHomMatrix aViewBoxMapping = rRatio.createMapping(aSvgCanvasRange, *pBox);
|
|
// no need to check ratio here for slice, the outermost Svg will
|
|
// be clipped anyways (see below)
|
|
|
|
// scale content to viewBox definitions
|
|
const drawinglayer::primitive2d::Primitive2DReference xTransform(
|
|
new drawinglayer::primitive2d::TransformPrimitive2D(
|
|
aViewBoxMapping,
|
|
std::move(aSequence)));
|
|
|
|
aSequence = drawinglayer::primitive2d::Primitive2DContainer { xTransform };
|
|
}
|
|
}
|
|
}
|
|
else // no viewbox => no mapping
|
|
{
|
|
const bool bWidthIsAbsolute(getWidth().isSet() && SvgUnit::percent != getWidth().getUnit());
|
|
const bool bHeightIsAbsolute(getHeight().isSet() && SvgUnit::percent != getHeight().getUnit());
|
|
if (bWidthIsAbsolute && bHeightIsAbsolute)
|
|
{
|
|
double fW = getWidth().solveNonPercentage(*this);
|
|
double fH = getHeight().solveNonPercentage(*this);
|
|
aSvgCanvasRange = basegfx::B2DRange(0.0, 0.0, fW, fH);
|
|
}
|
|
else
|
|
{
|
|
// There exists no parent to resolve relative width or height.
|
|
// Use child size as fallback. We get viewport >= content, therefore no clipping.
|
|
const basegfx::B2DRange aChildRange(
|
|
aSequence.getB2DRange(
|
|
drawinglayer::geometry::ViewInformation2D()));
|
|
const double fChildWidth(aChildRange.getWidth());
|
|
const double fChildHeight(aChildRange.getHeight());
|
|
const double fChildLeft(aChildRange.getMinX());
|
|
const double fChildTop(aChildRange.getMinY());
|
|
double fW = bWidthIsAbsolute ? getWidth().solveNonPercentage(*this) : fChildWidth;
|
|
double fH = bHeightIsAbsolute ? getHeight().solveNonPercentage(*this) : fChildHeight;
|
|
const double fLeft(bWidthIsAbsolute ? 0.0 : fChildLeft);
|
|
const double fTop(bHeightIsAbsolute ? 0.0 : fChildTop);
|
|
aSvgCanvasRange = basegfx::B2DRange(fLeft, fTop, fLeft+fW, fTop+fH);
|
|
}
|
|
|
|
}
|
|
|
|
// to be completely correct in Svg sense it is necessary to clip
|
|
// the whole content to the given canvas. I choose here to do this
|
|
// initially despite I found various examples of Svg files out there
|
|
// which have no correct values for this clipping. It's correct
|
|
// due to the Svg spec.
|
|
|
|
// different from Svg we have the possibility with primitives to get
|
|
// a correct bounding box for the geometry. Get it for evtl. taking action
|
|
const basegfx::B2DRange aContentRange(
|
|
aSequence.getB2DRange(
|
|
drawinglayer::geometry::ViewInformation2D()));
|
|
|
|
if(aSvgCanvasRange.isInside(aContentRange))
|
|
{
|
|
// no clip needed, but an invisible HiddenGeometryPrimitive2D
|
|
// to allow getting the full Svg range using the primitive mechanisms.
|
|
// This is needed since e.g. an SdrObject using this as graphic will
|
|
// create a mapping transformation to exactly map the content to its
|
|
// real life size
|
|
const drawinglayer::primitive2d::Primitive2DReference xLine(
|
|
new drawinglayer::primitive2d::PolygonHairlinePrimitive2D(
|
|
basegfx::utils::createPolygonFromRect(
|
|
aSvgCanvasRange),
|
|
basegfx::BColor(0.0, 0.0, 0.0)));
|
|
const drawinglayer::primitive2d::Primitive2DReference xHidden(
|
|
new drawinglayer::primitive2d::HiddenGeometryPrimitive2D(
|
|
drawinglayer::primitive2d::Primitive2DContainer { xLine }));
|
|
|
|
aSequence.push_back(xHidden);
|
|
}
|
|
else if(aSvgCanvasRange.overlaps(aContentRange))
|
|
{
|
|
// Clip is necessary. This will make Svg images evtl. smaller
|
|
// than wanted from Svg (the free space which may be around it is
|
|
// conform to the Svg spec), but avoids an expensive and unnecessary
|
|
// clip. Keep the full Svg range here to get the correct mappings
|
|
// to objects using this. Optimizations can be done in the processors
|
|
const drawinglayer::primitive2d::Primitive2DReference xMask(
|
|
new drawinglayer::primitive2d::MaskPrimitive2D(
|
|
basegfx::B2DPolyPolygon(
|
|
basegfx::utils::createPolygonFromRect(
|
|
aSvgCanvasRange)),
|
|
std::move(aSequence)));
|
|
|
|
aSequence = drawinglayer::primitive2d::Primitive2DContainer { xMask };
|
|
}
|
|
else
|
|
{
|
|
// not inside, no overlap. Empty Svg
|
|
aSequence.clear();
|
|
}
|
|
|
|
if(!aSequence.empty())
|
|
{
|
|
// Another correction:
|
|
// If no Width/Height is set (usually done in
|
|
// <svg ... width="215.9mm" height="279.4mm" >) which
|
|
// is the case for own-Impress-exports, assume that
|
|
// the Units are already 100ThMM.
|
|
// Maybe only for own-Impress-exports, thus may need to be
|
|
// &&ed with getDocument().findSvgNodeById("ooo:meta_slides"),
|
|
// but does not need to be.
|
|
bool bEmbedInFinalTransformPxTo100ThMM(true);
|
|
|
|
if(getDocument().findSvgNodeById(u"ooo:meta_slides"_ustr)
|
|
&& !getWidth().isSet()
|
|
&& !getHeight().isSet())
|
|
{
|
|
bEmbedInFinalTransformPxTo100ThMM = false;
|
|
}
|
|
|
|
if(bEmbedInFinalTransformPxTo100ThMM)
|
|
{
|
|
// embed in transform primitive to scale to 1/100th mm
|
|
// to get from Svg coordinates (px) to drawinglayer coordinates
|
|
constexpr double fScaleTo100thmm(o3tl::convert(1.0, o3tl::Length::px, o3tl::Length::mm100));
|
|
const basegfx::B2DHomMatrix aTransform(
|
|
basegfx::utils::createScaleB2DHomMatrix(
|
|
fScaleTo100thmm,
|
|
fScaleTo100thmm));
|
|
|
|
const drawinglayer::primitive2d::Primitive2DReference xTransform(
|
|
new drawinglayer::primitive2d::TransformPrimitive2D(
|
|
aTransform,
|
|
std::move(aSequence)));
|
|
|
|
aSequence = drawinglayer::primitive2d::Primitive2DContainer { xTransform };
|
|
}
|
|
|
|
// append to result
|
|
rTarget.append(aSequence);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if(!(aSequence.empty() && !getParent() && getViewBox()))
|
|
return;
|
|
|
|
// tdf#118232 No geometry, Outermost SVG element and we have a ViewBox.
|
|
// Create a HiddenGeometry Primitive containing an expanded
|
|
// hairline geometry to have the size contained
|
|
const drawinglayer::primitive2d::Primitive2DReference xLine(
|
|
new drawinglayer::primitive2d::PolygonHairlinePrimitive2D(
|
|
basegfx::utils::createPolygonFromRect(
|
|
*getViewBox()),
|
|
basegfx::BColor(0.0, 0.0, 0.0)));
|
|
const drawinglayer::primitive2d::Primitive2DReference xHidden(
|
|
new drawinglayer::primitive2d::HiddenGeometryPrimitive2D(
|
|
drawinglayer::primitive2d::Primitive2DContainer { xLine }));
|
|
|
|
rTarget.push_back(xHidden);
|
|
}
|
|
|
|
basegfx::B2DRange SvgSvgNode::getCurrentViewPort() const
|
|
{
|
|
if(getViewBox())
|
|
{
|
|
return *(getViewBox());
|
|
}
|
|
else // viewport should be given by x, y, width, and height
|
|
{
|
|
// Extract known viewport data
|
|
// bXXXIsAbsolute tracks whether relative values could be resolved to absolute values
|
|
if (getParent())
|
|
{
|
|
// If width or height is not provided, the default 100% is used, see SVG 1.1 section 5.1.2
|
|
// value 0.0 here is only to initialize variable
|
|
bool bWidthIsAbsolute(getWidth().isSet() && SvgUnit::percent != getWidth().getUnit());
|
|
double fW( bWidthIsAbsolute ? getWidth().solveNonPercentage(*this) : 0.0);
|
|
bool bHeightIsAbsolute(getHeight().isSet() && SvgUnit::percent != getHeight().getUnit());
|
|
double fH( bHeightIsAbsolute ? getHeight().solveNonPercentage(*this) : 0.0);
|
|
|
|
// If x or y not provided, then default 0.0 is used, see SVG 1.1 Section 5.1.2
|
|
bool bXIsAbsolute((getX().isSet() && SvgUnit::percent != getX().getUnit()) || !getX().isSet());
|
|
double fX( bXIsAbsolute && getX().isSet() ? getX().solveNonPercentage(*this) : 0.0);
|
|
|
|
bool bYIsAbsolute((getY().isSet() && SvgUnit::percent != getY().getUnit()) || !getY().isSet());
|
|
double fY( bYIsAbsolute && getY().isSet() ? getY().solveNonPercentage(*this) : 0.0);
|
|
|
|
if (bXIsAbsolute && bYIsAbsolute && bWidthIsAbsolute && bHeightIsAbsolute)
|
|
{
|
|
return basegfx::B2DRange(fX, fY, fX+fW, fY+fH);
|
|
}
|
|
else // try to resolve relative values
|
|
{
|
|
if (!bXIsAbsolute || !bWidthIsAbsolute)
|
|
{
|
|
// get width of enclosing svg and resolve percentage in x and width
|
|
double fWReference(0.0);
|
|
bool bHasFoundWidth(false);
|
|
seekReferenceWidth(fWReference, bHasFoundWidth);
|
|
// referenced values are already in 'user unit'
|
|
if (!bXIsAbsolute && bHasFoundWidth)
|
|
{
|
|
fX = getX().getNumber() * 0.01 * fWReference;
|
|
bXIsAbsolute = true;
|
|
}
|
|
if (!bWidthIsAbsolute && bHasFoundWidth)
|
|
{
|
|
fW = (getWidth().isSet() ? getWidth().getNumber() *0.01 : 1.0) * fWReference;
|
|
bWidthIsAbsolute = true;
|
|
}
|
|
}
|
|
if (!bYIsAbsolute || !bHeightIsAbsolute)
|
|
{
|
|
// get height of enclosing svg and resolve percentage in y and height
|
|
double fHReference(0.0);
|
|
bool bHasFoundHeight(false);
|
|
seekReferenceHeight(fHReference, bHasFoundHeight);
|
|
// referenced values are already in 'user unit'
|
|
if (!bYIsAbsolute && bHasFoundHeight)
|
|
{
|
|
fY = getY().getNumber() * 0.01 * fHReference;
|
|
bYIsAbsolute = true;
|
|
}
|
|
if (!bHeightIsAbsolute && bHasFoundHeight)
|
|
{
|
|
fH = (getHeight().isSet() ? getHeight().getNumber() *0.01 : 1.0) * fHReference;
|
|
bHeightIsAbsolute = true;
|
|
}
|
|
}
|
|
|
|
if (bXIsAbsolute && bYIsAbsolute && bWidthIsAbsolute && bHeightIsAbsolute)
|
|
{
|
|
return basegfx::B2DRange(fX, fY, fX+fW, fY+fH);
|
|
}
|
|
else // relative values could not be resolved, there exists no fallback
|
|
{
|
|
return SvgNode::getCurrentViewPort();
|
|
}
|
|
}
|
|
}
|
|
else //outermost svg
|
|
{
|
|
// If width or height is not provided, the default would be 100%, see SVG 1.1 section 5.1.2
|
|
// But here it cannot be resolved and no fallback exists.
|
|
// SVG 1.1 defines in section 5.1.2 that x,y has no meaning for the outermost SVG element.
|
|
bool bWidthIsAbsolute(getWidth().isSet() && SvgUnit::percent != getWidth().getUnit());
|
|
bool bHeightIsAbsolute(getHeight().isSet() && SvgUnit::percent != getHeight().getUnit());
|
|
if (bWidthIsAbsolute && bHeightIsAbsolute)
|
|
{
|
|
double fW( getWidth().solveNonPercentage(*this) );
|
|
double fH( getHeight().solveNonPercentage(*this) );
|
|
return basegfx::B2DRange(0.0, 0.0, fW, fH);
|
|
}
|
|
else // no fallback exists
|
|
{
|
|
return SvgNode::getCurrentViewPort();
|
|
}
|
|
}
|
|
// TODO: Is it possible to decompose and use the bounding box of the children, if even the
|
|
// outermost svg has no information to resolve percentage? Is it worth, how expensive is it?
|
|
|
|
}
|
|
}
|
|
|
|
} // end of namespace svgio
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|