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/* -*- 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 <drawinglayer/primitive2d/pagepreviewprimitive2d.hxx>
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
#include <drawinglayer/primitive2d/maskprimitive2d.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
using namespace com::sun::star;
namespace drawinglayer::primitive2d
{
void PagePreviewPrimitive2D::create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& rViewInformation) const
{
Primitive2DContainer aContent(getPageContent());
if(!(!aContent.empty()
&& basegfx::fTools::more(getContentWidth(), 0.0)
&& basegfx::fTools::more(getContentHeight(), 0.0)))
return;
// the decomposed matrix will be needed
basegfx::B2DVector aScale, aTranslate;
double fRotate, fShearX;
getTransform().decompose(aScale, aTranslate, fRotate, fShearX);
if(!(basegfx::fTools::more(aScale.getX(), 0.0) && basegfx::fTools::more(aScale.getY(), 0.0)))
return;
// check if content overlaps with target size and needs to be embedded with a
// clipping primitive
const basegfx::B2DRange aRealContentRange(aContent.getB2DRange(rViewInformation));
const basegfx::B2DRange aAllowedContentRange(0.0, 0.0, getContentWidth(), getContentHeight());
if(!aAllowedContentRange.isInside(aRealContentRange))
{
const Primitive2DReference xReferenceA(
new MaskPrimitive2D(
basegfx::B2DPolyPolygon(
basegfx::utils::createPolygonFromRect(aAllowedContentRange)), std::move(aContent)));
aContent = Primitive2DContainer { xReferenceA };
}
// create a mapping from content to object.
basegfx::B2DHomMatrix aPageTrans;
// #i101075# when keeping the aspect ratio is wanted, it is necessary to calculate
// an equidistant scaling in X and Y and a corresponding translation to
// center the output. Calculate needed scale factors
const double fScaleX(aScale.getX() / getContentWidth());
const double fScaleY(aScale.getY() / getContentHeight());
// to keep the aspect, use the smaller scale and adapt missing size by translation
if(fScaleX < fScaleY)
{
// height needs to be adapted
const double fNeededHeight(aScale.getY() / fScaleX);
const double fSpaceToAdd(fNeededHeight - getContentHeight());
aPageTrans.translate(0.0, fSpaceToAdd * 0.5);
aPageTrans.scale(fScaleX, aScale.getY() / fNeededHeight);
}
else
{
// width needs to be adapted
const double fNeededWidth(aScale.getX() / fScaleY);
const double fSpaceToAdd(fNeededWidth - getContentWidth());
aPageTrans.translate(fSpaceToAdd * 0.5, 0.0);
aPageTrans.scale(aScale.getX() / fNeededWidth, fScaleY);
}
// add the missing object transformation aspects
const basegfx::B2DHomMatrix aCombined(basegfx::utils::createShearXRotateTranslateB2DHomMatrix(
fShearX, fRotate, aTranslate.getX(), aTranslate.getY()));
aPageTrans = aCombined * aPageTrans;
// embed in necessary transformation to map from SdrPage to SdrPageObject
rContainer.push_back(new TransformPrimitive2D(aPageTrans, std::move(aContent)));
}
PagePreviewPrimitive2D::PagePreviewPrimitive2D(
const css::uno::Reference< css::drawing::XDrawPage >& rxDrawPage,
const basegfx::B2DHomMatrix& rTransform,
double fContentWidth,
double fContentHeight,
Primitive2DContainer&& rPageContent)
: mxDrawPage(rxDrawPage),
maPageContent(std::move(rPageContent)),
maTransform(rTransform),
mfContentWidth(fContentWidth),
mfContentHeight(fContentHeight)
{
}
bool PagePreviewPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
{
if(BasePrimitive2D::operator==(rPrimitive))
{
const PagePreviewPrimitive2D& rCompare = static_cast< const PagePreviewPrimitive2D& >(rPrimitive);
return (getXDrawPage() == rCompare.getXDrawPage()
&& getPageContent() == rCompare.getPageContent()
&& getTransform() == rCompare.getTransform()
&& getContentWidth() == rCompare.getContentWidth()
&& getContentHeight() == rCompare.getContentHeight());
}
return false;
}
basegfx::B2DRange PagePreviewPrimitive2D::getB2DRange(const geometry::ViewInformation2D& /*rViewInformation`*/) const
{
// nothing is allowed to stick out of a PagePreviewPrimitive, thus we
// can quickly deliver our range here
basegfx::B2DRange aRetval(0.0, 0.0, 1.0, 1.0);
aRetval.transform(getTransform());
return aRetval;
}
// provide unique ID
sal_uInt32 PagePreviewPrimitive2D::getPrimitive2DID() const
{
return PRIMITIVE2D_ID_PAGEPREVIEWPRIMITIVE2D;
}
} // end of namespace
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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