174 lines
7.9 KiB
C++
174 lines
7.9 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/pagepreviewprimitive2d.hxx>
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#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
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#include <drawinglayer/primitive2d/maskprimitive2d.hxx>
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#include <basegfx/polygon/b2dpolygontools.hxx>
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#include <basegfx/polygon/b2dpolygon.hxx>
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#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
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#include <basegfx/matrix/b2dhommatrixtools.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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Primitive2DSequence PagePreviewPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
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{
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Primitive2DSequence xRetval;
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Primitive2DSequence aContent(getPageContent());
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if(aContent.hasElements()
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&& basegfx::fTools::more(getContentWidth(), 0.0)
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&& basegfx::fTools::more(getContentHeight(), 0.0))
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{
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// the decomposed matrix will be needed
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basegfx::B2DVector aScale, aTranslate;
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double fRotate, fShearX;
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getTransform().decompose(aScale, aTranslate, fRotate, fShearX);
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if(basegfx::fTools::more(aScale.getX(), 0.0) && basegfx::fTools::more(aScale.getY(), 0.0))
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{
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// check if content overlaps with tageted size and needs to be embedded with a
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// clipping primitive
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const basegfx::B2DRange aRealContentRange(getB2DRangeFromPrimitive2DSequence(aContent, rViewInformation));
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const basegfx::B2DRange aAllowedContentRange(0.0, 0.0, getContentWidth(), getContentHeight());
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if(!aAllowedContentRange.isInside(aRealContentRange))
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{
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const Primitive2DReference xReferenceA(
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new MaskPrimitive2D(
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basegfx::B2DPolyPolygon(
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basegfx::tools::createPolygonFromRect(aAllowedContentRange)), aContent));
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aContent = Primitive2DSequence(&xReferenceA, 1);
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}
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// create a mapping from content to object.
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basegfx::B2DHomMatrix aPageTrans;
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if(getKeepAspectRatio())
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{
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// #i101075# when keeping the aspect ratio is wanted, it is necessary to calculate
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// an equidistant scaling in X and Y and a corresponding translation to
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// center the output. Calculate needed scale factors
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const double fScaleX(aScale.getX() / getContentWidth());
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const double fScaleY(aScale.getY() / getContentHeight());
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// to keep the aspect, use the smaller scale and adapt missing size by translation
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if(fScaleX < fScaleY)
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{
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// height needs to be adapted
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const double fNeededHeight(aScale.getY() / fScaleX);
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const double fSpaceToAdd(fNeededHeight - getContentHeight());
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aPageTrans.translate(0.0, fSpaceToAdd * 0.5);
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aPageTrans.scale(fScaleX, aScale.getY() / fNeededHeight);
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}
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else
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{
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// width needs to be adapted
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const double fNeededWidth(aScale.getX() / fScaleY);
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const double fSpaceToAdd(fNeededWidth - getContentWidth());
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aPageTrans.translate(fSpaceToAdd * 0.5, 0.0);
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aPageTrans.scale(aScale.getX() / fNeededWidth, fScaleY);
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}
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// add the missing object transformation aspects
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const basegfx::B2DHomMatrix aCombined(basegfx::tools::createShearXRotateTranslateB2DHomMatrix(
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fShearX, fRotate, aTranslate.getX(), aTranslate.getY()));
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aPageTrans = aCombined * aPageTrans;
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}
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else
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{
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// completely scale to PageObject size. Scale to unit size.
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aPageTrans.scale(1.0/ getContentWidth(), 1.0 / getContentHeight());
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// apply object matrix
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aPageTrans *= getTransform();
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}
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// embed in necessary transformation to map from SdrPage to SdrPageObject
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const Primitive2DReference xReferenceB(new TransformPrimitive2D(aPageTrans, aContent));
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xRetval = Primitive2DSequence(&xReferenceB, 1);
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}
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}
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return xRetval;
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}
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PagePreviewPrimitive2D::PagePreviewPrimitive2D(
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const ::com::sun::star::uno::Reference< ::com::sun::star::drawing::XDrawPage >& rxDrawPage,
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const basegfx::B2DHomMatrix& rTransform,
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double fContentWidth,
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double fContentHeight,
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const Primitive2DSequence& rPageContent,
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bool bKeepAspectRatio)
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: BufferedDecompositionPrimitive2D(),
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mxDrawPage(rxDrawPage),
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maPageContent(rPageContent),
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maTransform(rTransform),
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mfContentWidth(fContentWidth),
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mfContentHeight(fContentHeight),
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mbKeepAspectRatio(bKeepAspectRatio)
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{
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}
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bool PagePreviewPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
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{
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if(BasePrimitive2D::operator==(rPrimitive))
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{
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const PagePreviewPrimitive2D& rCompare = static_cast< const PagePreviewPrimitive2D& >(rPrimitive);
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return (getXDrawPage() == rCompare.getXDrawPage()
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&& getPageContent() == rCompare.getPageContent()
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&& getTransform() == rCompare.getTransform()
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&& getContentWidth() == rCompare.getContentWidth()
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&& getContentHeight() == rCompare.getContentHeight()
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&& getKeepAspectRatio() == rCompare.getKeepAspectRatio());
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}
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return false;
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}
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basegfx::B2DRange PagePreviewPrimitive2D::getB2DRange(const geometry::ViewInformation2D& /*rViewInformation`*/) const
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{
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// nothing is allowed to stick out of a PagePreviewPrimitive, thus we
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// can quickly deliver our range here
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basegfx::B2DRange aRetval(0.0, 0.0, 1.0, 1.0);
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aRetval.transform(getTransform());
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return aRetval;
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}
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// provide unique ID
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ImplPrimitrive2DIDBlock(PagePreviewPrimitive2D, PRIMITIVE2D_ID_PAGEPREVIEWPRIMITIVE2D)
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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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