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| -rw-r--r-- | drawinglayer/source/primitive2d/pagepreviewprimitive2d.cxx | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/drawinglayer/source/primitive2d/pagepreviewprimitive2d.cxx b/drawinglayer/source/primitive2d/pagepreviewprimitive2d.cxx new file mode 100644 index 000000000..b7c67bf8f --- /dev/null +++ b/drawinglayer/source/primitive2d/pagepreviewprimitive2d.cxx @@ -0,0 +1,148 @@ +/* -*- 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)), 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, aContent)); + } + + PagePreviewPrimitive2D::PagePreviewPrimitive2D( + const css::uno::Reference< css::drawing::XDrawPage >& rxDrawPage, + const basegfx::B2DHomMatrix& rTransform, + double fContentWidth, + double fContentHeight, + const Primitive2DContainer& rPageContent) + : BufferedDecompositionPrimitive2D(), + mxDrawPage(rxDrawPage), + maPageContent(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 + ImplPrimitive2DIDBlock(PagePreviewPrimitive2D, PRIMITIVE2D_ID_PAGEPREVIEWPRIMITIVE2D) + +} // end of namespace + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |