Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 155 insertions, 0 deletions

diff --git a/drawinglayer/source/primitive2d/cropprimitive2d.cxx b/drawinglayer/source/primitive2d/cropprimitive2d.cxx
new file mode 100644
index 000000000..76393ad05
--- /dev/null
+++ b/drawinglayer/source/primitive2d/cropprimitive2d.cxx
@@ -0,0 +1,155 @@
+/* -*- 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 <primitive2d/cropprimitive2d.hxx>
+#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/matrix/b2dhommatrixtools.hxx>
+#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <drawinglayer/primitive2d/maskprimitive2d.hxx>
+
+
+using namespace com::sun::star;
+
+
+namespace drawinglayer::primitive2d
+{
+        CropPrimitive2D::CropPrimitive2D(
+            Primitive2DContainer&& aChildren,
+            const basegfx::B2DHomMatrix& rTransformation,
+            double fCropLeft,
+            double fCropTop,
+            double fCropRight,
+            double fCropBottom)
+        :   GroupPrimitive2D(std::move(aChildren)),
+            maTransformation(rTransformation),
+            mfCropLeft(fCropLeft),
+            mfCropTop(fCropTop),
+            mfCropRight(fCropRight),
+            mfCropBottom(fCropBottom)
+        {
+        }
+
+        bool CropPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
+        {
+            if(GroupPrimitive2D::operator==(rPrimitive))
+            {
+                const CropPrimitive2D& rCompare = static_cast< const CropPrimitive2D& >(rPrimitive);
+
+                return (getTransformation() == rCompare.getTransformation()
+                    && getCropLeft() == rCompare.getCropLeft()
+                    && getCropTop() == rCompare.getCropTop()
+                    && getCropRight() == rCompare.getCropRight()
+                    && getCropBottom() == rCompare.getCropBottom());
+            }
+
+            return false;
+        }
+
+        void CropPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& /*rViewInformation*/) const
+        {
+            if(getChildren().empty())
+                return;
+
+            // get original object scale in unit coordinates (no mirroring)
+            const basegfx::B2DVector aObjectScale(basegfx::absolute(getTransformation() * basegfx::B2DVector(1.0, 1.0)));
+
+            // we handle cropping, so when no width or no height, content will be empty,
+            // so only do something when we have a width and a height
+            if(aObjectScale.equalZero())
+                return;
+
+            // calculate crop distances in unit coordinates. They are already combined with CropScaleFactor, thus
+            // are relative only to object scale
+            const double fBackScaleX(basegfx::fTools::equalZero(aObjectScale.getX()) ? 1.0 : 1.0 / fabs(aObjectScale.getX()));
+            const double fBackScaleY(basegfx::fTools::equalZero(aObjectScale.getY()) ? 1.0 : 1.0 / fabs(aObjectScale.getY()));
+            const double fLeft(getCropLeft() * fBackScaleX);
+            const double fTop(getCropTop() * fBackScaleY);
+            const double fRight(getCropRight() * fBackScaleX);
+            const double fBottom(getCropBottom() * fBackScaleY);
+
+            // calc new unit range for comparisons; the original range is the unit range
+            const basegfx::B2DRange aUnitRange(0.0, 0.0, 1.0, 1.0);
+            const basegfx::B2DRange aNewRange(
+                -fLeft,
+                -fTop,
+                1.0 + fRight,
+                1.0 + fBottom);
+
+            // if we have no overlap the crop has removed everything, so we do only
+            // have to create content if this is not the case
+            if(!aNewRange.overlaps(aUnitRange))
+                return;
+
+            // create new transform; first take out old transform to get
+            // to unit coordinates by inverting. Inverting should be flawless
+            // since we already checked that object size is not zero in X or Y
+            basegfx::B2DHomMatrix aNewTransform(getTransformation());
+
+            aNewTransform.invert();
+
+            // apply crop enlargement in unit coordinates
+            aNewTransform = basegfx::utils::createScaleTranslateB2DHomMatrix(
+                aNewRange.getRange(),
+                aNewRange.getMinimum()) * aNewTransform;
+
+            // apply original transformation. Since we have manipulated the crop
+            // in unit coordinates we do not need to care about mirroring or
+            // a corrected point for a possible shear or rotation, this all comes for
+            // free
+            aNewTransform = getTransformation() * aNewTransform;
+
+            // prepare TransformPrimitive2D with xPrimitive
+            const Primitive2DReference xTransformPrimitive(
+                new TransformPrimitive2D(
+                    aNewTransform,
+                    Primitive2DContainer(getChildren())));
+
+            if(aUnitRange.isInside(aNewRange))
+            {
+                // the new range is completely inside the old range (unit range),
+                // so no masking is needed
+                rVisitor.visit(xTransformPrimitive);
+            }
+            else
+            {
+                // mask with original object's bounds
+                basegfx::B2DPolyPolygon aMaskPolyPolygon(basegfx::utils::createUnitPolygon());
+                aMaskPolyPolygon.transform(getTransformation());
+
+                // create maskPrimitive with aMaskPolyPolygon and aMaskContentVector
+                const Primitive2DReference xMask(
+                    new MaskPrimitive2D(
+                        aMaskPolyPolygon,
+                        Primitive2DContainer { xTransformPrimitive }));
+
+                rVisitor.visit(xMask);
+            }
+        }
+
+        // provide unique ID
+        sal_uInt32 CropPrimitive2D::getPrimitive2DID() const
+        {
+            return PRIMITIVE2D_ID_CROPPRIMITIVE2D;
+        }
+
+} // end of namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */