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, 457 insertions, 0 deletions

diff --git a/basegfx/source/matrix/b2dhommatrixtools.cxx b/basegfx/source/matrix/b2dhommatrixtools.cxx
new file mode 100644
index 000000000..7fb6bbe0c
--- /dev/null
+++ b/basegfx/source/matrix/b2dhommatrixtools.cxx
@@ -0,0 +1,457 @@
+/* -*- 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 <basegfx/matrix/b2dhommatrixtools.hxx>
+#include <basegfx/range/b2drange.hxx>
+
+#include <osl/diagnose.h>
+
+namespace basegfx::utils
+{
+        void createSinCosOrthogonal(double& o_rSin, double& o_rCos, double fRadiant)
+        {
+            if( fTools::equalZero( fmod( fRadiant, M_PI_2 ) ) )
+            {
+                // determine quadrant
+                const sal_Int32 nQuad(
+                    (4 + fround( M_2_PI*fmod( fRadiant, 2 * M_PI ) )) % 4 );
+                switch( nQuad )
+                {
+                    case 0: // -2pi,0,2pi
+                        o_rSin = 0.0;
+                        o_rCos = 1.0;
+                        break;
+
+                    case 1: // -3/2pi,1/2pi
+                        o_rSin = 1.0;
+                        o_rCos = 0.0;
+                        break;
+
+                    case 2: // -pi,pi
+                        o_rSin = 0.0;
+                        o_rCos = -1.0;
+                        break;
+
+                    case 3: // -1/2pi,3/2pi
+                        o_rSin = -1.0;
+                        o_rCos = 0.0;
+                        break;
+
+                    default:
+                        OSL_FAIL( "createSinCos: Impossible case reached" );
+                }
+            }
+            else
+            {
+                // TODO(P1): Maybe use glibc's sincos here (though
+                // that's kinda non-portable...)
+                o_rSin = sin(fRadiant);
+                o_rCos = cos(fRadiant);
+            }
+        }
+
+        B2DHomMatrix createScaleB2DHomMatrix(double fScaleX, double fScaleY)
+        {
+            B2DHomMatrix aRetval;
+            const double fOne(1.0);
+
+            if(!fTools::equal(fScaleX, fOne))
+            {
+                aRetval.set(0, 0, fScaleX);
+            }
+
+            if(!fTools::equal(fScaleY, fOne))
+            {
+                aRetval.set(1, 1, fScaleY);
+            }
+
+            return aRetval;
+        }
+
+        B2DHomMatrix createShearXB2DHomMatrix(double fShearX)
+        {
+            B2DHomMatrix aRetval;
+
+            if(!fTools::equalZero(fShearX))
+            {
+                aRetval.set(0, 1, fShearX);
+            }
+
+            return aRetval;
+        }
+
+        B2DHomMatrix createShearYB2DHomMatrix(double fShearY)
+        {
+            B2DHomMatrix aRetval;
+
+            if(!fTools::equalZero(fShearY))
+            {
+                aRetval.set(1, 0, fShearY);
+            }
+
+            return aRetval;
+        }
+
+        B2DHomMatrix createRotateB2DHomMatrix(double fRadiant)
+        {
+            B2DHomMatrix aRetval;
+
+            if(!fTools::equalZero(fRadiant))
+            {
+                double fSin(0.0);
+                double fCos(1.0);
+
+                createSinCosOrthogonal(fSin, fCos, fRadiant);
+                aRetval.set(0, 0, fCos);
+                aRetval.set(1, 1, fCos);
+                aRetval.set(1, 0, fSin);
+                aRetval.set(0, 1, -fSin);
+            }
+
+            return aRetval;
+        }
+
+        B2DHomMatrix createTranslateB2DHomMatrix(double fTranslateX, double fTranslateY)
+        {
+            B2DHomMatrix aRetval;
+
+            if(!(fTools::equalZero(fTranslateX) && fTools::equalZero(fTranslateY)))
+            {
+                aRetval.set(0, 2, fTranslateX);
+                aRetval.set(1, 2, fTranslateY);
+            }
+
+            return aRetval;
+        }
+
+        B2DHomMatrix createScaleShearXRotateTranslateB2DHomMatrix(
+            double fScaleX, double fScaleY,
+            double fShearX,
+            double fRadiant,
+            double fTranslateX, double fTranslateY)
+        {
+            const double fOne(1.0);
+
+            if(fTools::equal(fScaleX, fOne) && fTools::equal(fScaleY, fOne))
+            {
+                /// no scale, take shortcut
+                return createShearXRotateTranslateB2DHomMatrix(fShearX, fRadiant, fTranslateX, fTranslateY);
+            }
+            else
+            {
+                /// scale used
+                if(fTools::equalZero(fShearX))
+                {
+                    /// no shear
+                    if(fTools::equalZero(fRadiant))
+                    {
+                        /// no rotate, take shortcut
+                        return createScaleTranslateB2DHomMatrix(fScaleX, fScaleY, fTranslateX, fTranslateY);
+                    }
+                    else
+                    {
+                        /// rotate and scale used, no shear
+                        double fSin(0.0);
+                        double fCos(1.0);
+
+                        createSinCosOrthogonal(fSin, fCos, fRadiant);
+
+                        B2DHomMatrix aRetval(
+                            /* Row 0, Column 0 */ fCos * fScaleX,
+                            /* Row 0, Column 1 */ fScaleY * -fSin,
+                            /* Row 0, Column 2 */ fTranslateX,
+                            /* Row 1, Column 0 */ fSin * fScaleX,
+                            /* Row 1, Column 1 */ fScaleY * fCos,
+                            /* Row 1, Column 2 */ fTranslateY);
+
+                        return aRetval;
+                    }
+                }
+                else
+                {
+                    /// scale and shear used
+                    if(fTools::equalZero(fRadiant))
+                    {
+                        /// scale and shear, but no rotate
+                        B2DHomMatrix aRetval(
+                            /* Row 0, Column 0 */ fScaleX,
+                            /* Row 0, Column 1 */ fScaleY * fShearX,
+                            /* Row 0, Column 2 */ fTranslateX,
+                            /* Row 1, Column 0 */ 0.0,
+                            /* Row 1, Column 1 */ fScaleY,
+                            /* Row 1, Column 2 */ fTranslateY);
+
+                        return aRetval;
+                    }
+                    else
+                    {
+                        /// scale, shear and rotate used
+                        double fSin(0.0);
+                        double fCos(1.0);
+
+                        createSinCosOrthogonal(fSin, fCos, fRadiant);
+
+                        B2DHomMatrix aRetval(
+                            /* Row 0, Column 0 */ fCos * fScaleX,
+                            /* Row 0, Column 1 */ fScaleY * ((fCos * fShearX) - fSin),
+                            /* Row 0, Column 2 */ fTranslateX,
+                            /* Row 1, Column 0 */ fSin * fScaleX,
+                            /* Row 1, Column 1 */ fScaleY * ((fSin * fShearX) + fCos),
+                            /* Row 1, Column 2 */ fTranslateY);
+
+                        return aRetval;
+                    }
+                }
+            }
+        }
+
+        B2DHomMatrix createShearXRotateTranslateB2DHomMatrix(
+            double fShearX,
+            double fRadiant,
+            double fTranslateX, double fTranslateY)
+        {
+            if(fTools::equalZero(fShearX))
+            {
+                /// no shear
+                if(fTools::equalZero(fRadiant))
+                {
+                    /// no shear, no rotate, take shortcut
+                    return createTranslateB2DHomMatrix(fTranslateX, fTranslateY);
+                }
+                else
+                {
+                    /// no shear, but rotate used
+                    double fSin(0.0);
+                    double fCos(1.0);
+
+                    createSinCosOrthogonal(fSin, fCos, fRadiant);
+
+                    B2DHomMatrix aRetval(
+                        /* Row 0, Column 0 */ fCos,
+                        /* Row 0, Column 1 */ -fSin,
+                        /* Row 0, Column 2 */ fTranslateX,
+                        /* Row 1, Column 0 */ fSin,
+                        /* Row 1, Column 1 */ fCos,
+                        /* Row 1, Column 2 */ fTranslateY);
+
+                    return aRetval;
+                }
+            }
+            else
+            {
+                /// shear used
+                if(fTools::equalZero(fRadiant))
+                {
+                    /// no rotate, but shear used
+                    B2DHomMatrix aRetval(
+                        /* Row 0, Column 0 */ 1.0,
+                        /* Row 0, Column 1 */ fShearX,
+                        /* Row 0, Column 2 */ fTranslateX,
+                        /* Row 1, Column 0 */ 0.0,
+                        /* Row 1, Column 1 */ 1.0,
+                        /* Row 1, Column 2 */ fTranslateY);
+
+                    return aRetval;
+                }
+                else
+                {
+                    /// shear and rotate used
+                    double fSin(0.0);
+                    double fCos(1.0);
+
+                    createSinCosOrthogonal(fSin, fCos, fRadiant);
+
+                    B2DHomMatrix aRetval(
+                        /* Row 0, Column 0 */ fCos,
+                        /* Row 0, Column 1 */ (fCos * fShearX) - fSin,
+                        /* Row 0, Column 2 */ fTranslateX,
+                        /* Row 1, Column 0 */ fSin,
+                        /* Row 1, Column 1 */ (fSin * fShearX) + fCos,
+                        /* Row 1, Column 2 */ fTranslateY);
+
+                    return aRetval;
+                }
+            }
+        }
+
+        B2DHomMatrix createScaleTranslateB2DHomMatrix(
+            double fScaleX, double fScaleY,
+            double fTranslateX, double fTranslateY)
+        {
+            const double fOne(1.0);
+
+            if(fTools::equal(fScaleX, fOne) && fTools::equal(fScaleY, fOne))
+            {
+                /// no scale, take shortcut
+                return createTranslateB2DHomMatrix(fTranslateX, fTranslateY);
+            }
+            else
+            {
+                /// scale used
+                if(fTools::equalZero(fTranslateX) && fTools::equalZero(fTranslateY))
+                {
+                    /// no translate, but scale.
+                    B2DHomMatrix aRetval;
+
+                    aRetval.set(0, 0, fScaleX);
+                    aRetval.set(1, 1, fScaleY);
+
+                    return aRetval;
+                }
+                else
+                {
+                    /// translate and scale
+                    B2DHomMatrix aRetval(
+                        /* Row 0, Column 0 */ fScaleX,
+                        /* Row 0, Column 1 */ 0.0,
+                        /* Row 0, Column 2 */ fTranslateX,
+                        /* Row 1, Column 0 */ 0.0,
+                        /* Row 1, Column 1 */ fScaleY,
+                        /* Row 1, Column 2 */ fTranslateY);
+
+                    return aRetval;
+                }
+            }
+        }
+
+        B2DHomMatrix createRotateAroundPoint(
+            double fPointX, double fPointY,
+            double fRadiant)
+        {
+            B2DHomMatrix aRetval;
+
+            if(!fTools::equalZero(fRadiant))
+            {
+                double fSin(0.0);
+                double fCos(1.0);
+
+                createSinCosOrthogonal(fSin, fCos, fRadiant);
+
+                aRetval.set3x2(
+                    /* Row 0, Column 0 */ fCos,
+                    /* Row 0, Column 1 */ -fSin,
+                    /* Row 0, Column 2 */ (fPointX * (1.0 - fCos)) + (fSin * fPointY),
+                    /* Row 1, Column 0 */ fSin,
+                    /* Row 1, Column 1 */ fCos,
+                    /* Row 1, Column 2 */ (fPointY * (1.0 - fCos)) - (fSin * fPointX));
+            }
+
+            return aRetval;
+        }
+
+        B2DHomMatrix createRotateAroundCenterKeepAspectRatioStayInsideRange(
+            const basegfx::B2DRange& rTargetRange,
+            double fRotate)
+        {
+            basegfx::B2DHomMatrix aRetval;
+
+            // RotGrfFlyFrame: Create a transformation that maps the range inside of itself
+            // so that it fits, takes as much space as possible and keeps the aspect ratio
+            if(0.0 != fRotate)
+            {
+                // Fit rotated graphic to center of available space, keeping page ratio:
+                // Adapt scaling ratio of unit object and rotate it
+                aRetval.scale(1.0, rTargetRange.getHeight() / rTargetRange.getWidth());
+                aRetval.rotate(fRotate);
+
+                // get the range to see where we are in unit coordinates
+                basegfx::B2DRange aFullRange(0.0, 0.0, 1.0, 1.0);
+                aFullRange.transform(aRetval);
+
+                // detect needed scales in X/Y and choose the smallest for staying inside the
+                // available space while keeping aspect ratio of the source
+                const double fScaleX(rTargetRange.getWidth() / aFullRange.getWidth());
+                const double fScaleY(rTargetRange.getHeight() / aFullRange.getHeight());
+                const double fScaleMin(std::min(fScaleX, fScaleY));
+
+                // TopLeft to zero, then scale, then move to center of available space
+                aRetval.translate(-aFullRange.getMinX(), -aFullRange.getMinY());
+                aRetval.scale(fScaleMin, fScaleMin);
+                aRetval.translate(
+                    rTargetRange.getCenterX() - (0.5 * fScaleMin * aFullRange.getWidth()),
+                    rTargetRange.getCenterY() - (0.5 * fScaleMin * aFullRange.getHeight()));
+            }
+            else
+            {
+                // just scale/translate needed
+                aRetval *= createScaleTranslateB2DHomMatrix(
+                    rTargetRange.getRange(),
+                    rTargetRange.getMinimum());
+            }
+
+            return aRetval;
+        }
+
+        /// special for the case to map from source range to target range
+        B2DHomMatrix createSourceRangeTargetRangeTransform(
+            const B2DRange& rSourceRange,
+            const B2DRange& rTargetRange)
+        {
+            B2DHomMatrix aRetval;
+
+            if(&rSourceRange == &rTargetRange)
+            {
+                return aRetval;
+            }
+
+            if(!fTools::equalZero(rSourceRange.getMinX()) || !fTools::equalZero(rSourceRange.getMinY()))
+            {
+                aRetval.set(0, 2, -rSourceRange.getMinX());
+                aRetval.set(1, 2, -rSourceRange.getMinY());
+            }
+
+            const double fSourceW(rSourceRange.getWidth());
+            const double fSourceH(rSourceRange.getHeight());
+            const bool bDivX(!fTools::equalZero(fSourceW) && !fTools::equal(fSourceW, 1.0));
+            const bool bDivY(!fTools::equalZero(fSourceH) && !fTools::equal(fSourceH, 1.0));
+            const double fScaleX(bDivX ? rTargetRange.getWidth() / fSourceW : rTargetRange.getWidth());
+            const double fScaleY(bDivY ? rTargetRange.getHeight() / fSourceH : rTargetRange.getHeight());
+
+            if(!fTools::equalZero(fScaleX) || !fTools::equalZero(fScaleY))
+            {
+                aRetval.scale(fScaleX, fScaleY);
+            }
+
+            if(!fTools::equalZero(rTargetRange.getMinX()) || !fTools::equalZero(rTargetRange.getMinY()))
+            {
+                aRetval.translate(
+                    rTargetRange.getMinX(),
+                    rTargetRange.getMinY());
+            }
+
+            return aRetval;
+        }
+
+        B2DHomMatrix createCoordinateSystemTransform(
+            const B2DPoint& rOrigin,
+            const B2DVector& rX,
+            const B2DVector& rY)
+        {
+            return basegfx::B2DHomMatrix(
+                rX.getX(), rY.getX(), rOrigin.getX(),
+                rX.getY(), rY.getY(), rOrigin.getY());
+        }
+
+        B2DTuple getColumn(const B2DHomMatrix& rMatrix, sal_uInt16 nCol)
+        {
+            return B2DTuple(rMatrix.get(0, nCol), rMatrix.get(1, nCol));
+        }
+} // end of namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */