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| -rw-r--r-- | include/svx/svdtrans.hxx | 302 |
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diff --git a/include/svx/svdtrans.hxx b/include/svx/svdtrans.hxx new file mode 100644 index 000000000..9e5bca9fd --- /dev/null +++ b/include/svx/svdtrans.hxx @@ -0,0 +1,302 @@ +/* -*- 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 . + */ + +#ifndef INCLUDED_SVX_SVDTRANS_HXX +#define INCLUDED_SVX_SVDTRANS_HXX + +#include <rtl/ustring.hxx> +#include <svx/svxdllapi.h> +#include <tools/fldunit.hxx> +#include <tools/fract.hxx> +#include <tools/gen.hxx> +#include <tools/helpers.hxx> +#include <tools/mapunit.hxx> +#include <tools/poly.hxx> + +// The DrawingEngine's angles are specified in 1/100th degrees +// We need to convert these angles to radians, in order to be able +// to process them with trigonometric functions. +// This is done, using the constant F_PI18000. +// +// Example usage: +// nAngle ... is an angle in 1/100 Deg +// +// Which is converted, by this: +// double nSin=sin(nAngle*F_PI18000); +// +// To convert it back, we use division. + +// That maximum shear angle +#define SDRMAXSHEAR 8900 + +class XPolygon; +class XPolyPolygon; + +inline void MovePoly(tools::Polygon& rPoly, const Size& S) { rPoly.Move(S.Width(),S.Height()); } +void MoveXPoly(XPolygon& rPoly, const Size& S); + +SVXCORE_DLLPUBLIC void ResizeRect(tools::Rectangle& rRect, const Point& rRef, const Fraction& xFact, const Fraction& yFact); +inline void ResizePoint(Point& rPnt, const Point& rRef, const Fraction& xFract, const Fraction& yFract); +void ResizePoly(tools::Polygon& rPoly, const Point& rRef, const Fraction& xFact, const Fraction& yFact); +void ResizeXPoly(XPolygon& rPoly, const Point& rRef, const Fraction& xFact, const Fraction& yFact); + +inline void RotatePoint(Point& rPnt, const Point& rRef, double sn, double cs); +SVXCORE_DLLPUBLIC void RotatePoly(tools::Polygon& rPoly, const Point& rRef, double sn, double cs); +void RotateXPoly(XPolygon& rPoly, const Point& rRef, double sn, double cs); +void RotateXPoly(XPolyPolygon& rPoly, const Point& rRef, double sn, double cs); + +void MirrorPoint(Point& rPnt, const Point& rRef1, const Point& rRef2); +void MirrorXPoly(XPolygon& rPoly, const Point& rRef1, const Point& rRef2); + +inline void ShearPoint(Point& rPnt, const Point& rRef, double tn, bool bVShear = false); +SVXCORE_DLLPUBLIC void ShearPoly(tools::Polygon& rPoly, const Point& rRef, double tn); +void ShearXPoly(XPolygon& rPoly, const Point& rRef, double tn, bool bVShear = false); + +/** + * rPnt.X/rPnt.Y is set to rCenter.X or rCenter.Y! + * We then only need to rotate rPnt by rCenter. + * + * @return the returned angle is in rad + */ +inline double GetCrookAngle(Point& rPnt, const Point& rCenter, const Point& rRad, bool bVertical); + +/** + * The following methods accept a point of an XPolygon, whereas the neighbouring + * control points of the actual point are passed in pC1/pC2. + * Via rSin/rCos, sin(nAngle) and cos(nAngle) are returned. + * + * @return the returned angle is in rad + */ +double CrookRotateXPoint(Point& rPnt, Point* pC1, Point* pC2, const Point& rCenter, + const Point& rRad, double& rSin, double& rCos, bool bVert); +double CrookSlantXPoint(Point& rPnt, Point* pC1, Point* pC2, const Point& rCenter, + const Point& rRad, double& rSin, double& rCos, bool bVert); +double CrookStretchXPoint(Point& rPnt, Point* pC1, Point* pC2, const Point& rCenter, + const Point& rRad, double& rSin, double& rCos, bool bVert, + const tools::Rectangle& rRefRect); + +void CrookRotatePoly(XPolygon& rPoly, const Point& rCenter, const Point& rRad, bool bVert); +void CrookSlantPoly(XPolygon& rPoly, const Point& rCenter, const Point& rRad, bool bVert); +void CrookStretchPoly(XPolygon& rPoly, const Point& rCenter, const Point& rRad, bool bVert, const tools::Rectangle& rRefRect); + +void CrookRotatePoly(XPolyPolygon& rPoly, const Point& rCenter, const Point& rRad, bool bVert); +void CrookSlantPoly(XPolyPolygon& rPoly, const Point& rCenter, const Point& rRad, bool bVert); +void CrookStretchPoly(XPolyPolygon& rPoly, const Point& rCenter, const Point& rRad, bool bVert, const tools::Rectangle& rRefRect); + +/**************************************************************************************************/ +/* Inline */ +/**************************************************************************************************/ + +inline void ResizePoint(Point& rPnt, const Point& rRef, const Fraction& xFract, const Fraction& yFract) +{ + double nxFract = xFract.IsValid() ? static_cast<double>(xFract) : 1.0; + double nyFract = yFract.IsValid() ? static_cast<double>(yFract) : 1.0; + rPnt.setX(rRef.X() + FRound( (rPnt.X() - rRef.X()) * nxFract )); + rPnt.setY(rRef.Y() + FRound( (rPnt.Y() - rRef.Y()) * nyFract )); +} + +inline void RotatePoint(Point& rPnt, const Point& rRef, double sn, double cs) +{ + long dx=rPnt.X()-rRef.X(); + long dy=rPnt.Y()-rRef.Y(); + rPnt.setX(FRound(rRef.X()+dx*cs+dy*sn)); + rPnt.setY(FRound(rRef.Y()+dy*cs-dx*sn)); +} + +inline void ShearPoint(Point& rPnt, const Point& rRef, double tn, bool bVShear) +{ + if (!bVShear) { // Horizontal + if (rPnt.Y()!=rRef.Y()) { // else not needed + rPnt.AdjustX(-FRound((rPnt.Y()-rRef.Y())*tn)); + } + } else { // or else vertical + if (rPnt.X()!=rRef.X()) { // else not needed + rPnt.AdjustY(-FRound((rPnt.X()-rRef.X())*tn)); + } + } +} + +inline double GetCrookAngle(Point& rPnt, const Point& rCenter, const Point& rRad, bool bVertical) +{ + double nAngle; + if (bVertical) { + long dy=rPnt.Y()-rCenter.Y(); + nAngle=static_cast<double>(dy)/static_cast<double>(rRad.Y()); + rPnt.setY(rCenter.Y()); + } else { + long dx=rCenter.X()-rPnt.X(); + nAngle=static_cast<double>(dx)/static_cast<double>(rRad.X()); + rPnt.setX(rCenter.X()); + } + return nAngle; +} + +/**************************************************************************************************/ +/**************************************************************************************************/ + +/** + * The Y axis points down! + * The function negates the Y axis, when calculating the angle, such + * that GetAngle(Point(0,-1))=90 deg. + * GetAngle(Point(0,0)) returns 0. + * + * @return the returned value is in the range of -180.00..179.99 deg + * and is in 1/100 deg units + */ +SVXCORE_DLLPUBLIC long GetAngle(const Point& rPnt); + +long NormAngle18000(long a); /// Normalize angle to -180.00..179.99 + +SVXCORE_DLLPUBLIC long NormAngle36000(long a); /// Normalize angle to 0.00..359.99 + +sal_uInt16 GetAngleSector(long nAngle); /// Determine sector within the cartesian coordinate system + +/** + * Calculates the length of (0,0) via a^2 + b^2 = c^2 + * In order to avoid overflows, we ignore some decimal places. + */ +long GetLen(const Point& rPnt); + +/** + * The transformation of a rectangle into a polygon, by + * using angle parameters from GeoStat. ------------ + * The point of reference is always the Point 0, meaning /1 2/ + * the upper left corner of the initial rectangle. / / + * When calculating the polygon, the order is first / / + * shear and then the rotation. / / + * / / \ + * / / | + * A) Initial rectangle aRect B) After applying Shear /0 3/ Rot| + * +------------------+ -------------------- ------------------ + * |0 1| \0 1\ C) After applying Rotate + * | | \ \ + * | | | \ \ + * |3 2| | \3 2\ + * +------------------+ | -------------------- + * |Shr + * + * When converting the polygon back into a rect, the order is necessarily the + * other way around: + * - Calculating the rotation angle: angle of the line 0-1 in figure C) to the horizontal + * - Turning the sheared rect back (we get figure B) + * - Determining the width of the rect = length of the line 0-1 in figure B) + * - Determining the height of the rect = vertical distance between the points 0 and 3 + * of figure B) + * - Determining the shear angle from the line 0-3 to the perpendicular line. + * + * We need to keep in mind that the polygon can be mirrored when it was + * transformed in the meantime (e.g. mirror or resize with negative factor). + * In that case, we first need to normalize, by swapping points (0 with 3 and 1 + * with 2), so that it has the right orientation. + * + * Note: a positive shear angle means a shear with a positive visible curvature + * on the screen. Mathematically, that would be a negative curvature, as the + * Y axis runs from top to bottom on the screen. + * Rotation angle: positive means a visible left rotation. + */ + +class GeoStat { // Geometric state for a rect +public: + long nRotationAngle; + long nShearAngle; + double nTan; // tan(nShearAngle) + double nSin; // sin(nRotationAngle) + double nCos; // cos(nRotationAngle) + + GeoStat(): nRotationAngle(0),nShearAngle(0),nTan(0.0),nSin(0.0),nCos(1.0) {} + void RecalcSinCos(); + void RecalcTan(); +}; + +tools::Polygon Rect2Poly(const tools::Rectangle& rRect, const GeoStat& rGeo); +void Poly2Rect(const tools::Polygon& rPol, tools::Rectangle& rRect, GeoStat& rGeo); + +void OrthoDistance8(const Point& rPt0, Point& rPt, bool bBigOrtho); +void OrthoDistance4(const Point& rPt0, Point& rPt, bool bBigOrtho); + +// Multiplication and subsequent division +// Calculation and intermediate values are in BigInt +SVXCORE_DLLPUBLIC long BigMulDiv(long nVal, long nMul, long nDiv); + +class FrPair { + Fraction aX; + Fraction aY; +public: + FrPair(const Fraction& rBoth) : aX(rBoth),aY(rBoth) {} + FrPair(const Fraction& rX, const Fraction& rY) : aX(rX),aY(rY) {} + FrPair(long nMul, long nDiv) : aX(nMul,nDiv),aY(nMul,nDiv) {} + FrPair(long xMul, long xDiv, long yMul, long yDiv): aX(xMul,xDiv),aY(yMul,yDiv) {} + const Fraction& X() const { return aX; } + const Fraction& Y() const { return aY; } + Fraction& X() { return aX; } + Fraction& Y() { return aY; } +}; + +// To convert units of measurement +SVXCORE_DLLPUBLIC FrPair GetMapFactor(MapUnit eS, MapUnit eD); +FrPair GetMapFactor(FieldUnit eS, FieldUnit eD); + +inline bool IsMetric(MapUnit eU) { + return (eU==MapUnit::Map100thMM || eU==MapUnit::Map10thMM || eU==MapUnit::MapMM || eU==MapUnit::MapCM); +} + +inline bool IsInch(MapUnit eU) { + return (eU==MapUnit::Map1000thInch || eU==MapUnit::Map100thInch || eU==MapUnit::Map10thInch || eU==MapUnit::MapInch || + eU==MapUnit::MapPoint || eU==MapUnit::MapTwip); +} + +inline bool IsMetric(FieldUnit eU) { + return (eU == FieldUnit::MM || eU == FieldUnit::CM || eU == FieldUnit::M + || eU == FieldUnit::KM || eU == FieldUnit::MM_100TH); +} + +inline bool IsInch(FieldUnit eU) { + return (eU == FieldUnit::TWIP || eU == FieldUnit::POINT + || eU == FieldUnit::PICA || eU == FieldUnit::INCH + || eU == FieldUnit::FOOT || eU == FieldUnit::MILE); +} + +class SVXCORE_DLLPUBLIC SdrFormatter { + long nMul_; + long nDiv_; + short nComma_; + bool bDirty; + MapUnit eSrcMU; + MapUnit eDstMU; +private: + SVX_DLLPRIVATE void Undirty(); +public: + SdrFormatter(MapUnit eSrc, MapUnit eDst) + : nMul_(0) + , nDiv_(0) + , nComma_(0) + , bDirty(true) + , eSrcMU(eSrc) + , eDstMU(eDst) + { + } + OUString GetStr(long nVal) const; + static OUString GetUnitStr(MapUnit eUnit); + static OUString GetUnitStr(FieldUnit eUnit); +}; + + +#endif // INCLUDED_SVX_SVDTRANS_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |