/* -*- 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_VCL_GRAPHICTOOLS_HXX #define INCLUDED_VCL_GRAPHICTOOLS_HXX #include #include #include #include #include #include #include #include #include /** Encapsulates geometry and associated attributes of a graphical 'pen stroke' @attention Widespread use is deprecated. See declarations above for the way to go. Especially the copied enums from svx/xenum.hxx are troublesome. Use this class to store geometry and attributes of a graphical 'pen stroke', such as pen width, dashing etc. The geometry is the so-called 'path' along which the stroke is traced, with the given pen width. The cap type determines how the open ends of the path should be drawn. If the geometry consists of more than one segment, the join type determines in which way the segments are joined. */ class VCL_DLLPUBLIC SvtGraphicStroke { public: /// Style for open stroke ends enum CapType { /// No additional cap capButt=0, /// Half-round cap at the line end, the center lying at the end point capRound, /// Half-square cap at the line end, the center lying at the end point capSquare }; /// Style for joins of individual stroke segments enum JoinType { /// Extend segment edges, until they cross joinMiter=0, /// Connect segments by a filled round arc joinRound, /// Connect segments by a direct straight line joinBevel, /// Perform no join, leads to visible gaps between thick line segments joinNone }; enum { /// Width of stroke start/end arrow to exactly fit the joining stroke normalizedArrowWidth=65536 }; typedef ::std::vector< double > DashArray; SvtGraphicStroke(); /** All in one constructor See accessor method descriptions for argument description */ SvtGraphicStroke( const Polygon& rPath, const PolyPolygon& rStartArrow, const PolyPolygon& rEndArrow, double fTransparency, double fStrokeWidth, CapType aCap, JoinType aJoin, double fMiterLimit, const DashArray& rDashArray ); // TODO: Dash array offset (position where to start, see PS) // accessors /// Query path to stroke void getPath ( Polygon& ) const; /** Get the polygon that is put at the start of the line The polygon is in a special normalized position: the center of the stroked path will meet the given polygon at (0,0) from negative y values. Thus, an arrow would have its baseline on the x axis, going upwards to positive y values. Furthermore, the polygon is also scaled in a special way: the width of the joining stroke is defined to be SvtGraphicStroke::normalizedArrowWidth (0x10000), i.e. ranging from x=-0x8000 to x=0x8000. So, if the arrow does have this width, it has to fit every stroke with every stroke width exactly. */ void getStartArrow ( PolyPolygon& ) const; /** Get the polygon that is put at the end of the line The polygon is in a special normalized position, and already scaled to the desired size: the center of the stroked path will meet the given polygon at (0,0) from negative y values. Thus, an arrow would have its baseline on the x axis, going upwards to positive y values. Furthermore, the polygon is also scaled in a special way: the width of the joining stroke is defined to be SvtGraphicStroke::normalizedArrowWidth (0x10000), i.e. ranging from x=-0x8000 to x=0x8000. So, if the arrow does have this width, it has to fit every stroke with every stroke width exactly. */ void getEndArrow ( PolyPolygon& ) const; /** Get stroke transparency @return the transparency, ranging from 0.0 (opaque) to 1.0 (fully translucent) */ double getTransparency () const; /// Get width of the stroke double getStrokeWidth () const; /// Get the style in which open stroke ends are drawn CapType getCapType () const; /// Get the style in which the stroke segments are joined JoinType getJoinType () const; /// Get the maximum length of mitered joins double getMiterLimit () const; /// Get an array of "on" and "off" lengths for stroke dashing void getDashArray ( DashArray& ) const; // mutators /// Set path to stroke void setPath ( const Polygon& ); /** Set the polygon that is put at the start of the line The polygon has to be in a special normalized position, and already scaled to the desired size: the center of the stroked path will meet the given polygon at (0,0) from negative y values. Thus, an arrow would have its baseline on the x axis, going upwards to positive y values. Furthermore, the polygon also has to be scaled appropriately: the width of the joining stroke is defined to be SvtGraphicStroke::normalizedArrowWidth (0x10000), i.e. ranging from x=-0x8000 to x=0x8000. If your arrow does have this width, it will fit every stroke with every stroke width exactly. */ void setStartArrow ( const PolyPolygon& ); /** Set the polygon that is put at the end of the line The polygon has to be in a special normalized position, and already scaled to the desired size: the center of the stroked path will meet the given polygon at (0,0) from negative y values. Thus, an arrow would have its baseline on the x axis, going upwards to positive y values. Furthermore, the polygon also has to be scaled appropriately: the width of the joining stroke is defined to be SvtGraphicStroke::normalizedArrowWidth (0x10000), i.e. ranging from x=-0x8000 to x=0x8000. If your arrow does have this width, it will fit every stroke with every stroke width exactly. */ void setEndArrow ( const PolyPolygon& ); /// Affine scaling in both X and Y dimensions void scale ( double fScaleX, double fScaleY ); private: // friends VCL_DLLPUBLIC friend SvStream& WriteSvtGraphicStroke( SvStream& rOStm, const SvtGraphicStroke& rClass ); VCL_DLLPUBLIC friend SvStream& ReadSvtGraphicStroke( SvStream& rIStm, SvtGraphicStroke& rClass ); Polygon maPath; PolyPolygon maStartArrow; PolyPolygon maEndArrow; double mfTransparency; double mfStrokeWidth; CapType maCapType; JoinType maJoinType; double mfMiterLimit; DashArray maDashArray; }; /** Encapsulates geometry and associated attributes of a filled area @attention Widespread use is deprecated. See declarations above for the way to go. Especially the copied enums from svx/xenum.hxx is troublesome. Use this class to store geometry and attributes of a filled area, such as fill color, transparency, texture or hatch. The geometry is the so-called 'path', whose inner area will get filled according to the attributes set. If the path is intersecting, or one part of the path is lying fully within another part, then the fill rule determines which parts are filled and which are not. */ class VCL_DLLPUBLIC SvtGraphicFill { public: /// Type of fill algorithm used enum FillRule { /** Non-zero winding rule Fill shape scanline-wise. Starting at the left, determine the winding number as follows: every segment crossed that runs counter-clockwise adds one to the winding number, every segment crossed that runs clockwise subtracts one. The part of the scanline where the winding number is non-zero gets filled. */ fillNonZero=0, /** Even-odd fill rule Fill shape scanline-wise. Starting at the left, count the number of segments crossed. If this number is odd, the part of the scanline is filled, otherwise not. */ fillEvenOdd }; /// Type of filling used enum FillType { /// Fill with a specified solid color fillSolid=0, /// Fill with the specified gradient fillGradient, /// Fill with the specified hatch fillHatch, /// Fill with the specified texture (a Graphic object) fillTexture }; /// Type of hatching used enum HatchType { /// horizontal parallel lines, one unit apart hatchSingle=0, /// horizontal and verticall orthogonally crossing lines, one unit apart hatchDouble, /// three crossing lines, like HatchType::hatchDouble, but /// with an additional diagonal line, rising to the upper /// right corner. The first diagonal line goes through the /// upper left corner, the other are each spaced a unit apart. hatchTriple }; /// Type of gradient used enum GradientType {gradientLinear=0, gradientRadial, gradientRectangular}; /// Special values for gradient step count enum { gradientStepsInfinite=0 }; /** Homogeneous 2D transformation matrix This is a 2x3 matrix representing an affine transformation on the R^2, in the usual C/C++ row major form. It is structured as follows: 
        a b t_x
        c d t_y
        0 0 1
where the lowest line is not stored in the matrix, since it is constant. Variables t_x and t_y contain translational components, a to d rotation, scale and shear (for details, look up your favorite linear algebra/computer graphics book). */ struct VCL_DLLPUBLIC Transform { enum { MatrixSize=6 }; Transform(); double matrix[MatrixSize]; }; SvtGraphicFill(); /** All in one constructor See accessor method descriptions for argument description */ SvtGraphicFill( const PolyPolygon& rPath, Color aFillColor, double fTransparency, FillRule aFillRule, FillType aFillType, // TODO: Multitexturing const Transform& aFillTransform, bool bTiling, HatchType aHatchType, // TODO: vector of directions and start points Color aHatchColor, GradientType aGradientType, // TODO: Transparent gradients (orthogonal to normal ones) Color aGradient1stColor, // TODO: vector of colors and offsets Color aGradient2ndColor, sal_Int32 aGradientStepCount, // numbers of steps to render the gradient. gradientStepsInfinite means infinitely many. const Graphic& aFillGraphic ); // accessors /// Query path to fill void getPath ( PolyPolygon& ) const; /// Get color used for solid fills Color getFillColor () const; /** Get stroke transparency @return the transparency, ranging from 0.0 (opaque) to 1.0 (fully translucent) */ double getTransparency () const; /// Get fill rule used FillRule getFillRule () const; /** Get fill type used Currently, only one of the fill types can be used simultaneously. If you specify e.g. FillRule::fillGradient, hatching, texture and solid fill color are ignored. */ FillType getFillType () const; /** Get transformation applied to hatch, gradient or texture during fill A fill operation generally starts at the top left position of the object's bounding box. At that position (if tiling is on, also all successive positions), the specified fill graphic is rendered, after applying the fill transformation to it. For example, if the fill transformation contains a translation, the fill graphic is rendered at the object's bounding box's top left corner plus the translation components. */ void getTransform ( Transform& ) const; /// deprecated bool IsTiling () const; /** Query state of texture tiling @return true, if texture is tiled, false, if output only once. */ bool isTiling () const; /// Get type of gradient used GradientType getGradientType () const; /** Get the texture graphic used The Graphic object returned is used to fill the geometry, if the FillType is fillTexture. The Graphic object is always assumed to be of size 1x1, the transformation is used to scale it to the appropriate size. */ void getGraphic ( Graphic& ) const; // mutators /// Set path to fill void setPath ( const PolyPolygon& rPath ); private: // friends VCL_DLLPUBLIC friend SvStream& WriteSvtGraphicFill( SvStream& rOStm, const SvtGraphicFill& rClass ); VCL_DLLPUBLIC friend SvStream& ReadSvtGraphicFill( SvStream& rIStm, SvtGraphicFill& rClass ); PolyPolygon maPath; Color maFillColor; double mfTransparency; FillRule maFillRule; FillType maFillType; Transform maFillTransform; bool mbTiling; HatchType maHatchType; Color maHatchColor; GradientType maGradientType; Color maGradient1stColor; Color maGradient2ndColor; sal_Int32 maGradientStepCount; Graphic maFillGraphic; }; #endif // INCLUDED_VCL_GRAPHICTOOLS_HXX /* vim:set shiftwidth=4 softtabstop=4 expandtab: */