drawinglayer/source/primitive2d/textstrikeoutprimitive2d.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <primitive2d/textstrikeoutprimitive2d.hxx>
  21 #include <drawinglayer/primitive2d/textlayoutdevice.hxx>
  22 #include <drawinglayer/primitive2d/textprimitive2d.hxx>
  23 #include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
  24 #include <basegfx/polygon/b2dpolygon.hxx>
  25 #include <basegfx/matrix/b2dhommatrixtools.hxx>
  26 #include <drawinglayer/attribute/lineattribute.hxx>
  27 #include <drawinglayer/primitive2d/PolygonStrokePrimitive2D.hxx>
  28 #include <drawinglayer/primitive2d/transformprimitive2d.hxx>
  29 #include <osl/diagnose.h>
  30 #include <rtl/ustrbuf.hxx>
  31 #include <utility>
  32
  33
  34 namespace drawinglayer::primitive2d
  35 {
  36         BaseTextStrikeoutPrimitive2D::BaseTextStrikeoutPrimitive2D(
  37             basegfx::B2DHomMatrix aObjectTransformation,
  38             double fWidth,
  39             const basegfx::BColor& rFontColor)
  40         :   maObjectTransformation(std::move(aObjectTransformation)),
  41             mfWidth(fWidth),
  42             maFontColor(rFontColor)
  43         {
  44         }
  45
  46         bool BaseTextStrikeoutPrimitive2D::operator==( const BasePrimitive2D& rPrimitive ) const
  47         {
  48             if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
  49             {
  50                 const BaseTextStrikeoutPrimitive2D& rCompare = static_cast<const BaseTextStrikeoutPrimitive2D&>(rPrimitive);
  51
  52                 return (getObjectTransformation() == rCompare.getObjectTransformation()
  53                     && getWidth() == rCompare.getWidth()
  54                     && getFontColor() == rCompare.getFontColor());
  55             }
  56
  57             return false;
  58         }
  59
  60
  61         void TextCharacterStrikeoutPrimitive2D::create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& /*rViewInformation*/) const
  62         {
  63             // strikeout with character
  64             const OUString aSingleCharString(getStrikeoutChar());
  65             basegfx::B2DVector aScale, aTranslate;
  66             double fRotate, fShearX;
  67
  68             // get decomposition
  69             getObjectTransformation().decompose(aScale, aTranslate, fRotate, fShearX);
  70
  71             // prepare TextLayouter
  72             TextLayouterDevice aTextLayouter;
  73
  74             aTextLayouter.setFontAttribute(
  75                 getFontAttribute(),
  76                 aScale.getX(),
  77                 aScale.getY(),
  78                 getLocale());
  79
  80             const double fStrikeCharWidth(aTextLayouter.getTextWidth(aSingleCharString, 0, 1));
  81             const double fStrikeCharCount(fabs(getWidth()/fStrikeCharWidth));
  82             const sal_uInt32 nStrikeCharCount(static_cast< sal_uInt32 >(fStrikeCharCount + 0.5));
  83             std::vector<double> aDXArray(nStrikeCharCount);
  84             OUStringBuffer aStrikeoutString;
  85
  86             for(sal_uInt32 a(0); a < nStrikeCharCount; a++)
  87             {
  88                 aStrikeoutString.append(aSingleCharString);
  89                 aDXArray[a] = (a + 1) * fStrikeCharWidth;
  90             }
  91
  92             auto len = aStrikeoutString.getLength();
  93             rContainer.push_back(
  94                 new TextSimplePortionPrimitive2D(
  95                     getObjectTransformation(),
  96                     aStrikeoutString.makeStringAndClear(),
  97                     0,
  98                     len,
  99                     std::move(aDXArray),
 100                     {},
 101                     getFontAttribute(),
 102                     getLocale(),
 103                     getFontColor()));
 104         }
 105
 106         TextCharacterStrikeoutPrimitive2D::TextCharacterStrikeoutPrimitive2D(
 107             const basegfx::B2DHomMatrix& rObjectTransformation,
 108             double fWidth,
 109             const basegfx::BColor& rFontColor,
 110             sal_Unicode aStrikeoutChar,
 111             attribute::FontAttribute aFontAttribute,
 112             css::lang::Locale aLocale)
 113         :   BaseTextStrikeoutPrimitive2D(rObjectTransformation, fWidth, rFontColor),
 114             maStrikeoutChar(aStrikeoutChar),
 115             maFontAttribute(std::move(aFontAttribute)),
 116             maLocale(std::move(aLocale))
 117         {
 118         }
 119
 120         bool TextCharacterStrikeoutPrimitive2D::operator==( const BasePrimitive2D& rPrimitive ) const
 121         {
 122             if(BaseTextStrikeoutPrimitive2D::operator==(rPrimitive))
 123             {
 124                 const TextCharacterStrikeoutPrimitive2D& rCompare = static_cast<const TextCharacterStrikeoutPrimitive2D&>(rPrimitive);
 125
 126                 return (getStrikeoutChar() == rCompare.getStrikeoutChar()
 127                     && getFontAttribute() == rCompare.getFontAttribute()
 128                     && LocalesAreEqual(getLocale(), rCompare.getLocale()));
 129             }
 130
 131             return false;
 132         }
 133
 134         // provide unique ID
 135         sal_uInt32 TextCharacterStrikeoutPrimitive2D::getPrimitive2DID() const
 136         {
 137             return PRIMITIVE2D_ID_TEXTCHARACTERSTRIKEOUTPRIMITIVE2D;
 138         }
 139
 140         void TextGeometryStrikeoutPrimitive2D::create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& /*rViewInformation*/) const
 141         {
 142             OSL_ENSURE(TEXT_STRIKEOUT_SLASH != getTextStrikeout() && TEXT_STRIKEOUT_X != getTextStrikeout(),
 143                 "Wrong TEXT_STRIKEOUT type; a TextCharacterStrikeoutPrimitive2D should be used (!)");
 144
 145             // strikeout with geometry
 146             double fStrikeoutHeight(getHeight());
 147             double fStrikeoutOffset(getOffset());
 148             bool bDoubleLine(false);
 149
 150             // get decomposition
 151             basegfx::B2DVector aScale, aTranslate;
 152             double fRotate, fShearX;
 153             getObjectTransformation().decompose(aScale, aTranslate, fRotate, fShearX);
 154
 155             // set line attribute
 156             switch(getTextStrikeout())
 157             {
 158                 default : // case primitive2d::TEXT_STRIKEOUT_SINGLE:
 159                 {
 160                     break;
 161                 }
 162                 case primitive2d::TEXT_STRIKEOUT_DOUBLE:
 163                 {
 164                     bDoubleLine = true;
 165                     break;
 166                 }
 167                 case primitive2d::TEXT_STRIKEOUT_BOLD:
 168                 {
 169                     fStrikeoutHeight *= 2.0;
 170                     break;
 171                 }
 172             }
 173
 174             if(bDoubleLine)
 175             {
 176                 fStrikeoutOffset -= 0.50 * fStrikeoutHeight;
 177                 fStrikeoutHeight *= 0.64;
 178             }
 179
 180             // create base polygon and new primitive
 181             basegfx::B2DPolygon aStrikeoutLine;
 182
 183             aStrikeoutLine.append(basegfx::B2DPoint(0.0, -fStrikeoutOffset));
 184             aStrikeoutLine.append(basegfx::B2DPoint(getWidth(), -fStrikeoutOffset));
 185
 186             const basegfx::B2DHomMatrix aUnscaledTransform(
 187                 basegfx::utils::createShearXRotateTranslateB2DHomMatrix(
 188                     fShearX, fRotate, aTranslate));
 189
 190             aStrikeoutLine.transform(aUnscaledTransform);
 191
 192             // add primitive
 193             const attribute::LineAttribute aLineAttribute(getFontColor(), fStrikeoutHeight, basegfx::B2DLineJoin::NONE);
 194             Primitive2DContainer xRetval(1);
 195             xRetval[0] = new PolygonStrokePrimitive2D(std::move(aStrikeoutLine), aLineAttribute);
 196
 197             if(bDoubleLine)
 198             {
 199                 // double line, create 2nd primitive with offset using TransformPrimitive based on
 200                 // already created NewPrimitive
 201                 const double fLineDist(2.0 * fStrikeoutHeight);
 202
 203                 // move base point of text to 0.0 and de-rotate
 204                 basegfx::B2DHomMatrix aTransform(basegfx::utils::createTranslateB2DHomMatrix(
 205                     -aTranslate.getX(), -aTranslate.getY()));
 206                 aTransform.rotate(-fRotate);
 207
 208                 // translate in Y by offset
 209                 aTransform.translate(0.0, -fLineDist);
 210
 211                 // move back and rotate
 212                 aTransform.rotate(fRotate);
 213                 aTransform.translate(aTranslate.getX(), aTranslate.getY());
 214
 215                 // add transform primitive
 216                 xRetval.push_back(
 217                         new TransformPrimitive2D(
 218                             aTransform,
 219                             Primitive2DContainer(xRetval)));
 220             }
 221
 222             rContainer.append(std::move(xRetval));
 223         }
 224
 225         TextGeometryStrikeoutPrimitive2D::TextGeometryStrikeoutPrimitive2D(
 226             const basegfx::B2DHomMatrix& rObjectTransformation,
 227             double fWidth,
 228             const basegfx::BColor& rFontColor,
 229             double fHeight,
 230             double fOffset,
 231             TextStrikeout eTextStrikeout)
 232         :   BaseTextStrikeoutPrimitive2D(rObjectTransformation, fWidth, rFontColor),
 233             mfHeight(fHeight),
 234             mfOffset(fOffset),
 235             meTextStrikeout(eTextStrikeout)
 236         {
 237         }
 238
 239         bool TextGeometryStrikeoutPrimitive2D::operator==( const BasePrimitive2D& rPrimitive ) const
 240         {
 241             if(BaseTextStrikeoutPrimitive2D::operator==(rPrimitive))
 242             {
 243                 const TextGeometryStrikeoutPrimitive2D& rCompare = static_cast<const TextGeometryStrikeoutPrimitive2D&>(rPrimitive);
 244
 245                 return (getHeight() == rCompare.getHeight()
 246                     && getOffset() == rCompare.getOffset()
 247                     && getTextStrikeout() == rCompare.getTextStrikeout());
 248             }
 249
 250             return false;
 251         }
 252
 253         // provide unique ID
 254         sal_uInt32 TextGeometryStrikeoutPrimitive2D::getPrimitive2DID() const
 255         {
 256             return PRIMITIVE2D_ID_TEXTGEOMETRYSTRIKEOUTPRIMITIVE2D;
 257         }
 258
 259 } // end of namespace
 260
 261 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */