1*cdf0e10cSrcweir /************************************************************************* 2*cdf0e10cSrcweir * 3*cdf0e10cSrcweir * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4*cdf0e10cSrcweir * 5*cdf0e10cSrcweir * Copyright 2000, 2010 Oracle and/or its affiliates. 6*cdf0e10cSrcweir * 7*cdf0e10cSrcweir * OpenOffice.org - a multi-platform office productivity suite 8*cdf0e10cSrcweir * 9*cdf0e10cSrcweir * This file is part of OpenOffice.org. 10*cdf0e10cSrcweir * 11*cdf0e10cSrcweir * OpenOffice.org is free software: you can redistribute it and/or modify 12*cdf0e10cSrcweir * it under the terms of the GNU Lesser General Public License version 3 13*cdf0e10cSrcweir * only, as published by the Free Software Foundation. 14*cdf0e10cSrcweir * 15*cdf0e10cSrcweir * OpenOffice.org is distributed in the hope that it will be useful, 16*cdf0e10cSrcweir * but WITHOUT ANY WARRANTY; without even the implied warranty of 17*cdf0e10cSrcweir * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18*cdf0e10cSrcweir * GNU Lesser General Public License version 3 for more details 19*cdf0e10cSrcweir * (a copy is included in the LICENSE file that accompanied this code). 20*cdf0e10cSrcweir * 21*cdf0e10cSrcweir * You should have received a copy of the GNU Lesser General Public License 22*cdf0e10cSrcweir * version 3 along with OpenOffice.org. If not, see 23*cdf0e10cSrcweir * <http://www.openoffice.org/license.html> 24*cdf0e10cSrcweir * for a copy of the LGPLv3 License. 25*cdf0e10cSrcweir * 26*cdf0e10cSrcweir ************************************************************************/ 27*cdf0e10cSrcweir 28*cdf0e10cSrcweir #ifndef INCLUDED_BASEBMP_PIXELITERATOR_HXX 29*cdf0e10cSrcweir #define INCLUDED_BASEBMP_PIXELITERATOR_HXX 30*cdf0e10cSrcweir 31*cdf0e10cSrcweir #include <basebmp/metafunctions.hxx> 32*cdf0e10cSrcweir #include <basebmp/stridedarrayiterator.hxx> 33*cdf0e10cSrcweir 34*cdf0e10cSrcweir #include <vigra/metaprogramming.hxx> 35*cdf0e10cSrcweir #include <vigra/diff2d.hxx> 36*cdf0e10cSrcweir 37*cdf0e10cSrcweir namespace basebmp 38*cdf0e10cSrcweir { 39*cdf0e10cSrcweir 40*cdf0e10cSrcweir template< typename Valuetype > class PixelColumnIterator 41*cdf0e10cSrcweir { 42*cdf0e10cSrcweir public: 43*cdf0e10cSrcweir typedef Valuetype value_type; 44*cdf0e10cSrcweir typedef Valuetype& reference; 45*cdf0e10cSrcweir typedef reference index_reference; 46*cdf0e10cSrcweir typedef Valuetype* pointer; 47*cdf0e10cSrcweir typedef int difference_type; 48*cdf0e10cSrcweir typedef image_traverser_tag iterator_category; 49*cdf0e10cSrcweir 50*cdf0e10cSrcweir typedef StridedArrayIterator< value_type > MoveY; 51*cdf0e10cSrcweir 52*cdf0e10cSrcweir private: 53*cdf0e10cSrcweir MoveY y; 54*cdf0e10cSrcweir 55*cdf0e10cSrcweir bool equal( PixelColumnIterator const & rhs ) const 56*cdf0e10cSrcweir { 57*cdf0e10cSrcweir return rhs.y == y; 58*cdf0e10cSrcweir } 59*cdf0e10cSrcweir 60*cdf0e10cSrcweir bool less( PixelColumnIterator const & rhs ) const 61*cdf0e10cSrcweir { 62*cdf0e10cSrcweir return y < rhs.y; 63*cdf0e10cSrcweir } 64*cdf0e10cSrcweir 65*cdf0e10cSrcweir public: 66*cdf0e10cSrcweir PixelColumnIterator() : 67*cdf0e10cSrcweir y(0) 68*cdf0e10cSrcweir {} 69*cdf0e10cSrcweir 70*cdf0e10cSrcweir explicit PixelColumnIterator( const MoveY& pos ) : 71*cdf0e10cSrcweir y(pos) 72*cdf0e10cSrcweir {} 73*cdf0e10cSrcweir 74*cdf0e10cSrcweir PixelColumnIterator( const MoveY& pos, int x ) : 75*cdf0e10cSrcweir y(pos,x) 76*cdf0e10cSrcweir {} 77*cdf0e10cSrcweir 78*cdf0e10cSrcweir PixelColumnIterator& operator+=( difference_type d ) 79*cdf0e10cSrcweir { 80*cdf0e10cSrcweir y += d; 81*cdf0e10cSrcweir return *this; 82*cdf0e10cSrcweir } 83*cdf0e10cSrcweir 84*cdf0e10cSrcweir PixelColumnIterator& operator-=( difference_type d ) 85*cdf0e10cSrcweir { 86*cdf0e10cSrcweir y -= d; 87*cdf0e10cSrcweir return *this; 88*cdf0e10cSrcweir } 89*cdf0e10cSrcweir 90*cdf0e10cSrcweir PixelColumnIterator operator+( difference_type d ) 91*cdf0e10cSrcweir { 92*cdf0e10cSrcweir PixelColumnIterator res(*this); 93*cdf0e10cSrcweir res += d; 94*cdf0e10cSrcweir return res; 95*cdf0e10cSrcweir } 96*cdf0e10cSrcweir 97*cdf0e10cSrcweir PixelColumnIterator operator-( difference_type d ) 98*cdf0e10cSrcweir { 99*cdf0e10cSrcweir PixelColumnIterator res(*this); 100*cdf0e10cSrcweir res -= d; 101*cdf0e10cSrcweir return res; 102*cdf0e10cSrcweir } 103*cdf0e10cSrcweir 104*cdf0e10cSrcweir PixelColumnIterator& operator++() 105*cdf0e10cSrcweir { 106*cdf0e10cSrcweir ++y; 107*cdf0e10cSrcweir return *this; 108*cdf0e10cSrcweir } 109*cdf0e10cSrcweir 110*cdf0e10cSrcweir PixelColumnIterator& operator--() 111*cdf0e10cSrcweir { 112*cdf0e10cSrcweir --y; 113*cdf0e10cSrcweir return *this; 114*cdf0e10cSrcweir } 115*cdf0e10cSrcweir 116*cdf0e10cSrcweir PixelColumnIterator operator++(int) 117*cdf0e10cSrcweir { 118*cdf0e10cSrcweir PixelColumnIterator res(*this); 119*cdf0e10cSrcweir ++y; 120*cdf0e10cSrcweir return res; 121*cdf0e10cSrcweir } 122*cdf0e10cSrcweir 123*cdf0e10cSrcweir PixelColumnIterator operator--(int) 124*cdf0e10cSrcweir { 125*cdf0e10cSrcweir PixelColumnIterator res(*this); 126*cdf0e10cSrcweir --y; 127*cdf0e10cSrcweir return res; 128*cdf0e10cSrcweir } 129*cdf0e10cSrcweir 130*cdf0e10cSrcweir bool operator==(PixelColumnIterator const & rhs) const 131*cdf0e10cSrcweir { 132*cdf0e10cSrcweir return equal( rhs ); 133*cdf0e10cSrcweir } 134*cdf0e10cSrcweir 135*cdf0e10cSrcweir bool operator!=(PixelColumnIterator const & rhs) const 136*cdf0e10cSrcweir { 137*cdf0e10cSrcweir return !equal( rhs ); 138*cdf0e10cSrcweir } 139*cdf0e10cSrcweir 140*cdf0e10cSrcweir bool operator<(PixelColumnIterator const & rhs) const 141*cdf0e10cSrcweir { 142*cdf0e10cSrcweir return less(rhs); 143*cdf0e10cSrcweir } 144*cdf0e10cSrcweir 145*cdf0e10cSrcweir bool operator<=(PixelColumnIterator const & rhs) const 146*cdf0e10cSrcweir { 147*cdf0e10cSrcweir return !rhs.less(*this); 148*cdf0e10cSrcweir } 149*cdf0e10cSrcweir 150*cdf0e10cSrcweir bool operator>(PixelColumnIterator const & rhs) const 151*cdf0e10cSrcweir { 152*cdf0e10cSrcweir return rhs.less(*this); 153*cdf0e10cSrcweir } 154*cdf0e10cSrcweir 155*cdf0e10cSrcweir bool operator>=(PixelColumnIterator const & rhs) const 156*cdf0e10cSrcweir { 157*cdf0e10cSrcweir return !less(rhs); 158*cdf0e10cSrcweir } 159*cdf0e10cSrcweir 160*cdf0e10cSrcweir difference_type operator-(PixelColumnIterator const & rhs) const 161*cdf0e10cSrcweir { 162*cdf0e10cSrcweir return y - rhs.y; 163*cdf0e10cSrcweir } 164*cdf0e10cSrcweir 165*cdf0e10cSrcweir value_type get() const 166*cdf0e10cSrcweir { 167*cdf0e10cSrcweir return *y(); 168*cdf0e10cSrcweir } 169*cdf0e10cSrcweir 170*cdf0e10cSrcweir value_type get(difference_type d) const 171*cdf0e10cSrcweir { 172*cdf0e10cSrcweir return *y(d); 173*cdf0e10cSrcweir } 174*cdf0e10cSrcweir 175*cdf0e10cSrcweir void set( value_type v ) const 176*cdf0e10cSrcweir { 177*cdf0e10cSrcweir *y() = v; 178*cdf0e10cSrcweir } 179*cdf0e10cSrcweir 180*cdf0e10cSrcweir void set( value_type v, difference_type d ) const 181*cdf0e10cSrcweir { 182*cdf0e10cSrcweir *y(d) = v; 183*cdf0e10cSrcweir } 184*cdf0e10cSrcweir 185*cdf0e10cSrcweir reference operator*() const 186*cdf0e10cSrcweir { 187*cdf0e10cSrcweir return *y(); 188*cdf0e10cSrcweir } 189*cdf0e10cSrcweir 190*cdf0e10cSrcweir pointer operator->() const 191*cdf0e10cSrcweir { 192*cdf0e10cSrcweir return y(); 193*cdf0e10cSrcweir } 194*cdf0e10cSrcweir 195*cdf0e10cSrcweir reference operator[](difference_type d) const 196*cdf0e10cSrcweir { 197*cdf0e10cSrcweir return *y(d); 198*cdf0e10cSrcweir } 199*cdf0e10cSrcweir 200*cdf0e10cSrcweir reference operator()(int dy) const 201*cdf0e10cSrcweir { 202*cdf0e10cSrcweir return *y(dy); 203*cdf0e10cSrcweir } 204*cdf0e10cSrcweir }; 205*cdf0e10cSrcweir 206*cdf0e10cSrcweir template< typename Valuetype > class PixelIterator 207*cdf0e10cSrcweir { 208*cdf0e10cSrcweir public: 209*cdf0e10cSrcweir typedef Valuetype value_type; 210*cdf0e10cSrcweir typedef Valuetype& reference; 211*cdf0e10cSrcweir typedef reference index_reference; 212*cdf0e10cSrcweir typedef Valuetype* pointer; 213*cdf0e10cSrcweir typedef vigra::Diff2D difference_type; 214*cdf0e10cSrcweir typedef image_traverser_tag iterator_category; 215*cdf0e10cSrcweir typedef pointer row_iterator; 216*cdf0e10cSrcweir typedef PixelColumnIterator<value_type> column_iterator; 217*cdf0e10cSrcweir 218*cdf0e10cSrcweir typedef int MoveX; 219*cdf0e10cSrcweir typedef StridedArrayIterator< value_type > MoveY; 220*cdf0e10cSrcweir 221*cdf0e10cSrcweir // TODO(F2): direction of iteration (ImageIterator can be made to 222*cdf0e10cSrcweir // run backwards) 223*cdf0e10cSrcweir 224*cdf0e10cSrcweir private: 225*cdf0e10cSrcweir bool equal(PixelIterator const & rhs) const 226*cdf0e10cSrcweir { 227*cdf0e10cSrcweir return (x == rhs.x) && (y == rhs.y); 228*cdf0e10cSrcweir } 229*cdf0e10cSrcweir 230*cdf0e10cSrcweir pointer current() const 231*cdf0e10cSrcweir { 232*cdf0e10cSrcweir return y() + x; 233*cdf0e10cSrcweir } 234*cdf0e10cSrcweir 235*cdf0e10cSrcweir pointer current(int dx, int dy) const 236*cdf0e10cSrcweir { 237*cdf0e10cSrcweir return y(dy) + x+dx; 238*cdf0e10cSrcweir } 239*cdf0e10cSrcweir 240*cdf0e10cSrcweir public: 241*cdf0e10cSrcweir PixelIterator() : 242*cdf0e10cSrcweir x(0), 243*cdf0e10cSrcweir y(0) 244*cdf0e10cSrcweir {} 245*cdf0e10cSrcweir 246*cdf0e10cSrcweir PixelIterator(pointer base, int ystride) : 247*cdf0e10cSrcweir x(0), 248*cdf0e10cSrcweir y(ystride,base) 249*cdf0e10cSrcweir {} 250*cdf0e10cSrcweir 251*cdf0e10cSrcweir bool operator==(PixelIterator const & rhs) const 252*cdf0e10cSrcweir { 253*cdf0e10cSrcweir return equal(rhs); 254*cdf0e10cSrcweir } 255*cdf0e10cSrcweir 256*cdf0e10cSrcweir bool operator!=(PixelIterator const & rhs) const 257*cdf0e10cSrcweir { 258*cdf0e10cSrcweir return !equal(rhs); 259*cdf0e10cSrcweir } 260*cdf0e10cSrcweir 261*cdf0e10cSrcweir difference_type operator-(PixelIterator const & rhs) const 262*cdf0e10cSrcweir { 263*cdf0e10cSrcweir return difference_type(x - rhs.x, y - rhs.y); 264*cdf0e10cSrcweir } 265*cdf0e10cSrcweir 266*cdf0e10cSrcweir MoveX x; 267*cdf0e10cSrcweir MoveY y; 268*cdf0e10cSrcweir 269*cdf0e10cSrcweir PixelIterator & operator+=(difference_type const & s) 270*cdf0e10cSrcweir { 271*cdf0e10cSrcweir x += s.x; 272*cdf0e10cSrcweir y += s.y; 273*cdf0e10cSrcweir return *this; 274*cdf0e10cSrcweir } 275*cdf0e10cSrcweir 276*cdf0e10cSrcweir PixelIterator & operator-=(difference_type const & s) 277*cdf0e10cSrcweir { 278*cdf0e10cSrcweir x -= s.x; 279*cdf0e10cSrcweir y -= s.y; 280*cdf0e10cSrcweir return *this; 281*cdf0e10cSrcweir } 282*cdf0e10cSrcweir 283*cdf0e10cSrcweir PixelIterator operator+(difference_type const & s) const 284*cdf0e10cSrcweir { 285*cdf0e10cSrcweir PixelIterator ret(*this); 286*cdf0e10cSrcweir ret += s; 287*cdf0e10cSrcweir return ret; 288*cdf0e10cSrcweir } 289*cdf0e10cSrcweir 290*cdf0e10cSrcweir PixelIterator operator-(difference_type const & s) const 291*cdf0e10cSrcweir { 292*cdf0e10cSrcweir PixelIterator ret(*this); 293*cdf0e10cSrcweir ret -= s; 294*cdf0e10cSrcweir return ret; 295*cdf0e10cSrcweir } 296*cdf0e10cSrcweir 297*cdf0e10cSrcweir row_iterator rowIterator() const 298*cdf0e10cSrcweir { 299*cdf0e10cSrcweir return row_iterator(y()+x); 300*cdf0e10cSrcweir } 301*cdf0e10cSrcweir 302*cdf0e10cSrcweir column_iterator columnIterator() const 303*cdf0e10cSrcweir { 304*cdf0e10cSrcweir return column_iterator(y,x); 305*cdf0e10cSrcweir } 306*cdf0e10cSrcweir 307*cdf0e10cSrcweir value_type get() const 308*cdf0e10cSrcweir { 309*cdf0e10cSrcweir return *current(); 310*cdf0e10cSrcweir } 311*cdf0e10cSrcweir 312*cdf0e10cSrcweir value_type get(difference_type const & d) const 313*cdf0e10cSrcweir { 314*cdf0e10cSrcweir return *current(d.y, d.x); 315*cdf0e10cSrcweir } 316*cdf0e10cSrcweir 317*cdf0e10cSrcweir void set( value_type v ) const 318*cdf0e10cSrcweir { 319*cdf0e10cSrcweir *current() = v; 320*cdf0e10cSrcweir } 321*cdf0e10cSrcweir 322*cdf0e10cSrcweir void set( value_type v, difference_type const & d ) const 323*cdf0e10cSrcweir { 324*cdf0e10cSrcweir *current(d.y,d.x) = v; 325*cdf0e10cSrcweir } 326*cdf0e10cSrcweir 327*cdf0e10cSrcweir reference operator*() const 328*cdf0e10cSrcweir { 329*cdf0e10cSrcweir return *current(); 330*cdf0e10cSrcweir } 331*cdf0e10cSrcweir 332*cdf0e10cSrcweir pointer operator->() const 333*cdf0e10cSrcweir { 334*cdf0e10cSrcweir return current(); 335*cdf0e10cSrcweir } 336*cdf0e10cSrcweir 337*cdf0e10cSrcweir reference operator[]( const vigra::Diff2D& d ) const 338*cdf0e10cSrcweir { 339*cdf0e10cSrcweir return *current(d.x,d.y); 340*cdf0e10cSrcweir } 341*cdf0e10cSrcweir 342*cdf0e10cSrcweir reference operator()(int dx, int dy) const 343*cdf0e10cSrcweir { 344*cdf0e10cSrcweir return *current(dx,dy); 345*cdf0e10cSrcweir } 346*cdf0e10cSrcweir 347*cdf0e10cSrcweir pointer operator[](int dy) const 348*cdf0e10cSrcweir { 349*cdf0e10cSrcweir return y(dy) + x; 350*cdf0e10cSrcweir } 351*cdf0e10cSrcweir }; 352*cdf0e10cSrcweir 353*cdf0e10cSrcweir } // namespace basebmp 354*cdf0e10cSrcweir 355*cdf0e10cSrcweir #endif /* INCLUDED_BASEBMP_PIXELITERATOR_HXX */ 356