okular/core/misc.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005   by Piotr Szymanski <niedakh@gmail.com>           *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  ***************************************************************************/
   9
  10 #include "core/misc.h"
  11
  12 #include <kdebug.h>
  13
  14 #include "debug_p.h"
  15
  16 using namespace Okular;
  17
  18 class TextSelection::Private
  19 {
  20     public:
  21         int direction;
  22         int it[2];
  23         NormalizedPoint cur[2];
  24 };
  25
  26 TextSelection::TextSelection( const NormalizedPoint & a, const NormalizedPoint & b )
  27     : d( new Private )
  28 {
  29     if (b.y-a.y<0 || (b.y-a.y==0 && b.x-a.x <0))
  30         d->direction = 1;
  31     else
  32         d->direction = 0;
  33
  34     d->cur[0] = a;
  35     d->cur[1] = b;
  36     d->it[d->direction % 2] = -1;
  37     d->it[(d->direction + 1) % 2] = -1;
  38 }
  39
  40 TextSelection::~TextSelection()
  41 {
  42     delete d;
  43 }
  44
  45 void TextSelection::end( const NormalizedPoint & p )
  46 {
  47   // changing direction as in 2b , assuming the bool->int conversion is correct
  48   int dir1 = d->direction;
  49   d->direction = (p.y - d->cur[0].y < 0 || (p.y - d->cur[0].y == 0 && p.x - d->cur[0].x < 0));
  50   if (d->direction != dir1)
  51     kDebug(OkularDebug) << "changing direction in selection";
  52
  53   d->cur[1] = p;
  54 }
  55
  56 void TextSelection::itE( int p )
  57 {
  58     d->it[(d->direction + 1) % 2] = p;
  59 }
  60
  61 void TextSelection::itB( int p )
  62 {
  63     d->it[(d->direction) % 2] = p;
  64 }
  65
  66 int TextSelection::direction() const
  67 {
  68     return d->direction;
  69 }
  70
  71 NormalizedPoint TextSelection::start() const
  72 {
  73     return d->cur[d->direction % 2];
  74 }
  75
  76 NormalizedPoint TextSelection::end() const
  77 {
  78     return d->cur[(d->direction + 1) % 2];
  79 }
  80
  81 int TextSelection::itB() const
  82 {
  83     return d->it[d->direction % 2];
  84 }
  85
  86 int TextSelection::itE() const
  87 {
  88     return d->it[(d->direction + 1) % 2];
  89 }