nel/src/3d/text_context.cpp

   1 // NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
   2 // Copyright (C) 2010-2018  Winch Gate Property Limited
   3 //
   4 // This source file has been modified by the following contributors:
   5 // Copyright (C) 2014-2020  Jan BOON (Kaetemi) <jan.boon@kaetemi.be>
   6 //
   7 // This program is free software: you can redistribute it and/or modify
   8 // it under the terms of the GNU Affero General Public License as
   9 // published by the Free Software Foundation, either version 3 of the
  10 // License, or (at your option) any later version.
  11 //
  12 // This program is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU Affero General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU Affero General Public License
  18 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 #include "std3d.h"
  21
  22 #include "nel/3d/text_context.h"
  23 #include "nel/3d/font_generator.h"
  24
  25 #ifdef DEBUG_NEW
  26 #define new DEBUG_NEW
  27 #endif
  28
  29 namespace NL3D {
  30
  31 // ------------------------------------------------------------------------------------------------
  32 // Constructor
  33 // ------------------------------------------------------------------------------------------------
  34 CTextContext::CTextContext()
  35 {
  36         _Driver = NULL;
  37         _FontManager = NULL;
  38         _FontGen = NULL;
  39
  40         _FontSize = 12;
  41         _Embolden = false;
  42         _Oblique = false;
  43
  44         _Color = NLMISC::CRGBA(0,0,0);
  45
  46         _HotSpot = CComputedString::BottomLeft;
  47
  48         _ScaleX = 1.0f;
  49         _ScaleZ = 1.0f;
  50
  51         _Shaded = false;
  52         _ShadeOutline = false;
  53         _ShadeExtentX = 0.001f;
  54         _ShadeExtentY = 0.001f;
  55         _ShadeColor = NLMISC::CRGBA(0,0,0);
  56
  57         _Keep800x600Ratio= true;
  58
  59         _CacheNbFreePlaces = 0;
  60 }
  61
  62 // ------------------------------------------------------------------------------------------------
  63 CTextContext::~CTextContext()
  64 {
  65         if (_FontGen)
  66                 delete _FontGen;
  67         if (_FontManager)
  68                 _FontManager->invalidate();
  69 }
  70
  71 // ------------------------------------------------------------------------------------------------
  72 uint32 CTextContext::textPush (const char *format, ...)
  73 {
  74         nlassert(_FontGen);
  75
  76         // convert the string.
  77         char *str;
  78         NLMISC_CONVERT_VARGS (str, format, NLMISC::MaxCStringSize);
  79
  80         return textPush(NLMISC::CUtfStringView(str));
  81 }
  82
  83 // ------------------------------------------------------------------------------------------------
  84 uint32 CTextContext::textPush (NLMISC::CUtfStringView sv)
  85 {
  86         nlassert(_FontGen);
  87
  88         if (_CacheNbFreePlaces == 0)
  89         {
  90                 CComputedString csTmp;
  91
  92                 _CacheStrings.push_back (csTmp);
  93                 if (_CacheFreePlaces.empty())
  94                         _CacheFreePlaces.resize (1);
  95                 _CacheFreePlaces[0] = (uint32)_CacheStrings.size()-1;
  96                 _CacheNbFreePlaces = 1;
  97         }
  98
  99         // compute the string.
 100         uint32 index = _CacheFreePlaces[_CacheNbFreePlaces-1];
 101         nlassert (index < _CacheStrings.size());
 102         CComputedString &strToFill = _CacheStrings[index];
 103
 104         _FontManager->computeString (sv, _FontGen, _Color, _FontSize, _Embolden, _Oblique, _Driver, strToFill, _Keep800x600Ratio);
 105         // just compute letters, glyphs are rendered on demand before first draw
 106         //_FontManager->computeStringInfo(str, _FontGen, _Color, _FontSize, _Embolden, _Oblique, _Driver, strToFill, _Keep800x600Ratio);
 107
 108         _CacheNbFreePlaces--;
 109
 110         return index;
 111 }
 112
 113 // ------------------------------------------------------------------------------------------------
 114 void CTextContext::erase (uint32 i)
 115 {
 116         nlassertex ((i < _CacheStrings.size()), ("try to erase an unknown text"));
 117         _CacheStrings[i].LetterColors.clear();
 118         if (_CacheFreePlaces.size() == _CacheNbFreePlaces)
 119         {
 120                 _CacheFreePlaces.push_back (i);
 121         }
 122         else
 123         {
 124                 _CacheFreePlaces[_CacheNbFreePlaces] = i;
 125         }
 126         _CacheNbFreePlaces++;
 127 }
 128
 129
 130 // ------------------------------------------------------------------------------------------------
 131 void CTextContext::clear ()
 132 {
 133         _CacheFreePlaces.clear();
 134         _CacheNbFreePlaces = 0;
 135         _CacheStrings.clear();
 136 }
 137
 138
 139 // ------------------------------------------------------------------------------------------------
 140 void CTextContext::setFontGenerator(const std::string &fontFileName, const std::string &fontExFileName)
 141 {
 142         CFontGenerator *oldFontGen = _FontGen;
 143         _FontGen = new NL3D::CFontGenerator(fontFileName, fontExFileName);
 144         if (oldFontGen) delete oldFontGen;
 145 }
 146
 147 // ------------------------------------------------------------------------------------------------
 148 void CTextContext::setLetterColors(CLetterColors * letterColors, uint index)
 149 {
 150         if(/*index>=0 &&*/ index<_CacheStrings.size())
 151         {
 152                 _CacheStrings[index].LetterColors.clear();
 153                 _CacheStrings[index].LetterColors = *letterColors;
 154         }
 155 }
 156
 157 // ------------------------------------------------------------------------------------------------
 158 bool CTextContext::isSameLetterColors(CLetterColors * letterColors, uint index)
 159 {
 160         if(/*index>=0 &&*/ index<_CacheStrings.size())
 161         {
 162                 CLetterColors & strLetterColors = _CacheStrings[index].LetterColors;
 163                 return strLetterColors.isSameLetterColors(letterColors);
 164         }
 165
 166         return false;
 167 }
 168
 169 } // NL3D