src/client/GLEXT/GLFont2dStorage.cpp

   1 ////////////////////////////////////////////////////////////////////////////////
   2 //    Scorched3D (c) 2000-2009
   3 //
   4 //    This file is part of Scorched3D.
   5 //
   6 //    Scorched3D is free software; you can redistribute it and/or modify
   7 //    it under the terms of the GNU General Public License as published by
   8 //    the Free Software Foundation; either version 2 of the License, or
   9 //    (at your option) any later version.
  10 //
  11 //    Scorched3D is distributed in the hope that it will be useful,
  12 //    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //    GNU General Public License for more details.
  15 //
  16 //    You should have received a copy of the GNU General Public License
  17 //    along with Scorched3D; if not, write to the Free Software
  18 //    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 ////////////////////////////////////////////////////////////////////////////////
  20
  21 #include <GLEXT/GLFont2dStorage.h>
  22 #include <common/DefinesAssert.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25
  26 unsigned int GLFont2dStorage::totalCharacterBlocks_(0);
  27
  28 GLFont2dStorage::CharEntry::CharEntry() :
  29         texture(0), displaylist(0)
  30 {
  31
  32 }
  33
  34 GLFont2dStorage::CharEntry::~CharEntry()
  35 {
  36         if (displaylist != 0) glDeleteLists(displaylist, 1);
  37         if (texture != 0) glDeleteTextures(1, &texture);
  38 }
  39
  40 GLFont2dStorage::StorageBlock::StorageBlock()
  41 {
  42         entries = new CharEntry[256];
  43 }
  44
  45 GLFont2dStorage::StorageBlock::~StorageBlock()
  46 {
  47         delete [] entries;
  48 }
  49
  50 GLFont2dStorage::GLFont2dStorage()
  51 {
  52         blocks_ = new StorageBlock*[40];
  53         for (int i=0; i<40; i++) blocks_[i] = 0;
  54 }
  55
  56 GLFont2dStorage::~GLFont2dStorage()
  57 {
  58         for (int i=0; i<40; i++) delete blocks_[i];
  59         delete [] blocks_;
  60 }
  61
  62 GLFont2dStorage::CharEntry *GLFont2dStorage::getEntry(unsigned int character)
  63 {
  64         unsigned int blockCount = character >> 8;
  65         unsigned int remainderCount = character & 0xFF;
  66
  67         if (blockCount >= 40) return getEntry('?');
  68
  69         // Get storage block
  70         StorageBlock *block = blocks_[blockCount];
  71         if (!block)
  72         {
  73                 block = new StorageBlock();
  74                 blocks_[blockCount] = block;
  75                 totalCharacterBlocks_++;
  76         }
  77
  78         // Get character
  79         CharEntry *entry = &block->entries[remainderCount];
  80         return entry;
  81 }