Source/Text.cpp

   1 /*
   2 Copyright (C) 2003, 2010 - Wolfire Games
   3
   4 This file is part of Lugaru.
   5
   6 Lugaru is free software; you can redistribute it and/or
   7 modify it under the terms of the GNU General Public License
   8 as published by the Free Software Foundation; either version 2
   9 of the License, or (at your option) any later version.
  10
  11 This program 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.
  14
  15 See the GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20 */
  21
  22 /**> HEADER FILES <**/
  23 #include "Text.h"
  24 #include "Game.h"
  25 extern TGAImageRec texture;
  26
  27 void Text::LoadFontTexture(const char *fileName)
  28 {
  29     GLuint              type;
  30
  31     LOGFUNC;
  32
  33     LOG(std::string("Loading font texture...") + fileName);
  34
  35     FontTexture.load(fileName, false, false);
  36     /*
  37         //Load Image
  38         //LoadTGA( fileName );
  39         unsigned char fileNamep[256];
  40         CopyCStringToPascal(fileName,fileNamep);
  41         //Load Image
  42         upload_image( fileNamep ,1);
  43
  44         //Is it valid?
  45         if(1==1){
  46                 //Alpha channel?
  47                 if ( texture.bpp == 24 )
  48                         type = GL_RGB;
  49                 else
  50                         type = GL_RGBA;
  51
  52                 glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
  53
  54                 if(!FontTexture)glGenTextures( 1, &FontTexture );
  55                 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
  56
  57                 glBindTexture( GL_TEXTURE_2D, FontTexture);
  58                 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
  59                 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
  60
  61                 gluBuild2DMipmaps( GL_TEXTURE_2D, type, texture.sizeX, texture.sizeY, type, GL_UNSIGNED_BYTE, texture.data );
  62         }
  63     */
  64     if (base) {
  65         glDeleteLists(base, 512);
  66         base = 0;
  67     }
  68 }
  69
  70 void Text::BuildFont()                                                          // Build Our Font Display List
  71 {
  72     float       cx;                                                                                     // Holds Our X Character Coord
  73     float       cy;                                                                                     // Holds Our Y Character Coord
  74     int loop;
  75
  76     LOGFUNC;
  77
  78     if (base) {
  79         glDeleteLists(base, 512);
  80         base = 0;
  81         //LOG("Font already created...");
  82         //return;
  83     }
  84
  85 //      base=glGenLists(256);                                                           // Creating 256 Display Lists
  86     base = glGenLists(512);                                                             // Creating 256 Display Lists
  87     FontTexture.bind();
  88     for (loop = 0; loop < 512; loop++) {                                        // Loop Through All 256 Lists
  89         if (loop < 256) {
  90             cx = float(loop % 16) / 16.0f;                                              // X Position Of Current Character
  91             cy = float(loop / 16) / 16.0f;                                              // Y Position Of Current Character
  92         } else {
  93             cx = float((loop - 256) % 16) / 16.0f;                                              // X Position Of Current Character
  94             cy = float((loop - 256) / 16) / 16.0f;                                              // Y Position Of Current Character
  95         }
  96         glNewList(base + loop, GL_COMPILE);                             // Start Building A List
  97         glBegin(GL_QUADS);                                                      // Use A Quad For Each Character
  98         glTexCoord2f(cx, 1 - cy - 0.0625f + .001);                      // Texture Coord (Bottom Left)
  99         glVertex2i(0, 0);                                               // Vertex Coord (Bottom Left)
 100         glTexCoord2f(cx + 0.0625f, 1 - cy - 0.0625f + .001);    // Texture Coord (Bottom Right)
 101         glVertex2i(16, 0);                                              // Vertex Coord (Bottom Right)
 102         glTexCoord2f(cx + 0.0625f, 1 - cy - .001);                      // Texture Coord (Top Right)
 103         glVertex2i(16, 16);                                             // Vertex Coord (Top Right)
 104         glTexCoord2f(cx, 1 - cy - +.001);                                       // Texture Coord (Top Left)
 105         glVertex2i(0, 16);                                              // Vertex Coord (Top Left)
 106         glEnd();                                                                        // Done Building Our Quad (Character)
 107         if (loop < 256)
 108             glTranslated(10, 0, 0);                                             // Move To The Right Of The Character
 109         else
 110             glTranslated(8, 0, 0);                                              // Move To The Right Of The Character
 111         glEndList();                                                                    // Done Building The Display List
 112     }                                                                                                   // Loop Until All 256 Are Built
 113 }
 114
 115 void Text::glPrint(float x, float y, const char *string, int set, float size, float width, float height)        // Where The Printing Happens
 116 {
 117     glPrint(x, y, string, set, size, width, height, 0, strlen(string));
 118 }
 119
 120 void Text::_glPrint(float x, float y, const char *string, int set, float size, float width, float height, int start, int end, int offset)       // Where The Printing Happens
 121 {
 122     if (set > 1) {
 123         set = 1;
 124     }
 125     glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
 126     FontTexture.bind();
 127     glDisable(GL_DEPTH_TEST);                                                   // Disables Depth Testing
 128     glDisable(GL_LIGHTING);
 129     glEnable(GL_BLEND);
 130     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 131     glMatrixMode(GL_PROJECTION);                                                // Select The Projection Matrix
 132     glPushMatrix();                                                                             // Store The Projection Matrix
 133     glLoadIdentity();                                                                   // Reset The Projection Matrix
 134     glOrtho(0, width, 0, height, -100, 100);                                            // Set Up An Ortho Screen
 135     glMatrixMode(GL_MODELVIEW);                                                 // Select The Modelview Matrix
 136     glPushMatrix();                                                                             // Store The Modelview Matrix
 137     glLoadIdentity();
 138     glTranslated(x, y, 0);                                                              // Position The Text (0,0 - Bottom Left)
 139     glScalef(size, size, 1);                                                                    // Reset The Modelview Matrix
 140     glListBase(base - 32 + (128 * set) + offset);                                               // Choose The Font Set (0 or 1)
 141     glCallLists(end - start, GL_BYTE, &string[start]);                  // Write The Text To The Screen
 142     glMatrixMode(GL_PROJECTION);                                                // Select The Projection Matrix
 143     glPopMatrix();                                                                              // Restore The Old Projection Matrix
 144     glMatrixMode(GL_MODELVIEW);                                                 // Select The Modelview Matrix
 145     glPopMatrix();                                                                              // Restore The Old Projection Matrix
 146     glEnable(GL_DEPTH_TEST);                                                    // Enables Depth Testing
 147     glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
 148 }
 149
 150 void Text::glPrint(float x, float y, const char *string, int set, float size, float width, float height, int start, int end)    // Where The Printing Happens
 151 {
 152     _glPrint(x, y, string, set, size, width, height, start, end, 0);
 153 }
 154
 155 void Text::glPrintOutline(float x, float y, const char *string, int set, float size, float width, float height) // Where The Printing Happens
 156 {
 157     glPrintOutline(x, y, string, set, size, width, height, 0, strlen(string));
 158 }
 159
 160 void Text::glPrintOutline(float x, float y, const char *string, int set, float size, float width, float height, int start, int end)     // Where The Printing Happens
 161 {
 162     _glPrint(x, y, string, set, size, width, height, start, end, 256);
 163 }
 164 void Text::glPrintOutlined(float x, float y, const char *string, int set, float size, float width, float height)        // Where The Printing Happens
 165 {
 166     glPrintOutlined(1, 1, 1, x, y, string, set, size, width, height);
 167 }
 168
 169 void Text::glPrintOutlined(float r, float g, float b, float x, float y, const char *string, int set, float size, float width, float height)     // Where The Printing Happens
 170 {
 171     glColor4f(0, 0, 0, 1);
 172     glPrintOutline( x - 2 * size,  y - 2 * size, string,  set,  size * 2.5 / 2,  width,  height);
 173     glColor4f(r, g, b, 1);
 174     glPrint( x,  y, string,  set,  size,  width,  height);
 175 }
 176
 177 Text::Text()
 178 {
 179     base = 0;
 180 }
 181 Text::~Text()
 182 {
 183     if (base) {
 184         glDeleteLists(base, 512);
 185         base = 0;
 186     }
 187     FontTexture.destroy();
 188 }
 189