[3655] | 1 | /* |
---|
| 2 | orxonox - the future of 3D-vertical-scrollers |
---|
| 3 | |
---|
| 4 | Copyright (C) 2004 orx |
---|
| 5 | |
---|
| 6 | This program 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, or (at your option) |
---|
| 9 | any later version. |
---|
| 10 | |
---|
| 11 | ### File Specific: |
---|
[3766] | 12 | main-programmer: Benjamin Grauer |
---|
[3655] | 13 | co-programmer: ... |
---|
[3766] | 14 | |
---|
| 15 | for some fonts and licenses visit: =http://www.dafont.com/en/font.php= |
---|
| 16 | |
---|
| 17 | !! IMPORTANT !! When using ttf fonts clear the license issues prior to |
---|
| 18 | adding them to orxonox. This is really important, because we do not |
---|
[3767] | 19 | want to offend anyone. |
---|
[3655] | 20 | */ |
---|
| 21 | |
---|
[3766] | 22 | #define DEBUG_SPECIAL_MODULE DEBUG_MODULE_FONT |
---|
[3655] | 23 | |
---|
[3766] | 24 | #include "text_engine.h" |
---|
[3655] | 25 | |
---|
| 26 | using namespace std; |
---|
| 27 | |
---|
[3766] | 28 | #include <stdlib.h> |
---|
| 29 | #include <stdio.h> |
---|
| 30 | #include <string.h> |
---|
[3655] | 31 | |
---|
[3766] | 32 | #include "graphics_engine.h" |
---|
| 33 | #include "p_node.h" |
---|
| 34 | #include "vector.h" |
---|
| 35 | #include "debug.h" |
---|
| 36 | |
---|
| 37 | |
---|
| 38 | //////////// |
---|
[3768] | 39 | /// TEXT /// |
---|
[3766] | 40 | //////////// |
---|
| 41 | |
---|
[3768] | 42 | Text::Text(void) |
---|
| 43 | { |
---|
| 44 | |
---|
| 45 | } |
---|
| 46 | |
---|
| 47 | Text::~Text(void) |
---|
| 48 | { |
---|
| 49 | |
---|
| 50 | } |
---|
| 51 | |
---|
| 52 | |
---|
| 53 | void Text::setBindNode(PNode* bindNode) |
---|
| 54 | { |
---|
| 55 | this->bindNode = bindNode; |
---|
| 56 | } |
---|
| 57 | |
---|
[3655] | 58 | /** |
---|
[3768] | 59 | \brief sets the Type of this Text |
---|
| 60 | \param type the type to set. |
---|
| 61 | */ |
---|
| 62 | void Text::setType(int type) |
---|
| 63 | { |
---|
| 64 | this->type = type; |
---|
| 65 | } |
---|
| 66 | |
---|
| 67 | |
---|
| 68 | /** |
---|
| 69 | \brief Sets a new Text to the font |
---|
| 70 | \param text the new text to set |
---|
| 71 | */ |
---|
| 72 | void Text::setText(const char* text) |
---|
| 73 | { |
---|
| 74 | if (this->text) |
---|
| 75 | delete []this->text; |
---|
| 76 | this->text = new char[strlen(text)+1]; |
---|
| 77 | strcpy(this->text, text); |
---|
| 78 | } |
---|
| 79 | |
---|
| 80 | /** |
---|
| 81 | \brief sets a Position. |
---|
| 82 | \param x the x-position in pixels from the left border |
---|
| 83 | \param y the y-position in pixels from the top border |
---|
| 84 | */ |
---|
| 85 | void Text::setPosition(int x, int y) |
---|
| 86 | { |
---|
| 87 | this->posSize.x = x; |
---|
| 88 | this->posSize.y = y; |
---|
| 89 | } |
---|
| 90 | |
---|
| 91 | |
---|
| 92 | /** |
---|
| 93 | \brief draws the Font |
---|
| 94 | \todo FIX this is to slow/static |
---|
| 95 | */ |
---|
| 96 | void Text::draw(void) |
---|
| 97 | { |
---|
| 98 | // storing all the Transformation Matrices. |
---|
| 99 | |
---|
| 100 | GLdouble modMat[16]; |
---|
| 101 | GLdouble projMat[16]; |
---|
| 102 | GLint viewPort[4]; |
---|
| 103 | glGetDoublev(GL_PROJECTION_MATRIX, projMat); |
---|
| 104 | glGetDoublev(GL_MODELVIEW_MATRIX, modMat); |
---|
| 105 | glGetIntegerv(GL_VIEWPORT, viewPort); |
---|
| 106 | // this->enter2DMode(); |
---|
| 107 | |
---|
| 108 | |
---|
| 109 | // setting the Position of this Text. |
---|
| 110 | Vector pos; |
---|
| 111 | if (this->bindNode) |
---|
| 112 | { |
---|
| 113 | GLdouble x = this->bindNode->getAbsCoor().x; |
---|
| 114 | GLdouble y = this->bindNode->getAbsCoor().y; |
---|
| 115 | GLdouble z = this->bindNode->getAbsCoor().z; |
---|
| 116 | GLdouble tmp[3]; |
---|
| 117 | gluProject(x, y, z, modMat, projMat, viewPort, tmp, tmp+1, tmp+2); |
---|
| 118 | printf("test %f %f %f,\n", tmp[0], tmp[1], tmp[2]); |
---|
| 119 | pos.x = tmp[0] + this->posSize.x; |
---|
| 120 | pos.y = GraphicsEngine::getInstance()->getResolutionY() - tmp[1] + this->posSize.y; |
---|
| 121 | pos.z = tmp[2]; |
---|
| 122 | } |
---|
| 123 | else |
---|
| 124 | { |
---|
| 125 | pos.x = this->posSize.x; |
---|
| 126 | pos.y = this->posSize.y; |
---|
| 127 | pos.z = 0; |
---|
| 128 | } |
---|
| 129 | |
---|
| 130 | // drawing this Text. |
---|
| 131 | if(type == TEXT_STATIC) |
---|
| 132 | { |
---|
| 133 | glBindTexture(GL_TEXTURE_2D, this->texture); |
---|
| 134 | glEnable(GL_TEXTURE_2D); |
---|
| 135 | glBegin(GL_QUADS); |
---|
| 136 | |
---|
| 137 | glTexCoord2f(this->texCoord.minU, this->texCoord.minV); |
---|
| 138 | glVertex2i(pos.x, pos.y ); |
---|
| 139 | |
---|
| 140 | glTexCoord2f(this->texCoord.maxU, this->texCoord.minV); |
---|
| 141 | glVertex2i(pos.x + this->posSize.w, pos.y ); |
---|
| 142 | |
---|
| 143 | glTexCoord2f(this->texCoord.maxU, this->texCoord.maxV); |
---|
| 144 | glVertex2i(pos.x + this->posSize.w, pos.y + this->posSize.h); |
---|
| 145 | |
---|
| 146 | glTexCoord2f(this->texCoord.minU, this->texCoord.maxV); |
---|
| 147 | glVertex2i(pos.x, pos.y + this->posSize.h); |
---|
| 148 | |
---|
| 149 | glEnd(); |
---|
| 150 | } |
---|
| 151 | else //(if type & TEXT_DYNAMIC) |
---|
| 152 | { |
---|
| 153 | Glyph** glyphArray = this->font->getGlyphArray(); |
---|
| 154 | glBindTexture(GL_TEXTURE_2D, this->font->getFastTextureID()); |
---|
| 155 | // glEnable(GL_TEXTURE_2D); |
---|
| 156 | glTranslatef(pos.x, pos.y, 0); |
---|
| 157 | |
---|
| 158 | printf("%d, %d\n", this->font->getFastTextureID(), glyphArray[65]->displayList); |
---|
| 159 | char* tmpText = this->text; |
---|
| 160 | while (*tmpText != '\0') |
---|
| 161 | { |
---|
| 162 | if(glyphArray[*tmpText]) |
---|
| 163 | { |
---|
| 164 | glCallList(glyphArray[*tmpText]->displayList); |
---|
| 165 | glTranslatef(glyphArray[*tmpText]->width, 0, 0); |
---|
| 166 | } |
---|
| 167 | tmpText++; |
---|
| 168 | } |
---|
| 169 | } |
---|
| 170 | // this->leave2DMode(); |
---|
| 171 | } |
---|
| 172 | |
---|
| 173 | |
---|
| 174 | |
---|
| 175 | //////////// |
---|
| 176 | /// FONT /// |
---|
| 177 | //////////// |
---|
| 178 | /** |
---|
[3766] | 179 | \brief constructs a Font |
---|
| 180 | \param fontFile the File to load the font from |
---|
[3767] | 181 | \param fontSize the Size of the Font in Pixels |
---|
| 182 | \param r Red value of the Font. |
---|
| 183 | \param g Green value of the Font. |
---|
| 184 | \param b Blue value of the Font. |
---|
[3766] | 185 | */ |
---|
[3767] | 186 | Font::Font(const char* fontFile, unsigned int fontSize, Uint8 r, Uint8 g, Uint8 b) |
---|
[3766] | 187 | { |
---|
[3767] | 188 | if (!TTF_WasInit()) |
---|
[3766] | 189 | TextEngine::enableFonts(); |
---|
| 190 | |
---|
| 191 | // setting default values. |
---|
| 192 | this->font = NULL; |
---|
| 193 | this->fontFile = NULL; |
---|
| 194 | this->glyphArray = NULL; |
---|
| 195 | this->fastTextureID = 0; |
---|
| 196 | |
---|
| 197 | this->currentText = new Text; |
---|
| 198 | |
---|
| 199 | this->currentText->bindNode = NULL; |
---|
| 200 | this->currentText->text = NULL; |
---|
| 201 | this->currentText->texture = 0; |
---|
| 202 | |
---|
| 203 | this->setSize(fontSize); |
---|
[3768] | 204 | this->setStyle(TTF_STYLE_NORMAL); |
---|
[3766] | 205 | this->setFont(fontFile); |
---|
| 206 | |
---|
| 207 | |
---|
[3768] | 208 | this->currentText->setType(TEXT_DYNAMIC); |
---|
| 209 | this->currentText->setPosition(0, 0); |
---|
| 210 | |
---|
| 211 | this->currentText->setText(FONT_DEFAULT_TEXT); |
---|
[3766] | 212 | |
---|
[3767] | 213 | this->setColor(r, g, b); |
---|
[3766] | 214 | |
---|
| 215 | this->createTexture(); |
---|
| 216 | |
---|
| 217 | this->fastTextureID = this->createFastTexture(); |
---|
| 218 | } |
---|
| 219 | |
---|
| 220 | /** |
---|
[3767] | 221 | \brief destructs a font |
---|
| 222 | */ |
---|
| 223 | Font::~Font(void) |
---|
| 224 | { |
---|
| 225 | delete this->currentText; |
---|
| 226 | |
---|
| 227 | if (this->glyphArray) |
---|
| 228 | { |
---|
| 229 | for (int i = 0; i < FONT_HIGHEST_KNOWN_CHAR; i++) |
---|
| 230 | delete this->glyphArray[i]; |
---|
| 231 | delete []this->glyphArray; |
---|
| 232 | } |
---|
| 233 | |
---|
| 234 | if (this->font) |
---|
| 235 | TTF_CloseFont(this->font); |
---|
| 236 | } |
---|
| 237 | |
---|
| 238 | /** |
---|
[3766] | 239 | \brief sets The Font. |
---|
| 240 | \param fontFile The file containing the font. |
---|
| 241 | \returns true if loaded, false if something went wrong, or if a font was loaded before. |
---|
| 242 | */ |
---|
| 243 | bool Font::setFont(const char* fontFile) |
---|
| 244 | { |
---|
| 245 | if (!this->fontFile) |
---|
| 246 | { |
---|
| 247 | this->fontFile = new char[strlen(fontFile)+1]; |
---|
| 248 | strcpy(this->fontFile, fontFile); |
---|
| 249 | |
---|
| 250 | this->font = TTF_OpenFont(this->fontFile, this->fontSize); |
---|
| 251 | if(!this->font) |
---|
| 252 | { |
---|
| 253 | PRINTF(1)("TTF_OpenFont: %s\n", TTF_GetError()); |
---|
| 254 | return false; |
---|
| 255 | } |
---|
| 256 | return true; |
---|
| 257 | } |
---|
| 258 | else |
---|
| 259 | { |
---|
| 260 | PRINTF(2)("Font already initialized, unable to change it now.\n"); |
---|
| 261 | return false; |
---|
| 262 | } |
---|
| 263 | } |
---|
| 264 | |
---|
| 265 | /** |
---|
| 266 | \brief sets a specific renderStyle |
---|
| 267 | \param renderStyle the Style to render: a char-array containing: |
---|
| 268 | i: italic, b: bold, u, underline |
---|
| 269 | */ |
---|
| 270 | void Font::setStyle(char* renderStyle) |
---|
| 271 | { |
---|
[3768] | 272 | this->renderStyle = TTF_STYLE_NORMAL; |
---|
[3766] | 273 | |
---|
| 274 | for (int i = 0; i < strlen(renderStyle); i++) |
---|
| 275 | if (strncmp(renderStyle+i, "b", 1) == 0) |
---|
[3768] | 276 | this->renderStyle |= TTF_STYLE_BOLD; |
---|
[3766] | 277 | else if (strncmp(renderStyle+i, "i", 1) == 0) |
---|
[3768] | 278 | this->renderStyle |= TTF_STYLE_ITALIC; |
---|
[3766] | 279 | else if (strncmp(renderStyle+i, "u", 1) == 0) |
---|
[3768] | 280 | this->renderStyle |= TTF_STYLE_UNDERLINE; |
---|
[3766] | 281 | |
---|
| 282 | if (this->font) |
---|
[3768] | 283 | TTF_SetFontStyle(this->font, this->renderStyle); |
---|
[3766] | 284 | else |
---|
| 285 | PRINTF(2)("Font was not initialized, please do so before setting the Font-Style.\n"); |
---|
| 286 | } |
---|
| 287 | |
---|
[3768] | 288 | |
---|
| 289 | |
---|
[3766] | 290 | /** |
---|
| 291 | \brief Sets a new Size to the font |
---|
| 292 | \param fontSize The new Size in pixels. |
---|
| 293 | */ |
---|
| 294 | void Font::setSize(unsigned int fontSize) |
---|
| 295 | { |
---|
| 296 | this->fontSize = fontSize; |
---|
| 297 | } |
---|
| 298 | |
---|
| 299 | /** |
---|
| 300 | \brief sets a new color to the font |
---|
| 301 | \param r Red |
---|
| 302 | \param g Green |
---|
| 303 | \param b Blue |
---|
| 304 | */ |
---|
| 305 | void Font::setColor(Uint8 r, Uint8 g, Uint8 b) |
---|
| 306 | { |
---|
| 307 | this->currentText->color.r = r; |
---|
| 308 | this->currentText->color.g = g; |
---|
| 309 | this->currentText->color.b = b; |
---|
| 310 | } |
---|
| 311 | |
---|
| 312 | /** |
---|
| 313 | \brief creates a texture out of the given parameters |
---|
| 314 | |
---|
| 315 | this has to be called every time by the user, to if changes were made. |
---|
| 316 | */ |
---|
| 317 | void Font::createTexture(void) |
---|
| 318 | { |
---|
| 319 | SDL_Surface* tmpSurf; |
---|
| 320 | if (this->currentText->texture) |
---|
| 321 | glDeleteTextures(1, &this->currentText->texture); |
---|
| 322 | tmpSurf = TTF_RenderText_Blended(this->font, |
---|
| 323 | this->currentText->text, |
---|
| 324 | this->currentText->color); |
---|
| 325 | if (tmpSurf) |
---|
| 326 | this->currentText->texture = loadTexture(tmpSurf, &this->currentText->texCoord); |
---|
| 327 | |
---|
[3768] | 328 | this->currentText->posSize.w = tmpSurf->w; |
---|
| 329 | this->currentText->posSize.h = tmpSurf->h; |
---|
[3766] | 330 | SDL_FreeSurface(tmpSurf); |
---|
| 331 | } |
---|
| 332 | |
---|
| 333 | |
---|
| 334 | /** |
---|
| 335 | \returns the maximum height of the Font, if the font was initialized, 0 otherwise |
---|
| 336 | */ |
---|
| 337 | int Font::getMaxHeight(void) |
---|
| 338 | { |
---|
| 339 | if (this->font) |
---|
| 340 | return TTF_FontHeight(this->font); |
---|
| 341 | else |
---|
| 342 | return 0; |
---|
| 343 | } |
---|
| 344 | |
---|
| 345 | /** |
---|
| 346 | \returns the maximum ascent of the Font, if the font was initialized, 0 otherwise |
---|
| 347 | |
---|
| 348 | the ascent is the pixels of the font above the baseline |
---|
| 349 | */ |
---|
| 350 | int Font::getMaxAscent(void) |
---|
| 351 | { |
---|
| 352 | if (this->font) |
---|
| 353 | return TTF_FontAscent(this->font); |
---|
| 354 | else |
---|
| 355 | return 0; |
---|
| 356 | } |
---|
| 357 | |
---|
| 358 | /** |
---|
| 359 | \returns the maximum descent of the Font, if the font was initialized, 0 otherwise |
---|
| 360 | |
---|
| 361 | the descent is the pixels of the font below the baseline |
---|
| 362 | */ |
---|
| 363 | int Font::getMaxDescent(void) |
---|
| 364 | { |
---|
| 365 | if (this->font) |
---|
| 366 | return TTF_FontDescent(this->font); |
---|
| 367 | else |
---|
| 368 | return 0; |
---|
| 369 | } |
---|
| 370 | |
---|
| 371 | /** |
---|
| 372 | \param character The character to get info about. |
---|
| 373 | \returns a Glyph struct of a character. This Glyph is a pointer, |
---|
| 374 | and MUST be deleted by the user.. |
---|
| 375 | |
---|
| 376 | This only works for horizontal fonts. see |
---|
| 377 | http://freetype.sourceforge.net/freetype2/docs/tutorial/step2.html |
---|
| 378 | for more info about vertical Fonts |
---|
| 379 | */ |
---|
| 380 | Glyph* Font::getGlyphMetrics(Uint16 character) |
---|
| 381 | { |
---|
| 382 | Glyph* rg = new Glyph; |
---|
| 383 | rg->character = character; |
---|
| 384 | TTF_GlyphMetrics(this->font, rg->character, |
---|
| 385 | &rg->minX, &rg->maxX, |
---|
| 386 | &rg->minY, &rg->maxY, |
---|
| 387 | &rg->advance); |
---|
| 388 | rg->height = rg->maxY - rg->minY; |
---|
| 389 | rg->width = rg->maxX - rg->minX; |
---|
| 390 | rg->bearingX = (rg->advance - rg->width) / 2; |
---|
| 391 | rg->bearingY = rg->maxY; |
---|
| 392 | return rg; |
---|
| 393 | } |
---|
| 394 | |
---|
| 395 | /** |
---|
| 396 | \brief entering 2D Mode |
---|
| 397 | |
---|
| 398 | this is a GL-Projection-mode, that is orthogonal, for placing the font in fron of everything else |
---|
| 399 | */ |
---|
| 400 | void Font::enter2DMode(void) |
---|
| 401 | { |
---|
| 402 | SDL_Surface *screen = SDL_GetVideoSurface(); |
---|
| 403 | |
---|
| 404 | /* Note, there may be other things you need to change, |
---|
| 405 | depending on how you have your OpenGL state set up. |
---|
| 406 | */ |
---|
| 407 | glPushAttrib(GL_ENABLE_BIT); |
---|
| 408 | glDisable(GL_DEPTH_TEST); |
---|
| 409 | glDisable(GL_CULL_FACE); |
---|
| 410 | glDisable(GL_LIGHTING); // will be set back when leaving 2D-mode |
---|
| 411 | glEnable(GL_TEXTURE_2D); |
---|
| 412 | |
---|
| 413 | /* This allows alpha blending of 2D textures with the scene */ |
---|
| 414 | glEnable(GL_BLEND); |
---|
| 415 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
---|
| 416 | |
---|
| 417 | glViewport(0, 0, screen->w, screen->h); |
---|
| 418 | |
---|
| 419 | glMatrixMode(GL_PROJECTION); |
---|
| 420 | glPushMatrix(); |
---|
| 421 | glLoadIdentity(); |
---|
| 422 | |
---|
| 423 | glOrtho(0.0, (GLdouble)screen->w, (GLdouble)screen->h, 0.0, 0.0, 1.0); |
---|
| 424 | |
---|
| 425 | glMatrixMode(GL_MODELVIEW); |
---|
| 426 | glPushMatrix(); |
---|
| 427 | glLoadIdentity(); |
---|
| 428 | |
---|
| 429 | glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
---|
| 430 | } |
---|
| 431 | |
---|
| 432 | /** |
---|
| 433 | \brief leaves the 2DMode again also \see Font::enter2DMode(void) |
---|
| 434 | */ |
---|
| 435 | void Font::leave2DMode(void) |
---|
| 436 | { |
---|
| 437 | glMatrixMode(GL_MODELVIEW); |
---|
| 438 | glPopMatrix(); |
---|
| 439 | |
---|
| 440 | glMatrixMode(GL_PROJECTION); |
---|
| 441 | glPopMatrix(); |
---|
| 442 | |
---|
| 443 | glPopAttrib(); |
---|
| 444 | } |
---|
| 445 | |
---|
| 446 | |
---|
| 447 | GLuint Font::createFastTexture(void) |
---|
| 448 | { |
---|
| 449 | /* interesting GLYPHS: |
---|
| 450 | * 33-47: Special Characters. |
---|
| 451 | * 48-57: 0-9 |
---|
| 452 | * 58-63: some more special chars (minor) |
---|
| 453 | * 65-90: A-Z |
---|
| 454 | * 97-122: a-z |
---|
| 455 | */ |
---|
| 456 | int numberOfGlyphs = 90; |
---|
| 457 | |
---|
| 458 | this->initGlyphs(33, numberOfGlyphs); |
---|
| 459 | |
---|
| 460 | int rectSize = this->findOptimalFastTextureSize(); |
---|
| 461 | |
---|
| 462 | // setting default values. (maybe not needed afterwards) |
---|
| 463 | SDL_Color tmpColor; tmpColor.r = tmpColor.g = tmpColor.b = 0; |
---|
| 464 | // Surface definition. |
---|
| 465 | SDL_Rect tmpRect; // this represents a Rectangle for blitting. |
---|
| 466 | SDL_Surface* tmpSurf = SDL_CreateRGBSurface(SDL_SWSURFACE, |
---|
| 467 | rectSize, rectSize, |
---|
| 468 | 32, |
---|
| 469 | #if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ |
---|
| 470 | 0x000000FF, |
---|
| 471 | 0x0000FF00, |
---|
| 472 | 0x00FF0000, |
---|
| 473 | 0xFF000000 |
---|
| 474 | #else |
---|
| 475 | 0xFF000000, |
---|
| 476 | 0x00FF0000, |
---|
| 477 | 0x0000FF00, |
---|
| 478 | 0x000000FF |
---|
| 479 | #endif |
---|
| 480 | ); |
---|
| 481 | tmpRect.x = 0; tmpRect.y = 0; tmpRect.w = tmpSurf->w; tmpRect.h = tmpSurf->h; |
---|
| 482 | SDL_SetClipRect(tmpSurf, &tmpRect); |
---|
| 483 | int maxLineHeight = 0; |
---|
| 484 | |
---|
| 485 | // all the interessting Glyphs |
---|
| 486 | for (int i = 33; i <= 122; i++) |
---|
| 487 | { |
---|
| 488 | SDL_Surface* glyphSurf = NULL; |
---|
| 489 | Glyph* tmpGlyph; |
---|
| 490 | |
---|
| 491 | if (tmpGlyph = this->glyphArray[i]) |
---|
| 492 | { |
---|
| 493 | if (tmpGlyph->height > maxLineHeight) |
---|
| 494 | maxLineHeight = tmpGlyph->height; |
---|
| 495 | |
---|
| 496 | if (tmpRect.x+tmpGlyph->width > tmpSurf->w) |
---|
| 497 | { |
---|
| 498 | tmpRect.x = 0; |
---|
| 499 | tmpRect.y = tmpRect.y + maxLineHeight + 1; |
---|
| 500 | maxLineHeight = 0; |
---|
| 501 | } |
---|
| 502 | if (tmpRect.y + maxLineHeight > tmpSurf->h) |
---|
| 503 | { |
---|
| 504 | PRINTF(1)("Protection, so font cannot write over the boundraries error (this should not heappen\n"); |
---|
| 505 | break; |
---|
| 506 | } |
---|
| 507 | // reading in the new Glyph |
---|
| 508 | //glyphSurf = TTF_RenderGlyph_Shaded(this->font, i, this->currentText->color, tmpColor); |
---|
| 509 | glyphSurf = TTF_RenderGlyph_Blended(this->font, i, this->currentText->color); |
---|
| 510 | if( glyphSurf ) |
---|
| 511 | { |
---|
| 512 | |
---|
| 513 | SDL_SetAlpha(glyphSurf, 0, 0); |
---|
| 514 | |
---|
| 515 | SDL_BlitSurface(glyphSurf, NULL, tmpSurf, &tmpRect); |
---|
| 516 | TexCoord tmpTexCoord; |
---|
| 517 | tmpTexCoord.minU = (float)tmpRect.x/(float)tmpSurf->w; |
---|
| 518 | tmpTexCoord.maxU = (float)(tmpRect.x+tmpGlyph->width)/(float)tmpSurf->w; |
---|
| 519 | tmpTexCoord.minV = (float)tmpRect.y/(float)tmpSurf->w; |
---|
| 520 | tmpTexCoord.maxV = (float)(tmpRect.y+tmpGlyph->height)/(float)tmpSurf->w; |
---|
| 521 | tmpGlyph->displayList = glGenLists(1); |
---|
| 522 | |
---|
| 523 | glNewList(tmpGlyph->displayList, GL_COMPILE); |
---|
| 524 | glBegin(GL_QUADS); |
---|
| 525 | glTexCoord2f(tmpTexCoord.minU, tmpTexCoord.minV); |
---|
| 526 | glVertex2d(0, 0); |
---|
| 527 | glTexCoord2f(tmpTexCoord.minU, tmpTexCoord.maxV); |
---|
| 528 | glVertex2d(0, tmpGlyph->height); |
---|
| 529 | glTexCoord2f(tmpTexCoord.maxU, tmpTexCoord.maxV); |
---|
| 530 | glVertex2d(tmpGlyph->width, tmpGlyph->height); |
---|
| 531 | glTexCoord2f(tmpTexCoord.maxU, tmpTexCoord.minV); |
---|
| 532 | glVertex2d(tmpGlyph->width, 0); |
---|
| 533 | glEnd(); |
---|
| 534 | glEndList(); |
---|
| 535 | SDL_FreeSurface(glyphSurf); |
---|
| 536 | |
---|
| 537 | tmpRect.x += tmpGlyph->width + 1; |
---|
| 538 | |
---|
| 539 | // Outputting Glyphs to BMP-files. |
---|
| 540 | /* |
---|
| 541 | char outname[64]; |
---|
| 542 | if (i < 10) |
---|
| 543 | sprintf( outname, "glyph-00%d.bmp", i ); |
---|
| 544 | else if (i <100) |
---|
| 545 | sprintf( outname, "glyph-0%d.bmp", i ); |
---|
| 546 | else |
---|
| 547 | sprintf( outname, "glyph-%d.bmp", i ); |
---|
| 548 | SDL_SaveBMP(tmpSurf, outname); |
---|
| 549 | */ |
---|
| 550 | } |
---|
| 551 | } |
---|
| 552 | } |
---|
| 553 | GLuint texture; |
---|
| 554 | glGenTextures(1, &texture); |
---|
| 555 | glBindTexture(GL_TEXTURE_2D, texture); |
---|
| 556 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
---|
| 557 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
---|
| 558 | glTexImage2D(GL_TEXTURE_2D, |
---|
| 559 | 0, |
---|
| 560 | GL_RGBA, |
---|
| 561 | tmpSurf->w, tmpSurf->h, |
---|
| 562 | 0, |
---|
| 563 | GL_RGBA, |
---|
| 564 | GL_UNSIGNED_BYTE, |
---|
| 565 | tmpSurf->pixels); |
---|
| 566 | SDL_FreeSurface(tmpSurf); |
---|
| 567 | return texture; |
---|
| 568 | } |
---|
| 569 | |
---|
| 570 | /** |
---|
| 571 | \brief Loads a Font from an SDL_surface into a texture. |
---|
| 572 | \param surface The surface to make the texture of |
---|
| 573 | \param texCoord The texture coordinates of the 4 corners of the texture |
---|
| 574 | \returns the ID of the texture |
---|
| 575 | */ |
---|
| 576 | GLuint Font::loadTexture(SDL_Surface *surface, TexCoord* texCoord) |
---|
| 577 | { |
---|
| 578 | GLuint texture; |
---|
| 579 | int w, h; |
---|
| 580 | SDL_Surface *image; |
---|
| 581 | SDL_Rect area; |
---|
| 582 | Uint32 saved_flags; |
---|
| 583 | Uint8 saved_alpha; |
---|
| 584 | |
---|
| 585 | /* Use the surface width and height expanded to powers of 2 */ |
---|
| 586 | w = powerOfTwo(surface->w); |
---|
| 587 | h = powerOfTwo(surface->h); |
---|
| 588 | if (texCoord) |
---|
| 589 | { |
---|
| 590 | texCoord->minU = 0.0f; |
---|
| 591 | texCoord->minV = 0.0f; |
---|
| 592 | texCoord->maxU = (GLfloat)surface->w / w; |
---|
| 593 | texCoord->maxV = (GLfloat)surface->h / h; |
---|
| 594 | } |
---|
| 595 | image = SDL_CreateRGBSurface(SDL_SWSURFACE, |
---|
| 596 | w, h, |
---|
| 597 | 32, |
---|
| 598 | #if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ |
---|
| 599 | 0x000000FF, |
---|
| 600 | 0x0000FF00, |
---|
| 601 | 0x00FF0000, |
---|
| 602 | 0xFF000000 |
---|
| 603 | #else |
---|
| 604 | 0xFF000000, |
---|
| 605 | 0x00FF0000, |
---|
| 606 | 0x0000FF00, |
---|
| 607 | 0x000000FF |
---|
| 608 | #endif |
---|
| 609 | ); |
---|
| 610 | if ( image == NULL ) { |
---|
| 611 | return 0; |
---|
| 612 | } |
---|
| 613 | |
---|
| 614 | /* Save the alpha blending attributes */ |
---|
| 615 | saved_flags = surface->flags&(SDL_SRCALPHA|SDL_RLEACCELOK); |
---|
| 616 | saved_alpha = surface->format->alpha; |
---|
| 617 | if ( (saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { |
---|
| 618 | SDL_SetAlpha(surface, 0, 0); |
---|
| 619 | } |
---|
| 620 | |
---|
| 621 | /* Copy the surface into the GL texture image */ |
---|
| 622 | area.x = 0; |
---|
| 623 | area.y = 0; |
---|
| 624 | area.w = surface->w; |
---|
| 625 | area.h = surface->h; |
---|
| 626 | SDL_BlitSurface(surface, &area, image, &area); |
---|
| 627 | |
---|
| 628 | /* Restore the alpha blending attributes */ |
---|
| 629 | if ( (saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { |
---|
| 630 | SDL_SetAlpha(surface, saved_flags, saved_alpha); |
---|
| 631 | } |
---|
| 632 | |
---|
| 633 | /* Create an OpenGL texture for the image */ |
---|
| 634 | glGenTextures(1, &texture); |
---|
| 635 | glBindTexture(GL_TEXTURE_2D, texture); |
---|
| 636 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
---|
| 637 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
---|
| 638 | glTexImage2D(GL_TEXTURE_2D, |
---|
| 639 | 0, |
---|
| 640 | GL_RGBA, |
---|
| 641 | w, h, |
---|
| 642 | 0, |
---|
| 643 | GL_RGBA, |
---|
| 644 | GL_UNSIGNED_BYTE, |
---|
| 645 | image->pixels); |
---|
| 646 | SDL_FreeSurface(image); /* No longer needed */ |
---|
| 647 | |
---|
| 648 | return texture; |
---|
| 649 | } |
---|
| 650 | |
---|
| 651 | /** |
---|
| 652 | \brief stores Glyph Metrics in an Array. |
---|
| 653 | \param from The Glyph to start from. |
---|
| 654 | \param count The number of Glyphs to start From. |
---|
| 655 | */ |
---|
| 656 | void Font::initGlyphs(Uint16 from, Uint16 count) |
---|
| 657 | { |
---|
| 658 | /* initialize the Array, and set all its entries to NULL |
---|
| 659 | * only if the Glyph-array has not been initialized |
---|
| 660 | */ |
---|
| 661 | if (!this->glyphArray) |
---|
| 662 | { |
---|
| 663 | this->glyphArray = new Glyph*[FONT_HIGHEST_KNOWN_CHAR]; |
---|
| 664 | for (int i = 0; i < FONT_HIGHEST_KNOWN_CHAR; i++) |
---|
| 665 | this->glyphArray[i] = NULL; |
---|
| 666 | } |
---|
| 667 | |
---|
| 668 | Uint16 lastGlyph = from + count; |
---|
| 669 | |
---|
| 670 | for (int i = from; i <= lastGlyph; i++) |
---|
| 671 | { |
---|
| 672 | // setting up all the Glyphs we like. |
---|
| 673 | glyphArray[i] = getGlyphMetrics(i); |
---|
| 674 | } |
---|
| 675 | return; |
---|
| 676 | } |
---|
| 677 | |
---|
| 678 | /** |
---|
| 679 | \returns the optimal size to use as the texture size |
---|
| 680 | |
---|
| 681 | \todo: this algorithm can be a lot more faster, althought it does |
---|
| 682 | not really matter within the init-context, and 128 glyphs. |
---|
| 683 | |
---|
| 684 | This function searches for a 2^n sizes texture-size, this is for |
---|
| 685 | openGL-version < 1.2 compatibility. and because it is realy easy like this. |
---|
| 686 | */ |
---|
| 687 | int Font::findOptimalFastTextureSize(void) |
---|
| 688 | { |
---|
| 689 | int i; |
---|
| 690 | int x,y; // the counters |
---|
| 691 | int maxLineHeight; |
---|
| 692 | int size = 32; // starting Value, we have to start somewhere 32 seems reasonable. |
---|
| 693 | bool sizeOK = false; |
---|
| 694 | Glyph* tmpGlyph; |
---|
| 695 | |
---|
| 696 | while (!sizeOK) |
---|
| 697 | { |
---|
| 698 | x = 0; y = 0; |
---|
| 699 | maxLineHeight = 0; |
---|
| 700 | for (i = 0; i < FONT_HIGHEST_KNOWN_CHAR; i++) |
---|
| 701 | { |
---|
| 702 | if(tmpGlyph = this->glyphArray[i]) |
---|
| 703 | { |
---|
| 704 | // getting the height of the highest Glyph in the Line. |
---|
| 705 | if (tmpGlyph->height > maxLineHeight) |
---|
| 706 | maxLineHeight = tmpGlyph->height; |
---|
| 707 | |
---|
| 708 | if (x + tmpGlyph->width > size) |
---|
| 709 | { |
---|
| 710 | x = 0; |
---|
| 711 | y = y + maxLineHeight; |
---|
| 712 | maxLineHeight = 0; |
---|
| 713 | } |
---|
| 714 | if (y + maxLineHeight + 1 > size) |
---|
| 715 | break; |
---|
| 716 | x += tmpGlyph->width + 1; |
---|
| 717 | |
---|
| 718 | } |
---|
| 719 | } |
---|
| 720 | if (i == FONT_HIGHEST_KNOWN_CHAR) |
---|
| 721 | sizeOK = true; |
---|
| 722 | else |
---|
| 723 | size *= 2; |
---|
| 724 | } |
---|
| 725 | return size; |
---|
| 726 | |
---|
| 727 | } |
---|
| 728 | |
---|
| 729 | /** |
---|
| 730 | \brief Quick utility function for texture creation |
---|
| 731 | \param input an integer |
---|
| 732 | \returns the next bigger 2^n-integer than input |
---|
| 733 | */ |
---|
| 734 | int Font::powerOfTwo(int input) |
---|
| 735 | { |
---|
| 736 | int value = 1; |
---|
| 737 | |
---|
| 738 | while ( value < input ) { |
---|
| 739 | value <<= 1; |
---|
| 740 | } |
---|
| 741 | return value; |
---|
| 742 | } |
---|
| 743 | |
---|
| 744 | |
---|
| 745 | |
---|
| 746 | /** |
---|
| 747 | \brief a simple function to get some interesting information about this class |
---|
| 748 | */ |
---|
| 749 | void Font::debug(void) |
---|
| 750 | { |
---|
| 751 | |
---|
| 752 | // print the loaded font's style |
---|
| 753 | int style; |
---|
| 754 | style=TTF_GetFontStyle(this->font); |
---|
| 755 | PRINTF(0)("The font style is:"); |
---|
| 756 | if(style==TTF_STYLE_NORMAL) |
---|
| 757 | PRINTF(0)(" normal"); |
---|
| 758 | else { |
---|
| 759 | if(style&TTF_STYLE_BOLD) |
---|
| 760 | PRINTF(0)(" bold"); |
---|
| 761 | if(style&TTF_STYLE_ITALIC) |
---|
| 762 | PRINTF(0)(" italic"); |
---|
| 763 | if(style&TTF_STYLE_UNDERLINE) |
---|
| 764 | PRINTF(0)(" underline"); |
---|
| 765 | } |
---|
| 766 | PRINTF(0)("\n"); |
---|
| 767 | |
---|
| 768 | |
---|
| 769 | } |
---|
| 770 | |
---|
| 771 | |
---|
| 772 | |
---|
| 773 | |
---|
| 774 | |
---|
| 775 | |
---|
| 776 | |
---|
| 777 | |
---|
| 778 | |
---|
[3768] | 779 | /////////////////// |
---|
| 780 | /// TEXT-ENGINE /// |
---|
| 781 | /////////////////// |
---|
[3766] | 782 | /** |
---|
[3655] | 783 | \brief standard constructor |
---|
| 784 | */ |
---|
[3766] | 785 | TextEngine::TextEngine () |
---|
[3655] | 786 | { |
---|
[3766] | 787 | this->setClassName ("TextEngine"); |
---|
[3655] | 788 | |
---|
| 789 | } |
---|
| 790 | |
---|
| 791 | /** |
---|
| 792 | \brief the singleton reference to this class |
---|
| 793 | */ |
---|
[3766] | 794 | TextEngine* TextEngine::singletonRef = NULL; |
---|
[3655] | 795 | |
---|
| 796 | /** |
---|
| 797 | \returns a Pointer to this Class |
---|
| 798 | */ |
---|
[3766] | 799 | TextEngine* TextEngine::getInstance(void) |
---|
[3655] | 800 | { |
---|
[3766] | 801 | if (!TextEngine::singletonRef) |
---|
| 802 | TextEngine::singletonRef = new TextEngine(); |
---|
| 803 | return TextEngine::singletonRef; |
---|
[3655] | 804 | } |
---|
| 805 | |
---|
| 806 | /** |
---|
| 807 | \brief standard deconstructor |
---|
| 808 | |
---|
| 809 | */ |
---|
[3766] | 810 | TextEngine::~TextEngine () |
---|
[3655] | 811 | { |
---|
[3766] | 812 | TextEngine::singletonRef = NULL; |
---|
[3655] | 813 | |
---|
| 814 | } |
---|
[3766] | 815 | |
---|
| 816 | /** |
---|
| 817 | \brief function to enable TTF_Fonts |
---|
| 818 | */ |
---|
| 819 | void TextEngine::enableFonts(void) |
---|
| 820 | { |
---|
| 821 | if (!TTF_WasInit()) |
---|
| 822 | { |
---|
| 823 | if(TTF_Init()==-1) |
---|
| 824 | PRINTF(1)("TTF_Init: %s\n", TTF_GetError()); |
---|
| 825 | |
---|
| 826 | TextEngine::checkVersion(); |
---|
| 827 | } |
---|
| 828 | else |
---|
| 829 | PRINTF(4)("Fonts already initialized\n"); |
---|
| 830 | |
---|
| 831 | } |
---|
| 832 | |
---|
| 833 | /** |
---|
| 834 | \brief function to disable TTF_fonts |
---|
| 835 | */ |
---|
| 836 | void TextEngine::disableFonts(void) |
---|
| 837 | { |
---|
| 838 | if (TTF_WasInit()) |
---|
| 839 | { |
---|
| 840 | TTF_Quit(); |
---|
| 841 | } |
---|
| 842 | else |
---|
| 843 | PRINTF(4)("Fonts were not initialized.\n"); |
---|
| 844 | } |
---|
| 845 | |
---|
| 846 | /** |
---|
| 847 | \brief checks if the compiled version and the local version of SDL_ttf match. |
---|
| 848 | \returns true if match, false otherwise |
---|
| 849 | */ |
---|
| 850 | bool TextEngine::checkVersion(void) |
---|
| 851 | { |
---|
| 852 | SDL_version compile_version; |
---|
| 853 | SDL_version link_version; |
---|
| 854 | TTF_VERSION(&compile_version); |
---|
| 855 | link_version = *TTF_Linked_Version(); |
---|
| 856 | |
---|
| 857 | if (compile_version.major == link_version.major && |
---|
| 858 | compile_version.minor == link_version.minor && |
---|
| 859 | compile_version.patch == link_version.patch) |
---|
| 860 | { |
---|
| 861 | return true; |
---|
| 862 | } |
---|
| 863 | else |
---|
| 864 | { |
---|
| 865 | PRINTF(2)("compiled with SDL_ttf version: %d.%d.%d\n", |
---|
| 866 | compile_version.major, |
---|
| 867 | compile_version.minor, |
---|
| 868 | compile_version.patch); |
---|
| 869 | |
---|
| 870 | PRINTF(2)("running with SDL_ttf version: %d.%d.%d\n", |
---|
| 871 | link_version.major, |
---|
| 872 | link_version.minor, |
---|
| 873 | link_version.patch); |
---|
| 874 | return false; |
---|
| 875 | } |
---|
| 876 | } |
---|