[3655] | 1 | /* |
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| 2 | orxonox - the future of 3D-vertical-scrollers |
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| 3 | |
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| 4 | Copyright (C) 2004 orx |
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| 5 | |
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| 6 | This program is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 2, or (at your option) |
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| 9 | any later version. |
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| 10 | |
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| 11 | ### File Specific: |
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[3766] | 12 | main-programmer: Benjamin Grauer |
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[3655] | 13 | co-programmer: ... |
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[3766] | 14 | |
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| 15 | for some fonts and licenses visit: =http://www.dafont.com/en/font.php= |
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| 16 | |
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| 17 | !! IMPORTANT !! When using ttf fonts clear the license issues prior to |
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| 18 | adding them to orxonox. This is really important, because we do not |
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[3767] | 19 | want to offend anyone. |
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[3655] | 20 | */ |
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| 21 | |
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[3766] | 22 | #define DEBUG_SPECIAL_MODULE DEBUG_MODULE_FONT |
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[3655] | 23 | |
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[3766] | 24 | #include "text_engine.h" |
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[3655] | 25 | |
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| 26 | using namespace std; |
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| 27 | |
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[3766] | 28 | #include <stdlib.h> |
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| 29 | #include <stdio.h> |
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| 30 | #include <string.h> |
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[3655] | 31 | |
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[3766] | 32 | #include "graphics_engine.h" |
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[3769] | 33 | #include "resource_manager.h" |
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| 34 | |
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[3766] | 35 | #include "p_node.h" |
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| 36 | #include "vector.h" |
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| 37 | #include "debug.h" |
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| 38 | |
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| 39 | |
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| 40 | //////////// |
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[3768] | 41 | /// TEXT /// |
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[3766] | 42 | //////////// |
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[3769] | 43 | Text::Text(Font* font, int type) |
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[3768] | 44 | { |
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[3769] | 45 | // initialize this Text |
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| 46 | this->bindNode = NULL; |
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[3770] | 47 | this->font = font; |
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[3769] | 48 | this->text = NULL; |
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| 49 | this->texture = 0; |
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[3770] | 50 | this->setType(type); |
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[3769] | 51 | this->setPosition(0, 0); |
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[3768] | 52 | |
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[3769] | 53 | this->setText(FONT_DEFAULT_TEXT); |
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[3768] | 54 | } |
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| 55 | |
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[3769] | 56 | |
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[3768] | 57 | Text::~Text(void) |
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| 58 | { |
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| 59 | |
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| 60 | } |
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| 61 | |
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| 62 | |
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| 63 | void Text::setBindNode(PNode* bindNode) |
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| 64 | { |
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| 65 | this->bindNode = bindNode; |
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| 66 | } |
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| 67 | |
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[3655] | 68 | /** |
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[3768] | 69 | \brief sets the Type of this Text |
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| 70 | \param type the type to set. |
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| 71 | */ |
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| 72 | void Text::setType(int type) |
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| 73 | { |
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| 74 | this->type = type; |
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| 75 | } |
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| 76 | |
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| 77 | |
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| 78 | /** |
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| 79 | \brief Sets a new Text to the font |
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| 80 | \param text the new text to set |
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| 81 | */ |
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| 82 | void Text::setText(const char* text) |
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| 83 | { |
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| 84 | if (this->text) |
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| 85 | delete []this->text; |
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| 86 | this->text = new char[strlen(text)+1]; |
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| 87 | strcpy(this->text, text); |
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| 88 | } |
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| 89 | |
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| 90 | /** |
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| 91 | \brief sets a Position. |
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| 92 | \param x the x-position in pixels from the left border |
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| 93 | \param y the y-position in pixels from the top border |
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| 94 | */ |
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| 95 | void Text::setPosition(int x, int y) |
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| 96 | { |
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| 97 | this->posSize.x = x; |
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| 98 | this->posSize.y = y; |
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| 99 | } |
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| 100 | |
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[3769] | 101 | /** |
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| 102 | \brief sets a new color to the font |
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| 103 | \param r Red |
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| 104 | \param g Green |
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| 105 | \param b Blue |
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| 106 | */ |
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| 107 | void Text::setColor(Uint8 r, Uint8 g, Uint8 b) |
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| 108 | { |
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| 109 | this->color.r = r; |
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| 110 | this->color.g = g; |
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| 111 | this->color.b = b; |
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| 112 | } |
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[3768] | 113 | |
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| 114 | /** |
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[3769] | 115 | \brief creates a texture out of the given parameters |
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| 116 | |
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| 117 | this has to be called every time by the user, to if changes were made. |
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| 118 | */ |
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| 119 | void Text::createTexture(void) |
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| 120 | { |
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| 121 | SDL_Surface* tmpSurf; |
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| 122 | if (this->texture) |
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| 123 | glDeleteTextures(1, &this->texture); |
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| 124 | tmpSurf = TTF_RenderText_Blended(this->font->font, |
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| 125 | this->text, |
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| 126 | this->color); |
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| 127 | if (tmpSurf) |
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| 128 | this->texture = loadTexture(tmpSurf, &this->texCoord); |
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| 129 | |
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| 130 | this->posSize.w = tmpSurf->w; |
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| 131 | this->posSize.h = tmpSurf->h; |
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| 132 | SDL_FreeSurface(tmpSurf); |
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| 133 | } |
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| 134 | |
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| 135 | /** |
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[3768] | 136 | \brief draws the Font |
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| 137 | \todo FIX this is to slow/static |
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| 138 | */ |
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| 139 | void Text::draw(void) |
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| 140 | { |
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| 141 | // storing all the Transformation Matrices. |
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| 142 | GLdouble modMat[16]; |
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| 143 | GLdouble projMat[16]; |
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| 144 | GLint viewPort[4]; |
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| 145 | glGetDoublev(GL_PROJECTION_MATRIX, projMat); |
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| 146 | glGetDoublev(GL_MODELVIEW_MATRIX, modMat); |
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| 147 | glGetIntegerv(GL_VIEWPORT, viewPort); |
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| 148 | |
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[3770] | 149 | GraphicsEngine::enter2DMode(); |
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[3768] | 150 | |
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[3769] | 151 | |
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[3768] | 152 | // setting the Position of this Text. |
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| 153 | Vector pos; |
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| 154 | if (this->bindNode) |
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| 155 | { |
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| 156 | GLdouble x = this->bindNode->getAbsCoor().x; |
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| 157 | GLdouble y = this->bindNode->getAbsCoor().y; |
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| 158 | GLdouble z = this->bindNode->getAbsCoor().z; |
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| 159 | GLdouble tmp[3]; |
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| 160 | gluProject(x, y, z, modMat, projMat, viewPort, tmp, tmp+1, tmp+2); |
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| 161 | pos.x = tmp[0] + this->posSize.x; |
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| 162 | pos.y = GraphicsEngine::getInstance()->getResolutionY() - tmp[1] + this->posSize.y; |
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| 163 | pos.z = tmp[2]; |
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| 164 | } |
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| 165 | else |
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| 166 | { |
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| 167 | pos.x = this->posSize.x; |
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| 168 | pos.y = this->posSize.y; |
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| 169 | pos.z = 0; |
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| 170 | } |
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| 171 | |
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| 172 | // drawing this Text. |
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| 173 | if(type == TEXT_STATIC) |
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| 174 | { |
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| 175 | glBindTexture(GL_TEXTURE_2D, this->texture); |
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| 176 | glEnable(GL_TEXTURE_2D); |
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| 177 | glBegin(GL_QUADS); |
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| 178 | |
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| 179 | glTexCoord2f(this->texCoord.minU, this->texCoord.minV); |
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[3771] | 180 | glVertex2f(pos.x, pos.y ); |
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[3768] | 181 | |
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| 182 | glTexCoord2f(this->texCoord.maxU, this->texCoord.minV); |
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[3771] | 183 | glVertex2f(pos.x + this->posSize.w, pos.y ); |
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[3768] | 184 | |
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| 185 | glTexCoord2f(this->texCoord.maxU, this->texCoord.maxV); |
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[3771] | 186 | glVertex2f(pos.x + this->posSize.w, pos.y + this->posSize.h); |
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[3768] | 187 | |
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| 188 | glTexCoord2f(this->texCoord.minU, this->texCoord.maxV); |
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[3771] | 189 | glVertex2f(pos.x, pos.y + this->posSize.h); |
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[3768] | 190 | |
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| 191 | glEnd(); |
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| 192 | } |
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[3770] | 193 | else //(if type == TEXT_DYNAMIC) |
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[3768] | 194 | { |
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| 195 | Glyph** glyphArray = this->font->getGlyphArray(); |
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| 196 | glBindTexture(GL_TEXTURE_2D, this->font->getFastTextureID()); |
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| 197 | // glEnable(GL_TEXTURE_2D); |
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| 198 | glTranslatef(pos.x, pos.y, 0); |
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| 199 | |
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[3770] | 200 | // printf("%d, %d\n", this->font->getFastTextureID(), glyphArray[65]->displayList); |
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[3768] | 201 | char* tmpText = this->text; |
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| 202 | while (*tmpText != '\0') |
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| 203 | { |
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| 204 | if(glyphArray[*tmpText]) |
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| 205 | { |
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| 206 | glCallList(glyphArray[*tmpText]->displayList); |
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| 207 | glTranslatef(glyphArray[*tmpText]->width, 0, 0); |
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| 208 | } |
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| 209 | tmpText++; |
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| 210 | } |
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| 211 | } |
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[3770] | 212 | GraphicsEngine::leave2DMode(); |
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[3768] | 213 | } |
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| 214 | |
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| 215 | |
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| 216 | |
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| 217 | //////////// |
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| 218 | /// FONT /// |
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| 219 | //////////// |
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| 220 | /** |
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[3766] | 221 | \brief constructs a Font |
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| 222 | \param fontFile the File to load the font from |
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[3767] | 223 | \param fontSize the Size of the Font in Pixels |
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| 224 | \param r Red value of the Font. |
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| 225 | \param g Green value of the Font. |
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| 226 | \param b Blue value of the Font. |
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[3766] | 227 | */ |
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[3767] | 228 | Font::Font(const char* fontFile, unsigned int fontSize, Uint8 r, Uint8 g, Uint8 b) |
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[3766] | 229 | { |
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| 230 | // setting default values. |
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| 231 | this->font = NULL; |
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| 232 | this->fontFile = NULL; |
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| 233 | this->glyphArray = NULL; |
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[3769] | 234 | this->fastTextureID = 0; |
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[3766] | 235 | |
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| 236 | this->setSize(fontSize); |
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[3769] | 237 | this->setStyle("c");//TTF_STYLE_NORMAL); |
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| 238 | |
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[3766] | 239 | this->setFont(fontFile); |
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| 240 | |
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| 241 | |
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[3769] | 242 | this->setFastColor(r, g, b); |
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[3768] | 243 | |
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[3766] | 244 | this->fastTextureID = this->createFastTexture(); |
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| 245 | } |
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| 246 | |
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| 247 | /** |
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[3767] | 248 | \brief destructs a font |
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| 249 | */ |
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| 250 | Font::~Font(void) |
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| 251 | { |
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[3769] | 252 | // deleting the List of all Texts |
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[3767] | 253 | |
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[3769] | 254 | // deleting all Glyphs |
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[3767] | 255 | if (this->glyphArray) |
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| 256 | { |
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| 257 | for (int i = 0; i < FONT_HIGHEST_KNOWN_CHAR; i++) |
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| 258 | delete this->glyphArray[i]; |
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| 259 | delete []this->glyphArray; |
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| 260 | } |
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| 261 | |
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[3769] | 262 | // erease this font out of the memory. |
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[3767] | 263 | if (this->font) |
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| 264 | TTF_CloseFont(this->font); |
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| 265 | } |
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| 266 | |
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| 267 | /** |
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[3766] | 268 | \brief sets The Font. |
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| 269 | \param fontFile The file containing the font. |
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| 270 | \returns true if loaded, false if something went wrong, or if a font was loaded before. |
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| 271 | */ |
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| 272 | bool Font::setFont(const char* fontFile) |
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| 273 | { |
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| 274 | if (!this->fontFile) |
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| 275 | { |
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| 276 | this->fontFile = new char[strlen(fontFile)+1]; |
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| 277 | strcpy(this->fontFile, fontFile); |
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| 278 | |
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| 279 | this->font = TTF_OpenFont(this->fontFile, this->fontSize); |
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| 280 | if(!this->font) |
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| 281 | { |
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| 282 | PRINTF(1)("TTF_OpenFont: %s\n", TTF_GetError()); |
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| 283 | return false; |
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| 284 | } |
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| 285 | return true; |
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| 286 | } |
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| 287 | else |
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| 288 | { |
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| 289 | PRINTF(2)("Font already initialized, unable to change it now.\n"); |
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| 290 | return false; |
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| 291 | } |
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| 292 | } |
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| 293 | |
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| 294 | /** |
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| 295 | \brief sets a specific renderStyle |
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| 296 | \param renderStyle the Style to render: a char-array containing: |
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| 297 | i: italic, b: bold, u, underline |
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| 298 | */ |
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| 299 | void Font::setStyle(char* renderStyle) |
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| 300 | { |
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[3768] | 301 | this->renderStyle = TTF_STYLE_NORMAL; |
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[3766] | 302 | |
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| 303 | for (int i = 0; i < strlen(renderStyle); i++) |
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| 304 | if (strncmp(renderStyle+i, "b", 1) == 0) |
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[3768] | 305 | this->renderStyle |= TTF_STYLE_BOLD; |
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[3766] | 306 | else if (strncmp(renderStyle+i, "i", 1) == 0) |
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[3768] | 307 | this->renderStyle |= TTF_STYLE_ITALIC; |
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[3766] | 308 | else if (strncmp(renderStyle+i, "u", 1) == 0) |
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[3768] | 309 | this->renderStyle |= TTF_STYLE_UNDERLINE; |
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[3766] | 310 | |
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| 311 | if (this->font) |
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[3768] | 312 | TTF_SetFontStyle(this->font, this->renderStyle); |
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[3766] | 313 | else |
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| 314 | PRINTF(2)("Font was not initialized, please do so before setting the Font-Style.\n"); |
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| 315 | } |
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| 316 | |
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[3768] | 317 | |
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| 318 | |
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[3766] | 319 | /** |
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| 320 | \brief Sets a new Size to the font |
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| 321 | \param fontSize The new Size in pixels. |
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| 322 | */ |
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| 323 | void Font::setSize(unsigned int fontSize) |
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| 324 | { |
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| 325 | this->fontSize = fontSize; |
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| 326 | } |
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| 327 | |
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| 328 | /** |
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| 329 | \brief sets a new color to the font |
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| 330 | \param r Red |
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| 331 | \param g Green |
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| 332 | \param b Blue |
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| 333 | */ |
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[3769] | 334 | void Font::setFastColor(Uint8 r, Uint8 g, Uint8 b) |
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[3766] | 335 | { |
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[3769] | 336 | this->fastColor.r = r; |
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| 337 | this->fastColor.g = g; |
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| 338 | this->fastColor.b = b; |
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[3766] | 339 | } |
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| 340 | |
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| 341 | /** |
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| 342 | \returns the maximum height of the Font, if the font was initialized, 0 otherwise |
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| 343 | */ |
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| 344 | int Font::getMaxHeight(void) |
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| 345 | { |
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| 346 | if (this->font) |
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| 347 | return TTF_FontHeight(this->font); |
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| 348 | else |
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| 349 | return 0; |
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| 350 | } |
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| 351 | |
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| 352 | /** |
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| 353 | \returns the maximum ascent of the Font, if the font was initialized, 0 otherwise |
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| 354 | |
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| 355 | the ascent is the pixels of the font above the baseline |
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| 356 | */ |
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| 357 | int Font::getMaxAscent(void) |
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| 358 | { |
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| 359 | if (this->font) |
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| 360 | return TTF_FontAscent(this->font); |
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| 361 | else |
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| 362 | return 0; |
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| 363 | } |
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| 364 | |
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| 365 | /** |
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| 366 | \returns the maximum descent of the Font, if the font was initialized, 0 otherwise |
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| 367 | |
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| 368 | the descent is the pixels of the font below the baseline |
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| 369 | */ |
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| 370 | int Font::getMaxDescent(void) |
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| 371 | { |
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| 372 | if (this->font) |
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| 373 | return TTF_FontDescent(this->font); |
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| 374 | else |
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| 375 | return 0; |
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| 376 | } |
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| 377 | |
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| 378 | /** |
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| 379 | \param character The character to get info about. |
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| 380 | \returns a Glyph struct of a character. This Glyph is a pointer, |
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| 381 | and MUST be deleted by the user.. |
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| 382 | |
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| 383 | This only works for horizontal fonts. see |
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| 384 | http://freetype.sourceforge.net/freetype2/docs/tutorial/step2.html |
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| 385 | for more info about vertical Fonts |
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| 386 | */ |
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| 387 | Glyph* Font::getGlyphMetrics(Uint16 character) |
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| 388 | { |
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| 389 | Glyph* rg = new Glyph; |
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| 390 | rg->character = character; |
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| 391 | TTF_GlyphMetrics(this->font, rg->character, |
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| 392 | &rg->minX, &rg->maxX, |
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| 393 | &rg->minY, &rg->maxY, |
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| 394 | &rg->advance); |
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| 395 | rg->height = rg->maxY - rg->minY; |
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| 396 | rg->width = rg->maxX - rg->minX; |
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| 397 | rg->bearingX = (rg->advance - rg->width) / 2; |
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| 398 | rg->bearingY = rg->maxY; |
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| 399 | return rg; |
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| 400 | } |
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| 401 | |
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| 402 | GLuint Font::createFastTexture(void) |
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| 403 | { |
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| 404 | /* interesting GLYPHS: |
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| 405 | * 33-47: Special Characters. |
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| 406 | * 48-57: 0-9 |
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| 407 | * 58-63: some more special chars (minor) |
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| 408 | * 65-90: A-Z |
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| 409 | * 97-122: a-z |
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| 410 | */ |
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| 411 | int numberOfGlyphs = 90; |
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| 412 | |
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| 413 | this->initGlyphs(33, numberOfGlyphs); |
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| 414 | |
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| 415 | int rectSize = this->findOptimalFastTextureSize(); |
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| 416 | |
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| 417 | // setting default values. (maybe not needed afterwards) |
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| 418 | SDL_Color tmpColor; tmpColor.r = tmpColor.g = tmpColor.b = 0; |
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| 419 | // Surface definition. |
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| 420 | SDL_Rect tmpRect; // this represents a Rectangle for blitting. |
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| 421 | SDL_Surface* tmpSurf = SDL_CreateRGBSurface(SDL_SWSURFACE, |
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| 422 | rectSize, rectSize, |
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| 423 | 32, |
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| 424 | #if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ |
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| 425 | 0x000000FF, |
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| 426 | 0x0000FF00, |
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| 427 | 0x00FF0000, |
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| 428 | 0xFF000000 |
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| 429 | #else |
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| 430 | 0xFF000000, |
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| 431 | 0x00FF0000, |
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| 432 | 0x0000FF00, |
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| 433 | 0x000000FF |
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| 434 | #endif |
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| 435 | ); |
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| 436 | tmpRect.x = 0; tmpRect.y = 0; tmpRect.w = tmpSurf->w; tmpRect.h = tmpSurf->h; |
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| 437 | SDL_SetClipRect(tmpSurf, &tmpRect); |
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| 438 | int maxLineHeight = 0; |
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| 439 | |
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| 440 | // all the interessting Glyphs |
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| 441 | for (int i = 33; i <= 122; i++) |
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| 442 | { |
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| 443 | SDL_Surface* glyphSurf = NULL; |
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| 444 | Glyph* tmpGlyph; |
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| 445 | |
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| 446 | if (tmpGlyph = this->glyphArray[i]) |
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| 447 | { |
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| 448 | if (tmpGlyph->height > maxLineHeight) |
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| 449 | maxLineHeight = tmpGlyph->height; |
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| 450 | |
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| 451 | if (tmpRect.x+tmpGlyph->width > tmpSurf->w) |
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| 452 | { |
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| 453 | tmpRect.x = 0; |
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| 454 | tmpRect.y = tmpRect.y + maxLineHeight + 1; |
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| 455 | maxLineHeight = 0; |
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| 456 | } |
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| 457 | if (tmpRect.y + maxLineHeight > tmpSurf->h) |
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| 458 | { |
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| 459 | PRINTF(1)("Protection, so font cannot write over the boundraries error (this should not heappen\n"); |
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| 460 | break; |
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| 461 | } |
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| 462 | // reading in the new Glyph |
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[3769] | 463 | glyphSurf = TTF_RenderGlyph_Blended(this->font, i, this->fastColor); |
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[3766] | 464 | if( glyphSurf ) |
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| 465 | { |
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| 466 | |
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| 467 | SDL_SetAlpha(glyphSurf, 0, 0); |
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| 468 | |
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| 469 | SDL_BlitSurface(glyphSurf, NULL, tmpSurf, &tmpRect); |
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| 470 | TexCoord tmpTexCoord; |
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| 471 | tmpTexCoord.minU = (float)tmpRect.x/(float)tmpSurf->w; |
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| 472 | tmpTexCoord.maxU = (float)(tmpRect.x+tmpGlyph->width)/(float)tmpSurf->w; |
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| 473 | tmpTexCoord.minV = (float)tmpRect.y/(float)tmpSurf->w; |
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| 474 | tmpTexCoord.maxV = (float)(tmpRect.y+tmpGlyph->height)/(float)tmpSurf->w; |
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| 475 | tmpGlyph->displayList = glGenLists(1); |
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| 476 | |
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| 477 | glNewList(tmpGlyph->displayList, GL_COMPILE); |
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| 478 | glBegin(GL_QUADS); |
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| 479 | glTexCoord2f(tmpTexCoord.minU, tmpTexCoord.minV); |
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| 480 | glVertex2d(0, 0); |
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| 481 | glTexCoord2f(tmpTexCoord.minU, tmpTexCoord.maxV); |
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| 482 | glVertex2d(0, tmpGlyph->height); |
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| 483 | glTexCoord2f(tmpTexCoord.maxU, tmpTexCoord.maxV); |
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| 484 | glVertex2d(tmpGlyph->width, tmpGlyph->height); |
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| 485 | glTexCoord2f(tmpTexCoord.maxU, tmpTexCoord.minV); |
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| 486 | glVertex2d(tmpGlyph->width, 0); |
---|
| 487 | glEnd(); |
---|
| 488 | glEndList(); |
---|
| 489 | SDL_FreeSurface(glyphSurf); |
---|
| 490 | |
---|
| 491 | tmpRect.x += tmpGlyph->width + 1; |
---|
| 492 | |
---|
| 493 | // Outputting Glyphs to BMP-files. |
---|
| 494 | /* |
---|
| 495 | char outname[64]; |
---|
| 496 | if (i < 10) |
---|
| 497 | sprintf( outname, "glyph-00%d.bmp", i ); |
---|
| 498 | else if (i <100) |
---|
| 499 | sprintf( outname, "glyph-0%d.bmp", i ); |
---|
| 500 | else |
---|
| 501 | sprintf( outname, "glyph-%d.bmp", i ); |
---|
| 502 | SDL_SaveBMP(tmpSurf, outname); |
---|
| 503 | */ |
---|
| 504 | } |
---|
| 505 | } |
---|
| 506 | } |
---|
| 507 | GLuint texture; |
---|
| 508 | glGenTextures(1, &texture); |
---|
| 509 | glBindTexture(GL_TEXTURE_2D, texture); |
---|
| 510 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
---|
| 511 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
---|
| 512 | glTexImage2D(GL_TEXTURE_2D, |
---|
| 513 | 0, |
---|
| 514 | GL_RGBA, |
---|
| 515 | tmpSurf->w, tmpSurf->h, |
---|
| 516 | 0, |
---|
| 517 | GL_RGBA, |
---|
| 518 | GL_UNSIGNED_BYTE, |
---|
| 519 | tmpSurf->pixels); |
---|
| 520 | SDL_FreeSurface(tmpSurf); |
---|
| 521 | return texture; |
---|
| 522 | } |
---|
| 523 | |
---|
| 524 | /** |
---|
| 525 | \brief stores Glyph Metrics in an Array. |
---|
| 526 | \param from The Glyph to start from. |
---|
| 527 | \param count The number of Glyphs to start From. |
---|
| 528 | */ |
---|
| 529 | void Font::initGlyphs(Uint16 from, Uint16 count) |
---|
| 530 | { |
---|
| 531 | /* initialize the Array, and set all its entries to NULL |
---|
| 532 | * only if the Glyph-array has not been initialized |
---|
| 533 | */ |
---|
| 534 | if (!this->glyphArray) |
---|
| 535 | { |
---|
| 536 | this->glyphArray = new Glyph*[FONT_HIGHEST_KNOWN_CHAR]; |
---|
| 537 | for (int i = 0; i < FONT_HIGHEST_KNOWN_CHAR; i++) |
---|
| 538 | this->glyphArray[i] = NULL; |
---|
| 539 | } |
---|
| 540 | |
---|
| 541 | Uint16 lastGlyph = from + count; |
---|
| 542 | |
---|
| 543 | for (int i = from; i <= lastGlyph; i++) |
---|
| 544 | { |
---|
| 545 | // setting up all the Glyphs we like. |
---|
| 546 | glyphArray[i] = getGlyphMetrics(i); |
---|
| 547 | } |
---|
| 548 | return; |
---|
| 549 | } |
---|
| 550 | |
---|
| 551 | /** |
---|
| 552 | \returns the optimal size to use as the texture size |
---|
| 553 | |
---|
| 554 | \todo: this algorithm can be a lot more faster, althought it does |
---|
| 555 | not really matter within the init-context, and 128 glyphs. |
---|
| 556 | |
---|
| 557 | This function searches for a 2^n sizes texture-size, this is for |
---|
| 558 | openGL-version < 1.2 compatibility. and because it is realy easy like this. |
---|
| 559 | */ |
---|
| 560 | int Font::findOptimalFastTextureSize(void) |
---|
| 561 | { |
---|
| 562 | int i; |
---|
| 563 | int x,y; // the counters |
---|
| 564 | int maxLineHeight; |
---|
| 565 | int size = 32; // starting Value, we have to start somewhere 32 seems reasonable. |
---|
| 566 | bool sizeOK = false; |
---|
| 567 | Glyph* tmpGlyph; |
---|
| 568 | |
---|
| 569 | while (!sizeOK) |
---|
| 570 | { |
---|
| 571 | x = 0; y = 0; |
---|
| 572 | maxLineHeight = 0; |
---|
| 573 | for (i = 0; i < FONT_HIGHEST_KNOWN_CHAR; i++) |
---|
| 574 | { |
---|
| 575 | if(tmpGlyph = this->glyphArray[i]) |
---|
| 576 | { |
---|
| 577 | // getting the height of the highest Glyph in the Line. |
---|
| 578 | if (tmpGlyph->height > maxLineHeight) |
---|
| 579 | maxLineHeight = tmpGlyph->height; |
---|
| 580 | |
---|
| 581 | if (x + tmpGlyph->width > size) |
---|
| 582 | { |
---|
| 583 | x = 0; |
---|
| 584 | y = y + maxLineHeight; |
---|
| 585 | maxLineHeight = 0; |
---|
| 586 | } |
---|
| 587 | if (y + maxLineHeight + 1 > size) |
---|
| 588 | break; |
---|
| 589 | x += tmpGlyph->width + 1; |
---|
| 590 | |
---|
| 591 | } |
---|
| 592 | } |
---|
| 593 | if (i == FONT_HIGHEST_KNOWN_CHAR) |
---|
| 594 | sizeOK = true; |
---|
| 595 | else |
---|
| 596 | size *= 2; |
---|
| 597 | } |
---|
| 598 | return size; |
---|
| 599 | |
---|
| 600 | } |
---|
| 601 | |
---|
| 602 | |
---|
| 603 | /** |
---|
| 604 | \brief a simple function to get some interesting information about this class |
---|
| 605 | */ |
---|
| 606 | void Font::debug(void) |
---|
| 607 | { |
---|
| 608 | |
---|
| 609 | // print the loaded font's style |
---|
| 610 | int style; |
---|
| 611 | style=TTF_GetFontStyle(this->font); |
---|
| 612 | PRINTF(0)("The font style is:"); |
---|
| 613 | if(style==TTF_STYLE_NORMAL) |
---|
| 614 | PRINTF(0)(" normal"); |
---|
| 615 | else { |
---|
| 616 | if(style&TTF_STYLE_BOLD) |
---|
| 617 | PRINTF(0)(" bold"); |
---|
| 618 | if(style&TTF_STYLE_ITALIC) |
---|
| 619 | PRINTF(0)(" italic"); |
---|
| 620 | if(style&TTF_STYLE_UNDERLINE) |
---|
| 621 | PRINTF(0)(" underline"); |
---|
| 622 | } |
---|
| 623 | PRINTF(0)("\n"); |
---|
| 624 | |
---|
| 625 | |
---|
| 626 | } |
---|
| 627 | |
---|
[3769] | 628 | //////////// |
---|
| 629 | /// UTIL /// |
---|
| 630 | //////////// |
---|
| 631 | /** |
---|
| 632 | \brief Loads a Font from an SDL_surface into a texture. |
---|
| 633 | \param surface The surface to make the texture of |
---|
| 634 | \param texCoord The texture coordinates of the 4 corners of the texture |
---|
| 635 | \returns the ID of the texture |
---|
| 636 | */ |
---|
| 637 | GLuint loadTexture(SDL_Surface *surface, TexCoord* texCoord) |
---|
| 638 | { |
---|
| 639 | GLuint texture; |
---|
| 640 | int w, h; |
---|
| 641 | SDL_Surface *image; |
---|
| 642 | SDL_Rect area; |
---|
| 643 | Uint32 saved_flags; |
---|
| 644 | Uint8 saved_alpha; |
---|
| 645 | |
---|
| 646 | /* Use the surface width and height expanded to powers of 2 */ |
---|
| 647 | w = powerOfTwo(surface->w); |
---|
| 648 | h = powerOfTwo(surface->h); |
---|
| 649 | if (texCoord) |
---|
| 650 | { |
---|
| 651 | texCoord->minU = 0.0f; |
---|
| 652 | texCoord->minV = 0.0f; |
---|
| 653 | texCoord->maxU = (GLfloat)surface->w / w; |
---|
| 654 | texCoord->maxV = (GLfloat)surface->h / h; |
---|
| 655 | } |
---|
| 656 | image = SDL_CreateRGBSurface(SDL_SWSURFACE, |
---|
| 657 | w, h, |
---|
| 658 | 32, |
---|
| 659 | #if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ |
---|
| 660 | 0x000000FF, |
---|
| 661 | 0x0000FF00, |
---|
| 662 | 0x00FF0000, |
---|
| 663 | 0xFF000000 |
---|
| 664 | #else |
---|
| 665 | 0xFF000000, |
---|
| 666 | 0x00FF0000, |
---|
| 667 | 0x0000FF00, |
---|
| 668 | 0x000000FF |
---|
| 669 | #endif |
---|
| 670 | ); |
---|
| 671 | if ( image == NULL ) { |
---|
| 672 | return 0; |
---|
| 673 | } |
---|
| 674 | |
---|
| 675 | /* Save the alpha blending attributes */ |
---|
| 676 | saved_flags = surface->flags&(SDL_SRCALPHA|SDL_RLEACCELOK); |
---|
| 677 | saved_alpha = surface->format->alpha; |
---|
| 678 | if ( (saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { |
---|
| 679 | SDL_SetAlpha(surface, 0, 0); |
---|
| 680 | } |
---|
| 681 | |
---|
| 682 | /* Copy the surface into the GL texture image */ |
---|
| 683 | area.x = 0; |
---|
| 684 | area.y = 0; |
---|
| 685 | area.w = surface->w; |
---|
| 686 | area.h = surface->h; |
---|
| 687 | SDL_BlitSurface(surface, &area, image, &area); |
---|
| 688 | |
---|
| 689 | /* Restore the alpha blending attributes */ |
---|
| 690 | if ( (saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { |
---|
| 691 | SDL_SetAlpha(surface, saved_flags, saved_alpha); |
---|
| 692 | } |
---|
| 693 | |
---|
| 694 | /* Create an OpenGL texture for the image */ |
---|
| 695 | glGenTextures(1, &texture); |
---|
| 696 | glBindTexture(GL_TEXTURE_2D, texture); |
---|
| 697 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
---|
| 698 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
---|
| 699 | glTexImage2D(GL_TEXTURE_2D, |
---|
| 700 | 0, |
---|
| 701 | GL_RGBA, |
---|
| 702 | w, h, |
---|
| 703 | 0, |
---|
| 704 | GL_RGBA, |
---|
| 705 | GL_UNSIGNED_BYTE, |
---|
| 706 | image->pixels); |
---|
| 707 | SDL_FreeSurface(image); /* No longer needed */ |
---|
| 708 | |
---|
| 709 | return texture; |
---|
| 710 | } |
---|
[3766] | 711 | |
---|
[3769] | 712 | /** |
---|
| 713 | \brief Quick utility function for texture creation |
---|
| 714 | \param input an integer |
---|
| 715 | \returns the next bigger 2^n-integer than input |
---|
| 716 | */ |
---|
| 717 | int powerOfTwo(int input) |
---|
| 718 | { |
---|
| 719 | int value = 1; |
---|
| 720 | |
---|
| 721 | while ( value < input ) { |
---|
| 722 | value <<= 1; |
---|
| 723 | } |
---|
| 724 | return value; |
---|
| 725 | } |
---|
[3766] | 726 | |
---|
| 727 | |
---|
| 728 | |
---|
| 729 | |
---|
| 730 | |
---|
| 731 | |
---|
[3768] | 732 | /////////////////// |
---|
| 733 | /// TEXT-ENGINE /// |
---|
| 734 | /////////////////// |
---|
[3766] | 735 | /** |
---|
[3655] | 736 | \brief standard constructor |
---|
| 737 | */ |
---|
[3766] | 738 | TextEngine::TextEngine () |
---|
[3655] | 739 | { |
---|
[3766] | 740 | this->setClassName ("TextEngine"); |
---|
[3769] | 741 | this->enableFonts(); |
---|
[3655] | 742 | |
---|
[3769] | 743 | this->textList = new tList<Text>; |
---|
[3655] | 744 | } |
---|
| 745 | |
---|
| 746 | /** |
---|
| 747 | \brief the singleton reference to this class |
---|
| 748 | */ |
---|
[3766] | 749 | TextEngine* TextEngine::singletonRef = NULL; |
---|
[3655] | 750 | |
---|
| 751 | /** |
---|
| 752 | \returns a Pointer to this Class |
---|
| 753 | */ |
---|
[3766] | 754 | TextEngine* TextEngine::getInstance(void) |
---|
[3655] | 755 | { |
---|
[3766] | 756 | if (!TextEngine::singletonRef) |
---|
| 757 | TextEngine::singletonRef = new TextEngine(); |
---|
| 758 | return TextEngine::singletonRef; |
---|
[3655] | 759 | } |
---|
| 760 | |
---|
| 761 | /** |
---|
| 762 | \brief standard deconstructor |
---|
| 763 | |
---|
| 764 | */ |
---|
[3766] | 765 | TextEngine::~TextEngine () |
---|
[3655] | 766 | { |
---|
[3769] | 767 | this->disableFonts(); |
---|
| 768 | |
---|
| 769 | delete this->textList; |
---|
| 770 | |
---|
[3766] | 771 | TextEngine::singletonRef = NULL; |
---|
[3655] | 772 | |
---|
| 773 | } |
---|
[3766] | 774 | |
---|
| 775 | /** |
---|
| 776 | \brief function to enable TTF_Fonts |
---|
| 777 | */ |
---|
| 778 | void TextEngine::enableFonts(void) |
---|
| 779 | { |
---|
| 780 | if (!TTF_WasInit()) |
---|
| 781 | { |
---|
| 782 | if(TTF_Init()==-1) |
---|
| 783 | PRINTF(1)("TTF_Init: %s\n", TTF_GetError()); |
---|
| 784 | |
---|
| 785 | TextEngine::checkVersion(); |
---|
| 786 | } |
---|
| 787 | else |
---|
| 788 | PRINTF(4)("Fonts already initialized\n"); |
---|
| 789 | |
---|
| 790 | } |
---|
| 791 | |
---|
| 792 | /** |
---|
| 793 | \brief function to disable TTF_fonts |
---|
| 794 | */ |
---|
| 795 | void TextEngine::disableFonts(void) |
---|
| 796 | { |
---|
| 797 | if (TTF_WasInit()) |
---|
| 798 | { |
---|
| 799 | TTF_Quit(); |
---|
| 800 | } |
---|
| 801 | else |
---|
| 802 | PRINTF(4)("Fonts were not initialized.\n"); |
---|
| 803 | } |
---|
| 804 | |
---|
| 805 | /** |
---|
[3769] | 806 | \brief creates a new Text with a certain font. |
---|
| 807 | \see Font::Font |
---|
| 808 | \see Text::Text |
---|
| 809 | */ |
---|
| 810 | Text* TextEngine::createText(const char* fontFile, unsigned int fontSize, Uint8 r, Uint8 g, Uint8 b) |
---|
| 811 | { |
---|
| 812 | Font* tmpFont; |
---|
| 813 | Text* newText; |
---|
| 814 | |
---|
| 815 | tmpFont = (Font*)ResourceManager::getInstance()->load(fontFile, TTF, RP_GAME); |
---|
| 816 | if (!tmpFont) |
---|
| 817 | { |
---|
| 818 | PRINTF(2)("Font %s could not be loaded, probably file not found\n", fontFile); |
---|
| 819 | return NULL; |
---|
| 820 | } |
---|
| 821 | |
---|
| 822 | newText = new Text(tmpFont, TEXT_DYNAMIC); |
---|
[3770] | 823 | textList->add(newText); |
---|
| 824 | |
---|
| 825 | return newText; |
---|
[3769] | 826 | } |
---|
| 827 | |
---|
| 828 | void TextEngine::draw(void) |
---|
| 829 | { |
---|
| 830 | tIterator<Text>* textIterator = textList->getIterator(); |
---|
| 831 | Text* text = textIterator->nextElement(); |
---|
| 832 | while( text != NULL) |
---|
| 833 | { |
---|
| 834 | text->draw(); |
---|
| 835 | text = textIterator->nextElement(); |
---|
| 836 | } |
---|
| 837 | delete textIterator; |
---|
| 838 | } |
---|
| 839 | |
---|
| 840 | /** |
---|
[3766] | 841 | \brief checks if the compiled version and the local version of SDL_ttf match. |
---|
| 842 | \returns true if match, false otherwise |
---|
| 843 | */ |
---|
| 844 | bool TextEngine::checkVersion(void) |
---|
| 845 | { |
---|
| 846 | SDL_version compile_version; |
---|
| 847 | SDL_version link_version; |
---|
| 848 | TTF_VERSION(&compile_version); |
---|
| 849 | link_version = *TTF_Linked_Version(); |
---|
| 850 | |
---|
| 851 | if (compile_version.major == link_version.major && |
---|
| 852 | compile_version.minor == link_version.minor && |
---|
| 853 | compile_version.patch == link_version.patch) |
---|
| 854 | { |
---|
| 855 | return true; |
---|
| 856 | } |
---|
| 857 | else |
---|
| 858 | { |
---|
| 859 | PRINTF(2)("compiled with SDL_ttf version: %d.%d.%d\n", |
---|
| 860 | compile_version.major, |
---|
| 861 | compile_version.minor, |
---|
| 862 | compile_version.patch); |
---|
| 863 | |
---|
| 864 | PRINTF(2)("running with SDL_ttf version: %d.%d.%d\n", |
---|
| 865 | link_version.major, |
---|
| 866 | link_version.minor, |
---|
| 867 | link_version.patch); |
---|
| 868 | return false; |
---|
| 869 | } |
---|
| 870 | } |
---|