[4597] | 1 | /* |
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[3655] | 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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[4597] | 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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[3911] | 38 | #include "list.h" |
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[3766] | 39 | |
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| 40 | //////////// |
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[3768] | 41 | /// TEXT /// |
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[3766] | 42 | //////////// |
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[3773] | 43 | /** |
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| 44 | \brief creates a new Text Element |
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| 45 | \param font the Font to render this text in |
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| 46 | \param type The renderType to display this font in |
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| 47 | |
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[4597] | 48 | this constructor is private, because the user should initialize |
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[3773] | 49 | a text with the TextEngine. |
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| 50 | */ |
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[3769] | 51 | Text::Text(Font* font, int type) |
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[3768] | 52 | { |
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[4320] | 53 | this->setClassID(CL_TEXT, "Text"); |
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[3833] | 54 | |
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[3769] | 55 | // initialize this Text |
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| 56 | this->bindNode = NULL; |
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[3770] | 57 | this->font = font; |
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[3769] | 58 | this->text = NULL; |
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[3843] | 59 | this->alignment = TEXT_DEFAULT_ALIGNMENT; |
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[3769] | 60 | this->texture = 0; |
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[3777] | 61 | this->blending = 1.0f; |
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[3770] | 62 | this->setType(type); |
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[3769] | 63 | this->setPosition(0, 0); |
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[3768] | 64 | |
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[3769] | 65 | this->setText(FONT_DEFAULT_TEXT); |
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[3768] | 66 | } |
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| 67 | |
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[3773] | 68 | /** |
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| 69 | \brief deletes a Text out of memory |
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[4597] | 70 | |
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[3773] | 71 | This also ereases the text from the textList of the TextEngine |
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| 72 | */ |
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[3768] | 73 | Text::~Text(void) |
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| 74 | { |
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[3772] | 75 | TextEngine::getInstance()->deleteText(this); |
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[3768] | 76 | } |
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| 77 | |
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[4458] | 78 | /** |
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| 79 | \brief tells the Text, that it should folow a PNode |
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| 80 | \param bindNode: the node to bind this text to |
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| 81 | */ |
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[3768] | 82 | void Text::setBindNode(PNode* bindNode) |
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| 83 | { |
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| 84 | this->bindNode = bindNode; |
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| 85 | } |
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| 86 | |
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[3655] | 87 | /** |
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[3768] | 88 | \brief sets the Type of this Text |
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| 89 | \param type the type to set. |
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| 90 | */ |
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| 91 | void Text::setType(int type) |
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| 92 | { |
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[4536] | 93 | if (this->font->font) |
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| 94 | this->type = type; |
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| 95 | else |
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| 96 | this->type = TEXT_DYNAMIC; |
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[3768] | 97 | } |
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| 98 | |
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| 99 | /** |
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| 100 | \brief Sets a new Text to the font |
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| 101 | \param text the new text to set |
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| 102 | */ |
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| 103 | void Text::setText(const char* text) |
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| 104 | { |
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| 105 | if (this->text) |
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| 106 | delete []this->text; |
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| 107 | this->text = new char[strlen(text)+1]; |
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| 108 | strcpy(this->text, text); |
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[3843] | 109 | |
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| 110 | |
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| 111 | // setting up the Text-Width if DYNAMIC |
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| 112 | if (this->type == TEXT_DYNAMIC) |
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| 113 | { |
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| 114 | Glyph** glyphArray = this->font->getGlyphArray(); |
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| 115 | |
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| 116 | int width = 0; |
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| 117 | char* tmpText = this->text; |
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| 118 | while (*tmpText != '\0') |
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[4597] | 119 | { |
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| 120 | if(glyphArray[*tmpText]) |
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| 121 | { |
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| 122 | width += glyphArray[*tmpText]->width; |
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| 123 | } |
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| 124 | tmpText++; |
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| 125 | } |
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[3843] | 126 | this->posSize.w = width; |
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| 127 | } |
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[3768] | 128 | } |
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| 129 | |
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| 130 | /** |
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| 131 | \brief sets a Position. |
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| 132 | \param x the x-position in pixels from the left border |
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| 133 | \param y the y-position in pixels from the top border |
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| 134 | */ |
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| 135 | void Text::setPosition(int x, int y) |
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| 136 | { |
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| 137 | this->posSize.x = x; |
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| 138 | this->posSize.y = y; |
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| 139 | } |
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| 140 | |
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[3769] | 141 | /** |
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[3843] | 142 | \brief sets the text-alignment |
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| 143 | \param alignment the alignment to set |
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| 144 | */ |
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[3845] | 145 | void Text::setAlignment(TEXT_ALIGNMENT alignment) |
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[3843] | 146 | { |
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| 147 | this->alignment = alignment; |
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| 148 | } |
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| 149 | |
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| 150 | /** |
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[3769] | 151 | \brief sets a new color to the font |
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| 152 | \param r Red |
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| 153 | \param g Green |
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| 154 | \param b Blue |
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| 155 | */ |
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| 156 | void Text::setColor(Uint8 r, Uint8 g, Uint8 b) |
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| 157 | { |
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| 158 | this->color.r = r; |
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| 159 | this->color.g = g; |
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| 160 | this->color.b = b; |
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| 161 | } |
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[3768] | 162 | |
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| 163 | /** |
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[3769] | 164 | \brief creates a texture out of the given parameters |
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| 165 | |
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| 166 | this has to be called every time by the user, to if changes were made. |
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[4536] | 167 | this is only for TEXT_STATIC-mode |
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[3769] | 168 | */ |
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| 169 | void Text::createTexture(void) |
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| 170 | { |
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| 171 | SDL_Surface* tmpSurf; |
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| 172 | if (this->texture) |
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| 173 | glDeleteTextures(1, &this->texture); |
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[4536] | 174 | if (likely(this->font != NULL)) |
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| 175 | tmpSurf = TTF_RenderText_Blended(this->font->font, |
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[4597] | 176 | this->text, |
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| 177 | this->color); |
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[3769] | 178 | if (tmpSurf) |
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| 179 | this->texture = loadTexture(tmpSurf, &this->texCoord); |
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| 180 | |
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| 181 | this->posSize.w = tmpSurf->w; |
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| 182 | this->posSize.h = tmpSurf->h; |
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| 183 | SDL_FreeSurface(tmpSurf); |
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| 184 | } |
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| 185 | |
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| 186 | /** |
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[3768] | 187 | \brief draws the Font |
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| 188 | */ |
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[3774] | 189 | void Text::draw(void) const |
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[3768] | 190 | { |
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| 191 | // setting the Position of this Text. |
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| 192 | Vector pos; |
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[3845] | 193 | if (this->alignment == TEXT_ALIGN_SCREEN_CENTER) |
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[3768] | 194 | { |
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[3845] | 195 | pos.x = GraphicsEngine::getInstance()->getResolutionX()/2 + this->posSize.x; |
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| 196 | pos.y = GraphicsEngine::getInstance()->getResolutionY()/2 + this->posSize.y; |
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| 197 | pos.z = 0; |
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| 198 | } |
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| 199 | else if (this->bindNode) |
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| 200 | { |
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[3768] | 201 | GLdouble x = this->bindNode->getAbsCoor().x; |
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| 202 | GLdouble y = this->bindNode->getAbsCoor().y; |
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| 203 | GLdouble z = this->bindNode->getAbsCoor().z; |
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| 204 | GLdouble tmp[3]; |
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[3844] | 205 | gluProject(x, y, z, GraphicsEngine::modMat, GraphicsEngine::projMat, GraphicsEngine::viewPort, tmp, tmp+1, tmp+2); |
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[3768] | 206 | pos.x = tmp[0] + this->posSize.x; |
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| 207 | pos.y = GraphicsEngine::getInstance()->getResolutionY() - tmp[1] + this->posSize.y; |
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| 208 | pos.z = tmp[2]; |
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| 209 | } |
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[4597] | 210 | else |
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[3768] | 211 | { |
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| 212 | pos.x = this->posSize.x; |
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| 213 | pos.y = this->posSize.y; |
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| 214 | pos.z = 0; |
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| 215 | } |
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| 216 | |
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[3777] | 217 | // setting the Blending effects |
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| 218 | glColor4f(1.0f,1.0f,1.0f, this->blending); |
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[4517] | 219 | glBlendFunc(GL_SRC_ALPHA, GL_ONE); |
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[3777] | 220 | |
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[3843] | 221 | glPushMatrix(); |
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| 222 | // transform for alignment. |
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| 223 | if (this->alignment == TEXT_ALIGN_RIGHT) |
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| 224 | glTranslatef(-this->posSize.w, 0, 0); |
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[3845] | 225 | else if (this->alignment == TEXT_ALIGN_CENTER || this->alignment == TEXT_ALIGN_SCREEN_CENTER) |
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[3843] | 226 | glTranslatef(-this->posSize.w/2, 0, 0); |
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| 227 | |
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[3768] | 228 | // drawing this Text. |
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| 229 | if(type == TEXT_STATIC) |
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| 230 | { |
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| 231 | glBindTexture(GL_TEXTURE_2D, this->texture); |
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| 232 | glEnable(GL_TEXTURE_2D); |
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| 233 | glBegin(GL_QUADS); |
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[4597] | 234 | |
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[3768] | 235 | glTexCoord2f(this->texCoord.minU, this->texCoord.minV); |
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[3771] | 236 | glVertex2f(pos.x, pos.y ); |
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[4597] | 237 | |
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[3768] | 238 | glTexCoord2f(this->texCoord.maxU, this->texCoord.minV); |
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[3771] | 239 | glVertex2f(pos.x + this->posSize.w, pos.y ); |
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[4597] | 240 | |
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[3768] | 241 | glTexCoord2f(this->texCoord.maxU, this->texCoord.maxV); |
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[3771] | 242 | glVertex2f(pos.x + this->posSize.w, pos.y + this->posSize.h); |
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[4597] | 243 | |
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[3768] | 244 | glTexCoord2f(this->texCoord.minU, this->texCoord.maxV); |
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[3771] | 245 | glVertex2f(pos.x, pos.y + this->posSize.h); |
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[4597] | 246 | |
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[3768] | 247 | glEnd(); |
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| 248 | } |
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[3770] | 249 | else //(if type == TEXT_DYNAMIC) |
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[3768] | 250 | { |
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| 251 | Glyph** glyphArray = this->font->getGlyphArray(); |
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| 252 | glBindTexture(GL_TEXTURE_2D, this->font->getFastTextureID()); |
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| 253 | // glEnable(GL_TEXTURE_2D); |
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| 254 | glTranslatef(pos.x, pos.y, 0); |
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| 255 | |
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| 256 | char* tmpText = this->text; |
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| 257 | while (*tmpText != '\0') |
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[4597] | 258 | { |
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| 259 | if(glyphArray[*tmpText]) |
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| 260 | { |
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| 261 | glCallList(glyphArray[*tmpText]->displayList); |
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| 262 | glTranslatef(glyphArray[*tmpText]->width, 0, 0); |
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| 263 | } |
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| 264 | tmpText++; |
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| 265 | } |
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[3768] | 266 | } |
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[3843] | 267 | glPopMatrix(); |
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[3768] | 268 | } |
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| 269 | |
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[3774] | 270 | /** |
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| 271 | \brief prints out some nice debug information about this text |
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| 272 | */ |
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| 273 | void Text::debug(void) const |
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| 274 | { |
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| 275 | PRINT(0)("=== TEXT: %s ===\n", this->text); |
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| 276 | if (this->bindNode) |
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| 277 | PRINT(0)("is bind to %s; ref=%p\n", this->bindNode->getName(), this->bindNode); |
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| 278 | PRINT(0)("Relative Position: (%d::%d)\n", this->posSize.x, this->posSize.y); |
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| 279 | PRINT(0)("Color: %d %d %d\n", this->color.r, this->color.g, this->color.b); |
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| 280 | } |
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[3768] | 281 | |
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| 282 | |
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| 283 | //////////// |
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[4458] | 284 | /// UTIL /// |
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| 285 | //////////// |
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| 286 | /** |
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| 287 | \brief Loads a Font from an SDL_surface into a texture. |
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| 288 | \param surface The surface to make the texture of |
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| 289 | \param texCoord The texture coordinates of the 4 corners of the texture |
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| 290 | \returns the ID of the texture |
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| 291 | */ |
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| 292 | GLuint Text::loadTexture(SDL_Surface *surface, TexCoord* texCoord) |
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| 293 | { |
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| 294 | GLuint texture; |
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| 295 | int w, h; |
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| 296 | SDL_Surface *image; |
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| 297 | SDL_Rect area; |
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| 298 | Uint32 saved_flags; |
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| 299 | Uint8 saved_alpha; |
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[4597] | 300 | |
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[4458] | 301 | /* Use the surface width and height expanded to powers of 2 */ |
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| 302 | w = powerOfTwo(surface->w); |
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| 303 | h = powerOfTwo(surface->h); |
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| 304 | if (texCoord) |
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| 305 | { |
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| 306 | texCoord->minU = 0.0f; |
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| 307 | texCoord->minV = 0.0f; |
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| 308 | texCoord->maxU = (GLfloat)surface->w / w; |
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| 309 | texCoord->maxV = (GLfloat)surface->h / h; |
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| 310 | } |
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| 311 | image = SDL_CreateRGBSurface(SDL_SWSURFACE, |
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[4597] | 312 | w, h, |
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| 313 | 32, |
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[4458] | 314 | #if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ |
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[4597] | 315 | 0x000000FF, |
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| 316 | 0x0000FF00, |
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| 317 | 0x00FF0000, |
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| 318 | 0xFF000000 |
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[4458] | 319 | #else |
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[4597] | 320 | 0xFF000000, |
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| 321 | 0x00FF0000, |
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| 322 | 0x0000FF00, |
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| 323 | 0x000000FF |
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[4458] | 324 | #endif |
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[4597] | 325 | ); |
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[4458] | 326 | if ( image == NULL ) { |
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| 327 | return 0; |
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| 328 | } |
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[4597] | 329 | |
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[4458] | 330 | /* Save the alpha blending attributes */ |
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| 331 | saved_flags = surface->flags&(SDL_SRCALPHA|SDL_RLEACCELOK); |
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| 332 | saved_alpha = surface->format->alpha; |
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| 333 | if ( (saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { |
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| 334 | SDL_SetAlpha(surface, 0, 0); |
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| 335 | } |
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[4597] | 336 | |
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[4458] | 337 | /* Copy the surface into the GL texture image */ |
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| 338 | area.x = 0; |
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| 339 | area.y = 0; |
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| 340 | area.w = surface->w; |
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| 341 | area.h = surface->h; |
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| 342 | SDL_BlitSurface(surface, &area, image, &area); |
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[4597] | 343 | |
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[4458] | 344 | /* Restore the alpha blending attributes */ |
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| 345 | if ( (saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { |
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| 346 | SDL_SetAlpha(surface, saved_flags, saved_alpha); |
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| 347 | } |
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[4597] | 348 | |
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[4458] | 349 | /* Create an OpenGL texture for the image */ |
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| 350 | glGenTextures(1, &texture); |
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| 351 | glBindTexture(GL_TEXTURE_2D, texture); |
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| 352 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
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| 353 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
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| 354 | glTexImage2D(GL_TEXTURE_2D, |
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[4597] | 355 | 0, |
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| 356 | GL_RGBA, |
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| 357 | w, h, |
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| 358 | 0, |
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| 359 | GL_RGBA, |
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| 360 | GL_UNSIGNED_BYTE, |
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| 361 | image->pixels); |
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[4458] | 362 | SDL_FreeSurface(image); /* No longer needed */ |
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[4597] | 363 | |
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[4458] | 364 | return texture; |
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| 365 | } |
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| 366 | |
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| 367 | /** |
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[4597] | 368 | \brief Quick utility function for texture creation |
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[4458] | 369 | \param input an integer |
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| 370 | \returns the next bigger 2^n-integer than input |
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| 371 | */ |
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| 372 | int Text::powerOfTwo(int input) |
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| 373 | { |
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| 374 | int value = 1; |
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[4597] | 375 | |
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[4458] | 376 | while ( value < input ) { |
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| 377 | value <<= 1; |
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| 378 | } |
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| 379 | return value; |
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| 380 | } |
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| 381 | |
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| 382 | |
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| 383 | //////////// |
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[3768] | 384 | /// FONT /// |
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| 385 | //////////// |
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| 386 | /** |
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[3766] | 387 | \brief constructs a Font |
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| 388 | \param fontFile the File to load the font from |
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[3767] | 389 | \param fontSize the Size of the Font in Pixels |
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| 390 | \param r Red value of the Font. |
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| 391 | \param g Green value of the Font. |
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| 392 | \param b Blue value of the Font. |
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[3766] | 393 | */ |
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[3767] | 394 | Font::Font(const char* fontFile, unsigned int fontSize, Uint8 r, Uint8 g, Uint8 b) |
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[3766] | 395 | { |
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[4597] | 396 | this->setClassID(CL_FONT, "Font"); |
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[3766] | 397 | // setting default values. |
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| 398 | this->font = NULL; |
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| 399 | this->fontFile = NULL; |
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| 400 | this->glyphArray = NULL; |
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[4597] | 401 | this->fastTextureID = 0; |
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| 402 | |
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[3766] | 403 | this->setSize(fontSize); |
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[3769] | 404 | |
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[3766] | 405 | this->setFont(fontFile); |
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| 406 | |
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[3840] | 407 | this->setStyle("c");//TTF_STYLE_NORMAL); |
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[3766] | 408 | |
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[3769] | 409 | this->setFastColor(r, g, b); |
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[3768] | 410 | |
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[3766] | 411 | this->fastTextureID = this->createFastTexture(); |
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| 412 | } |
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| 413 | |
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| 414 | /** |
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[3767] | 415 | \brief destructs a font |
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| 416 | */ |
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| 417 | Font::~Font(void) |
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| 418 | { |
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[3769] | 419 | // deleting the List of all Texts |
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[3767] | 420 | |
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[3769] | 421 | // deleting all Glyphs |
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[3767] | 422 | if (this->glyphArray) |
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| 423 | { |
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| 424 | for (int i = 0; i < FONT_HIGHEST_KNOWN_CHAR; i++) |
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[4597] | 425 | delete this->glyphArray[i]; |
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[3767] | 426 | delete []this->glyphArray; |
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| 427 | } |
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| 428 | |
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[3769] | 429 | // erease this font out of the memory. |
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[4536] | 430 | if (likely(this->font != NULL)) |
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[3767] | 431 | TTF_CloseFont(this->font); |
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| 432 | } |
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| 433 | |
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| 434 | /** |
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[3766] | 435 | \brief sets The Font. |
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| 436 | \param fontFile The file containing the font. |
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| 437 | \returns true if loaded, false if something went wrong, or if a font was loaded before. |
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| 438 | */ |
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| 439 | bool Font::setFont(const char* fontFile) |
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| 440 | { |
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| 441 | if (!this->fontFile) |
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| 442 | { |
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[4597] | 443 | this->setName(fontFile); |
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[3766] | 444 | this->fontFile = new char[strlen(fontFile)+1]; |
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| 445 | strcpy(this->fontFile, fontFile); |
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[4597] | 446 | |
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[3766] | 447 | this->font = TTF_OpenFont(this->fontFile, this->fontSize); |
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[4536] | 448 | if(!this->font) |
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[4597] | 449 | { |
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| 450 | PRINTF(1)("TTF_OpenFont: %s\n", TTF_GetError()); |
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| 451 | return false; |
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| 452 | } |
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[4518] | 453 | else |
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[4597] | 454 | return true; |
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[3766] | 455 | } |
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| 456 | else |
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| 457 | { |
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| 458 | PRINTF(2)("Font already initialized, unable to change it now.\n"); |
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| 459 | return false; |
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| 460 | } |
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| 461 | } |
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| 462 | |
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| 463 | /** |
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| 464 | \brief sets a specific renderStyle |
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| 465 | \param renderStyle the Style to render: a char-array containing: |
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| 466 | i: italic, b: bold, u, underline |
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| 467 | */ |
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[4458] | 468 | void Font::setStyle(const char* renderStyle) |
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[3766] | 469 | { |
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[3768] | 470 | this->renderStyle = TTF_STYLE_NORMAL; |
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[4597] | 471 | |
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[3766] | 472 | for (int i = 0; i < strlen(renderStyle); i++) |
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[4597] | 473 | if (strncmp(renderStyle+i, "b", 1) == 0) |
---|
[3768] | 474 | this->renderStyle |= TTF_STYLE_BOLD; |
---|
[3766] | 475 | else if (strncmp(renderStyle+i, "i", 1) == 0) |
---|
[3768] | 476 | this->renderStyle |= TTF_STYLE_ITALIC; |
---|
[4597] | 477 | else if (strncmp(renderStyle+i, "u", 1) == 0) |
---|
[3768] | 478 | this->renderStyle |= TTF_STYLE_UNDERLINE; |
---|
[3766] | 479 | |
---|
[4536] | 480 | if (likely(this->font != NULL)) |
---|
[3768] | 481 | TTF_SetFontStyle(this->font, this->renderStyle); |
---|
[3766] | 482 | else |
---|
| 483 | PRINTF(2)("Font was not initialized, please do so before setting the Font-Style.\n"); |
---|
| 484 | } |
---|
| 485 | |
---|
| 486 | /** |
---|
| 487 | \brief Sets a new Size to the font |
---|
| 488 | \param fontSize The new Size in pixels. |
---|
| 489 | */ |
---|
| 490 | void Font::setSize(unsigned int fontSize) |
---|
| 491 | { |
---|
| 492 | this->fontSize = fontSize; |
---|
| 493 | } |
---|
| 494 | |
---|
| 495 | /** |
---|
| 496 | \brief sets a new color to the font |
---|
| 497 | \param r Red |
---|
| 498 | \param g Green |
---|
| 499 | \param b Blue |
---|
| 500 | */ |
---|
[3769] | 501 | void Font::setFastColor(Uint8 r, Uint8 g, Uint8 b) |
---|
[3766] | 502 | { |
---|
[3769] | 503 | this->fastColor.r = r; |
---|
| 504 | this->fastColor.g = g; |
---|
| 505 | this->fastColor.b = b; |
---|
[3766] | 506 | } |
---|
| 507 | |
---|
| 508 | /** |
---|
| 509 | \returns the maximum height of the Font, if the font was initialized, 0 otherwise |
---|
| 510 | */ |
---|
| 511 | int Font::getMaxHeight(void) |
---|
| 512 | { |
---|
[4536] | 513 | if (likely (this->font != NULL)) |
---|
[3766] | 514 | return TTF_FontHeight(this->font); |
---|
| 515 | else |
---|
| 516 | return 0; |
---|
| 517 | } |
---|
| 518 | |
---|
| 519 | /** |
---|
| 520 | \returns the maximum ascent of the Font, if the font was initialized, 0 otherwise |
---|
| 521 | |
---|
| 522 | the ascent is the pixels of the font above the baseline |
---|
| 523 | */ |
---|
| 524 | int Font::getMaxAscent(void) |
---|
| 525 | { |
---|
[4536] | 526 | if (likely(this->font != NULL)) |
---|
[3766] | 527 | return TTF_FontAscent(this->font); |
---|
| 528 | else |
---|
| 529 | return 0; |
---|
| 530 | } |
---|
| 531 | |
---|
| 532 | /** |
---|
| 533 | \returns the maximum descent of the Font, if the font was initialized, 0 otherwise |
---|
| 534 | |
---|
| 535 | the descent is the pixels of the font below the baseline |
---|
| 536 | */ |
---|
| 537 | int Font::getMaxDescent(void) |
---|
| 538 | { |
---|
[4536] | 539 | if (likely(this->font != NULL)) |
---|
[3766] | 540 | return TTF_FontDescent(this->font); |
---|
| 541 | else |
---|
| 542 | return 0; |
---|
| 543 | } |
---|
| 544 | |
---|
| 545 | /** |
---|
| 546 | \param character The character to get info about. |
---|
| 547 | \returns a Glyph struct of a character. This Glyph is a pointer, |
---|
| 548 | and MUST be deleted by the user.. |
---|
| 549 | |
---|
[4597] | 550 | This only works for horizontal fonts. see |
---|
[3766] | 551 | http://freetype.sourceforge.net/freetype2/docs/tutorial/step2.html |
---|
| 552 | for more info about vertical Fonts |
---|
| 553 | */ |
---|
| 554 | Glyph* Font::getGlyphMetrics(Uint16 character) |
---|
| 555 | { |
---|
| 556 | Glyph* rg = new Glyph; |
---|
| 557 | rg->character = character; |
---|
[4536] | 558 | if (likely (this->font!= NULL)) |
---|
| 559 | TTF_GlyphMetrics(this->font, rg->character, |
---|
[4597] | 560 | &rg->minX, &rg->maxX, |
---|
| 561 | &rg->minY, &rg->maxY, |
---|
| 562 | &rg->advance); |
---|
[3766] | 563 | rg->height = rg->maxY - rg->minY; |
---|
| 564 | rg->width = rg->maxX - rg->minX; |
---|
| 565 | rg->bearingX = (rg->advance - rg->width) / 2; |
---|
| 566 | rg->bearingY = rg->maxY; |
---|
| 567 | return rg; |
---|
| 568 | } |
---|
| 569 | |
---|
| 570 | GLuint Font::createFastTexture(void) |
---|
| 571 | { |
---|
[4597] | 572 | /* interesting GLYPHS: |
---|
[3776] | 573 | * 32: space |
---|
[3766] | 574 | * 33-47: Special Characters. |
---|
| 575 | * 48-57: 0-9 |
---|
| 576 | * 58-63: some more special chars (minor) |
---|
| 577 | * 65-90: A-Z |
---|
| 578 | * 97-122: a-z |
---|
| 579 | */ |
---|
[3776] | 580 | int numberOfGlyphs = 91; |
---|
[3766] | 581 | |
---|
[3776] | 582 | this->initGlyphs(32, numberOfGlyphs); |
---|
| 583 | this->glyphArray[32]->width = fontSize/3; //!< \todo find out the real size of a Space |
---|
[3766] | 584 | |
---|
| 585 | int rectSize = this->findOptimalFastTextureSize(); |
---|
| 586 | |
---|
| 587 | // setting default values. (maybe not needed afterwards) |
---|
| 588 | SDL_Color tmpColor; tmpColor.r = tmpColor.g = tmpColor.b = 0; |
---|
| 589 | // Surface definition. |
---|
| 590 | SDL_Rect tmpRect; // this represents a Rectangle for blitting. |
---|
| 591 | SDL_Surface* tmpSurf = SDL_CreateRGBSurface(SDL_SWSURFACE, |
---|
[4597] | 592 | rectSize, rectSize, |
---|
| 593 | 32, |
---|
[3766] | 594 | #if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ |
---|
[4597] | 595 | 0x000000FF, |
---|
| 596 | 0x0000FF00, |
---|
| 597 | 0x00FF0000, |
---|
| 598 | 0xFF000000 |
---|
[3766] | 599 | #else |
---|
[4597] | 600 | 0xFF000000, |
---|
| 601 | 0x00FF0000, |
---|
| 602 | 0x0000FF00, |
---|
| 603 | 0x000000FF |
---|
[3766] | 604 | #endif |
---|
[4597] | 605 | ); |
---|
[3766] | 606 | tmpRect.x = 0; tmpRect.y = 0; tmpRect.w = tmpSurf->w; tmpRect.h = tmpSurf->h; |
---|
| 607 | SDL_SetClipRect(tmpSurf, &tmpRect); |
---|
| 608 | int maxLineHeight = 0; |
---|
| 609 | |
---|
| 610 | // all the interessting Glyphs |
---|
[4536] | 611 | for (int i = 0; i <= 127; i++) |
---|
[3766] | 612 | { |
---|
| 613 | SDL_Surface* glyphSurf = NULL; |
---|
| 614 | Glyph* tmpGlyph; |
---|
| 615 | |
---|
| 616 | if (tmpGlyph = this->glyphArray[i]) |
---|
[4597] | 617 | { |
---|
| 618 | if (tmpGlyph->height > maxLineHeight) |
---|
| 619 | maxLineHeight = tmpGlyph->height; |
---|
[3766] | 620 | |
---|
[4597] | 621 | if (tmpRect.x+tmpGlyph->width > tmpSurf->w) |
---|
| 622 | { |
---|
| 623 | tmpRect.x = 0; |
---|
[4683] | 624 | tmpRect.y = tmpRect.y + maxLineHeight + 2; |
---|
[4597] | 625 | maxLineHeight = 0; |
---|
| 626 | } |
---|
| 627 | if (tmpRect.y + maxLineHeight > tmpSurf->h) |
---|
| 628 | { |
---|
| 629 | PRINTF(1)("Protection, so font cannot write over the boundraries error (this should not heappen\n"); |
---|
| 630 | break; |
---|
| 631 | } |
---|
| 632 | // reading in the new Glyph |
---|
| 633 | if (likely(this->font != NULL)) |
---|
| 634 | glyphSurf = TTF_RenderGlyph_Blended(this->font, i, this->fastColor); |
---|
| 635 | if( glyphSurf != NULL ) |
---|
| 636 | { |
---|
[3766] | 637 | |
---|
[4597] | 638 | SDL_SetAlpha(glyphSurf, 0, 0); |
---|
[3766] | 639 | |
---|
[4597] | 640 | SDL_BlitSurface(glyphSurf, NULL, tmpSurf, &tmpRect); |
---|
| 641 | TexCoord tmpTexCoord; |
---|
| 642 | tmpTexCoord.minU = (float)tmpRect.x/(float)tmpSurf->w; |
---|
[4683] | 643 | tmpTexCoord.maxU = (float)(tmpRect.x +1 +tmpGlyph->width)/(float)tmpSurf->w; |
---|
[4597] | 644 | tmpTexCoord.minV = (float)tmpRect.y/(float)tmpSurf->w; |
---|
| 645 | tmpTexCoord.maxV = (float)(tmpRect.y+tmpGlyph->height)/(float)tmpSurf->w; |
---|
| 646 | tmpGlyph->displayList = glGenLists(1); |
---|
[3766] | 647 | |
---|
[4597] | 648 | glNewList(tmpGlyph->displayList, GL_COMPILE); |
---|
| 649 | glBegin(GL_QUADS); |
---|
| 650 | glTexCoord2f(tmpTexCoord.minU, tmpTexCoord.minV); |
---|
| 651 | glVertex2d(0, 0); |
---|
| 652 | glTexCoord2f(tmpTexCoord.minU, tmpTexCoord.maxV); |
---|
| 653 | glVertex2d(0, tmpGlyph->height); |
---|
| 654 | glTexCoord2f(tmpTexCoord.maxU, tmpTexCoord.maxV); |
---|
| 655 | glVertex2d(tmpGlyph->width, tmpGlyph->height); |
---|
| 656 | glTexCoord2f(tmpTexCoord.maxU, tmpTexCoord.minV); |
---|
| 657 | glVertex2d(tmpGlyph->width, 0); |
---|
| 658 | glEnd(); |
---|
| 659 | glEndList(); |
---|
| 660 | SDL_FreeSurface(glyphSurf); |
---|
[3766] | 661 | |
---|
[4683] | 662 | tmpRect.x += tmpGlyph->width + 2; |
---|
[4597] | 663 | |
---|
| 664 | // Outputting Glyphs to BMP-files. |
---|
| 665 | /* |
---|
| 666 | char outname[64]; |
---|
| 667 | if (i < 10) |
---|
| 668 | sprintf( outname, "glyph-00%d.bmp", i ); |
---|
| 669 | else if (i <100) |
---|
| 670 | sprintf( outname, "glyph-0%d.bmp", i ); |
---|
| 671 | else |
---|
| 672 | sprintf( outname, "glyph-%d.bmp", i ); |
---|
| 673 | SDL_SaveBMP(tmpSurf, outname); |
---|
| 674 | */ |
---|
| 675 | } |
---|
| 676 | } |
---|
[3766] | 677 | } |
---|
[3776] | 678 | |
---|
[3766] | 679 | GLuint texture; |
---|
| 680 | glGenTextures(1, &texture); |
---|
| 681 | glBindTexture(GL_TEXTURE_2D, texture); |
---|
| 682 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
---|
| 683 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
---|
| 684 | glTexImage2D(GL_TEXTURE_2D, |
---|
[4597] | 685 | 0, |
---|
| 686 | GL_RGBA, |
---|
| 687 | tmpSurf->w, tmpSurf->h, |
---|
| 688 | 0, |
---|
| 689 | GL_RGBA, |
---|
| 690 | GL_UNSIGNED_BYTE, |
---|
| 691 | tmpSurf->pixels); |
---|
[3766] | 692 | SDL_FreeSurface(tmpSurf); |
---|
| 693 | return texture; |
---|
| 694 | } |
---|
| 695 | |
---|
| 696 | /** |
---|
| 697 | \brief stores Glyph Metrics in an Array. |
---|
| 698 | \param from The Glyph to start from. |
---|
| 699 | \param count The number of Glyphs to start From. |
---|
| 700 | */ |
---|
| 701 | void Font::initGlyphs(Uint16 from, Uint16 count) |
---|
| 702 | { |
---|
| 703 | /* initialize the Array, and set all its entries to NULL |
---|
| 704 | * only if the Glyph-array has not been initialized |
---|
| 705 | */ |
---|
| 706 | if (!this->glyphArray) |
---|
| 707 | { |
---|
| 708 | this->glyphArray = new Glyph*[FONT_HIGHEST_KNOWN_CHAR]; |
---|
| 709 | for (int i = 0; i < FONT_HIGHEST_KNOWN_CHAR; i++) |
---|
[4597] | 710 | this->glyphArray[i] = NULL; |
---|
[3766] | 711 | } |
---|
[4597] | 712 | |
---|
[3766] | 713 | Uint16 lastGlyph = from + count; |
---|
[4597] | 714 | |
---|
[3766] | 715 | for (int i = from; i <= lastGlyph; i++) |
---|
| 716 | { |
---|
| 717 | // setting up all the Glyphs we like. |
---|
| 718 | glyphArray[i] = getGlyphMetrics(i); |
---|
| 719 | } |
---|
| 720 | return; |
---|
| 721 | } |
---|
| 722 | |
---|
| 723 | /** |
---|
| 724 | \returns the optimal size to use as the texture size |
---|
| 725 | |
---|
[4597] | 726 | \todo: this algorithm can be a lot more faster, althought it does |
---|
[3766] | 727 | not really matter within the init-context, and 128 glyphs. |
---|
| 728 | |
---|
[4597] | 729 | This function searches for a 2^n sizes texture-size, this is for |
---|
[4536] | 730 | openGL-version < 1.2 compatibility ( and because it is realy easy like this :)) |
---|
[3766] | 731 | */ |
---|
| 732 | int Font::findOptimalFastTextureSize(void) |
---|
| 733 | { |
---|
| 734 | int i; |
---|
| 735 | int x,y; // the counters |
---|
| 736 | int maxLineHeight; |
---|
| 737 | int size = 32; // starting Value, we have to start somewhere 32 seems reasonable. |
---|
| 738 | bool sizeOK = false; |
---|
| 739 | Glyph* tmpGlyph; |
---|
| 740 | |
---|
| 741 | while (!sizeOK) |
---|
| 742 | { |
---|
| 743 | x = 0; y = 0; |
---|
| 744 | maxLineHeight = 0; |
---|
| 745 | for (i = 0; i < FONT_HIGHEST_KNOWN_CHAR; i++) |
---|
[4597] | 746 | { |
---|
| 747 | if(tmpGlyph = this->glyphArray[i]) |
---|
| 748 | { |
---|
| 749 | // getting the height of the highest Glyph in the Line. |
---|
| 750 | if (tmpGlyph->height > maxLineHeight) |
---|
| 751 | maxLineHeight = tmpGlyph->height; |
---|
[3766] | 752 | |
---|
[4597] | 753 | if (x + tmpGlyph->width > size) |
---|
| 754 | { |
---|
| 755 | x = 0; |
---|
| 756 | y = y + maxLineHeight; |
---|
| 757 | maxLineHeight = 0; |
---|
| 758 | } |
---|
| 759 | if (y + maxLineHeight + 1 > size) |
---|
| 760 | break; |
---|
| 761 | x += tmpGlyph->width + 1; |
---|
[3766] | 762 | |
---|
[4597] | 763 | } |
---|
| 764 | } |
---|
[3766] | 765 | if (i == FONT_HIGHEST_KNOWN_CHAR) |
---|
[4597] | 766 | sizeOK = true; |
---|
[3766] | 767 | else |
---|
[4597] | 768 | size *= 2; |
---|
[3766] | 769 | } |
---|
| 770 | return size; |
---|
| 771 | } |
---|
| 772 | |
---|
| 773 | |
---|
| 774 | /** |
---|
| 775 | \brief a simple function to get some interesting information about this class |
---|
| 776 | */ |
---|
| 777 | void Font::debug(void) |
---|
| 778 | { |
---|
| 779 | // print the loaded font's style |
---|
| 780 | int style; |
---|
[4536] | 781 | if (likely(this->font != NULL)) |
---|
| 782 | style = TTF_GetFontStyle(this->font); |
---|
[3766] | 783 | PRINTF(0)("The font style is:"); |
---|
| 784 | if(style==TTF_STYLE_NORMAL) |
---|
| 785 | PRINTF(0)(" normal"); |
---|
| 786 | else { |
---|
| 787 | if(style&TTF_STYLE_BOLD) |
---|
| 788 | PRINTF(0)(" bold"); |
---|
| 789 | if(style&TTF_STYLE_ITALIC) |
---|
| 790 | PRINTF(0)(" italic"); |
---|
| 791 | if(style&TTF_STYLE_UNDERLINE) |
---|
| 792 | PRINTF(0)(" underline"); |
---|
| 793 | } |
---|
| 794 | PRINTF(0)("\n"); |
---|
| 795 | } |
---|
| 796 | |
---|
| 797 | |
---|
[3768] | 798 | /////////////////// |
---|
| 799 | /// TEXT-ENGINE /// |
---|
| 800 | /////////////////// |
---|
[3766] | 801 | /** |
---|
[3655] | 802 | \brief standard constructor |
---|
| 803 | */ |
---|
[4597] | 804 | TextEngine::TextEngine () |
---|
[3655] | 805 | { |
---|
[4320] | 806 | this->setClassID(CL_TEXT_ENGINE, "TextEngine"); |
---|
[4597] | 807 | this->setName("TextEngine"); |
---|
[3769] | 808 | this->enableFonts(); |
---|
[3655] | 809 | |
---|
[3769] | 810 | this->textList = new tList<Text>; |
---|
[3655] | 811 | } |
---|
| 812 | |
---|
| 813 | /** |
---|
| 814 | \brief the singleton reference to this class |
---|
| 815 | */ |
---|
[3766] | 816 | TextEngine* TextEngine::singletonRef = NULL; |
---|
[3655] | 817 | |
---|
| 818 | /** |
---|
| 819 | \brief standard deconstructor |
---|
| 820 | |
---|
| 821 | */ |
---|
[4597] | 822 | TextEngine::~TextEngine () |
---|
[3655] | 823 | { |
---|
[3769] | 824 | this->disableFonts(); |
---|
[4597] | 825 | |
---|
[3769] | 826 | delete this->textList; |
---|
| 827 | |
---|
[3766] | 828 | TextEngine::singletonRef = NULL; |
---|
[3655] | 829 | } |
---|
[3766] | 830 | |
---|
| 831 | /** |
---|
| 832 | \brief function to enable TTF_Fonts |
---|
| 833 | */ |
---|
| 834 | void TextEngine::enableFonts(void) |
---|
| 835 | { |
---|
| 836 | if (!TTF_WasInit()) |
---|
| 837 | { |
---|
| 838 | if(TTF_Init()==-1) |
---|
[4597] | 839 | PRINTF(1)("TTF_Init: %s\n", TTF_GetError()); |
---|
[3766] | 840 | |
---|
| 841 | TextEngine::checkVersion(); |
---|
| 842 | } |
---|
| 843 | else |
---|
| 844 | PRINTF(4)("Fonts already initialized\n"); |
---|
| 845 | } |
---|
| 846 | |
---|
| 847 | /** |
---|
| 848 | \brief function to disable TTF_fonts |
---|
| 849 | */ |
---|
| 850 | void TextEngine::disableFonts(void) |
---|
| 851 | { |
---|
| 852 | if (TTF_WasInit()) |
---|
| 853 | { |
---|
| 854 | TTF_Quit(); |
---|
| 855 | } |
---|
| 856 | else |
---|
| 857 | PRINTF(4)("Fonts were not initialized.\n"); |
---|
| 858 | } |
---|
| 859 | |
---|
| 860 | /** |
---|
[3769] | 861 | \brief creates a new Text with a certain font. |
---|
| 862 | \see Font::Font |
---|
| 863 | \see Text::Text |
---|
| 864 | */ |
---|
[3773] | 865 | Text* TextEngine::createText(const char* fontFile, unsigned int fontSize, int textType, Uint8 r, Uint8 g, Uint8 b) |
---|
[3769] | 866 | { |
---|
| 867 | Font* tmpFont; |
---|
| 868 | Text* newText; |
---|
[3775] | 869 | Vector tmpVec; |
---|
[3769] | 870 | |
---|
[3775] | 871 | tmpVec = Vector(r, g, b); |
---|
| 872 | tmpFont = (Font*)ResourceManager::getInstance()->load(fontFile, TTF, RP_GAME, &fontSize, &tmpVec); |
---|
[3769] | 873 | if (!tmpFont) |
---|
| 874 | { |
---|
| 875 | PRINTF(2)("Font %s could not be loaded, probably file not found\n", fontFile); |
---|
| 876 | return NULL; |
---|
| 877 | } |
---|
| 878 | |
---|
| 879 | newText = new Text(tmpFont, TEXT_DYNAMIC); |
---|
[3770] | 880 | textList->add(newText); |
---|
| 881 | |
---|
| 882 | return newText; |
---|
[3769] | 883 | } |
---|
| 884 | |
---|
[3772] | 885 | /** |
---|
| 886 | \brief removes a Text from the List |
---|
[4458] | 887 | \param text: the text to delete |
---|
[3773] | 888 | |
---|
| 889 | this only ereases allocated memory, and removes the text |
---|
| 890 | The normal way to call it, is through "delete text;" |
---|
| 891 | So you do not have to concetn yourselves with this. |
---|
[3772] | 892 | */ |
---|
| 893 | void TextEngine::deleteText(Text* text) |
---|
| 894 | { |
---|
| 895 | ResourceManager::getInstance()->unload(text->font); |
---|
| 896 | textList->remove(text); |
---|
| 897 | } |
---|
| 898 | |
---|
| 899 | /** |
---|
[3774] | 900 | \brief deletes all the Text, and tries to delete all allocated fonts |
---|
| 901 | */ |
---|
| 902 | void TextEngine::flush(void) |
---|
| 903 | { |
---|
| 904 | tIterator<Text>* textIterator = textList->getIterator(); |
---|
| 905 | Text* text = textIterator->nextElement(); |
---|
| 906 | while( text != NULL) |
---|
| 907 | { |
---|
| 908 | delete text; |
---|
| 909 | text = textIterator->nextElement(); |
---|
| 910 | } |
---|
| 911 | delete textIterator; |
---|
| 912 | } |
---|
| 913 | |
---|
| 914 | /** |
---|
[3772] | 915 | \brief draws all the Texts that have been initialized |
---|
| 916 | */ |
---|
[3773] | 917 | void TextEngine::draw(void) const |
---|
[3769] | 918 | { |
---|
[3844] | 919 | // entering 3D-mode |
---|
| 920 | GraphicsEngine::enter2DMode(); |
---|
| 921 | // drawing all the texts |
---|
[3769] | 922 | tIterator<Text>* textIterator = textList->getIterator(); |
---|
| 923 | Text* text = textIterator->nextElement(); |
---|
| 924 | while( text != NULL) |
---|
| 925 | { |
---|
| 926 | text->draw(); |
---|
| 927 | text = textIterator->nextElement(); |
---|
| 928 | } |
---|
| 929 | delete textIterator; |
---|
[3844] | 930 | // retruning to the previous mode |
---|
| 931 | GraphicsEngine::leave2DMode(); |
---|
[3769] | 932 | } |
---|
| 933 | |
---|
| 934 | /** |
---|
[3774] | 935 | \brief outputs some nice Debug information |
---|
[4597] | 936 | |
---|
[3774] | 937 | \todo there should also be something outputted about Font |
---|
| 938 | */ |
---|
| 939 | void TextEngine::debug(void) const |
---|
| 940 | { |
---|
| 941 | PRINT(0)("+-------------------------------+\n"); |
---|
| 942 | PRINT(0)("+ TEXT ENGINE DEBUG INFORMATION +\n"); |
---|
| 943 | PRINT(0)("+-------------------------------+\n"); |
---|
| 944 | PRINT(0)("Reference: %p; Text Counts: %d\n", this, this->textList->getSize()); |
---|
[4597] | 945 | |
---|
[3774] | 946 | tIterator<Text>* textIterator = textList->getIterator(); |
---|
| 947 | Text* text = textIterator->nextElement(); |
---|
| 948 | while( text != NULL) |
---|
| 949 | { |
---|
| 950 | text->debug(); |
---|
| 951 | text = textIterator->nextElement(); |
---|
| 952 | } |
---|
| 953 | delete textIterator; |
---|
| 954 | PRINT(0)("+---------------------------TE--+\n"); |
---|
| 955 | } |
---|
| 956 | |
---|
| 957 | |
---|
| 958 | /** |
---|
[3766] | 959 | \brief checks if the compiled version and the local version of SDL_ttf match. |
---|
| 960 | \returns true if match, false otherwise |
---|
| 961 | */ |
---|
| 962 | bool TextEngine::checkVersion(void) |
---|
| 963 | { |
---|
| 964 | SDL_version compile_version; |
---|
| 965 | SDL_version link_version; |
---|
| 966 | TTF_VERSION(&compile_version); |
---|
| 967 | link_version = *TTF_Linked_Version(); |
---|
| 968 | |
---|
| 969 | if (compile_version.major == link_version.major && |
---|
| 970 | compile_version.minor == link_version.minor && |
---|
| 971 | compile_version.patch == link_version.patch) |
---|
| 972 | { |
---|
| 973 | return true; |
---|
| 974 | } |
---|
| 975 | else |
---|
| 976 | { |
---|
[4597] | 977 | PRINTF(2)("compiled with SDL_ttf version: %d.%d.%d\n", |
---|
| 978 | compile_version.major, |
---|
| 979 | compile_version.minor, |
---|
| 980 | compile_version.patch); |
---|
| 981 | |
---|
| 982 | PRINTF(2)("running with SDL_ttf version: %d.%d.%d\n", |
---|
| 983 | link_version.major, |
---|
| 984 | link_version.minor, |
---|
| 985 | link_version.patch); |
---|
[3766] | 986 | return false; |
---|
| 987 | } |
---|
| 988 | } |
---|