[3478] | 1 | /*! |
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| 2 | \file glfont.h |
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| 3 | \brief Handles the display of glFonts. |
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| 4 | */ |
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| 5 | |
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| 6 | #ifndef _GLFONT_H |
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| 7 | #define _GLFONT_H |
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| 8 | |
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[3682] | 9 | #include "glincl.h" |
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[3691] | 10 | #include "SDL_ttf.h" |
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[3478] | 11 | |
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[3714] | 12 | // FORWARD DECLARATION |
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| 13 | template<class T> class tList; |
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[3691] | 14 | |
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[3693] | 15 | /* some default values */ |
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[3707] | 16 | #define FONT_DEFAULT_SIZE 50 //!< default size of the Text |
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[3694] | 17 | #define FONT_DEFAULT_TEXT "orxonox 1234567890" //!< some default text to display |
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| 18 | #define FONT_DEFAULT_COLOR_R 256 //!< the default red part (color) of the text |
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| 19 | #define FONT_DEFAULT_COLOR_G 256 //!< the default red green (color) of the text |
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| 20 | #define FONT_DEFAULT_COLOR_B 256 //!< the default red blue (color) of the text |
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[3700] | 21 | #define FONT_NUM_COLORS 256 //!< The number of colors. |
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[3693] | 22 | |
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| 23 | |
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| 24 | |
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[3691] | 25 | //! A struct for handling glyphs |
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[3694] | 26 | /** |
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| 27 | a Glyph is one letter of a certain font |
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| 28 | */ |
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| 29 | struct Glyph |
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[3691] | 30 | { |
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[3694] | 31 | Uint16 character; //!< The character |
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| 32 | int minX; //!< The minimum distance from the origin in X |
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| 33 | int maxX; //!< The maximum distance from the origin in X |
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| 34 | int minY; //!< The minimum distance from the origin in Y |
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| 35 | int maxY; //!< The maximum distance from the origin in Y |
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| 36 | int width; //!< The width of the Glyph |
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| 37 | int height; //!< The height of the Glyph |
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| 38 | int bearingX; //!< How much is right of the Origin |
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| 39 | int bearingY; //!< How much is above the Origin |
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| 40 | int advance; //!< How big a Glyph would be in monospace-mode |
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[3691] | 41 | }; |
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| 42 | |
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[3700] | 43 | //! A Struct to handel Texture Coordinates for quads |
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| 44 | struct TexCoord |
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| 45 | { |
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| 46 | float minU; //!< The minimum U-Coordinate |
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| 47 | float maxU; //!< The maximum U-Coordinate |
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| 48 | float minV; //!< The minimum V-Coordinate |
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| 49 | float maxV; //!< The maximum V-Coordinate |
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| 50 | }; |
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| 51 | |
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[3694] | 52 | //! A class to handle a Font |
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[3478] | 53 | class GLFont |
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| 54 | { |
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| 55 | public: |
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[3696] | 56 | GLFont(const char* fontFile); |
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[3691] | 57 | virtual ~GLFont(); |
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[3478] | 58 | |
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[3691] | 59 | static void enableFonts(void); |
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| 60 | static void disableFonts(void); |
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[3478] | 61 | |
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| 62 | bool setFont(const char* fontFile); |
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| 63 | void setText(const char* text); |
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| 64 | |
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[3691] | 65 | void setStyle(char* renderStyle); |
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[3692] | 66 | void setSize(unsigned int fontSize); |
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| 67 | void setColor(Uint8 r, Uint8 g, Uint8 b); |
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[3478] | 68 | void setPosition(int x, int y); |
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[3692] | 69 | |
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| 70 | void createTexture(void); |
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[3478] | 71 | |
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[3693] | 72 | virtual void draw(void); |
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| 73 | |
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[3478] | 74 | private: |
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[3691] | 75 | // information about the Font |
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[3696] | 76 | TTF_Font* font; //!< The font we use for this. |
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| 77 | char* fontFile; //!< The fontfile from whitch the font was loaded. |
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[3714] | 78 | unsigned int fontSize; //!< The size of the font in pixels. each Font has one size. |
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[3691] | 79 | |
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[3714] | 80 | //! Represents one textElement. |
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| 81 | struct Text |
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| 82 | { |
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| 83 | char* text; //!< The text to display |
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| 84 | SDL_Color color; //!< The color of the font. |
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| 85 | // placement in openGL |
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| 86 | GLuint texture; //!< A GL-texture to hold the text |
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| 87 | TexCoord texCoord; //!< Texture-coordinates \todo fix this to have a struct |
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| 88 | SDL_Rect textPosSize; //!< An SDL-Rectangle representing the position and size of the Text on the screen. |
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| 89 | int renderStyle; //!< The Renderstyle |
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| 90 | }; |
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| 91 | tList<Text>* textList; |
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| 92 | Text* currentText; |
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[3478] | 93 | |
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[3693] | 94 | bool init(const char* fontFile, unsigned int fontSize = FONT_DEFAULT_SIZE); |
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[3691] | 95 | int getMaxHeight(void); |
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| 96 | int getMaxAscent(void); |
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| 97 | int getMaxDescent(void); |
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[3694] | 98 | Glyph getGlyphMetrics(Uint16 character); |
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[3478] | 99 | |
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| 100 | static bool ttfInitialized; |
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| 101 | |
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[3682] | 102 | void enter2DMode(void); |
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| 103 | void leave2DMode(void); |
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| 104 | |
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[3691] | 105 | static bool checkVersion(void); |
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| 106 | |
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[3700] | 107 | GLuint loadTexture(SDL_Surface* surface, TexCoord* texCoord); |
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[3682] | 108 | |
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[3691] | 109 | static int powerOfTwo(int input); |
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[3682] | 110 | |
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[3691] | 111 | void debug(void); |
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| 112 | |
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[3478] | 113 | }; |
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| 114 | |
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| 115 | #endif /* _GLFONT_H */ |
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