79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/**
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* Copyright (c) 2021 Dominic Masters
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*
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* This software is released under the MIT License.
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* https://opensource.org/licenses/MIT
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*/
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#pragma once
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#include "../libs.h"
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#include "texture.h"
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/** Which character (ASCII) to start the font from */
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#define FONT_FIRST_CHAR 32
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/** How many characters (after the first char) to generate */
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#define FONT_NUM_CHARS 96
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/** Width of the loaded font texture */
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#define FONT_TEXTURE_WIDTH 1024
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/** Height of the loaded font texture */
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#define FONT_TEXTURE_HEIGHT FONT_TEXTURE_WIDTH
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/** Refer to STBTT docs for OpenGL Fill Mode v d3d Fill Modes */
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#define FONT_FILL_MODE 1
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/** Passed to STBTT for scaling the font, essentially the font resolution */
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#define FONT_TEXTURE_SIZE 64
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/** Default Font Size (on which all font scales are based) */
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#define FONT_SIZE_DEFAULT (FONT_TEXTURE_SIZE / 2)
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// Chars
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#define FONT_NEWLINE '\n'
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#define FONT_SPACE ' '
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// Heights
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#define FONT_LINE_HEIGHT FONT_TEXTURE_SIZE*0.75f
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#define FONT_INITIAL_LINE FONT_LINE_HEIGHT*0.75f
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#define FONT_SPACE_SIZE FONT_TEXTURE_SIZE*0.45f
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/** Maximum number of characters a font text info can hold. */
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#define FONT_TEXT_INFO_CHARS_MAX 1024
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/** Maximum number of newlines that a font text info can hold. */
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#define FONT_TEXT_INFO_LINES_MAX FONT_TEXT_INFO_CHARS_MAX/50
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/** Representation of a font that can be used to render text */
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typedef struct {
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texture_t texture;
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stbtt_bakedchar characterData[FONT_NUM_CHARS];
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} font_t;
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typedef struct {
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/** What (real character) index the line starts at */
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int32_t start;
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/** How many (real) characters the line is in length */
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int32_t length;
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} fonttextinfoline_t;
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typedef struct {
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/** How many raw chars are in the string */
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int32_t length;
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/** How many real characters (non whitespace) are in the string */
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int32_t realLength;
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/** How many lines is the string? Trailing newlines will count */
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int32_t lineCount;
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/** The real character info for each line */
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fonttextinfoline_t lines[FONT_TEXT_INFO_LINES_MAX];
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/** Dimensions of the string */
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float width, height;
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/** Array of precalculated quads */
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stbtt_aligned_quad quads[FONT_TEXT_INFO_CHARS_MAX];
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} fonttextinfo_t; |