322edd0dce
* wip font rendering stuff; hashtable monstrosity is temporary * various text rendering fixes/improvements * HashTables™ 3.0 * Add some comments to aid navigating the hashtable macro maze * overhaul text rendering API; add default and example shaders * text: implement text_render for spellcard effect; misc fixes * README: update dependencies Bye SDL_ttf, hello freetype2. * text_draw: fix resolution/scale-dependent bugs * make text_draw fallback to the current shader, fix hud and stagetext * repair the bgm loading * fix spell practice mode * fix walloftext forgot one site of text_draw earlier * fix wrapped text rendering * fix and simplify the hud text shader * dynamic glyph cache * implement font size change on window resize/quality setting change/etc. * rename text shaders for consistency * preloads for fonts and text shaders * make the stagetext shader look somewhat better * text_render: attempt to normalize height * small improvement for stagetext
121 lines
2.6 KiB
C
121 lines
2.6 KiB
C
/*
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* This software is licensed under the terms of the MIT-License
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* See COPYING for further information.
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* ---
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* Copyright (c) 2011-2018, Lukas Weber <laochailan@web.de>.
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* Copyright (c) 2012-2018, Andrei Alexeyev <akari@alienslab.net>.
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*/
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#pragma once
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#include "taisei.h"
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#include "sprite.h"
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#include "hashtable.h"
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#include "resource.h"
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#include "renderer/api.h"
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typedef enum {
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ALIGN_LEFT = 0, // must be 0
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ALIGN_CENTER,
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ALIGN_RIGHT,
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} Alignment;
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typedef ulong charcode_t;
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typedef struct Font Font;
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typedef struct FontMetrics {
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int ascent;
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int descent;
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int max_glyph_height;
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int lineskip;
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double scale;
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} FontMetrics;
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typedef struct GlyphMetrics {
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int bearing_x;
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int bearing_y;
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int width;
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int height;
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int advance;
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} GlyphMetrics;
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// TODO: maybe move this into util/geometry.h
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typedef struct BBox {
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struct {
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int min;
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int max;
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} x;
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struct {
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int min;
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int max;
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} y;
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} BBox;
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typedef void (*GlyphDrawCallback)(Font *font, charcode_t charcode, SpriteParams *spr_params, void *userdata);
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typedef struct TextParams {
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const char *font;
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Font *font_ptr;
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const char *shader;
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ShaderProgram *shader_ptr;
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struct {
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GlyphDrawCallback func;
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void *userdata;
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} glyph_callback;
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struct { double x, y; } pos;
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Color color;
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float custom;
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BlendMode blend;
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Alignment align;
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} TextParams;
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Font* get_font(const char *font)
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attr_nonnull(1);
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ShaderProgram* text_get_default_shader(void)
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attr_returns_nonnull;
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const FontMetrics* font_get_metrics(Font *font)
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attr_nonnull(1) attr_returns_nonnull;
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double font_get_lineskip(Font *font)
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attr_nonnull(1);
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const GlyphMetrics* font_get_char_metrics(Font *font, charcode_t c)
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attr_nonnull(1);
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double text_draw(const char *text, const TextParams *params)
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attr_nonnull(1, 2);
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double text_draw_wrapped(const char *text, double max_width, const TextParams *params)
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attr_nonnull(1, 3);
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void text_render(const char *text, Font *font, Sprite *out_sprite, BBox *out_bbox)
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attr_nonnull(1, 2, 3, 4);
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void text_shorten(Font *font, char *text, double width)
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attr_nonnull(1, 2);
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void text_wrap(Font *font, const char *src, double width, char *buf, size_t bufsize)
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attr_nonnull(1, 2, 4);
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void text_bbox(Font *font, const char *text, uint maxlines, BBox *bbox)
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attr_nonnull(1, 2, 4);
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int text_width_raw(Font *font, const char *text, uint maxlines)
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attr_nonnull(1, 2);
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double text_width(Font *font, const char *text, uint maxlines)
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attr_nonnull(1, 2);
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int text_height_raw(Font *font, const char *text, uint maxlines)
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attr_nonnull(1, 2);
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double text_height(Font *font, const char *text, uint maxlines)
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attr_nonnull(1, 2);
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extern ResourceHandler font_res_handler;
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#define FONT_PATH_PREFIX "res/fonts/"
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#define FONT_EXTENSION ".font"
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