Mercurial > molko
view libmlk-core/mlk/core/font.c @ 545:27303e9402de
core: introduce mlk_alloc_expand
author | David Demelier <markand@malikania.fr> |
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date | Sun, 05 Mar 2023 22:14:02 +0100 |
parents | 338a4436e255 |
children | c7664b679a95 |
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/* * font.c -- basic font management * * Copyright (c) 2020-2023 David Demelier <markand@malikania.fr> * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <assert.h> #include <string.h> #include <SDL_ttf.h> #include "color.h" #include "err.h" #include "font.h" #include "texture_p.h" #include "util.h" int mlk_font_open(struct mlk_font *font, const char *path, unsigned int size) { assert(font); assert(path); if (!(font->handle = TTF_OpenFont(path, size))) return MLK_ERR_SDL; return 0; } int mlk_font_openmem(struct mlk_font *font, const void *buffer, size_t buflen, unsigned int size) { assert(font); assert(buffer); SDL_RWops *ops; if (!(ops = SDL_RWFromConstMem(buffer, buflen)) || (!(font->handle = TTF_OpenFontRW(ops, 1, size)))) return MLK_ERR_SDL; return 0; } int mlk_font_ok(const struct mlk_font *font) { return font && font->handle; } int mlk_font_render(struct mlk_font *font, struct mlk_texture *tex, const char *text, unsigned long color) { assert(mlk_font_ok(font)); assert(text); SDL_Color fg = { .r = MLK_COLOR_R(color), .g = MLK_COLOR_G(color), .b = MLK_COLOR_B(color), .a = MLK_COLOR_A(color) }; SDL_Surface *surface; SDL_Surface *(*func)(TTF_Font *, const char *, SDL_Color); switch (font->style) { case MLK_FONT_STYLE_ANTIALIASED: func = TTF_RenderUTF8_Blended; break; default: func = TTF_RenderUTF8_Solid; break; } if (!(surface = func(font->handle, text, fg))) return MLK_ERR_SDL; return mlk__texture_from_surface(tex, surface); } unsigned int mlk_font_height(const struct mlk_font *font) { assert(mlk_font_ok(font)); return TTF_FontHeight(font->handle); } int mlk_font_query(const struct mlk_font *font, const char *text, unsigned int *w, unsigned int *h) { assert(mlk_font_ok(font)); assert(text); if (w) *w = 0; if (h) *h = 0; if (TTF_SizeUTF8(font->handle, text, (int *)w, (int *)h) != 0) return MLK_ERR_SDL; return 0; } void mlk_font_finish(struct mlk_font *font) { assert(font); if (font->handle) { TTF_CloseFont(font->handle); font->handle = NULL; } }