Mercurial > molko
view libcore/core/font.c @ 162:629f55f3961e
core: rework states
author | David Demelier <markand@malikania.fr> |
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date | Sun, 18 Oct 2020 12:01:59 +0200 |
parents | e05a792f6910 |
children | eb0a7ab71023 |
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/* * font.c -- basic font management * * Copyright (c) 2020 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 "error.h" #include "error_p.h" #include "font.h" #include "texture_p.h" #include "util.h" bool font_open(struct font *font, const char *path, unsigned int size) { assert(font); assert(path); if (!(font->handle = TTF_OpenFont(path, size))) return error_sdl(); return true; } bool font_openmem(struct 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, true, size)))) return error_sdl(); return true; } void font_shallow(struct font *dst, const struct font *src) { assert(dst); assert(src); memcpy(dst, src, sizeof (*src)); } bool font_ok(const struct font *font) { assert(font); return font->handle; } bool font_render(struct font *font, struct texture *tex, const char *text) { assert(font_ok(font)); assert(text); SDL_Color fg = { .r = COLOR_R(font->color), .g = COLOR_G(font->color), .b = COLOR_B(font->color), .a = COLOR_A(font->color) }; SDL_Surface *surface; SDL_Surface *(*func)(TTF_Font *, const char *, SDL_Color); switch (font->style) { case FONT_STYLE_ANTIALIASED: func = TTF_RenderUTF8_Blended; break; default: func = TTF_RenderUTF8_Solid; break; } if (!(surface = func(font->handle, text, fg))) return error_sdl(); return texture_from_surface(tex, surface); } unsigned int font_height(const struct font *font) { assert(font_ok(font)); return TTF_FontHeight(font->handle); } bool font_query(const struct font *font, const char *text, unsigned int *w, unsigned int *h) { assert(font_ok(font)); assert(text); if (TTF_SizeUTF8(font->handle, text, (int *)w, (int *)h) != 0) return error_sdl(); return true; } void font_finish(struct font *font) { assert(font); if (font->handle) TTF_CloseFont(font->handle); memset(font, 0, sizeof (*font)); }