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https://github.com/gnif/LookingGlass.git
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[client] fonts: remove SDL font backend
This commit is contained in:
Quantum
Geoffrey McRae
parent
c96ee0f786
commit
9886c2bf40
@ -20,7 +20,6 @@ endfunction()
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# Add/remove fonts here!
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add_font(freetype)
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add_font(SDL)
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list(REMOVE_AT FONTS 0)
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list(REMOVE_AT FONTS_LINK 0)
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@ -1,26 +0,0 @@
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cmake_minimum_required(VERSION 3.0)
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project(font_SDL LANGUAGES C)
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find_package(PkgConfig)
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pkg_check_modules(FONT_SDL_PKGCONFIG REQUIRED
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SDL2_ttf
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fontconfig
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)
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add_library(font_SDL STATIC
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src/sdl.c
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)
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target_link_libraries(font_SDL
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${FONT_SDL_PKGCONFIG_LIBRARIES}
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lg_common
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)
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target_include_directories(font_SDL
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PUBLIC
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$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
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$<INSTALL_INTERFACE:include>
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PRIVATE
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src
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${FONT_SDL_PKGCONFIG_INCLUDE_DIRS}
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)
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@ -1,251 +0,0 @@
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/*
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Looking Glass - KVM FrameRelay (KVMFR) Client
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Copyright (C) 2017-2019 Geoffrey McRae <geoff@hostfission.com>
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https://looking-glass.hostfission.com
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdlib.h>
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#include <stdbool.h>
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#include "interface/font.h"
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#include "common/debug.h"
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#include <SDL2/SDL_ttf.h>
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#include <fontconfig/fontconfig.h>
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static int g_initCount = 0;
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static FcConfig * g_fontConfig = NULL;
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struct Inst
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{
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TTF_Font * font;
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};
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static bool lgf_sdl_create(LG_FontObj * opaque, const char * font_name, unsigned int size)
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{
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bool ret = false;
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if (g_initCount == 0)
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{
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if (TTF_Init() < 0)
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{
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DEBUG_ERROR("TTF_Init Failed");
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goto fail;
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}
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g_fontConfig = FcInitLoadConfigAndFonts();
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if (!g_fontConfig)
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{
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DEBUG_ERROR("FcInitLoadConfigAndFonts Failed");
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goto fail_init;
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}
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}
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*opaque = malloc(sizeof(struct Inst));
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if (!*opaque)
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{
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DEBUG_INFO("Failed to allocate %lu bytes", sizeof(struct Inst));
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goto fail_config;
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}
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memset(*opaque, 0, sizeof(struct Inst));
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struct Inst * this = (struct Inst *)*opaque;
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if (!font_name)
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font_name = "FreeMono";
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FcPattern * pat = FcNameParse((const FcChar8*)font_name);
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if (!pat)
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{
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DEBUG_ERROR("FCNameParse failed");
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goto fail_opaque;
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}
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FcConfigSubstitute(g_fontConfig, pat, FcMatchPattern);
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FcDefaultSubstitute(pat);
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FcResult result;
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FcChar8 * file = NULL;
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FcPattern * match = FcFontMatch(g_fontConfig, pat, &result);
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if (!match)
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{
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DEBUG_ERROR("FcFontMatch Failed");
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goto fail_parse;
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}
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if (FcPatternGetString(match, FC_FILE, 0, &file) == FcResultMatch)
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{
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this->font = TTF_OpenFont((char *)file, size);
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if (!this->font)
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{
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DEBUG_ERROR("TTL_OpenFont Failed");
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goto fail_match;
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}
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}
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else
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{
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DEBUG_ERROR("Failed to locate the requested font: %s", font_name);
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goto fail_match;
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}
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++g_initCount;
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ret = true;
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fail_match:
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FcPatternDestroy(match);
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fail_parse:
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FcPatternDestroy(pat);
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if (ret)
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return true;
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fail_opaque:
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free(this);
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*opaque = NULL;
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fail_config:
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if (g_initCount == 0)
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{
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FcConfigDestroy(g_fontConfig);
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g_fontConfig = NULL;
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}
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fail_init:
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if (g_initCount == 0)
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TTF_Quit();
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fail:
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return false;
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}
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static void lgf_sdl_destroy(LG_FontObj opaque)
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{
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struct Inst * this = (struct Inst *)opaque;
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if (this->font)
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TTF_CloseFont(this->font);
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free(this);
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if (--g_initCount == 0)
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{
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FcConfigDestroy(g_fontConfig);
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g_fontConfig = NULL;
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TTF_Quit();
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}
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}
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static int lgf_sdl_multiline_width(TTF_Font * font, const char * text)
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{
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int w, maxW = 0;
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const char * ptr = text;
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char * buf = NULL;
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size_t size = 0;
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while (*ptr)
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{
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const char * newLine = strchr(ptr, '\n');
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size_t line = newLine ? newLine - ptr : strlen(ptr);
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if (line > size)
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{
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size = line * 2 + 1;
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void * new = realloc(buf, size);
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if (!new)
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{
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DEBUG_ERROR("Failed to allocate memory");
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free(buf);
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return -1;
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}
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buf = new;
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}
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memcpy(buf, ptr, line);
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buf[line] = '\0';
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if (TTF_SizeUTF8(font, buf, &w, NULL) < 0)
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{
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free(buf);
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DEBUG_ERROR("Failed to measure text: %s", TTF_GetError());
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return -1;
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}
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if (w > maxW)
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maxW = w;
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ptr += line + 1;
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}
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free(buf);
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return maxW;
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}
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static LG_FontBitmap * lgf_sdl_render(LG_FontObj opaque, unsigned int fg_color, const char * text)
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{
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struct Inst * this = (struct Inst *)opaque;
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SDL_Surface * surface;
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SDL_Color color;
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color.r = (fg_color & 0xff000000) >> 24;
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color.g = (fg_color & 0x00ff0000) >> 16;
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color.b = (fg_color & 0x0000ff00) >> 8;
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color.a = (fg_color & 0x000000ff) >> 0;
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if (strchr(text, '\n'))
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{
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int width = lgf_sdl_multiline_width(this->font, text);
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if (width < 1)
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return NULL;
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surface = TTF_RenderUTF8_Blended_Wrapped(this->font, text, color, width);
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}
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else
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surface = TTF_RenderUTF8_Blended(this->font, text, color);
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if (!surface)
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{
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DEBUG_ERROR("Failed to render text: %s", TTF_GetError());
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return NULL;
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}
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LG_FontBitmap * out = malloc(sizeof(LG_FontBitmap));
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if (!out)
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{
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SDL_FreeSurface(surface);
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DEBUG_ERROR("Failed to allocate memory for font bitmap");
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return NULL;
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}
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out->reserved = surface;
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out->width = surface->w;
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out->height = surface->h;
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out->bpp = surface->format->BytesPerPixel;
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out->pixels = surface->pixels;
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return out;
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}
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static void lgf_sdl_release(LG_FontObj opaque, LG_FontBitmap * font)
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{
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LG_FontBitmap * bitmap = (LG_FontBitmap *)font;
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SDL_FreeSurface(bitmap->reserved);
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free(bitmap);
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}
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struct LG_Font LGF_SDL =
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{
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.name = "SDL",
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.create = lgf_sdl_create,
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.destroy = lgf_sdl_destroy,
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.render = lgf_sdl_render,
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.release = lgf_sdl_release
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};
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