mirror of
https://github.com/gnif/LookingGlass.git
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141 lines
3.4 KiB
C
141 lines
3.4 KiB
C
/**
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* Looking Glass
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* Copyright © 2017-2026 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "font_platform.h"
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#include "font_platform_stub.h"
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#include <stdlib.h>
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#include <string.h>
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struct FontPlatform
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{
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unsigned int unused;
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};
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static FontPlatformStubStats stats;
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const FontPlatformStubStats * font_platformStubStats(void)
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{
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return &stats;
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}
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bool font_platformInit(FontPlatform ** platform)
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{
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if (!platform)
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return false;
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*platform = calloc(1, sizeof(**platform));
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if (!*platform)
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return false;
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++stats.initCount;
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return true;
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}
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void font_platformFree(FontPlatform * platform)
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{
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if (!platform)
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return;
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++stats.freeCount;
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free(platform);
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}
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char * font_platformSelect(FontPlatform * platform, const char * fontName)
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{
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if (!platform || !fontName)
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return NULL;
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++stats.selectCount;
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const size_t length = strlen(FONT_TEST_FILE) + 1;
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char * path = malloc(length);
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if (path)
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memcpy(path, FONT_TEST_FILE, length);
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return path;
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}
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bool font_platformResolve(FontPlatform * platform,
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const uint32_t * glyphs, size_t glyphCount,
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FontPlatformAddFaceFn addFace, void * opaque, size_t * unresolved)
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{
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if (!platform || (!glyphs && glyphCount) || !addFace || !unresolved ||
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glyphCount > SIZE_MAX / sizeof(*glyphs))
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return false;
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++stats.resolveCount;
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uint32_t * primary = malloc(glyphCount * sizeof(*primary));
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uint32_t * fallback = malloc(glyphCount * sizeof(*fallback));
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if ((!primary || !fallback) && glyphCount)
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{
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free(primary);
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free(fallback);
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return false;
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}
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size_t primaryCount = 0;
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size_t fallbackCount = 0;
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for (size_t i = 0; i < glyphCount; ++i)
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if (glyphs[i] <= 0xff)
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primary[primaryCount++] = glyphs[i];
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else
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fallback[fallbackCount++] = glyphs[i];
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FontPlatformFaceResult result = FONT_PLATFORM_FACE_ACCEPT;
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if (primaryCount)
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result = addFace(
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opaque, FONT_TEST_FILE, 0, primary, primaryCount);
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if (result == FONT_PLATFORM_FACE_ERROR)
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goto fail;
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size_t missing = result == FONT_PLATFORM_FACE_ACCEPT ? 0 : primaryCount;
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if (fallbackCount)
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{
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result = addFace(opaque, FONT_TEST_FILE, 1,
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fallback, fallbackCount);
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if (result == FONT_PLATFORM_FACE_ERROR)
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goto fail;
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if (result == FONT_PLATFORM_FACE_SKIP)
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++stats.incompatibleSkipCount;
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else
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goto fail;
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result = addFace(opaque, FONT_TEST_FILE, 0,
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fallback, fallbackCount);
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if (result == FONT_PLATFORM_FACE_ERROR)
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goto fail;
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if (result == FONT_PLATFORM_FACE_ACCEPT)
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{
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++stats.fallbackAcceptCount;
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}
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else
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missing += fallbackCount;
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}
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*unresolved = missing;
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free(primary);
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free(fallback);
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return true;
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fail:
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free(primary);
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free(fallback);
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return false;
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}
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