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[TextServer] Add invalid font scaling check, restrict Linux/BSD system fonts lookup to TrueType/CFF only.

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This commit is contained in:
bruvzg 2023-03-10 09:10:12 +02:00
parent c1128e911c
commit 8d501a2dc3
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GPG Key ID: 7960FCF39844EC38
3 changed files with 77 additions and 64 deletions
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4
modules/text_server_adv/text_server_adv.cpp
View File

@ -1391,7 +1391,9 @@ _FORCE_INLINE_ bool TextServerAdvanced::_ensure_cache_for_size(FontAdvanced *p_f
FT_Select_Size(fd->face, best_match);
} else {
FT_Set_Pixel_Sizes(fd->face, 0, double(fd->size.x * fd->oversampling));
fd->scale = ((double)fd->size.x * fd->oversampling) / (double)fd->face->size->metrics.y_ppem;
if (fd->face->size->metrics.y_ppem != 0) {
fd->scale = ((double)fd->size.x * fd->oversampling) / (double)fd->face->size->metrics.y_ppem;
}
}
fd->hb_handle = hb_ft_font_create(fd->face, nullptr);

4
modules/text_server_fb/text_server_fb.cpp
View File

@ -830,7 +830,9 @@ _FORCE_INLINE_ bool TextServerFallback::_ensure_cache_for_size(FontFallback *p_f
FT_Select_Size(fd->face, best_match);
} else {
FT_Set_Pixel_Sizes(fd->face, 0, Math::round(fd->size.x * fd->oversampling));
fd->scale = ((double)fd->size.x * fd->oversampling) / (double)fd->face->size->metrics.y_ppem;
if (fd->face->size->metrics.y_ppem != 0) {
fd->scale = ((double)fd->size.x * fd->oversampling) / (double)fd->face->size->metrics.y_ppem;
}
}
fd->ascent = (fd->face->size->metrics.ascender / 64.0) / fd->oversampling * fd->scale;

133
platform/linuxbsd/os_linuxbsd.cpp
View File

@ -677,40 +677,45 @@ Vector<String> OS_LinuxBSD::get_system_font_path_for_text(const String &p_font_n
}
Vector<String> ret;
FcPattern *pattern = FcPatternCreate();
if (pattern) {
FcPatternAddString(pattern, FC_FAMILY, reinterpret_cast<const FcChar8 *>(p_font_name.utf8().get_data()));
FcPatternAddInteger(pattern, FC_WEIGHT, _weight_to_fc(p_weight));
FcPatternAddInteger(pattern, FC_WIDTH, _stretch_to_fc(p_stretch));
FcPatternAddInteger(pattern, FC_SLANT, p_italic ? FC_SLANT_ITALIC : FC_SLANT_ROMAN);
static const char *allowed_formats[] = { "TrueType", "CFF" };
for (size_t i = 0; i < sizeof(allowed_formats) / sizeof(const char *); i++) {
FcPattern *pattern = FcPatternCreate();
if (pattern) {
FcPatternAddBool(pattern, FC_SCALABLE, FcTrue);
FcPatternAddString(pattern, FC_FONTFORMAT, reinterpret_cast<const FcChar8 *>(allowed_formats[i]));
FcPatternAddString(pattern, FC_FAMILY, reinterpret_cast<const FcChar8 *>(p_font_name.utf8().get_data()));
FcPatternAddInteger(pattern, FC_WEIGHT, _weight_to_fc(p_weight));
FcPatternAddInteger(pattern, FC_WIDTH, _stretch_to_fc(p_stretch));
FcPatternAddInteger(pattern, FC_SLANT, p_italic ? FC_SLANT_ITALIC : FC_SLANT_ROMAN);
FcCharSet *char_set = FcCharSetCreate();
for (int i = 0; i < p_text.size(); i++) {
FcCharSetAddChar(char_set, p_text[i]);
}
FcPatternAddCharSet(pattern, FC_CHARSET, char_set);
FcLangSet *lang_set = FcLangSetCreate();
FcLangSetAdd(lang_set, reinterpret_cast<const FcChar8 *>(p_locale.utf8().get_data()));
FcPatternAddLangSet(pattern, FC_LANG, lang_set);
FcConfigSubstitute(0, pattern, FcMatchPattern);
FcDefaultSubstitute(pattern);
FcResult result;
FcPattern *match = FcFontMatch(0, pattern, &result);
if (match) {
char *file_name = nullptr;
if (FcPatternGetString(match, FC_FILE, 0, reinterpret_cast<FcChar8 **>(&file_name)) == FcResultMatch) {
if (file_name) {
ret.push_back(String::utf8(file_name));
}
FcCharSet *char_set = FcCharSetCreate();
for (int j = 0; j < p_text.size(); j++) {
FcCharSetAddChar(char_set, p_text[j]);
}
FcPatternDestroy(match);
FcPatternAddCharSet(pattern, FC_CHARSET, char_set);
FcLangSet *lang_set = FcLangSetCreate();
FcLangSetAdd(lang_set, reinterpret_cast<const FcChar8 *>(p_locale.utf8().get_data()));
FcPatternAddLangSet(pattern, FC_LANG, lang_set);
FcConfigSubstitute(0, pattern, FcMatchPattern);
FcDefaultSubstitute(pattern);
FcResult result;
FcPattern *match = FcFontMatch(0, pattern, &result);
if (match) {
char *file_name = nullptr;
if (FcPatternGetString(match, FC_FILE, 0, reinterpret_cast<FcChar8 **>(&file_name)) == FcResultMatch) {
if (file_name) {
ret.push_back(String::utf8(file_name));
}
}
FcPatternDestroy(match);
}
FcPatternDestroy(pattern);
FcCharSetDestroy(char_set);
FcLangSetDestroy(lang_set);
}
FcPatternDestroy(pattern);
FcCharSetDestroy(char_set);
FcLangSetDestroy(lang_set);
}
return ret;
@ -725,47 +730,51 @@ String OS_LinuxBSD::get_system_font_path(const String &p_font_name, int p_weight
ERR_FAIL_V_MSG(String(), "Unable to load fontconfig, system font support is disabled.");
}
String ret;
FcPattern *pattern = FcPatternCreate();
if (pattern) {
bool allow_substitutes = (p_font_name.to_lower() == "sans-serif") || (p_font_name.to_lower() == "serif") || (p_font_name.to_lower() == "monospace") || (p_font_name.to_lower() == "cursive") || (p_font_name.to_lower() == "fantasy");
static const char *allowed_formats[] = { "TrueType", "CFF" };
for (size_t i = 0; i < sizeof(allowed_formats) / sizeof(const char *); i++) {
FcPattern *pattern = FcPatternCreate();
if (pattern) {
bool allow_substitutes = (p_font_name.to_lower() == "sans-serif") || (p_font_name.to_lower() == "serif") || (p_font_name.to_lower() == "monospace") || (p_font_name.to_lower() == "cursive") || (p_font_name.to_lower() == "fantasy");
FcPatternAddBool(pattern, FC_SCALABLE, FcTrue);
FcPatternAddString(pattern, FC_FAMILY, reinterpret_cast<const FcChar8 *>(p_font_name.utf8().get_data()));
FcPatternAddInteger(pattern, FC_WEIGHT, _weight_to_fc(p_weight));
FcPatternAddInteger(pattern, FC_WIDTH, _stretch_to_fc(p_stretch));
FcPatternAddInteger(pattern, FC_SLANT, p_italic ? FC_SLANT_ITALIC : FC_SLANT_ROMAN);
FcPatternAddBool(pattern, FC_SCALABLE, FcTrue);
FcPatternAddString(pattern, FC_FONTFORMAT, reinterpret_cast<const FcChar8 *>(allowed_formats[i]));
FcPatternAddString(pattern, FC_FAMILY, reinterpret_cast<const FcChar8 *>(p_font_name.utf8().get_data()));
FcPatternAddInteger(pattern, FC_WEIGHT, _weight_to_fc(p_weight));
FcPatternAddInteger(pattern, FC_WIDTH, _stretch_to_fc(p_stretch));
FcPatternAddInteger(pattern, FC_SLANT, p_italic ? FC_SLANT_ITALIC : FC_SLANT_ROMAN);
FcConfigSubstitute(0, pattern, FcMatchPattern);
FcDefaultSubstitute(pattern);
FcConfigSubstitute(0, pattern, FcMatchPattern);
FcDefaultSubstitute(pattern);
FcResult result;
FcPattern *match = FcFontMatch(0, pattern, &result);
if (match) {
if (!allow_substitutes) {
char *family_name = nullptr;
if (FcPatternGetString(match, FC_FAMILY, 0, reinterpret_cast<FcChar8 **>(&family_name)) == FcResultMatch) {
if (family_name && String::utf8(family_name).to_lower() != p_font_name.to_lower()) {
FcPatternDestroy(match);
FcPatternDestroy(pattern);
return String();
FcResult result;
FcPattern *match = FcFontMatch(0, pattern, &result);
if (match) {
if (!allow_substitutes) {
char *family_name = nullptr;
if (FcPatternGetString(match, FC_FAMILY, 0, reinterpret_cast<FcChar8 **>(&family_name)) == FcResultMatch) {
if (family_name && String::utf8(family_name).to_lower() != p_font_name.to_lower()) {
FcPatternDestroy(match);
FcPatternDestroy(pattern);
continue;
}
}
}
}
char *file_name = nullptr;
if (FcPatternGetString(match, FC_FILE, 0, reinterpret_cast<FcChar8 **>(&file_name)) == FcResultMatch) {
if (file_name) {
ret = String::utf8(file_name);
char *file_name = nullptr;
if (FcPatternGetString(match, FC_FILE, 0, reinterpret_cast<FcChar8 **>(&file_name)) == FcResultMatch) {
if (file_name) {
String ret = String::utf8(file_name);
FcPatternDestroy(match);
FcPatternDestroy(pattern);
return ret;
}
}
FcPatternDestroy(match);
}
FcPatternDestroy(match);
FcPatternDestroy(pattern);
}
FcPatternDestroy(pattern);
}
return ret;
return String();
#else
ERR_FAIL_V_MSG(String(), "Godot was compiled without fontconfig, system font support is disabled.");
#endif