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LibGfx: TrueTypeFont cleanup

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No functional changes.
This commit is contained in:
Jelle Raaijmakers 2022-03-24 16:22:18 +01:00 • committed by Andreas Kling
parent b17fb76ace
commit c0513999d6
2 changed files with 8 additions and 10 deletions
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15
Userland/Libraries/LibGfx/TrueTypeFont/Cmap.cpp
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@ -121,13 +121,13 @@ u32 Cmap::Subtable::glyph_id_for_code_point_table_12(u32 code_point) const
VERIFY(m_slice.size() >= (u32)Table12Sizes::Header + (u32)Table12Sizes::Record * num_groups);
for (u32 offset = 0; offset < num_groups * (u32)Table12Sizes::Record; offset += (u32)Table12Sizes::Record) {
u32 start_code_point = be_u32(m_slice.offset_pointer((u32)Table12Offsets::Record_StartCode + offset));
if (code_point < start_code_point) {
if (code_point < start_code_point)
break;
}
u32 end_code_point = be_u32(m_slice.offset_pointer((u32)Table12Offsets::Record_EndCode + offset));
if (code_point > end_code_point) {
if (code_point > end_code_point)
continue;
}
u32 glyph_offset = be_u32(m_slice.offset_pointer((u32)Table12Offsets::Record_StartGlyph + offset));
return code_point - start_code_point + glyph_offset;
}
@ -137,18 +137,17 @@ u32 Cmap::Subtable::glyph_id_for_code_point_table_12(u32 code_point) const
u32 Cmap::glyph_id_for_code_point(u32 code_point) const
{
auto opt_subtable = subtable(m_active_index);
if (!opt_subtable.has_value()) {
if (!opt_subtable.has_value())
return 0;
}
auto subtable = opt_subtable.value();
return subtable.glyph_id_for_code_point(code_point);
}
Optional<Cmap> Cmap::from_slice(ReadonlyBytes slice)
{
if (slice.size() < (size_t)Sizes::TableHeader) {
if (slice.size() < (size_t)Sizes::TableHeader)
return {};
}
return Cmap(slice);
}

3
Userland/Libraries/LibGfx/TrueTypeFont/Font.cpp
View file

@ -10,7 +10,6 @@
#include <AK/Try.h>
#include <AK/Utf32View.h>
#include <AK/Utf8View.h>
#include <LibCore/File.h>
#include <LibCore/MappedFile.h>
#include <LibGfx/TrueTypeFont/Cmap.h>
#include <LibGfx/TrueTypeFont/Font.h>
@ -429,7 +428,7 @@ ErrorOr<NonnullRefPtr<Font>> Font::try_load_from_offset(ReadonlyBytes buffer, u3
u32 table_length = be_u32(buffer.offset_pointer(record_offset + (u32)Offsets::TableRecord_Length));
if (Checked<u32>::addition_would_overflow(table_offset, table_length))
return Error::from_string_literal("Invalid table offset/length in font."sv);
return Error::from_string_literal("Invalid table offset or length in font"sv);
if (buffer.size() < table_offset + table_length)
return Error::from_string_literal("Font file too small"sv);