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LibGfx: Store BitmapFont rows data as Bytes

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Sam Atkins 2023-10-06 16:41:40 +01:00 committed by Tim Schumacher
parent 415a024bc8
commit a3b91378df
2 changed files with 16 additions and 17 deletions
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27
Userland/Libraries/LibGfx/Font/BitmapFont.cpp
View file

@ -51,10 +51,10 @@ ErrorOr<NonnullRefPtr<Font>> BitmapFont::try_clone() const
m_range_mask.copy_to(new_range_mask);
size_t bytes_per_glyph = sizeof(u32) * glyph_height();
auto new_rows = TRY(Core::System::allocate(m_glyph_count, bytes_per_glyph));
memcpy(new_rows.data(), m_rows, bytes_per_glyph * m_glyph_count);
m_rows.copy_to(new_rows);
auto new_widths = TRY(Core::System::allocate(m_glyph_count, 1));
memcpy(new_widths.data(), m_glyph_widths, m_glyph_count);
return TRY(adopt_nonnull_ref_or_enomem(new (nothrow) BitmapFont(m_name, m_family, new_rows.data(), new_widths.data(), m_fixed_width, m_glyph_width, m_glyph_height, m_glyph_spacing, new_range_mask, m_baseline, m_mean_line, m_presentation_size, m_weight, m_slope, true)));
return TRY(adopt_nonnull_ref_or_enomem(new (nothrow) BitmapFont(m_name, m_family, new_rows, new_widths.data(), m_fixed_width, m_glyph_width, m_glyph_height, m_glyph_spacing, new_range_mask, m_baseline, m_mean_line, m_presentation_size, m_weight, m_slope, true)));
}
ErrorOr<NonnullRefPtr<BitmapFont>> BitmapFont::create(u8 glyph_height, u8 glyph_width, bool fixed, size_t glyph_count)
@ -70,7 +70,7 @@ ErrorOr<NonnullRefPtr<BitmapFont>> BitmapFont::create(u8 glyph_height, u8 glyph_
size_t bytes_per_glyph = sizeof(u32) * glyph_height;
auto new_rows = TRY(Core::System::allocate(glyph_count, bytes_per_glyph));
auto new_widths = TRY(Core::System::allocate(glyph_count, 1));
return adopt_nonnull_ref_or_enomem(new (nothrow) BitmapFont("Untitled"_string, "Untitled"_string, new_rows.data(), new_widths.data(), fixed, glyph_width, glyph_height, 1, new_range_mask, 0, 0, 0, 400, 0, true));
return adopt_nonnull_ref_or_enomem(new (nothrow) BitmapFont("Untitled"_string, "Untitled"_string, new_rows, new_widths.data(), fixed, glyph_width, glyph_height, 1, new_range_mask, 0, 0, 0, 400, 0, true));
}
ErrorOr<NonnullRefPtr<BitmapFont>> BitmapFont::unmasked_character_set() const
@ -88,7 +88,7 @@ ErrorOr<NonnullRefPtr<BitmapFont>> BitmapFont::unmasked_character_set() const
memcpy(&new_rows[code_point * bytes_per_glyph], &m_rows[index.value() * bytes_per_glyph], bytes_per_glyph);
}
}
return adopt_nonnull_ref_or_enomem(new (nothrow) BitmapFont(m_name, m_family, new_rows.data(), new_widths.data(), m_fixed_width, m_glyph_width, m_glyph_height, m_glyph_spacing, new_range_mask, m_baseline, m_mean_line, m_presentation_size, m_weight, m_slope, true));
return adopt_nonnull_ref_or_enomem(new (nothrow) BitmapFont(m_name, m_family, new_rows, new_widths.data(), m_fixed_width, m_glyph_width, m_glyph_height, m_glyph_spacing, new_range_mask, m_baseline, m_mean_line, m_presentation_size, m_weight, m_slope, true));
}
ErrorOr<NonnullRefPtr<BitmapFont>> BitmapFont::masked_character_set() const
@ -120,10 +120,10 @@ ErrorOr<NonnullRefPtr<BitmapFont>> BitmapFont::masked_character_set() const
}
// Now that we're done working with the range-mask memory, reduce its reported size down to what it should be.
new_range_mask = { new_range_mask.data(), new_range_mask_size };
return adopt_nonnull_ref_or_enomem(new (nothrow) BitmapFont(m_name, m_family, new_rows.data(), new_widths.data(), m_fixed_width, m_glyph_width, m_glyph_height, m_glyph_spacing, new_range_mask, m_baseline, m_mean_line, m_presentation_size, m_weight, m_slope, true));
return adopt_nonnull_ref_or_enomem(new (nothrow) BitmapFont(m_name, m_family, new_rows, new_widths.data(), m_fixed_width, m_glyph_width, m_glyph_height, m_glyph_spacing, new_range_mask, m_baseline, m_mean_line, m_presentation_size, m_weight, m_slope, true));
}
BitmapFont::BitmapFont(String name, String family, u8* rows, u8* widths, bool is_fixed_width, u8 glyph_width, u8 glyph_height, u8 glyph_spacing, Bytes range_mask, u8 baseline, u8 mean_line, u8 presentation_size, u16 weight, u8 slope, bool owns_arrays)
BitmapFont::BitmapFont(String name, String family, Bytes rows, u8* widths, bool is_fixed_width, u8 glyph_width, u8 glyph_height, u8 glyph_spacing, Bytes range_mask, u8 baseline, u8 mean_line, u8 presentation_size, u16 weight, u8 slope, bool owns_arrays)
: m_name(move(name))
, m_family(move(family))
, m_range_mask(range_mask)
@ -142,7 +142,6 @@ BitmapFont::BitmapFont(String name, String family, u8* rows, u8* widths, bool is
, m_fixed_width(is_fixed_width)
, m_owns_arrays(owns_arrays)
{
VERIFY(m_rows);
VERIFY(m_glyph_widths);
update_x_height();
@ -174,7 +173,7 @@ BitmapFont::~BitmapFont()
{
if (m_owns_arrays) {
free(m_glyph_widths);
free(m_rows);
free(m_rows.data());
free(m_range_mask.data());
}
}
@ -195,8 +194,9 @@ ErrorOr<NonnullRefPtr<BitmapFont>> BitmapFont::load_from_memory(u8 const* data)
Bytes range_mask { range_mask_start, header.range_mask_size };
for (size_t i = 0; i < header.range_mask_size; ++i)
glyph_count += 256 * popcount(range_mask[i]);
u8* rows = range_mask_start + header.range_mask_size;
u8* widths = (u8*)(rows) + glyph_count * bytes_per_glyph;
u8* rows_start = range_mask_start + header.range_mask_size;
Bytes rows { rows_start, glyph_count * bytes_per_glyph };
u8* widths = rows_start + glyph_count * bytes_per_glyph;
auto name = TRY(String::from_utf8(ReadonlyBytes { header.name, strlen(header.name) }));
auto family = TRY(String::from_utf8(ReadonlyBytes { header.family, strlen(header.family) }));
return adopt_nonnull_ref_or_enomem(new (nothrow) BitmapFont(move(name), move(family), rows, widths, !header.is_variable_width, header.glyph_width, header.glyph_height, header.glyph_spacing, range_mask, header.baseline, header.mean_line, header.presentation_size, header.weight, header.slope));
@ -246,10 +246,9 @@ ErrorOr<void> BitmapFont::write_to_file(NonnullOwnPtr<Core::File> file)
memcpy(header.name, m_name.bytes().data(), min(m_name.bytes().size(), sizeof(header.name) - 1));
memcpy(header.family, m_family.bytes().data(), min(m_family.bytes().size(), sizeof(header.family) - 1));
size_t bytes_per_glyph = sizeof(u32) * m_glyph_height;
TRY(file->write_until_depleted({ &header, sizeof(header) }));
TRY(file->write_until_depleted(m_range_mask));
TRY(file->write_until_depleted({ m_rows, m_glyph_count * bytes_per_glyph }));
TRY(file->write_until_depleted(m_rows));
TRY(file->write_until_depleted({ m_glyph_widths, m_glyph_count }));
return {};
@ -262,7 +261,7 @@ Glyph BitmapFont::glyph(u32 code_point) const
auto index = glyph_index(code_point).value_or('?');
auto width = m_glyph_widths[index];
return Glyph(
GlyphBitmap(m_rows, index * m_glyph_height, { width, m_glyph_height }),
GlyphBitmap(m_rows.data(), index * m_glyph_height, { width, m_glyph_height }),
0,
width,
m_glyph_height);
@ -272,7 +271,7 @@ Glyph BitmapFont::raw_glyph(u32 code_point) const
{
auto width = m_glyph_widths[code_point];
return Glyph(
GlyphBitmap(m_rows, code_point * m_glyph_height, { width, m_glyph_height }),
GlyphBitmap(m_rows.data(), code_point * m_glyph_height, { width, m_glyph_height }),
0,
width,
m_glyph_height);

6
Userland/Libraries/LibGfx/Font/BitmapFont.h
View file

@ -38,7 +38,7 @@ public:
~BitmapFont();
u8* rows() { return m_rows; }
u8* rows() { return m_rows.data(); }
u8* widths() { return m_glyph_widths; }
virtual float point_size() const override { return m_presentation_size; }
@ -131,7 +131,7 @@ public:
virtual RefPtr<Font> with_size(float point_size) const override;
private:
BitmapFont(String name, String family, u8* rows, u8* widths, bool is_fixed_width,
BitmapFont(String name, String family, Bytes rows, u8* widths, bool is_fixed_width,
u8 glyph_width, u8 glyph_height, u8 glyph_spacing, Bytes range_mask,
u8 baseline, u8 mean_line, u8 presentation_size, u16 weight, u8 slope, bool owns_arrays = false);
@ -151,7 +151,7 @@ private:
Bytes m_range_mask;
Vector<Optional<size_t>> m_range_indices;
u8* m_rows { nullptr };
Bytes m_rows;
u8* m_glyph_widths { nullptr };
OwnPtr<Core::MappedFile> m_mapped_file;