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LibDraw: Store glyph spacing information in the fonts headers

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This commit is contained in:
Tibor Nagy 2019-12-30 11:36:55 +01:00 • committed by Andreas Kling
parent edba444aa9
commit edc3580756
Notes: sideshowbarker 2024-07-19 10:32:28 +09:00
2 changed files with 12 additions and 6 deletions
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11
Libraries/LibDraw/Font.cpp
View file

@ -19,7 +19,8 @@ struct [[gnu::packed]] FontFileHeader
u8 glyph_height;
u8 type;
u8 is_variable_width;
u8 unused[6];
u8 glyph_spacing;
u8 unused[5];
char name[64];
};
@ -78,10 +79,10 @@ RefPtr<Font> Font::clone() const
memcpy(new_widths, m_glyph_widths, 256);
else
memset(new_widths, m_glyph_width, 256);
return adopt(*new Font(m_name, new_rows, new_widths, m_fixed_width, m_glyph_width, m_glyph_height));
return adopt(*new Font(m_name, new_rows, new_widths, m_fixed_width, m_glyph_width, m_glyph_height, m_glyph_spacing));
}
Font::Font(const StringView& name, unsigned* rows, u8* widths, bool is_fixed_width, u8 glyph_width, u8 glyph_height)
Font::Font(const StringView& name, unsigned* rows, u8* widths, bool is_fixed_width, u8 glyph_width, u8 glyph_height, u8 glyph_spacing)
: m_name(name)
, m_rows(rows)
, m_glyph_widths(widths)
@ -89,6 +90,7 @@ Font::Font(const StringView& name, unsigned* rows, u8* widths, bool is_fixed_wid
, m_glyph_height(glyph_height)
, m_min_glyph_width(glyph_width)
, m_max_glyph_width(glyph_width)
, m_glyph_spacing(glyph_spacing)
, m_fixed_width(is_fixed_width)
{
if (!m_fixed_width) {
@ -125,7 +127,7 @@ RefPtr<Font> Font::load_from_memory(const u8* data)
u8* widths = nullptr;
if (header.is_variable_width)
widths = (u8*)(rows) + 256 * bytes_per_glyph;
return adopt(*new Font(String(header.name), rows, widths, !header.is_variable_width, header.glyph_width, header.glyph_height));
return adopt(*new Font(String(header.name), rows, widths, !header.is_variable_width, header.glyph_width, header.glyph_height, header.glyph_spacing));
}
RefPtr<Font> Font::load_from_file(const StringView& path)
@ -154,6 +156,7 @@ bool Font::write_to_file(const StringView& path)
header.glyph_height = m_glyph_height;
header.type = 0;
header.is_variable_width = !m_fixed_width;
header.glyph_spacing = m_glyph_spacing;
memcpy(header.name, m_name.characters(), min(m_name.length(), (size_t)63));
size_t bytes_per_glyph = sizeof(unsigned) * m_glyph_height;

7
Libraries/LibDraw/Font.h
View file

@ -63,7 +63,6 @@ public:
u8 glyph_height() const { return m_glyph_height; }
u8 min_glyph_width() const { return m_min_glyph_width; }
u8 max_glyph_width() const { return m_max_glyph_width; }
u8 glyph_spacing() const { return m_fixed_width ? 0 : 1; }
int width(const StringView&) const;
int width(const Utf8View&) const;
@ -73,6 +72,9 @@ public:
bool is_fixed_width() const { return m_fixed_width; }
void set_fixed_width(bool b) { m_fixed_width = b; }
u8 glyph_spacing() const { return m_glyph_spacing; }
void set_glyph_spacing(u8 spacing) { m_glyph_spacing = spacing; }
void set_glyph_width(char ch, u8 width)
{
ASSERT(m_glyph_widths);
@ -80,7 +82,7 @@ public:
}
private:
Font(const StringView& name, unsigned* rows, u8* widths, bool is_fixed_width, u8 glyph_width, u8 glyph_height);
Font(const StringView& name, unsigned* rows, u8* widths, bool is_fixed_width, u8 glyph_width, u8 glyph_height, u8 glyph_spacing);
static RefPtr<Font> load_from_memory(const u8*);
@ -94,6 +96,7 @@ private:
u8 m_glyph_height { 0 };
u8 m_min_glyph_width { 0 };
u8 m_max_glyph_width { 0 };
u8 m_glyph_spacing { 0 };
bool m_fixed_width { false };
};