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LibGfx: Insert pixel and ttf fonts into Typeface structure

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This adds a new structure 'Typeface' to the FontDatabase that
represents all fonts of the same family and variant.
It can contain a list of BitmapFonts with varying size but of
the same family and weight or a pointer to a single TTF font
for all sizes of this Typeface.
This commit is contained in:
Stephan Unverwerth 2021-01-02 14:49:20 +01:00 • committed by Andreas Kling
parent 2c4e13f14a
commit 179dba652e
13 changed files with 248 additions and 32 deletions
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42
Userland/Libraries/LibGfx/Font.h
View file

@ -31,15 +31,21 @@
#include <AK/RefPtr.h>
#include <AK/String.h>
#include <AK/Types.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/Size.h>
namespace Gfx {
// FIXME: Make a MutableGlyphBitmap buddy class for FontEditor instead?
class GlyphBitmap {
friend class BitmapFont;
public:
GlyphBitmap() = default;
GlyphBitmap(const unsigned* rows, IntSize size)
: m_rows(rows)
, m_size(size)
{
}
const unsigned* rows() const { return m_rows; }
unsigned row(unsigned index) const { return m_rows[index]; }
@ -58,14 +64,29 @@ public:
int height() const { return m_size.height(); }
private:
GlyphBitmap(const unsigned* rows, IntSize size)
: m_rows(rows)
, m_size(size)
const unsigned* m_rows { nullptr };
IntSize m_size { 0, 0 };
};
class Glyph {
public:
Glyph(const GlyphBitmap& glyph_bitmap)
: m_glyph_bitmap(glyph_bitmap)
{
}
const unsigned* m_rows { nullptr };
IntSize m_size;
Glyph(RefPtr<Bitmap> bitmap)
: m_bitmap(bitmap)
{
}
bool is_glyph_bitmap() const { return !m_bitmap; }
GlyphBitmap glyph_bitmap() const { return m_glyph_bitmap; }
RefPtr<Bitmap> bitmap() const { return m_bitmap; }
private:
GlyphBitmap m_glyph_bitmap;
RefPtr<Bitmap> m_bitmap;
};
class Font : public RefCounted<Font> {
@ -78,7 +99,7 @@ public:
virtual u8 presentation_size() const = 0;
virtual u16 weight() const = 0;
virtual GlyphBitmap glyph_bitmap(u32 code_point) const = 0;
virtual Glyph glyph(u32 code_point) const = 0;
virtual u8 glyph_width(size_t ch) const = 0;
virtual int glyph_or_emoji_width(u32 code_point) const = 0;
@ -96,7 +117,7 @@ public:
virtual int width(const Utf8View&) const = 0;
virtual int width(const Utf32View&) const = 0;
virtual const String& name() const = 0;
virtual String name() const = 0;
virtual bool is_fixed_width() const = 0;
@ -104,7 +125,8 @@ public:
virtual int glyph_count() const = 0;
virtual const String& family() const = 0;
virtual String family() const = 0;
virtual String variant() const = 0;
virtual String qualified_name() const = 0;