OpenTTD Source
20241108-master-g80f628063a
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Font cache for fonts that are based on a TrueType font. More...
#include <truetypefontcache.h>
Data Structures | |
struct | GlyphEntry |
Container for information about a glyph. More... | |
Public Member Functions | |
TrueTypeFontCache (FontSize fs, int pixels) | |
Create a new TrueTypeFontCache. More... | |
virtual | ~TrueTypeFontCache () |
Free everything that was allocated for this font cache. | |
int | GetFontSize () const override |
Get the nominal font size of the font. More... | |
void | SetUnicodeGlyph (char32_t key, SpriteID sprite) override |
Map a SpriteID to the key. More... | |
void | InitializeUnicodeGlyphMap () override |
Initialize the glyph map. | |
const Sprite * | GetGlyph (GlyphID key) override |
Get the glyph (sprite) of the given key. More... | |
void | ClearFontCache () override |
Reset cached glyphs. | |
uint | GetGlyphWidth (GlyphID key) override |
Get the width of the glyph with the given key. More... | |
bool | GetDrawGlyphShadow () override |
Do we need to draw a glyph shadow? More... | |
bool | IsBuiltInFont () override |
Is this a built-in sprite font? | |
Public Member Functions inherited from FontCache | |
FontCache (FontSize fs) | |
Create a new font cache. More... | |
virtual | ~FontCache () |
Clean everything up. | |
FontSize | GetSize () const |
Get the FontSize of the font. More... | |
int | GetHeight () const |
Get the height of the font. More... | |
int | GetAscender () const |
Get the ascender value of the font. More... | |
int | GetDescender () const |
Get the descender value of the font. More... | |
virtual GlyphID | MapCharToGlyph (char32_t key, bool fallback=true)=0 |
Map a character into a glyph. More... | |
virtual const void * | GetOSHandle () |
Get the native OS font handle, if there is one. More... | |
virtual std::string | GetFontName ()=0 |
Get the name of this font. More... | |
bool | HasParent () |
Check whether the font cache has a parent. | |
Protected Member Functions | |
GlyphEntry * | GetGlyphPtr (GlyphID key) |
GlyphEntry & | SetGlyphPtr (GlyphID key, GlyphEntry &&glyph) |
virtual const Sprite * | InternalGetGlyph (GlyphID key, bool aa)=0 |
Protected Attributes | |
int | req_size |
Requested font size. | |
int | used_size |
Used font size. | |
std::unordered_map< GlyphID, GlyphEntry > | glyph_to_sprite_map {} |
Protected Attributes inherited from FontCache | |
FontCache * | parent |
The parent of this font cache. | |
const FontSize | fs |
The size of the font. | |
int | height |
The height of the font. | |
int | ascender |
The ascender value of the font. | |
int | descender |
The descender value of the font. | |
Static Protected Attributes | |
static constexpr int | MAX_GLYPH_DIM = 256 |
Maximum glyph dimensions. | |
static constexpr uint | MAX_FONT_MIN_REC_SIZE = 20u |
Upper limit for the recommended font size in case a font file contains nonsensical values. | |
Static Protected Attributes inherited from FontCache | |
static FontCache * | caches [FS_END] |
All the font caches. | |
Additional Inherited Members | |
Static Public Member Functions inherited from FontCache | |
static void | InitializeFontCaches () |
static int | GetDefaultFontHeight (FontSize fs) |
static FontCache * | Get (FontSize fs) |
Get the font cache of a given font size. More... | |
static std::string | GetName (FontSize fs) |
Get the font name of a given font size. More... | |
Font cache for fonts that are based on a TrueType font.
Definition at line 22 of file truetypefontcache.h.
TrueTypeFontCache::TrueTypeFontCache | ( | FontSize | fs, |
int | pixels | ||
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Create a new TrueTypeFontCache.
fs | The font size that is going to be cached. |
pixels | The number of pixels this font should be high. |
Definition at line 24 of file truetypefontcache.cpp.
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overridevirtual |
Do we need to draw a glyph shadow?
Implements FontCache.
Definition at line 60 of file truetypefontcache.cpp.
References FontCache::fs, and FS_NORMAL.
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inlineoverridevirtual |
Get the nominal font size of the font.
Reimplemented from FontCache.
Definition at line 48 of file truetypefontcache.h.
References used_size.
Get the glyph (sprite) of the given key.
key | The key to look up. |
Implements FontCache.
Definition at line 78 of file truetypefontcache.cpp.
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overridevirtual |
Get the width of the glyph with the given key.
key | The key to look up. |
Implements FontCache.
Definition at line 65 of file truetypefontcache.cpp.
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inlineoverridevirtual |
Map a SpriteID to the key.
key | The key to map to. |
sprite | The sprite that is being mapped. |
Implements FontCache.
Definition at line 49 of file truetypefontcache.h.
References FontCache::parent, and FontCache::SetUnicodeGlyph().