Font.c File Reference

#include <assert.h>
#include <string.h>
#include <Objectively/Hash.h>
#include <Objectively/MutableArray.h>
#include <Objectively/String.h>
#include "Font.h"
#include "Log.h"
#include "View.h"
#include "Window.h"
#include "coda.ttf.h"

Go to the source code of this file.

Macros
#define	_Class   _Font

Functions
Class *	_Font (void)
static Font *	cachedFont (const char *family, int size, int style)
static void	cacheFont (Data *data, const char *family)
static void	clearCache (void)
static void	dealloc (Object *self)
static Font *	defaultFont (void)
static void	destroy (Class *clazz)
static int	hash (const Object *self)
static void	initialize (Class *clazz)
static Font *	initWithData (Font *self, Data *data, const char *family, int size, int style)
static _Bool	isEqual (const Object *self, const Object *other)
static SDL_Surface *	renderCharacters (const Font *self, const char *chars, SDL_Color color, int wrapWidth)
static void	renderDeviceDidReset (Font *self)
static void	sizeCharacters (const Font *self, const char *chars, int *w, int *h)

Variables
static MutableDictionary *	_cache
static MutableArray *	_fonts
const EnumName	FontStyleNames []

Macro Definition Documentation

_Class

#define _Class   _Font

Definition at line 46 of file Font.c.

Function Documentation

_Font()

Class * _Font

(

void

)

Definition at line 353 of file Font.c.

                   {
    static Class *clazz;
    static Once once;
 
    do_once(&once, {
        clazz = _initialize(&(const ClassDef) {
            .name = "Font",
            .superclass = _Object(),
            .instanceSize = sizeof(Font),
            .interfaceOffset = offsetof(Font, interface),
            .interfaceSize = sizeof(FontInterface),
            .initialize = initialize,
            .destroy = destroy,
        });
    });
 
    return clazz;
}

cachedFont()

static Font * cachedFont ( const char *  family, int  size, int  style  )

static

Definition at line 124 of file Font.c.

                                                                 {
 
    if (family == NULL) {
        family = DEFAULT_FONT_FAMILY;
    }
    if (size < 1) {
        size = DEFAULT_FONT_SIZE;
    }
    if (style < FontStyleRegular || style > FontStyleStrikeThrough) {
        style = DEFAULT_FONT_STYLE;
    }
 
    const int renderSize = size * MVC_WindowScale(NULL, NULL, NULL);
 
    const Array *fonts = (Array *) _fonts;
    for (size_t i = 0; i < fonts->count; i++) {
 
        Font *font = $(fonts, objectAtIndex, i);
 
        if (!strcmp(font->family, family) &&
                font->size == size &&
                font->style == style &&
                font->renderSize == renderSize) {
            return font;
        }
    }
 
    Data *data = $((Dictionary *) _cache, objectForKeyPath, family);
    if (data) {
        Font *font = $(alloc(Font), initWithData, data, family, size, style);
        assert(font);
 
        $(_fonts, addObject, font);
        release(font);
 
        return font;
    }
 
    MVC_LogWarn("%s-%d-%d not found\n", family, size, style);
    return $$(Font, defaultFont);
}

cacheFont()

static void cacheFont ( Data *  data, const char *  family  )

static

Definition at line 116 of file Font.c.

                                                      {
    $(_cache, setObjectForKeyPath, data, family);
}

clearCache()

static void clearCache ( void  )

static

Definition at line 170 of file Font.c.

                             {
    $(_cache, removeAllObjects);
}

dealloc()

static void dealloc ( Object *  self )

static

See also

Object::dealloc(Object *)

Definition at line 53 of file Font.c.

                                  {
 
    Font *this = (Font *) self;
 
    free(this->family);
 
    release(this->data);
    
    TTF_CloseFont(this->font);
 
    super(Object, self, dealloc);
}

defaultFont()

static Font * defaultFont ( void  )

static

Definition at line 178 of file Font.c.

                               {
    static Once once;
 
    do_once(&once, {
        Data *data = $(alloc(Data), initWithConstMemory, coda_ttf, coda_ttf_len);
        assert(data);
 
        $$(Font, cacheFont, data, DEFAULT_FONT_FAMILY);
 
        release(data);
    });
 
    return $$(Font, cachedFont, DEFAULT_FONT_FAMILY, DEFAULT_FONT_SIZE, DEFAULT_FONT_STYLE);
}

destroy()

static void destroy ( Class *  clazz )

static

See also

Class::destroy(Class *)

Definition at line 341 of file Font.c.

                                  {
 
    release(_cache);
    release(_fonts);
 
    TTF_Quit();
}

hash()

static int hash ( const Object *  self )

static

See also

Object::hash(const Object *)

Definition at line 69 of file Font.c.

                                    {
 
    Font *this = (Font *) self;
 
    int hash = HASH_SEED;
    hash = HashForCString(hash, this->family);
    hash = HashForInteger(hash, this->size);
    hash = HashForInteger(hash, this->style);
    hash = HashForInteger(hash, this->renderSize);
 
    return hash;
}

initialize()

static void initialize ( Class *  clazz )

static

See also

Class::initialize(Class *)

Definition at line 313 of file Font.c.

                                     {
 
    ((ObjectInterface *) clazz->interface)->dealloc = dealloc;
    ((ObjectInterface *) clazz->interface)->hash = hash;
    ((ObjectInterface *) clazz->interface)->isEqual = isEqual;
 
    ((FontInterface *) clazz->interface)->cachedFont = cachedFont;
    ((FontInterface *) clazz->interface)->cacheFont = cacheFont;
    ((FontInterface *) clazz->interface)->clearCache = clearCache;
    ((FontInterface *) clazz->interface)->defaultFont = defaultFont;
    ((FontInterface *) clazz->interface)->initWithData = initWithData;
    ((FontInterface *) clazz->interface)->renderCharacters = renderCharacters;
    ((FontInterface *) clazz->interface)->renderDeviceDidReset = renderDeviceDidReset;
    ((FontInterface *) clazz->interface)->sizeCharacters = sizeCharacters;
 
    const int err = TTF_Init();
    assert(err == 0);
 
    _cache = $$(MutableDictionary, dictionary);
    assert(_cache);
 
    _fonts = $$(MutableArray, array);
    assert(_fonts);
}

initWithData()

static Font * initWithData ( Font *  self, Data *  data, const char *  family, int  size, int  style  )

static

Definition at line 197 of file Font.c.

                                                                                           {
 
    self = (Font *) super(Object, self, init);
    if (self) {
 
        self->data = retain(data);
        assert(self->data);
 
        self->family = strdup(family);
        assert(self->family);
 
        self->size = size;
        assert(self->size);
 
        self->style = style;
 
        $(self, renderDeviceDidReset);
    }
 
    return self;
}

isEqual()

static _Bool isEqual ( const Object *  self, const Object *  other  )

static

See also

Object::isEqual(const Object *, const Object *)

Definition at line 85 of file Font.c.

                                                              {
 
    if (super(Object, self, isEqual, other)) {
        return true;
    }
 
    if (other && $(other, isKindOfClass, _Font())) {
 
        const Font *this = (Font *) self;
        const Font *that = (Font *) other;
 
        if (!strcmp(this->family, that->family) &&
                this->size == that->size &&
                this->style == that->style &&
                this->renderSize == that->renderSize) {
            return true;
        }
    }
 
    return false;
}

renderCharacters()

static SDL_Surface * renderCharacters ( const Font *  self, const char *  chars, SDL_Color  color, int  wrapWidth  )

static

Definition at line 223 of file Font.c.

                                                                                                          {
 
    SDL_Surface *surface;
    if (wrapWidth) {
        surface = TTF_RenderUTF8_Blended_Wrapped(self->font, chars, color, wrapWidth * MVC_WindowScale(NULL, NULL, NULL));
    } else {
        surface = TTF_RenderUTF8_Blended(self->font, chars, color);
    }
 
    SDL_Surface *converted = NULL;
    if (surface) {
        converted = SDL_ConvertSurfaceFormat(surface, SDL_PIXELFORMAT_RGBA32, 0);
        SDL_FreeSurface(surface);
    } else {
        MVC_LogError("%s\n", TTF_GetError());
    }
 
    return converted;
}

renderDeviceDidReset()

static void renderDeviceDidReset ( Font *  self )

static

Definition at line 247 of file Font.c.

                                             {
 
    const int renderSize = self->size * MVC_WindowScale(NULL, NULL, NULL);
    if (renderSize != self->renderSize) {
 
        self->renderSize = renderSize;
 
        if (self->font) {
            TTF_CloseFont(self->font);
        }
 
        SDL_RWops *buffer = SDL_RWFromConstMem(self->data->bytes, (int) self->data->length);
        assert(buffer);
 
        self->font = TTF_OpenFontRW(buffer, 1, self->renderSize);
        assert(self->font);
 
        TTF_SetFontStyle(self->font, self->style);
    }
}

sizeCharacters()

static void sizeCharacters ( const Font *  self, const char *  chars, int *  w, int *  h  )

static

Definition at line 272 of file Font.c.

                                                                                {
 
    if (w) {
        *w = 0;
    }
    if (h) {
        *h = 0;
    }
 
    if (chars) {
        char *lines = strdup(chars);
 
        for (char *line = strtok(lines, "\n\r"); line; line = strtok(NULL, "\n\r")) {
 
            int line_w, line_h;
            TTF_SizeUTF8(self->font, line, &line_w, &line_h);
 
            if (w) {
                *w = max(*w, line_w);
            }
            if (h) {
                *h += line_h;
            }
        }
        free(lines);
 
        const float scale = MVC_WindowScale(NULL, NULL, NULL);
        if (w) {
            *w = ceil(*w / scale);
        }
        if (h) {
            *h = ceil(*h / scale);
        }
    }
}

Variable Documentation

_cache

MutableDictionary* _cache

static

Definition at line 109 of file Font.c.

_fonts

MutableArray* _fonts

static

Definition at line 110 of file Font.c.

FontStyleNames

const EnumName FontStyleNames[]

Initial value:

= MakeEnumNames(
    MakeEnumAlias(FontStyleRegular, regular),
    MakeEnumAlias(FontStyleBold, bold),
    MakeEnumAlias(FontStyleItalic, italic),
    MakeEnumAlias(FontStyleUnderline, underline),
    MakeEnumAlias(FontStyleStrikeThrough, strikethrough)
)

Definition at line 38 of file Font.c.