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Allow using multiple ttf files with separate styles 

This is done by keeping a BoostHash of all the styles we have
and their corresponding paths, and passing the style when
we want to get the font.
This commit is contained in:
Varun Patil 2019-05-11 16:54:05 +05:30
parent 33c8a42d88
commit bcdd187f69
2 changed files with 18 additions and 26 deletions
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41
src/font.cpp
View File

@ -49,21 +49,13 @@ BUNDLED_FONT_DECL(liberation)
#define BNDL_F_L(f) BUNDLED_FONT_L(f) #define BNDL_F_L(f) BUNDLED_FONT_L(f)
typedef std::pair<std::string, int> FontKey; typedef std::pair<std::string, int> FontKey;
typedef BoostHash<int, std::string> FontSet;
static SDL_RWops *openBundledFont() static SDL_RWops *openBundledFont()
{ {
return SDL_RWFromConstMem(BNDL_F_D(BUNDLED_FONT), BNDL_F_L(BUNDLED_FONT)); return SDL_RWFromConstMem(BNDL_F_D(BUNDLED_FONT), BNDL_F_L(BUNDLED_FONT));
} }
struct FontSet
{
/* 'Regular' style */
std::string regular;
/* Any other styles (used in case no 'Regular' exists) */
std::string other;
};
struct SharedFontStatePrivate struct SharedFontStatePrivate
{ {
/* Maps: font family name, To: substituted family name, /* Maps: font family name, To: substituted family name,
@ -117,20 +109,18 @@ void SharedFontState::initFontSetCB(SDL_RWops &ops,
return; return;
std::string family = TTF_FontFaceFamilyName(font); std::string family = TTF_FontFaceFamilyName(font);
std::string style = TTF_FontFaceStyleName(font); int style = TTF_GetFontStyle(font);
TTF_CloseFont(font); TTF_CloseFont(font);
FontSet &set = p->sets[family]; FontSet &set = p->sets[family];
if (style == "Regular") set[style] = filename;
set.regular = filename;
else
set.other = filename;
} }
_TTF_Font *SharedFontState::getFont(std::string family, _TTF_Font *SharedFontState::getFont(std::string family,
int size) int size,
int style)
{ {
/* Check for substitutions */ /* Check for substitutions */
if (p->subs.contains(family)) if (p->subs.contains(family))
@ -139,7 +129,7 @@ _TTF_Font *SharedFontState::getFont(std::string family,
/* Find out if the font asset exists */ /* Find out if the font asset exists */
const FontSet &req = p->sets[family]; const FontSet &req = p->sets[family];
if (req.regular.empty() && req.other.empty()) if (req.cbegin() == req.cend())
{ {
/* Doesn't exist; use built-in font */ /* Doesn't exist; use built-in font */
family = ""; family = "";
@ -162,10 +152,10 @@ _TTF_Font *SharedFontState::getFont(std::string family,
} }
else else
{ {
/* Use 'other' path as alternative in case /* Use the style path as default with the
* we have no 'regular' styled font asset */ * first key we have as alternative */
const char *path = !req.regular.empty() const char *path = req.value(req.contains(style)
? req.regular.c_str() : req.other.c_str(); ? style : req.cbegin()->first).c_str();
ops = SDL_AllocRW(); ops = SDL_AllocRW();
shState->fileSystem().openReadRaw(*ops, path, true); shState->fileSystem().openReadRaw(*ops, path, true);
@ -192,7 +182,7 @@ bool SharedFontState::fontPresent(std::string family) const
const FontSet &set = p->sets[family]; const FontSet &set = p->sets[family];
return !(set.regular.empty() && set.other.empty()); return !(set.cbegin() == set.cend());
} }
_TTF_Font *SharedFontState::openBundled(int size) _TTF_Font *SharedFontState::openBundled(int size)
@ -443,10 +433,6 @@ void Font::initDefaults(const SharedFontState &sfs)
_TTF_Font *Font::getSdlFont() _TTF_Font *Font::getSdlFont()
{ {
if (!p->sdlFont)
p->sdlFont = shState->fontState().getFont(p->name.c_str(),
p->size);
int style = TTF_STYLE_NORMAL; int style = TTF_STYLE_NORMAL;
if (p->bold) if (p->bold)
@ -455,6 +441,11 @@ _TTF_Font *Font::getSdlFont()
if (p->italic) if (p->italic)
style |= TTF_STYLE_ITALIC; style |= TTF_STYLE_ITALIC;
if (!p->sdlFont)
p->sdlFont = shState->fontState().getFont(p->name.c_str(),
p->size,
style);
TTF_SetFontStyle(p->sdlFont, style); TTF_SetFontStyle(p->sdlFont, style);
return p->sdlFont; return p->sdlFont;

3
src/font.h
View File

@ -48,7 +48,8 @@ public:
const std::string &filename); const std::string &filename);
_TTF_Font *getFont(std::string family, _TTF_Font *getFont(std::string family,
int size); int size,
int style);
bool fontPresent(std::string family) const; bool fontPresent(std::string family) const;