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#ifndef TTF_MANAGER_HPP
#define TTF_MANAGER_HPP
#include "init.h"
#include "enabler.h"
#ifdef __APPLE__
#include <SDL_ttf/SDL_ttf.h>
#else
#include <SDL/SDL_ttf.h>
#endif
#include <unordered_map>
#include <list>
using std::unordered_map;
using std::list;
struct handleid {
list<ttf_id> text;
justification just;
bool operator< (const handleid &other) const {
if (text != other.text) return text < other.text;
return just < other.just;
}
bool operator== (const handleid &other) const {
return just == other.just && text == other.text;
}
};
namespace std {
template<> struct hash<struct handleid> {
size_t operator()(handleid val) const {
size_t h = 0;
auto end = val.text.cend();
for (auto it = val.text.cbegin(); it != end; ++it) {
h += hash<ttf_id>()(*it);
}
return h + val.just;
}
};
};
struct ttf_details {
int handle;
int offset;
int width;
};
class ttf_managerst {
TTF_Font *font;
int max_handle;
int tile_width, ceiling;
double tab_width;
int em_width;
unordered_map<handleid, ttf_details> handles;
unordered_map<int, SDL_Surface*> textures;
struct todum {
int handle;
list<ttf_id> text;
int height;
int pixel_offset, pixel_width;
todum(int handle, const list<ttf_id> &t, int h, int po, int pw) :
handle(handle), text(t), height(h), pixel_offset(po), pixel_width(pw) {}
};
list<todum> todo;
public:
ttf_managerst() {
font = NULL;
max_handle = 1;
tab_width = 2;
em_width = 8;
}
~ttf_managerst() {
for (auto it = textures.cbegin(); it != textures.cend(); ++it)
SDL_FreeSurface(it->second);
if (font) TTF_CloseFont(font);
}
bool init(int ceiling, int tile_width);
bool was_init() const { return font != NULL; }
// Return the expected size of a bit of text, in tiles.
int size_text(const string &text);
ttf_details get_handle(const list<ttf_id> &text, justification just);
// Returns rendered text. Renders too, if necessary.
// The returned SDL_Surface is owned by the ttf_managerst.
SDL_Surface *get_texture(int handle);
// Garbage-collect ttf surfaces
void gc();
// Set tab-stop width (in ems, i.e. tile widths)
void set_tab_width(double width) { tab_width = width; }
// Check if TTF is currently active
bool ttf_active() const {
return was_init() &&
(::init.font.use_ttf == ttf_on ||
(::init.font.use_ttf == ttf_auto && ::init.font.ttf_limit <= ceiling));
}
};
extern ttf_managerst ttf_manager;
#endif
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