523 lines
10 KiB
C++
523 lines
10 KiB
C++
#include "dynamic_font.h"
|
|
#define STB_TRUETYPE_IMPLEMENTATION
|
|
#include "stb_truetype.h"
|
|
#include "os/file_access.h"
|
|
|
|
void DynamicFontData::lock() {
|
|
|
|
fr=font_data.read();
|
|
|
|
if (fr.ptr()!=last_data_ptr) {
|
|
|
|
last_data_ptr=fr.ptr();
|
|
|
|
if (!stbtt_InitFont(&info, last_data_ptr, 0)) {
|
|
valid=false;
|
|
} else {
|
|
valid=true;
|
|
}
|
|
|
|
last_data_ptr=fr.ptr();
|
|
}
|
|
}
|
|
|
|
void DynamicFontData::unlock() {
|
|
|
|
fr = DVector<uint8_t>::Read();
|
|
}
|
|
|
|
void DynamicFontData::set_font_data(const DVector<uint8_t>& p_font) {
|
|
//clear caches and stuff
|
|
ERR_FAIL_COND(font_data.size()) ;
|
|
font_data=p_font;
|
|
|
|
lock();
|
|
|
|
if (valid) {
|
|
stbtt_GetFontVMetrics(&info, &ascent, &descent, &linegap);
|
|
descent=-descent + linegap;
|
|
|
|
for(int i=32;i<1024;i++) {
|
|
for(int j=32;j<1024;j++) {
|
|
|
|
int kern = stbtt_GetCodepointKernAdvance(&info, i,j);
|
|
if (kern!=0) {
|
|
KerningPairKey kpk;
|
|
kpk.A=i;
|
|
kpk.B=j;
|
|
kerning_map[kpk]=kern;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
unlock();
|
|
//clear existing stuff
|
|
|
|
ERR_FAIL_COND(!valid);
|
|
}
|
|
|
|
Ref<DynamicFontAtSize> DynamicFontData::_get_dynamic_font_at_size(int p_size) {
|
|
|
|
ERR_FAIL_COND_V(!valid,Ref<DynamicFontAtSize>());
|
|
|
|
if (size_cache.has(p_size)) {
|
|
return Ref<DynamicFontAtSize>( size_cache[p_size] );
|
|
}
|
|
|
|
|
|
Ref<DynamicFontAtSize> dfas;
|
|
dfas.instance();
|
|
|
|
dfas->font=Ref<DynamicFontData>( this );
|
|
|
|
size_cache[p_size]=dfas.ptr();
|
|
|
|
dfas->size=p_size;
|
|
|
|
lock();
|
|
|
|
dfas->scale = stbtt_ScaleForPixelHeight(&info, p_size);
|
|
|
|
unlock();
|
|
|
|
return dfas;
|
|
|
|
}
|
|
|
|
DynamicFontData::DynamicFontData()
|
|
{
|
|
last_data_ptr=NULL;
|
|
valid=false;
|
|
}
|
|
|
|
DynamicFontData::~DynamicFontData()
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
////////////////////
|
|
|
|
float DynamicFontAtSize::get_height() const {
|
|
|
|
return (font->ascent+font->descent)*scale;
|
|
}
|
|
|
|
float DynamicFontAtSize::get_ascent() const {
|
|
|
|
return font->ascent*scale;
|
|
}
|
|
float DynamicFontAtSize::get_descent() const {
|
|
|
|
return font->descent*scale;
|
|
}
|
|
|
|
Size2 DynamicFontAtSize::get_char_size(CharType p_char,CharType p_next) const {
|
|
|
|
const_cast<DynamicFontAtSize*>(this)->_update_char(p_char);
|
|
|
|
const Character *c = char_map.getptr(p_char);
|
|
ERR_FAIL_COND_V(!c,Size2());
|
|
|
|
Size2 ret( c->advance, get_height());
|
|
|
|
if (p_next) {
|
|
DynamicFontData::KerningPairKey kpk;
|
|
kpk.A=p_char;
|
|
kpk.B=p_next;
|
|
|
|
const Map<DynamicFontData::KerningPairKey,int>::Element *K=font->kerning_map.find(kpk);
|
|
if (K) {
|
|
ret.x+=K->get()*scale;
|
|
}
|
|
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
float DynamicFontAtSize::draw_char(RID p_canvas_item, const Point2& p_pos, const CharType& p_char,const CharType& p_next,const Color& p_modulate) const {
|
|
|
|
const_cast<DynamicFontAtSize*>(this)->_update_char(p_char);
|
|
|
|
const Character * c = char_map.getptr(p_char);
|
|
|
|
if (!c) {
|
|
return 0;
|
|
}
|
|
|
|
Point2 cpos=p_pos;
|
|
cpos.x+=c->h_align;
|
|
cpos.y-=get_ascent();
|
|
cpos.y+=c->v_align;
|
|
ERR_FAIL_COND_V( c->texture_idx<-1 || c->texture_idx>=textures.size(),0);
|
|
if (c->texture_idx!=-1)
|
|
VisualServer::get_singleton()->canvas_item_add_texture_rect_region( p_canvas_item, Rect2( cpos, c->rect.size ), textures[c->texture_idx].texture->get_rid(),c->rect, p_modulate );
|
|
|
|
//textures[c->texture_idx].texture->draw(p_canvas_item,Vector2());
|
|
|
|
float ret = c->advance;
|
|
if (p_next) {
|
|
DynamicFontData::KerningPairKey kpk;
|
|
kpk.A=p_char;
|
|
kpk.B=p_next;
|
|
|
|
const Map<DynamicFontData::KerningPairKey,int>::Element *K=font->kerning_map.find(kpk);
|
|
if (K) {
|
|
ret+=K->get()*scale;
|
|
}
|
|
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
void DynamicFontAtSize::_update_char(CharType p_char) {
|
|
|
|
if (char_map.has(p_char))
|
|
return;
|
|
|
|
font->lock();
|
|
|
|
|
|
int w,h,xofs,yofs;
|
|
unsigned char * cpbitmap = stbtt_GetCodepointBitmap(&font->info, scale, scale, p_char, &w, &h, &xofs, &yofs );
|
|
|
|
if (!cpbitmap) {
|
|
//no glyph
|
|
|
|
int advance;
|
|
stbtt_GetCodepointHMetrics(&font->info, p_char, &advance, 0);
|
|
//print_line("char has no bitmap: "+itos(p_char)+" but advance is "+itos(advance*scale));
|
|
Character ch;
|
|
ch.texture_idx=-1;
|
|
ch.advance=advance*scale;
|
|
ch.h_align=0;
|
|
ch.v_align=0;
|
|
|
|
char_map[p_char]=ch;
|
|
|
|
font->unlock();
|
|
|
|
return;
|
|
}
|
|
|
|
int mw=w+rect_margin*2;
|
|
int mh=h+rect_margin*2;
|
|
|
|
if (mw>4096 || mh>4096) {
|
|
|
|
stbtt_FreeBitmap(cpbitmap,NULL);
|
|
font->unlock();
|
|
ERR_FAIL_COND(mw>4096);
|
|
ERR_FAIL_COND(mh>4096);
|
|
}
|
|
|
|
//find a texture to fit this...
|
|
|
|
int tex_index=-1;
|
|
int tex_x=0;
|
|
int tex_y=0;
|
|
|
|
for(int i=0;i<textures.size();i++) {
|
|
|
|
CharTexture &ct=textures[i];
|
|
|
|
if (mw > ct.texture_size || mh > ct.texture_size) //too big for this texture
|
|
continue;
|
|
|
|
tex_y=0x7FFFFFFF;
|
|
tex_x=0;
|
|
|
|
for(int j=0;j<ct.texture_size-mw;j++) {
|
|
|
|
int max_y=0;
|
|
|
|
for(int k=j;k<j+mw;k++) {
|
|
|
|
int y = ct.offsets[k];
|
|
if (y>max_y)
|
|
max_y=y;
|
|
}
|
|
|
|
if (max_y<tex_y) {
|
|
tex_y=max_y;
|
|
tex_x=j;
|
|
}
|
|
}
|
|
|
|
if (tex_y==0x7FFFFFFF || tex_y+mh > ct.texture_size)
|
|
continue; //fail, could not fit it here
|
|
|
|
tex_index=i;
|
|
break;
|
|
}
|
|
|
|
// print_line("CHAR: "+String::chr(p_char)+" TEX INDEX: "+itos(tex_index)+" X: "+itos(tex_x)+" Y: "+itos(tex_y));
|
|
|
|
if (tex_index==-1) {
|
|
//could not find texture to fit, create one
|
|
tex_x = 0;
|
|
tex_y = 0;
|
|
|
|
int texsize = MAX(size*8,256);
|
|
if (mw>texsize)
|
|
texsize=mw; //special case, adapt to it?
|
|
if (mh>texsize)
|
|
texsize=mh; //special case, adapt to it?
|
|
|
|
texsize=nearest_power_of_2(texsize);
|
|
|
|
texsize=MIN(texsize,4096);
|
|
|
|
|
|
CharTexture tex;
|
|
tex.texture_size=texsize;
|
|
tex.imgdata.resize(texsize*texsize*2); //grayscale alpha
|
|
|
|
{
|
|
//zero texture
|
|
DVector<uint8_t>::Write w = tex.imgdata.write();
|
|
ERR_FAIL_COND(texsize*texsize*2 > tex.imgdata.size());
|
|
for(int i=0;i<texsize*texsize*2;i++) {
|
|
w[i]=0;
|
|
}
|
|
}
|
|
tex.offsets.resize(texsize);
|
|
for(int i=0;i<texsize;i++) //zero offsets
|
|
tex.offsets[i]=0;
|
|
|
|
textures.push_back(tex);
|
|
tex_index=textures.size()-1;
|
|
|
|
}
|
|
|
|
|
|
//fit character in char texture
|
|
|
|
CharTexture &tex=textures[tex_index];
|
|
|
|
{
|
|
DVector<uint8_t>::Write wr = tex.imgdata.write();
|
|
|
|
for(int i=0;i<h;i++) {
|
|
for(int j=0;j<w;j++) {
|
|
|
|
int ofs = ( (i+tex_y+rect_margin)*tex.texture_size+j+tex_x+rect_margin)*2;
|
|
ERR_FAIL_COND(ofs >= tex.imgdata.size());
|
|
wr[ofs+0]=255; //grayscale as 1
|
|
wr[ofs+1]=cpbitmap[i*w+j]; //alpha as 0
|
|
}
|
|
}
|
|
}
|
|
|
|
//blit to image and texture
|
|
{
|
|
|
|
Image img(tex.texture_size,tex.texture_size,0,Image::FORMAT_GRAYSCALE_ALPHA,tex.imgdata);
|
|
|
|
if (tex.texture.is_null()) {
|
|
tex.texture.instance();
|
|
tex.texture->create_from_image(img,Texture::FLAG_FILTER);
|
|
} else {
|
|
tex.texture->set_data(img); //update
|
|
}
|
|
|
|
}
|
|
|
|
|
|
// update height array
|
|
|
|
for(int k=tex_x;k<tex_x+mw;k++) {
|
|
|
|
tex.offsets[k]=tex_y+mh;
|
|
}
|
|
|
|
int advance;
|
|
stbtt_GetCodepointHMetrics(&font->info, p_char, &advance, 0);
|
|
|
|
Character chr;
|
|
chr.h_align=xofs;
|
|
chr.v_align=yofs + get_ascent();
|
|
chr.advance=advance*scale;
|
|
chr.texture_idx=tex_index;
|
|
|
|
|
|
chr.rect=Rect2(tex_x+rect_margin,tex_y+rect_margin,w,h);
|
|
|
|
//print_line("CHAR: "+String::chr(p_char)+" TEX INDEX: "+itos(tex_index)+" RECT: "+chr.rect+" X OFS: "+itos(xofs)+" Y OFS: "+itos(yofs));
|
|
|
|
char_map[p_char]=chr;
|
|
|
|
stbtt_FreeBitmap(cpbitmap,NULL);
|
|
|
|
font->unlock();
|
|
|
|
}
|
|
|
|
DynamicFontAtSize::DynamicFontAtSize() {
|
|
|
|
rect_margin=1;
|
|
}
|
|
|
|
DynamicFontAtSize::~DynamicFontAtSize(){
|
|
|
|
ERR_FAIL_COND(!font.ptr());
|
|
font->size_cache.erase(size);
|
|
}
|
|
|
|
/////////////////////////
|
|
|
|
|
|
void DynamicFont::_bind_methods() {
|
|
|
|
ObjectTypeDB::bind_method(_MD("set_font_data","data:DynamicFontData"),&DynamicFont::set_font_data);
|
|
ObjectTypeDB::bind_method(_MD("get_font_data:DynamicFontData"),&DynamicFont::get_font_data);
|
|
|
|
ObjectTypeDB::bind_method(_MD("set_size","data"),&DynamicFont::set_size);
|
|
ObjectTypeDB::bind_method(_MD("get_size"),&DynamicFont::get_size);
|
|
|
|
ADD_PROPERTY(PropertyInfo(Variant::INT,"size"),_SCS("set_size"),_SCS("get_size"));
|
|
ADD_PROPERTY(PropertyInfo(Variant::OBJECT,"font",PROPERTY_HINT_RESOURCE_TYPE,"DynamicFontData"),_SCS("set_font_data"),_SCS("get_font_data"));
|
|
}
|
|
|
|
|
|
void DynamicFont::set_font_data(const Ref<DynamicFontData>& p_data) {
|
|
|
|
data=p_data;
|
|
data_at_size=data->_get_dynamic_font_at_size(size);
|
|
}
|
|
|
|
Ref<DynamicFontData> DynamicFont::get_font_data() const{
|
|
|
|
return data;
|
|
}
|
|
|
|
void DynamicFont::set_size(int p_size){
|
|
|
|
if (size==p_size)
|
|
return;
|
|
size=p_size;
|
|
ERR_FAIL_COND(p_size<1);
|
|
if (!data.is_valid())
|
|
return;
|
|
data_at_size=data->_get_dynamic_font_at_size(size);
|
|
|
|
}
|
|
int DynamicFont::get_size() const{
|
|
|
|
return size;
|
|
}
|
|
|
|
float DynamicFont::get_height() const{
|
|
|
|
if (!data_at_size.is_valid())
|
|
return 1;
|
|
|
|
return data_at_size->get_height();
|
|
}
|
|
|
|
float DynamicFont::get_ascent() const{
|
|
|
|
if (!data_at_size.is_valid())
|
|
return 1;
|
|
|
|
return data_at_size->get_ascent();
|
|
}
|
|
|
|
float DynamicFont::get_descent() const{
|
|
|
|
if (!data_at_size.is_valid())
|
|
return 1;
|
|
|
|
return data_at_size->get_descent();
|
|
|
|
}
|
|
|
|
Size2 DynamicFont::get_char_size(CharType p_char,CharType p_next) const{
|
|
|
|
if (!data_at_size.is_valid())
|
|
return Size2(1,1);
|
|
|
|
return data_at_size->get_char_size(p_char,p_next);
|
|
|
|
}
|
|
|
|
bool DynamicFont::is_distance_field_hint() const{
|
|
|
|
return false;
|
|
}
|
|
|
|
float DynamicFont::draw_char(RID p_canvas_item, const Point2& p_pos, const CharType& p_char,const CharType& p_next,const Color& p_modulate) const {
|
|
|
|
if (!data_at_size.is_valid())
|
|
return 0;
|
|
|
|
return data_at_size->draw_char(p_canvas_item,p_pos,p_char,p_next,p_modulate);
|
|
|
|
}
|
|
|
|
DynamicFont::DynamicFont() {
|
|
|
|
size=16;
|
|
}
|
|
|
|
DynamicFont::~DynamicFont() {
|
|
|
|
}
|
|
|
|
/////////////////////////
|
|
|
|
|
|
RES ResourceFormatLoaderDynamicFont::load(const String &p_path, const String& p_original_path, Error *r_error) {
|
|
|
|
if (r_error)
|
|
*r_error=ERR_FILE_CANT_OPEN;
|
|
|
|
|
|
FileAccess *f = FileAccess::open(p_path,FileAccess::READ);
|
|
ERR_FAIL_COND_V(!f,RES());
|
|
|
|
DVector<uint8_t> data;
|
|
|
|
data.resize(f->get_len());
|
|
|
|
ERR_FAIL_COND_V(data.size()==0,RES());
|
|
|
|
{
|
|
DVector<uint8_t>::Write w = data.write();
|
|
f->get_buffer(w.ptr(),data.size());
|
|
}
|
|
|
|
Ref<DynamicFontData> dfd;
|
|
dfd.instance();
|
|
dfd->set_font_data(data);
|
|
|
|
if (r_error)
|
|
*r_error=OK;
|
|
|
|
return dfd;
|
|
}
|
|
|
|
void ResourceFormatLoaderDynamicFont::get_recognized_extensions(List<String> *p_extensions) const {
|
|
|
|
p_extensions->push_back("ttf");
|
|
}
|
|
|
|
bool ResourceFormatLoaderDynamicFont::handles_type(const String& p_type) const {
|
|
|
|
return (p_type=="DynamicFontData");
|
|
}
|
|
|
|
String ResourceFormatLoaderDynamicFont::get_resource_type(const String &p_path) const {
|
|
|
|
String el = p_path.extension().to_lower();
|
|
if (el=="ttf")
|
|
return "DynamicFontData";
|
|
return "";
|
|
}
|
|
|