1 files changed, 180 insertions, 121 deletions

diff --git a/scene/resources/dynamic_font.cpp b/scene/resources/dynamic_font.cpp
index 19aa0e79cc..c76b5f3d3a 100644
--- a/scene/resources/dynamic_font.cpp
+++ b/scene/resources/dynamic_font.cpp
@@ -1,65 +1,11 @@
+#ifdef FREETYPE_ENABLED
 #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] );
@@ -67,6 +13,7 @@ Ref<DynamicFontAtSize> DynamicFontData::_get_dynamic_font_at_size(int p_size) {
 
 
 	Ref<DynamicFontAtSize> dfas;
+
 	dfas.instance();
 
 	dfas->font=Ref<DynamicFontData>( this );
@@ -74,21 +21,34 @@ Ref<DynamicFontAtSize> DynamicFontData::_get_dynamic_font_at_size(int p_size) {
 	size_cache[p_size]=dfas.ptr();
 
 	dfas->size=p_size;
+	dfas->_load();
+
+	return dfas;
 
-	lock();
+}
 
-	dfas->scale = stbtt_ScaleForPixelHeight(&info, p_size);
+void DynamicFontData::set_font_ptr(const uint8_t* p_font_mem,int p_font_mem_size) {
 
-	unlock();
+	font_mem=p_font_mem;
+	font_mem_size=p_font_mem_size;
+}
 
-	return dfas;
+void DynamicFontData::set_font_path(const String& p_path) {
+
+	font_path=p_path;
+}
+
+void DynamicFontData::set_force_autohinter(bool p_force) {
 
+	force_autohinter=p_force;
 }
 
 DynamicFontData::DynamicFontData()
 {
-	last_data_ptr=NULL;
-	valid=false;
+
+	force_autohinter=false;
+	font_mem=NULL;
+	font_mem_size=0;
 }
 
 DynamicFontData::~DynamicFontData()
@@ -100,22 +60,106 @@ DynamicFontData::~DynamicFontData()
 
 ////////////////////
 
+Error DynamicFontAtSize::_load() {
+
+
+	int error = FT_Init_FreeType( &library );
+
+	ERR_EXPLAIN(TTR("Error initializing FreeType."));
+	ERR_FAIL_COND_V( error !=0, ERR_CANT_CREATE );
+
+	if (font->font_path!=String()) {
+
+		FileAccess *f=FileAccess::open(font->font_path,FileAccess::READ);
+		ERR_FAIL_COND_V(!f,ERR_CANT_OPEN);
+
+		memset(&stream,0,sizeof(FT_StreamRec));
+		stream.base=NULL;
+		stream.size=f->get_len();
+		stream.pos=0;
+		stream.descriptor.pointer=f;
+		stream.read=_ft_stream_io;
+		stream.close=_ft_stream_close;
+
+		FT_Open_Args fargs;
+		memset(&fargs,0,sizeof(FT_Open_Args));
+		fargs.flags=FT_OPEN_STREAM;
+		fargs.stream=&stream;
+		error = FT_Open_Face( library,&fargs,0,&face);
+	} else if (font->font_mem) {
+
+		memset(&stream,0,sizeof(FT_StreamRec));
+		stream.base=(unsigned char*)font->font_mem;
+		stream.size=font->font_mem_size;
+		stream.pos=0;
+
+		FT_Open_Args fargs;
+		memset(&fargs,0,sizeof(FT_Open_Args));
+		fargs.memory_base=(unsigned char*)font->font_mem;
+		fargs.memory_size=font->font_mem_size;
+		fargs.flags= FT_OPEN_MEMORY;
+		fargs.stream=&stream;
+		error = FT_Open_Face( library,&fargs,0,&face);
+
+	} else {
+		ERR_EXPLAIN("DynamicFont uninitialized");
+		ERR_FAIL_V(ERR_UNCONFIGURED);
+	}
+
+	//error = FT_New_Face( library, src_path.utf8().get_data(),0,&face );
+
+	if ( error == FT_Err_Unknown_File_Format ) {
+		ERR_EXPLAIN(TTR("Unknown font format."));
+		FT_Done_FreeType( library );
+
+	} else if ( error ) {
+
+		ERR_EXPLAIN(TTR("Error loading font."));
+		FT_Done_FreeType( library );
+
+	}
+
+	ERR_FAIL_COND_V(error,ERR_FILE_CANT_OPEN);
+
+
+	/*error = FT_Set_Char_Size(face,0,64*size,512,512);
+
+	if ( error ) {
+		FT_Done_FreeType( library );
+		ERR_EXPLAIN(TTR("Invalid font size."));
+		ERR_FAIL_COND_V( error, ERR_INVALID_PARAMETER );
+	}*/
+
+	error = FT_Set_Pixel_Sizes(face,0,size);
+
+	ascent=face->size->metrics.ascender>>6;
+	descent=-face->size->metrics.descender>>6;
+	linegap=0;
+
+	//print_line("ASCENT: "+itos(ascent)+" descent "+itos(descent)+" hinted: "+itos(face->face_flags&FT_FACE_FLAG_HINTER));
+
+	valid=true;
+	return OK;
+}
+
 float DynamicFontAtSize::get_height() const {
 
-	return (font->ascent+font->descent)*scale;
+	return ascent+descent;
 }
 
 float DynamicFontAtSize::get_ascent() const {
 
-	return font->ascent*scale;
+	return ascent;
 }
 float DynamicFontAtSize::get_descent() const {
 
-	return font->descent*scale;
+	return descent;
 }
 
 Size2 DynamicFontAtSize::get_char_size(CharType p_char,CharType p_next) const {
 
+	if (!valid)
+		return Size2(1,1);
 	const_cast<DynamicFontAtSize*>(this)->_update_char(p_char);
 
 	const Character *c = char_map.getptr(p_char);
@@ -124,14 +168,9 @@ Size2 DynamicFontAtSize::get_char_size(CharType p_char,CharType p_next) const {
 	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;
-		}
+		FT_Vector  delta;
+		FT_Get_Kerning( face, p_char,p_next,  FT_KERNING_DEFAULT, &delta );
+		ret.x+=delta.x>>6;
 
 	}
 
@@ -141,6 +180,9 @@ Size2 DynamicFontAtSize::get_char_size(CharType p_char,CharType p_next) const {
 
 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 {
 
+	if (!valid)
+		return 0;
+
 	const_cast<DynamicFontAtSize*>(this)->_update_char(p_char);
 
 	const Character * c = char_map.getptr(p_char);
@@ -161,58 +203,84 @@ float DynamicFontAtSize::draw_char(RID p_canvas_item, const Point2& p_pos, const
 
 	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;
-		}
+		FT_Vector  delta;
+		FT_Get_Kerning( face, p_char,p_next,  FT_KERNING_DEFAULT, &delta );
+		ret+=delta.x>>6;
 
 	}
 
 	return ret;
 }
 
+unsigned long DynamicFontAtSize::_ft_stream_io(FT_Stream      stream,  unsigned long   offset,  unsigned char*  buffer,  unsigned long   count ) {
+
+
+	FileAccess *f=(FileAccess*)stream->descriptor.pointer;
+
+	if (f->get_pos()!=offset) {
+		f->seek(offset);
+
+	}
+
+	if (count==0)
+		return 0;
+
+	return f->get_buffer(buffer,count);
+}
+void DynamicFontAtSize::_ft_stream_close(FT_Stream stream) {
+
+	FileAccess *f=(FileAccess*)stream->descriptor.pointer;
+	f->close();
+	memdelete(f);
+}
+
 
 void DynamicFontAtSize::_update_char(CharType p_char) {
 
 	if (char_map.has(p_char))
 		return;
 
-	font->lock();
-
+	_THREAD_SAFE_METHOD_
 
-	int w,h,xofs,yofs;
-	unsigned char * cpbitmap = stbtt_GetCodepointBitmap(&font->info, scale, scale, p_char, &w, &h, &xofs, &yofs );
+	FT_GlyphSlot slot = face->glyph;
 
-	if (!cpbitmap) {
-		//no glyph
+	int error = FT_Load_Char( face, p_char, FT_LOAD_RENDER|(font->force_autohinter?FT_LOAD_FORCE_AUTOHINT:0) );
+	if (!error) {
+		error = FT_Render_Glyph( face->glyph, ft_render_mode_normal );
+	}
+	if (error) {
 
-		int advance;
-		stbtt_GetCodepointHMetrics(&font->info, p_char, &advance, 0);
+		int advance=0;
+		//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.advance=advance;
 		ch.h_align=0;
 		ch.v_align=0;
 
 		char_map[p_char]=ch;
 
-		font->unlock();
 
 		return;
 	}
 
+
+
+	int w = slot->bitmap.width;
+	int h = slot->bitmap.rows;
+	int p = slot->bitmap.pitch;
+	int yofs=slot->bitmap_top;
+	int xofs=slot->bitmap_left;
+	int advance=slot->advance.x>>6;
+
+
 	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);
 	}
@@ -304,13 +372,14 @@ void DynamicFontAtSize::_update_char(CharType p_char) {
 	{
 		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
+				wr[ofs+1]=slot->bitmap.buffer[i*slot->bitmap.width+j];
 			}
 		}
 	}
@@ -322,7 +391,7 @@ void DynamicFontAtSize::_update_char(CharType p_char) {
 
 		if (tex.texture.is_null()) {
 			tex.texture.instance();
-			tex.texture->create_from_image(img,Texture::FLAG_FILTER);
+			tex.texture->create_from_image(img,0/*Texture::FLAG_FILTER*/);
 		} else {
 			tex.texture->set_data(img); //update
 		}
@@ -337,13 +406,11 @@ void DynamicFontAtSize::_update_char(CharType p_char) {
 		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.v_align=ascent-yofs;// + ascent - descent;
+	chr.advance=advance;
 	chr.texture_idx=tex_index;
 
 
@@ -353,21 +420,24 @@ void DynamicFontAtSize::_update_char(CharType p_char) {
 
 	char_map[p_char]=chr;
 
-	stbtt_FreeBitmap(cpbitmap,NULL);
-
-	font->unlock();
 
 }
 
 DynamicFontAtSize::DynamicFontAtSize() {
 
+	valid=false;
 	rect_margin=1;
+	ascent=1;
+	descent=1;
+	linegap=1;
 }
 
 DynamicFontAtSize::~DynamicFontAtSize(){
 
-	ERR_FAIL_COND(!font.ptr());
-	font->size_cache.erase(size);
+	if (valid) {
+		FT_Done_FreeType( library );
+		font->size_cache.erase(size);
+	}
 }
 
 /////////////////////////
@@ -478,34 +548,21 @@ RES ResourceFormatLoaderDynamicFont::load(const String &p_path, const String& p_
 	if (r_error)
 		*r_error=ERR_FILE_CANT_OPEN;
 
+	Ref<DynamicFontData> dfont;
+	dfont.instance();;
+	dfont->set_font_path(p_path);
 
-	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;
+	return dfont;
 }
 
 void ResourceFormatLoaderDynamicFont::get_recognized_extensions(List<String> *p_extensions) const {
 
 	p_extensions->push_back("ttf");
+	p_extensions->push_back("otf");
 }
 
 bool ResourceFormatLoaderDynamicFont::handles_type(const String& p_type) const {
@@ -516,8 +573,10 @@ bool ResourceFormatLoaderDynamicFont::handles_type(const String& p_type) const {
 String ResourceFormatLoaderDynamicFont::get_resource_type(const String &p_path) const {
 
 	String el = p_path.extension().to_lower();
-	if (el=="ttf")
+	if (el=="ttf" || el=="otf")
 		return "DynamicFontData";
 	return "";
 }
 
+
+#endif