Merge hge freetype support from a local testing branch. Small bug fixes.

1 files changed, 93 insertions, 0 deletions

diff --git a/hgeft.cpp b/hgeft.cpp
new file mode 100644
index 0000000..5beca1e
--- /dev/null
+++ b/hgeft.cpp
@@ -0,0 +1,93 @@
+#include "hgeft.h"
+void hgeTTChar::Free(){if(quad.tex)hge->Texture_Free(quad.tex),quad.tex=0;}
+bool hgeTTChar::SetChar(wchar_t ch,FT_Face ttfface)
+{
+	FT_GlyphSlot slot=ttfface->glyph;
+	FT_UInt glyph_index=FT_Get_Char_Index(ttfface,ch);
+	FT_Error err=FT_Load_Glyph(ttfface,glyph_index,FT_LOAD_DEFAULT);
+	if(err)return false;
+	err=FT_Render_Glyph(ttfface->glyph,FT_RENDER_MODE_NORMAL);
+	if(err)return false;
+	_w=slot->advance.x>>6;_h=slot->bitmap.rows;//we are one line only.
+	rw=slot->bitmap.width;rh=slot->bitmap.rows;
+	quad.tex=hge->Texture_Create(
+	slot->bitmap.width?slot->bitmap.width:1,
+	slot->bitmap.rows?slot->bitmap.rows:1);
+	DWORD* tx=hge->Texture_Lock(quad.tex,false,0,0,
+	slot->bitmap.width?slot->bitmap.width:1,
+	slot->bitmap.rows?slot->bitmap.rows:1);
+	memset(tx,0,sizeof(DWORD)*(slot->bitmap.width?slot->bitmap.width:1)*(slot->bitmap.rows?slot->bitmap.rows:1));
+	int ptr=0;
+	for(int i=0;i<slot->bitmap.rows;++i)
+	for(int j=0;j<slot->bitmap.width;++j)
+	{
+#ifdef WIN32
+		tx[i*slot->bitmap.width+j]=ARGB(slot->bitmap.buffer[ptr],255,255,255);
+#else
+		tx[(slot->bitmap.rows-i-1)*slot->bitmap.width+j]=ARGB(slot->bitmap.buffer[ptr],255,255,255);
+		//In OpenGL, textures are locked upside down...
+#endif
+		ptr++;
+	}
+	hge->Texture_Unlock(quad.tex);
+	quad.v[0].tx=0;quad.v[0].ty=0;quad.v[1].tx=1;quad.v[1].ty=0;
+	quad.v[2].tx=1;quad.v[2].ty=1;quad.v[3].tx=0;quad.v[3].ty=1;
+	return true;
+}
+void hgeTTChar::Render(double x,double y,DWORD col)
+{
+	for(int i=0;i<4;++i)quad.v[i].col=col;
+	quad.v[0].x=x;quad.v[0].y=y-rh;
+	quad.v[1].x=x+rw;quad.v[1].y=y-rh;
+	quad.v[2].x=x+rw;quad.v[2].y=y;
+	quad.v[3].x=x;quad.v[3].y=y;
+	hge->Gfx_RenderQuad(&quad);
+}
+bool hgeTTFont::Init(const char *ttf,int size)
+{
+	FT_Error err=FT_Init_FreeType(&libft);
+	if(err)return false;
+	err=FT_New_Face(libft,ttf,0,&ttfface);
+	if(err)return false;
+	err=FT_Set_Char_Size(ttfface,0,size*64,96,96);
+	return true;
+}
+void hgeTTFont::UpdateString(const wchar_t *format, ...)
+{
+	for(int i=0;buf[i]!='\0';++i)chars[i].Free();
+	memset(buf,0,sizeof(buf));memset(chars,0,sizeof(chars));
+	va_list vl;
+	va_start(vl,format);
+	vswprintf(buf,1024,format,vl);
+	va_end(vl);
+	buf[1024]='\0';
+	w=h=0;
+	for(int i=0;buf[i]!='\0';++i)
+	{
+		chars[i].SetChar(buf[i],ttfface);
+		w+=chars[i].w();
+		if(chars[i].h()>h)h=chars[i].h();
+	}
+}
+void hgeTTFont::Render(double x,double y,DWORD color,int align)
+{
+	int cur;
+	if(align==0)
+	{
+		cur=x;
+		for(int i=0;buf[i]!='\0';++i)
+		{
+			chars[i].Render(cur,y,color);
+			cur+=chars[i].w();
+		}
+	}
+	if(align==1)
+	{
+		cur=x;
+		for(int i=wcslen(buf)-1;i>=0;--i)
+		{
+			chars[i].Render(cur,y,color);
+			cur-=chars[i].w();
+		}
+	}
+}