#include<hgl/graph/font/FontSource.h>

namespace hgl
{
    namespace graph
    {	
        FontSourceMulti::FontSourceMulti(FontSource *fs)
        {
            default_source=fs;

            if(fs)
                fs->RefAcquire(this);

            max_char_height=fs->GetCharHeight();
        }

        FontSourceMulti::~FontSourceMulti()
        {
            if(default_source)
                default_source->RefRelease(this);
        }

        void FontSourceMulti::Add(UnicodeBlock ub,FontSource *fs)
        {
            if(ub<UnicodeBlock::BEGIN_RANGE
             ||ub>UnicodeBlock::END_RANGE
             ||!fs
             ||fs==default_source)return;

            get_max(max_char_height,fs->GetCharHeight());

            source_map.Update(ub,fs);
        }

        void FontSourceMulti::RefreshMaxCharHeight()
        {
            max_char_height=0;

            const int count=source_map.GetCount();

            auto **fsp=source_map.GetDataList();

            for(int i=0;i<count;i++)
            {
                get_max(max_char_height,(*fsp)->right->GetCharHeight());

                ++fsp;
            }
        }
        
        void FontSourceMulti::Remove(UnicodeBlock ub)
        {
            FontSourcePointer fsp;

            if(source_map.Get(ub,fsp))
            {
                const bool refresh=(fsp->GetCharHeight()==max_char_height);

                fsp->RefRelease(this);
                source_map.DeleteByKey(ub);

                if(refresh)
                    RefreshMaxCharHeight();
            }
        }

        void FontSourceMulti::Remove(FontSource *fs)
        {
            if(!fs)return;
            if(fs==default_source)return;

            if(source_map.ValueExist(fs))
            {
                const bool refresh=(fs->GetCharHeight()==max_char_height);

                fs->RefRelease(this);
                source_map.DeleteByValue(fs);

                if(refresh)
                    RefreshMaxCharHeight();
            }
        }
        
        FontSource *FontSourceMulti::GetFontSource(const u32char &ch)
        {
            if(hgl::isspace(ch))return(nullptr);	//不能显示的数据或是空格

            const auto count=source_map.GetCount();

            if(count>0)
            {
                auto **fsp=source_map.GetDataList();

                for(int i=0;i<count;i++)
                {
                    if(IsInUnicodeBlock((*fsp)->left,ch))
                        return (*fsp)->right;

                    ++fsp;
                }
            }

            return default_source;
        }

        FontBitmap *FontSourceMulti::GetCharBitmap(const u32char &ch)
        {
            FontSource *s=GetFontSource(ch);

            if(!s)
                return(nullptr);

            return s->GetCharBitmap(ch);
        }
        
        const bool FontSourceMulti::GetCharMetrics(CharMetricsInfo &cmi,const u32char &ch)
        {
            FontSource *s=GetFontSource(ch);

            if(!s)
                return(0);

            return s->GetCharMetrics(cmi,ch);
        }
    }//namespace graph
}//namespace hgl