CWE-ou-minkata/Sources/Plasma/PubUtilLib/plGImage/plFontCache.cpp

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*==LICENSE==*/
///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//  plFontCache Class Header                                                 //
//  Generic cache lib for our plFonts. Basically just a simple plFont        //
//  manager.                                                                 //
//                                                                           //
//  Cyan, Inc.                                                               //
//                                                                           //
//// Version History //////////////////////////////////////////////////////////
//                                                                           //
//  3.12.2003 mcn - Created.                                                 //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#include "plFontCache.h"

#include "plFont.h"
#include "plStatusLog/plStatusLog.h"
#include "pnMessage/plRefMsg.h"

#include "hsResMgr.h"
#include "pnKeyedObject/plUoid.h"


const char* plFontCache::kCustFontExtension = ".prf";


plFontCache *plFontCache::fInstance = nil;

plFontCache::plFontCache()
{
    RegisterAs( kFontCache_KEY );
    fInstance = this;
}

plFontCache::~plFontCache()
{
    Clear();
    fInstance = nil;
}

plFontCache &plFontCache::GetInstance( void )
{
    return *fInstance;
}

void    plFontCache::Clear( void )
{
}

plFont  *plFontCache::GetFont( const plString &face, uint8_t size, uint32_t fontFlags )
{
    uint32_t  i, currIdx = (uint32_t)-1;
    int     currDeltaSize = 100000;


    for( i = 0; i < fCache.GetCount(); i++ )
    {
        if (fCache[i]->GetFace().CompareNI(face, face.GetSize()) == 0 &&
            (fCache[i]->GetFlags() == fontFlags))
        {
            int delta = fCache[ i ]->GetSize() - size;
            if( delta < 0 )
                delta = -delta;
            if( delta < currDeltaSize )
            {
                currDeltaSize = delta;
                currIdx = i;
            }
        }
    }

    if( currIdx != (uint32_t)-1 )
    {
        //if( currDeltaSize > 0 )
        //  plStatusLog::AddLineS( "pipeline.log", "Warning: plFontCache is matching %s %d (requested %s %d)", fCache[ currIdx ]->GetFace(), fCache[ currIdx ]->GetSize(), face, size );
        return fCache[ currIdx ];
    }

    // If we failed, it's possible we have a face saved as "Times", for example, and someone's
    // asking for "Times New Roman", so strip all but the first word from our font and try the search again
    ssize_t sp = face.Find(' ');
    if (sp >= 0)
    {
        return GetFont(face.Left(sp), size, fontFlags);
    }
    else if( fontFlags != 0 )
    {
        // Hmm, well ok, just to be nice, try without our flags
        plFont *f = GetFont( face, size, 0 );
        if( f != nil )
        {
            //plStatusLog::AddLineS( "pipeline.log", "Warning: plFontCache is substituting %s %d regular (flags 0x%x could not be matched)", f->GetFace(), f->GetSize(), fontFlags );
            return f;
        }
    }

    //plStatusLog::AddLineS( "pipeline.log", "Warning: plFontCache was unable to match %s %d (0x%x)", face, size, fontFlags );
    return nil;
}

void plFontCache::LoadCustomFonts( const plFileName &dir )
{
    fCustFontDir = dir;
    ILoadCustomFonts();
}

void plFontCache::ILoadCustomFonts( void )
{
    if (!fCustFontDir.IsValid())
        return;

    // Iterate through all the custom fonts in our dir
    std::vector<plFileName> fonts = plFileSystem::ListDir(fCustFontDir, "*.p2f");
    for (auto iter = fonts.begin(); iter != fonts.end(); ++iter)
    {
        plFont *font = new plFont;
        if (!font->LoadFromP2FFile(*iter))
            delete font;
        else
        {
            plString keyName;
            if (font->GetKey() == nil)
            {
                keyName = plFormat("{}-{}", font->GetFace(), font->GetSize());
                hsgResMgr::ResMgr()->NewKey( keyName, font, plLocation::kGlobalFixedLoc );
            }

            hsgResMgr::ResMgr()->AddViaNotify( font->GetKey(),
                                               new plGenRefMsg( GetKey(), plRefMsg::kOnCreate, 0, -1 ),
                                               plRefFlags::kActiveRef );

            //plStatusLog::AddLineS( "pipeline.log", "FontCache: Added custom font %s", keyName.c_str() );

        }
    }
}

bool    plFontCache::MsgReceive( plMessage* pMsg )
{
    plGenRefMsg *ref = plGenRefMsg::ConvertNoRef( pMsg );
    if( ref != nil )
    {
        if( ref->GetContext() & ( plRefMsg::kOnCreate | plRefMsg::kOnRequest | plRefMsg::kOnReplace ) )
        {
            fCache.Append( plFont::ConvertNoRef( ref->GetRef() ) );
        }
        else
        {
            plFont *font = plFont::ConvertNoRef( ref->GetRef() );
            uint32_t idx = fCache.Find( font );
            if( idx != fCache.kMissingIndex )
                fCache.Remove( idx );
        }
        return true;
    }

    return hsKeyedObject::MsgReceive( pMsg );
}