Tools/WinSN5.0Ver.iso/NETSCAP.50/WIN1998.ZIP/ns/modules/libfont/src/cf.cpp

C/C++ Source or Header | 1998-04-08 | 5.7 KB | 202 lines

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Netscape Public License
 * Version 1.0 (the "NPL"); you may not use this file except in
 * compliance with the NPL.  You may obtain a copy of the NPL at
 * http://www.mozilla.org/NPL/
 *
 * Software distributed under the NPL is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
 * for the specific language governing rights and limitations under the
 * NPL.
 *
 * The Initial Developer of this code under the NPL is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
 * Reserved.
 */
/*
 *
 * Implements a link between the (cf) CFont Interface
 * implementation and its C++ implementation viz (f) FontObject.
 *
 * dp Suresh <[e-mail]>
 */


#include "libfont.h"

// The C implementation definition of the interface.
// This links it to the C++ implementation
#include "Pcf.h"

// The actual C++ object
#include "f.h"

// Uses:    The nff interface
#include "Mnff.h"

// The finalize methods removes the font from the fontbrokers
// font object cache. Hence it needs to access the fontbroker.
#include "Pcfb.h"
#include "fb.h"

/****************************************************************************
 *                 Implementation of common interface methods                    *
 ****************************************************************************/
#ifdef OVERRIDE_cf_getInterface
extern "C" JMC_PUBLIC_API(void*)
/*ARGSUSED*/
_cf_getInterface(struct cf* self, jint op, const JMCInterfaceID* iid, JMCException* *exc)
{
    if (memcmp(iid, &nff_ID, sizeof(JMCInterfaceID)) == 0)
        return cfImpl2cf(cf2cfImpl(self));
    return _cf_getBackwardCompatibleInterface(self, iid, exc);
}
#endif /* OVERRIDE_cf_getInterface */

extern "C" JMC_PUBLIC_API(void*)
/*ARGSUSED*/
_cf_getBackwardCompatibleInterface(struct cf* self, const JMCInterfaceID* iid,
                                   struct JMCException* *exceptionThrown)
{
    return(NULL);
}

extern "C" JMC_PUBLIC_API(void)
/*ARGSUSED*/
_cf_init(struct cf* self, struct JMCException* *exceptionThrown,
         struct nfrc *rc)
{
    cfImpl *oimpl = cf2cfImpl(self);
    FontObject *fobj = new FontObject((struct nff *)self, rc);
    if (fobj == NULL)
      {
        JMC_EXCEPTION(exceptionThrown, JMCEXCEPTION_OUT_OF_MEMORY);
      }
    else
      {
        oimpl->object = fobj;
      }
    return;
}


#ifdef OVERRIDE_cf_finalize
extern "C" JMC_PUBLIC_API(void)
/*ARGSUSED*/
_cf_finalize(struct cf* self, jint op, JMCException* *exception)
{
    /* Release this font object from the fontObjectCache in the Broker */
    cfbImpl *fbimpl = cfb2cfbImpl(WF_fbc);
    FontBrokerObject *fbobj = (FontBrokerObject *)fbimpl->object;

    WF_TRACEMSG( ("NF: Deleting font object [0x%x].", fbobj) );
    fbobj->fontObjectCache.releaseFont((struct nff *)self);

    /* Delete the font object */
    struct cfImpl *oimpl = cf2cfImpl(self);
    FontObject *fob = (FontObject *)oimpl->object;
    delete fob;

    /* Finally, free the memory for the object containter. */
    XP_FREEIF(self);
}
#endif /* OVERRIDE_cf_finalize */


#ifdef OVERRIDE_cf_release
JMC_PUBLIC_API(void)
/*ARGSUSED*/
_cf_release(struct cf* self, jint op, JMCException* *exc)
{
    cfImplHeader* impl = (cfImplHeader*)cf2cfImpl(self);
    --impl->refcount;

    // Run the GC
    cfImpl *oimpl = cf2cfImpl(self);
    FontObject *fob = (FontObject *)oimpl->object;
    int ret = fob->GC();

    if (impl->refcount == 0)
    {
        cf_finalize(self, exc);
    }
}
#endif


/****************************************************************************
 *                 Implementation of Object specific methods                    *
 ****************************************************************************/

extern "C" JMC_PUBLIC_API(jint)
/*ARGSUSED*/
_cf_GetState(struct cf* self, jint op, struct JMCException* *exceptionThrown)
{
    cfImpl *oimpl = cf2cfImpl(self);
    XP_ASSERT(oimpl->header.refcount);
    FontObject *fob = (FontObject *)oimpl->object;
    return((jint)fob->GetState());
}


extern "C" JMC_PUBLIC_API(void*)
/*ARGSUSED*/
_cf_EnumerateSizes(struct cf* self, jint op, struct nfrc *rc,
                   struct JMCException* *exceptionThrown)
{
    cfImpl *oimpl = cf2cfImpl(self);
    XP_ASSERT(oimpl->header.refcount);
    FontObject *fob = (FontObject *)oimpl->object;
    return(fob->EnumerateSizes(rc));
}


extern "C" JMC_PUBLIC_API(struct nfrf*)
/*ARGSUSED*/
_cf_GetRenderableFont(struct cf* self, jint op, struct nfrc *rc,
                      jdouble pointsize, struct JMCException* *exceptionThrown)
{
    cfImpl *oimpl = cf2cfImpl(self);
    XP_ASSERT(oimpl->header.refcount);
    FontObject *fob = (FontObject *)oimpl->object;
    return(fob->GetRenderableFont(rc, pointsize));
}


extern "C" JMC_PUBLIC_API(struct nffmi*)
/*ARGSUSED*/
_cf_GetMatchInfo(struct cf* self, jint op, struct nfrc *rc,
                 jint pointsize, struct JMCException* *exceptionThrown)
{
    cfImpl *oimpl = cf2cfImpl(self);
    XP_ASSERT(oimpl->header.refcount);
    FontObject *fob = (FontObject *)oimpl->object;
    return(fob->GetMatchInfo(rc, pointsize));
}


extern "C" JMC_PUBLIC_API(jint)
/*ARGSUSED*/
_cf_GetRcMajorType(struct cf* self, jint op,
                   struct JMCException* *exceptionThrown)
{
    cfImpl *oimpl = cf2cfImpl(self);
    XP_ASSERT(oimpl->header.refcount);
    FontObject *fob = (FontObject *)oimpl->object;
    return(fob->GetRcMajorType());
}


extern "C" JMC_PUBLIC_API(jint)
/*ARGSUSED*/
_cf_GetRcMinorType(struct cf* self, jint op,
                   struct JMCException* *exceptionThrown)
{
    cfImpl *oimpl = cf2cfImpl(self);
    XP_ASSERT(oimpl->header.refcount);
    FontObject *fob = (FontObject *)oimpl->object;
    return(fob->GetRcMinorType());
}