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r=mkaply, a=brendan nsFontServices is not used
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/*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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* License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is the Mozilla OS/2 libraries.
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*
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* The Initial Developer of the Original Code is John Fairhurst,
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* <john_fairhurst@iname.com>. Portions created by John Fairhurst are
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* Copyright (C) 1999 John Fairhurst. All Rights Reserved.
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*
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* Contributor(s):
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* Pierre Phaneuf <pp@ludusdesign.com>
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*/
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#include "nsWidgetDefs.h"
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#include "nsFontServices.h"
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#include "nsIFontNameIterator.h"
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#include "nsIFontSizeIterator.h"
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#include "nsString.h"
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#include <stdlib.h>
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// FONTMETRICS are obtained and stored in a datastructure which is optimized
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// towards the enumeration-style purpose for which they are required in this
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// toolkit (primarily to populate combobox widgets, I guess)
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class FaceInstance
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{
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PFONTMETRICS mFontMetrics;
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FaceInstance *mNext;
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public:
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FaceInstance( PFONTMETRICS aMetrics) : mFontMetrics(aMetrics), mNext(0)
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{}
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~FaceInstance()
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{
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delete mNext;
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}
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PRBool IsScalable()
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{
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return mFontMetrics->fsDefn & FM_DEFN_OUTLINE;
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}
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double GetPointSize()
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{
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return ((double)mFontMetrics->sNominalPointSize) / 10.0;
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}
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void Append( FaceInstance *aInstance)
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{
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if( IsScalable() || GetPointSize() == aInstance->GetPointSize())
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delete aInstance;
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else
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{
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if( !mNext) mNext = aInstance;
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else mNext->Append( aInstance);
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}
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}
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FaceInstance *GetNext() { return mNext; }
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};
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class FontFamily
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{
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char *mFamName;
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FaceInstance *mInstances;
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FontFamily *mNext;
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public:
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FontFamily( PFONTMETRICS aMetrics) : mFamName(0), mInstances(0), mNext(0)
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{
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mFamName = strdup( aMetrics->szFamilyname);
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mInstances = new FaceInstance( aMetrics);
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}
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~FontFamily()
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{
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if( mFamName) free( mFamName);
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delete mInstances;
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delete mNext;
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}
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void Append( FontFamily *aFamily)
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{
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if( !mNext) mNext = aFamily;
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else mNext->Append( aFamily);
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}
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FontFamily *GetNext() { return mNext; }
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FaceInstance *GetInstances() { return mInstances; }
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const char *GetName() const { return mFamName; }
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// XXX maybe have a method here to do the system atom-table thing
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// ("good grief", I know...)
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};
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class FontLister
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{
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FontFamily *mFamilies;
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FontFamily *mCache;
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PFONTMETRICS mMetrics;
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public:
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// XXX ought to take a DC or PS or something...
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FontLister() : mFamilies(0), mCache(0), mMetrics(0)
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{
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HPS hps = WinGetScreenPS( HWND_DESKTOP);
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// Get fontmetrics for the display
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LONG lWant = 0, lFonts;
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lFonts = GpiQueryFonts( hps, QF_PUBLIC | QF_PRIVATE,
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0, &lWant, 0, 0);
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mMetrics = new FONTMETRICS [ lFonts ];
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GpiQueryFonts( hps, QF_PUBLIC | QF_PRIVATE, 0, &lFonts,
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sizeof( FONTMETRICS), mMetrics);
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// now stick 'em in our datastructures
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for( LONG l = 0; l < lFonts; l++)
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{
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FontFamily *pFamily = FindFamily( mMetrics[l].szFamilyname);
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if( pFamily)
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{
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FaceInstance *pInstance = new FaceInstance( mMetrics + l);
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pFamily->GetInstances()->Append( pInstance);
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}
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else
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{
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pFamily = new FontFamily( mMetrics + l);
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if( !mFamilies) mFamilies = pFamily;
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else mFamilies->Append( pFamily);
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}
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}
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WinReleasePS( hps);
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}
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~FontLister()
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{
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delete mFamilies;
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delete [] mMetrics;
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}
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FontFamily *FindFamily( const char *aName)
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{
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if( !mCache || stricmp( mCache->GetName(), aName))
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{
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FontFamily *pFamily = mFamilies;
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while( pFamily)
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{
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if( !stricmp( pFamily->GetName(), aName))
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break;
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pFamily = pFamily->GetNext();
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}
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mCache = pFamily;
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}
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return mCache;
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}
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FontFamily *GetFamilies() { return mFamilies; }
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};
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// Now declare a couple of iterators for font size and name.
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// Could maybe share code somehow (base template class?)
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// Font-size iterator (xpcom)
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class nsFontSizeIterator : public nsIFontSizeIterator
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{
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FaceInstance *mFirst;
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FaceInstance *mCurrent;
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public:
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nsFontSizeIterator( FaceInstance *aFace)
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: mFirst(aFace), mCurrent(aFace)
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{
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NS_INIT_REFCNT();
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}
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virtual ~nsFontSizeIterator() {}
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIFontSizeIterator
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NS_IMETHOD Reset()
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{
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mCurrent = mFirst;
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return NS_OK;
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}
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NS_IMETHOD Get( double *aFontSize)
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{
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nsresult rc = NS_ERROR_FAILURE;
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if( mCurrent)
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{
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*aFontSize = mCurrent->GetPointSize();
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rc = NS_OK;
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}
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return rc;
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}
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NS_IMETHOD Advance()
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{
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nsresult rc = NS_ERROR_FAILURE;
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if( mCurrent)
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{
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mCurrent = mCurrent->GetNext();
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if( mCurrent) rc = NS_OK;
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}
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return rc;
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}
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};
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NS_IMPL_ISUPPORTS(nsFontSizeIterator, NS_GET_IID(nsIFontSizeIterator))
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// Font-name iterator (xpcom)
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class nsFontNameIterator : public nsIFontNameIterator
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{
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FontFamily *mFirst;
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FontFamily *mCurrent;
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public:
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nsFontNameIterator( FontFamily *aFamily)
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: mFirst(aFamily), mCurrent(aFamily)
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{
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NS_INIT_REFCNT();
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}
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIFontNameIterator
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NS_IMETHOD Reset()
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{
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mCurrent = mFirst;
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return NS_OK;
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}
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NS_IMETHOD Get( nsString *aString)
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{
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nsresult rc = NS_ERROR_FAILURE;
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if( mCurrent)
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{
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aString->AssignWithConversion( mCurrent->GetName());
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rc = NS_OK;
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}
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return rc;
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}
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NS_IMETHOD Advance()
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{
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nsresult rc = NS_ERROR_FAILURE;
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if( mCurrent)
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{
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mCurrent = mCurrent->GetNext();
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if( mCurrent) rc = NS_OK;
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}
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return rc;
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}
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};
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NS_IMPL_ISUPPORTS(nsFontNameIterator, NS_GET_IID(nsIFontNameIterator))
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// font retriever service
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NS_IMPL_ISUPPORTS(nsFontRetrieverService, NS_GET_IID(nsIFontRetrieverService))
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nsFontRetrieverService::nsFontRetrieverService()
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{
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NS_INIT_REFCNT();
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mFontLister = new FontLister;
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}
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nsFontRetrieverService::~nsFontRetrieverService()
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{
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delete mFontLister;
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}
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nsresult
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nsFontRetrieverService::CreateFontNameIterator( nsIFontNameIterator **aIterator)
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{
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if( !aIterator)
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return NS_ERROR_NULL_POINTER;
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*aIterator = new nsFontNameIterator( mFontLister->GetFamilies());
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NS_ADDREF(*aIterator);
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return NS_OK;
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}
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nsresult
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nsFontRetrieverService::CreateFontSizeIterator( const nsString &aFontName,
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nsIFontSizeIterator **aIterator)
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{
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if( !aIterator)
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return NS_ERROR_NULL_POINTER;
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char buffer[100];
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gModuleData.ConvertFromUcs( aFontName, buffer, 100);
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FontFamily *pFamily = mFontLister->FindFamily( buffer);
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if( !pFamily)
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return NS_ERROR_FAILURE;
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*aIterator = new nsFontSizeIterator( pFamily->GetInstances());
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NS_ADDREF(*aIterator);
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return NS_OK;
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}
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nsresult
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nsFontRetrieverService::IsFontScalable( const nsString &aFontName,
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PRBool *aResult)
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{
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if( !aResult)
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return NS_ERROR_NULL_POINTER;
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char buffer[100];
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gModuleData.ConvertFromUcs( aFontName, buffer, 100);
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FontFamily *pFamily = mFontLister->FindFamily( buffer);
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if( !pFamily)
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return NS_ERROR_FAILURE;
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*aResult = pFamily->GetInstances()->IsScalable();
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return NS_OK;
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}
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// singleton behaviour -- don't trust xpcom so do it ourselves
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nsresult NS_GetFontService( nsISupports **aResult)
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{
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if( !aResult)
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return NS_ERROR_NULL_POINTER;
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if( !gModuleData.fontService)
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{
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gModuleData.fontService = new nsFontRetrieverService;
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NS_ADDREF(gModuleData.fontService);
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}
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*aResult = gModuleData.fontService;
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return NS_OK;
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}
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@ -1,49 +0,0 @@
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/*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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* License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is the Mozilla OS/2 libraries.
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*
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* The Initial Developer of the Original Code is John Fairhurst,
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* <john_fairhurst@iname.com>. Portions created by John Fairhurst are
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* Copyright (C) 1999 John Fairhurst. All Rights Reserved.
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*
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* Contributor(s):
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*
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*/
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#ifndef _nsfontservices_h
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#define _nsfontservices_h
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#include "nsIFontRetrieverService.h"
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class FontLister;
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class nsFontRetrieverService : public nsIFontRetrieverService
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{
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FontLister *mFontLister;
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public:
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nsFontRetrieverService();
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virtual ~nsFontRetrieverService();
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIFontRetrieverService
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NS_IMETHOD CreateFontNameIterator( nsIFontNameIterator **aIterator);
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NS_IMETHOD CreateFontSizeIterator( const nsString &aFontName,
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nsIFontSizeIterator **aIterator);
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NS_IMETHOD IsFontScalable( const nsString &aFontName, PRBool *aResult);
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};
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nsresult NS_GetFontService( nsISupports **aResult);
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#endif
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