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      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef FontFace_h
     32 #define FontFace_h
     33 
     34 #include "CSSPropertyNames.h"
     35 #include "bindings/v8/ScriptPromise.h"
     36 #include "core/css/CSSValue.h"
     37 #include "wtf/PassRefPtr.h"
     38 #include "wtf/RefCounted.h"
     39 #include "wtf/text/WTFString.h"
     40 
     41 namespace WebCore {
     42 
     43 class CSSFontFace;
     44 class CSSValueList;
     45 class Dictionary;
     46 class Document;
     47 class ExceptionState;
     48 class FontFaceReadyPromiseResolver;
     49 class StylePropertySet;
     50 class StyleRuleFontFace;
     51 
     52 class FontFace : public RefCounted<FontFace> {
     53 public:
     54     enum LoadStatus { Unloaded, Loading, Loaded, Error };
     55 
     56     static PassRefPtr<FontFace> create(const AtomicString& family, const String& source, const Dictionary&, ExceptionState&);
     57     static PassRefPtr<FontFace> create(const StyleRuleFontFace*);
     58 
     59     ~FontFace();
     60 
     61     const AtomicString& family() const { return m_family; }
     62     String style() const;
     63     String weight() const;
     64     String stretch() const;
     65     String unicodeRange() const;
     66     String variant() const;
     67     String featureSettings() const;
     68 
     69     // FIXME: Changing these attributes should affect font matching.
     70     void setFamily(const AtomicString& s, ExceptionState&) { m_family = s; }
     71     void setStyle(const String&, ExceptionState&);
     72     void setWeight(const String&, ExceptionState&);
     73     void setStretch(const String&, ExceptionState&);
     74     void setUnicodeRange(const String&, ExceptionState&);
     75     void setVariant(const String&, ExceptionState&);
     76     void setFeatureSettings(const String&, ExceptionState&);
     77 
     78     String status() const;
     79 
     80     void load();
     81     ScriptPromise ready(ExecutionContext*);
     82 
     83     LoadStatus loadStatus() const { return m_status; }
     84     void setLoadStatus(LoadStatus);
     85     unsigned traitsMask() const;
     86     PassRefPtr<CSSFontFace> createCSSFontFace(Document*);
     87     void cssFontFaceDestroyed() { m_cssFontFace = 0; }
     88 
     89 private:
     90     FontFace(PassRefPtr<CSSValue> source);
     91 
     92     void setPropertyFromString(const String&, CSSPropertyID, ExceptionState&);
     93     bool setPropertyFromStyle(const StylePropertySet*, CSSPropertyID);
     94     bool setPropertyValue(PassRefPtr<CSSValue>, CSSPropertyID);
     95     bool setFamilyValue(CSSValueList*);
     96     void resolveReadyPromises();
     97 
     98     AtomicString m_family;
     99     RefPtr<CSSValue> m_src;
    100     RefPtr<CSSValue> m_style;
    101     RefPtr<CSSValue> m_weight;
    102     RefPtr<CSSValue> m_stretch;
    103     RefPtr<CSSValue> m_unicodeRange;
    104     RefPtr<CSSValue> m_variant;
    105     RefPtr<CSSValue> m_featureSettings;
    106     LoadStatus m_status;
    107 
    108     Vector<OwnPtr<FontFaceReadyPromiseResolver> > m_readyResolvers;
    109     CSSFontFace* m_cssFontFace;
    110 };
    111 
    112 typedef Vector<RefPtr<FontFace> > FontFaceArray;
    113 
    114 } // namespace WebCore
    115 
    116 #endif // FontFace_h
    117