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      1 /*
      2  * Copyright (C) 2012 Adobe Systems Incorporated. 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
      6  * are met:
      7  *
      8  * 1. Redistributions of source code must retain the above
      9  *    copyright notice, this list of conditions and the following
     10  *    disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above
     12  *    copyright notice, this list of conditions and the following
     13  *    disclaimer in the documentation and/or other materials
     14  *    provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AS IS AND ANY
     17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
     20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
     21  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     22  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     23  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
     25  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
     26  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  */
     29 
     30 #ifndef CustomFilterParameter_h
     31 #define CustomFilterParameter_h
     32 
     33 #include "platform/PlatformExport.h"
     34 #include "wtf/PassRefPtr.h"
     35 #include "wtf/RefCounted.h"
     36 #include "wtf/text/WTFString.h"
     37 
     38 namespace WebCore {
     39 
     40 class PLATFORM_EXPORT CustomFilterParameter : public RefCounted<CustomFilterParameter> {
     41 public:
     42     // FIXME: Implement other parameters types:
     43     // booleans: https://bugs.webkit.org/show_bug.cgi?id=76438
     44     // textures: https://bugs.webkit.org/show_bug.cgi?id=71442
     45     // 3d-transforms: https://bugs.webkit.org/show_bug.cgi?id=71443
     46     // mat2, mat3, mat4: https://bugs.webkit.org/show_bug.cgi?id=71444
     47     enum ParameterType {
     48         Array,
     49         Number,
     50         Transform
     51     };
     52 
     53     virtual ~CustomFilterParameter() { }
     54 
     55     ParameterType parameterType() const { return m_type; }
     56     const String& name() const { return m_name; }
     57 
     58     bool isSameType(const CustomFilterParameter& other) const { return parameterType() == other.parameterType(); }
     59 
     60     virtual PassRefPtr<CustomFilterParameter> blend(const CustomFilterParameter*, double progress) = 0;
     61     virtual bool operator==(const CustomFilterParameter&) const = 0;
     62     bool operator!=(const CustomFilterParameter& o) const { return !(*this == o); }
     63 protected:
     64     CustomFilterParameter(ParameterType type, const String& name)
     65         : m_name(name)
     66         , m_type(type)
     67     {
     68     }
     69 
     70 private:
     71     String m_name;
     72     ParameterType m_type;
     73 };
     74 
     75 } // namespace WebCore
     76 
     77 
     78 #endif // CustomFilterParameter_h
     79