9438f6cc1f
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@11358 a95241bf-73f2-0310-859d-f6bbb57e9c96
131 lines
5.0 KiB
C++
131 lines
5.0 KiB
C++
/*****************************************************************************/
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// File: FuncTranslator.h
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// Class: BFuncTranslator
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// Author: Michael Wilber, Translation Kit Team
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// Originally Created: 2002-06-11
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//
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// Description:
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// This header file contains the BTranslator based object for
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// function based translators, i.e. the translators which export
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// each translator function individually, instead of exporting
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// the make_nth_translator() function, which returns the
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// translator as a class derived from BTranslator.
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//
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// All of the BeOS R5 translators are function based translators.
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// All of the Gobe Productive translators are function based
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// translators. Nearly all of the translators I've found, with
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// the exception of the Haiku translators, are function based.
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//
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// This class is used by the OpenBeOS BTranslatorRoster
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// so that function based translators, make_nth_translator()
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// translators and private BTranslator objects could be
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// accessed in the same way.
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//
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//
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// Copyright (c) 2002 OpenBeOS Project
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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/*****************************************************************************/
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#ifndef _FUNC_TRANSLATOR_H
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#define _FUNC_TRANSLATOR_H
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#include <Translator.h>
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#include <image.h>
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#include <TranslationDefs.h>
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// Structure used to hold the collection of function pointers and
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// public variables exported by function based translator add-ons.
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struct translator_data {
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const char *translatorName;
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const char *translatorInfo;
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int32 translatorVersion;
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const translation_format *inputFormats;
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const translation_format *outputFormats;
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status_t (*Identify)(BPositionIO *inSource,
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const translation_format *inFormat, BMessage *ioExtension,
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translator_info *outInfo, uint32 outType);
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status_t (*Translate)(BPositionIO *inSource,
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const translator_info *inInfo, BMessage *ioExtension,
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uint32 outType, BPositionIO *outDestination);
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status_t (*MakeConfig)(BMessage *ioExtension,
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BView **outView, BRect *outExtent);
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status_t (*GetConfigMessage)(BMessage *ioExtension);
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};
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class BFuncTranslator : public BTranslator {
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public:
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BFuncTranslator(const translator_data *kpData);
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// assigns the translator to the object
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virtual const char *TranslatorName() const;
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// returns the short translator name
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virtual const char *TranslatorInfo() const;
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// returns the verbose translator name/description
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virtual int32 TranslatorVersion() const;
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// returns the translator's version
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virtual const translation_format *InputFormats(int32 *out_count) const;
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// returns the list of supported input formats
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virtual const translation_format *OutputFormats(int32 *out_count) const;
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// returns the list of supported output formats
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virtual status_t Identify(BPositionIO *inSource,
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const translation_format *inFormat, BMessage *ioExtension,
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translator_info *outInfo, uint32 outType);
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// identifies wether or not the translator can handle
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// translating the data in inSource
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virtual status_t Translate(BPositionIO *inSource,
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const translator_info *inInfo, BMessage *ioExtension, uint32 outType,
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BPositionIO * outDestination);
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// translates the data from inSource to outDestination
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// in the format outType
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virtual status_t MakeConfigurationView(BMessage *ioExtension,
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BView **outView, BRect *outExtent);
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// creates a view object that allows the user to change
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// the translator's options
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// (not required to be in all translators)
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virtual status_t GetConfigurationMessage(BMessage *ioExtension);
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// returns the current settings of the translator
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// (not required to be in all translators)
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protected:
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virtual ~BFuncTranslator();
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// This object is deleted by calling Release(),
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// it can not be deleted directly. See BTranslator in the Be Book
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private:
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translator_data *fpData;
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// This contains all of the member variables used by this class.
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// It also contains pointers to functions that the member functions
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// use to do all of the actual work for this class.
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};
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#endif // _FUNC_TRANSLATOR_H
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