110 lines
4.1 KiB
C++
110 lines
4.1 KiB
C++
/***************************************************************************
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* Copyright ?2007 TWAIN Working Group:
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* Adobe Systems Incorporated, AnyDoc Software Inc., Eastman Kodak Company,
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* Fujitsu Computer Products of America, JFL Peripheral Solutions Inc.,
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* Ricoh Corporation, and Xerox Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the TWAIN Working Group nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TWAIN Working Group ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL TWAIN Working Group BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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***************************************************************************/
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/**
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* @file TWAINContainerFix32.h
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* Fix32 Range Container class for negotiating capabilities.
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* @author TWAIN Working Group
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* @date April 2007
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*/
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#ifndef __CTWAINContainerFix32RangeRANGE_H__
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#define __CTWAINContainerFix32RangeRANGE_H__
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#include "TWAINContainer.h"
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typedef struct {
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float fMinValue; /* Starting value in the range. */
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float fMaxValue; /* Final value in the range. */
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float fStepSize; /* Increment from MinValue to MaxValue. */
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float fCurrentValue; /* The value that is currently in effect. */
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} FLOAT_RANGE;
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/**
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* This class can be used for any Fix32 based TWAIN container.
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*/
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class CTWAINContainerFix32Range : public CTWAINContainer
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{
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friend class CTWAIN_UI;
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public:
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/**
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* Constructor.
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* @param[in] _unCapID Capability ID
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* @param[in] _unItemType TWAIN Type TWTY_xxxx being stored.
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* @param[in] _unGetType TWON_xxxx container
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* @param[in] _nSupportedQueries the supported querie types TWQC_xxxx
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*/
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CTWAINContainerFix32Range(const TW_UINT16 _unCapID,
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const FLOAT_RANGE _InitRange,
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const TW_INT32 _nSupportedQueries = TWQC_ALL);
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virtual ~CTWAINContainerFix32Range();
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virtual TW_HANDLE GetContainer(const TW_UINT16 _unMsg);
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virtual TW_INT16 Set(pTW_CAPABILITY _pCap, TW_INT16 &Condition);
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virtual bool Reset();
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/**
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* Return the default value through _flVal if set.
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* @param[out] _flVal set the default value on return.
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* @return true if success.
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*/
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bool GetDefault(float &_flVal);
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/**
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* Return the current value through _flVal if set.
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* @param[out] _flVal set the current value on return.
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* @return true if success.
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*/
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bool GetCurrent(float &_flVal);
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/**
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* Set the current value through _flVal.
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* @param[in] _flVal the current value.
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* @return true if success.
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*/
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bool SetCurrent(float _flVal);
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void GetMinMaxStep(float &_flMinVal,float &_flMaxVal,float &_flStepVal);
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int IsInRange(FLOAT_RANGE _Range, float &_flVal);
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protected:
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/**
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* Check to see if type is valid.
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* @param[in] _unTWType type to check
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* @return true if valid
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*/
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bool isValidType(const TW_UINT16 _unTWType);
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FLOAT_RANGE m_Cur;
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FLOAT_RANGE m_Def;
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};
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#endif // __CTWAINContainerFix32RangeRANGE_H__
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