A class to provide access to component lists. More...

#include <mvIMPACT_acquire.h>

Inheritance diagram for ComponentList:

Public Member Functions
unsigned int	changedCounter (void) const
	Returns the current changed counter for the component referenced by this object.

unsigned int	changedCounterAttr (void) const
	Returns the current attribute changed counter for the component referenced by this object.

	ComponentList ()
	Constructs a new unbound mvIMPACT::acquire::ComponentList object.

	ComponentList (const ComponentList &src)
	Constructs a new mvIMPACT::acquire::ComponentList from an existing one.

	ComponentList (HLIST hList)
	Constructs a new mvIMPACT::acquire::ComponentList object.

std::string	contentDescriptor (void) const
	Returns a string containing information about what's in this list.

std::string	displayName (void) const
	Returns the display name of the component referenced by this object.

std::string	docString (void) const
	Returns a string containing general information about the component referenced by this object.

Component	firstChild (void) const
	Moves to the first child of this component(moves down one level).

Component	firstSibling (void) const
	Moves to the first sibling(the first feature in the current list of features).

TComponentFlag	flags (void) const
	Returns the flags associated with this component.

std::string	flagsAsString (const std::string &separator=" \| ") const
	Returns the flags associated with this component as a string.

HOBJ	hObj (void) const
	Returns a unique identifier for the component referenced by this object.

bool	isDefault (void) const
	Checks if this component is currently referencing the default for this component.

bool	isList (void) const
	Checks if this component is of type mvIMPACT::acquire::ComponentList.

bool	isMeth (void) const
	Checks if this component is of type mvIMPACT::acquire::Method.

bool	isProp (void) const
	Checks if this component is of type mvIMPACT::acquire::Property or a derived type.

bool	isValid (void) const
	Checks if the internal component referenced by this object is still valid.

bool	isVisible (void) const
	Checks if the component is currently shadowed due to a settings made elsewhere or not.

bool	isWriteable (void) const
	Checks if the caller has write/modify access to the component.

Component	lastSibling (void) const
	Moves to the last sibling(the last feature in the current list of features).

std::string	name (void) const
	Returns the name of the component referenced by this object.

Component	nextSibling (void)
	Moves to the next sibling(the next feature in the current list of features).

	operator HOBJ () const
	Allows implicit conversion to a HOBJ.

Component	operator++ (int)
	Moves to the next sibling(the next feature in the current list of features).

Component &	operator++ (void)
	Moves to the next sibling(the next feature in the current list of features).

ComponentList &	operator= (const ComponentList &rhs)
	Allows assignments of mvIMPACT::acquire::ComponentList objects.

Component	parent (void) const
	Moves to the parent of this component(moves up one level).

TComponentRepresentation	representation (void) const
	Returns the recommended representation for this component.

std::string	representationAsString (void) const
	Returns the recommended representation of the referenced component as a string.

const Component &	restoreDefault (void) const
	Restores the default for the referenced component.

Component	selectedFeature (unsigned int index) const
	Retrieves a component that is selected by the current one.

unsigned int	selectedFeatureCount (void) const
	Returns the number of features selected by the current one.

unsigned int	selectedFeatures (std::vector< Component > &v) const
	Retrieves the list of components that are selected by the current one.

Component	selectingFeature (unsigned int index) const
	Retrieves a component that is selecting the current one.

unsigned int	selectingFeatureCount (void) const
	Returns the number of features selecting the current one.

unsigned int	selectingFeatures (std::vector< Component > &v) const
	Retrieves the list of components that are selecting the current one.

unsigned int	size (void) const
	Returns The number of valid component entries in the referenced list.

TComponentType	type (void) const
	Returns the type of the referenced component.

std::string	typeAsString (void) const
	Returns the type of the referenced component as a string.

TComponentVisibility	visibility (void) const
	Returns the recommended visibility for this component.

std::string	visibilityAsString (void) const
	Returns the recommended visibility of the referenced component as a string.

Static Public Member Functions
static std::string	representationAsString (TComponentRepresentation representation)
	Returns the recommended representation converted to a string.

static TComponentType	type (HOBJ hObj)
	Returns the type of the component referenced by hObj.

static std::string	visibilityAsString (TComponentVisibility visibility)
	Returns the recommended visibility converted to a string.

Protected Types
enum	{ BUFFER_INCREMENT_FACTOR = 6 }
	An internal constant that defines by which factor dynamic buffers will grow when the current size is not sufficient. More...

Protected Member Functions
std::string	compGetStringParam (TOBJ_StringQuery query, int param1=0, int param2=0) const
	A helper function to query certain component related string parameters.

Static Protected Member Functions
static char *	stringAllocator (const char *pBuf, size_t reqBufSize)
	An internal helper function for fast string allocation.

Protected Attributes
HOBJ	m_hObj
	A unique identifier for the internal driver object referenced by this instance of mvIMPACT::acquire::ComponentAccess.

Detailed Description

A class to provide access to component lists.

This class provides access to internal component lists of the driver.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

protectedinherited

An internal constant that defines by which factor dynamic buffers will grow when the current size is not sufficient.

Enumerator
BUFFER_INCREMENT_FACTOR

Constructor & Destructor Documentation

◆ ComponentList() [1/3]

ComponentList ( HLIST hList )

inlineexplicit

Constructs a new mvIMPACT::acquire::ComponentList object.

Parameters

[in] hList A valid handle to a list object

◆ ComponentList() [2/3]

ComponentList ( )

inlineexplicit

Constructs a new unbound mvIMPACT::acquire::ComponentList object.

◆ ComponentList() [3/3]

ComponentList ( const ComponentList & src )

inline

Constructs a new mvIMPACT::acquire::ComponentList from an existing one.

Parameters

[in] src A constant reference to the mvIMPACT::acquire::ComponentList object, this object shall be created from

Member Function Documentation

◆ changedCounter()

unsigned int changedCounter ( void ) const

inlineinherited

Returns the current changed counter for the component referenced by this object.

This changed counter is incremented internally each time the component is modified. To check if this component has been modified since the last time, this check has been performed, keep track of the last return value of this function and compare it with the new value. This can be helpful e.g. to keep a GUI up to date. The value returned by this function will always be larger than or equal to the value returned by mvIMPACT::acquire::ComponentAccess::changedCounterAttr (except in case of a wrap around) when called at the same time for the same object as it's always incremented when the component has been modified in any way while the latter one will only be incremented if the attributes (e.g. the flags) but NOT if e.g. the value(s) of a property has been modified.

//-----------------------------------------------------------------------------
struct ComponentRef
//-----------------------------------------------------------------------------
{
  mvIMPACT::acquire::Component c_;
  unsigned int lastChangedCount_;
  ComponentRef( mvIMPACT::acquire::Component c ) : c_( c ), lastChangedCount_( 0 ) {}
};
 
//-----------------------------------------------------------------------------
void fn( ComponentRef& cr )
//-----------------------------------------------------------------------------
{
  if( cr.c_.isValid() )
  {
    const unsigned int currentChangedCount = cr.c_.changedCounter();
    if( currentChangedCount != cr.lastChangedCount_ )
    {
      // something has happened since the last check!
      doWhatNeedsToBeDone();
      // and remember the current changed counter
      cr.lastChangedCount_ = currentChangedCount;
    }
  }
}

Returns: The current changed counter of this object.

◆ changedCounterAttr()

unsigned int changedCounterAttr ( void ) const

inlineinherited

Returns the current attribute changed counter for the component referenced by this object.

This changed counter is incremented internally each time the components attributes have been modified. To check if this components attributes have been modified since the last time, this check has been performed, keep track of the last return value of this function and compare it with the new value. This can be helpful e.g. to keep a GUI up to date.

Note: Attributes changes are e.g. a modification to a property's translation dictionary, but NOT a property's value. Because of this the value returned by this function will always be less or equal than the value returned by the function mvIMPACT::acquire::ComponentAccess::changedCounter (except in case of a wrap around) when called at the same time for the same object.

See also: mvIMPACT::acquire::ComponentAccess::changedCounter

Returns: The current attributes changed counter of this object.

◆ compGetStringParam()

std::string compGetStringParam	(	TOBJ_StringQuery	query,
		int	param1 = 0,
		int	param2 = 0 ) const

inlineprotectedinherited

A helper function to query certain component related string parameters.

This function might throw an exception, if an invalid parameter has been queried.

Returns: A string containing the data to be queried.

Parameters

	query	The type of the parameter to read
[in]	param1	An additional parameter
[in]	param2	An additional parameter

◆ contentDescriptor()

std::string contentDescriptor ( void ) const

inline

Returns a string containing information about what's in this list.

This string might not be defined by every list but in any case this function will return a valid string. However this string might be empty.

◆ displayName()

std::string displayName ( void ) const

inlineinherited

Returns the display name of the component referenced by this object.

Since: 1.11.20

Returns: The display name of the component referenced by this object. This might be an empty string if no display name has been specified.

Examples: GenICamSequencerParameterChangeAtRuntime.cpp, GenICamSequencerUsage.cpp, GenICamSequencerUsage.legacy.cpp, GenICamSequencerUsageWithPaths.cpp, GenICamSequencerUsageWithPaths.legacy.cpp, and exampleHelper.h.

◆ docString()

std::string docString ( void ) const

inlineinherited

Returns a string containing general information about the component referenced by this object.

Returns: A string containing general information about the component referenced by this object.

Examples: exampleHelper.h.

◆ firstChild()

Component firstChild ( void ) const

inlineinherited

Moves to the first child of this component(moves down one level).

Calling this function will only succeed, if the current mvIMPACT::acquire::Component references a list.

Returns: A new mvIMPACT::acquire::Component object

Examples: GenericInterfaceLayout.cpp, GenericInterfaceLayout.legacy.cpp, Properties.cpp, and Properties.legacy.cpp.

◆ firstSibling()

Component firstSibling ( void ) const

inlineinherited

Moves to the first sibling(the first feature in the current list of features).

Returns: A new mvIMPACT::acquire::Component object

◆ flags()

TComponentFlag flags ( void ) const

inlineinherited

Returns the flags associated with this component.

Returns: The flags associated with this component.

◆ flagsAsString()

std::string flagsAsString ( const std::string & separator = " | " ) const

inlineinherited

Returns the flags associated with this component as a string.

Returns: The flags associated with this component as a string.

Parameters

[in] separator A user definable string to separate the individual flags. The default value is ' | ' resulting in the string to look e.g. like this: 'cfWriteAccess | cfReadAccess'

Examples: exampleHelper.h.

◆ hObj()

HOBJ hObj ( void ) const

inlineinherited

Returns a unique identifier for the component referenced by this object.

Returns: A unique identifier for the component referenced by this object.

◆ isDefault()

bool isDefault ( void ) const

inlineinherited

Checks if this component is currently referencing the default for this component.

This function will return true only for derived components that have not been modified.

Returns

true if the component is currently set to its default value
false otherwise.

◆ isList()

bool isList ( void ) const

inlineinherited

Checks if this component is of type mvIMPACT::acquire::ComponentList.

Returns

true if the component references a list
false otherwise

Examples: GenericInterfaceLayout.cpp, GenericInterfaceLayout.legacy.cpp, Properties.cpp, and Properties.legacy.cpp.

◆ isMeth()

bool isMeth ( void ) const

inlineinherited

Checks if this component is of type mvIMPACT::acquire::Method.

Returns

true if the component references a method
false otherwise

◆ isProp()

bool isProp ( void ) const

inlineinherited

Checks if this component is of type mvIMPACT::acquire::Property or a derived type.

Returns

true if the component references a property
false otherwise

Examples: GenICamCallbackOnEvent.cpp, GenericInterfaceLayout.cpp, GenericInterfaceLayout.legacy.cpp, Properties.cpp, and Properties.legacy.cpp.

◆ isValid()

bool isValid ( void ) const

inlineinherited

Checks if the internal component referenced by this object is still valid.

This function can be used to verify whether a referenced component is still valid or not. When e.g. referencing a driver property after mvIMPACT::acquire::Device::close has been called this function would return false. Calling any other function that tries to access the referenced component in that case would raise an exception.

Returns

true if this object currently references a valid component
false otherwise.

◆ isVisible()

bool isVisible ( void ) const

inlineinherited

Checks if the component is currently shadowed due to a settings made elsewhere or not.

Settings applied to certain components might affect the behaviour of others. For example an activated automatic gain control might shadow the value written to the gain property by the user as the gain is calculated internally. In order to check if modifying the actual component will affect the behaviour of the system this function may be used. When it returns true, the mvIMPACT::acquire::Component will have an impact on the system, if false is returned, the feature might be modified, but this will currently NOT influence the acquisition process or the overall behaviour of the device or driver.

This is what is called visibility. The user still might modify or read the current mvIMPACT::acquire::Component when it's not visible however the actual data will be used only if the Component is visible (mvIMPACT::acquire::cfInvisible must NOT be set).

The visibility of a mvIMPACT::acquire::Component object will change only if other mvIMPACT::acquire::Component objects are modified and NEVER when a program runs but does not change any mvIMPACT::acquire::Component.

◆ isWriteable()

bool isWriteable ( void ) const

inlineinherited

Checks if the caller has write/modify access to the component.

Returns

true if the caller is allowed to call write/modify operation for this component.
false otherwise.

Examples: exampleHelper.h.

◆ lastSibling()

Component lastSibling ( void ) const

inlineinherited

Moves to the last sibling(the last feature in the current list of features).

Since: 1.10.64

Returns: A new mvIMPACT::acquire::Component object

◆ name()

std::string name ( void ) const

inlineinherited

Returns the name of the component referenced by this object.

Returns: The name of the component referenced by this object.

◆ nextSibling()

Component nextSibling ( void )

inlineinherited

Moves to the next sibling(the next feature in the current list of features).

Returns: A new mvIMPACT::acquire::Component object

◆ operator HOBJ()

operator HOBJ ( ) const

inlineinherited

Allows implicit conversion to a HOBJ.

◆ operator++() [1/2]

Component operator++ ( int )

inlineinherited

Moves to the next sibling(the next feature in the current list of features).

Returns: A new mvIMPACT::acquire::Component object

◆ operator++() [2/2]

Component & operator++ ( void )

inlineinherited

Moves to the next sibling(the next feature in the current list of features).

Returns: A self reference

◆ operator=()

ComponentList & operator= ( const ComponentList & rhs )

inline

Allows assignments of mvIMPACT::acquire::ComponentList objects.

◆ parent()

Component parent ( void ) const

inlineinherited

Moves to the parent of this component(moves up one level).

Returns: A new mvIMPACT::acquire::Component object

◆ representation()

TComponentRepresentation representation ( void ) const

inlineinherited

Returns the recommended representation for this component.

The representation can be used e.g. to develop a GUI that creates convenient controls for certain features.

Valid values for this property are defined by the enumeration mvIMPACT::acquire::TComponentRepresentation.

Since: 2.14.0

Returns: The recommended representation for this component.

◆ representationAsString() [1/2]

static std::string representationAsString ( TComponentRepresentation representation )

inlinestaticinherited

Returns the recommended representation converted to a string.

Since: 2.14.0

Returns: The recommended representation converted to a string.

Parameters

[in] representation The representation to query the string representation for

◆ representationAsString() [2/2]

std::string representationAsString ( void ) const

inlineinherited

Returns the recommended representation of the referenced component as a string.

Since: 2.14.0

Returns: The recommended representation of the referenced component as a string.

◆ restoreDefault()

const Component & restoreDefault ( void ) const

inlineinherited

Restores the default for the referenced component.

Calling this function will restore the default value for the component referenced by this object.

If this function is called for an object of type mvIMPACT::acquire::ComponentList every component in that list is restored to the default value.

Note: The caller must have the right to modify the component. Otherwise an exception will be thrown.

Returns: A const reference to the component.

◆ selectedFeature()

Component selectedFeature ( unsigned int index ) const

inlineinherited

Retrieves a component that is selected by the current one.

This function retrieves a component that is selected by the current one. This information is mainly useful for GUI applications that want to arrange features in a way that dependencies between features can easily been spotted.

When a component 'selects' other components, this indicates that selected components may change whenever the selecting component changes. An example for a selector might be a property defining the index within a LUT while the value of a particular LUT entry could be a selected feature. Assuming 2 properties LUTIndex and LUTValue then changing LUTIndex will invalidate and possibly change LUTValue.

C++ offers the more efficient function mvIMPACT::acquire::Component::selectedFeatures to obtain this information.

To find out how many mvIMPACT::acquire::Component objects are selected by the current one call mvIMPACT::acquire::Component::selectedFeatureCount. This value minus 1 will also be the max. value for index.

See also: mvIMPACT::acquire::Component::selectedFeatureCount,
mvIMPACT::acquire::Component::selectedFeatures

Since: 1.11.20

Returns: A mvIMPACT::acquire::Component that is selected by the current one.

Parameters

[in] index The index for the component to query.

◆ selectedFeatureCount()

unsigned int selectedFeatureCount ( void ) const

inlineinherited

Returns the number of features selected by the current one.

See also: mvIMPACT::acquire::Component::selectedFeatures,
mvIMPACT::acquire::Component::selectedFeature

Since: 1.11.20

Returns: The number of features selected by the current one.

Examples: exampleHelper.h.

◆ selectedFeatures()

unsigned int selectedFeatures ( std::vector< Component > & v ) const

inlineinherited

Retrieves the list of components that are selected by the current one.

This function retrieves the list of components that are selected by the current one. This information is mainly useful for GUI applications that want to arrange features in a way that dependencies between features can easily been spotted.

When a component 'selects' other components, this indicates that selected components may change whenever the selecting component changes. An example for a selector might be a property defining the index within a LUT while the value of a particular LUT entry could be a selected feature. Assuming 2 properties LUTIndex and LUTValue then changing LUTIndex will invalidate and possibly change LUTValue.

See also: mvIMPACT::acquire::Component::selectedFeatureCount,
mvIMPACT::acquire::Component::selectedFeature

Since: 1.11.20

Returns: The number of features selected by the current one.

Parameters

[out] v An array that will retrieve the list of components that are selected by the current one.

Examples: exampleHelper.h.

◆ selectingFeature()

Component selectingFeature ( unsigned int index ) const

inlineinherited

Retrieves a component that is selecting the current one.

This function retrieves a component that is selecting the current one. This information is mainly useful for GUI applications that want to arrange features in a way that dependencies between features can easily been spotted.

When a component 'selects' other components, this indicates that selected components may change whenever the selecting component changes. An example for a selector might be a property defining the index within a LUT while the value of a particular LUT entry could be a selected feature. Assuming 2 properties LUTIndex and LUTValue then changing LUTIndex will invalidate and possibly change LUTValue.

C++ offers the more efficient function mvIMPACT::acquire::Component::selectingFeatures to obtain this information.

To find out how many mvIMPACT::acquire::Component objects are selecting the current one call mvIMPACT::acquire::Component::selectingFeatureCount. This value minus 1 will also be the max. value for index.

See also: mvIMPACT::acquire::Component::selectingFeatureCount,
mvIMPACT::acquire::Component::selectingFeatures

Since: 1.11.20

Returns: A mvIMPACT::acquire::Component that is selecting the current one.

Parameters

[in] index The index for the component to query.

◆ selectingFeatureCount()

unsigned int selectingFeatureCount ( void ) const

inlineinherited

Returns the number of features selecting the current one.

See also: mvIMPACT::acquire::Component::selectingFeatures,
mvIMPACT::acquire::Component::selectingFeature

Since: 1.11.20

Returns: The number of features selecting the current one.

Examples: exampleHelper.h.

◆ selectingFeatures()

unsigned int selectingFeatures ( std::vector< Component > & v ) const

inlineinherited

Retrieves the list of components that are selecting the current one.

This function retrieves the list of components that are selecting the current one. This information is mainly useful for GUI applications that want to arrange features in a way that dependencies between features can easily been spotted.

When a component 'selects' other components, this indicates that selected components may change whenever the selecting component changes. An example for a selector might be a property defining the index within a LUT while the value of a particular LUT entry could be a selected feature. Assuming 2 properties LUTIndex and LUTValue then changing LUTIndex will invalidate and possibly change LUTValue.

See also: mvIMPACT::acquire::Component::selectingFeatureCount,
mvIMPACT::acquire::Component::selectingFeature

Since: 1.11.20

Returns: The number of features selecting the current one.

Parameters

[out] v An array that will retrieve the list of components that are selecting the current one.

Examples: exampleHelper.h.

◆ size()

unsigned int size ( void ) const

inline

Returns The number of valid component entries in the referenced list.

Returns: The number of valid component entries in the referenced list.

◆ stringAllocator()

static char * stringAllocator	(	const char *	pBuf,
		size_t	reqBufSize )

inlinestaticprotectedinherited

An internal helper function for fast string allocation.

◆ type() [1/2]

static TComponentType type ( HOBJ hObj )

inlinestaticinherited

Returns the type of the component referenced by hObj.

Returns: The type of the component referenced by hObj.

Parameters

[in] hObj The component the type shall be retrieved for

◆ type() [2/2]

TComponentType type ( void ) const

inlineinherited

Returns the type of the referenced component.

Returns: The type of the referenced component.

Examples: exampleHelper.h.

◆ typeAsString()

std::string typeAsString ( void ) const

inlineinherited

Returns the type of the referenced component as a string.

Returns: The type of the referenced component as a string.

Examples: exampleHelper.h.

◆ visibility()

TComponentVisibility visibility ( void ) const

inlineinherited

Returns the recommended visibility for this component.

The visibility can be used e.g. to develop a GUI that displays a crucial subset of features only.

Valid values for this property are defined by the enumeration mvIMPACT::acquire::TComponentVisibility.

Returns: The recommended visibility for this component.

◆ visibilityAsString() [1/2]

static std::string visibilityAsString ( TComponentVisibility visibility )

inlinestaticinherited

Returns the recommended visibility converted to a string.

Returns: The recommended visibility converted to a string.

Parameters

[in] visibility The visibility to query the string representation for

◆ visibilityAsString() [2/2]

std::string visibilityAsString ( void ) const

inlineinherited

Returns the recommended visibility of the referenced component as a string.

Returns: The recommended visibility of the referenced component as a string.

Member Data Documentation

◆ m_hObj

HOBJ m_hObj

protectedinherited

A unique identifier for the internal driver object referenced by this instance of mvIMPACT::acquire::ComponentAccess.

Public Member Functions

Static Public Member Functions

Protected Types

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Detailed Description

Member Enumeration Documentation

◆ anonymous enum

Constructor & Destructor Documentation

◆ ComponentList() [1/3]

◆ ComponentList() [2/3]

◆ ComponentList() [3/3]

Member Function Documentation

◆ changedCounter()

◆ changedCounterAttr()

◆ compGetStringParam()

◆ contentDescriptor()

◆ displayName()

◆ docString()

◆ firstChild()

◆ firstSibling()

◆ flags()

◆ flagsAsString()

◆ hObj()

◆ isDefault()

◆ isList()

◆ isMeth()

◆ isProp()

◆ isValid()

◆ isVisible()

◆ isWriteable()

◆ lastSibling()

◆ name()

◆ nextSibling()

◆ operator HOBJ()

◆ operator++() [1/2]

◆ operator++() [2/2]

◆ operator=()

◆ parent()

◆ representation()

◆ representationAsString() [1/2]

◆ representationAsString() [2/2]

◆ restoreDefault()

◆ selectedFeature()

◆ selectedFeatureCount()

◆ selectedFeatures()

◆ selectingFeature()

◆ selectingFeatureCount()

◆ selectingFeatures()

◆ size()

◆ stringAllocator()

◆ type() [1/2]

◆ type() [2/2]

◆ typeAsString()

◆ visibility()

◆ visibilityAsString() [1/2]

◆ visibilityAsString() [2/2]

Member Data Documentation

◆ m_hObj