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Alf::AlfFlowLayoutPreferencesImpl Class Reference

class Alf::AlfFlowLayoutPreferencesImpl : public Alf::IAlfLayoutPreferences

layout preferences implementation for flowlayoutmanager.

alfwidgetmodel.lib

Since: S60 ?S60_version

Inherits from

Alf::AlfFlowLayoutPreferencesImpl
- Alf::IAlfLayoutPreferences
  - Alf::IAlfInterfaceBase

Public Member Functions
	AlfFlowLayoutPreferencesImpl(AlfFlowLayoutManager &)
bool	getMaximumSize(TAlfXYMetric &)
bool	getMinimumSize(TAlfXYMetric &)
bool	getPreferredSize(TAlfXYMetric &)
IAlfInterfaceBase *	makeInterface(const IfId &)
void	setPreferredSize(const TAlfXYMetric &)

Protected Member Functions
bool	calculateChildSizes(TAlfXYMetric &, enum IAlfFlowLayoutPolicy::flowDirection, enum sizeType)
const IAlfFlowLayoutPolicy &	flowLayoutPolicy()
bool	getSize(CAlfWidgetControl *, TAlfXYMetric &, enum sizeType)
TAlfRealSize	sizeInPixels(const TAlfXYMetric &)

Inherited Functions
	Alf::IAlfInterfaceBase::makeInterface(IAlfInterfaceBase *)
	Alf::IAlfInterfaceBase::~IAlfInterfaceBase()
	Alf::IAlfLayoutPreferences::type()

Protected Member Enumerations
enum	sizeType { ESizePreferred, ESizeMin, ESizeMax }

Private Attributes
AlfFlowLayoutManager &	mFlowLayoutManager
TAlfXYMetric	mPreferredSize

Constructor & Destructor Documentation

AlfFlowLayoutPreferencesImpl(AlfFlowLayoutManager &)

AlfFlowLayoutPreferencesImpl

(

AlfFlowLayoutManager &

aFlowLayoutManager

)

Parameters

AlfFlowLayoutManager & aFlowLayoutManager

Member Functions Documentation

calculateChildSizes(TAlfXYMetric &, enum IAlfFlowLayoutPolicy::flowDirection, enum sizeType)

bool	calculateChildSizes	(	TAlfXYMetric &	aSize,
			enum IAlfFlowLayoutPolicy::flowDirection	aFlowDirection,
			enum sizeType	aSizeType
		)	const [protected]

calculate the min-, preferred-, or max- sizes from the children.

Parameters

TAlfXYMetric & aSize	on return, contains the calculated size.
enum IAlfFlowLayoutPolicy::flowDirection aFlowDirection	direction of flow.
enum sizeType aSizeType	specifies, whether the min-, preferred- or max-size of the IAlfLayoutPreferences is used for calculation.

flowLayoutPolicy()

const IAlfFlowLayoutPolicy &

flowLayoutPolicy

(

)

const [protected]

getMaximumSize(TAlfXYMetric &)

bool

getMaximumSize

(

TAlfXYMetric &

aMaxSize

)

const [virtual]

Returns the maximum size of the layout by combining the maximum sizes of the layed out visuals.

Parameters

TAlfXYMetric & aMaxSize

The maximum size that the object would like to be laid out to

getMinimumSize(TAlfXYMetric &)

bool

getMinimumSize

(

TAlfXYMetric &

aMinSize

)

const [virtual]

Returns the minimum size of the layout by combining the minimum sizes of the layed out visuals.

Parameters

TAlfXYMetric & aMinSize

The minimum size that the object would like to be laid out to

getPreferredSize(TAlfXYMetric &)

bool

getPreferredSize

(

TAlfXYMetric &

aPreferredSize

)

const [virtual]

Returns the size combined by all preferred sizes of child UI elements in this layout when they are being layed out according to the layout manager rules.

Parameters

TAlfXYMetric & aPreferredSize

Filled with the referred area occupied by child elements when layed out by layouting rules in this layout manager.

getSize(CAlfWidgetControl *, TAlfXYMetric &, enum sizeType)

bool	getSize	(	CAlfWidgetControl *	aControl,
			TAlfXYMetric &	aSize,
			enum sizeType	aSizeType
		)	const [protected]

fetches the size from the IAlfLayoutPreferences-interface of the aControl.

Parameters

CAlfWidgetControl * aControl	control, which preferences-interface to query.
TAlfXYMetric & aSize	on return, contains the size.
enum sizeType aSizeType	specifies, whether the min-, preferred- or max-size of the IAlfLayoutPreferences is returned.

makeInterface(const IfId &)

IAlfInterfaceBase *

makeInterface

(

const IfId &

aType

)

[virtual]

Interface getter. IAlfInterfaceBase::makeInterface

Since: S60 ?S60_version

Parameters

const IfId & aType

The type id of the queried interface.

setPreferredSize(const TAlfXYMetric &)

void

setPreferredSize

(

const TAlfXYMetric &

aPreferredSize

)

[virtual]

Set the preferred size into a presentation object.

This is not supported on the layout manager. Users should set preferred sizes of the contained UI elements.

Parameters

const TAlfXYMetric & aPreferredSize

sizeInPixels(const TAlfXYMetric &)

TAlfRealSize

sizeInPixels

(

const TAlfXYMetric &

aSize

)

[protected, static]

converts size in metrics to size in pixels. Implementation missing.

Parameters

const TAlfXYMetric & aSize

size to convert

Member Enumerations Documentation

Enum sizeType

size type to calculate calculateChildSizes

Enumerators

ESizePreferred
ESizeMin
ESizeMax

Member Data Documentation

AlfFlowLayoutManager & mFlowLayoutManager

AlfFlowLayoutManager &

mFlowLayoutManager

[private]

TAlfXYMetric mPreferredSize

TAlfXYMetric

mPreferredSize

[private]