TGulBorder Class Reference

#include <mw/gulbordr.h>

Link against: egul.lib

class TGulBorder

Nested Classes and Structures

TGulBorder::TColors

Public Member Enumerations
enum	T3DStyle { EFlat, ESunken, ERaised }
enum	TBorderType { ENone, ESingleGray, ESingleBlack, ESingleDotted, ..., EHorizontalBar }
enum	TConstructionStyle { EOneStep, ETwoStep, EThreeStep, EInvertedTwoStep }
enum	TInlineStyle { EWithInline }
enum	TLogicalFamily { EWindowFamily, EContainerFamily, EControlFamily }
enum	TLogicalType { EWindow, EFlatContainer, ERaisedContainer, ESunkenContainer, ..., EFocusedSunkenControl }
enum	TOutlineStyle { EWithOutline, EDottedOutline }
enum	TRounding { EAddOneRoundingPixel, EAddTwoRoundingPixels, EAddFourRoundingPixels }
enum	TThickness { EAddOnePixel, EAddTwoPixels, EAddFourPixels }

Public Member Functions
	TGulBorder()
	TGulBorder(TBorderType)
	TGulBorder(TBorderType, TGulAdjacent)
	TGulBorder(TInt)
	TGulBorder(TInt, TGulAdjacent)
IMPORT_C TInt	Adjacent()
IMPORT_C void	Draw(CGraphicsContext &, const TRect &, const TColors &)
IMPORT_C void	Draw(CGraphicsContext &, const TRect &)
IMPORT_C TBool	HasBorder()
IMPORT_C TRect	InnerRect(const TRect &)
IMPORT_C TMargins	Margins()
IMPORT_C TRect	OuterRect(const TRect &)
IMPORT_C TInt	Rounding()
IMPORT_C void	SetAdjacent(TInt)
IMPORT_C void	SetType(TInt)
IMPORT_C TSize	SizeDelta()
IMPORT_C TInt	Thickness()
IMPORT_C TInt	Type()

Detailed Description

Draws a border around a control.

The rectangular areas enclosed by borders are typically working areas of the graphics context so the class supplies a number of methods which describe how it occupies the area.

A distinction between descriptive and logical borders is made. For descriptive borders the appearance of the border is known and fixed. The type of border drawn is determined by flags which describe how it is to be constructed. These flags can be combined to achieve many different effects, and standard combinations have been supplied (see the TBorderType enumeration). For logical borders the use of the border is known and fixed but the appearance is not specified. The appearance and sizing functions must be supplied in custom written code.

Member Enumeration Documentation

Enum T3DStyle

Defines the 3D border style.

Enumerator	Value	Description
EFlat	0x10	A flat border.
ESunken	0x20	A 3D effect sunken border.
ERaised	0x40	A 3D effect raised border.

Enum TBorderType

Defines the descriptive border types.

Enumerator	Value	Description
ENone	ENoBorder	No border.
ESingleGray	EWithOutline\|EGray	Border is a 1 pixel wide grey outline.
ESingleBlack	EWithOutline\|EBlack	Border is a 1 pixel wide black outline.
ESingleDotted	EWithOutline\|EDottedOutline	Border is a 1 pixel wide dotted outline.
EShallowRaised	ERaised\|EOneStep\|EAddOnePixel	A 3D raised border, with 1 pixel thickness.
EShallowSunken	ESunken\|EOneStep\|EAddOnePixel	A 3D sunken border, with 1 pixel thickness.
EDeepRaised	EWithOutline\|ERaised\|EOneStep\|EAddTwoPixels	A 3D raised border, with outline, and 2 pixel thickness.
EDeepRaisedWithOutline	EWithOutline\|ERaised\|EOneStep\|EAddTwoPixels	The same as EDeepRaised.
EDeepSunken	EWithOutline\|ESunken\|EOneStep\|EAddTwoPixels	A 3D sunken border, with outline, and 2 pixel thickness.
EDeepSunkenWithOutline	EWithOutline\|ESunken\|EOneStep\|EAddTwoPixels	The same as EDeepSunken.
EThickDeepRaisedWithOutline	EWithOutline\|ERaised\|EOneStep\|EAddOnePixel\|EAddTwoPixels	A 3D raised border, with outline, and 3 pixel thickness.
EVerticalBar	ERaised\|EOneStep\|EAddTwoPixels\|EWithOverlap	A 3D raised border, with 2 pixels thickness and no outline on the left and right hand sides.
EHorizontalBar	ERaised\|EOneStep\|EAddTwoPixels\|EHorizontal\|EWithOverlap	A 3D raised border, with 2 pixels thickness and no outline on the top and bottom.

Enum TConstructionStyle

Defines the border's construction style.

Enumerator	Value	Description
EOneStep	0x100	One step border construction. This type of border is drawn using the mid light and mid dark colours on opposite sides of the border.
ETwoStep	0x200	Two step border construction. This type of border uses light and dark colours for the main border frame (or mid light for the flat border), and an additional half frame using mid light or mid dark colours.
EThreeStep	0x400	Three step border construction. This type of border is drawn with an outer frame, a repeating one pixel band in mid tones, and an inner frame.
EInvertedTwoStep	0x800	Inverted two step border construction. This is the same as ETwoStep except that for raised and sunken borders, the additional half frame is drawn on the opposite side to that used in ETwoStep.

Enum TInlineStyle

Defines whether or not the border has a single pixel interior border.

By default it does not.

Enumerator	Value	Description
EWithInline	0x04	The border has an interior border.

Enum TLogicalFamily

For logical borders, defines whether the border encloses a window, a container control or a control.

Enumerator	Value	Description
EWindowFamily	ELogical\|0x1	Logical border around a window.
EContainerFamily	ELogical\|0x2	Logical border around a container.
EControlFamily	ELogical\|0x3	Logical border around a control.

Enum TLogicalType

Defines the logical border types.

Enumerator	Value	Description
EWindow	EWindowFamily\|ERaised	Raised border around a window.
EFlatContainer	EContainerFamily\|EFlat	Flat border around a container.
ERaisedContainer	EContainerFamily\|ERaised	Raised border around a container.
ESunkenContainer	EContainerFamily\|ESunken	Sunken border around a container.
EFlatControl	EControlFamily\|EFlat	Flat border around a control.
ERaisedControl	EControlFamily\|ERaised	Raised border around a control.
ESunkenControl	EControlFamily\|ESunken	Sunken border around a control.
EFocusedRaisedControl	EControlFamily\|ERaised\|0x100	Raised border around a control with focus.
EFocusedSunkenControl	EControlFamily\|ESunken\|0x100	Sunken border around a control with focus.

Enum TOutlineStyle

Defines the border outline style.

Note that not all border types have an outline.

Enumerator	Value	Description
EWithOutline	0x01	The border has a single pixel outline, either solid (by default) or dotted.
EDottedOutline	0x02	The border outline is drawn using a dotted pen.

Enum TRounding

Defines the number of pixels that are removed to produce rounded corners.

Enumerator	Value	Description
EAddOneRoundingPixel	0x10000	Border rounded by removing one extra pixel.
EAddTwoRoundingPixels	0x20000	Border rounded by removing two extra pixels.
EAddFourRoundingPixels	0x40000	Border rounded by by removing four extra pixels.

Enum TThickness

Defines the number of pixels to add to the border thickness.

The border thickness is the central part of the border, coloured in the mid-tone highlights and lowlights.

For two step-constructed borders, the additional pixels are only added to either the top left or bottom right hand sides.

Enumerator	Value	Description
EAddOnePixel	0x1000	The border has one extra pixel.
EAddTwoPixels	0x2000	The border has two extra pixels.
EAddFourPixels	0x4000	The border has four extra pixels.

Constructor & Destructor Documentation

TGulBorder ( )

IMPORT_C

TGulBorder

(

)

Default constructor.

The border type is initialised to zero (i.e. no border).

TGulBorder ( TBorderType )

IMPORT_C

TGulBorder

(

TBorderType

aType

)

Constructor with a border type.

Parameters
aType	The border type.

TGulBorder ( TBorderType, TGulAdjacent )

IMPORT_C	TGulBorder	(	TBorderType	aType,
			TGulAdjacent	aAdjacent
		)

Constructor with a border type and an adjacency.

Parameters
aType	The border type.
aAdjacent	Border adjacency. No outline is drawn for border sides that are adjacent.

TGulBorder ( TInt )

IMPORT_C

TGulBorder

(

TInt

aType

)

Constructor with a border type, specified as a TInt.

Parameters
aType	The border type. Possible values are defined in the TBorderType enumeration.

TGulBorder ( TInt, TGulAdjacent )

IMPORT_C	TGulBorder	(	TInt	aType,
			TGulAdjacent	aAdjacent
		)

Constructor with a border type, specified as a TInt, and a border adjacency.

Parameters
aType	The border type.
aAdjacent	Border adjacency. No outline is drawn for border sides that are adjacent.

Member Function Documentation

Adjacent ( )

IMPORT_C TInt

Adjacent

(

)

const

Gets the border adjacency.

No outline is drawn for border sides that are adjacent.

Return Value: The border adjacency. For possible values, see the TGulAdjacent enum.

Draw ( CGraphicsContext &, const TRect &, const TColors & )

IMPORT_C void	Draw	(	CGraphicsContext &	aGc,
			const TRect &	aRect,
			const TColors &	aBorderColors
		)	const

Draws the border using a graphics context, inside a containing rectangle, and using the border colours specified.

This function does nothing if the border type is ENone. If the border is a logical border, drawing is delegated to its implementation of MGulLogicalBorder::Draw().

Parameters
aGc	The graphics context to draw through.
aRect	The containing rectangle. This defines the border's outline, i.e. the border is drawn inside this rectangle.
aBorderColors	The border colours.

Draw ( CGraphicsContext &, const TRect & )

IMPORT_C void	Draw	(	CGraphicsContext &	aGc,
			const TRect &	aRect
		)	const

Draws the border using a graphics context, inside a containing rectangle, and using default values for the border colours.

For details of the default border colours, see class TColors.

This function does nothing if the border type is ENone. If the border is a logical border, drawing is delegated to its implementation of MGulLogicalBorder::Draw().

Parameters
aGc	The graphics context to draw through.
aRect	The containing rectangle. This defines the border's outline, i.e. the border is drawn inside this rectangle.

HasBorder ( )

IMPORT_C TBool

HasBorder

(

)

const

Tests whether a border is present.

No border is present if its type is ENoBorder.

Return Value: True if a border is present, otherwise false.

InnerRect ( const TRect & )

IMPORT_C TRect

InnerRect

(

const TRect &

aOuterRect

)

const

Returns the rectangular area enclosed by the border.

Parameters
aOuterRect	The border's containing rectangle.

Return Value: The inner rectangle.

Margins ( )

IMPORT_C TMargins

Margins

(

)

const

Returns the border margins.

The border margins are four integers that represent the widths in pixels of the top, bottom, left and right hand sides of the border.

If the border is a logical border, then calculating the margins is delegated to its implementation of MGulLogicalBorder::Margins().

Otherwise, the margins are calculated by adding together the single pixel border outline, if present (this is zero for adjacent sides), the border thickness (containing the mid-tone highlights and lowlights), and the single pixel interior outline, if present.

Return Value: The border margins.

OuterRect ( const TRect & )

IMPORT_C TRect

OuterRect

(

const TRect &

aInnerRect

)

const

Returns the rectangular area required to accommodate the inner rectangle aInnerRect and the border.

Parameters
aInnerRect	The inner rectangular area.

Return Value: The enclosing rectangular area.

Rounding ( )

IMPORT_C TInt

Rounding

(

)

const

SetAdjacent ( TInt )

IMPORT_C void

SetAdjacent

(

TInt

aAdjacent

)

Sets the border adjacency.

No outline is drawn for border sides that are adjacent.

Parameters
aAdjacent	The border adjacency. For possible values, see the TGulAdjacent enum.

SetType ( TInt )

IMPORT_C void

SetType

(

TInt

aType

)

Sets the border type.

Descriptive borders use one of the values from the TBorderType enum. Logical borders use one of the TLogicalType values. Custom border types can be created by selecting one value from each of the enums T3DStyle and TConstructionStyle, one or more values from each of the enums TOutlineStyle and TInlineStyle, one or more values from the enums TThickness and TRounding and ORing all these values together.

Parameters
aType	The border type.

SizeDelta ( )

IMPORT_C TSize

SizeDelta

(

)

const

Returns the size difference between the inner and outer rectangles of the border.

Return Value: The size difference between the inner and outer rectangles.

Thickness ( )

IMPORT_C TInt

Thickness

(

)

const

Deprecated

Type ( )

IMPORT_C TInt

Type

(

)

const

Gets the border type.

Return Value: The border type. This is one of the values from the TBorderType (for descriptive borders) or TLogicalType (for logical borders) enums.