Resource class. More...

#include <ilviews/base/port.h>

Inheritance diagram for IlvGradientPattern:

Public Member Functions
	IlvGradientPattern (IlvDisplay display, IlvColor start, IlvColor end, IlvDim width, IlvDim height, IlvGradientGeometry geometry, IlvGradientSpread spread, const char *alias=0)
	Constructor. More...

	IlvGradientPattern (IlvDisplay display, IlvColorStop colorStops, IlUInt nColorStops, IlvDim width, IlvDim height, IlvGradientGeometry geometry, IlvGradientSpread spread, const char *alias=0)
	Constructor. More...

void	addColorStop (IlvColorStop *colorStop)
	Adds a color stop. More...

const char *	getAlias () const
	Gets the alias of the gradient pattern. More...

IlvColorStop *	getColorStop (IlUInt index) const
	Gets the color stop at the specified index. More...

IlUInt	getColorStopsCount () const
	Gets the number of color stops of this gradient. More...

IlvGradientGeometry *	getGeometry () const
	Gets the geometry of the gradient pattern. More...

IlvGradientSpread	getSpread () const
	Gets the type of spread of the gradient pattern. More...

IlBoolean	removeColorStop (IlvColorStop *colorStop)
	Removes a color stop. More...

void	setAlias (const char *alias)
	Sets the alias of the gradient pattern. More...

IlBoolean	setColorStopOffset (IlvColorStop *colorStop, IlFloat offset)
	Sets a color stop offset. More...

void	setGeometry (IlvGradientGeometry *geometry)
	Sets the geometry of the gradient pattern. More...

void	setHeight (IlvDim height)
	Sets the height of the gradient pattern. More...

void	setSpread (IlvGradientSpread spread)
	Sets the type of spread of the gradient pattern. More...

void	setWidth (IlvDim width)
	Sets the width of the gradient pattern. More...

Public Member Functions inherited from IlvPattern
	IlvPattern (IlvDisplay display, IlvDim width, IlvDim height, unsigned char data)
	Constructor. More...

	IlvPattern (IlvBitmap *bitmap)
	Constructor. More...

virtual IlUShort	depth () const
	Retrieves the depth (number of bits that define a pixel value) of this pattern. More...

unsigned char *	getBitmapData (IlUInt &size) const
	Retrieves the pixels of this pattern. More...

IlvDim	height () const
	Retrieves the height of this pattern. More...

void	putBitmapData (unsigned char *data, IlUInt size)
	Modifies the pixels of this pattern. More...

IlvDim	width () const
	Retrieves the width of this pattern. More...

Public Member Functions inherited from IlvResource
IlvDisplay *	getDisplay () const
	Gets the `IlvDisplay` instance. More...

const char *	getName () const
	Gets the resource name. More...

void	lock ()
	Locks the resource. More...

virtual void	setName (const char *name)
	Sets the name of the resource. More...

virtual void	unLock ()
	Unlocks the resource. More...

Friends
class	IlvDisplay

class	IlvGradientGeometry

Detailed Description

Resource class.

Library: display

Base class for gradient patterns. The IlvGradientPattern class supports linear and radial gradients. The IlvGradientPattern class is a subclass of IlvPattern. The IlvPalette class allows you to get and set the gradient pattern attribute using the following methods:

A dedicated fill style value exists for gradient patterns: IlvFillGradientPattern. If you want to use your palette to draw gradients, set an instance of IlvGradientPattern on the palette, and set the palette fill style to IlvFillGradientPattern. Gradients can only be drawn if your application is properly set to use GDI+ or Cairo for rendering. The IlvGradientPattern class has the following attributes:

A gradient geometry which defines the type of gradient desired and its parameters. The gradient geometry classes are: IlvLinearGradientGeometry and IlvRadialGradientGeometry which both derive from the IlvGradientGeometry class.
Width and height
The type of spread which indicates how the gradient should be drawn outside of its boundaries.
The color stops which are used to render the gradient. A color stop is defined by an IlvColor instance, an alpha value which defines the transparency to apply on this color, and an offset value between 0 and 1 which defines the position where the color should be used along the gradient. You must set at least 2 color stops on the gradient. See class IlvColorStop for details.
An alias which is an optional attribute allowing you to control how the display will share the gradient pattern instance with the different palettes.

For more details, read the user manual section related to gradients.

See Also: IlvGradientGeometry, IlvLinearGradientGeometry, IlvRadialGradientGeometry, IlvColorStop.

Constructor & Destructor Documentation

IlvGradientPattern::IlvGradientPattern	(	IlvDisplay *	display,
		IlvColor *	start,
		IlvColor *	end,
		IlvDim	width,
		IlvDim	height,
		IlvGradientGeometry *	geometry,
		IlvGradientSpread	spread,
		const char *	alias = `0`
	)

Constructor.

This constructor initializes a new IlvGradientPattern with two colors.

Parameters

display	The display instance.
start	The start color.
end	The end color.
width	The width of the gradient pattern.
height	The height of the gradient pattern.
geometry	The geometry of the gradient (radial or linear).
spread	The type of spread.
alias	The alias of the gradient pattern.

See Also: IlvLinearGradientGeometry, IlvRadialGradientGeometry.

IlvGradientPattern::IlvGradientPattern	(	IlvDisplay *	display,
		IlvColorStop **	colorStops,
		IlUInt	nColorStops,
		IlvDim	width,
		IlvDim	height,
		IlvGradientGeometry *	geometry,
		IlvGradientSpread	spread,
		const char *	alias = `0`
	)

Constructor.

This constructor initializes a new IlvGradientPattern with several color stops. At least two color stops must be defined.

Parameters

display	The display instance.
colorStops	An array of color stops
nColorStops	The number of color stops.
width	The width of the gradient pattern.
height	The height of the gradient pattern.
geometry	The geometry of the gradient (radial or linear).
spread	The type of spread.
alias	The alias of the gradient pattern.

Member Function Documentation

void IlvGradientPattern::addColorStop ( IlvColorStop * colorStop )

Adds a color stop.

Parameters

colorStop The color stop to add.

See Also: IlvColorStop.

const char* IlvGradientPattern::getAlias ( ) const

Gets the alias of the gradient pattern.

Returns: The alias of the gradient pattern.

IlvColorStop* IlvGradientPattern::getColorStop ( IlUInt index ) const

Gets the color stop at the specified index.

Parameters

index The index of the color stop to retrieve.

Returns: The color stop at the specified index.

IlUInt IlvGradientPattern::getColorStopsCount ( ) const

Gets the number of color stops of this gradient.

Returns: The number of color stops of this gradient.

IlvGradientGeometry* IlvGradientPattern::getGeometry ( ) const

Gets the geometry of the gradient pattern.

Returns: The geometry of the gradient pattern.

See Also: IlvLinearGradientGeometry, IlvRadialGradientGeometry.

IlvGradientSpread IlvGradientPattern::getSpread ( ) const

Gets the type of spread of the gradient pattern.

Returns: The type of spread of the gradient pattern.

IlBoolean IlvGradientPattern::removeColorStop ( IlvColorStop * colorStop )

Removes a color stop.

Parameters

colorStop The color stop to remove.

Returns: A Boolean value indicating whether the specified color stop has been found and removed.

void IlvGradientPattern::setAlias ( const char * alias )

Sets the alias of the gradient pattern.

Parameters

alias The new alias of the gradient pattern.

IlBoolean IlvGradientPattern::setColorStopOffset	(	IlvColorStop *	colorStop,
		IlFloat	offset
	)

Sets a color stop offset.

Parameters

colorStop	The color stop to set the offset on.
offset	The offset to set on the color stop.

Returns: A Boolean value indicating whether the specified color stop has been found and the new offset properly set.

void IlvGradientPattern::setGeometry ( IlvGradientGeometry * geometry )

Sets the geometry of the gradient pattern.

Parameters

geometry The new geometry of the gradient pattern.

See Also: IlvLinearGradientGeometry, IlvRadialGradientGeometry.

void IlvGradientPattern::setHeight ( IlvDim height )

Sets the height of the gradient pattern.

Parameters

height The new height of the gradient pattern.

See Also: IlvPattern::height()

void IlvGradientPattern::setSpread ( IlvGradientSpread spread )

Sets the type of spread of the gradient pattern.

Parameters

spread The new type of spread of the gradient pattern.

void IlvGradientPattern::setWidth ( IlvDim width )

Sets the width of the gradient pattern.

Parameters

width The new width of the gradient pattern.

See Also: IlvPattern::width()

Rogue Wave ViewsFoundation Package API Reference Guide

Public Member Functions

Friends

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Rogue Wave Views
Foundation Package API Reference Guide