TGopTransparency Class Reference

class TGopTransparency

Specifies which pixels should be treated as transparent in a bitblt operation that supports transparency.

This is used by the TGopBitBltTransparent and TGopScaledBitBltTransparent graphics operations.

For the possible transparency types, see the TTransparencyType enumeration.

An object of this class is specified when constructing a TGopBitBltTransparent or TGopScaledBitBltTransparent.

TTransparencyType TGopBitBltTransparent TGopScaledBitBltTransparent

Constructor & Destructor Documentation

TGopTransparency(TTransparencyType)

TGopTransparency(TTransparencyTypeaType)[inline]

Constructor with a transparency type. iParam is initialised to zero.

Parameters

TTransparencyType aTypeThe transparency type.

TGopTransparency(TInt)

TGopTransparency(TIntaPixelValue)[inline]

Constructor with a pixel value. The type is initialised to ETransparentPixel. Any pixel that has a value equal to aPixelValue is treated as transparent. aPixelValue is the bit pattern of the pixel as stored in the bitmap.

Parameters

TInt aPixelValueThe pixel value.

TGopTransparency(TRgb)

TGopTransparency(TRgbaRgb)[inline]

Constructor with a TRgb value. The type is initialised to ETransparentColor. Any pixel that has a color of aRgb is treated as transparent.

Parameters

TRgb aRgbThe TRgb value.

Member Functions Documentation

Color()

TRgb Color()const [inline]

Gets the colour that is treated as transparent. This is the value of iParam as a TRgb.

Pixel()

TInt Pixel()const [inline]

Gets the value of the colour as a TInt that is treated as transparent. This is the value of iParam.

Member Data Documentation

TUint32 iParam

TUint32 iParam

Holds the value of the colour/pixel that is treated as transparent.

TTransparencyType iType

TTransparencyType iType

The transparency type.