TRawImage object

An uncompressed graphics image (bitmap).

Declaration

pascal

TRawImage = class

This object hold the pixels, mask and color palette of the image, as well as a detailed description of the storage format of these parts.

This object currently is subject to refactoring, don't use it in application code.

`Init`		Init - initiator for the object. Don't use a constructor here, it will break compatibility with a record.
`CreateData`		CreateData - method to create the data for the record.
`FreeData`		Destroys the allocated Data, Mask and Palette arrays.
`ReleaseData`		ReleaseData - frees the resources when finished with the data.
`ExtractRect`		ExtractRect - find the position of the bounding rectangle from the raw data.
`GetLineStart`		Gets a pointer to the byte position at the beginning of the specified scanline.
`PerformEffect`		PerformEffect - applies a specified special effect to the data of the Raw Image.
`ReadBits`		ReadBits - reads the bit values for the raw image data at a given position.
`ReadChannels`		Reads the Red, Green, Blue and Alpha channel values at a given position in pixel data.
`ReadMask`		Reads the Mask value at the given position in the image data.
`WriteBits`		Writes ABits into Data at the given position.
`WriteChannels`		WriteChannels - writes the specified channel values at the nominated position.
`WriteMask`		Writes the mask for the raw image when assigned and given a valid bit depth in the image description.
`IsMasked`		IsMasked - returns True if the specified pixels are masked.
`IsTransparent`		IsTransparent - returns True if the specified pixels are transparent.
`IsEqual`		IsEqual - returns True if the current and specified images are equal.

`Description`		Description record for the Raw Image.
`Data`		Data - a pointer to the actual data of the image.
`DataSize`		DataSize - pointer to the size of the image.
`Mask`		Mask - pointer to the Mask for use with the image.
`MaskSize`		MaskSize - pointer to the size of the mask.
`Palette`		Palette - pointer to the palette of colors for this image.
`PaletteSize`		PaletteSize - pointer to the size of the palette.

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.