ml
44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
package bitmap
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// Type describes the data layout of a bitmap.
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type Type byte
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// Type constants are listed below.
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const (
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// TypeFlat8Bit bitmaps are 8-bit paletted bitmaps that have their pixel stored in a flat layout.
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TypeFlat8Bit Type = 2
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// TypeCompressed8Bit bitmaps are 8-bit paletted bitmaps that have their pixel compressed in storage.
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// Compression is using run-length-encoding (RLE); See package rle.
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TypeCompressed8Bit Type = 4
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)
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// Flag adds further properties.
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type Flag uint16
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// Flag constants are listed below.
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const (
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// FlagTransparent is set for bitmaps that shall treat palette index 0x00 as fully transparent.
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FlagTransparent Flag = 0x0001
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)
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// HeaderSize is the size of the Header structure, in bytes.
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const HeaderSize = 28
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// Area is a placeholder for either a rectangle, or an anchoring point (first two entries).
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type Area [4]int16
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// Header contains the meta information for a bitmap.
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type Header struct {
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_ [4]byte
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Type Type
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_ byte
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Flags Flag
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Width int16
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Height int16
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Stride uint16
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WidthFactor byte
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HeightFactor byte
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Area Area
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PaletteOffset int32
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}
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