class BMP

• BMP
• Reference
• Object

Overview

TODO handle signed width/height for moving origin/pixel order

Defined in:

bmp.cr
build.cr
decode.cr
fill.cr
parse.cr
write.cr

Constant Summary

GRAYSCALE_8BPP = (0_u8...256).map do |i| Color.new(i, i, i) end

SIGNATURE = 19778_u16

UNSUPPORTED_COMPRESSION = [Compression::BI_BITFIELDS, Compression::BI_ALPHABITFIELDS, Compression::BI_RLE4, Compression::BI_RLE8, Compression::BI_JPEG, Compression::BI_PNG, Compression::BI_CMYK, Compression::BI_CMYKRLE8, Compression::BI_CMYKRLE4]

Constructors

• .fill8bpp(width : UInt32, height : UInt32, & : UInt32, UInt32 -> UInt8) : BMP
• .new(width : UInt32, height : UInt32, bit_per_pixel : BMP::BitPerPixel)
• .new(io : IO)

Class Method Summary

• .from_file(path)

Instance Method Summary

• #color(x, y, color)
• #color(x, y) : Color
• #color_table : Array(Color)
• #color_table=(color_table : Array(Color))
• #data(x, y, d : Bytes)
• #data(x, y) : Bytes
• #data_offset : UInt32
• #data_offset=(data_offset : UInt32)
• #decoder
• #file_size : UInt32
• #file_size=(file_size : UInt32)
• #header : Header
• #header=(header : Header)
• #header_type : HeaderType

  DIB header, there are multiple kind of headers.

• #header_type=(header_type : HeaderType)

  DIB header, there are multiple kind of headers.

• #height
• #padding

  Amount of padding bit at end of each scan lines.

• #pixel_data : Bytes
• #pixel_data=(pixel_data : Bytes)
• #reserved : UInt32
• #reserved=(reserved : UInt32)
• #signature : UInt16

  Bitmap file header

• #signature=(signature : UInt16)

  Bitmap file header

• #to_file(path)
• #width
• #write(io : IO)

Constructor Detail

Class Method Detail

Instance Method Detail