56 lines
1.6 KiB
Factor
Executable File
56 lines
1.6 KiB
Factor
Executable File
! Copyright (C) 2009 Joe Groff, Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: alien.c-types kernel combinators sequences
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math windows.gdi32 windows.types images destructors
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accessors fry locals classes.struct ;
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IN: windows.offscreen
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: (bitmap-info) ( dim -- BITMAPINFO )
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[
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BITMAPINFO <struct>
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dup bmiHeader>>
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BITMAPINFOHEADER heap-size >>biSize
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] dip
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[ first >>biWidth ]
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[ second >>biHeight ]
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[ first2 * 4 * >>biSizeImage ] tri
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1 >>biPlanes
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32 >>biBitCount
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BI_RGB >>biCompression
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72 >>biXPelsPerMeter
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72 >>biYPelsPerMeter
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0 >>biClrUsed
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0 >>biClrImportant
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drop ;
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: make-bitmap ( dim dc -- hBitmap bits )
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[ nip ]
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[
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swap (bitmap-info) DIB_RGB_COLORS f <void*>
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[ f 0 CreateDIBSection ] keep *void*
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] 2bi
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[ [ SelectObject drop ] keep ] dip ;
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: make-offscreen-dc-and-bitmap ( dim -- dc hBitmap bits )
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[ f CreateCompatibleDC ] dip over make-bitmap ;
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: bitmap>byte-array ( bits dim -- byte-array )
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product 4 * memory>byte-array ;
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: bitmap>image ( bits dim -- image )
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[ bitmap>byte-array ] keep
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<image>
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swap >>dim
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swap >>bitmap
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BGRX >>component-order
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ubyte-components >>component-type
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t >>upside-down? ;
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: with-memory-dc ( quot: ( hDC -- ) -- )
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[ [ f CreateCompatibleDC &DeleteDC ] dip call ] with-destructors ; inline
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:: make-bitmap-image ( dim dc quot -- image )
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dim dc make-bitmap [ &DeleteObject drop ] dip
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quot dip
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dim bitmap>image ; inline
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