32 lines
945 B
Factor
32 lines
945 B
Factor
! Copyright (C) 2008 Doug Coleman, Joe Groff.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors arrays byte-arrays kernel math namespaces
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opengl.gl sequences math.vectors ui images images.normalization
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images.viewer models ui.gadgets.worlds ui.gadgets fry alien.syntax ;
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IN: cap
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: screenshot-array ( world -- byte-array )
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dim>> [ first 4 * ] [ second ] bi * <byte-array> ;
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: gl-screenshot ( gadget -- byte-array )
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[
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[
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GL_BACK glReadBuffer
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GL_PACK_ALIGNMENT 4 glPixelStorei
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0 0
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] dip
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dim>> first2 GL_RGBA GL_UNSIGNED_BYTE
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]
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[ screenshot-array ] bi
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[ glReadPixels ] keep ;
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: screenshot ( window -- bitmap )
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[ <image> ] dip
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[ gl-screenshot >>bitmap ] [ dim>> >>dim ] bi
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RGBA >>component-order
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t >>upside-down?
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normalize-image ;
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: screenshot. ( window -- )
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[ screenshot <image-gadget> ] [ title>> ] bi open-window ;
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