70 lines
2.2 KiB
Scheme
70 lines
2.2 KiB
Scheme
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;; author -> Norbert Freudemann
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;; creation date : 16/07/2001
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;; last change : 16/07/2001
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; ---
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(define (create-pixmap drawable width height depth)
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(let ((display (drawable-display drawable))
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(pixmap (%create-pixmap (display-Xdisplay display)
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(drawable-Xdrawable) widht height depth)))
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(make-pixmap pixmap display)))
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(import-lambda-definition %create-pixmap (Xdisplay Xdrawable w h depth)
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"Create_Pixmap")
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; ---
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(define (create-bitmap-from-data window data width height)
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(let ((display (window-display window))
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(pixmap (%create-bitmap-from-data (display-Xdisplay display)
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(window-Xwindow window)
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data width height)))
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(make-pixmap pixmap display)))
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(improt-lambda-definition %create-bitmap-from-data (Xdisplay Xdrawable data w h)
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"Create_Bitmap_From_Data")
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; ---
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(define (create-pixmap-from-bitmap-data win data widht height
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foregrnd backgrnd depth)
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(let ((display (window-display window))
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(pixmap (create-pixmap-from-bitmap-data (display-Xdisplay display)
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(window-Xwindow window)
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data widht height foregrnd
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backgrd depth)))
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(make-pixmap pixmap display)))
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(import-lambda-definition %create-pixmap-from-bitmap-data
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(Xdisplay Xdrawabel data w h f b depth)
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"Create_Pixmap_From_Bitmap_Data")
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; Returns a list of five elements: (pixmap widht heigth x y)
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(define (read-bitmap-file drawable filename)
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(let ((res (%read-bitmap-file (display-Xdisplay (drawable-display drawable))
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(drawable-Xobject drawable)
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filename)))
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(set-car! res (make-pixmap (drawable-display drawable) (car res)))))
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(import-lambda-definition %read-bitmap-file (Xdisplay Xdrawable file)
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"Read_Bitmap_File")
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; --- coord is optional. It should be the empty list or (x-hot y-hot)
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(define (write-bitmap-file filename pixmap width height . coord)
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(let ((dpy (display-Xdisplay (pixmap-display pixmap)))
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(xy-hot (cond
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((null? coord) (list -1 -1))
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((null? (cdr coord))
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(error "zero or both coordinates must be defined"))
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(else coord))))
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(%write-bitmap-file dpy filename pixmap widht height
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(car xy-hot) (cadr xy-hot))))
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(import-lambda-definition %write-bitmap-file (Xdisplay file Xpixmap w h x y)
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"Write_Bitmap_File")
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