equal
deleted
inserted
replaced
33 |
33 |
34 XWorkstation comment:' |
34 XWorkstation comment:' |
35 COPYRIGHT (c) 1989 by Claus Gittinger |
35 COPYRIGHT (c) 1989 by Claus Gittinger |
36 All Rights Reserved |
36 All Rights Reserved |
37 |
37 |
38 $Header: /cvs/stx/stx/libview/XWorkstation.st,v 1.51 1995-07-27 23:54:05 claus Exp $ |
38 $Header: /cvs/stx/stx/libview/XWorkstation.st,v 1.52 1995-08-03 01:33:27 claus Exp $ |
39 '! |
39 '! |
40 |
40 |
41 !XWorkstation class methodsFor:'documentation'! |
41 !XWorkstation class methodsFor:'documentation'! |
42 |
42 |
43 copyright |
43 copyright |
54 " |
54 " |
55 ! |
55 ! |
56 |
56 |
57 version |
57 version |
58 " |
58 " |
59 $Header: /cvs/stx/stx/libview/XWorkstation.st,v 1.51 1995-07-27 23:54:05 claus Exp $ |
59 $Header: /cvs/stx/stx/libview/XWorkstation.st,v 1.52 1995-08-03 01:33:27 claus Exp $ |
60 " |
60 " |
61 ! |
61 ! |
62 |
62 |
63 documentation |
63 documentation |
64 " |
64 " |
4876 !XWorkstation methodsFor:'retrieving pixels'! |
4876 !XWorkstation methodsFor:'retrieving pixels'! |
4877 |
4877 |
4878 getPixelX:x y:y from:aDrawableId |
4878 getPixelX:x y:y from:aDrawableId |
4879 "return the pixel value at x/y; coordinates start at 0/0 for the upper left." |
4879 "return the pixel value at x/y; coordinates start at 0/0 for the upper left." |
4880 |
4880 |
4881 %{ /* NOCONTEXT */ |
4881 %{ /* UNLIMITEDSTACK NOCONTEXT */ |
4882 |
4882 |
4883 Window win = _WindowVal(aDrawableId); |
4883 Window win = _WindowVal(aDrawableId); |
4884 XImage *img; |
4884 XImage *img; |
4885 int ret; |
4885 int ret; |
4886 int xpos, ypos; |
4886 int xpos, ypos; |
4894 img = XGetImage(myDpy, win, xpos, ypos, 1, 1, (unsigned)~0, ZPixmap); |
4894 img = XGetImage(myDpy, win, xpos, ypos, 1, 1, (unsigned)~0, ZPixmap); |
4895 ret = XGetPixel(img, 0, 0); |
4895 ret = XGetPixel(img, 0, 0); |
4896 XDestroyImage(img); |
4896 XDestroyImage(img); |
4897 RETURN ( _MKSMALLINT(ret) ); |
4897 RETURN ( _MKSMALLINT(ret) ); |
4898 } |
4898 } |
4899 %} |
4899 %}. |
4900 . |
|
4901 self primitiveFailed. |
|
4902 ^ nil |
4900 ^ nil |
4903 ! |
4901 ! |
4904 |
4902 |
4905 getBitsFrom:aDrawableId x:srcx y:srcy width:w height:h into:imageBits |
4903 getBitsFrom:aDrawableId x:srcx y:srcy width:w height:h into:imageBits |
4906 "get bits from a drawable into the imageBits. The storage for the bits |
4904 "get bits from a drawable into the imageBits. The storage for the bits |
4918 |
4916 |
4919 info := Array with:nil "depth" |
4917 info := Array with:nil "depth" |
4920 with:nil "bit order" |
4918 with:nil "bit order" |
4921 with:nil "bytes_per_line" |
4919 with:nil "bytes_per_line" |
4922 with:nil "byte_order". |
4920 with:nil "byte_order". |
|
4921 |
|
4922 "/ had to extract the getPixel call into a separate method, to specify |
|
4923 "/ unlimitedStack (some implementations use alloca and require huge amounts |
|
4924 "/ of temporary stack space |
4923 |
4925 |
4924 (self primGetBitsFrom:aDrawableId x:srcx y:srcy width:w height:h into:imageBits infoInfo:info) ifTrue:[ |
4926 (self primGetBitsFrom:aDrawableId x:srcx y:srcy width:w height:h into:imageBits infoInfo:info) ifTrue:[ |
4925 ^ info |
4927 ^ info |
4926 ]. |
4928 ]. |
4927 " |
4929 " |