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!OmniDesk/Utilities/!CloseView/!Help

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

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CloseView Magnifier
~~~~~~~~~~~~~~~~~~~

An OmniDesk Utility
by Richard G. Hallas

CloseView Magnifier is similar in concept to Acorn's magnifying glass utility, except that you can use the computer as normal while it is operating. It makes a very useful alignment tool (especially when used in conjunction with OmniDesk's cursor-key activated pointer movement) as it also provides a pair of optional cross-hairs.

Opening the main menu over the magnifier window presents the main utility menu:

'Info' leads to a standard information window.

'Magnification etc' leads to a window in which you can set the magnification factors, as well as whether a cross-hair appears. You can also set whether the magnifier window should magnify itself! This 'Recursive Viewer' option can lead to some very interesting effects. When this settings window is open, you can use function keys <F1> and <F2> to turn the cross-hairs and recursive magnification (respectively) on and off; and clicking <Select> and <Adjust> on the magnifier window itself has the same effect.

'Window position' leads to a window which lets you determine where the magnifier window appears on the screen. This corresponds to an invisible grid, and when you change screen mode the window will snap to this grid. (This feature can be disabled by clicking <Adjust> on the small window icon, which makes it disappear.)

'Save settings' will save all the contents of the 'Magnification etc' window in addition to the screen location of the magnifier.

RISC OS 3 users will find that colour dithering is used to simulate the screen border colour in the magnifier window.
00000000  43 6c 6f 73 65 56 69 65  77 20 4d 61 67 6e 69 66  |CloseView Magnif|
00000010  69 65 72 0a 7e 7e 7e 7e  7e 7e 7e 7e 7e 7e 7e 7e  |ier.~~~~~~~~~~~~|
00000020  7e 7e 7e 7e 7e 7e 7e 0a  0a 41 6e 20 4f 6d 6e 69  |~~~~~~~..An Omni|
00000030  44 65 73 6b 20 55 74 69  6c 69 74 79 0a 62 79 20  |Desk Utility.by |
00000040  52 69 63 68 61 72 64 20  47 2e 20 48 61 6c 6c 61  |Richard G. Halla|
00000050  73 0a 0a 43 6c 6f 73 65  56 69 65 77 20 4d 61 67  |s..CloseView Mag|
00000060  6e 69 66 69 65 72 20 69  73 20 73 69 6d 69 6c 61  |nifier is simila|
00000070  72 20 69 6e 20 63 6f 6e  63 65 70 74 20 74 6f 20  |r in concept to |
00000080  41 63 6f 72 6e 27 73 20  6d 61 67 6e 69 66 79 69  |Acorn's magnifyi|
00000090  6e 67 20 67 6c 61 73 73  20 75 74 69 6c 69 74 79  |ng glass utility|
000000a0  2c 20 65 78 63 65 70 74  20 74 68 61 74 20 79 6f  |, except that yo|
000000b0  75 20 63 61 6e 20 75 73  65 20 74 68 65 20 63 6f  |u can use the co|
000000c0  6d 70 75 74 65 72 20 61  73 20 6e 6f 72 6d 61 6c  |mputer as normal|
000000d0  20 77 68 69 6c 65 20 69  74 20 69 73 20 6f 70 65  | while it is ope|
000000e0  72 61 74 69 6e 67 2e 20  49 74 20 6d 61 6b 65 73  |rating. It makes|
000000f0  20 61 20 76 65 72 79 20  75 73 65 66 75 6c 20 61  | a very useful a|
00000100  6c 69 67 6e 6d 65 6e 74  20 74 6f 6f 6c 20 28 65  |lignment tool (e|
00000110  73 70 65 63 69 61 6c 6c  79 20 77 68 65 6e 20 75  |specially when u|
00000120  73 65 64 20 69 6e 20 63  6f 6e 6a 75 6e 63 74 69  |sed in conjuncti|
00000130  6f 6e 20 77 69 74 68 20  4f 6d 6e 69 44 65 73 6b  |on with OmniDesk|
00000140  27 73 20 63 75 72 73 6f  72 2d 6b 65 79 20 61 63  |'s cursor-key ac|
00000150  74 69 76 61 74 65 64 20  70 6f 69 6e 74 65 72 20  |tivated pointer |
00000160  6d 6f 76 65 6d 65 6e 74  29 20 61 73 20 69 74 20  |movement) as it |
00000170  61 6c 73 6f 20 70 72 6f  76 69 64 65 73 20 61 20  |also provides a |
00000180  70 61 69 72 20 6f 66 20  6f 70 74 69 6f 6e 61 6c  |pair of optional|
00000190  20 63 72 6f 73 73 2d 68  61 69 72 73 2e 0a 0a 4f  | cross-hairs...O|
000001a0  70 65 6e 69 6e 67 20 74  68 65 20 6d 61 69 6e 20  |pening the main |
000001b0  6d 65 6e 75 20 6f 76 65  72 20 74 68 65 20 6d 61  |menu over the ma|
000001c0  67 6e 69 66 69 65 72 20  77 69 6e 64 6f 77 20 70  |gnifier window p|
000001d0  72 65 73 65 6e 74 73 20  74 68 65 20 6d 61 69 6e  |resents the main|
000001e0  20 75 74 69 6c 69 74 79  20 6d 65 6e 75 3a 0a 0a  | utility menu:..|
000001f0  27 49 6e 66 6f 27 20 6c  65 61 64 73 20 74 6f 20  |'Info' leads to |
00000200  61 20 73 74 61 6e 64 61  72 64 20 69 6e 66 6f 72  |a standard infor|
00000210  6d 61 74 69 6f 6e 20 77  69 6e 64 6f 77 2e 0a 0a  |mation window...|
00000220  27 4d 61 67 6e 69 66 69  63 61 74 69 6f 6e 20 65  |'Magnification e|
00000230  74 63 27 20 6c 65 61 64  73 20 74 6f 20 61 20 77  |tc' leads to a w|
00000240  69 6e 64 6f 77 20 69 6e  20 77 68 69 63 68 20 79  |indow in which y|
00000250  6f 75 20 63 61 6e 20 73  65 74 20 74 68 65 20 6d  |ou can set the m|
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00000270  74 6f 72 73 2c 20 61 73  20 77 65 6c 6c 20 61 73  |tors, as well as|
00000280  20 77 68 65 74 68 65 72  20 61 20 63 72 6f 73 73  | whether a cross|
00000290  2d 68 61 69 72 20 61 70  70 65 61 72 73 2e 20 59  |-hair appears. Y|
000002a0  6f 75 20 63 61 6e 20 61  6c 73 6f 20 73 65 74 20  |ou can also set |
000002b0  77 68 65 74 68 65 72 20  74 68 65 20 6d 61 67 6e  |whether the magn|
000002c0  69 66 69 65 72 20 77 69  6e 64 6f 77 20 73 68 6f  |ifier window sho|
000002d0  75 6c 64 20 6d 61 67 6e  69 66 79 20 69 74 73 65  |uld magnify itse|
000002e0  6c 66 21 20 54 68 69 73  20 27 52 65 63 75 72 73  |lf! This 'Recurs|
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00000320  74 69 6e 67 20 65 66 66  65 63 74 73 2e 20 57 68  |ting effects. Wh|
00000330  65 6e 20 74 68 69 73 20  73 65 74 74 69 6e 67 73  |en this settings|
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00000350  20 79 6f 75 20 63 61 6e  20 75 73 65 20 66 75 6e  | you can use fun|
00000360  63 74 69 6f 6e 20 6b 65  79 73 20 3c 46 31 3e 20  |ction keys <F1> |
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000003a0  61 67 6e 69 66 69 63 61  74 69 6f 6e 20 28 72 65  |agnification (re|
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000003c0  6e 64 20 6f 66 66 3b 20  61 6e 64 20 63 6c 69 63  |nd off; and clic|
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00000460  72 65 20 74 68 65 20 6d  61 67 6e 69 66 69 65 72  |re the magnifier|
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00000490  68 69 73 20 63 6f 72 72  65 73 70 6f 6e 64 73 20  |his corresponds |
000004a0  74 6f 20 61 6e 20 69 6e  76 69 73 69 62 6c 65 20  |to an invisible |
000004b0  67 72 69 64 2c 20 61 6e  64 20 77 68 65 6e 20 79  |grid, and when y|
000004c0  6f 75 20 63 68 61 6e 67  65 20 73 63 72 65 65 6e  |ou change screen|
000004d0  20 6d 6f 64 65 20 74 68  65 20 77 69 6e 64 6f 77  | mode the window|
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00000500  65 61 74 75 72 65 20 63  61 6e 20 62 65 20 64 69  |eature can be di|
00000510  73 61 62 6c 65 64 20 62  79 20 63 6c 69 63 6b 69  |sabled by clicki|
00000520  6e 67 20 3c 41 64 6a 75  73 74 3e 20 6f 6e 20 74  |ng <Adjust> on t|
00000530  68 65 20 73 6d 61 6c 6c  20 77 69 6e 64 6f 77 20  |he small window |
00000540  69 63 6f 6e 2c 20 77 68  69 63 68 20 6d 61 6b 65  |icon, which make|
00000550  73 20 69 74 20 64 69 73  61 70 70 65 61 72 2e 29  |s it disappear.)|
00000560  0a 0a 27 53 61 76 65 20  73 65 74 74 69 6e 67 73  |..'Save settings|
00000570  27 20 77 69 6c 6c 20 73  61 76 65 20 61 6c 6c 20  |' will save all |
00000580  74 68 65 20 63 6f 6e 74  65 6e 74 73 20 6f 66 20  |the contents of |
00000590  74 68 65 20 27 4d 61 67  6e 69 66 69 63 61 74 69  |the 'Magnificati|
000005a0  6f 6e 20 65 74 63 27 20  77 69 6e 64 6f 77 20 69  |on etc' window i|
000005b0  6e 20 61 64 64 69 74 69  6f 6e 20 74 6f 20 74 68  |n addition to th|
000005c0  65 20 73 63 72 65 65 6e  20 6c 6f 63 61 74 69 6f  |e screen locatio|
000005d0  6e 20 6f 66 20 74 68 65  20 6d 61 67 6e 69 66 69  |n of the magnifi|
000005e0  65 72 2e 0a 0a 52 49 53  43 20 4f 53 20 33 20 75  |er...RISC OS 3 u|
000005f0  73 65 72 73 20 77 69 6c  6c 20 66 69 6e 64 20 74  |sers will find t|
00000600  68 61 74 20 63 6f 6c 6f  75 72 20 64 69 74 68 65  |hat colour dithe|
00000610  72 69 6e 67 20 69 73 20  75 73 65 64 20 74 6f 20  |ring is used to |
00000620  73 69 6d 75 6c 61 74 65  20 74 68 65 20 73 63 72  |simulate the scr|
00000630  65 65 6e 20 62 6f 72 64  65 72 20 63 6f 6c 6f 75  |een border colou|
00000640  72 20 69 6e 20 74 68 65  20 6d 61 67 6e 69 66 69  |r in the magnifi|
00000650  65 72 20 77 69 6e 64 6f  77 2e 0a                 |er window..|
0000065b