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- SNAPVGA
-
- by
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- Richard Q. Fox
-
- Version 1.0 July 1988
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- SNAPVGA is a Shareware program that displays any GIF graphic file
- in VGA format. All pictures captured by GIF and displayed through
- SNAPVGA will automatically have the correct height to width ratio
- and will appear in true perspective. The entire picture is in
- view at one time.
- TABLE OF CONTENTS
-
-
- SHAREWARE. . . . . . . . . . . . . . . . . . . . . . . . . . . 3
-
- SNAPVGA FEATURES . . . . . . . . . . . . . . . . . . . . . . . 4
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- COMMANDS . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
- Introduction . . . . . . . . . . . . . . . . . . . . . 5
- Directory. . . . . . . . . . . . . . . . . . . . . . . 5
- Load . . . . . . . . . . . . . . . . . . . . . . . . . 6
- Save . . . . . . . . . . . . . . . . . . . . . . . . . 6
- Change Color . . . . . . . . . . . . . . . . . . . . . 7
- Print. . . . . . . . . . . . . . . . . . . . . . . . . 8
- Exit . . . . . . . . . . . . . . . . . . . . . . . . . 8
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- DOS COMMAND LINE ENTRY . . . . . . . . . . . . . . . . . . . . 9
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- PRINTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
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- REVISION HISTORY . . . . . . . . . . . . . . . . . . . . . . . 10
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- SNAPVGA for the IBM PC is Copyright 1988 (c) by Richard Q. Fox.
- All Rights Reserved. User Supported Software. For a non-
- commercial license, send $10.00 to:
-
- Richard Q. Fox
- 1364 Campbell St.
- Orlando, FL 32806
-
- CompuServe ID: 72356,242
-
- GIF and 'Graphics Interchange Format' are trademarks (tm) of
- CompuServe Incorporated, an H&R Block Company. Portions of this
- program Copyright 1986, 1987 New Dimension Software.
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- SHAREWARE
-
- SNAPVGA is user supported software. SNAPVGA for the IBM PC is
- made available for a free ten day trial period. If you find this
- program useful, you may license the program for non-commercial
- use on one machine by sending $10.00 to:
-
- Richard Q. Fox
- 1364 Campbell St.
- Orlando, FL 32806
-
- SNAPVGA may be licensed for commercial use on up to 10 computers
- at a single site or set of contiguous sites for $50.00. A
- commercial site is defined as a business or individual seeking to
- make a profit by selling SNAPVGA or incorporating this program in
- another program.
-
- Clubs, schools, universities and other organizations may license
- SNAPVGA for $25.00 per 6 copies.
-
- All other rights are reserved.
-
- SNAPVGA may not be changed or modified in any way except by the
- author. SNAPVGA may be freely distributed for the ten day trial
- period as long as it remains in its complete form. Regardless of
- how the copy is obtained, it is requested that all users comply
- with the licensing agreement.
-
- All licensing registrations will be promptly acknowledged. All
- licensees will receive prompt notification of product revisions
- and will be able to purchase updates at a nominal fee.
-
- All warranties are disclaimed, including damage to hardware
- and/or software from use of this product.
-
- SNAPVGA FEATURES
-
- SNAPVGA has four main capabilities. One, SNAPVGA automatically
- displays a GIF picture in VGA format on an IBM PC or clone. Many
- GIF pictures were originally in MAC, Atari, or some other format
- and previously required scrolling to view them on the IBM.
- SNAPVGA compresses or expands the picture while retaining true
- proportions, allowing the user to view the entire picture at
- once.
-
- SNAPVGA's second important feature allows the user to alter the
- brightness and contrast of the picture without having to move to
- another graphics program. The picture can then be saved to disk
- or printed or both.
-
- Finally, SNAPVGA can make a hard copy printout of any GIF file on
- the OKIMATE 20 or STAR NX-1000 Rainbow printer. The printout has
- the correct aspect ratio, is in 256 colors, and is 8" x 10" in
- landscape format. SNAPVGA is issued in 2 versions. One support
- the OKIMATE 20. The other supports the STAR NX-1000 Rainbow.
- Otherwise, the two versions are identical.
-
- SNAPVGA COMMANDS
-
- SNAPVGA is a straight forward, menu driven program that is easy
- to use. When first accessed, SNAPVGA places a blue menu on screen
- with the selected command highlighted in red. The commands are:
- Directory
- Introduction
- Load a Picture
- Change Colors
- Print Picture
- Save a Picture
- Exit
-
-
- Commands are accessed by using the up and down arrows. When the
- desired command is highlighted in red, press carriage return to
- access that command. Alternately, the first letter of each
- command may be pressed, or the space bar may be pressed.
-
-
-
- The Introduction gives a brief synopsis of the program and how to
- use it.
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- The Directory is the way to go if the user wants to load a
- picture but isn't sure of the name, doesn't know what disk it is
- on, or can't remember the spelling.
-
- The Directory function prompts the user for the disk path. If the
- source is the current path, pressing return will list the
- contents of that directory. Typing the disk drive and
- subdirectory followed by a carriage return will also bring in the
- contents of the disk.
-
- Loading pictures via the Directory allows the user to search
- several disks to locate the picture without having to first find
- the picture, then load SNAPVGA, then load the picture. This time
- saving feature permits the handling of many pictures at one
- sitting and eliminates the need to search for pictures before
- using the program.
-
- The Directory sorts up to 240 GIF file names alphabetically. The
- window shows 60 file names. Use the cursor arrow keys to scroll
- through the full list of up to 240 file names. Even better, press
- the FIRST LETTER of the file name, to jump the cursor to the area
- of the window that contains files starting with that letter.
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- Press ENTER to display the picture, or press ESCAPE to return to
- the Main Menu. The ESCAPE key may also be used to abort back to
- the Main Menu while the picture is loading.
-
- While the Directory is being displayed, you may use the F9 key to
- find out the specifications of the highlighted file in the
- directory list. A small window will pop up, showing the height,
- width, and color resolution of the GIF file. A typical file might
- by reported as 320 x 200, in 256 colors. You may select the file
- while the specification window is showing, by pressing the
- "ENTER" key, or you may use the cursor arrows to move on to other
- files in the directory.
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-
-
- The Load command allows direct loading of pictures from any
- drive. The load command first prompts for the path, followed by a
- carriage return. The user is then prompted for the file name and
- the file extender. If no file extender is entered, an extender of
- GIF is assumed. Many users are adding their own personal
- extenders to GIF files to facilitate sorting. Extenders such as
- .trv (for travel) for example are recognized by the Load command
- of SNAPVGA as long as the file is in GIF format. While the
- picture is loading, the ESCAPE key may be pressed to abort back
- to the Main Menu.
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- The Save commands operates the same as the Load command. The user
- is asked to specify the path, the drive, the file name and the
- extender. If the specified name already exists, pressing carriage
- return will save the file.
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- WARNING: WHEN SAVING A PICTURE WITH SNAPVGA, IT IS BEST TO SAVE
- THE FILE UNDER A NEW NAME TO AVOID OVERWRITING THE ORIGINAL GIF
- FILE. ALL FILES WRITTEN BY SNAPVGA ARE 320x200 by 256 COLORS,
- REGARDLESS OF THE FORMAT OF THE ORIGINAL FILE.
-
- Change Color allows the user to change the brightness and
- contract of any picture. The Function keys provide the control
- over the brightness and contrast.
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- F1 is the HELP key. Press it at any time for a summary of
- instructions.
-
- F2 restores the original palette of the picture. If you do
- not like the changes you are making, you can press F2 to
- UNDO them. This key may be pressed as often as desired.
-
- F3 Decreases the contrast.
- F4 Increases the contrast.
- Press these keys as often as needed, until you like the
- result. The amount of change made by each depression of a
- key can be controlled. The NUMBER keys 1 through 9 select
- the step size. "1" is the smallest step size. "9" is the
- largest step size. "5" is automatically selected as the
- default step size, when you start the program. Press a
- NUMBER key, and then press F3 and or F4 repeatedly.
-
- F5 Decreases brightness.
- F6 Increases brightness.
- The operation of these keys is the same as that for F3 / F4.
-
- F9 Recalls a memorized palette setting.
- F10 Saves a memorized palette setting.
- While you are experimenting with the brightness and contrast
- settings, you can memorize the current setting by pressing
- F10. A tone confirms that the setting is memorized. You can
- then press any other function keys, to continue
- experimenting. When you want to recall the memorized
- setting, press F9. You can press F9 repeatedly, without
- erasing its setting. The only key that changes the memorized
- setting is F10.
-
- Once the picture is to the user's satisfaction, pressing ESC,
- SPACE, or ENTER returns SNAPVGA to the main menu. At this point,
- the new picture can be saved. The picture may be altered and
- saved as many times as the user wishes. Simply save the altered
- picture under a new name to avoid destroying the original.
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- The Print command prints the picture on a OKIMATE 20 or STAR NX-
- 1000 Rainbow. There are two versions of SNAPVGA, one for each
- printer. The printed picture is 8" x 10" and is in landscape
- format. The best paper for printing has a waxed, high gloss
- surface and can be obtained through office supply stores at about
- 10 cents a sheet. This paper gives dense, overlapping color
- saturation without streaks and gaps.
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-
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- Exit allows the user to leave SNAPVGA.
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- DOS COMMAND LINE ENTRY
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- Snapvga may be initiated with a DOS command line which contains
- SNAPVGA and one of the following:
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- The name of the file to display
- If the file exists, it is loaded and displayed
- immediately.
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- The name of the directory to use
- If the directory exists, Snapvga goes immediately to
- its Directory function, with all file names in that
- Directory listed in a window.
-
- Nothing
- Snapvga starts with an Title Screen, and a menu of
- choices.
-
- Drive names and path names may be included in the argument passed
- to Snapvga. A file extender of .GIF is assumed, if no extender is
- present for a file name.
-
- Examples:
-
- SNAPVGA a:car.gif (Loads and displays
- the file)
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- SNAPVGA c:\gif\bird.gif (Loads and displays
- the file)
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- SNAPVGA c:\gif (Shows the
- directory)
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- SNAPVGA (Shows the title
- screen, ready for
- further commands)
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- PRINTERS
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- SNAPVGA supports several printers. Each version of the program
- supports one printer. This version of the program is written for
- the OKIMATE 20 or STAR NX-1000 Rainbow. SNAPVGA uses enhanced
- programming which gives OKIMATE 20 and STAR NX-1000 Rainbow
- prints crisp, solid color and emulates the screen colors as
- closely as possible.
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- REVISION HISTORY
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- Revision 1.0 is a new release.
-
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- Richard Q. Fox July 31, 1988