Rockwell Automation FactoryTalk View Site Edition Users Guide - Manual (Page 421)

16 • C REATING GRAPHIC DISPLAYS
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Palette matching is an issue only for 256-color video adapters. 24-bit color systems do not
match palettes and 16-color systems dither colors (that is, alternate pixels of different
colors to approximate another color).
Do not use the Scale option
The Scale option in the Display Settings dialog box causes the contents of a graphic
display to change size to suit the size of the graphic display’s window.
To speed up the display of a graphic containing bitmaps, choose Pan rather than Scale.
Bitmaps take longer to draw when they are scaled to a size different from their original
size.
An OLE object can be a bitmap or a bitmap wrapped in a metafile. These types of OLE
objects will also draw more slowly when scaled.
Avoid large bitmaps
Graphic displays that contain large bitmaps consume memory and can be very slow to
show because of the delay in loading the bitmaps from disk.
Avoid many bitmaps
Whenever possible, create graphic objects using the FactoryTalk View drawing objects.
You can also change a bitmap to an FactoryTalk View object by converting the bitmap to
wallpaper, tracing over the bitmap with FactoryTalk View drawing objects, and then
deleting the bitmap.
When to use a bitmap
Bitmaps generally make graphic displays slower. However, objects with large amounts of
detail, such as subtle shading, might draw more quickly if converted to a bitmap because
bitmaps take the same amount of time to draw regardless of their complexity.
Using the Image Browser to import images
Use the Image Browser to import images as needed while you set up graphic objects.
In the Image Browser you can:
 Import images into the application.
 Select the image to use on a graphic object.
 Delete images from the application.