The icons at the right side of the images list represent the attributes that have been applied to the picture box. A black icon will signify the attribute defined by the column header has been applied to the picture or the picture box. A red icon will signify FLIGHTCHECK® has detected some sort of “error” regarding the attribute.
• The “None” background icon signifies that the picture background has been set to the special transparency color called “None”. Several problems can arise when an image is printed containing white around its edges. When the pixels are transferred to the printed page the white pixels will literally paint over and essentially erase the destination area. The application must therefore create a special “clip area” when drawing the image to prevent the erasure. Unfortunately, the calculations to perform this clipping can be of such low quality that the edges of the image will appear to be “jagged” when printed.
• The “clipping path” icon will represent the fact that the image contains postscript commands that will clip the image causing only certain portions of the image to be printable. Note that if the background of the picture box has been set to “None”, for a transparent effect, a clipping path is usually required for a pixel based image, otherwise the edges will print “jagged”. If the needed clipping path is missing, the icon will be displayed in red.
• The “picture box frame” icon will indicate that the picture box contains a frame or border. If the frame is a custom border, then FLIGHTCHECK® will usually flag this as an “error” because such frames are usually “bitmap” (they should be postscript drawings instead) and will not print very well.
• The “picture box rotation and skew” icons will indicate that the picture box itself has been rotated or skewed.
• The “contents flip” icons will indicate that the contents of the picture box has been flipped horizontally or vertically.
• The “image rotation” icon indicates that the picture inside the picture box has been rotated. It is usually considered a better practice to always rotate an image within the application that created it, mostly to save processing time, allowing you to place the image on the document page straight up.
• The “image skew” icon indicates that a skew has been applied to the picture inside the picture box.
• The “Style or Image Control” icon indicates that a Style or Contrast has been applied to the image. FLIGHTCHECK® usually considers any Style to be an “error” because some printers cannot handle the stylization commands, or literally throw out the information when substituting with a hi-res image.
• The “HS/TF” icons indicate that the image contains a “Halftone Screen” or a “Transfer Function”, or both.
