doc/10_2_image.html

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  21                                         <P ALIGN=CENTER>Image &ndash; Options Explaned</P>
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  31 <H1>10.2 Image Options</H1>
  32 <P STYLE="font-style: normal; text-decoration: none">This section
  33 describes the options presented under the Image Tab of the
  34 preferences dialog.</P>
  35 <P><BR><BR>
  36 </P>
  37 <P STYLE="font-style: normal; text-decoration: none"><U>Zoom</U></P>
  38 <P STYLE="margin-left: 0.79in; font-style: normal; text-decoration: none">
  39 <B>Quality</B>: Selects the method used to scale the size of an
  40 image.</P>
  41 <P STYLE="margin-left: 1.58in; font-style: normal; text-decoration: none">
  42 <B>Nearest</B>: Fastest scaler, but results in poor image
  43 quality.<BR><B>Tiles</B>: Results are somewhat close to bilinear,
  44 with better speed.<BR><B>Bilinear</B>: High quality results,
  45 moderately fast.<BR><B>Hyper</B>: Slowest scaler, sometimes gives
  46 better results than bilinear.</P>
  47 <P STYLE="margin-left: 0.79in; font-style: normal; text-decoration: none">
  48 <B>Two pass zooming</B>: Enables GQview to first display a scaled
  49 image using the nearest zoom quality. After image decoding is
  50 complete, the image is scaled again using the selected &ldquo;Zoom
  51 (scaling)&rdquo; method. This allows faster display of an image as it
  52 is decoded from the source file.</P>
  53 <P STYLE="margin-left: 0.79in; font-style: normal; text-decoration: none">
  54 <B>Allow enlargement of image for zoom to fit</B>: Enable this to
  55 allow GQview to increase the image size for images that are smaller
  56 than the current view area when the zoom is set to &ldquo;Fit to
  57 Window&rdquo;.</P>
  58 <P STYLE="margin-left: 0.79in; font-style: normal; text-decoration: none">
  59 <B>Zoom increment</B>: Adjusts the step size when zooming in or out
  60 on an image. This value corresponds to the percentage of the original
  61 image.</P>
  62 <P><BR><BR>
  63 </P>
  64 <P STYLE="font-style: normal; text-decoration: none"><U>Zoom control</U></P>
  65 <P STYLE="margin-left: 0.79in"><SPAN STYLE="text-decoration: none"><B>When
  66 new image is selected</B>: </SPAN>This controls the behavior of the
  67 zoom setting when changing the displayed image.</P>
  68 <P STYLE="margin-left: 1.58in"><B>Zoom to original size</B>: The new
  69 image is set to it's original size.<BR><B>Fit image to window</B>:
  70 The new image's zoom is changed so that the image will fit within the
  71 current view area.<BR><B>Leave zoom at previous setting</B>: The zoom
  72 setting is unchanged, the new image will be scaled the same as the
  73 previous image.</P>
  74 <P><BR><BR>
  75 </P>
  76 <P><U>Appearance</U></P>
  77 <P STYLE="margin-left: 0.79in"><B>Black background</B>: Enable this
  78 to draw the image background (the area around the image) in black.</P>
  79 <P><BR><BR>
  80 </P>
  81 <P><U>Convenience</U></P>
  82 <P STYLE="margin-left: 0.79in"><B>Refresh on file change</B>: GQview
  83 will monitor currently active images and folders for changes in their
  84 modification time, and update the display if it changes.</P>
  85 <P STYLE="margin-left: 1.58in"><I>Note:</I> Disable this if the
  86 system will not go into sleep mode due to occasional disk activity
  87 from the time check, or if GQview updates too often for folders with
  88 continuously changing content.</P>
  89 <P STYLE="margin-left: 0.79in; text-decoration: none"><B>Preload next
  90 image</B>: Enabling this option will cause GQview to read the next
  91 logical image from disk when idle, it will also retain the previously
  92 viewed image in memory. By reading the nearest images into memory,
  93 time to display the next image is reduced.</P>
  94 <DL>
  95         <DL>
  96                 <DL>
  97                         <DL>
  98                                 <DD STYLE="margin-bottom: 0.2in"><SPAN STYLE="text-decoration: none"><I>Note:</I>
  99                                 This option will increase GQview memory requirements, and may
 100                                 cause performance issues with very large images.</SPAN> If the
 101                                 use of GQview results in the system noticeably swapping memory to
 102                                 disk, try disabling this feature.</DD></DL>
 103                 </DL>
 104         </DL>
 105 </DL>
 106 <P STYLE="margin-left: 0.79in; margin-bottom: 0.2in; text-decoration: none">
 107 <B>Auto rotate image using EXIF information</B>: Auto rotates images
 108 based on data stored in images that include EXIF data.</P>
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