doc/10_2_image.html

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