doc/11_3_thumbnails.html

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  32 <H1>11.3 Thumbnails</H1>
  33 <P STYLE="text-decoration: none"><I>Note: This page only refers the
  34 GQview thumbnail caching mechanism, the shared thumbnail cache
  35 mechanism is not explained here.</I></P>
  36 <P><U>Format</U></P>
  37 <P STYLE="margin-left: 0.79in">Thumbnails are stored in PNG image
  38 format. The thumbnail name is the name of the source image with
  39 &ldquo;.png&rdquo; appended.</P>
  40 <P STYLE="margin-left: 0.79in">The modification time (mtime) of the
  41 thumbnail is set to match the source file. Thumbnails are regenerated
  42 when the timestamps of the thumbnail and source file do not match.</P>
  43 <P STYLE="margin-left: 0.79in"><BR><BR>
  44 </P>
  45 <P><U>Location</U></P>
  46 <P STYLE="margin-left: 0.79in">Thumbnails are stored in:</P>
  47 <P STYLE="margin-left: 1.58in">($HOME)/.gqview/thumbnails</P>
  48 <P STYLE="margin-left: 0.79in">The directory structure of the
  49 thumbnail cache duplicates the location of the source files, for
  50 example a source file with the name:</P>
  51 <P STYLE="margin-left: 1.58in">/path/to/image.jpg</P>
  52 <P STYLE="margin-left: 0.79in">will store the thumbnail in:</P>
  53 <P STYLE="margin-left: 1.58in">($HOME)/.gqview/thumbnails/path/to/image.jpg.png</P>
  54 <P STYLE="margin-left: 0.79in">When thumbnails are to be stored local
  55 to the source file, the thumbnail will be placed in:</P>
  56 <P STYLE="margin-left: 1.58in">/path/to/.thumbnails/image.jpg.png</P>
  57 <P STYLE="margin-left: 0.79in">Local thumbnail caching is enabled
  58 with the option &ldquo;Cache thumbnails into .thumbnails&rdquo; on
  59 the <A HREF="10_1_general.html">General</A> tab of the options
  60 dialog. If it is not possible to store the thumbnail local to the
  61 source file (usually due to no write permissions), GQview will fall
  62 back to saving the thumbnail in the user's ($HOME)/.gqview/thumbnails
  63 folder.</P>
  64 <P><BR><BR>
  65 </P>
  66 <P><U>Size</U></P>
  67 <P STYLE="margin-left: 0.79in">GQview allows the following sizes for
  68 thumbnails:</P>
  69 <P STYLE="margin-left: 1.58in">24x24, 32x32, 48x48, 64x64, 96x72,
  70 96x96, 129x96, 128x128, 160x120, 160x160, 192x144, 192x192, 256x192,
  71 256x256</P>
  72 <P STYLE="margin-left: 0.79in">The thumbnail is scaled to fit within
  73 the preferred size maintaining the aspect ratio. Thumbnails are not
  74 cached for images that are equal to or smaller than the preferred
  75 thumbnail size.</P>
  76 <P STYLE="margin-left: 0.79in">When a cached thumbnail's width and
  77 height do not match the preferred size, the thumbnail is regenerated.</P>
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