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56 lines
1.7 KiB
56 lines
1.7 KiB
15 years ago
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<html>
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<head>
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<title>KSquirrel: development</title>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<meta name='Author' content='Baryshev Dmitry/Krasu'>
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<link rel="stylesheet" href="styles.css" type="text/css">
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</head>
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<body>
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<p>For support of a metainformation, saved together with some images, in ksquirrel-libs exists the special
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structure similar to map. Support of a metainformation COMPLETELY lays down on library i.e.
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if in image file there are any collateral data, but library ignores it,
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KSquirrel (as well as any other viewer on the basis of ksquirrel-libs) will not display it in
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"Image Properties" dialog.
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<p>At present EXIF the information is not supported yet, but in v0.6.0 it possibly will be realized.
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<p>Formally work with a metainformation looks so: [read some information from a file] => [group it] => [keep in object 'finfo']. Further you can see an example of the elementary reading and preservation of a metainformation.
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<p>You should read metainfo in <b>fmt_read_next()</b> and store it in <b>finfo.meta</b>.
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<p>
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<b><u>Example</u></b>
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<table cellpadding="2" cellspacing="2" width="70%" align="center">
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<tbody>
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<tr>
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<td valign="top" bgcolor="#CCCCCC">
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<pre>
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<b>Read information from file</b>
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frs.readK(str, 255);
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<b>Don't forget to insert '\0', if necessary</b>
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str[255] = '\0';
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fmt_metaentry mt;
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<b>Setup group name. It can be "JPEG "COM" Marker", "PNG key",
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"SGI Image Name", or any other you want.</b>
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mt.group = "Group name";
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<b>Copy information</b>
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mt.data = str;
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<b>insert new metaentry</b>
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finfo.meta.push_back(mt);
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</pre>
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</td>
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</tr>
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</tbody>
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</table>
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</body>
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</html>
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