A book style is made up of a number of icons all of which are 24 x 24 pixels in size.
tlc | tlcr | te | te | tm | te | te | trcl | trcf |
tlcd | bg | bg | bg | bg | bg | bg | bg | trcd |
le | bg | bg | bg | bg | bg | bg | bg | re |
le | bg | bg | bg | bg | bg | bg | bg | re |
blcu | bg | bg | bg | bg | bg | bg | bg | brcu |
blc | blcr | be | be | bm | be | be | brcl | brc |
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There are some tags that only have bit 4 set. In these cases Thumbcat will handle multiple tags with the same interpretation and assign the most appropriate value to the applied tag. Examples are :
Applied Tag | Reference Tags | ||
Xsize | ImageWidth , PixelXDimension , the image itself. | ||
Ysize | ImageHeight , PixelYDimension , the image itself. | ||
Shutter | ShutterSpeedValue , ExposureTime | ||
Aperture | FNumber , ApertureValue | ||
Title | ImageDescription , other databases. | ||
Date | DateTime , the files datestamp. |
When storing tags in the thumbcat database the "Itemlist" values are searched and any missing values whose bit 3 is set are then interpreted from other values. For example FNnumber and ApertureValue will be read from the Exif file. The thumbcat internal tag "Aperture" will be blank and so its value will be populated with either FNnumber or ApertureValue. Only "Aperture" will be stored in the thumbcat database.
Tag Name | Tag Description | |
Title | A short description of the use of the search | |
Context | How the search is applied. It can have one of 3 values: | |
Album | search is confined to the current album | |
Catalogue | search is confined to the current catalogue | |
All | search is applied to all albums of all known catalogues | |
Match | Defines how multiple criteria results are interpreted, There are two values : | |
All | All the criteria must match for a success (Logical AND) | |
Any | At least one of the criteria must match for a success (Logical OR) | |
Criteria | Start of a criteria expression block. There can be up to 4 criteria blocks | |
Tag | The name of a tag. Part of a criteria block | |
Condition | The condition of the expression. Part of a criteria block. It can be one of : | |
= | Number or string | |
< | Number or string | |
<= | Number or string | |
> | Number or string | |
>= | Number or string | |
<> | Number or string | |
contains | String only | |
begins with | String only | |
ends with | String only | |
Value | The comparison value for the expression. Part of a criteria block. | |
Case | If Y then string comparisons are case sensitive. Part of a criteria block. | |
End | End of a criteria block |
Tag Name | Value interpretation |
Calendar_Order | If 1 then Albums will be ordered by their equivelent calendar month number e.g. January before April. |
Image_Location | The location of the top of the image tree. For a linked catalogue this will be a relative reference. For an unlinked catalogue with will be an absolute reference |
Calendars_First | If 1 then Albums with a name that matches a calendar month precede non calendar Albums in the catalogue display |
Catalogue_Location | The RISCOS filespec for the location of this catalogue. It will be a relative or absolute reference like Image_Location |
Title | The title for the catalogue |
Read_Only | Either a 1 or a 0. If 1 then the catalogue is for read-only images e.g. CDROM |
Tag Name | Value interpretation |
Image | The image name. This must be the first tag for an image |
Location | The full RISCOS filespec for the location of the image. This is either in relative notation (<2003$dir>.apicture) or absolute notation (ADFS::$.2003.apicture) depending on whether the catalogue is linked or unlinked. |
End | There is no value but the tag must be present to indicate the end of the tag data for the image |