Update the discussion of themeing in the manual, and put a note in the wps tags appen...

[kugel-rb.git] / manual / appendix / wps_tags.tex

% $Id$ %
\chapter{\label{ref:wps_tags}Theme Tags}
Themeing is discussed in detail in section \reference{ref:ConfiguringtheWPS},
what follows is a list of the available tags.

\section{Status Bar}
\begin{tagmap}
  \config{\%we} & Display Status Bar\\
  \config{\%wd} & Hide Status Bar\\
  \config{\%wi} & Display the inbuilt Status Bar in the current viewport\\
\end{tagmap}
These tags override the player setting for the display of the status bar.
They must be noted on their own line (which will not be shown in the WPS).

\section{Information from the track tags}
  \begin{tagmap}
    \config{\%ia} & Artist\\
    \config{\%ic} & Composer\\
    \config{\%iA} & Album Artist\\
    \config{\%id} & Album Name\\
    \config{\%iG} & Grouping\\
    \config{\%ig} & Genre Name\\
    \config{\%in} & Track Number\\
    \config{\%it} & Track Title\\
    \config{\%iC} & Comment\\
    \config{\%iv} & ID3 version (1.0, 1.1, 2.2, 2.3, 2.4, or empty if not an ID3 tag)\\
    \config{\%iy} & Year\\
    \config{\%ik} & Disc Number\\
  \end{tagmap}
Remember that this information is not always available, so use the 
conditionals to show alternate information in preference to assuming.

These tags, when written with a capital ``I'' (e.g. \config{\%Ia} or \config{\%Ic}),
show the information for the next song to be played.

\nopt{lcd_charcell}{
  \section{Viewports}
    \begin{tagmap}
      \nopt{lcd_non-mono}{%
        \config{\%V{\textbar}x{\textbar}y{\textbar}[width]{\textbar}%
        [height]{\textbar}[font]{\textbar}}
        & See section \ref{ref:Viewports}\\}

      \nopt{lcd_color}{\opt{lcd_non-mono}{%
        \config{\%V{\textbar}x{\textbar}y{\textbar}[width]{\textbar}%
        [height]{\textbar}[font]{\textbar}[fgshade]{\textbar}[bgshade]{\textbar}}
        & See section \ref{ref:Viewports}\\}}

      \opt{lcd_color}{%
        \config{\%V{\textbar}x{\textbar}y{\textbar}[width]{\textbar}%
        [height]{\textbar}[font]{\textbar}[fgcolour]{\textbar}[bgcolour]{\textbar}}
        & See section \ref{ref:Viewports}\\}

      \config{\%Vd'identifier'} & Display the `identifier' viewport. E.g.
      \config{\%?C{\textless}\%Vda{\textbar}\%Vdb{\textgreater}}
      will show viewport `a' if album art is found, and `b' if it isn't.\\
    \end{tagmap}
}

\section{Power Related Information}
  \begin{tagmap}
    \config{\%bl} & Numeric battery level in percents\\
                  & Can also be used in a conditional: 
                    \config{\%?bl{\textless}-1{\textbar}0{\textbar}1{\textbar}%
                    2{\textbar}\ldots{\textbar}N{\textgreater}},
                    where the value $-1$ is used when the battery level isn't
                    known (it usually is)\\
    \config{\%bv} & The battery level in volts\\
    \config{\%bt} & Estimated battery time left\\
    \config{\%bp} & ``p'' if the charger is connected (only on targets
                    that can charge batteries)\\
    \config{\%bc} & ``c'' if the unit is currently charging the battery (only on
                    targets that have software charge control or monitoring)\\
    \config{\%bs} & Remaining time of the sleep timer (if it is set)\\
  \end{tagmap}

\section{Information about the file}
  \begin{tagmap}
    \config{\%fb} & File Bitrate (in kbps)\\
    \config{\%fc} & File Codec (e.g. ``MP3'' or ``FLAC''). %
           This tag can also be used in a conditional tag, %
           \config{\%?fc{\textless}mp1\-{\textbar}mp2\-{\textbar}mp3\-%
           {\textbar}aiff\-{\textbar}wav\-{\textbar}ogg\-{\textbar}flac\-%
           {\textbar}mpc\-{\textbar}a52\-{\textbar}wavpack\-{\textbar}alac\-%
           {\textbar}aac\-{\textbar}shn\-{\textbar}sid\-{\textbar}adx\-%
           {\textbar}nsf\-{\textbar}speex\-{\textbar}spc\-{\textbar}ape\-%
           {\textbar}wma\-{\textbar}mod\-{\textbar}sap%
           {\textbar}unknown{\textgreater}}.\\
                  & The codec order is as follows: MP1, MP2, MP3, AIFF, WAV,
           Ogg Vorbis (OGG), FLAC, MPC, AC3, WavPack (WV), ALAC, AAC,
           Shorten (SHN), SID, ADX, NSF, Speex, SPC, APE, WMA, MOD, SAP.\\
    \config{\%ff} & File Frequency (in Hz)\\
    \config{\%fk} & File Frequency (in kHz)\\
    \config{\%fm} & File Name\\
    \config{\%fn} & File Name (without extension)\\
    \config{\%fp} & File Path\\
    \config{\%fs} & File Size (in Kilobytes)\\
    \config{\%fv} & ``(avg)'' if variable bit rate or empty string if constant bit rate\\
    \config{\%d1} & First directory from the end of the file path\\
    \config{\%d2} & Second directory from the end of the file path\\
    \config{\%d3} & Third directory from the end of the file path\\
  \end{tagmap}
Example for the \config{\%dN} commands: If the path is 
``/Rock/Kent/Isola/11 - 747.mp3'', \config{\%d1} is ``Isola'', 
\config{\%d2} is ``Kent'' and \config{\%d3} is ``Rock''.

These tags, when written with the first letter capitalized (e.g. \config{\%Fn} or \config{\%D2}),
produce the information for the next file to be played.

\section{Playlist/Song Info}
  \begin{tagmap}
    \config{\%pb} & Progress Bar\\
    \opt{player}{
          & This will display a one character ``cup''
            that empties as the time progresses.}
    \opt{lcd_bitmap}{
         & This will replace the entire line with a progress bar. \\
         & You can set the position, width and height of the progressbar %
           (in pixels) and load a custom image for it: %
           \config{\%pb{\textbar}image.bmp{\textbar}x{\textbar}y{\textbar}width{\textbar}height{\textbar}}} \\
    \opt{player}{%
    \config{\%pf} & Full-line progress bar \& time display\\
    }%
    \config{\%px} & Percentage Played In Song\\
    \config{\%pc} & Current Time In Song\\
    \config{\%pe} & Total Number of Playlist Entries\\
    \nopt{player}{%
    \config{\%pm} & Peak Meter. The entire line is used as %
                    volume peak meter.\\%
    }%
    \config{\%pn} & Playlist Name (without path or extension)\\
    \config{\%pp} & Playlist Position\\
    \config{\%pr} & Remaining Time In Song\\
    \config{\%ps} & ``s'' if shuffle mode is enabled\\
    \config{\%pt} & Total Track Time\\
    \config{\%pv} & Current volume (in dB). Can also be used in a conditional: \\
         & \config{\%?pv{\textless}0{\textbar}1{\textbar}2{\textbar}\ldots%
           {\textbar}N{\textgreater}}\\
         & 0 is used for mute, the last option is used for values greater than zero.\\
         \opt{lcd_bitmap}{& This can also be used like \%pb to provide a continuous scale:
         \config{\%pv{\textbar}image.bmp{\textbar}x{\textbar}y{\textbar}width{\textbar}height{\textbar}}} \\
    \config{\%pS} & Track is starting. An optional number gives how many seconds
         the tag remains true for after the start of the track. The default is
         10 seconds if no number is specified.\\
         & \config{\%pS7{\textless}in the first 7 seconds of track{\textbar}in
           the rest of the track{\textgreater}}\\
    \config{\%pE} & Track is ending. An optional number gives how many seconds
         before the end of the track the tag becomes true. The default is
         10 seconds if no number is specified.\\
         & \config{\%pE7{\textless}in the last 7 seconds of track{\textbar}in
           the rest of the track{\textgreater}}\\
    \config{\%Sp} & Current Playback Pitch\\
  \end{tagmap}

\section{Runtime Database}
  \begin{tagmap}
    \config{\%rp} & Song playcount\\
    \config{\%rr} & Song rating (0-10). This tag can also be used in a conditional tag: %
           \config{\%?rr{\textless}0{\textbar}1{\textbar}2{\textbar}3{\textbar}%
           4{\textbar}5{\textbar}6{\textbar}7{\textbar}8{\textbar}9{\textbar}%
           10{\textgreater}}\\
    \config{\%ra} & Autoscore for the song\\
  \end{tagmap}

\opt{swcodec}{
\section{Sound (DSP) settings}
  \begin{tagmap}
    \config{\%Sp} & Current playback pitch \\
  \opt{swcodec}{
    \config{\%xf} & Crossfade setting, in the order: Off, Auto Skip, Man Skip,
           Shuffle, Shuffle and Man Skip, Always\\
    \config{\%rg} & ReplayGain value in use (x.y~dB). If used as a conditional,
           Replaygain type in use: \config{\%?rg{\textless}Off{\textbar}Track%
           {\textbar}Album{\textbar}TrackShuffle{\textbar}AlbumShuffle%
           {\textbar}No tag{\textgreater}}\\
  }
  \end{tagmap}
}

% this will not include the "remote hold switch" tag for targets lacking 
% a main unit hold switch
\opt{hold_button}{
  \opt{remote_button_hold}{
    \section{Hold Switches}
      \begin{tagmap}
        \config{\%mh} & ``h'' if the main unit hold switch is on\\
        \config{\%mr} & ``r'' if the remote hold switch is on\\
      \end{tagmap}
  }
  \nopt{remote_button_hold}{
    \section{Hold Switch}
      \begin{tagmap}
        \config{\%mh} & ``h'' if the hold switch is on\\
      \end{tagmap}
  }
}

\section{Virtual LED}
  \begin{tagmap}
    \config{\%lh} & ``h'' if the \disk\ is accessed\\
  \end{tagmap}

\section{Repeat Mode}
  \begin{tagmap}
    \config{\%mm} & Repeat mode, 0-4, in the order: Off, All, One, Shuffle, A-B\\
  \end{tagmap}
Example: \config{\%?mm{\textless}Off{\textbar}All{\textbar}One{\textbar}Shuffle%
{\textbar}A-B{\textgreater}}

\section{Playback Mode}
  \begin{tagmap}
    \config{\%mp} & Play status, 0-4, in the order: Stop, Play, Pause, 
           Fast Forward, Rewind, Recording, Recording paused, FM Radio playing,
           FM Radio muted\\
  \end{tagmap}
Example: \config{\%?mp{\textless}Stop{\textbar}Play{\textbar}Pause{\textbar}%
Ffwd{\textbar}Rew{\textbar}Rec{\textbar}Rec pause{\textbar}FM{\textbar}%
FM pause{\textgreater}}

\section{Current Screen}
  \begin{tagmap}
    \config{\%cs} & The current screen, 1-5, in the order:
                Menus, WPS, Recording screen, FM Radio screen, Current Playlist screen\\
  \end{tagmap}
The tag can also be used as the switch in a conditional tag. For players without
some capabilities (e.g. having no FM radio) some values will be never yielded.

Example: \config{You are in the \%?cs{\textless}Main menu{\textbar}WPS{\textbar}%
Recording screen{\textbar}FM Radio screen{\textgreater}}

\section{List Title (\fname{.sbs} only)}
  \begin{tagmap}
    \config{\%Lt} & Title text. Should be used in a conditional so that non-list
      screens don't show a title when they shouldn't\\
    \config{\%Li} & Title icon. This uses the same order as custom icons (see
      \wikilink{CustomIcons} in the wiki) except that here \config{0} is ``no
      icon''\\
  \end{tagmap}

  This tag can be used to give custom formatting to list titles.
  Define a viewport with the font and formatting desired, and then use
  \config{\%?Lt{\textless}\%Lt{\textgreater}} to display the title within the
  viewport.  If \config{\%Lt} is present anywhere in the \fname{.sbs}, then the
  \config{\%Vi} viewport will not show the title.

\section{Changing Volume}
  \begin{tagmap}
    \config{\%mv[t]} & ``v'' if the volume is being changed\\
  \end{tagmap}

The tag produces the letter ``v'' while the volume is being changed and some
amount of time after that, i.e. after the volume button has been released. The
optional parameter \config{t} specifies that amount of time, in seconds. If it
is not specified, 1 second is assumed.

The tag can be used as the switch in a conditional tag to display different things
depending on whether the volume is being changed. It can produce neat effects
when used with conditional viewports.

Example: \config{\%?mv2.5{\textless}Volume changing{\textbar}\%pv{\textgreater}}

The example above will display the text ``Volume changing'' if the volume is
being changed and 2.5 seconds after the volume button has been released. After
that, it will display the volume value.

\section{Settings}
  \begin{tagmap}
    \config{\%St{\textbar}<setting name>{\textbar}} & The value of the Rockbox
             setting with the specified name. See \reference{ref:config_file_options}
             for the list of the available settings.\\
  \end{tagmap}

Examples:
\begin{enumerate}
\item As a simple tag: \config{\%St{\textbar}skip length{\textbar}}
\item As a conditional: \config{\%?St{\textbar}eq enabled{\textbar}{\textless}Eq is enabled{\textbar}Eq is disabled{\textgreater}}
\end{enumerate}


\opt{lcd_bitmap}{
\section{\label{ref:wps_images}Images}
  \begin{tagmap}
    \nopt{archos}{%
    \config{\%X{\textbar}filename.bmp{\textbar}}
        & Load and set a backdrop image for the WPS.
          This image must be exactly the same size as your LCD.\\
    }%
    \config{\%x{\textbar}n{\textbar}filename{\textbar}x{\textbar}y{\textbar}}
        & Load and display an image\\
        & \config{n}: image ID (a-z and A-Z) for later referencing in \config{\%xd}\\
        & \config{filename}: file name relative to \fname{/.rockbox/} and including ``.bmp''\\
        & \config{x}: x coordinate\\
        & \config{y}: y coordinate.\\
    \config{\%xl{\textbar}n{\textbar}filename{\textbar}x{\textbar}y{\textbar}[nimages{\textbar}]}
        & Preload an image for later display (useful for when your images are displayed conditionally)\\
        & \config{n}: image ID (a-z and A-Z) for later referencing in \config{\%xd}\\
        & \config{filename}: file name relative to \fname{/.rockbox/} and including ``.bmp''\\
        & \config{x}: x coordinate\\
        & \config{y}: y coordinate\\
        & \config{nimages}: (optional) number of sub-images (tiled vertically, of the same height)
          contained in the bitmap. Default is 1.\\
    \config{\%xdn[i]} & Display a preloaded image\\
        & \config{n}: image ID (a-z and A-Z) as it was specified in \config{\%x} or \config{\%xl}\\
        & \config{i}: (optional) number of the sub-image to display (a-z for 1-26 and A-Z for 27-52).
          By default the first (i.e. top most) sub-image will be used.\\
  \end{tagmap}

Examples:
\begin{enumerate}
\item Load and display the image \fname{/.rockbox/bg.bmp} with ID ``a'' at 37, 109:\\
\config{\%x{\textbar}a{\textbar}bg.bmp{\textbar}37{\textbar}109{\textbar}}
\item Load a bitmap strip containing 5 volume icon images (all the same size)
with image ID ``M'', and then reference the individual sub-images in a conditional:\\
\config{\%xl{\textbar}M{\textbar}volume.bmp{\textbar}134{\textbar}153{\textbar}5{\textbar}}\\
\config{\%?pv<\%xdMa{\textbar}\%xdMb{\textbar}\%xdMc{\textbar}\%xdMd{\textbar}%
\%xdMe>}
\end{enumerate}


\note{
  \begin{itemize}
  \item The images must be in BMP format
  \item The image tag must be on its own line
  \item The ID is case sensitive, giving 52 different ID's
  \item The size of the LCD screen for each player varies. See table below 
        for appropriate sizes of each device. The x and y coordinates must 
        repect each of the players' limits.
  \end{itemize}
}
}

\opt{albumart}{
\section{Album Art}
  \begin{tagmap}
    \config{\%Cl{\textbar}x{\textbar}y{\textbar}[[l{\textbar}c{\textbar}r]maxwidth]{\textbar}[[t{\textbar}c{\textbar}b]maxheight]{\textbar}}
        & Define the settings for albumart\\
        & \config{x}: x coordinate\\
        & \config{y}: y coordinate\\
        & \config{maxwidth}: Maximum height\\
        & \config{maxheight}: Maximum width\\
    \config{\%C}  & Display the album art as configured. This tag can also be used as a conditional.\\
  \end{tagmap}

The picture will be rescaled, preserving aspect ratio to fit the given
\config{maxwidth} and \config{maxheight}. If the aspect ratio doesn't match the
configured values, the picture will be placed according to the flags to the
\config{maxwidth} and \config{maxheight} parameters:
\begin{itemize}
  \item \config{maxwidth}:
    \begin{description}
      \item[\config{l}.] Align left
      \item[\config{c}.] Align centre (default)
      \item[\config{r}.] Align right
    \end{description}
  \item \config{maxheight}:
    \begin{description}
      \item[\config{t}.] Align top
      \item[\config{c}.] Align centre (default)
      \item[\config{b}.] Align bottom
    \end{description}
\end{itemize}

Examples:
\begin{enumerate}
  \item Load albumart at position 20,40 and display it without resizing:\\
  \config{\%Cl{\textbar}20{\textbar}40{\textbar}{\textbar}{\textbar}}
  \item Load albumart at position 0,20 and resize it to be at most 100x100
        pixels. If the image isn't square, align it to the bottom-right
        corner:\\
  \config{\%CL{\textbar}0{\textbar}20{\textbar}r100{\textbar}b100{\textbar}}
\end{enumerate}
}

\section{Alignment}
  \begin{tagmap}
    \config{\%al} & Align the text left\\
    \config{\%aL} & Align the text left, or to the right if RTL language is in use\\
    \config{\%ac} & Centre the text\\
    \config{\%ar} & Align the text right\\
    \config{\%aR} & Align the text right, or to the left if RTL language is in use\\
  \end{tagmap}
All alignment tags may be present in one line, but they need to be in the 
order left -- centre -- right. If the aligned texts overlap, they are merged.

\section{Conditional Tags}

\begin{tagmap}
\config{\%?xx{\textless}true{\textbar}false{\textgreater}}
    & If / Else: Evaluate for true or false case \\
\config{\%?xx{\textless}alt1{\textbar}alt2{\textbar}alt3{\textbar}\dots{\textbar}else{\textgreater}}
    & Enumerations: Evaluate for first / second / third / \dots / last condition \\
\end{tagmap}

\section{Subline Tags}

\begin{tagmap}
\config{\%t{\textless}time{\textgreater}}
    & Set the subline display cycle time (\%t5 or \%t3.4 formats) \\
\config{;}
    & Split items on a line into separate sublines \\
\end{tagmap}

Allows grouping of several items (sublines) onto one line, with the
display cycling round the defined sublines. See
\reference{ref:AlternatingSublines} for details. 


\section{Time and Date}
    \begin{tagmap}
    \opt{rtc}{
      \config{\%cd}          & Day of month from 01 to 31\\
      \config{\%ce}          & Zero padded day of month from 1 to 31\\
      \config{\%cf}          & A conditional for 12/24 hour format. \%?cf{\textless}24 hour stuff{\textbar}12 hour stuff{\textgreater}\\
      \config{\%cH}          & Zero padded hour from 00 to 23 (24 hour format)\\
      \config{\%ck}          & Hour from 0 to 23 (24 hour format)\\
      \config{\%cI}          & Zero padded hour from 01 to 12 (am/pm format)\\
      \config{\%cl}          & Hour from 1 to 12 (am/pm format)\\
      \config{\%cm}          & Month from 01 to 12\\
      \config{\%cM}          & Minutes\\
      \config{\%cS}          & Seconds\\
      \config{\%cy}          & 2-digit year\\
      \config{\%cY}          & 4-digit year\\
      \config{\%cP}          & Capital AM/PM\\
      \config{\%cp}          & Lowercase am/pm\\
      \config{\%ca}          & Weekday name\\
      \config{\%cb}          & Month name\\
      \config{\%cu}          & Day of week from 1 to 7, 1 is Monday\\
      \config{\%cw}          & Day of week from 0 to 6, 0 is Sunday\\
    }
      \config{\%cc}          & Check for presence of the clock hardware\\
    \end{tagmap}
The \%cc tag returns ``c'' if the necessary hardware is present and can also be
used as a conditional. This can be very useful for designing a WPS that works on
multiple targets, some with and some without a clock. By using this tag as a
conditional it is possible to display current date and time on those targets that
support this
\opt{rtc}{ (like the \playertype)},
or alternate information on those that do not
\nopt{rtc}{ (like the \playertype)}%
.

Example:
\config{\%?cc{\textless}\%cH:\%cM{\textbar}No clock detected{\textgreater}}

\section{Text Translation}
  \begin{tagmap}
    \config{\%Sx{\textbar}{\textless}English{\textgreater}{\textbar}}
    & Display the translation of ``English'' in the current language\\
  \end{tagmap}
  
  \begin{itemize}
    \item ``English'' must be a phrase used in the language file.
    \item It should match the \config{Source:} line in the language file.
  \end{itemize}

  \note{checkwps cannot verify that the string is correct, so please check on
    either the simulator or on target.}


\opt{touchscreen}{
  \section{Touchscreen Areas (WPS only)}
    \begin{tagmap}
      \config{\%T{\textbar}x{\textbar}y{\textbar}width{\textbar}height%
      {\textbar}action{\textbar}}
      & Invoke the action specified when the user presses in the defined
      touchscreen area.\\
    \end{tagmap}
  If the action starts with \& then the area must be held. Possible actions are:

  \begin{description}
    \item[play] -- Play/pause playback.
    \item[stop] -- Stop playback and exit the WPS.
    \item[prev] -- Previous track.
    \item[next] -- Next track.
    \item[ffwd] -- Seek forwards in the track.
    \item[rwd] -- Seek backwards in the track.
    \item[menu] -- Go to the main menu.
    \item[browse] -- Go back to the file browser or database.
    \item[shuffle] -- Toggle shuffle mode.
    \item[repmode] -- Cycle through the repeat modes.
    \item[quickscreen] -- Go to the quickscreen.
    \item[contextmenu] -- Open the context menu.
    \item[playlist] -- Go to the playlist viewer.
    \item[progressbar] -- Seek to the appropriate position in the track based on the touch.
    \item[volume] -- Set the volume to the appropriate level based on the touch.
    \item[pitch] -- Open the pitchscreen.
    \item[voldown] -- Decrease the volume by one step.
    \item[volup] -- Increase the volume by one step.
  \end{description}

  \section{Last Touchscreen Press (WPS only)}
    \begin{tagmap}
      \config{\%Tl} & Indicates that the touchscreen is pressed.\\
    \end{tagmap}
  This tag can be used to display text or images or a viewport when the
  touchscreen is pressed (like an On Screen Display). If you put a number
  straight after \%Tl it will be used as a timeout in seconds
  (e.g \%Tl2.5 will give a 2.5 second timeout) between the touchscreen press
  being released and the tag going false. If no number is specified it will
  use a 1 second timeout.  It can also be used as a conditional, and can be
  used with conditional viewports.
}

\section{Other Tags}
\begin{tagmap}
  \config{\%\%}          & The character `\%'\\
  \config{\%{\textless}} & The character `{\textless}'\\
  \config{\%{\textbar}}  & The character `{\textbar}'\\
  \config{\%{\textgreater}} & The character `{\textgreater}'\\
  \config{\%;}           & The character `;'\\
  \config{\%s}           & Indicate that the line should scroll. Can occur 
                           anywhere in a line (given that the text is 
                           displayed; see conditionals above). You can specify 
                           up to ten scrolling lines. Scrolling lines can not 
                           contain dynamic content such as timers, peak meters 
                           or progress bars.\\
\end{tagmap}