/** \page development Developer Information This chapter describes FLTK development and documentation. \note documentation with doxygen will be described here.

Example

\note In the following code example(s) "*" will be replaced by "#" as a temporary solution. \code /## \file Fl_Clock, Fl_Clock_Output widgets . #/ /## \class Fl_Clock_Output \brief This widget can be used to display a program-supplied time. The time shown on the clock is not updated. To display the current time, use Fl_Clock instead. \image html clock.gif \image latex clock.eps "" width=10cm \image html round_clock.gif \image latex clock.eps "" width=10cm \image html round_clock.eps "" width=10cm #/ /## Returns the displayed time. Returns the time in seconds since the UNIX epoch (January 1, 1970). \see value(ulong) #/ ulong value() const {return value_;} /## Set the displayed time. Set the time in seconds since the UNIX epoch (January 1, 1970). \param[in] v seconds since epoch \see value() #/ void Fl_Clock_Output::value(ulong v) { [...] } /## Create an Fl_Clock widget using the given position, size, and label string. The default boxtype is \c FL_NO_BOX. \param[in] X, Y, W, H position and size of the widget \param[in] L widget label, default is no label #/ Fl_Clock::Fl_Clock(int X, int Y, int W, int H, const char #L) : Fl_Clock_Output(X, Y, W, H, L) {} /## Create an Fl_Clock widget using the given boxtype, position, size, and label string. \param[in] t boxtype \param[in] X, Y, W, H position and size of the widget \param[in] L widget label, default is no label #/ Fl_Clock::Fl_Clock(uchar t, int X, int Y, int W, int H, const char #L) : Fl_Clock_Output(X, Y, W, H, L) { type(t); box(t==FL_ROUND_CLOCK ? FL_NO_BOX : FL_UP_BOX); } \endcode \note From Duncan: (will be removed later, just for now as a reminder) 5. I've just added comments for the fl_color_chooser() functions, and in order to keep them and the general Function Reference information for them together, I created a new doxygen group, and used \\ingroup in the three comment blocks. This creates a new Modules page (which may not be what we want) with links to it from the File Members and Fl_Color_Chooser.H pages. It needs a bit more experimentation on my part unless someone already knows how this should be handled. (Maybe we can add it to a functions.dox file that defines a functions group and do that for all of the function documentation?) \b Update: the trick is not to create duplicate entries in a new group, but to move the function information into the doxygen comments for the class, and use the navigation links provided. Simply using \\relatesalso as the first doxygen command in the function's comment puts it in the appropriate place. There is no need to have \\defgroup and \\ingroup as well, and indeed they don't work. So, to summarize: \code Gizmo.H /## \class Gizmo A gizmo that does everything #/ class Gizmo { etc }; extern int popup_gizmo(...); Gizmo.cxx: /## \relatesalso Gizmo Pops up a gizmo dialog with a Gizmo in it #/ int popup_gizmo(...); \endcode

Example comment:

You can use HTML comment statements to embed comments in doxygen comment blocks. These comments will not be visible in the generated document. The following text is a developer comment. This will be visible again. \code The following text is a developer comment. This will be visible again. \endcode

Different Headlines:

\code

Headline in big text (H1)

Headline in big text (H2)

Headline in big text (H3)

Headline in big text (H4)

\endcode

Headline in big text (H1)

Headline in big text (H2)

Headline in big text (H3)

Headline in big text (H4)

\section development_non-ascii Non-ASCII characters if you came here from below: back to \ref development_links \code Doxygen understands many HTML quoting characters like ", ü, ç, Ç, but not all HTML quoting characters. \endcode This will appear in the document: Doxygen understands many HTML quoting characters like ", ü, ç, Ç, but not all HTML quoting characters. For further informations about quoting see \b http://www.stack.nl/~dimitri/doxygen/htmlcmds.html

Example with UTF-8 encoded text

\code

Assuming that the following source code was written on MS Windows, this example will output the correct label on OS X and X11 as well. Without the conversion call, the label on OS X would read Fahrvergn¸gen with a deformed umlaut u ("cedille", html "¸"). \#code btn = new Fl_Button(10, 10, 300, 25); btn->copy_label(fl_latin1_to_local("Fahrvergnügen")); \#endcode \note If your application uses characters that are not part of both encodings, or it will be used in areas that commonly use different code pages, you might consider upgrading to FLTK 2 which supports UTF-8 encoding. \todo This is an example todo entry, please ignore ! \endcode This will appear in the document:

Assuming that the following source code was written on MS Windows, this example will output the correct label on OS X and X11 as well. Without the conversion call, the label on OS X would read Fahrvergn¸gen with a deformed umlaut u ("cedille", html "¸"). \#code btn = new Fl_Button(10, 10, 300, 25); btn->copy_label(fl_latin1_to_local("Fahrvergnügen")); \#endcode \note If your application uses characters that are not part of both encodings, or it will be used in areas that commonly use different code pages, you might consider upgrading to FLTK 2 which supports UTF-8 encoding. \todo This is an example todo entry, please ignore ! \section development_structure Document Structure \li \b \\page creates a named page \li \b \\section creates a named section within that page \li \b \\subsection creates a named subsection within the current section \li \b \\subsubsection creates a named subsubsection within the current subsection All these statements take a "name" as their first argument, and a title as their second argument. The title can contain spaces. The page, section, and subsection titles are formatted in blue color and a size like \b "

", \b "

", and \b "

", and \b "

", respectively. By FLTK documentation convention, a file like this one with a doxygen documentation chapter has the name ".dox". The \b \\page statement at the top of the page is "\page This is the title". Sections within a documentation page must be called \b "_
", where \b "" is the name part of the file, and \b "
" is a unique section name within the page that can be referenced in links. The same for subsections and subsubsections. These doxygen page and section commands work only in special documentation chapters, not within normal source or header documentation blocks. However, links \b from normal (e.g. class) documentation \b to documentation sections \b do \b work. This page has \code \page development I - Developer Information \endcode at its top. This section is \code \section development_structure Document structure \endcode The following section is \code \section development_links Creating Links \endcode \section development_links Creating Links Links to other documents and external links can be embedded with \li normal HTML links \li HTML links without markup - doxygen creates "http://..." links automatically \li links to other doxygen chapters with the \\ref statments \li links to named sections within the same or other doxygen chapters, if they are defined there with a \\section statement \code see chapter \ref unicode creates a link to the named chapter unicode that has been created with a \subpage statement. see chapter 5 creates a link to a named html anchor "character_encoding" within the same file. For further informations about quoting see http://www.stack.nl/~dimitri/doxygen/htmlcmds.html Bold link text: you can see the online documentation of FLTK 1.3 at \b http://www.fltk.org/doc-1.3/index.html see section \ref development_non-ascii \endcode appears as: see chapter \ref unicode creates a link to the named chapter unicode that has been created with a \\subpage statement. see chapter 5 creates a link to a named html anchor "character_encoding" within the same file. For further informations about quoting see http://www.stack.nl/~dimitri/doxygen/htmlcmds.html Bold link text: you can see the online documentation of FLTK 1.3 at \b http://www.fltk.org/doc-1.3/index.html see section \ref development_non-ascii \section development_old-links Changing Old Links Old HTML links and anchors in text documentation pages should be changed as follows: \code

Fl::event_*() methods

becomes: \section events_event_xxx Fl::event_*() methods \endcode The additional HTML "" statement is temporary needed, until all links (references) are modified, then: \code

Fl::event_*() methods

becomes: \section events_event_xxx Fl::event_*() methods \endcode The "\section" statement can also be a "\subsection" or "\subsubsection" statement. The references (in this example from index.dox) are changed as follows: \code \subpage events becomes: \subpage events \li \ref events_event_xxx \li \ref events_propagation \endcode \section development_paragraphs Paragraph Layout There is no real need to use HTML \ and \ tags within the text to tell doxygen to start or stop a paragraph. In most cases, when doxygen encounters a blank line or some, but not all, \b \\commands in the text it knows that it as reached the start or end of a paragraph. Doxygen also offers the \b \\par command for special paragraph handling. It can be used to provide a paragraph title and also to indent a paragraph. Unfortunately \b \\par won't do what you expect if you want to have doxygen links and sometimes html tags don't work either. \verbatim \par Normal Paragraph with title This paragraph will have a title, but because there is a blank line between the \par and the text, it will have the normal layout. \par Indented Paragraph with title This paragraph will also have a title, but because there is no blank line between the \par and the text, it will be indented. \par It is also possible to have an indented paragraph without title. This is how you indent subsequent paragraphs. \par No link to Fl_Widget::draw() Note that the paragraph title is treated as plain text. Doxygen type links will not work. HTML characters and tags may or may not work. Fl_Widget::draw() links and "html" tags work
\par Use a single line ending with
for complicated paragraph titles. \endverbatim The above code produces the following paragraphs: \par Normal Paragraph with title This paragraph will have a title, but because there is a blank line between the \\par and the text, it will have the normal layout. \par Indented Paragraph with title This paragraph will also have a title, but because there is no blank line between the \\par and the text, it will be indented. \par It is also possible to have an indented paragraph without title. This is how you indent subsequent paragraphs. \par No link to Fl_Widget::draw() Note that the paragraph title is treated as plain text. Doxygen type links will not work. HTML characters and tags may or may not work. Fl_Widget::draw() links and "html" tags work
\par Use a single line ending with \ for complicated paragraph titles. \section development_html_footer Hack for missing "tiny.gif" file \todo *HACK* : include image file for footer. Doxygen does not include the file "tiny.gif" from "html_footer" in its output html dir. Find out, how this can be done, or avoid using an image in the HTML footer. \image html tiny.gif \image latex tiny.eps "" width=2cm \section development_navigation_test Navigation Elements Each introduction (tutorial) page ends with navigation elements. These elements must only be included in the html documentation, therefore they must be separated with \\htmlonly and \\endhtmlonly. Example navigation links: \verbatim \htmlonly
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