X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c92ddcd2e159d7b1b241fb289f03d58d57528e7a..e2d5abbf527ae760cf65467bf94b914ba9974657:/docs/latex/wx/font.tex?ds=sidebyside diff --git a/docs/latex/wx/font.tex b/docs/latex/wx/font.tex index 8c22aa4396..f456343766 100644 --- a/docs/latex/wx/font.tex +++ b/docs/latex/wx/font.tex @@ -4,6 +4,13 @@ A font is an object which determines the appearance of text. Fonts are used for drawing text to a device context, and setting the appearance of a window's text. +This class uses \helpref{reference counting and copy-on-write}{trefcount} +internally so that assignments between two instances of this class are very +cheap. You can therefore use actual objects instead of pointers without +efficiency problems. If an instance of this class is changed it will create +its own data internally so that other instances, which previously shared the +data using the reference counting, are not affected. + You can retrieve the current system font settings with \helpref{wxSystemSettings}{wxsystemsettings}. \helpref{wxSystemSettings}{wxsystemsettings} @@ -17,9 +24,44 @@ You can retrieve the current system font settings with \helpref{wxSystemSettings +\wxheading{Library} + +\helpref{wxCore}{librarieslist} + \wxheading{Constants} +The possible values for the \arg{family} parameter of \helpref{wxFont +constructor}{wxfontctor} are (the old names are for compatibility only): + +\begin{verbatim} +enum wxFontFamily +{ + wxFONTFAMILY_DEFAULT = wxDEFAULT, + wxFONTFAMILY_DECORATIVE = wxDECORATIVE, + wxFONTFAMILY_ROMAN = wxROMAN, + wxFONTFAMILY_SCRIPT = wxSCRIPT, + wxFONTFAMILY_SWISS = wxSWISS, + wxFONTFAMILY_MODERN = wxMODERN, + wxFONTFAMILY_TELETYPE = wxTELETYPE, + wxFONTFAMILY_MAX +}; +\end{verbatim} + +The possible values for the \arg{weight} parameter are (the old names +are for compatibility only): + +\begin{verbatim} +enum wxFontWeight +{ + wxFONTWEIGHT_NORMAL = wxNORMAL, + wxFONTWEIGHT_LIGHT = wxLIGHT, + wxFONTWEIGHT_BOLD = wxBOLD, + wxFONTWEIGHT_MAX +}; +\end{verbatim} + The font flags which can be used during the font creation are: + \begin{verbatim} enum { @@ -45,6 +87,7 @@ enum \end{verbatim} The known font encodings are: + \begin{verbatim} enum wxFontEncoding { @@ -126,50 +169,71 @@ wxSWISS\_FONT} \latexignore{\rtfignore{\wxheading{Members}}} -\membersection{wxFont::wxFont}\label{wxfontconstr} + +\membersection{wxFont::wxFont}\label{wxfontctor} \func{}{wxFont}{\void} Default constructor. -\func{}{wxFont}{\param{int}{ pointSize}, \param{int}{ family}, \param{int}{ style}, \param{int}{ weight}, +\func{}{wxFont}{\param{const wxFont\&}{ font}} + +Copy constructor, uses \helpref{reference counting}{trefcount}. + +\func{}{wxFont}{\param{int}{ pointSize}, \param{wxFontFamily}{ family}, \param{int}{ style}, \param{wxFontWeight}{ weight}, + \param{const bool}{ underline = false}, \param{const wxString\& }{faceName = ""}, + \param{wxFontEncoding }{encoding = wxFONTENCODING\_DEFAULT}} + +\func{}{wxFont}{\param{const wxSize\&}{ pixelSize}, \param{wxFontFamily}{ family}, \param{int}{ style}, \param{wxFontWeight}{ weight}, \param{const bool}{ underline = false}, \param{const wxString\& }{faceName = ""}, \param{wxFontEncoding }{encoding = wxFONTENCODING\_DEFAULT}} -Creates a font object (see \helpref{font encoding -overview}{wxfontencodingoverview} for the meaning of the last parameter). +Creates a font object with the specified attributes. \wxheading{Parameters} \docparam{pointSize}{Size in points.} +\docparam{pixelSize}{Size in pixels: this is directly supported only under MSW +currently where this constructor can be used directly, under other platforms a +font with the closest size to the given one is found using binary search and +the static \helpref{New}{wxfontnew} method must be used.} + \docparam{family}{Font family, a generic way of referring to fonts without specifying actual facename. One of: \twocolwidtha{5cm} \begin{twocollist}\itemsep=0pt -\twocolitem{{\bf wxDEFAULT}}{Chooses a default font.} -\twocolitem{{\bf wxDECORATIVE}}{A decorative font.} -\twocolitem{{\bf wxROMAN}}{A formal, serif font.} -\twocolitem{{\bf wxSCRIPT}}{A handwriting font.} -\twocolitem{{\bf wxSWISS}}{A sans-serif font.} -\twocolitem{{\bf wxMODERN}}{A fixed pitch font.} +\twocolitem{{\bf wxFONTFAMILY\_DEFAULT}}{Chooses a default font.} +\twocolitem{{\bf wxFONTFAMILY\_DECORATIVE}}{A decorative font.} +\twocolitem{{\bf wxFONTFAMILY\_ROMAN}}{A formal, serif font.} +\twocolitem{{\bf wxFONTFAMILY\_SCRIPT}}{A handwriting font.} +\twocolitem{{\bf wxFONTFAMILY\_SWISS}}{A sans-serif font.} +\twocolitem{{\bf wxFONTFAMILY\_MODERN}}{A fixed pitch font.} +\twocolitem{{\bf wxFONTFAMILY\_TELETYPE}}{A teletype font.} \end{twocollist}} -\docparam{style}{One of {\bf wxNORMAL}, {\bf wxSLANT} and {\bf wxITALIC}.} +\docparam{style}{One of {\bf wxFONTSTYLE\_NORMAL}, {\bf wxFONTSTYLE\_SLANT} and {\bf wxFONTSTYLE\_ITALIC}.} -\docparam{weight}{One of {\bf wxNORMAL}, {\bf wxLIGHT} and {\bf wxBOLD}.} +\docparam{weight}{Font weight, sometimes also referred to as font boldness. One of: + +\twocolwidtha{5cm} +\begin{twocollist}\itemsep=0pt +\twocolitem{{\bf wxFONTWEIGHT\_NORMAL}}{Normal font.} +\twocolitem{{\bf wxFONTWEIGHT\_LIGHT}}{Light font.} +\twocolitem{{\bf wxFONTWEIGHT\_BOLD}}{Bold font.} +\end{twocollist}} \docparam{underline}{The value can be true or false. At present this has an effect on Windows and Motif 2.x only.} -\docparam{faceName}{An optional string specifying the actual typeface to be used. If the empty string, -a default typeface will chosen based on the family.} +\docparam{faceName}{An optional string specifying the actual typeface to be used. If it is an empty string, +a default typeface will be chosen based on the family.} \docparam{encoding}{An encoding which may be one of \twocolwidtha{5cm} \begin{twocollist}\itemsep=0pt \twocolitem{{\bf wxFONTENCODING\_SYSTEM}}{Default system encoding.} \twocolitem{{\bf wxFONTENCODING\_DEFAULT}}{Default application encoding: this -is the encoding set by calls to +is the encoding set by calls to \helpref{SetDefaultEncoding}{wxfontsetdefaultencoding} and which may be set to, say, KOI8 to create all fonts by default with KOI8 encoding. Initially, the default application encoding is the same as default system encoding.} @@ -177,7 +241,8 @@ default application encoding is the same as default system encoding.} \twocolitem{{\bf wxFONTENCODING\_KOI8}}{The standard Russian encoding for Internet.} \twocolitem{{\bf wxFONTENCODING\_CP1250...1252}}{Windows encodings similar to ISO8859 (but not identical).} \end{twocollist} -If the specified encoding isn't available, no font is created. +If the specified encoding isn't available, no font is created +(see also \helpref{font encoding overview}{wxfontencodingoverview}). } \wxheading{Remarks} @@ -188,29 +253,30 @@ Under Windows, only scalable TrueType fonts are used. See also \helpref{wxDC::SetFont}{wxdcsetfont}, \helpref{wxDC::DrawText}{wxdcdrawtext} and \helpref{wxDC::GetTextExtent}{wxdcgettextextent}. -\membersection{wxFont::\destruct{wxFont}} + +\membersection{wxFont::\destruct{wxFont}}\label{wxfontdtor} \func{}{\destruct{wxFont}}{\void} Destructor. +See \helpref{reference-counted object destruction}{refcountdestruct} for more info. \wxheading{Remarks} -The destructor may not delete the underlying font object of the native windowing -system, since wxFont uses a reference counting system for efficiency. - Although all remaining fonts are deleted when the application exits, the application should try to clean up all fonts itself. This is because -wxWindows cannot know if a pointer to the font object is stored in an +wxWidgets cannot know if a pointer to the font object is stored in an application data structure, and there is a risk of double deletion. + \membersection{wxFont::IsFixedWidth}\label{wxfontisfixedwidth} \constfunc{bool}{IsFixedWidth}{\void} -Returns {\tt true} if the font is a fixed width (or monospaced) font, +Returns {\tt true} if the font is a fixed width (or monospaced) font, {\tt false} if it is a proportional one or font is invalid. + \membersection{wxFont::GetDefaultEncoding}\label{wxfontgetdefaultencoding} \func{static wxFontEncoding}{GetDefaultEncoding}{\void} @@ -219,9 +285,10 @@ Returns the current application's default encoding. \wxheading{See also} -\helpref{Font encoding overview}{wxfontencodingoverview}, +\helpref{Font encoding overview}{wxfontencodingoverview}, \helpref{SetDefaultEncoding}{wxfontsetdefaultencoding} + \membersection{wxFont::GetFaceName}\label{wxfontgetfacename} \constfunc{wxString}{GetFaceName}{\void} @@ -233,27 +300,44 @@ typeface information. \helpref{wxFont::SetFaceName}{wxfontsetfacename} + \membersection{wxFont::GetFamily}\label{wxfontgetfamily} -\constfunc{int}{GetFamily}{\void} +\constfunc{wxFontFamily}{GetFamily}{\void} -Gets the font family. See \helpref{wxFont::wxFont}{wxfontconstr} for a list of valid +Gets the font family. See \helpref{wxFont::SetFamily}{wxfontsetfamily} for a list of valid family identifiers. \wxheading{See also} \helpref{wxFont::SetFamily}{wxfontsetfamily} + \membersection{wxFont::GetNativeFontInfoDesc}\label{wxfontgetnativefontinfodesc} \constfunc{wxString}{GetNativeFontInfoDesc}{\void} -Returns the platform-dependent string completely describing this font or an -empty string if the font wasn't constructed using the native font description. +Returns the platform-dependent string completely describing this font. +Returned string is always non-empty. +Note that the returned string is not meant to be shown or edited by the user: a typical +use of this function is for serializing in string-form a wxFont object. \wxheading{See also} -\helpref{wxFont::SetNativeFontInfo}{wxfontsetnativefontinfo} +\helpref{wxFont::SetNativeFontInfo}{wxfontsetnativefontinfo},\helpref{wxFont::GetNativeFontInfoUserDesc}{wxfontgetnativefontinfouserdesc} + + +\membersection{wxFont::GetNativeFontInfoUserDesc}\label{wxfontgetnativefontinfouserdesc} + +\func{wxString}{GetNativeFontInfoUserDesc}{\void} + +Returns a user-friendly string for this font object. Returned string is always non-empty. +Some examples of the formats of returned strings (which are platform-dependent) are in \helpref{SetNativeFontInfoUserDesc}{wxfontsetnativefontinfouserdesc}. + +\wxheading{See also} + +\helpref{wxFont::GetNativeFontInfoDesc}{wxfontgetnativefontinfodesc} + \membersection{wxFont::GetPointSize}\label{wxfontgetpointsize} @@ -265,17 +349,19 @@ Gets the point size. \helpref{wxFont::SetPointSize}{wxfontsetpointsize} + \membersection{wxFont::GetStyle}\label{wxfontgetstyle} \constfunc{int}{GetStyle}{\void} -Gets the font style. See \helpref{wxFont::wxFont}{wxfontconstr} for a list of valid +Gets the font style. See \helpref{wxFont::wxFont}{wxfontctor} for a list of valid styles. \wxheading{See also} \helpref{wxFont::SetStyle}{wxfontsetstyle} + \membersection{wxFont::GetUnderlined}\label{wxfontgetunderlined} \constfunc{bool}{GetUnderlined}{\void} @@ -286,23 +372,51 @@ Returns true if the font is underlined, false otherwise. \helpref{wxFont::SetUnderlined}{wxfontsetunderlined} + \membersection{wxFont::GetWeight}\label{wxfontgetweight} -\constfunc{int}{GetWeight}{\void} +\constfunc{wxFontWeight}{GetWeight}{\void} -Gets the font weight. See \helpref{wxFont::wxFont}{wxfontconstr} for a list of valid +Gets the font weight. See \helpref{wxFont::wxFont}{wxfontctor} for a list of valid weight identifiers. \wxheading{See also} \helpref{wxFont::SetWeight}{wxfontsetweight} -\membersection{wxFont::Ok}\label{wxfontok} -\constfunc{bool}{Ok}{\void} +\membersection{wxFont::New}\label{wxfontnew} + +\func{static wxFont *}{New}{\param{int}{ pointSize}, \param{wxFontFamily}{ family}, \param{int}{ style}, \param{wxFontWeight}{ weight}, + \param{const bool}{ underline = false}, \param{const wxString\& }{faceName = ""}, + \param{wxFontEncoding }{encoding = wxFONTENCODING\_DEFAULT}} + +\func{static wxFont *}{New}{\param{int}{ pointSize}, \param{wxFontFamily}{ family}, + \param{int}{ flags = \texttt{wxFONTFLAG\_DEFAULT}}, \param{const wxString\& }{faceName = ""}, + \param{wxFontEncoding }{encoding = wxFONTENCODING\_DEFAULT}} + +\func{static wxFont *}{New}{\param{const wxSize\&}{ pixelSize}, \param{wxFontFamily}{ family}, \param{int}{ style}, \param{wxFontWeight}{ weight}, + \param{const bool}{ underline = false}, \param{const wxString\& }{faceName = ""}, + \param{wxFontEncoding }{encoding = wxFONTENCODING\_DEFAULT}} + +\func{static wxFont *}{New}{\param{const wxSize\&}{ pixelSize}, \param{wxFontFamily}{ family}, + \param{int}{ flags = \texttt{wxFONTFLAG\_DEFAULT}}, \param{const wxString\& }{faceName = ""}, + \param{wxFontEncoding }{encoding = wxFONTENCODING\_DEFAULT}} + +These functions take the same parameters as \helpref{wxFont +constructor}{wxfontctor} and return a new font object allocated on the heap. + +Using \texttt{New()} is currently the only way to directly create a font with +the given size in pixels on platforms other than wxMSW. + + +\membersection{wxFont::IsOk}\label{wxfontisok} + +\constfunc{bool}{IsOk}{\void} Returns {\tt true} if this object is a valid font, {\tt false} otherwise. + \membersection{wxFont::SetDefaultEncoding}\label{wxfontsetdefaultencoding} \func{static void}{SetDefaultEncoding}{\param{wxFontEncoding }{encoding}} @@ -311,14 +425,16 @@ Sets the default font encoding. \wxheading{See also} -\helpref{Font encoding overview}{wxfontencodingoverview}, +\helpref{Font encoding overview}{wxfontencodingoverview}, \helpref{GetDefaultEncoding}{wxfontgetdefaultencoding} + \membersection{wxFont::SetFaceName}\label{wxfontsetfacename} -\func{void}{SetFaceName}{\param{const wxString\& }{faceName}} +\func{bool}{SetFaceName}{\param{const wxString\& }{faceName}} Sets the facename for the font. +Returns \true if the given face name exists; \false otherwise. \wxheading{Parameters} @@ -328,16 +444,17 @@ Sets the facename for the font. To avoid portability problems, don't rely on a specific face, but specify the font family instead or as well. A suitable font will be found on the end-user's system. If both the -family and the facename are specified, wxWindows will first search for the specific face, +family and the facename are specified, wxWidgets will first search for the specific face, and then for a font belonging to the same family. \wxheading{See also} \helpref{wxFont::GetFaceName}{wxfontgetfacename}, \helpref{wxFont::SetFamily}{wxfontsetfamily} + \membersection{wxFont::SetFamily}\label{wxfontsetfamily} -\func{void}{SetFamily}{\param{int}{ family}} +\func{void}{SetFamily}{\param{wxFontFamily}{ family}} Sets the font family. @@ -347,26 +464,61 @@ Sets the font family. \twocolwidtha{5cm} \begin{twocollist}\itemsep=0pt -\twocolitem{{\bf wxDEFAULT}}{Chooses a default font.} -\twocolitem{{\bf wxDECORATIVE}}{A decorative font.} -\twocolitem{{\bf wxROMAN}}{A formal, serif font.} -\twocolitem{{\bf wxSCRIPT}}{A handwriting font.} -\twocolitem{{\bf wxSWISS}}{A sans-serif font.} -\twocolitem{{\bf wxMODERN}}{A fixed pitch font.} +\twocolitem{{\bf wxFONTFAMILY\_DEFAULT}}{Chooses a default font.} +\twocolitem{{\bf wxFONTFAMILY\_DECORATIVE}}{A decorative font.} +\twocolitem{{\bf wxFONTFAMILY\_ROMAN}}{A formal, serif font.} +\twocolitem{{\bf wxFONTFAMILY\_SCRIPT}}{A handwriting font.} +\twocolitem{{\bf wxFONTFAMILY\_SWISS}}{A sans-serif font.} +\twocolitem{{\bf wxFONTFAMILY\_MODERN}}{A fixed pitch font.} +\twocolitem{{\bf wxFONTFAMILY\_TELETYPE}}{A teletype font.} \end{twocollist}} \wxheading{See also} \helpref{wxFont::GetFamily}{wxfontgetfamily}, \helpref{wxFont::SetFaceName}{wxfontsetfacename} + \membersection{wxFont::SetNativeFontInfo}\label{wxfontsetnativefontinfo} -\func{void}{SetNativeFontInfo}{\param{const wxString\& }{info}} +\func{bool}{SetNativeFontInfo}{\param{const wxString\& }{info}} -Creates the font corresponding to the given native font description string -which must have been previously returned by +Creates the font corresponding to the given native font description string and returns \true if +the creation was successful. +which must have been previously returned by \helpref{GetNativeFontInfoDesc}{wxfontgetnativefontinfodesc}. If the string is -invalid, font is unchanged. +invalid, font is unchanged. This function is typically used for de-serializing a wxFont +object previously saved in a string-form. + +\wxheading{See also} + +\helpref{wxFont::SetNativeFontInfoUserDesc}{wxfontsetnativefontinfouserdesc} + + +\membersection{wxFont::SetNativeFontInfoUserDesc}\label{wxfontsetnativefontinfouserdesc} + +\func{bool}{SetNativeFontInfoUserDesc}{\param{const wxString\& }{info}} + +Creates the font corresponding to the given native font description string and returns \true if +the creation was successful. +Unlike \helpref{SetNativeFontInfo}{wxfontsetnativefontinfo}, this function accepts +strings which are user-friendly. +Examples of accepted string formats are: + +\twocolwidtha{15cm} +\begin{twocollist}\itemsep=0pt +\twocolitem{Generic syntax}{Example} +\twocolitem{on {\bf wxGTK2}: {\tt $[FACE-NAME]$ $[bold]$ $[oblique|italic]$ $[POINTSIZE]$}}{Monospace bold 10} +\twocolitem{on {\bf wxMSW}: {\tt $[light|bold]$ $[italic]$ $[FACE-NAME]$ $[POINTSIZE]$ $[ENCODING]$}}{Tahoma 10 WINDOWS-1252} +\twocolitem{on {\bf wxMac}: FIXME}{FIXME} +\end{twocollist} + +For more detailed information about the allowed syntaxes you can look at the documentation of the native API used for font-rendering (e.g. \urlref{pango\_font\_description\_from\_string}{http://developer.gnome.org/doc/API/2.0/pango/pango-Fonts.html\#pango-font-description-from-string}). + +\wxheading{See also} + +\helpref{wxFont::SetNativeFontInfo}{wxfontsetnativefontinfo} + + \membersection{wxFont::SetPointSize}\label{wxfontsetpointsize} @@ -382,6 +534,7 @@ Sets the point size. \helpref{wxFont::GetPointSize}{wxfontgetpointsize} + \membersection{wxFont::SetStyle}\label{wxfontsetstyle} \func{void}{SetStyle}{\param{int}{ style}} @@ -390,12 +543,13 @@ Sets the font style. \wxheading{Parameters} -\docparam{style}{One of {\bf wxNORMAL}, {\bf wxSLANT} and {\bf wxITALIC}.} +\docparam{style}{One of {\bf wxFONTSTYLE\_NORMAL}, {\bf wxFONTSTYLE\_SLANT} and {\bf wxFONTSTYLE\_ITALIC}.} \wxheading{See also} \helpref{wxFont::GetStyle}{wxfontgetstyle} + \membersection{wxFont::SetUnderlined}\label{wxfontsetunderlined} \func{void}{SetUnderlined}{\param{const bool}{ underlined}} @@ -410,40 +564,48 @@ Sets underlining. \helpref{wxFont::GetUnderlined}{wxfontgetunderlined} + \membersection{wxFont::SetWeight}\label{wxfontsetweight} -\func{void}{SetWeight}{\param{int}{ weight}} +\func{void}{SetWeight}{\param{wxFontWeight}{ weight}} Sets the font weight. \wxheading{Parameters} -\docparam{weight}{One of {\bf wxNORMAL}, {\bf wxLIGHT} and {\bf wxBOLD}.} +\docparam{weight}{One of: + +\twocolwidtha{5cm} +\begin{twocollist}\itemsep=0pt +\twocolitem{{\bf wxFONTWEIGHT\_NORMAL}}{Normal font.} +\twocolitem{{\bf wxFONTWEIGHT\_LIGHT}}{Light font.} +\twocolitem{{\bf wxFONTWEIGHT\_BOLD}}{Bold font.} +\end{twocollist}} \wxheading{See also} \helpref{wxFont::GetWeight}{wxfontgetweight} + \membersection{wxFont::operator $=$}\label{wxfontassignment} \func{wxFont\&}{operator $=$}{\param{const wxFont\& }{font}} -Assignment operator, using reference counting. Returns a reference -to `this'. +Assignment operator, using \helpref{reference counting}{trefcount}. + \membersection{wxFont::operator $==$}\label{wxfontequals} \func{bool}{operator $==$}{\param{const wxFont\& }{font}} -Equality operator. Two fonts are equal if they contain pointers -to the same underlying font data. It does not compare each attribute, -so two indefontdently-created fonts using the same parameters will -fail the test. +Equality operator. +See \helpref{reference-counted object comparison}{refcountequality} for more info. + \membersection{wxFont::operator $!=$}\label{wxfontnotequals} \func{bool}{operator $!=$}{\param{const wxFont\& }{font}} -Inequality operator. Two fonts are not equal if they contain pointers -to different underlying font data. It does not compare each attribute. +Inequality operator. +See \helpref{reference-counted object comparison}{refcountequality} for more info.