+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Name: colour.tex
+%% Purpose: wxColour docs
+%% Author:
+%% Modified by: Francesco Montorsi
+%% Created:
+%% RCS-ID: $Id$
+%% Copyright: (c) wxWidgets
+%% License: wxWindows license
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
\section{\class{wxColour}}\label{wxcolour}
A colour is an object representing a combination of Red, Green, and Blue (RGB) intensity values,
<wx/colour.h>
+\wxheading{Library}
+
+\helpref{wxCore}{librarieslist}
+
\wxheading{Predefined objects}
Objects:
Default constructor.
-\func{}{wxColour}{\param{const unsigned char}{ red}, \param{const unsigned char}{ green}, \param{const unsigned char}{ blue}}
+\func{}{wxColour}{\param{unsigned char}{ red}, \param{unsigned char}{ green}, \param{unsigned char}{ blue}, \param{unsigned char}{ alpha=wxALPHA\_OPAQUE}}
-Constructs a colour from red, green and blue values.
+Constructs a colour from red, green, blue and alpha values.
\func{}{wxColour}{\param{const wxString\& }{colourNname}}
-Constructs a colour object using a colour name
-listed in {\bf wxTheColourDatabase}.
+Constructs a colour using the given string. See \helpref{Set}{wxcolourset} for more info.
\func{}{wxColour}{\param{const wxColour\&}{ colour}}
\docparam{blue}{The blue value.}
+\docparam{alpha}{The alpha value. Alpha values range from 0 (wxALPHA\_TRANSPARENT) to 255 (wxALPHA\_OPAQUE).}
+
\docparam{colourName}{The colour name.}
\docparam{colour}{The colour to copy.}
+\membersection{wxColour::Alpha}\label{wxcolouralpha}
+
+\constfunc{unsigned char}{Alpha}{\void}
+
+Returns the alpha value, on platforms where alpha is not yet supported, this always returns wxALPHA\_OPAQUE.
+
+
\membersection{wxColour::Blue}\label{wxcolourblue}
\constfunc{unsigned char}{Blue}{\void}
Returns the blue intensity.
+\membersection{wxColour::GetAsString}\label{wxcolourgetasstring}
+
+\constfunc{wxString}{GetAsString}{\param{long}{ flags}}
+
+Converts this colour to a \helpref{wxString}{wxstring}
+using the given {\it flags}.
+
+The supported flags are \textbf{wxC2S\_NAME}, to obtain the colour name (e.g.
+wxColour(255,0,0) -> \texttt{``red"}), \textbf{wxC2S\_CSS\_SYNTAX}, to obtain
+the colour in the \texttt{``rgb(r,g,b)"} or \texttt{``rgba(r,g,b,a)"} syntax
+(e.g. wxColour(255,0,0,85) -> \texttt{``rgba(255,0,0,0.333)"}), and
+\textbf{wxC2S\_HTML\_SYNTAX}, to obtain the colour as \texttt{``\#"} followed
+by 6 hexadecimal digits (e.g. wxColour(255,0,0) -> \texttt{``\#FF0000"}).
+
+This function never fails and always returns a non-empty string but asserts if
+the colour has alpha channel (i.e. is non opaque) but
+\textbf{wxC2S\_CSS\_SYNTAX} (which is the only one supporting alpha) is not
+specified in flags.
+
+\newsince{2.7.0}
+
+
\membersection{wxColour::GetPixel}\label{wxcolourgetpixel}
\constfunc{long}{GetPixel}{\void}
Returns the green intensity.
-\membersection{wxColour::Ok}\label{wxcolourok}
+\membersection{wxColour::IsOk}\label{wxcolourisok}
-\constfunc{bool}{Ok}{\void}
+\constfunc{bool}{IsOk}{\void}
Returns \true if the colour object is valid (the colour has been initialised with RGB values).
\membersection{wxColour::Set}\label{wxcolourset}
-\func{void}{Set}{\param{const unsigned char}{ red}, \param{const unsigned char}{ green}, \param{const unsigned char}{ blue}}
+\func{void}{Set}{\param{unsigned char}{ red}, \param{unsigned char}{ green}, \param{unsigned char}{ blue}, \param{unsigned char}{ alpha=wxALPHA\_OPAQUE}}
-Sets the RGB intensity values.
+\func{void}{Set}{\param{unsigned long}{ RGB}}
+
+\func{bool}{Set}{\param{const wxString \&}{ str}}
+
+Sets the RGB intensity values using the given values (first overload), extracting them from the packed long (second overload), using the given string (third overloard).
+
+When using third form, Set() accepts: colour names (those listed in
+\helpref{wxTheColourDatabase}{wxcolourdatabase}), the CSS-like
+\texttt{``rgb(r,g,b)"} or \texttt{``rgba(r,g,b,a)"} syntax (case insensitive)
+and the HTML-like syntax (i.e. \texttt{``\#"} followed by 6 hexadecimal digits
+for red, green, blue components).
+
+Returns \true if the conversion was successful, \false otherwise.
+
+\newsince{2.7.0}
\membersection{wxColour::operator $=$}\label{wxcolourassign}
\func{bool}{operator $==$}{\param{const wxColour\&}{ colour}}
-Tests the equality of two colours by comparing individual red, green blue colours.
+Tests the equality of two colours by comparing individual red, green, blue colours and alpha values.
\membersection{wxColour::operator $!=$}\label{wxcolourinequality}
\func{bool}{operator $!=$}{\param{const wxColour\&}{ colour}}
-Tests the inequality of two colours by comparing individual red, green blue colours.
+Tests the inequality of two colours by comparing individual red, green, blue colours and alpha values.
\section{\class{wxColourData}}\label{wxcolourdata}
<wx/cmndata.h>
+\wxheading{Library}
+
+\helpref{wxCore}{librarieslist}
+
\wxheading{See also}
\helpref{wxColour}{wxcolour}, \helpref{wxColourDialog}{wxcolourdialog}, \helpref{wxColourDialog overview}{wxcolourdialogoverview}
wxWidgets maintains a database of standard RGB colours for a predefined
set of named colours (such as ``BLACK'', ``LIGHT GREY''). The
-application may add to this set if desired by using
+application may add to this set if desired by using
\helpref{AddColour}{wxcolourdatabaseaddcolour} and may use it to look up
colours by names using \helpref{Find}{wxcolourdatabasefind} or find the names
for the standard colour suing \helpref{FindName}{wxcolourdatabasefindname}.
-There is one predefined instance of this class called
+There is one predefined instance of this class called
{\bf wxTheColourDatabase}.
\wxheading{Derived from}
<wx/gdicmn.h>
+\wxheading{Library}
+
+\helpref{wxCore}{librarieslist}
+
\wxheading{Remarks}
The standard database contains at least the following colours:
\membersection{wxColourDatabase::Find}\label{wxcolourdatabasefind}
-\func{wxColour}{FindColour}{\param{const wxString\& }{colourName}}
+\func{wxColour}{Find}{\param{const wxString\& }{colourName}}
Finds a colour given the name. Returns an invalid colour object (that is, such
-that its \helpref{Ok()}{wxcolourok} method returns \false) if the colour wasn't
+that its \helpref{Ok()}{wxcolourisok} method returns \false) if the colour wasn't
found in the database.
-\membersection{wxColourDatabase::FindColour}\label{wxcolourdatabasefindcolour}
-
-\func{wxColour*}{FindColour}{\param{const wxString\& }{colourName}}
-
-Finds a colour given the name. Returns {\tt NULL} if not found or a pointer which
-must be deleted by the caller otherwise.
-
-Please note that this method is deprecated and will be removed in the next
-wxWidgets version, please use \helpref{Find}{wxcolourdatabasefind} instead of
-it.
-
-
\membersection{wxColourDatabase::FindName}\label{wxcolourdatabasefindname}
\constfunc{wxString}{FindName}{\param{const wxColour\&}{ colour}}
Finds a colour name given the colour. Returns an empty string if the colour is
not found in the database.
-
projects / wxWidgets.git / blobdiff