+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% 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,
Valid RGB values are in the range 0 to 255.
+You can retrieve the current system colour settings with \helpref{wxSystemSettings}{wxsystemsettings}.
+
\wxheading{Derived from}
\helpref{wxObject}{wxobject}
<wx/colour.h>
+\wxheading{Library}
+
+\helpref{wxCore}{librarieslist}
+
\wxheading{Predefined objects}
Objects:
\wxheading{See also}
\helpref{wxColourDatabase}{wxcolourdatabase}, \helpref{wxPen}{wxpen}, \helpref{wxBrush}{wxbrush},\rtfsp
-\helpref{wxColourDialog}{wxcolourdialog}
+\helpref{wxColourDialog}{wxcolourdialog}, \helpref{wxSystemSettings}{wxsystemsettings}
\latexignore{\rtfignore{\wxheading{Members}}}
+
\membersection{wxColour::wxColour}\label{wxcolourconstr}
\func{}{wxColour}{\void}
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.}
\pythonnote{Constructors supported by wxPython are:\par
\indented{2cm}{\begin{twocollist}
-\twocolitem{\bf{wxColour(red=0, green=0, blue=0)}}{}
-\twocolitem{\bf{wxNamedColour(name)}}{}
+\twocolitem{{\bf wxColour(red=0, green=0, blue=0)}}{}
+\twocolitem{{\bf wxNamedColour(name)}}{}
\end{twocollist}}
}
+
+\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}
-1 is returned if the pixel is invalid (on X, unallocated).
+
\membersection{wxColour::Green}\label{wxcolourgreen}
\constfunc{unsigned char}{Green}{\void}
Returns the green intensity.
-\membersection{wxColour::Ok}\label{wxcolourok}
-\constfunc{bool}{Ok}{\void}
+\membersection{wxColour::IsOk}\label{wxcolourisok}
+
+\constfunc{bool}{IsOk}{\void}
+
+Returns \true if the colour object is valid (the colour has been initialised with RGB values).
-Returns TRUE if the colour object is valid (the colour has been initialised with RGB values).
\membersection{wxColour::Red}\label{wxcolourred}
Returns the red intensity.
+
\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}}
+
+\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}
-Sets the RGB intensity values.
\membersection{wxColour::operator $=$}\label{wxcolourassign}
\helpref{wxColourDatabase}{wxcolourdatabase}
+
\membersection{wxColour::operator $==$}\label{wxcolourequality}
\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}
\latexignore{\rtfignore{\wxheading{Members}}}
-\membersection{wxColourData::wxColourData}\label{wxcolourdataconstr}
+
+\membersection{wxColourData::wxColourData}\label{wxcolourdatactor}
\func{}{wxColourData}{\void}
-Constructor. Initializes the custom colours to white, the {\it data colour} setting
-to black, and the {\it choose full} setting to TRUE.
+Constructor. Initializes the custom colours to {\tt wxNullColour},
+the {\it data colour} setting
+to black, and the {\it choose full} setting to true.
+
-\membersection{wxColourData::\destruct{wxColourData}}
+\membersection{wxColourData::\destruct{wxColourData}}\label{wxcolourdatadtor}
\func{}{\destruct{wxColourData}}{\void}
Destructor.
+
\membersection{wxColourData::GetChooseFull}\label{wxcolourdatagetchoosefull}
\constfunc{bool}{GetChooseFull}{\void}
Under Windows, determines whether the Windows colour dialog will display the full dialog
-with custom colour selection controls. Has no meaning under other platforms.
+with custom colour selection controls. Under PalmOS, determines whether colour dialog
+will display full rgb colour picker or only available palette indexer.
+Has no meaning under other platforms.
+
+The default value is true.
-The default value is TRUE.
\membersection{wxColourData::GetColour}\label{wxcolourdatagetcolour}
The default colour is black.
+
\membersection{wxColourData::GetCustomColour}\label{wxcolourdatagetcustomcolour}
\constfunc{wxColour\&}{GetCustomColour}{\param{int}{ i}}
Gets the {\it i}th custom colour associated with the colour dialog. {\it i} should
be an integer between 0 and 15.
-The default custom colours are all white.
+The default custom colours are invalid colours.
+
\membersection{wxColourData::SetChooseFull}\label{wxcolourdatasetchoosefull}
Under Windows, tells the Windows colour dialog to display the full dialog
with custom colour selection controls. Under other platforms, has no effect.
-The default value is TRUE.
+The default value is true.
+
\membersection{wxColourData::SetColour}\label{wxcolourdatasetcolour}
The default colour is black.
+
\membersection{wxColourData::SetCustomColour}\label{wxcolourdatasetcustomcolour}
-\func{void}{SetColour}{\param{int}{ i}, \param{const wxColour\&}{ colour}}
+\func{void}{SetCustomColour}{\param{int}{ i}, \param{const wxColour\&}{ colour}}
Sets the {\it i}th custom colour for the colour dialog. {\it i} should
be an integer between 0 and 15.
-The default custom colours are all white.
+The default custom colours are invalid colours.
+
\membersection{wxColourData::operator $=$}\label{wxcolourdataassign}
\func{void}{operator $=$}{\param{const wxColourData\&}{ data}}
-Assingment operator for the colour data.
+Assignment operator for the colour data.
+
+
+
\section{\class{wxColourDatabase}}\label{wxcolourdatabase}
-wxWindows maintains a database of standard RGB colours for a predefined
+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 {\it Append}. There
-is only one instance of this class: {\bf wxTheColourDatabase}.
+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
+{\bf wxTheColourDatabase}.
\wxheading{Derived from}
-\helpref{wxList}{wxlist}\\
-\helpref{wxObject}{wxobject}
+None
\wxheading{Include files}
<wx/gdicmn.h>
+\wxheading{Library}
+
+\helpref{wxCore}{librarieslist}
+
\wxheading{Remarks}
-The colours in the standard database are as follows:
+The standard database contains at least the following colours:
AQUAMARINE, BLACK, BLUE, BLUE VIOLET, BROWN, CADET BLUE, CORAL,
CORNFLOWER BLUE, CYAN, DARK GREY, DARK GREEN, DARK OLIVE GREEN, DARK
\latexignore{\rtfignore{\wxheading{Members}}}
+
\membersection{wxColourDatabase::wxColourDatabase}\label{wxcolourdatabaseconstr}
\func{}{wxColourDatabase}{\void}
-Constructs the colour database.
+Constructs the colour database. It will be initialized at the first use.
-\membersection{wxColourDatabase::FindColour}\label{wxcolourdatabasefindcolour}
-\func{wxColour*}{FindColour}{\param{const wxString\& }{colourName}}
+\membersection{wxColourDatabase::AddColour}\label{wxcolourdatabaseaddcolour}
-Finds a colour given the name. Returns NULL if not found.
+\func{void}{AddColour}{\param{const wxString\& }{colourName}, \param{const wxColour\&}{colour}}
-\membersection{wxColourDatabase::FindName}\label{wxcolourdatabasefindname}
+\func{void}{AddColour}{\param{const wxString\& }{colourName}, \param{wxColour* }{colour}}
-\constfunc{wxString}{FindName}{\param{const wxColour\&}{ colour}}
+Adds a colour to the database. If a colour with the same name already exists,
+it is replaced.
+
+Please note that the overload taking a pointer is deprecated and will be
+removed in the next wxWidgets version, please don't use it.
+
+
+\membersection{wxColourDatabase::Find}\label{wxcolourdatabasefind}
-Finds a colour name given the colour. Returns NULL if not found.
+\func{wxColour}{Find}{\param{const wxString\& }{colourName}}
-\membersection{wxColourDatabase::Initialize}\label{wxcolourdatabaseinitialize}
+Finds a colour given the name. Returns an invalid colour object (that is, such
+that its \helpref{Ok()}{wxcolourisok} method returns \false) if the colour wasn't
+found in the database.
-\func{void}{Initialize}{\void}
-Initializes the database with a number of stock colours. Called by wxWindows
-on start-up.
+\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.
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