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phoenix_title wx.Colour

A colour is an object representing a combination of Red, Green, and Blue (RGB) intensity values, and is used to determine drawing colours.

See the entry for wx.ColourDatabase for how a pointer to a predefined, named colour may be returned instead of creating a new colour.

Valid RGB values are in the range 0 to 255.

You can retrieve the current system colour settings with wx.SystemSettings.

See also

wx.ColourDatabase, wx.Pen, wx.Brush, wx.ColourDialog, wx.SystemSettings


class_hierarchy Class Hierarchy

Inheritance diagram for class Colour:

method_summary Methods Summary

__init__ Default constructor.
Alpha Returns the alpha value, on platforms where alpha is not yet supported, this always returns wx.ALPHA_OPAQUE.
AlphaBlend Blend colour, taking alpha into account.
Blue Returns the blue intensity.
ChangeLightness wx.Colour wrapper for ChangeLightness(r,g,b,ialpha).
Get Returns the RGB intensity values as a tuple, optionally the alpha value as well.
GetAsString Converts this colour to a String using the given flags.
GetIM Returns an immutable representation of the wx.Colour object, based on namedtuple.
GetPixel  
GetRGB Gets the RGB or RGBA colour values as a single 32 bit value.
GetRGBA Gets the RGB or RGBA colour values as a single 32 bit value.
Green Returns the green intensity.
IsOk Returns True if the colour object is valid (the colour has been initialised with RGB values).
MakeDisabled Make a disabled version of this colour.
MakeGrey Create a grey colour from (in/out) rgb parameters using integer arithmetic.
MakeMono Assign 0 or 255 to rgb out parameters.
Red Returns the red intensity.
Set Sets the RGB intensity values using the given values (first overload), extracting them from the packed long (second overload), using the given string (third overload).
SetRGB Sets the RGB or RGBA colour values from a single 32 bit value.
SetRGBA Sets the RGB or RGBA colour values from a single 32 bit value.
__getitem__  
__len__  
__nonzero__  
__reduce__  
__repr__  
__setitem__  
__str__  
_copyFrom For internal use only.
__ne__ Tests the inequality of two colours by comparing individual red, green, blue colours and alpha values.
__eq__ Tests the equality of two colours by comparing individual red, green, blue colours and alpha values.

property_summary Properties Summary

Pixel See GetPixel
RGB See GetRGB and SetRGB
RGBA See GetRGBA and SetRGBA
alpha See Alpha
blue See Blue
green See Green
red See Red

api Class API


class wx.Colour(Object)

Possible constructors:

Colour()

Colour(red, green, blue, alpha=ALPHA_OPAQUE)

Colour(colRGB)

Colour(colour)

A colour is an object representing a combination of Red, Green, and Blue (RGB) intensity values, and is used to determine drawing colours.


Methods


__init__(self, *args, **kw)

overload Overloaded Implementations:


__init__ (self)

Default constructor.


__init__ (self, red, green, blue, alpha=ALPHA_OPAQUE)

Parameters:
  • red (int) – The red value.
  • green (int) – The green value.
  • blue (int) – The blue value.
  • alpha (int) – The alpha value. Alpha values range from 0 (wx``wx.ALPHA_TRANSPARENT``) to 255 (wx``wx.ALPHA_OPAQUE``).


__init__ (self, colRGB)

Parameters:colRGB (long) – A packed RGB value.


__init__ (self, colour)

Copy constructor.

Parameters:colour (wx.Colour) –



Alpha(self)

Returns the alpha value, on platforms where alpha is not yet supported, this always returns wx.ALPHA_OPAQUE.

Return type:int

static AlphaBlend(fg, bg, alpha)

Blend colour, taking alpha into account.

Parameters:
  • fg (int) –
  • bg (int) –
  • alpha (float) –
Return type:

int

New in version 2.9.0.


Blue(self)

Returns the blue intensity.

Return type:int

ChangeLightness(self, *args, **kw)

overload Overloaded Implementations:


ChangeLightness (self, ialpha)

wx.Colour wrapper for ChangeLightness(r,g,b,ialpha).

Parameters:ialpha (int) –
Return type: wx.Colour

New in version 2.9.0.


ChangeLightness (r, g, b, ialpha)

ChangeLightness is a utility function that simply darkens or lightens a color, based on the specified percentage ialpha of 0 would be completely black, 200 completely white an ialpha of 100 returns the same colour.

Parameters:
  • r (int) –
  • g (int) –
  • b (int) –
  • ialpha (int) –
Return type:

tuple
Returns:

( r, g, b )

New in version 2.9.0.



Get(self, includeAlpha=True)
Returns the RGB intensity values as a tuple, optionally the alpha value as well.
Return type:tuple
Returns:( r, g, b) or (r, g, b, a )

GetAsString(self, flags=C2S_NAME|C2S_CSS_SYNTAX)

Converts this colour to a String using the given flags.

The supported flags are C2S_NAME , to obtain the colour name (e.g. wx.Colour == “red”), C2S_CSS_SYNTAX , to obtain the colour in the “rgb(r,g,b)” or “rgba(r,g,b,a)” syntax (e.g. wx.Colour == “rgba(255,0,0,0.333)”), and C2S_HTML_SYNTAX , to obtain the colour as “#” followed by 6 hexadecimal digits (e.g. wx.Colour == “#``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 C2S_CSS_SYNTAX (which is the only one supporting alpha) is not specified in flags.

Parameters:flags (long) –
Return type:string

New in version 2.7.0.


GetIM(self)

Returns an immutable representation of the wx.Colour object, based on namedtuple.

This new object is hashable and can be used as a dictionary key, be added to sets, etc. It can be converted back into a real wx.Colour with a simple statement like this: obj = wx.Colour(imObj).


GetPixel(self)
Return type:wx.IntPtr

GetRGB(self)

Gets the RGB or RGBA colour values as a single 32 bit value.

The returned value is of the same form as expected by SetRGB and SetRGBA .

Notice that GetRGB returns the value with 0 as its highest byte independently of the value actually returned by Alpha . So for a fully opaque colour, the return value of GetRGBA is 0xFFBBGGRR while that of GetRGB is 0x00BBGGRR .

Return type:wx.int

New in version 2.9.1.


GetRGBA(self)

Gets the RGB or RGBA colour values as a single 32 bit value.

The returned value is of the same form as expected by SetRGB and SetRGBA .

Notice that GetRGB returns the value with 0 as its highest byte independently of the value actually returned by Alpha . So for a fully opaque colour, the return value of GetRGBA is 0xFFBBGGRR while that of GetRGB is 0x00BBGGRR .

Return type:wx.int

New in version 2.9.1.


Green(self)

Returns the green intensity.

Return type:int

IsOk(self)

Returns True if the colour object is valid (the colour has been initialised with RGB values).

Return type:bool

MakeDisabled(self, *args, **kw)

overload Overloaded Implementations:


MakeDisabled (self, brightness=255)

Make a disabled version of this colour.

This method modifies the object in place and returns the object itself.

Parameters:brightness (int) –
Return type: wx.Colour

New in version 2.9.5.


MakeDisabled (r, g, b, brightness=255)

Create a disabled (dimmed) colour from (in/out) rgb parameters.

Parameters:
  • r (int) –
  • g (int) –
  • b (int) –
  • brightness (int) –
Return type:

tuple
Returns:

( r, g, b )

New in version 2.9.0.



static MakeGrey(*args, **kw)

overload Overloaded Implementations:


MakeGrey (r, g, b)

Create a grey colour from (in/out) rgb parameters using integer arithmetic.

Parameters:
  • r (int) –
  • g (int) –
  • b (int) –
Return type:

tuple
Returns:

( r, g, b )

New in version 2.9.0.


MakeGrey (r, g, b, weight_r, weight_g, weight_b)

Create a grey colour from (in/out) rgb parameters using floating point arithmetic.

Defaults to using the standard ITU-T BT.601 when converting to YUV, where every pixel equals (R weight_r) + (G weight_g) + (B weight_b).

Parameters:
  • r (int) –
  • g (int) –
  • b (int) –
  • weight_r (float) –
  • weight_g (float) –
  • weight_b (float) –
Return type:

tuple
Returns:

( r, g, b )

New in version 2.9.0.



static MakeMono(on)

Assign 0 or 255 to rgb out parameters.

Parameters:on (bool) –
Return type:tuple
Returns:( r, g, b )

New in version 2.9.0.


Red(self)

Returns the red intensity.

Return type:int

Set(self, *args, **kw)

Sets the RGB intensity values using the given values (first overload), extracting them from the packed long (second overload), using the given string (third overload).

When using third form, Set accepts: colour names (those listed in wx.ColourDatabase), the CSS-like "rgb(r,g,b)" or "rgba(r,g,b,a)" syntax (case insensitive) and the HTML-like syntax: "#" followed by 6 hexadecimal digits for red, green, blue components.

Returns True if the conversion was successful, False otherwise.

New in version 2.7.0.

overload Overloaded Implementations:


Set (self, red, green, blue, alpha=ALPHA_OPAQUE)

Parameters:
  • red (int) –
  • green (int) –
  • blue (int) –
  • alpha (int) –


Set (self, RGB)

Parameters:RGB (long) –


Set (self, str)

Parameters:str (string) –
Return type:bool



SetRGB(self, colRGB)

Sets the RGB or RGBA colour values from a single 32 bit value.

The arguments colRGB and colRGBA should be of the form 0x00BBGGRR and 0xAABBGGRR respectively where 0xRR , 0xGG , 0xBB and 0xAA are the values of the red, blue, green and alpha components.

Notice the right-to-left order of components!

Parameters:colRGB (wx.int) –

New in version 2.9.1.

See also

GetRGB , GetRGBA


SetRGBA(self, colRGBA)

Sets the RGB or RGBA colour values from a single 32 bit value.

The arguments colRGB and colRGBA should be of the form 0x00BBGGRR and 0xAABBGGRR respectively where 0xRR , 0xGG , 0xBB and 0xAA are the values of the red, blue, green and alpha components.

Notice the right-to-left order of components!

Parameters:colRGBA (wx.int) –

New in version 2.9.1.

See also

GetRGB , GetRGBA


__getitem__(self, idx)

__len__(self)

__nonzero__(self)

__reduce__(self)

__repr__(self)

__setitem__(self, idx, val)

__str__(self)

_copyFrom(self, other)

For internal use only.


__ne__(self)

Tests the inequality of two colours by comparing individual red, green, blue colours and alpha values.

Parameters:colour (wx.Colour) –

__eq__(self)

Tests the equality of two colours by comparing individual red, green, blue colours and alpha values.

Parameters:colour (wx.Colour) –

Properties


Pixel

See GetPixel


RGB

See GetRGB and SetRGB


RGBA

See GetRGBA and SetRGBA


alpha

See Alpha


blue

See Blue


green

See Green


red

See Red