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* evas: oops, that wasn't to be gone. 

SVN revision: 51221
This commit is contained in:
Cedric BAIL 2010-08-16 16:13:41 +00:00
parent e3a887235d
commit b792eff62d
1 changed files with 119 additions and 0 deletions
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119
legacy/evas/src/lib/canvas/evas_main.c
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@ -1152,3 +1152,122 @@ evas_load_error_str(int error)
return "Unknown error";
}
}
/**
* Convert a given color from HSV to RGB format.
*
* @param h The Hue component of the color.
* @param s The Saturation component of the color.
* @param v The Value component of the color.
* @param r The Red component of the color.
* @param g The Green component of the color.
* @param b The Blue component of the color.
*
* This function converts a given color in HSV color format to RGB
* color format.
*
* @ingroup Evas_Utils
**/
EAPI void
evas_color_hsv_to_rgb(float h, float s, float v, int *r, int *g, int *b)
{
evas_common_convert_color_hsv_to_rgb(h, s, v, r, g, b);
}
/**
* Convert a given color from RGB to HSV format.
*
* @param r The Red component of the color.
* @param g The Green component of the color.
* @param b The Blue component of the color.
* @param h The Hue component of the color.
* @param s The Saturation component of the color.
* @param v The Value component of the color.
*
* This function converts a given color in RGB color format to HSV
* color format.
*
* @ingroup Evas_Utils
**/
EAPI void
evas_color_rgb_to_hsv(int r, int g, int b, float *h, float *s, float *v)
{
evas_common_convert_color_rgb_to_hsv(r, g, b, h, s, v);
}
/**
* Pre-multiplies a rgb triplet by an alpha factor.
*
* @param a The alpha factor.
* @param r The Red component of the color.
* @param g The Green component of the color.
* @param b The Blue component of the color.
*
* This function pre-multiplies a given rbg triplet by an alpha
* factor. Alpha factor is used to define transparency.
*
* @ingroup Evas_Utils
**/
EAPI void
evas_color_argb_premul(int a, int *r, int *g, int *b)
{
evas_common_convert_color_argb_premul(a, r, g, b);
}
/**
* Undo pre-multiplication of a rgb triplet by an alpha factor.
*
* @param a The alpha factor.
* @param r The Red component of the color.
* @param g The Green component of the color.
* @param b The Blue component of the color.
*
* This function undoes pre-multiplication a given rbg triplet by an
* alpha factor. Alpha factor is used to define transparency.
*
* @see evas_color_argb_premul().
*
* @ingroup Evas_Utils
**/
EAPI void
evas_color_argb_unpremul(int a, int *r, int *g, int *b)
{
evas_common_convert_color_argb_unpremul(a, r, g, b);
}
/**
* Pre-multiplies data by an alpha factor.
*
* @param data The data value.
* @param len The lenght value.
*
* This function pre-multiplies a given data by an alpha
* factor. Alpha factor is used to define transparency.
*
* @ingroup Evas_Utils
**/
EAPI void
evas_data_argb_premul(unsigned int *data, unsigned int len)
{
if (!data || (len < 1)) return;
evas_common_convert_argb_premul(data, len);
}
/**
* Undo pre-multiplication data by an alpha factor.
*
* @param data The data value.
* @param len The lenght value.
*
* This function undoes pre-multiplication of a given data by an alpha
* factor. Alpha factor is used to define transparency.
*
* @ingroup Evas_Utils
**/
EAPI void
evas_data_argb_unpremul(unsigned int *data, unsigned int len)
{
if (!data || (len < 1)) return;
evas_common_convert_argb_unpremul(data, len);
}