forked from enlightenment/efl
* evas: oops, that wasn't to be gone.
SVN revision: 51221
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@ -1152,3 +1152,122 @@ evas_load_error_str(int error)
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return "Unknown error";
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}
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}
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/**
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* Convert a given color from HSV to RGB format.
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*
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* @param h The Hue component of the color.
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* @param s The Saturation component of the color.
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* @param v The Value component of the color.
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* @param r The Red component of the color.
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* @param g The Green component of the color.
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* @param b The Blue component of the color.
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*
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* This function converts a given color in HSV color format to RGB
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* color format.
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*
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* @ingroup Evas_Utils
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**/
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EAPI void
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evas_color_hsv_to_rgb(float h, float s, float v, int *r, int *g, int *b)
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{
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evas_common_convert_color_hsv_to_rgb(h, s, v, r, g, b);
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}
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/**
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* Convert a given color from RGB to HSV format.
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*
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* @param r The Red component of the color.
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* @param g The Green component of the color.
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* @param b The Blue component of the color.
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* @param h The Hue component of the color.
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* @param s The Saturation component of the color.
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* @param v The Value component of the color.
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*
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* This function converts a given color in RGB color format to HSV
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* color format.
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*
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* @ingroup Evas_Utils
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**/
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EAPI void
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evas_color_rgb_to_hsv(int r, int g, int b, float *h, float *s, float *v)
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{
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evas_common_convert_color_rgb_to_hsv(r, g, b, h, s, v);
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}
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/**
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* Pre-multiplies a rgb triplet by an alpha factor.
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*
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* @param a The alpha factor.
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* @param r The Red component of the color.
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* @param g The Green component of the color.
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* @param b The Blue component of the color.
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*
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* This function pre-multiplies a given rbg triplet by an alpha
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* factor. Alpha factor is used to define transparency.
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*
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* @ingroup Evas_Utils
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**/
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EAPI void
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evas_color_argb_premul(int a, int *r, int *g, int *b)
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{
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evas_common_convert_color_argb_premul(a, r, g, b);
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}
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/**
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* Undo pre-multiplication of a rgb triplet by an alpha factor.
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*
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* @param a The alpha factor.
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* @param r The Red component of the color.
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* @param g The Green component of the color.
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* @param b The Blue component of the color.
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*
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* This function undoes pre-multiplication a given rbg triplet by an
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* alpha factor. Alpha factor is used to define transparency.
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*
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* @see evas_color_argb_premul().
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*
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* @ingroup Evas_Utils
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**/
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EAPI void
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evas_color_argb_unpremul(int a, int *r, int *g, int *b)
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{
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evas_common_convert_color_argb_unpremul(a, r, g, b);
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}
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/**
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* Pre-multiplies data by an alpha factor.
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*
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* @param data The data value.
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* @param len The lenght value.
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*
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* This function pre-multiplies a given data by an alpha
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* factor. Alpha factor is used to define transparency.
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*
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* @ingroup Evas_Utils
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**/
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EAPI void
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evas_data_argb_premul(unsigned int *data, unsigned int len)
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{
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if (!data || (len < 1)) return;
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evas_common_convert_argb_premul(data, len);
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}
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/**
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* Undo pre-multiplication data by an alpha factor.
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*
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* @param data The data value.
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* @param len The lenght value.
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*
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* This function undoes pre-multiplication of a given data by an alpha
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* factor. Alpha factor is used to define transparency.
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*
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* @ingroup Evas_Utils
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**/
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EAPI void
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evas_data_argb_unpremul(unsigned int *data, unsigned int len)
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{
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if (!data || (len < 1)) return;
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evas_common_convert_argb_unpremul(data, len);
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}
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