How an image's center region (the complement to the border region) should be rendered by EFL

Since 1.23

• none - Image's center region is not to be rendered
• default - Image's center region is to be blended with objects underneath it, if it has transparency. This is the default behavior for image objects
• solid - Image's center region is to be made solid, even if it has transparency on it

enum Efl.Gfx.Center_Fill_Mode {
    none: 0,
    default: 1,
    solid: 2
}

typedef enum {
    EFL_GFX_CENTER_FILL_MODE_NONE = 0,
    EFL_GFX_CENTER_FILL_MODE_DEFAULT = 1,
    EFL_GFX_CENTER_FILL_MODE_SOLID = 2
} Efl_Gfx_Center_Fill_Mode;