ClutterBrightnessContrastEffect

typedef struct _ClutterBrightnessContrastEffect ClutterBrightnessContrastEffect;

ClutterBrightnessContrastEffect is an opaque structure whose members cannot be directly accessed

Since 1.10

clutter_brightness_contrast_effect_new ()

ClutterEffect *     clutter_brightness_contrast_effect_new
                                                        (void);

Creates a new ClutterBrightnessContrastEffect to be used with clutter_actor_add_effect()

Since 1.10

clutter_brightness_contrast_effect_set_brightness ()

void                clutter_brightness_contrast_effect_set_brightness
                                                        (ClutterBrightnessContrastEffect *effect,
                                                         float brightness);

The range of brightness is [-1.0, 1.0], where 0.0 designates no change; a value below 0.0 indicates a decrease in brightness; and a value above 0.0 indicates an increase of brightness.

Since 1.10

clutter_brightness_contrast_effect_set_brightness_full ()

void                clutter_brightness_contrast_effect_set_brightness_full
                                                        (ClutterBrightnessContrastEffect *effect,
                                                         float red,
                                                         float green,
                                                         float blue);

The range for each component is [-1.0, 1.0] where 0.0 designates no change, values below 0.0 mean a decrease in brightness, and values above indicate an increase.

Since 1.10

clutter_brightness_contrast_effect_get_brightness ()

void                clutter_brightness_contrast_effect_get_brightness
                                                        (ClutterBrightnessContrastEffect *effect,
                                                         float *red,
                                                         float *green,
                                                         float *blue);

Retrieves the change in brightness used by effect.

Since 1.10

clutter_brightness_contrast_effect_set_contrast ()

void                clutter_brightness_contrast_effect_set_contrast
                                                        (ClutterBrightnessContrastEffect *effect,
                                                         float contrast);

The range for contrast is [-1.0, 1.0], where 0.0 designates no change; a value below 0.0 indicates a decrease in contrast; and a value above 0.0 indicates an increase.

Since 1.10

clutter_brightness_contrast_effect_set_contrast_full ()

void                clutter_brightness_contrast_effect_set_contrast_full
                                                        (ClutterBrightnessContrastEffect *effect,
                                                         float red,
                                                         float green,
                                                         float blue);

The range for each component is [-1.0, 1.0] where 0.0 designates no change, values below 0.0 mean a decrease in contrast, and values above indicate an increase.

Since 1.10

clutter_brightness_contrast_effect_get_contrast ()

void                clutter_brightness_contrast_effect_get_contrast
                                                        (ClutterBrightnessContrastEffect *effect,
                                                         float *red,
                                                         float *green,
                                                         float *blue);

Retrieves the contrast value used by effect.

Since 1.10

The "brightness" property

  "brightness"               ClutterColor*         : Read / Write

The brightness change to apply to the effect.

This property uses a ClutterColor to represent the changes to each color channel. The range is [ 0, 255 ], with 127 as the value used to indicate no change; values smaller than 127 indicate a decrease in brightness, and values larger than 127 indicate an increase in brightness.

Since 1.10

The "contrast" property

  "contrast"                 ClutterColor*         : Read / Write

The contrast change to apply to the effect.

This property uses a ClutterColor to represent the changes to each color channel. The range is [ 0, 255 ], with 127 as the value used to indicate no change; values smaller than 127 indicate a decrease in contrast, and values larger than 127 indicate an increase in contrast.

Since 1.10