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

ClutterBrightnessContrastEffect

typedef struct _ClutterBrightnessContrastEffect ClutterBrightnessContrastEffect;

ClutterBrightnessContrastEffect is an opaque structure whose members cannot be directly accessed

Since: 1.10

The “brightness” property

  “brightness”               ClutterColor *

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.

Flags: Read / Write

Since: 1.10

The “contrast” property

  “contrast”                 ClutterColor *

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.

Flags: Read / Write

Since: 1.10