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GimpCairoColor

GimpCairoColor — Color utility functions for cairo

Description

Utility functions that make cairo easier to use with GIMP color data types.

Functions

gimp_cairo_set_source_rgb ()

void
gimp_cairo_set_source_rgb (cairo_t *cr,
                           const GimpRGB *color);

Sets the source pattern within cr to the solid opaque color described by color .

This function calls cairo_set_source_rgb() for you.

Parameters

cr

Cairo context

 

color

GimpRGB color

 

Since: GIMP 2.6


gimp_cairo_set_source_rgba ()

void
gimp_cairo_set_source_rgba (cairo_t *cr,
                            const GimpRGB *color);

Sets the source pattern within cr to the solid translucent color described by color .

This function calls cairo_set_source_rgba() for you.

Parameters

cr

Cairo context

 

color

GimpRGB color

 

Since: GIMP 2.6


gimp_cairo_checkerboard_create ()

cairo_pattern_t *
gimp_cairo_checkerboard_create (cairo_t *cr,
                                gint size,
                                const GimpRGB *light,
                                const GimpRGB *dark);

Create a repeating checkerboard pattern.

Parameters

cr

Cairo context

 

size

check size

 

light

light check color or NULL to use the default light gray

 

dark

dark check color or NULL to use the default dark gray

 

Returns

a new Cairo pattern that can be used as a source on cr .

Since: GIMP 2.6


GIMP_CAIRO_RGB24_SET_PIXEL()

#define             GIMP_CAIRO_RGB24_SET_PIXEL(d, r, g, b)

Sets a single pixel in an Cairo image surface in CAIRO_FORMAT_RGB24.

Parameters

d

pointer to the destination buffer

 

r

red component

 

g

green component

 

b

blue component

 

Since: GIMP 2.6


GIMP_CAIRO_RGB24_GET_PIXEL()

#define             GIMP_CAIRO_RGB24_GET_PIXEL(s, r, g, b)

Gets a single pixel from a Cairo image surface in CAIRO_FORMAT_RGB24.

Parameters

s

pointer to the source buffer

 

r

red component

 

g

green component

 

b

blue component

 

Since: GIMP 2.8


GIMP_CAIRO_ARGB32_SET_PIXEL()

#define             GIMP_CAIRO_ARGB32_SET_PIXEL(d, r, g, b, a)

Sets a single pixel in an Cairo image surface in CAIRO_FORMAT_ARGB32.

Parameters

d

pointer to the destination buffer

 

r

red component, not pre-multiplied

 

g

green component, not pre-multiplied

 

b

blue component, not pre-multiplied

 

a

alpha component

 

Since: GIMP 2.6


GIMP_CAIRO_ARGB32_GET_PIXEL()

#define             GIMP_CAIRO_ARGB32_GET_PIXEL(s, r, g, b, a)

Gets a single pixel from a Cairo image surface in CAIRO_FORMAT_ARGB32.

Parameters

s

pointer to the source buffer

 

r

red component, not pre-multiplied

 

g

green component, not pre-multiplied

 

b

blue component, not pre-multiplied

 

a

alpha component

 

Since: GIMP 2.8

Types and Values

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