gimpcairo-utils

gimpcairo-utils —

Synopsis

void                gimp_cairo_set_source_rgb           (cairo_t *cr,
                                                         const GimpRGB *color);
void                gimp_cairo_set_source_rgba          (cairo_t *cr,
                                                         const GimpRGB *color);
gboolean            gimp_cairo_set_focus_line_pattern   (cairo_t *cr,
                                                         GtkWidget *widget);
cairo_pattern_t *   gimp_cairo_checkerboard_create      (cairo_t *cr,
                                                         gint size,
                                                         const GimpRGB *light,
                                                         const GimpRGB *dark);
cairo_surface_t *   gimp_cairo_surface_create_from_pixbuf
                                                        (GdkPixbuf *pixbuf);
#define             GIMP_CAIRO_RGB24_SET_PIXEL          (d, r, g, b)
#define             GIMP_CAIRO_ARGB32_SET_PIXEL         (d, r, g, b, a)

Description

Details

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.

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.

cr : Cairo context
color : GimpRGB color

Since GIMP 2.6


gimp_cairo_set_focus_line_pattern ()

gboolean            gimp_cairo_set_focus_line_pattern   (cairo_t *cr,
                                                         GtkWidget *widget);

Sets color and dash pattern for stroking a focus line on the given cr. The line pattern is taken from widget.

cr : Cairo context
widget : widget to draw the focus indicator on
Returns : TRUE if the widget style has a focus line pattern, FALSE otherwise

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.

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_surface_create_from_pixbuf ()

cairo_surface_t *   gimp_cairo_surface_create_from_pixbuf
                                                        (GdkPixbuf *pixbuf);

Create a Cairo image surface from a GdkPixbuf.

You should avoid calling this function as there are probably more efficient ways of achieving the result you are looking for.

pixbuf : a GdkPixbuf
Returns :

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.

d : pointer to the destination buffer
r : red component
g : green component
b : blue component

Since GIMP 2.6


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.

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