gdk_window_create_similar_surface ()

cairo_surface_t *
gdk_window_create_similar_surface (GdkWindow *window,
                                   cairo_content_t content,
                                   int width,
                                   int height);

Create a new surface that is as compatible as possible with the given window . For example the new surface will have the same fallback resolution and font options as window . Generally, the new surface will also use the same backend as window , unless that is not possible for some reason. The type of the returned surface may be examined with cairo_surface_get_type().

Initially the surface contents are all 0 (transparent if contents have transparency, black otherwise.)

Since 2.22

gdk_window_create_similar_image_surface ()

cairo_surface_t *
gdk_window_create_similar_image_surface
                               (GdkWindow *window,
                                cairo_format_t format,
                                int width,
                                int height,
                                int scale);

Create a new image surface that is efficient to draw on the given window .

Initially the surface contents are all 0 (transparent if contents have transparency, black otherwise.)

Since 3.10

gdk_cairo_create ()

cairo_t *
gdk_cairo_create (GdkWindow *window);

Creates a Cairo context for drawing to window .

Note that calling cairo_reset_clip() on the resulting cairo_t will produce undefined results, so avoid it at all costs.

Since 2.8

gdk_cairo_get_clip_rectangle ()

gboolean
gdk_cairo_get_clip_rectangle (cairo_t *cr,
                              GdkRectangle *rect);

This is a convenience function around cairo_clip_extents(). It rounds the clip extents to integer coordinates and returns a boolean indicating if a clip area exists.

gdk_cairo_set_source_color ()

void
gdk_cairo_set_source_color (cairo_t *cr,
                            const GdkColor *color);

Sets the specified GdkColor as the source color of cr .

Since 2.8

gdk_cairo_set_source_rgba ()

void
gdk_cairo_set_source_rgba (cairo_t *cr,
                           const GdkRGBA *rgba);

Sets the specified GdkRGBA as the source color of cr .

Since 3.0

gdk_cairo_set_source_pixbuf ()

void
gdk_cairo_set_source_pixbuf (cairo_t *cr,
                             const GdkPixbuf *pixbuf,
                             gdouble pixbuf_x,
                             gdouble pixbuf_y);

Sets the given pixbuf as the source pattern for cr .

The pattern has an extend mode of CAIRO_EXTEND_NONE and is aligned so that the origin of pixbuf is pixbuf_x , pixbuf_y .

Since 2.8

gdk_cairo_set_source_window ()

void
gdk_cairo_set_source_window (cairo_t *cr,
                             GdkWindow *window,
                             gdouble x,
                             gdouble y);

Sets the given window as the source pattern for cr .

The pattern has an extend mode of CAIRO_EXTEND_NONE and is aligned so that the origin of window is x , y . The window contains all its subwindows when rendering.

Note that the contents of window are undefined outside of the visible part of window , so use this function with care.

Since 2.24

gdk_cairo_rectangle ()

void
gdk_cairo_rectangle (cairo_t *cr,
                     const GdkRectangle *rectangle);

Adds the given rectangle to the current path of cr .

Since 2.8

gdk_cairo_region ()

void
gdk_cairo_region (cairo_t *cr,
                  const cairo_region_t *region);

Adds the given region to the current path of cr .

Since 2.8

gdk_cairo_region_create_from_surface ()

cairo_region_t *
gdk_cairo_region_create_from_surface (cairo_surface_t *surface);

Creates region that describes covers the area where the given surface is more than 50% opaque.

This function takes into account device offsets that might be set with cairo_surface_set_device_offset().

gdk_cairo_surface_create_from_pixbuf ()

cairo_surface_t *
gdk_cairo_surface_create_from_pixbuf (const GdkPixbuf *pixbuf,
                                      int scale,
                                      GdkWindow *for_window);

Creates an image surface with the same contents as the pixbuf.

Since 3.10