![]() |
![]() |
![]() |
Cairo: A Vector Graphics Library | ![]() |
---|
XCB BackendXCB Backend — |
cairo_surface_t* cairo_xcb_surface_create (XCBConnection *c, XCBDRAWABLE drawable, XCBVISUALTYPE *visual, int width, int height); cairo_surface_t* cairo_xcb_surface_create_for_bitmap (XCBConnection *c, XCBPIXMAP bitmap, int width, int height); void cairo_xcb_surface_set_size (cairo_surface_t *surface, int width, int height);
cairo_surface_t* cairo_xcb_surface_create (XCBConnection *c, XCBDRAWABLE drawable, XCBVISUALTYPE *visual, int width, int height);
Creates an XCB surface that draws to the given drawable. The way that colors are represented in the drawable is specified by the provided visual.
NOTE: If drawable
is a window, then the function
cairo_xcb_surface_set_size must be called whenever the size of the
window changes.
c : |
an XCB connection |
drawable : |
an XCB drawable |
visual : |
the visual to use for drawing to drawable . The depth
of the visual must match the depth of the drawable.
Currently, only TrueColor visuals are fully supported.
|
width : |
the current width of drawable .
|
height : |
the current height of drawable .
|
Returns : | the newly created surface |
cairo_surface_t* cairo_xcb_surface_create_for_bitmap (XCBConnection *c, XCBPIXMAP bitmap, int width, int height);
Creates an XCB surface that draws to the given bitmap. This will be drawn to as a CAIRO_FORMAT_A1 object.
c : |
an XCB connection |
bitmap : |
an XCB Pixmap (a depth-1 pixmap) |
width : |
the current width of bitmap
|
height : |
the current height of bitmap
|
Returns : | the newly created surface |
void cairo_xcb_surface_set_size (cairo_surface_t *surface, int width, int height);
Informs cairo of the new size of the XCB drawable underlying the surface. For a surface created for a window (rather than a pixmap), this function must be called each time the size of the window changes. (For a subwindow, you are normally resizing the window yourself, but for a toplevel window, it is necessary to listen for ConfigureNotify events.)
A pixmap can never change size, so it is never necessary to call this function on a surface created for a pixmap.
surface : |
a cairo_surface_t for the XCB backend |
width : |
the new width of the surface |
height : |
the new height of the surface |
<< Microsoft Windows Backend | XLib Backend >> |