: 噓 elchack:掰......                                                06/24 16:47
: 噓 EarlEco:我才不會忘記你的呢!                                     06/24 18:08
: → camerdy:??                                                      06/24 18:39
/*----------------------------------------------------------*/
/*  Colourmap creation sample programme: X11 interface      */
/*----------------------------------------------------------*/

#include <karma.h>
#include <karma_kcmap.h>
#include <karma_xc.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>


#define DEFAULT_COLOURMAP_NAME "Greyscale1"
#define MAX_COLOURS (unsigned int) 200

Kcolourmap setup_cmap (dpy, window)
/*  This routine will create a Kcolourmap object from an X11 display.
    The X display must be given by  dpy  .
    The X window must be given by  window  .
    The routine returns a Kcolourmap object.
*/
Display *display;
Window window;
{
    /*  Declare variables  */
    Kdisplay dpy_handle;
    XWindowAttributes window_attributes;
    Kcolourmap cmap;

    /*  Get X colourmap ID  */
    XGetWindowAttributes (display, win, &window_attributes);
    /*  Initialise colourmap system  */
    dpy_handle = xc_get_dpy_handle (display, window_attributes.colormap);
    /*  Create Kcolourmap object  */
    cmap = kcmap_va_create (DEFAULT_COLOURMAP_NAME, MAX_COLOURS, TRUE,
                            dpy_handle, xc_alloc_colours, xc_free_colours,
                            xc_store_colours, xc_get_location,
                            KCMAP_ATT_END);
    return (cmap);
}   /*  End Function setup_cmap  */

Example 2
This example shows how to initialise the colourmap system for a VX display,
and then create a colourmap.


/*----------------------------------------------------------*/
/*  Colourmap creation sample programme: VX interface       */
/*----------------------------------------------------------*/

#include <karma.h>
#include <karma_kcmap.h>
#include <karma_vc.h>


#define DEFAULT_COLOURMAP_NAME "Greyscale1"
#define MAX_COLOURS (unsigned int) 200

Kcolourmap setup_cmap ()
/*  This routine will create a Kcolourmap object from a VX display.
    The routine returns a Kcolourmap object.
*/
{
    /*  Declare variables  */
    Kdisplay dpy_handle;
    Kcolourmap cmap;

    /*  Initialise colourmap system  */
    dpy_handle = vc_get_dpy_handle ();
    /*  Create Kcolourmap object  */
    cmap = kcmap_va_create (DEFAULT_COLOURMAP_NAME, MAX_COLOURS, TRUE,
                            dpy_handle, vc_alloc_colours, vc_free_colours,
                            vc_store_colours, vc_get_location,
                            KCMAP_ATT_END);
    return (cmap);
}   /*  End Function setup_cmap  */

Example 3
This example shows how to save a colourmap to a file.


/*----------------------------------------------------------*/
/*  Colourmap save routine:                                 */
/*----------------------------------------------------------*/

#include <karma.h>
#include <karma_kcmap.h>
#include <karma_ds.h>


flag write_cmap (cmap, file)
/*  This routine will write a Kcolourmap object to a file.
    The colourmap must be given by  cmap  .
    The filename must be pointed to by  file  .
    The routine returns TRUE on success, else it returns FALSE.
*/
Kcolourmap cmap;
char *file;
{
    flag ok;
    multi_array *multi_desc;

    multi_desc = ds_alloc_multi (1);
    if ( !kcmap_copy_to_struct (cmap, multi_desc->headers,
                                multi_desc->data) ) return (FALSE);
    ok = dsxfr_put_multi (multi_desc, file);
    multi_desc->headers[0] = NULL;
    multi_desc->data[0] = NULL;
    ds_dealloc_multi (multi_desc);
    return (ok);
}   /*  End Function write_cmap  */

--
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