/***************************************************************************/
/***************************************************************************/
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#include <Xm/Xm.h>
#include "logo50.h"
#include "logo64.h"

struct {
	unsigned char *data;
	int width;
	int height;
} icon_image[] = {
	{ &logo64_bits[0], 64, 64 },
	{ &logo50_bits[0], 50, 50 }
};

static Pixmap wm_icon_pixmap;
static int icon_created = False;

extern Widget w_toplev;
extern Display *display;
extern int depth;
extern Window root_window;


/*
 * create_wm_icon - Create custom icon for use with Mwm.  This routine will
 *                  try to create either a 50x50 icon or a 64x64 icon,
 *                  depending on what size the window manager prefers.
 */
void
create_wm_icon()
{
    XIconSize *list;
    int count;
    Status status;
    int i;
    int j;
    int width;
    int height;

    /* Only create custom icon if window manager is MWM */
    if (!XmIsMotifWMRunning(w_toplev))
        return;

    /* Get window manager's list of preferred icon sizes */
    status = XGetIconSizes(display, root_window, &list, &count);
    if (status == 0)
        return;

    /* See if we can handle one of the preferred sizes */
    for (i=0; i<XtNumber(icon_image); i++)
        for (j=0; j<count; j++) {
            width = icon_image[i].width;
            height = icon_image[i].height;
            if (width >= list[j].min_width &&
                width <= list[j].max_width &&
                (width-list[j].min_width)%list[j].width_inc == 0 &&
                height >= list[j].min_height &&
                height <= list[j].max_height &&
                (height-list[j].min_height)%list[j].height_inc == 0) {
				wm_icon_pixmap = XCreatePixmapFromBitmapData(
			        display,
			        root_window,
			        (char *)icon_image[i].data,
			        icon_image[i].width,
			        icon_image[i].height,
			        BlackPixelOfScreen(XtScreen(w_toplev)),
			        WhitePixelOfScreen(XtScreen(w_toplev)),
			        depth
			    );
                XFree((caddr_t)list);
				icon_created = True;
                return;
            }
        }

    XFree((caddr_t)list);
}


/*
 * attach_wm_icon - Associate the custom Xdir icon to the specified shell
 *                  widget for use by the window manager.  If the window
 *                  manager is not mwm, the association is not made.
 */
void
attach_wm_icon(w_shell)
Widget w_shell;
{
	/* Sanity check */
	if (!XtIsShell(w_shell))
		fatal_error("Bug in attach_wm_icon()");

    /* Only attach custom icon if window manager is MWM */
    if (XmIsMotifWMRunning(w_toplev) || icon_created)
		XtVaSetValues(w_shell, XmNiconPixmap, wm_icon_pixmap, NULL);
}