CMAP(1) CMAP(1)
26 Jul 1993
NAME
Cmap - Cmap Widget
DESCRIPTION
#include "Cmap.h"
The cmap widget is an X toolkit compatible widget that displays the
entries in the colormap of its XtNcolormap resource. It also has an
indicator box, and a label displaying the rgb components of the
indicated box.
WIDGET CLASS
cmapWidgetClass
RESOURCES
XtNforeground
foreground pixel of the widget, default is XtDefaultForeground.
XtNfont
font of label (XFontStruct), default is XtDefaultFont.
XtNmargin
minimum margin around widget (int), default is 5.
XtNchangeCallback
change callback, default is NULL.
XtNboxWidth
maximum box width (int), 0 for autoscale/autosize, default is 0
XtNboxHeight
maximum box height (int), 0 for autoscale/autosize, default is 0
XtNselected
current box where the indicator box is at (int), default is 0
XtNfirstIndex
first index to use in colormap (int), default is 0
XtNlastIndex
last index to use in colomrap (int), default is LastIndexDefault
(use last possible index)
XtNmappingTable
a list of indices (Pixel *) that is used to map the currently
selected index into this table of pixels
ACTIONS
select()
accepts key/button/motion events, moving the indicator box to the
square that the pointer is over
- 1 - Formatted: October 26, 2025
CMAP(1) CMAP(1)
26 Jul 1993
up() moves indicator up one box (autowrap)
down()
moves indicator down one box (autowrap)
left()
moves indicator left one box (autowrap)
right()
moves indicator right one box (autowrap)
DEFAULT TRANSLATIONS
<key>h: left()
<key>j: up()
<key>k: down()
<key>l: right()
<Btn1Down>: select()
<Btn1Motion>: select()
CALLBACK STRUCTURE
typedef struct _CmapCallbackStruct
{
int reason;
XEvent *event;
XColor color;
} CmapCallbackStruct, *CmapCallbackPtr;
REASONS
CMAP_SELECT
CMAP_LEFT
CMAP_DOWN
CMAP_UP
CMAP_RIGHT
CMAP_VERIFY
CALLABLE FUNCTIONS
void CmapCheckSelectedColor(Widget _w, Boolean _notify);
function to make sure the pixel of the box with the indicator box
actually matches the rgb values. _notify is a flag on whether a
callback should be sent.
XColor CmapGetSelected(Widget _w);
get components of box with indicator.
AUTHOR
John L. Cwikla, 1993
Wolfram Research, Inc
cwikla@wri.com
- 2 - Formatted: October 26, 2025
