file: cursor.c


/*
 * cursor.c - This file contains all functions relating to manipulating
 *            the cursor.
 */
#include <X11/cursorfont.h>
#include "crosshair_cursor.h"
#include "crosshair_mask.h"
#include "XmdvTool.h"

Cursor        crosshair_cursor;
Cursor        arrow_cursor;
Cursor        right_arrow_cursor;
Cursor        circle_cursor;

/*
 * CrosshairCursor() - Changes the cursor to a crosshair.
 */
void CrosshairCursor(Widget w)
{
  XDefineCursor(XtDisplay(w), XtWindow(w), crosshair_cursor);
}


/*
 * ArrowCursor() - Restores the cursor to the standard arrow pointer.
 */
void ArrowCursor(Widget w)
{
  XDefineCursor(XtDisplay(w), XtWindow(w), arrow_cursor);
}

/*
 * RightArrowCursor() - Changes the cursor to a right arrow
 */
void RightArrowCursor(Widget w)
{
  XDefineCursor(XtDisplay(w), XtWindow(w), right_arrow_cursor);
}

/*
 * CircleCursor() - Changes the cursor to a circular target
 */
void CircleCursor(Widget w)
{
  XDefineCursor(XtDisplay(w), XtWindow(w), circle_cursor);
}


/*
 * InitCursors() - Initializes and creates the cursor data structures
 */
void InitCursors(Widget w)
{
  Pixmap        cursor_p;
  Pixmap        mask_p;
  XColor        fore_g,back_g;
  
  
  cursor_p = XCreateBitmapFromData(XtDisplay(w), XtWindow(w),
				   crosshair_cursor_bits,
                                   crosshair_cursor_width,
				   crosshair_cursor_height);
  mask_p =   XCreateBitmapFromData(XtDisplay(w), XtWindow(w),
				   crosshair_mask_bits,
                                   crosshair_mask_width,
				   crosshair_mask_height);
  
  fore_g.pixel = WhitePixel(XtDisplay(w), DefaultScreen(XtDisplay(w)));
  back_g.pixel = BlackPixel(XtDisplay(w), DefaultScreen(XtDisplay(w)));
  fore_g.red = fore_g.blue = fore_g.green = 65535;
  back_g.red = back_g.blue = back_g.green = 0;
  fore_g.flags = back_g.flags = DoRed|DoBlue|DoGreen;
  
  crosshair_cursor = XCreatePixmapCursor(XtDisplay(w), cursor_p, mask_p,
					 &fore_g, &back_g,
					 crosshair_cursor_x_hot,
					 crosshair_cursor_y_hot);
  XFreePixmap(XtDisplay(w),cursor_p);
  XFreePixmap(XtDisplay(w),mask_p);

  /* create the standard arrow cursor */
  arrow_cursor = XCreateFontCursor(XtDisplay(w), XC_top_left_arrow);

  /* create a circular target cursor */
  circle_cursor = XCreateFontCursor(XtDisplay(w), XC_target);

  /* create a right arrow cursor */
  right_arrow_cursor = XCreateFontCursor(XtDisplay(w), XC_arrow);
}



Back to Source File Index


C++ to HTML Conversion by ctoohtml