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X11TERM.C
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1992-03-13
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/* -*-C-*-
$Header: /usr/local/scheme/src/microcode/RCS/x11term.c,v 1.20 1992/03/14 00:08:54 cph Exp $
Copyright (c) 1989-92 Massachusetts Institute of Technology
This material was developed by the Scheme project at the Massachusetts
Institute of Technology, Department of Electrical Engineering and
Computer Science. Permission to copy this software, to redistribute
it, and to use it for any purpose is granted, subject to the following
restrictions and understandings.
1. Any copy made of this software must include this copyright notice
in full.
2. Users of this software agree to make their best efforts (a) to
return to the MIT Scheme project any improvements or extensions that
they make, so that these may be included in future releases; and (b)
to inform MIT of noteworthy uses of this software.
3. All materials developed as a consequence of the use of this
software shall duly acknowledge such use, in accordance with the usual
standards of acknowledging credit in academic research.
4. MIT has made no warrantee or representation that the operation of
this software will be error-free, and MIT is under no obligation to
provide any services, by way of maintenance, update, or otherwise.
5. In conjunction with products arising from the use of this material,
there shall be no use of the name of the Massachusetts Institute of
Technology nor of any adaptation thereof in any advertising,
promotional, or sales literature without prior written consent from
MIT in each case. */
/* X11 terminal for Edwin. */
#include "scheme.h"
#include "prims.h"
#include "x11.h"
struct xterm_extra
{
/* Dimensions of the window, in characters. Valid character
coordinates are nonnegative integers strictly less than these
limits. */
unsigned int x_size;
unsigned int y_size;
/* Position of the cursor, in character coordinates. */
unsigned int cursor_x;
unsigned int cursor_y;
/* Character map of the window's contents. See `XTERM_CHAR_LOC' for
the address arithmetic. */
char * character_map;
/* Bit map of the window's highlighting. */
char * highlight_map;
/* Nonzero iff the cursor is drawn on the window. */
char cursor_visible_p;
/* Nonzero iff the cursor should be drawn on the window. */
char cursor_enabled_p;
};
#define XW_EXTRA(xw) ((struct xterm_extra *) ((xw) -> extra))
#define XW_X_CSIZE(xw) ((XW_EXTRA (xw)) -> x_size)
#define XW_Y_CSIZE(xw) ((XW_EXTRA (xw)) -> y_size)
#define XW_CURSOR_X(xw) ((XW_EXTRA (xw)) -> cursor_x)
#define XW_CURSOR_Y(xw) ((XW_EXTRA (xw)) -> cursor_y)
#define XW_CHARACTER_MAP(xw) ((XW_EXTRA (xw)) -> character_map)
#define XW_HIGHLIGHT_MAP(xw) ((XW_EXTRA (xw)) -> highlight_map)
#define XW_CURSOR_VISIBLE_P(xw) ((XW_EXTRA (xw)) -> cursor_visible_p)
#define XW_CURSOR_ENABLED_P(xw) ((XW_EXTRA (xw)) -> cursor_enabled_p)
#define XTERM_CHAR_INDEX(xw, x, y) (((y) * (XW_X_CSIZE (xw))) + (x))
#define XTERM_CHAR_LOC(xw, index) ((XW_CHARACTER_MAP (xw)) + (index))
#define XTERM_CHAR(xw, index) (* (XTERM_CHAR_LOC (xw, index)))
#define XTERM_HL_LOC(xw, index) ((XW_HIGHLIGHT_MAP (xw)) + (index))
#define XTERM_HL(xw, index) (* (XTERM_HL_LOC (xw, index)))
#define XTERM_HL_GC(xw, hl) (hl ? (XW_REVERSE_GC (xw)) : (XW_NORMAL_GC (xw)))
#define HL_ARG(arg) arg_index_integer (arg, 2)
#define RESOURCE_NAME "schemeTerminal"
#define RESOURCE_CLASS "SchemeTerminal"
#define DEFAULT_GEOMETRY "80x40+0+0"
#define BLANK_CHAR ' '
#define DEFAULT_HL 0
#define XTERM_X_PIXEL(xw, x) \
(((x) * (FONT_WIDTH (XW_FONT (xw)))) + (XW_INTERNAL_BORDER_WIDTH (xw)))
#define XTERM_Y_PIXEL(xw, y) \
(((y) * (FONT_HEIGHT (XW_FONT (xw)))) + (XW_INTERNAL_BORDER_WIDTH (xw)))
#define XTERM_DRAW_CHARS(xw, x, y, s, n, gc) \
XDrawImageString \
((XW_DISPLAY (xw)), \
(XW_WINDOW (xw)), \
gc, \
(XTERM_X_PIXEL (xw, x)), \
((XTERM_Y_PIXEL (xw, y)) + (FONT_BASE (XW_FONT (xw)))), \
s, \
n)
#define CURSOR_IN_RECTANGLE(xw, x_start, x_end, y_start, y_end) \
(((x_start) <= (XW_CURSOR_X (xw))) \
&& ((XW_CURSOR_X (xw)) < (x_end)) \
&& ((y_start) <= (XW_CURSOR_Y (xw))) \
&& ((XW_CURSOR_Y (xw)) < (y_end)))
static void
DEFUN (xterm_erase_cursor, (xw), struct xwindow * xw)
{
if (XW_CURSOR_VISIBLE_P (xw))
{
unsigned int x = (XW_CURSOR_X (xw));
unsigned int y = (XW_CURSOR_Y (xw));
unsigned int index = (XTERM_CHAR_INDEX (xw, x, y));
XTERM_DRAW_CHARS
(xw, x, y,
(XTERM_CHAR_LOC (xw, index)),
1,
(XTERM_HL_GC (xw, (XTERM_HL (xw, index)))));
(XW_CURSOR_VISIBLE_P (xw)) = 0;
}
}
static void
DEFUN (xterm_draw_cursor, (xw), struct xwindow * xw)
{
if ((XW_CURSOR_ENABLED_P (xw)) && (! (XW_CURSOR_VISIBLE_P (xw))))
{
unsigned int x = (XW_CURSOR_X (xw));
unsigned int y = (XW_CURSOR_Y (xw));
XTERM_DRAW_CHARS (xw, x, y,
(XTERM_CHAR_LOC (xw, (XTERM_CHAR_INDEX (xw, x, y)))),
1,
(XW_CURSOR_GC (xw)));
(XW_CURSOR_VISIBLE_P (xw)) = 1;
}
}
static void
DEFUN (xterm_process_event, (xw, event),
struct xwindow * xw AND
XEvent * event)
{
}
static XSizeHints *
DEFUN (xterm_make_size_hints, (font, extra),
XFontStruct * font AND
unsigned int extra)
{
XSizeHints * size_hints = (XAllocSizeHints ());
if (size_hints == 0)
error_external_return ();
(size_hints -> flags) = (PResizeInc | PMinSize | PBaseSize);
(size_hints -> width_inc) = (FONT_WIDTH (font));
(size_hints -> height_inc) = (FONT_HEIGHT (font));
(size_hints -> min_width) = extra;
(size_hints -> min_height) = extra;
(size_hints -> base_width) = extra;
(size_hints -> base_height) = extra;
return (size_hints);
}
static void
DEFUN (xterm_set_wm_normal_hints, (xw, size_hints, geometry_mask, x, y),
struct xwindow * xw AND
XSizeHints * size_hints AND
int geometry_mask AND
unsigned int x AND
unsigned int y)
{
(size_hints -> flags) |=
((((geometry_mask & XValue) && (geometry_mask & YValue))
? USPosition : PPosition)
| (((geometry_mask & WidthValue) && (geometry_mask & HeightValue))
? USSize : PSize));
(size_hints -> x) = x;
(size_hints -> y) = y;
(size_hints -> width) =
(((XW_X_CSIZE (xw)) * (size_hints -> width_inc))
+ (size_hints -> base_width));
(size_hints -> height) =
(((XW_Y_CSIZE (xw)) * (size_hints -> height_inc))
+ (size_hints -> base_height));
XSetWMNormalHints ((XW_DISPLAY (xw)), (XW_WINDOW (xw)), size_hints);
XFree ((caddr_t) size_hints);
}
static void
DEFUN (xterm_update_normal_hints, (xw), struct xwindow * xw)
{
xterm_set_wm_normal_hints
(xw,
(xterm_make_size_hints
((XW_FONT (xw)),
(2 * (XW_INTERNAL_BORDER_WIDTH (xw))))),
0, 0, 0);
}
static void
DEFUN (xterm_deallocate, (xw), struct xwindow * xw)
{
free (XW_CHARACTER_MAP (xw));
free (XW_HIGHLIGHT_MAP (xw));
}
static SCHEME_OBJECT
DEFUN (xterm_x_coordinate_map, (xw, x), struct xwindow * xw AND unsigned int x)
{
return (long_to_integer (x / (FONT_WIDTH (XW_FONT (xw)))));
}
static SCHEME_OBJECT
DEFUN (xterm_y_coordinate_map, (xw, y), struct xwindow * xw AND unsigned int y)
{
return (long_to_integer (y / (FONT_HEIGHT (XW_FONT (xw)))));
}
static void
DEFUN (xterm_copy_map_line, (xw, x_start, x_end, y_from, y_to),
struct xwindow * xw AND
unsigned int x_start AND
unsigned int x_end AND
unsigned int y_from AND
unsigned int y_to)
{
{
char * from_scan =
(XTERM_CHAR_LOC (xw, (XTERM_CHAR_INDEX (xw, x_start, y_from))));
char * from_end =
(XTERM_CHAR_LOC (xw, (XTERM_CHAR_INDEX (xw, x_end, y_from))));
char * to_scan =
(XTERM_CHAR_LOC (xw, (XTERM_CHAR_INDEX (xw, x_start, y_to))));
while (from_scan < from_end)
(*to_scan++) = (*from_scan++);
}
{
char * from_scan =
(XTERM_HL_LOC (xw, (XTERM_CHAR_INDEX (xw, x_start, y_from))));
char * from_end =
(XTERM_HL_LOC (xw, (XTERM_CHAR_INDEX (xw, x_end, y_from))));
char * to_scan =
(XTERM_HL_LOC (xw, (XTERM_CHAR_INDEX (xw, x_start, y_to))));
while (from_scan < from_end)
(*to_scan++) = (*from_scan++);
}
}
static void
DEFUN (xterm_dump_contents, (xw, x_start, x_end, y_start, y_end),
struct xwindow * xw AND
unsigned int x_start AND
unsigned int x_end AND
unsigned int y_start AND
unsigned int y_end)
{
char * character_map = (XW_CHARACTER_MAP (xw));
char * highlight_map = (XW_HIGHLIGHT_MAP (xw));
if (x_start < x_end)
{
unsigned int yi;
for (yi = y_start; (yi < y_end); yi += 1)
{
unsigned int index = (XTERM_CHAR_INDEX (xw, 0, yi));
char * line_char = (&character_map[index]);
char * line_hl = (&highlight_map[index]);
unsigned int xi = x_start;
while (1)
{
unsigned int hl = (line_hl[xi]);
unsigned int xj = (xi + 1);
while ((xj < x_end) && ((line_hl[xj]) == hl))
xj += 1;
XTERM_DRAW_CHARS (xw, xi, yi,
(&line_char[xi]),
(xj - xi),
(XTERM_HL_GC (xw, hl)));
if (xj == x_end)
break;
xi = xj;
}
}
if (CURSOR_IN_RECTANGLE (xw, x_start, x_end, y_start, y_end))
{
(XW_CURSOR_VISIBLE_P (xw)) = 0;
xterm_draw_cursor (xw);
}
}
}
static void
DEFUN (xterm_dump_rectangle, (xw, x, y, width, height),
struct xwindow * xw AND
unsigned int x AND
unsigned int y AND
unsigned int width AND
unsigned int height)
{
XFontStruct * font = (XW_FONT (xw));
unsigned int fwidth = (FONT_WIDTH (font));
unsigned int fheight = (FONT_HEIGHT (font));
unsigned int border = (XW_INTERNAL_BORDER_WIDTH (xw));
if (x < border)
{
width -= (border - x);
x = 0;
}
else
x -= border;
if ((x + width) > (XW_X_SIZE (xw)))
width = ((XW_X_SIZE (xw)) - x);
if (y < border)
{
height -= (border - y);
y = 0;
}
else
y -= border;
if ((y + height) > (XW_Y_SIZE (xw)))
height = ((XW_Y_SIZE (xw)) - y);
xterm_dump_contents (xw,
(x / fwidth),
(((x + width) + (fwidth - 1)) / fwidth),
(y / fheight),
(((y + height) + (fheight - 1)) / fheight));
XFlush (XW_DISPLAY (xw));
}
#define MIN(x, y) (((x) < (y)) ? (x) : (y))
static void
DEFUN (xterm_reconfigure, (xw, width, height),
struct xwindow * xw AND
unsigned int width AND
unsigned int height)
{
unsigned int extra = (2 * (XW_INTERNAL_BORDER_WIDTH (xw)));
unsigned int x_size = ((width < extra) ? 0 : (width - extra));
unsigned int y_size = ((height < extra) ? 0 : (height - extra));
if ((x_size != (XW_X_SIZE (xw))) || (y_size != (XW_Y_SIZE (xw))))
{
unsigned int x_csize = (x_size / (FONT_WIDTH (XW_FONT (xw))));
unsigned int y_csize = (y_size / (FONT_HEIGHT (XW_FONT (xw))));
char * new_char_map = (x_malloc (x_csize * y_csize));
char * new_hl_map = (x_malloc (x_csize * y_csize));
unsigned int old_x_csize = (XW_X_CSIZE (xw));
unsigned int min_x_csize = (MIN (x_csize, old_x_csize));
unsigned int min_y_csize = (MIN (y_csize, (XW_Y_CSIZE (xw))));
int x_clipped = (old_x_csize - x_csize);
char * new_scan_char = new_char_map;
char * new_scan_hl = new_hl_map;
char * new_end;
char * old_scan_char = (XW_CHARACTER_MAP (xw));
char * old_scan_hl = (XW_HIGHLIGHT_MAP (xw));
char * old_end;
unsigned int new_y = 0;
for (; (new_y < min_y_csize); new_y += 1)
{
old_end = (old_scan_char + min_x_csize);
while (old_scan_char < old_end)
{
(*new_scan_char++) = (*old_scan_char++);
(*new_scan_hl++) = (*old_scan_hl++);
}
if (x_clipped < 0)
{
new_end = (new_scan_char + ((unsigned int) (- x_clipped)));
while (new_scan_char < new_end)
{
(*new_scan_char++) = BLANK_CHAR;
(*new_scan_hl++) = DEFAULT_HL;
}
}
else if (x_clipped > 0)
{
old_scan_char += ((unsigned int) x_clipped);
old_scan_hl += ((unsigned int) x_clipped);
}
}
for (; (new_y < y_csize); new_y += 1)
{
new_end = (new_scan_char + x_csize);
while (new_scan_char < new_end)
{
(*new_scan_char++) = BLANK_CHAR;
(*new_scan_hl++) = DEFAULT_HL;
}
}
free (XW_CHARACTER_MAP (xw));
free (XW_HIGHLIGHT_MAP (xw));
(XW_X_SIZE (xw)) = x_size;
(XW_Y_SIZE (xw)) = y_size;
(XW_CLIP_X (xw)) = 0;
(XW_CLIP_Y (xw)) = 0;
(XW_CLIP_WIDTH (xw)) = x_size;
(XW_CLIP_HEIGHT (xw)) = y_size;
(XW_X_CSIZE (xw)) = x_csize;
(XW_Y_CSIZE (xw)) = y_csize;
(XW_CHARACTER_MAP (xw))= new_char_map;
(XW_HIGHLIGHT_MAP (xw))= new_hl_map;
xterm_dump_contents (xw, 0, 0, x_csize, y_csize);
xterm_update_normal_hints (xw);
XFlush (XW_DISPLAY (xw));
}
}
DEFINE_PRIMITIVE ("XTERM-RECONFIGURE", Prim_xterm_reconfigure, 3, 3, 0)
{
PRIMITIVE_HEADER (3);
xterm_reconfigure ((x_window_arg (1)),
(arg_nonnegative_integer (2)),
(arg_nonnegative_integer (3)));
PRIMITIVE_RETURN (UNSPECIFIC);
}
DEFINE_PRIMITIVE ("XTERM-DUMP-RECTANGLE", Prim_xterm_dump_rectangle, 5, 5, 0)
{
PRIMITIVE_HEADER (5);
xterm_dump_rectangle ((x_window_arg (1)),
(arg_nonnegative_integer (2)),
(arg_nonnegative_integer (3)),
(arg_nonnegative_integer (4)),
(arg_nonnegative_integer (5)));
PRIMITIVE_RETURN (UNSPECIFIC);
}
DEFINE_PRIMITIVE ("XTERM-MAP-X-COORDINATE", Prim_xterm_map_x_coordinate, 2, 2, 0)
{
PRIMITIVE_HEADER (2);
{
struct xwindow * xw = (x_window_arg (1));
unsigned int xp = (arg_nonnegative_integer (2));
int bx = (xp - (XW_INTERNAL_BORDER_WIDTH (xw)));
PRIMITIVE_RETURN
(long_to_integer
(((bx < 0) ? 0
: (bx >= (XW_X_SIZE (xw))) ? ((XW_X_SIZE (xw)) - 1)
: bx)
/ (FONT_WIDTH (XW_FONT (xw)))));
}
}
DEFINE_PRIMITIVE ("XTERM-MAP-Y-COORDINATE", Prim_xterm_map_y_coordinate, 2, 2, 0)
{
PRIMITIVE_HEADER (2);
{
struct xwindow * xw = (x_window_arg (1));
unsigned int yp = (arg_nonnegative_integer (2));
int by = (yp - (XW_INTERNAL_BORDER_WIDTH (xw)));
PRIMITIVE_RETURN
(long_to_integer
(((by < 0) ? 0
: (by >= (XW_Y_SIZE (xw))) ? ((XW_Y_SIZE (xw)) - 1)
: by)
/ (FONT_HEIGHT (XW_FONT (xw)))));
}
}
DEFINE_PRIMITIVE ("XTERM-MAP-X-SIZE", Prim_xterm_map_x_size, 2, 2, 0)
{
PRIMITIVE_HEADER (2);
{
struct xwindow * xw = (x_window_arg (1));
int width =
((arg_nonnegative_integer (2)) - (2 * (XW_INTERNAL_BORDER_WIDTH (xw))));
PRIMITIVE_RETURN
(long_to_integer
((width < 0) ? 0 : (width / (FONT_WIDTH (XW_FONT (xw))))));
}
}
DEFINE_PRIMITIVE ("XTERM-MAP-Y-SIZE", Prim_xterm_map_y_size, 2, 2, 0)
{
PRIMITIVE_HEADER (2);
{
struct xwindow * xw = (x_window_arg (1));
int height =
((arg_nonnegative_integer (2)) - (2 * (XW_INTERNAL_BORDER_WIDTH (xw))));
PRIMITIVE_RETURN
(long_to_integer
((height < 0) ? 0 : (height / (FONT_HEIGHT (XW_FONT (xw))))));
}
}
DEFINE_PRIMITIVE ("XTERM-OPEN-WINDOW", Prim_xterm_open_window, 3, 3, 0)
{
PRIMITIVE_HEADER (3);
{
struct xdisplay * xd = (x_display_arg (1));
Display * display = (XD_DISPLAY (xd));
struct drawing_attributes attributes;
struct xwindow_methods methods;
CONST char * resource_name = RESOURCE_NAME;
CONST char * resource_class = RESOURCE_CLASS;
int map_p;
x_decode_window_map_arg
((ARG_REF (3)), (&resource_name), (&resource_class), (&map_p));
x_default_attributes
(display, resource_name, resource_class, (&attributes));
(methods . deallocator) = xterm_deallocate;
(methods . event_processor) = xterm_process_event;
(methods . x_coordinate_map) = xterm_x_coordinate_map;
(methods . y_coordinate_map) = xterm_y_coordinate_map;
(methods . update_normal_hints) = xterm_update_normal_hints;
{
unsigned int extra = (2 * (attributes . internal_border_width));
int x_pos;
int y_pos;
int x_size;
int y_size;
XSizeHints * size_hints =
(xterm_make_size_hints ((attributes . font), extra));
int geometry_mask =
(XWMGeometry
(display,
(DefaultScreen (display)),
(((ARG_REF (2)) == SHARP_F)
? (x_get_default
(display, resource_name, resource_class,
"geometry", "Geometry", 0))
: (STRING_ARG (2))),
DEFAULT_GEOMETRY,
(attributes . border_width),
size_hints,
(&x_pos), (&y_pos), (&x_size), (&y_size),
(& (size_hints -> win_gravity))));
unsigned int x_csize =
((x_size - (size_hints -> base_width)) / (size_hints -> width_inc));
unsigned int y_csize =
((y_size - (size_hints -> base_height)) / (size_hints -> height_inc));
Window window =
(XCreateSimpleWindow
(display, (RootWindow (display, (DefaultScreen (display)))),
x_pos, y_pos, x_size, y_size,
(attributes . border_width),
(attributes . border_pixel),
(attributes . background_pixel)));
if (window == 0)
error_external_return ();
{
struct xwindow * xw =
(x_make_window
(xd,
window,
(x_size - (size_hints -> base_width)),
(y_size - (size_hints -> base_height)),
(&attributes),
(&methods),
(sizeof (struct xterm_extra))));
unsigned int map_size = (x_csize * y_csize);
(XW_X_CSIZE (xw)) = x_csize;
(XW_Y_CSIZE (xw)) = y_csize;
(XW_CURSOR_X (xw)) = 0;
(XW_CURSOR_Y (xw)) = 0;
(XW_CURSOR_VISIBLE_P (xw)) = 0;
(XW_CURSOR_ENABLED_P (xw)) = 1;
{
char * scan = (x_malloc (map_size));
char * end = (scan + map_size);
(XW_CHARACTER_MAP (xw)) = scan;
while (scan < end)
(*scan++) = BLANK_CHAR;
}
{
char * scan = (x_malloc (map_size));
char * end = (scan + map_size);
(XW_HIGHLIGHT_MAP (xw)) = scan;
while (scan < end)
(*scan++) = DEFAULT_HL;
}
(size_hints -> flags) |= PWinGravity;
xterm_set_wm_normal_hints
(xw, size_hints, geometry_mask, x_pos, y_pos);
xw_set_wm_input_hint (xw, 1);
xw_set_wm_name (xw, "scheme-terminal");
xw_set_wm_icon_name (xw, "scheme-terminal");
xw_make_window_map (xw, resource_name, resource_class, map_p);
PRIMITIVE_RETURN (XW_TO_OBJECT (xw));
}
}
}
}
DEFINE_PRIMITIVE ("XTERM-X-SIZE", Prim_xterm_x_size, 1, 1, 0)
{
PRIMITIVE_HEADER (1);
PRIMITIVE_RETURN (long_to_integer (XW_X_CSIZE (x_window_arg (1))));
}
DEFINE_PRIMITIVE ("XTERM-Y-SIZE", Prim_xterm_y_size, 1, 1, 0)
{
PRIMITIVE_HEADER (1);
PRIMITIVE_RETURN (long_to_integer (XW_Y_CSIZE (x_window_arg (1))));
}
DEFINE_PRIMITIVE ("XTERM-SET-SIZE", Prim_xterm_set_size, 3, 3, 0)
{
struct xwindow * xw;
int extra;
XFontStruct * font;
PRIMITIVE_HEADER (3);
xw = (x_window_arg (1));
extra = (2 * (XW_INTERNAL_BORDER_WIDTH (xw)));
font = (XW_FONT (xw));
XResizeWindow
((XW_DISPLAY (xw)),
(XW_WINDOW (xw)),
(((arg_nonnegative_integer (2)) * (FONT_WIDTH (font))) + extra),
(((arg_nonnegative_integer (3)) * (FONT_HEIGHT (font))) + extra));
PRIMITIVE_RETURN (UNSPECIFIC);
}
DEFINE_PRIMITIVE ("XTERM-ENABLE-CURSOR", Prim_xterm_enable_cursor, 2, 2, 0)
{
PRIMITIVE_HEADER (2);
(XW_CURSOR_ENABLED_P (x_window_arg (1))) = (BOOLEAN_ARG (2));
PRIMITIVE_RETURN (UNSPECIFIC);
}
DEFINE_PRIMITIVE ("XTERM-ERASE-CURSOR", Prim_xterm_erase_cursor, 1, 1, 0)
{
PRIMITIVE_HEADER (1);
xterm_erase_cursor (x_window_arg (1));
PRIMITIVE_RETURN (UNSPECIFIC);
}
DEFINE_PRIMITIVE ("XTERM-DRAW-CURSOR", Prim_xterm_draw_cursor, 1, 1, 0)
{
PRIMITIVE_HEADER (1);
xterm_draw_cursor (x_window_arg (1));
PRIMITIVE_RETURN (UNSPECIFIC);
}
DEFINE_PRIMITIVE ("XTERM-WRITE-CURSOR!", Prim_xterm_write_cursor, 3, 3, 0)
{
PRIMITIVE_HEADER (3);
{
struct xwindow * xw = (x_window_arg (1));
unsigned int x = (arg_index_integer (2, (XW_X_CSIZE (xw))));
unsigned int y = (arg_index_integer (3, (XW_Y_CSIZE (xw))));
if ((x != (XW_CURSOR_X (xw))) || (y != (XW_CURSOR_Y (xw))))
{
xterm_erase_cursor (xw);
(XW_CURSOR_X (xw)) = x;
(XW_CURSOR_Y (xw)) = y;
}
xterm_draw_cursor (xw);
}
PRIMITIVE_RETURN (UNSPECIFIC);
}
DEFINE_PRIMITIVE ("XTERM-WRITE-CHAR!", Prim_xterm_write_char, 5, 5, 0)
{
PRIMITIVE_HEADER (5);
{
struct xwindow * xw = (x_window_arg (1));
unsigned int x = (arg_index_integer (2, (XW_X_CSIZE (xw))));
unsigned int y = (arg_index_integer (3, (XW_Y_CSIZE (xw))));
int c = (arg_ascii_char (4));
unsigned int hl = (HL_ARG (5));
unsigned int index = (XTERM_CHAR_INDEX (xw, x, y));
char * map_ptr = (XTERM_CHAR_LOC (xw, index));
(*map_ptr) = c;
(XTERM_HL (xw, index)) = hl;
XTERM_DRAW_CHARS (xw, x, y, map_ptr, 1, (XTERM_HL_GC (xw, (xw, hl))));
if (((XW_CURSOR_X (xw)) == x) && ((XW_CURSOR_Y (xw)) == y))
{
(XW_CURSOR_VISIBLE_P (xw)) = 0;
xterm_draw_cursor (xw);
}
}
PRIMITIVE_RETURN (UNSPECIFIC);
}
DEFINE_PRIMITIVE ("XTERM-WRITE-SUBSTRING!", Prim_xterm_write_substring, 7, 7, 0)
{
PRIMITIVE_HEADER (7);
CHECK_ARG (4, STRING_P);
{
struct xwindow * xw = (x_window_arg (1));
unsigned int x = (arg_index_integer (2, (XW_X_CSIZE (xw))));
unsigned int y = (arg_index_integer (3, (XW_Y_CSIZE (xw))));
SCHEME_OBJECT string = (ARG_REF (4));
unsigned int end = (arg_index_integer (6, ((STRING_LENGTH (string)) + 1)));
unsigned int start = (arg_index_integer (5, (end + 1)));
unsigned int hl = (HL_ARG (7));
unsigned int length = (end - start);
unsigned int index = (XTERM_CHAR_INDEX (xw, x, y));
if ((x + length) > (XW_X_CSIZE (xw)))
error_bad_range_arg (2);
{
unsigned char * string_scan = (STRING_LOC (string, start));
unsigned char * string_end = (STRING_LOC (string, end));
char * char_scan = (XTERM_CHAR_LOC (xw, index));
char * hl_scan = (XTERM_HL_LOC (xw, index));
while (string_scan < string_end)
{
(*char_scan++) = (*string_scan++);
(*hl_scan++) = hl;
}
}
XTERM_DRAW_CHARS
(xw, x, y, (XTERM_CHAR_LOC (xw, index)), length, (XTERM_HL_GC (xw, hl)));
if ((x <= (XW_CURSOR_X (xw))) && ((XW_CURSOR_X (xw)) < (x + length))
&& (y == (XW_CURSOR_Y (xw))))
{
(XW_CURSOR_VISIBLE_P (xw)) = 0;
xterm_draw_cursor (xw);
}
}
PRIMITIVE_RETURN (UNSPECIFIC);
}
static void
DEFUN (xterm_clear_rectangle, (xw, x_start, x_end, y_start, y_end, hl),
struct xwindow * xw AND
unsigned int x_start AND
unsigned int x_end AND
unsigned int y_start AND
unsigned int y_end AND
unsigned int hl)
{
unsigned int x_length = (x_end - x_start);
unsigned int y;
for (y = y_start; (y < y_end); y += 1)
{
unsigned int index = (XTERM_CHAR_INDEX (xw, x_start, y));
{
char * scan = (XTERM_CHAR_LOC (xw, index));
char * end = (scan + x_length);
while (scan < end)
(*scan++) = BLANK_CHAR;
}
{
char * scan = (XTERM_HL_LOC (xw, index));
char * end = (scan + x_length);
while (scan < end)
(*scan++) = hl;
}
}
if (hl == 0)
XClearArea ((XW_DISPLAY (xw)),
(XW_WINDOW (xw)),
(XTERM_X_PIXEL (xw, x_start)),
(XTERM_Y_PIXEL (xw, y_start)),
(x_length * (FONT_WIDTH (XW_FONT (xw)))),
((y_end - y_start) * (FONT_HEIGHT (XW_FONT (xw)))),
False);
else
{
GC hl_gc = (XTERM_HL_GC (xw, hl));
for (y = y_start; (y < y_end); y += 1)
XTERM_DRAW_CHARS
(xw, x_start, y,
(XTERM_CHAR_LOC (xw, (XTERM_CHAR_INDEX (xw, x_start, y)))),
x_length, hl_gc);
}
}
DEFINE_PRIMITIVE ("XTERM-CLEAR-RECTANGLE!", Prim_xterm_clear_rectangle, 6, 6, 0)
{
PRIMITIVE_HEADER (6);
{
struct xwindow * xw = (x_window_arg (1));
unsigned int x_end = (arg_index_integer (3, ((XW_X_CSIZE (xw)) + 1)));
unsigned int y_end = (arg_index_integer (5, ((XW_Y_CSIZE (xw)) + 1)));
unsigned int x_start = (arg_index_integer (2, (x_end + 1)));
unsigned int y_start = (arg_index_integer (4, (y_end + 1)));
unsigned int hl = (HL_ARG (6));
if ((x_start < x_end) && (y_start < y_end))
{
xterm_clear_rectangle (xw, x_start, x_end, y_start, y_end, hl);
if (CURSOR_IN_RECTANGLE (xw, x_start, x_end, y_start, y_end))
{
(XW_CURSOR_VISIBLE_P (xw)) = 0;
xterm_draw_cursor (xw);
}
}
}
PRIMITIVE_RETURN (UNSPECIFIC);
}
static void
DEFUN (xterm_scroll_lines_up, (xw, x_start, x_end, y_start, y_end, lines),
struct xwindow * xw AND
unsigned int x_start AND
unsigned int x_end AND
unsigned int y_start AND
unsigned int y_end AND
unsigned int lines)
{
{
unsigned int y_to = y_start;
unsigned int y_from = (y_to + lines);
while (y_from < y_end)
xterm_copy_map_line (xw, x_start, x_end, (y_from++), (y_to++));
}
XCopyArea ((XW_DISPLAY (xw)),
(XW_WINDOW (xw)),
(XW_WINDOW (xw)),
(XW_NORMAL_GC (xw)),
(XTERM_X_PIXEL (xw, x_start)),
(XTERM_Y_PIXEL (xw, (y_start + lines))),
((x_end - x_start) * (FONT_WIDTH (XW_FONT (xw)))),
(((y_end - y_start) - lines) * (FONT_HEIGHT (XW_FONT (xw)))),
(XTERM_X_PIXEL (xw, x_start)),
(XTERM_Y_PIXEL (xw, y_start)));
}
DEFINE_PRIMITIVE ("XTERM-SCROLL-LINES-UP", Prim_xterm_scroll_lines_up, 6, 6,
"(XTERM-SCROLL-LINES-UP XTERM X-START X-END Y-START Y-END LINES)\n\
Scroll the contents of the region up by LINES.")
{
PRIMITIVE_HEADER (6);
{
struct xwindow * xw = (x_window_arg (1));
unsigned int x_end = (arg_index_integer (3, ((XW_X_CSIZE (xw)) + 1)));
unsigned int x_start = (arg_index_integer (2, (x_end + 1)));
unsigned int y_end = (arg_index_integer (5, ((XW_Y_CSIZE (xw)) + 1)));
unsigned int y_start = (arg_index_integer (4, (y_end + 1)));
unsigned int lines = (arg_index_integer (6, (y_end - y_start)));
if ((0 < lines) && (x_start < x_end) && (y_start < y_end))
{
if (CURSOR_IN_RECTANGLE (xw, x_start, x_end, (y_start + lines), y_end))
{
xterm_erase_cursor (xw);
xterm_scroll_lines_up (xw, x_start, x_end, y_start, y_end, lines);
xterm_draw_cursor (xw);
}
else
{
xterm_scroll_lines_up (xw, x_start, x_end, y_start, y_end, lines);
if (CURSOR_IN_RECTANGLE
(xw, x_start, x_end, y_start, (y_end - lines)))
{
(XW_CURSOR_VISIBLE_P (xw)) = 0;
xterm_draw_cursor (xw);
}
}
}
}
PRIMITIVE_RETURN (UNSPECIFIC);
}
static void
DEFUN (xterm_scroll_lines_down, (xw, x_start, x_end, y_start, y_end, lines),
struct xwindow * xw AND
unsigned int x_start AND
unsigned int x_end AND
unsigned int y_start AND
unsigned int y_end AND
unsigned int lines)
{
{
unsigned int y_to = y_end;
unsigned int y_from = (y_to - lines);
while (y_from > y_start)
xterm_copy_map_line (xw, x_start, x_end, (--y_from), (--y_to));
}
XCopyArea ((XW_DISPLAY (xw)),
(XW_WINDOW (xw)),
(XW_WINDOW (xw)),
(XW_NORMAL_GC (xw)),
(XTERM_X_PIXEL (xw, x_start)),
(XTERM_Y_PIXEL (xw, y_start)),
((x_end - x_start) * (FONT_WIDTH (XW_FONT (xw)))),
(((y_end - y_start) - lines) * (FONT_HEIGHT (XW_FONT (xw)))),
(XTERM_X_PIXEL (xw, x_start)),
(XTERM_Y_PIXEL (xw, (y_start + lines))));
}
DEFINE_PRIMITIVE ("XTERM-SCROLL-LINES-DOWN", Prim_xterm_scroll_lines_down, 6, 6,
"(XTERM-SCROLL-LINES-DOWN XTERM X-START X-END Y-START Y-END LINES)\n\
Scroll the contents of the region down by LINES.")
{
PRIMITIVE_HEADER (6);
{
struct xwindow * xw = (x_window_arg (1));
unsigned int x_end = (arg_index_integer (3, ((XW_X_CSIZE (xw)) + 1)));
unsigned int x_start = (arg_index_integer (2, (x_end + 1)));
unsigned int y_end = (arg_index_integer (5, ((XW_Y_CSIZE (xw)) + 1)));
unsigned int y_start = (arg_index_integer (4, (y_end + 1)));
unsigned int lines = (arg_index_integer (6, (y_end - y_start)));
if ((0 < lines) && (x_start < x_end) && (y_start < y_end))
{
if (CURSOR_IN_RECTANGLE (xw, x_start, x_end, y_start, (y_end - lines)))
{
xterm_erase_cursor (xw);
xterm_scroll_lines_down
(xw, x_start, x_end, y_start, y_end, lines);
xterm_draw_cursor (xw);
}
else
{
xterm_scroll_lines_down
(xw, x_start, x_end, y_start, y_end, lines);
if (CURSOR_IN_RECTANGLE
(xw, x_start, x_end, (y_start + lines), y_end))
{
(XW_CURSOR_VISIBLE_P (xw)) = 0;
xterm_draw_cursor (xw);
}
}
}
}
PRIMITIVE_RETURN (UNSPECIFIC);
}
DEFINE_PRIMITIVE ("XTERM-SAVE-CONTENTS", Prim_xterm_save_contents, 5, 5,
"(XTERM-SAVE-CONTENTS XW X-START X-END Y-START Y-END)\n\
Get the contents of the terminal screen rectangle as a string.\n\
The string contains alternating (CHARACTER, HIGHLIGHT) pairs.\n\
The pairs are organized in row-major order from (X-START, Y-START).")
{
PRIMITIVE_HEADER (5);
{
struct xwindow * xw = (x_window_arg (1));
unsigned int x_end = (arg_index_integer (3, ((XW_X_CSIZE (xw)) + 1)));
unsigned int y_end = (arg_index_integer (5, ((XW_Y_CSIZE (xw)) + 1)));
unsigned int x_start = (arg_index_integer (2, (x_end + 1)));
unsigned int y_start = (arg_index_integer (4, (y_end + 1)));
unsigned int x_length = (x_end - x_start);
unsigned int string_length = (2 * x_length * (y_end - y_start));
SCHEME_OBJECT string = (allocate_string (string_length));
if (string_length > 0)
{
char * string_scan = ((char *) (STRING_LOC (string, 0)));
unsigned int y;
for (y = y_start; (y < y_end); y += 1)
{
unsigned int index = (XTERM_CHAR_INDEX (xw, x_start, y));
char * char_scan = (XTERM_CHAR_LOC (xw, index));
char * char_end = (char_scan + x_length);
char * hl_scan = (XTERM_HL_LOC (xw, index));
while (char_scan < char_end)
{
(*string_scan++) = (*char_scan++);
(*string_scan++) = (*hl_scan++);
}
}
}
PRIMITIVE_RETURN (string);
}
}
DEFINE_PRIMITIVE ("XTERM-RESTORE-CONTENTS", Prim_xterm_restore_contents, 6, 6,
"(xterm-restore-contents xterm x-start x-end y-start y-end contents)\n\
Replace the terminal screen rectangle with CONTENTS.\n\
See `XTERM-SCREEN-CONTENTS' for the format of CONTENTS.")
{
PRIMITIVE_HEADER (6);
CHECK_ARG (6, STRING_P);
{
struct xwindow * xw = (x_window_arg (1));
unsigned int x_end = (arg_index_integer (3, ((XW_X_CSIZE (xw)) + 1)));
unsigned int y_end = (arg_index_integer (5, ((XW_Y_CSIZE (xw)) + 1)));
unsigned int x_start = (arg_index_integer (2, (x_end + 1)));
unsigned int y_start = (arg_index_integer (4, (y_end + 1)));
unsigned int x_length = (x_end - x_start);
unsigned int string_length = (2 * x_length * (y_end - y_start));
SCHEME_OBJECT string = (ARG_REF (6));
if ((STRING_LENGTH (string)) != string_length)
error_bad_range_arg (6);
if (string_length > 0)
{
char * string_scan = ((char *) (STRING_LOC (string, 0)));
unsigned int y;
for (y = y_start; (y < y_end); y += 1)
{
unsigned int index = (XTERM_CHAR_INDEX (xw, x_start, y));
char * char_scan = (XTERM_CHAR_LOC (xw, index));
char * char_end = (char_scan + x_length);
char * hl_scan = (XTERM_HL_LOC (xw, index));
while (char_scan < char_end)
{
(*char_scan++) = (*string_scan++);
(*hl_scan++) = (*string_scan++);
}
}
xterm_dump_contents (xw, x_start, x_end, y_start, y_end);
}
}
PRIMITIVE_RETURN (UNSPECIFIC);
}