#include <config.h>
#include <stdio.h>
#include "lisp.h"
#include "frame.h"
#include "window.h"
#include "dispextern.h"
#include "buffer.h"
#include "blockinput.h"
#ifdef HAVE_WINDOW_SYSTEM
extern Lisp_Object Qfringe;
extern Lisp_Object Qtop, Qbottom, Qcenter;
extern Lisp_Object Qup, Qdown, Qleft, Qright;
Lisp_Object Voverflow_newline_into_fringe;
Lisp_Object Vfringe_bitmaps;
extern Lisp_Object Qunknown;
Lisp_Object Qtruncation, Qcontinuation, Qoverlay_arrow;
Lisp_Object Qempty_line, Qtop_bottom;
extern Lisp_Object Qbar, Qhbar, Qbox, Qhollow;
Lisp_Object Qhollow_small;
enum fringe_bitmap_align
{
ALIGN_BITMAP_CENTER = 0,
ALIGN_BITMAP_TOP,
ALIGN_BITMAP_BOTTOM
};
struct fringe_bitmap
{
unsigned short *bits;
unsigned height : 8;
unsigned width : 8;
unsigned period : 8;
unsigned align : 2;
unsigned dynamic : 1;
};
static unsigned short question_mark_bits[] = {
0x3c, 0x7e, 0x7e, 0x0c, 0x18, 0x18, 0x00, 0x18, 0x18};
static unsigned short left_arrow_bits[] = {
0x18, 0x30, 0x60, 0xfc, 0xfc, 0x60, 0x30, 0x18};
static unsigned short right_arrow_bits[] = {
0x18, 0x0c, 0x06, 0x3f, 0x3f, 0x06, 0x0c, 0x18};
static unsigned short up_arrow_bits[] = {
0x18, 0x3c, 0x7e, 0xff, 0x18, 0x18, 0x18, 0x18};
static unsigned short down_arrow_bits[] = {
0x18, 0x18, 0x18, 0x18, 0xff, 0x7e, 0x3c, 0x18};
static unsigned short left_curly_arrow_bits[] = {
0x3c, 0x7c, 0xc0, 0xe4, 0xfc, 0x7c, 0x3c, 0x7c};
static unsigned short right_curly_arrow_bits[] = {
0x3c, 0x3e, 0x03, 0x27, 0x3f, 0x3e, 0x3c, 0x3e};
static unsigned short left_triangle_bits[] = {
0x03, 0x0f, 0x1f, 0x3f, 0x3f, 0x1f, 0x0f, 0x03};
static unsigned short right_triangle_bits[] = {
0xc0, 0xf0, 0xf8, 0xfc, 0xfc, 0xf8, 0xf0, 0xc0};
static unsigned short top_left_angle_bits[] = {
0xfc, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0x00};
static unsigned short top_right_angle_bits[] = {
0x3f, 0x3f, 0x03, 0x03, 0x03, 0x03, 0x03, 0x00};
static unsigned short bottom_left_angle_bits[] = {
0x00, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xfc};
static unsigned short bottom_right_angle_bits[] = {
0x00, 0x03, 0x03, 0x03, 0x03, 0x03, 0x3f, 0x3f};
static unsigned short left_bracket_bits[] = {
0xfc, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xfc};
static unsigned short right_bracket_bits[] = {
0x3f, 0x3f, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x3f, 0x3f};
static unsigned short filled_rectangle_bits[] = {
0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe};
static unsigned short hollow_rectangle_bits[] = {
0xfe, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0xfe};
static unsigned short hollow_square_bits[] = {
0x7e, 0x42, 0x42, 0x42, 0x42, 0x7e};
static unsigned short filled_square_bits[] = {
0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e};
static unsigned short vertical_bar_bits[] = {
0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0};
static unsigned short horizontal_bar_bits[] = {
0xfe, 0xfe};
static unsigned short empty_line_bits[] = {
0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00,
0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00,
0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00,
0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00,
0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00,
0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00,
0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00,
0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00};
#define BYTES_PER_BITMAP_ROW (sizeof (unsigned short))
#define STANDARD_BITMAP_HEIGHT(bits) (sizeof (bits)/BYTES_PER_BITMAP_ROW)
#define FRBITS(bits) bits, STANDARD_BITMAP_HEIGHT (bits)
struct fringe_bitmap standard_bitmaps[] =
{
{ NULL, 0, 0, 0, 0, 0 },
{ FRBITS (question_mark_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (left_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (right_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (up_arrow_bits), 8, 0, ALIGN_BITMAP_TOP, 0 },
{ FRBITS (down_arrow_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 },
{ FRBITS (left_curly_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (right_curly_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (left_triangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (right_triangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (top_left_angle_bits), 8, 0, ALIGN_BITMAP_TOP, 0 },
{ FRBITS (top_right_angle_bits), 8, 0, ALIGN_BITMAP_TOP, 0 },
{ FRBITS (bottom_left_angle_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 },
{ FRBITS (bottom_right_angle_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 },
{ FRBITS (left_bracket_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (right_bracket_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (filled_rectangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (hollow_rectangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (filled_square_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (hollow_square_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (vertical_bar_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (horizontal_bar_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 },
{ FRBITS (empty_line_bits), 8, 3, ALIGN_BITMAP_TOP, 0 },
};
#define NO_FRINGE_BITMAP 0
#define UNDEF_FRINGE_BITMAP 1
#define MAX_STANDARD_FRINGE_BITMAPS (sizeof(standard_bitmaps)/sizeof(standard_bitmaps[0]))
static struct fringe_bitmap **fringe_bitmaps;
static Lisp_Object *fringe_faces;
static int max_fringe_bitmaps;
static int max_used_fringe_bitmap = MAX_STANDARD_FRINGE_BITMAPS;
int
lookup_fringe_bitmap (bitmap)
Lisp_Object bitmap;
{
int bn;
bitmap = Fget (bitmap, Qfringe);
if (!INTEGERP (bitmap))
return 0;
bn = XINT (bitmap);
if (bn > NO_FRINGE_BITMAP
&& bn < max_used_fringe_bitmap
&& (bn < MAX_STANDARD_FRINGE_BITMAPS
|| fringe_bitmaps[bn] != NULL))
return bn;
return 0;
}
static Lisp_Object
get_fringe_bitmap_name (bn)
int bn;
{
Lisp_Object bitmaps;
Lisp_Object num;
if (bn <= 0)
return Qnil;
bitmaps = Vfringe_bitmaps;
num = make_number (bn);
while (CONSP (bitmaps))
{
Lisp_Object bitmap = XCAR (bitmaps);
if (EQ (num, Fget (bitmap, Qfringe)))
return bitmap;
bitmaps = XCDR (bitmaps);
}
return num;
}
static void
draw_fringe_bitmap_1 (w, row, left_p, overlay, which)
struct window *w;
struct glyph_row *row;
int left_p, overlay;
int which;
{
struct frame *f = XFRAME (WINDOW_FRAME (w));
struct draw_fringe_bitmap_params p;
struct fringe_bitmap *fb;
int period;
int face_id = DEFAULT_FACE_ID;
p.cursor_p = 0;
p.overlay_p = (overlay & 1) == 1;
p.cursor_p = (overlay & 2) == 2;
if (which != NO_FRINGE_BITMAP)
{
}
else if (left_p)
{
which = row->left_fringe_bitmap;
face_id = row->left_fringe_face_id;
}
else
{
which = row->right_fringe_bitmap;
face_id = row->right_fringe_face_id;
}
if (face_id == DEFAULT_FACE_ID)
{
Lisp_Object face;
if ((face = fringe_faces[which], NILP (face))
|| (face_id = lookup_derived_face (f, face, 'A', FRINGE_FACE_ID, 0),
face_id < 0))
face_id = FRINGE_FACE_ID;
}
fb = fringe_bitmaps[which];
if (fb == NULL)
fb = &standard_bitmaps[which < MAX_STANDARD_FRINGE_BITMAPS
? which : UNDEF_FRINGE_BITMAP];
period = fb->period;
p.y = WINDOW_TO_FRAME_PIXEL_Y (w, row->y);
p.which = which;
p.bits = fb->bits;
p.wd = fb->width;
p.h = fb->height;
p.dh = (period > 0 ? (p.y % period) : 0);
p.h -= p.dh;
if (p.h > row->height)
p.h = row->height;
p.face = FACE_FROM_ID (f, face_id);
if (p.face == NULL)
{
return;
}
PREPARE_FACE_FOR_DISPLAY (f, p.face);
p.bx = -1;
if (left_p)
{
int wd = WINDOW_LEFT_FRINGE_WIDTH (w);
int x = window_box_left (w, (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)
? LEFT_MARGIN_AREA
: TEXT_AREA));
if (p.wd > wd)
p.wd = wd;
p.x = x - p.wd - (wd - p.wd) / 2;
if (p.wd < wd || row->height > p.h)
{
wd -= ((!WINDOW_LEFTMOST_P (w)
&& !WINDOW_HAS_VERTICAL_SCROLL_BAR (w))
? 1 : 0);
p.bx = x - wd;
p.nx = wd;
}
}
else
{
int x = window_box_right (w,
(WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)
? RIGHT_MARGIN_AREA
: TEXT_AREA));
int wd = WINDOW_RIGHT_FRINGE_WIDTH (w);
if (p.wd > wd)
p.wd = wd;
p.x = x + (wd - p.wd) / 2;
if (p.wd < wd || row->height > p.h)
{
p.bx = x;
p.nx = wd;
}
}
if (p.bx >= 0)
{
int header_line_height = WINDOW_HEADER_LINE_HEIGHT (w);
p.by = WINDOW_TO_FRAME_PIXEL_Y (w, max (header_line_height, row->y));
p.ny = row->visible_height;
}
switch (fb->align)
{
case ALIGN_BITMAP_CENTER:
p.y += (row->height - p.h) / 2;
break;
case ALIGN_BITMAP_BOTTOM:
p.h = fb->height;
p.y += (row->visible_height - p.h);
break;
case ALIGN_BITMAP_TOP:
break;
}
rif->draw_fringe_bitmap (w, row, &p);
}
static int
get_logical_cursor_bitmap (w, cursor)
struct window *w;
Lisp_Object cursor;
{
Lisp_Object cmap, bm = Qnil;
if ((cmap = XBUFFER (w->buffer)->fringe_cursor_alist), !NILP (cmap))
{
bm = Fassq (cursor, cmap);
if (CONSP (bm))
{
if ((bm = XCDR (bm)), NILP (bm))
return NO_FRINGE_BITMAP;
return lookup_fringe_bitmap (bm);
}
}
if (EQ (cmap, buffer_defaults.fringe_cursor_alist))
return NO_FRINGE_BITMAP;
bm = Fassq (cursor, buffer_defaults.fringe_cursor_alist);
if (!CONSP (bm) || ((bm = XCDR (bm)), NILP (bm)))
return NO_FRINGE_BITMAP;
return lookup_fringe_bitmap (bm);
}
static int
get_logical_fringe_bitmap (w, bitmap, right_p, partial_p)
struct window *w;
Lisp_Object bitmap;
int right_p, partial_p;
{
Lisp_Object cmap, bm1 = Qnil, bm2 = Qnil, bm;
int ln1 = 0, ln2 = 0;
int ix1 = right_p;
int ix2 = ix1 + (partial_p ? 2 : 0);
if ((cmap = XBUFFER (w->buffer)->fringe_indicator_alist), !NILP (cmap))
{
bm1 = Fassq (bitmap, cmap);
if (CONSP (bm1))
{
if ((bm1 = XCDR (bm1)), NILP (bm1))
return NO_FRINGE_BITMAP;
if (CONSP (bm1))
{
ln1 = XINT (Flength (bm1));
if (partial_p)
{
if (ln1 > ix2)
{
bm = Fnth (make_number (ix2), bm1);
if (!EQ (bm, Qt))
goto found;
}
}
else
{
if (ln1 > ix1)
{
bm = Fnth (make_number (ix1), bm1);
if (!EQ (bm, Qt))
goto found;
}
}
}
else if ((bm = bm1, !EQ (bm, Qt)))
goto found;
}
}
if (!EQ (cmap, buffer_defaults.fringe_indicator_alist)
&& !NILP (buffer_defaults.fringe_indicator_alist))
{
bm2 = Fassq (bitmap, buffer_defaults.fringe_indicator_alist);
if (CONSP (bm2))
{
if ((bm2 = XCDR (bm2)), !NILP (bm2))
{
if (CONSP (bm2))
{
ln2 = XINT (Flength (bm2));
if (partial_p)
{
if (ln2 > ix2)
{
bm = Fnth (make_number (ix2), bm2);
if (!EQ (bm, Qt))
goto found;
}
}
}
}
}
}
if (ln1 > ix1)
{
bm = Fnth (make_number (ix1), bm1);
if (!EQ (bm, Qt))
goto found;
}
if (ln2 > ix1)
{
bm = Fnth (make_number (ix1), bm2);
if (!EQ (bm, Qt))
goto found;
return NO_FRINGE_BITMAP;
}
else if ((bm = bm2, NILP (bm)))
return NO_FRINGE_BITMAP;
found:
return lookup_fringe_bitmap (bm);
}
void
draw_fringe_bitmap (w, row, left_p)
struct window *w;
struct glyph_row *row;
int left_p;
{
int overlay = 0;
if (!left_p && row->cursor_in_fringe_p)
{
Lisp_Object cursor = Qnil;
switch (w->phys_cursor_type)
{
case HOLLOW_BOX_CURSOR:
if (row->visible_height >= STANDARD_BITMAP_HEIGHT (hollow_rectangle_bits))
cursor = Qhollow;
else
cursor = Qhollow_small;
break;
case FILLED_BOX_CURSOR:
cursor = Qbox;
break;
case BAR_CURSOR:
cursor = Qbar;
break;
case HBAR_CURSOR:
cursor = Qhbar;
break;
case NO_CURSOR:
default:
w->phys_cursor_on_p = 0;
row->cursor_in_fringe_p = 0;
break;
}
if (!NILP (cursor))
{
int bm = get_logical_cursor_bitmap (w, cursor);
if (bm != NO_FRINGE_BITMAP)
{
draw_fringe_bitmap_1 (w, row, 0, 2, bm);
overlay = EQ (cursor, Qbox) ? 3 : 1;
}
}
}
draw_fringe_bitmap_1 (w, row, left_p, overlay, NO_FRINGE_BITMAP);
if (left_p && row->overlay_arrow_bitmap != NO_FRINGE_BITMAP)
draw_fringe_bitmap_1 (w, row, 1, 1, row->overlay_arrow_bitmap);
}
void
draw_row_fringe_bitmaps (w, row)
struct window *w;
struct glyph_row *row;
{
xassert (interrupt_input_blocked);
if (row->visible_height <= 0)
return;
if (WINDOW_LEFT_FRINGE_WIDTH (w) != 0)
draw_fringe_bitmap (w, row, 1);
if (WINDOW_RIGHT_FRINGE_WIDTH (w) != 0)
draw_fringe_bitmap (w, row, 0);
}
int
draw_window_fringes (w, no_fringe)
struct window *w;
int no_fringe;
{
struct glyph_row *row;
int yb = window_text_bottom_y (w);
int nrows = w->current_matrix->nrows;
int y = 0, rn;
int updated = 0;
if (w->pseudo_window_p)
return 0;
if (no_fringe
&& (WINDOW_LEFT_FRINGE_WIDTH (w) == 0
|| WINDOW_RIGHT_FRINGE_WIDTH (w) == 0))
updated++;
for (y = 0, rn = 0, row = w->current_matrix->rows;
y < yb && rn < nrows;
y += row->height, ++row, ++rn)
{
if (!row->redraw_fringe_bitmaps_p)
continue;
draw_row_fringe_bitmaps (w, row);
row->redraw_fringe_bitmaps_p = 0;
updated++;
}
return updated;
}
int
update_window_fringes (w, keep_current_p)
struct window *w;
int keep_current_p;
{
struct glyph_row *row, *cur = 0;
int yb = window_text_bottom_y (w);
int rn, nrows = w->current_matrix->nrows;
int y;
int redraw_p = 0;
Lisp_Object boundary_top = Qnil, boundary_bot = Qnil;
Lisp_Object arrow_top = Qnil, arrow_bot = Qnil;
Lisp_Object empty_pos;
Lisp_Object ind = Qnil;
#define MAX_BITMAP_CACHE (8*4)
int bitmap_cache[MAX_BITMAP_CACHE];
if (w->pseudo_window_p)
return 0;
if (!MINI_WINDOW_P (w)
&& (ind = XBUFFER (w->buffer)->indicate_buffer_boundaries, !NILP (ind)))
{
if (EQ (ind, Qleft) || EQ (ind, Qright))
boundary_top = boundary_bot = arrow_top = arrow_bot = ind;
else if (CONSP (ind) && CONSP (XCAR (ind)))
{
Lisp_Object pos;
if (pos = Fassq (Qt, ind), !NILP (pos))
boundary_top = boundary_bot = arrow_top = arrow_bot = XCDR (pos);
if (pos = Fassq (Qtop, ind), !NILP (pos))
boundary_top = XCDR (pos);
if (pos = Fassq (Qbottom, ind), !NILP (pos))
boundary_bot = XCDR (pos);
if (pos = Fassq (Qup, ind), !NILP (pos))
arrow_top = XCDR (pos);
if (pos = Fassq (Qdown, ind), !NILP (pos))
arrow_bot = XCDR (pos);
}
else
boundary_top = boundary_bot = Qleft;
}
if (!NILP (ind))
{
int done_top = 0, done_bot = 0;
for (y = 0, rn = 0;
y < yb && rn < nrows;
y += row->height, ++rn)
{
unsigned indicate_bob_p, indicate_top_line_p;
unsigned indicate_eob_p, indicate_bottom_line_p;
row = w->desired_matrix->rows + rn;
if (!row->enabled_p)
row = w->current_matrix->rows + rn;
indicate_bob_p = row->indicate_bob_p;
indicate_top_line_p = row->indicate_top_line_p;
indicate_eob_p = row->indicate_eob_p;
indicate_bottom_line_p = row->indicate_bottom_line_p;
row->indicate_bob_p = row->indicate_top_line_p = 0;
row->indicate_eob_p = row->indicate_bottom_line_p = 0;
if (!row->mode_line_p)
{
if (!done_top)
{
if (MATRIX_ROW_START_CHARPOS (row) <= BUF_BEGV (XBUFFER (w->buffer))
&& !MATRIX_ROW_PARTIALLY_VISIBLE_AT_TOP_P (w, row))
row->indicate_bob_p = !NILP (boundary_top);
else
row->indicate_top_line_p = !NILP (arrow_top);
done_top = 1;
}
if (!done_bot)
{
if (MATRIX_ROW_END_CHARPOS (row) >= BUF_ZV (XBUFFER (w->buffer))
&& !MATRIX_ROW_PARTIALLY_VISIBLE_AT_BOTTOM_P (w, row))
row->indicate_eob_p = !NILP (boundary_bot), done_bot = 1;
else if (y + row->height >= yb)
row->indicate_bottom_line_p = !NILP (arrow_bot), done_bot = 1;
}
}
if (indicate_bob_p != row->indicate_bob_p
|| indicate_top_line_p != row->indicate_top_line_p
|| indicate_eob_p != row->indicate_eob_p
|| indicate_bottom_line_p != row->indicate_bottom_line_p)
row->redraw_fringe_bitmaps_p = 1;
}
}
empty_pos = XBUFFER (w->buffer)->indicate_empty_lines;
if (!NILP (empty_pos) && !EQ (empty_pos, Qright))
empty_pos = WINDOW_LEFT_FRINGE_WIDTH (w) == 0 ? Qright : Qleft;
for (y = 0; y < MAX_BITMAP_CACHE; y++)
bitmap_cache[y] = -1;
#define LEFT_FRINGE(cache, which, partial_p) \
(bitmap_cache[cache*4+partial_p] >= 0 \
? bitmap_cache[cache*4+partial_p] \
: (bitmap_cache[cache*4+partial_p] = \
get_logical_fringe_bitmap (w, which, 0, partial_p)))
#define RIGHT_FRINGE(cache, which, partial_p) \
(bitmap_cache[cache*4+2+partial_p] >= 0 \
? bitmap_cache[cache*4+2+partial_p] \
: (bitmap_cache[cache*4+2+partial_p] = \
get_logical_fringe_bitmap (w, which, 1, partial_p)))
for (y = 0, rn = 0;
y < yb && rn < nrows;
y += row->height, rn++)
{
int left, right;
unsigned left_face_id, right_face_id;
row = w->desired_matrix->rows + rn;
cur = w->current_matrix->rows + rn;
if (!row->enabled_p)
row = cur;
left_face_id = right_face_id = DEFAULT_FACE_ID;
if (WINDOW_LEFT_FRINGE_WIDTH (w) == 0)
left = NO_FRINGE_BITMAP;
else if (row->left_user_fringe_bitmap != NO_FRINGE_BITMAP)
{
left = row->left_user_fringe_bitmap;
left_face_id = row->left_user_fringe_face_id;
}
else if (row->truncated_on_left_p)
left = LEFT_FRINGE(0, Qtruncation, 0);
else if (row->indicate_bob_p && EQ (boundary_top, Qleft))
left = ((row->indicate_eob_p && EQ (boundary_bot, Qleft))
? LEFT_FRINGE (1, Qtop_bottom, row->ends_at_zv_p)
: LEFT_FRINGE (2, Qtop, 0));
else if (row->indicate_eob_p && EQ (boundary_bot, Qleft))
left = LEFT_FRINGE (3, Qbottom, row->ends_at_zv_p);
else if (MATRIX_ROW_CONTINUATION_LINE_P (row))
left = LEFT_FRINGE (4, Qcontinuation, 0);
else if (row->indicate_empty_line_p && EQ (empty_pos, Qleft))
left = LEFT_FRINGE (5, Qempty_line, 0);
else if (row->indicate_top_line_p && EQ (arrow_top, Qleft))
left = LEFT_FRINGE (6, Qup, 0);
else if (row->indicate_bottom_line_p && EQ (arrow_bot, Qleft))
left = LEFT_FRINGE (7, Qdown, 0);
else
left = NO_FRINGE_BITMAP;
if (WINDOW_RIGHT_FRINGE_WIDTH (w) == 0)
right = NO_FRINGE_BITMAP;
else if (row->right_user_fringe_bitmap != NO_FRINGE_BITMAP)
{
right = row->right_user_fringe_bitmap;
right_face_id = row->right_user_fringe_face_id;
}
else if (row->truncated_on_right_p)
right = RIGHT_FRINGE (0, Qtruncation, 0);
else if (row->indicate_bob_p && EQ (boundary_top, Qright))
right = ((row->indicate_eob_p && EQ (boundary_bot, Qright))
? RIGHT_FRINGE (1, Qtop_bottom, row->ends_at_zv_p)
: RIGHT_FRINGE (2, Qtop, 0));
else if (row->indicate_eob_p && EQ (boundary_bot, Qright))
right = RIGHT_FRINGE (3, Qbottom, row->ends_at_zv_p);
else if (row->continued_p)
right = RIGHT_FRINGE (4, Qcontinuation, 0);
else if (row->indicate_top_line_p && EQ (arrow_top, Qright))
right = RIGHT_FRINGE (6, Qup, 0);
else if (row->indicate_bottom_line_p && EQ (arrow_bot, Qright))
right = RIGHT_FRINGE (7, Qdown, 0);
else if (row->indicate_empty_line_p && EQ (empty_pos, Qright))
right = RIGHT_FRINGE (5, Qempty_line, 0);
else
right = NO_FRINGE_BITMAP;
if (row->y != cur->y
|| row->visible_height != cur->visible_height
|| row->ends_at_zv_p != cur->ends_at_zv_p
|| left != cur->left_fringe_bitmap
|| right != cur->right_fringe_bitmap
|| left_face_id != cur->left_fringe_face_id
|| right_face_id != cur->right_fringe_face_id
|| cur->redraw_fringe_bitmaps_p)
{
redraw_p = row->redraw_fringe_bitmaps_p = 1;
if (!keep_current_p)
{
cur->redraw_fringe_bitmaps_p = 1;
cur->left_fringe_bitmap = left;
cur->right_fringe_bitmap = right;
cur->left_fringe_face_id = left_face_id;
cur->right_fringe_face_id = right_face_id;
}
}
if (row->overlay_arrow_bitmap < 0)
row->overlay_arrow_bitmap = get_logical_fringe_bitmap (w, Qoverlay_arrow, 0, 0);
if (row->overlay_arrow_bitmap != cur->overlay_arrow_bitmap)
{
redraw_p = row->redraw_fringe_bitmaps_p = cur->redraw_fringe_bitmaps_p = 1;
cur->overlay_arrow_bitmap = row->overlay_arrow_bitmap;
}
row->left_fringe_bitmap = left;
row->right_fringe_bitmap = right;
row->left_fringe_face_id = left_face_id;
row->right_fringe_face_id = right_face_id;
if (rn > 0 && row->redraw_fringe_bitmaps_p)
row[-1].redraw_fringe_bitmaps_p = cur[-1].redraw_fringe_bitmaps_p = 1;
}
return redraw_p && !keep_current_p;
}
void
compute_fringe_widths (f, redraw)
struct frame *f;
int redraw;
{
int o_left = FRAME_LEFT_FRINGE_WIDTH (f);
int o_right = FRAME_RIGHT_FRINGE_WIDTH (f);
int o_cols = FRAME_FRINGE_COLS (f);
Lisp_Object left_fringe = Fassq (Qleft_fringe, f->param_alist);
Lisp_Object right_fringe = Fassq (Qright_fringe, f->param_alist);
int left_fringe_width, right_fringe_width;
if (!NILP (left_fringe))
left_fringe = Fcdr (left_fringe);
if (!NILP (right_fringe))
right_fringe = Fcdr (right_fringe);
left_fringe_width = ((NILP (left_fringe) || !INTEGERP (left_fringe)) ? 8 :
XINT (left_fringe));
right_fringe_width = ((NILP (right_fringe) || !INTEGERP (right_fringe)) ? 8 :
XINT (right_fringe));
if (left_fringe_width || right_fringe_width)
{
int left_wid = left_fringe_width >= 0 ? left_fringe_width : -left_fringe_width;
int right_wid = right_fringe_width >= 0 ? right_fringe_width : -right_fringe_width;
int conf_wid = left_wid + right_wid;
int font_wid = FRAME_COLUMN_WIDTH (f);
int cols = (left_wid + right_wid + font_wid-1) / font_wid;
int real_wid = cols * font_wid;
if (left_wid && right_wid)
{
if (left_fringe_width < 0)
{
FRAME_LEFT_FRINGE_WIDTH (f) = left_wid;
FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid - left_wid;
}
else if (right_fringe_width < 0)
{
FRAME_LEFT_FRINGE_WIDTH (f) = real_wid - right_wid;
FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid;
}
else
{
int fill = real_wid - conf_wid;
FRAME_LEFT_FRINGE_WIDTH (f) = left_wid + fill/2;
FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid + fill - fill/2;
}
}
else if (left_fringe_width)
{
FRAME_LEFT_FRINGE_WIDTH (f) = real_wid;
FRAME_RIGHT_FRINGE_WIDTH (f) = 0;
}
else
{
FRAME_LEFT_FRINGE_WIDTH (f) = 0;
FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid;
}
FRAME_FRINGE_COLS (f) = cols;
}
else
{
FRAME_LEFT_FRINGE_WIDTH (f) = 0;
FRAME_RIGHT_FRINGE_WIDTH (f) = 0;
FRAME_FRINGE_COLS (f) = 0;
}
if (redraw && FRAME_VISIBLE_P (f))
if (o_left != FRAME_LEFT_FRINGE_WIDTH (f) ||
o_right != FRAME_RIGHT_FRINGE_WIDTH (f) ||
o_cols != FRAME_FRINGE_COLS (f))
redraw_frame (f);
}
void
destroy_fringe_bitmap (n)
int n;
{
struct fringe_bitmap **fbp;
fringe_faces[n] = Qnil;
fbp = &fringe_bitmaps[n];
if (*fbp && (*fbp)->dynamic)
{
if (rif && rif->destroy_fringe_bitmap)
rif->destroy_fringe_bitmap (n);
xfree (*fbp);
*fbp = NULL;
}
while (max_used_fringe_bitmap > MAX_STANDARD_FRINGE_BITMAPS
&& fringe_bitmaps[max_used_fringe_bitmap - 1] == NULL)
max_used_fringe_bitmap--;
}
DEFUN ("destroy-fringe-bitmap", Fdestroy_fringe_bitmap, Sdestroy_fringe_bitmap,
1, 1, 0,
doc: )
(bitmap)
Lisp_Object bitmap;
{
int n;
CHECK_SYMBOL (bitmap);
n = lookup_fringe_bitmap (bitmap);
if (!n)
return Qnil;
destroy_fringe_bitmap (n);
if (n >= MAX_STANDARD_FRINGE_BITMAPS)
{
Vfringe_bitmaps = Fdelq (bitmap, Vfringe_bitmaps);
Fput (bitmap, Qfringe, Qnil);
}
return Qnil;
}
void
init_fringe_bitmap (which, fb, once_p)
int which;
struct fringe_bitmap *fb;
int once_p;
{
if (once_p || fb->dynamic)
{
#if defined (HAVE_X_WINDOWS)
static unsigned char swap_nibble[16]
= { 0x0, 0x8, 0x4, 0xc,
0x2, 0xa, 0x6, 0xe,
0x1, 0x9, 0x5, 0xd,
0x3, 0xb, 0x7, 0xf };
unsigned short *bits = fb->bits;
int j;
if (fb->width <= 8)
{
unsigned char *cbits = (unsigned char *)fb->bits;
for (j = 0; j < fb->height; j++)
{
unsigned short b = *bits++;
unsigned char c;
c = (unsigned char)((swap_nibble[b & 0xf] << 4)
| (swap_nibble[(b>>4) & 0xf]));
*cbits++ = (c >> (8 - fb->width));
}
}
else
{
for (j = 0; j < fb->height; j++)
{
unsigned short b = *bits;
b = (unsigned short)((swap_nibble[b & 0xf] << 12)
| (swap_nibble[(b>>4) & 0xf] << 8)
| (swap_nibble[(b>>8) & 0xf] << 4)
| (swap_nibble[(b>>12) & 0xf]));
*bits++ = (b >> (16 - fb->width));
}
}
#endif
#if defined (MAC_OS) && defined (WORDS_BIG_ENDIAN)
unsigned short *bits = fb->bits;
int j;
for (j = 0; j < fb->height; j++)
{
unsigned short b = *bits;
*bits++ = ((b >> 8) & 0xff) | ((b & 0xff) << 8);
}
#endif
}
if (!once_p)
{
destroy_fringe_bitmap (which);
if (rif && rif->define_fringe_bitmap)
rif->define_fringe_bitmap (which, fb->bits, fb->height, fb->width);
fringe_bitmaps[which] = fb;
if (which >= max_used_fringe_bitmap)
max_used_fringe_bitmap = which + 1;
}
}
DEFUN ("define-fringe-bitmap", Fdefine_fringe_bitmap, Sdefine_fringe_bitmap,
2, 5, 0,
doc: )
(bitmap, bits, height, width, align)
Lisp_Object bitmap, bits, height, width, align;
{
int n, h, i, j;
unsigned short *b;
struct fringe_bitmap fb, *xfb;
int fill1 = 0, fill2 = 0;
CHECK_SYMBOL (bitmap);
if (STRINGP (bits))
h = SCHARS (bits);
else if (VECTORP (bits))
h = XVECTOR (bits)->size;
else
wrong_type_argument (Qsequencep, bits);
if (NILP (height))
fb.height = h;
else
{
CHECK_NUMBER (height);
fb.height = min (XINT (height), 255);
if (fb.height > h)
{
fill1 = (fb.height - h) / 2;
fill2 = fb.height - h - fill1;
}
}
if (NILP (width))
fb.width = 8;
else
{
CHECK_NUMBER (width);
fb.width = min (XINT (width), 255);
}
fb.period = 0;
fb.align = ALIGN_BITMAP_CENTER;
if (CONSP (align))
{
Lisp_Object period = XCDR (align);
if (CONSP (period))
{
period = XCAR (period);
if (!NILP (period))
{
fb.period = fb.height;
fb.height = 255;
}
}
align = XCAR (align);
}
if (EQ (align, Qtop))
fb.align = ALIGN_BITMAP_TOP;
else if (EQ (align, Qbottom))
fb.align = ALIGN_BITMAP_BOTTOM;
else if (!NILP (align) && !EQ (align, Qcenter))
error ("Bad align argument");
n = lookup_fringe_bitmap (bitmap);
if (!n)
{
if (max_used_fringe_bitmap < max_fringe_bitmaps)
n = max_used_fringe_bitmap++;
else
{
for (n = MAX_STANDARD_FRINGE_BITMAPS;
n < max_fringe_bitmaps;
n++)
if (fringe_bitmaps[n] == NULL)
break;
if (n == max_fringe_bitmaps)
{
if ((max_fringe_bitmaps + 20) > MAX_FRINGE_BITMAPS)
error ("No free fringe bitmap slots");
i = max_fringe_bitmaps;
max_fringe_bitmaps += 20;
fringe_bitmaps
= ((struct fringe_bitmap **)
xrealloc (fringe_bitmaps, max_fringe_bitmaps * sizeof (struct fringe_bitmap *)));
fringe_faces
= (Lisp_Object *) xrealloc (fringe_faces, max_fringe_bitmaps * sizeof (Lisp_Object));
for (; i < max_fringe_bitmaps; i++)
{
fringe_bitmaps[i] = NULL;
fringe_faces[i] = Qnil;
}
}
}
Vfringe_bitmaps = Fcons (bitmap, Vfringe_bitmaps);
Fput (bitmap, Qfringe, make_number (n));
}
fb.dynamic = 1;
xfb = (struct fringe_bitmap *) xmalloc (sizeof fb
+ fb.height * BYTES_PER_BITMAP_ROW);
fb.bits = b = (unsigned short *) (xfb + 1);
bzero (b, fb.height);
j = 0;
while (j < fb.height)
{
for (i = 0; i < fill1 && j < fb.height; i++)
b[j++] = 0;
for (i = 0; i < h && j < fb.height; i++)
{
Lisp_Object elt = Faref (bits, make_number (i));
b[j++] = NUMBERP (elt) ? XINT (elt) : 0;
}
for (i = 0; i < fill2 && j < fb.height; i++)
b[j++] = 0;
}
*xfb = fb;
init_fringe_bitmap (n, xfb, 0);
return bitmap;
}
DEFUN ("set-fringe-bitmap-face", Fset_fringe_bitmap_face, Sset_fringe_bitmap_face,
1, 2, 0,
doc: )
(bitmap, face)
Lisp_Object bitmap, face;
{
int n;
int face_id;
CHECK_SYMBOL (bitmap);
n = lookup_fringe_bitmap (bitmap);
if (!n)
error ("Undefined fringe bitmap");
if (!NILP (face))
{
face_id = lookup_derived_face (SELECTED_FRAME (), face,
'A', FRINGE_FACE_ID, 1);
if (face_id < 0)
error ("No such face");
}
fringe_faces[n] = face;
return Qnil;
}
DEFUN ("fringe-bitmaps-at-pos", Ffringe_bitmaps_at_pos, Sfringe_bitmaps_at_pos,
0, 2, 0,
doc: )
(pos, window)
Lisp_Object pos, window;
{
struct window *w;
struct glyph_row *row;
int textpos;
if (NILP (window))
window = selected_window;
CHECK_WINDOW (window);
w = XWINDOW (window);
if (!NILP (pos))
{
CHECK_NUMBER_COERCE_MARKER (pos);
textpos = XINT (pos);
}
else if (w == XWINDOW (selected_window))
textpos = PT;
else
textpos = XMARKER (w->pointm)->charpos;
row = MATRIX_FIRST_TEXT_ROW (w->current_matrix);
row = row_containing_pos (w, textpos, row, NULL, 0);
if (row)
return list3 (get_fringe_bitmap_name (row->left_fringe_bitmap),
get_fringe_bitmap_name (row->right_fringe_bitmap),
(row->overlay_arrow_bitmap == 0 ? Qnil
: row->overlay_arrow_bitmap < 0 ? Qt
: get_fringe_bitmap_name (row->overlay_arrow_bitmap)));
else
return Qnil;
}
void
syms_of_fringe ()
{
Qtruncation = intern ("truncation");
staticpro (&Qtruncation);
Qcontinuation = intern ("continuation");
staticpro (&Qcontinuation);
Qoverlay_arrow = intern ("overlay-arrow");
staticpro (&Qoverlay_arrow);
Qempty_line = intern ("empty-line");
staticpro (&Qempty_line);
Qtop_bottom = intern ("top-bottom");
staticpro (&Qtop_bottom);
Qhollow_small = intern ("hollow-small");
staticpro (&Qhollow_small);
defsubr (&Sdestroy_fringe_bitmap);
defsubr (&Sdefine_fringe_bitmap);
defsubr (&Sfringe_bitmaps_at_pos);
defsubr (&Sset_fringe_bitmap_face);
DEFVAR_LISP ("overflow-newline-into-fringe", &Voverflow_newline_into_fringe,
doc: );
Voverflow_newline_into_fringe = Qt;
DEFVAR_LISP ("fringe-bitmaps", &Vfringe_bitmaps,
doc: );
Vfringe_bitmaps = Qnil;
}
void
mark_fringe_data ()
{
int i;
for (i = 0; i < max_fringe_bitmaps; i++)
if (!NILP (fringe_faces[i]))
mark_object (fringe_faces[i]);
}
void
init_fringe_once ()
{
int bt;
for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++)
init_fringe_bitmap(bt, &standard_bitmaps[bt], 1);
}
void
init_fringe ()
{
int i;
max_fringe_bitmaps = MAX_STANDARD_FRINGE_BITMAPS + 20;
fringe_bitmaps
= (struct fringe_bitmap **) xmalloc (max_fringe_bitmaps * sizeof (struct fringe_bitmap *));
fringe_faces
= (Lisp_Object *) xmalloc (max_fringe_bitmaps * sizeof (Lisp_Object));
for (i = 0; i < max_fringe_bitmaps; i++)
{
fringe_bitmaps[i] = NULL;
fringe_faces[i] = Qnil;
}
}
#if defined (HAVE_NTGUI) || defined (MAC_OS)
void
#ifdef HAVE_NTGUI
w32_init_fringe ()
#else
mac_init_fringe ()
#endif
{
int bt;
if (!rif)
return;
for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++)
{
struct fringe_bitmap *fb = &standard_bitmaps[bt];
rif->define_fringe_bitmap (bt, fb->bits, fb->height, fb->width);
}
}
#endif
#ifdef HAVE_NTGUI
void
w32_reset_fringes ()
{
int bt;
if (!rif)
return;
for (bt = NO_FRINGE_BITMAP + 1; bt < max_used_fringe_bitmap; bt++)
rif->destroy_fringe_bitmap (bt);
}
#endif
#endif