\f
/* Function prototypes. */
+static void redraw_overlapping_rows P_ ((struct window *, int));
+static void redraw_overlapped_rows P_ ((struct window *, int));
static int count_blanks P_ ((struct glyph *, int));
static int count_match P_ ((struct glyph *, struct glyph *,
struct glyph *, struct glyph *));
static void clear_window_matrices P_ ((struct window *, int));
static void fill_up_glyph_row_area_with_spaces P_ ((struct glyph_row *, int));
static int scrolling_window P_ ((struct window *, int));
-static void update_window_line P_ ((struct window *, int));
+static int update_window_line P_ ((struct window *, int));
static void update_marginal_area P_ ((struct window *, int, int));
-static void update_text_area P_ ((struct window *, int));
+static int update_text_area P_ ((struct window *, int));
static void make_current P_ ((struct glyph_matrix *, struct glyph_matrix *,
int));
static void mirror_make_current P_ ((struct window *, int));
clear_glyph_row (row);
row->y = y;
- row->ascent = 0;
- row->height = CANON_Y_UNIT (XFRAME (WINDOW_FRAME (w)));
+ row->ascent = row->phys_ascent = 0;
+ row->height = row->phys_height = CANON_Y_UNIT (XFRAME (w->frame));
if (row->y < min_y)
row->visible_height = row->height - (min_y - row->y);
|| a->overlay_arrow_p != b->overlay_arrow_p
|| a->continued_p != b->continued_p
|| a->indicate_empty_line_p != b->indicate_empty_line_p
+ || a->overlapped_p != b->overlapped_p
|| (MATRIX_ROW_CONTINUATION_LINE_P (a)
!= MATRIX_ROW_CONTINUATION_LINE_P (b))
/* Different partially visible characters on left margin. */
|| a->x != b->x
/* Different height. */
|| a->ascent != b->ascent
+ || a->phys_ascent != b->phys_ascent
+ || a->phys_height != b->phys_height
|| a->visible_height != b->visible_height)
return 0;
}
adjust_glyphs (f)
struct frame *f;
{
+ /* Block input so that expose events and other events that access
+ glyph matrices are not processed while we are changing them. */
+ BLOCK_INPUT;
+
if (f)
adjust_frame_glyphs (f);
else
FOR_EACH_FRAME (tail, lisp_frame)
adjust_frame_glyphs (XFRAME (lisp_frame));
}
+
+ UNBLOCK_INPUT;
}
|| g == '\r'
/* Give up if unable to display the cursor in the window. */
|| w->cursor.vpos < 0
- /* Can't do it in a continued line because continuation lines
- will change. */
- || MATRIX_ROW (w->current_matrix, w->cursor.vpos)->continued_p
+ || (glyph_row = MATRIX_ROW (w->current_matrix, w->cursor.vpos),
+ /* Can't do it in a continued line because continuation
+ lines would change. */
+ (glyph_row->continued_p
+ /* Can't use this method if the line overlaps others or is
+ overlapped by others because these other lines would
+ have to be redisplayed. */
+ || glyph_row->overlapping_p
+ || glyph_row->overlapped_p))
/* Can't do it for partial width windows on terminal frames
because we can't clear to eol in such a window. */
|| (!window_redisplay_p && !WINDOW_FULL_WIDTH_P (w)))
the original row, or if it is not a character glyph. */
if (glyph_row->ascent != it.ascent
|| glyph_row->height != it.ascent + it.descent
+ || glyph_row->phys_ascent != it.phys_ascent
+ || glyph_row->phys_height != it.phys_ascent + it.phys_descent
|| it.what != IT_CHARACTER)
return 0;
}
+/* Redraw lines from the current matrix of window W that are
+ overlapped by other rows. YB is bottom-most y-position in W. */
+
+static void
+redraw_overlapped_rows (w, yb)
+ struct window *w;
+ int yb;
+{
+ int i, bottom_y;
+ struct glyph_row *row;
+
+ /* If rows overlapping others have been changed, the rows being
+ overlapped have to be redrawn. This won't draw lines that have
+ already been drawn in update_window_line because overlapped_p in
+ desired rows is 0, so after row assignment overlapped_p in
+ current rows is 0. */
+ for (i = 0; i < w->current_matrix->nrows; ++i)
+ {
+ row = w->current_matrix->rows + i;
+
+ if (!row->enabled_p)
+ break;
+ else if (row->mode_line_p)
+ continue;
+
+ if (row->overlapped_p)
+ {
+ enum glyph_row_area area;
+
+ for (area = LEFT_MARGIN_AREA; area < LAST_AREA; ++area)
+ {
+ updated_row = row;
+ updated_area = area;
+ rif->cursor_to (i, 0, row->y, area == TEXT_AREA ? row->x : 0);
+ if (row->used[area])
+ rif->write_glyphs (row->glyphs[area], row->used[area]);
+ rif->clear_end_of_line (-1);
+ }
+
+ row->overlapped_p = 0;
+ }
+
+ bottom_y = MATRIX_ROW_BOTTOM_Y (row);
+ if (bottom_y >= yb)
+ break;
+ }
+}
+
+
+/* Redraw lines from the current matrix of window W that overlap
+ others. YB is bottom-most y-position in W. */
+
+static void
+redraw_overlapping_rows (w, yb)
+ struct window *w;
+ int yb;
+{
+ int i, bottom_y;
+ struct glyph_row *row;
+
+ for (i = 0; i < w->current_matrix->nrows; ++i)
+ {
+ row = w->current_matrix->rows + i;
+
+ if (!row->enabled_p)
+ break;
+ else if (row->mode_line_p)
+ continue;
+
+ bottom_y = MATRIX_ROW_BOTTOM_Y (row);
+
+ if (row->overlapping_p && i > 0 && bottom_y < yb)
+ {
+ if (row->used[LEFT_MARGIN_AREA])
+ rif->fix_overlapping_area (w, row, LEFT_MARGIN_AREA);
+
+ if (row->used[TEXT_AREA])
+ rif->fix_overlapping_area (w, row, TEXT_AREA);
+
+ if (row->used[RIGHT_MARGIN_AREA])
+ rif->fix_overlapping_area (w, row, RIGHT_MARGIN_AREA);
+
+ /* Record in neighbor rows that ROW overwrites part of their
+ display. */
+ if (row->phys_ascent > row->ascent && i > 0)
+ MATRIX_ROW (w->current_matrix, i - 1)->overlapped_p = 1;
+ if ((row->phys_height - row->phys_ascent
+ > row->height - row->ascent)
+ && bottom_y < yb)
+ MATRIX_ROW (w->current_matrix, i + 1)->overlapped_p = 1;
+ }
+
+ if (bottom_y >= yb)
+ break;
+ }
+}
+
+
/* Update display of window W. FORCE_P non-zero means that we should
not stop when detecting pending input. */
struct glyph_row *row, *end;
struct glyph_row *mode_line_row;
struct glyph_row *top_line_row = NULL;
- int yb;
+ int yb, changed_p = 0;
rif->update_window_begin_hook (w);
yb = window_text_bottom_y (w);
mode_line_row->y = yb;
update_window_line (w, MATRIX_ROW_VPOS (mode_line_row,
desired_matrix));
+ changed_p = 1;
}
/* Find first enabled row. Optimizations in redisplay_internal
}
else if (rc > 0)
force_p = 1;
+ changed_p = 1;
}
/* Update the top mode line after scrolling because a new top
{
top_line_row->y = 0;
update_window_line (w, 0);
+ changed_p = 1;
}
/* Update the rest of the lines. */
if (!force_p && vpos % preempt_count == 0)
detect_input_pending ();
- update_window_line (w, vpos);
+ changed_p |= update_window_line (w, vpos);
/* Mark all rows below the last visible one in the current
matrix as invalid. This is necessary because of
set_cursor:
+ /* Fix the appearance of overlapping(overlapped rows. */
+ if (rif->fix_overlapping_area
+ && !w->pseudo_window_p
+ && changed_p
+ && !paused_p)
+ {
+ redraw_overlapped_rows (w, yb);
+ redraw_overlapping_rows (w, yb);
+ }
+
if (!paused_p && !w->pseudo_window_p)
{
/* Make cursor visible at cursor position of W. */
/* Remember the redisplay method used to display the matrix. */
strcpy (w->current_matrix->method, w->desired_matrix->method);
#endif
-
+
/* End of update of window W. */
rif->update_window_end_hook (w, 1);
+
}
else
paused_p = 1;
clear_glyph_matrix (desired_matrix);
+
return paused_p;
}
}
-/* Update the display of the text area of row VPOS in window W. */
+/* Update the display of the text area of row VPOS in window W.
+ Value is non-zero if display has changed. */
-static void
+static int
update_text_area (w, vpos)
struct window *w;
int vpos;
{
struct glyph_row *current_row = MATRIX_ROW (w->current_matrix, vpos);
struct glyph_row *desired_row = MATRIX_ROW (w->desired_matrix, vpos);
+ int changed_p = 0;
/* Let functions in xterm.c know what area subsequent X positions
will be relative to. */
if (!current_row->enabled_p
|| desired_row->y != current_row->y
|| desired_row->ascent != current_row->ascent
+ || desired_row->phys_ascent != current_row->phys_ascent
+ || desired_row->phys_height != current_row->phys_height
|| desired_row->visible_height != current_row->visible_height
+ || current_row->overlapped_p
|| current_row->x != desired_row->x)
{
rif->cursor_to (vpos, 0, desired_row->y, desired_row->x);
/* Clear to end of window. */
rif->clear_end_of_line (-1);
+ changed_p = 1;
}
else
{
rif->cursor_to (vpos, start_hpos, desired_row->y, start_x);
rif->write_glyphs (start, i - start_hpos);
+ changed_p = 1;
}
}
{
rif->cursor_to (vpos, i, desired_row->y, x);
rif->write_glyphs (desired_glyph, desired_row->used[TEXT_AREA] - i);
+ changed_p = 1;
}
/* Maybe clear to end of line. */
rif->cursor_to (vpos, i, desired_row->y,
desired_row->x + desired_row->pixel_width);
rif->clear_end_of_line (-1);
+ changed_p = 1;
}
else if (desired_row->pixel_width < current_row->pixel_width)
{
else
x = current_row->x + current_row->pixel_width;
rif->clear_end_of_line (x);
+ changed_p = 1;
}
}
+
+ return changed_p;
}
-/* Update row VPOS in window W. */
+/* Update row VPOS in window W. Value is non-zero if display has been
+ changed. */
-static void
+static int
update_window_line (w, vpos)
struct window *w;
int vpos;
{
struct glyph_row *current_row = MATRIX_ROW (w->current_matrix, vpos);
struct glyph_row *desired_row = MATRIX_ROW (w->desired_matrix, vpos);
+ int changed_p = 0;
xassert (desired_row->enabled_p);
/* Update display of the left margin area, if there is one. */
if (!desired_row->full_width_p
&& !NILP (w->left_margin_width))
- update_marginal_area (w, LEFT_MARGIN_AREA, vpos);
+ {
+ update_marginal_area (w, LEFT_MARGIN_AREA, vpos);
+ changed_p = 1;
+ }
/* Update the display of the text area. */
- update_text_area (w, vpos);
+ changed_p |= update_text_area (w, vpos);
/* Update display of the right margin area, if there is one. */
if (!desired_row->full_width_p
&& !NILP (w->right_margin_width))
- update_marginal_area (w, RIGHT_MARGIN_AREA, vpos);
+ {
+ changed_p = 1;
+ update_marginal_area (w, RIGHT_MARGIN_AREA, vpos);
+ }
/* Draw truncation marks etc. */
if (!current_row->enabled_p
/* Update current_row from desired_row. */
make_current (w->desired_matrix, w->current_matrix, vpos);
updated_row = NULL;
+ return changed_p;
}
for (j = 0; j < r->nrows; ++j)
{
struct glyph_row *from, *to;
+ int to_overlapped_p;
+
to = MATRIX_ROW (current_matrix, r->desired_vpos + j);
+ to_overlapped_p = to->overlapped_p;
from = MATRIX_ROW (desired_matrix, r->desired_vpos + j);
assign_row (to, from);
to->enabled_p = 1, from->enabled_p = 0;
+ to->overlapped_p = to_overlapped_p;
}
}
projects / emacs.git / commitdiff