static void
fix_movedlinepoint(int x, int y)
{
(*canvas_locmove_proc) (x, y);
canvas_ref_proc = canvas_locmove_proc = null_proc;
elastic_linelink();
/* erase last lengths if appres.showlengths is true */
erase_lengths();
if (cur_latexcursor != crosshair_cursor)
set_cursor(crosshair_cursor);
/* make a copy of the original and save as unchanged object */
old_l = copy_line(cur_l);
clean_up();
set_latestline(old_l);
set_action_object(F_EDIT, O_POLYLINE);
old_l->next = cur_l;
/* now change the original to become the new object */
relocate_linepoint(cur_l, cur_x, cur_y, moved_point, left_point);
/* redraw anything under the old line */
redisplay_line(old_l);
/* and the new line */
redisplay_line(cur_l);
/* turn back on all relevant markers */
update_markers(new_objmask);
wrapup_movepoint();
}
void
box_2_box(F_line *old_l)
{
F_line *new_l;
new_l = copy_line(old_l);
switch (old_l->type) {
case T_BOX:
new_l->type = T_ARCBOX;
if (new_l->radius == DEFAULT || new_l->radius == 0)
new_l->radius = cur_boxradius;
break;
case T_ARCBOX:
new_l->type = T_BOX;
break;
}
list_delete_line(&objects.lines, old_l);
list_add_line(&objects.lines, new_l);
clean_up();
old_l->next = new_l;
set_latestline(old_l);
set_action_object(F_CONVERT, O_POLYLINE);
set_modifiedflag();
/* save pointer to this line for undo */
latest_line = new_l;
redisplay_line(new_l);
return;
}
static void
place_line_x(int x, int y)
{
int dx, dy;
canvas_leftbut_proc = null_proc;
canvas_middlebut_proc = null_proc;
canvas_rightbut_proc = null_proc;
canvas_locmove_proc = null_proc;
canvas_ref_proc = null_proc;
adjust_pos(x, y, fix_x, fix_y, &x, &y);
dx = x - fix_x;
dy = y - fix_y;
translate_line(new_l, dx, dy);
clean_up();
set_latestline(new_l);
if (return_proc == copy_selected) {
add_line(new_l);
adjust_links(cur_linkmode, cur_links, dx, dy, 0, 0, 1.0, 1.0, True);
free_linkinfo(&cur_links);
} else {
list_add_line(&objects.lines, new_l);
adjust_links(cur_linkmode, cur_links, dx, dy, 0, 0, 1.0, 1.0, False);
set_lastposition(fix_x, fix_y);
set_newposition(x, y);
set_lastlinkinfo(cur_linkmode, cur_links);
cur_links = NULL;
set_action_object(F_MOVE, O_POLYLINE);
}
set_modifiedflag();
redisplay_line(new_l);
/* turn back on all relevant markers */
update_markers(new_objmask);
(*return_proc) ();
draw_mousefun_canvas();
}
static void
add_linearrow(F_line *line, F_point *prev_point, F_point *selected_point)
{
if (line->points->next == NULL)
return; /* A single point line */
if (prev_point == NULL) { /* selected_point is the first point */
if (line->back_arrow)
return;
line->back_arrow = backward_arrow();
redisplay_line(line);
} else if (selected_point->next == NULL) { /* forward arrow */
if (line->for_arrow)
return;
line->for_arrow = forward_arrow();
redisplay_line(line);
} else
return;
clean_up();
set_last_prevpoint(prev_point);
set_last_selectedpoint(selected_point);
set_latestline(line);
set_action_object(F_ADD_ARROW_HEAD, O_POLYLINE);
set_modifiedflag();
}
void
delete_linearrow(F_line *line, F_point *prev_point, F_point *selected_point)
{
if (line->points->next == NULL)
return; /* A single point line */
if (prev_point == NULL) { /* selected_point is the first point */
if (!line->back_arrow)
return;
draw_line(line, ERASE);
saved_back_arrow=line->back_arrow;
if (saved_for_arrow && saved_for_arrow != line->for_arrow)
free((char *) saved_for_arrow);
saved_for_arrow = NULL;
line->back_arrow = NULL;
redisplay_line(line);
} else if (selected_point->next == NULL) { /* forward arrow */
if (!line->for_arrow)
return;
draw_line(line, ERASE);
saved_for_arrow=line->for_arrow;
if (saved_back_arrow && saved_back_arrow != line->back_arrow)
free((char *) saved_back_arrow);
saved_back_arrow = NULL;
line->for_arrow = NULL;
redisplay_line(line);
} else
return;
clean_up();
set_last_prevpoint(prev_point);
set_last_selectedpoint(selected_point);
set_latestline(line);
set_action_object(F_DELETE_ARROW_HEAD, O_POLYLINE);
set_modifiedflag();
}
void
toggle_polyline_polygon(F_line *line, F_point *previous_point, F_point *selected_point)
{
F_point *point, *last_pt;
last_pt = last_point(line->points);
if (line->type == T_POLYLINE)
{
if (line->points->next == NULL || line->points->next->next == NULL) {
put_msg("Not enough points for a polygon");
beep();
return; /* less than 3 points - don't close the polyline */
}
if ((point = create_point()) == NULL)
return;
point->x = last_pt->x;
point->y = last_pt->y;
point->next = line->points;
line->points = point;
line->type = T_POLYGON;
clean_up();
set_last_arrows(line->for_arrow, line->back_arrow);
line->back_arrow = line->for_arrow = NULL;
}
else if (line->type == T_POLYGON)
{
point = line->points;
line->points = point->next; /* unchain the first point */
free((char *) point);
if ((line->points != selected_point) && (previous_point != NULL))
{
last_pt->next = line->points; /* let selected point become */
previous_point->next = NULL; /* first point */
line->points = selected_point;
}
line->type = T_POLYLINE;
clean_up();
}
redisplay_line(line);
set_action_object(F_OPEN_CLOSE, O_POLYLINE);
set_last_selectedpoint(line->points);
set_last_prevpoint(NULL);
set_latestline(line);
set_modifiedflag();
}
void
linepoint_deleting(F_line *line, F_point *prev_point, F_point *selected_point)
{
F_point *p, *next_point;
next_point = selected_point->next;
/* delete it and redraw underlying objects */
list_delete_line(&objects.lines, line);
redisplay_line(line);
if (line->type == T_POLYGON) {
if (prev_point == NULL) {
/* The deleted point is the first point */
line->points = next_point;
for (prev_point = next_point, p = prev_point->next;
p->next != NULL;
prev_point = p, p = p->next);
/*
* prev_point now points at next to last point (the last point is
* a copy of the first).
*/
p->x = next_point->x;
p->y = next_point->y;
next_point = p;
/*
* next_point becomes the last point. If this operation (point
* deletion) is reversed (undo), the selected_point will not be
* inserted into it original place, but will be between
* prev_point and next_point.
*/
} else
prev_point->next = next_point;
} else { /* polyline */
if (prev_point == NULL)
line->points = next_point;
else
prev_point->next = next_point;
}
/* put it back in the list and draw the new line */
list_add_line(&objects.lines, line);
/* redraw it and anything on top of it */
redisplay_line(line);
clean_up();
set_modifiedflag();
set_action_object(F_DELETE_POINT, O_POLYLINE);
set_latestline(line);
set_last_prevpoint(prev_point);
set_last_selectedpoint(selected_point);
set_last_nextpoint(next_point);
}
void
spline_line(F_spline *s)
{
F_line *l;
F_point *tmppoint;
/* Now we turn s into a line */
if ((l = create_line()) == NULL)
return;
if (open_spline(s)) {
l->type = T_POLYLINE;
l->points = s->points;
} else {
l->type = T_POLYGON;
if ((l->points = create_point())==NULL)
return;
tmppoint = last_point(s->points);
l->points->x = tmppoint->x;
l->points->y = tmppoint->y;
l->points->next = copy_points(s->points);
}
l->style = s->style;
l->thickness = s->thickness;
l->pen_color = s->pen_color;
l->fill_color = s->fill_color;
l->depth = s->depth;
l->style_val = s->style_val;
l->cap_style = s->cap_style;
l->join_style = cur_joinstyle;
l->pen_style = s->pen_style;
l->radius = DEFAULT;
l->fill_style = s->fill_style;
if (s->for_arrow) {
l->for_arrow = create_arrow();
l->for_arrow->type = s->for_arrow->type;
l->for_arrow->style = s->for_arrow->style;
l->for_arrow->thickness = s->for_arrow->thickness;
l->for_arrow->wd = s->for_arrow->wd;
l->for_arrow->ht = s->for_arrow->ht;
} else {
l->for_arrow = NULL;
}
if (s->back_arrow) {
l->back_arrow = create_arrow();
l->back_arrow->type = s->back_arrow->type;
l->back_arrow->style = s->back_arrow->style;
l->back_arrow->thickness = s->back_arrow->thickness;
l->back_arrow->wd = s->back_arrow->wd;
l->back_arrow->ht = s->back_arrow->ht;
} else {
l->back_arrow = NULL;
}
/* now we have finished creating the line, we can get rid of the spline */
delete_spline(s);
/* and put in the new line */
mask_toggle_linemarker(l);
list_add_line(&objects.lines, l);
redisplay_line(l);
set_action_object(F_CONVERT, O_SPLINE);
set_latestline(l);
set_modifiedflag();
return;
}