Hi!
I have a patch to d.labels that I intend to apply. This patch adds
support for positioning the label _exactly_ on the co-ordinated given in
the labels file. The reason I need this is that v.label.sa calculates
precise locations for labels, and naturally I want the labels to be
placed exactly on that point.
Feel free to comment on the patch. Next I need to look at how ps.map
positions labels...
Please see [1] for example screenshots.
--Wolf
[1] http://wolf.bergenheim.net/src/GRASS/v.label.sa
--
<:3 )---- Wolf Bergenheim ----( 8:>
Index: do_labels.c
===================================================================
--- do_labels.c (revision 31091)
+++ do_labels.c (working copy)
@@ -15,6 +15,7 @@
#define TOP 0
#define CENT 1
#define BOT 2
+#define NONE 3
#define LEFT 0
#define RITE 2
#define YES 1
@@ -243,7 +244,10 @@
G_debug(3, "line %d ='%s'", n_lines, line);
- Y = (int)(D_u_to_d_row(north - (line_size*1.2) - ((n_lines-1)*line_size) ));
+ if (yref == NONE)
+ Y = D_u_to_d_row(north);
+ else
+ Y = (int)(D_u_to_d_row(north - (line_size*1.2) - ((n_lines-1)*line_size) ));
R_move_abs(X, Y) ;
R_text_rotation(0.0); /* reset */
R_get_text_box(line, &t, &b, &l, &r) ;
@@ -368,7 +372,10 @@
*lptr = '\0' ;
/* figure out text placement */
- Y = (int)(D_u_to_d_row(north - (line_size*1.2) - ((i-1)*line_size) ));
+ if (yref == NONE)
+ Y = D_u_to_d_row(north);
+ else
+ Y = (int)(D_u_to_d_row(north - (line_size*1.2) - ((i-1)*line_size) ));
text_x = X + X_just_offset; /* reset after G_rotate_around_point_int() */
text_y = Y + Y_just_offset;
G_rotate_around_point_int(X, Y0, &text_x, &text_y, -1*rotation);
@@ -423,7 +430,10 @@
*lptr = '\0' ;
/* figure out text placement */
- Y = (int)(D_u_to_d_row(north - (line_size*1.2) - ((i-1)*line_size) ));
+ if (yref == NONE)
+ Y = D_u_to_d_row(north);
+ else
+ Y = (int)(D_u_to_d_row(north - (line_size*1.2) - ((i-1)*line_size) ));
text_x = X + X_just_offset; /* reset after G_rotate_around_point_int() */
text_y = Y + Y_just_offset;
G_rotate_around_point_int(X, Y0, &text_x, &text_y, -1*rotation);
@@ -478,6 +488,8 @@
xref = LEFT;
else if (strcmp (word, "right") == 0)
xref = RITE;
+ else if (strcmp (word, "none") == 0)
+ xref = LEFT;
else
return 0;
xok = 1;
@@ -500,6 +512,8 @@
yref = BOT;
else if (strcmp (word, "bottom") == 0)
yref = BOT;
+ else if (strcmp (word, "none") == 0)
+ yref = NONE;
else
return 0;
yok = 1;
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