static void init(void)
{
const char *fenc = getenv("GRASS_ENCODING");
const char *font = getenv("GRASS_FONT");
const char *line_width = getenv("GRASS_LINE_WIDTH");
const char *text_size = getenv("GRASS_TEXT_SIZE");
const char *frame = getenv("GRASS_FRAME");
D_font(font ? font : "romans");
if (fenc)
D_encoding(fenc);
if (line_width)
COM_Line_width(atof(line_width));
if (text_size) {
double s = atof(text_size);
D_text_size(s, s);
}
D_text_rotation(0);
if (frame) {
sscanf(frame, "%lf,%lf,%lf,%lf", &screen.t, &screen.b, &screen.l, &screen.r);
COM_Set_window(screen.t, screen.b, screen.l, screen.r);
}
else
COM_Get_window(&screen.t, &screen.b, &screen.l, &screen.r);
}
int main(int argc, char **argv)
{
struct GModule *module;
struct
{
struct Option *text;
struct Option *size;
struct Option *fgcolor;
struct Option *bgcolor;
struct Option *line;
struct Option *at;
struct Option *rotation;
struct Option *align;
struct Option *linespacing;
struct Option *font;
struct Option *path;
struct Option *charset;
struct Option *input;
} opt;
struct
{
struct Flag *p;
struct Flag *g;
struct Flag *b;
struct Flag *r;
struct Flag *s;
} flag;
/* options and flags */
char *text;
double size;
double x, y;
int line;
double rotation;
char align[3];
double linespacing;
char bold;
/* window info */
struct rectinfo win;
/* command file */
FILE *cmd_fp;
char buf[512];
int first_text;
int linefeed;
int set_l;
double orig_x, orig_y;
double prev_x, prev_y;
double set_x, set_y;
double east, north;
int do_background, fg_color, bg_color;
/* initialize the GIS calls */
G_gisinit(argv[0]);
module = G_define_module();
G_add_keyword(_("display"));
G_add_keyword(_("cartography"));
module->description =
_("Draws text in the active display frame on the graphics monitor using the current font.");
opt.text = G_define_option();
opt.text->key = "text";
opt.text->type = TYPE_STRING;
opt.text->required = NO;
opt.text->description = _("Text to display");
opt.text->guisection = _("Input");
opt.input = G_define_standard_option(G_OPT_F_INPUT);
opt.input->required = NO;
opt.input->description = _("Input file");
opt.input->guisection = _("Input");
opt.fgcolor = G_define_option();
opt.fgcolor->key = "color";
opt.fgcolor->type = TYPE_STRING;
opt.fgcolor->answer = DEFAULT_COLOR;
opt.fgcolor->required = NO;
opt.fgcolor->description =
_("Text color, either a standard GRASS color or R:G:B triplet");
opt.fgcolor->gisprompt = "old_color,color,color";
opt.fgcolor->guisection = _("Text");
opt.bgcolor = G_define_option();
opt.bgcolor->key = "bgcolor";
opt.bgcolor->type = TYPE_STRING;
opt.bgcolor->required = NO;
opt.bgcolor->description =
_("Text background color, either a standard GRASS color or R:G:B triplet");
opt.bgcolor->gisprompt = "old_color,color,color";
opt.bgcolor->guisection = _("Text");
opt.rotation = G_define_option();
opt.rotation->key = "rotation";
opt.rotation->type = TYPE_DOUBLE;
opt.rotation->required = NO;
opt.rotation->answer = "0";
opt.rotation->description =
_("Rotation angle in degrees (counter-clockwise)");
opt.rotation->guisection = _("Text");
opt.linespacing = G_define_option();
opt.linespacing->key = "linespacing";
opt.linespacing->type = TYPE_DOUBLE;
opt.linespacing->required = NO;
opt.linespacing->answer = "1.25";
opt.linespacing->description = _("Line spacing");
opt.linespacing->guisection = _("Text");
opt.at = G_define_option();
opt.at->key = "at";
opt.at->key_desc = "x,y";
opt.at->type = TYPE_DOUBLE;
opt.at->required = NO;
opt.at->description =
_("Screen position at which text will begin to be drawn (percentage, [0,0] is lower left)");
opt.at->guisection = _("Position");
opt.line = G_define_option();
opt.line->key = "line";
opt.line->required = NO;
opt.line->type = TYPE_INTEGER;
opt.line->options = "1-1000";
opt.line->description =
_("The screen line number on which text will begin to be drawn");
opt.line->guisection = _("Position");
opt.align = G_define_option();
opt.align->key = "align";
opt.align->type = TYPE_STRING;
opt.align->required = NO;
opt.align->answer = "ll";
opt.align->options = "ll,lc,lr,cl,cc,cr,ul,uc,ur";
opt.align->description = _("Text alignment");
opt.align->guisection = _("Position");
opt.font = G_define_option();
opt.font->key = "font";
opt.font->type = TYPE_STRING;
opt.font->required = NO;
opt.font->description = _("Font name");
opt.font->guisection = _("Font settings");
opt.size = G_define_option();
opt.size->key = "size";
opt.size->type = TYPE_DOUBLE;
opt.size->required = NO;
opt.size->answer = "5";
opt.size->options = "0-100";
opt.size->description =
_("Height of letters in percentage of available frame height");
opt.size->guisection = _("Font settings");
opt.path = G_define_standard_option(G_OPT_F_INPUT);
opt.path->key = "path";
opt.path->required = NO;
opt.path->description = _("Path to font file");
opt.path->gisprompt = "old,font,file";
opt.path->guisection = _("Font settings");
opt.charset = G_define_option();
opt.charset->key = "charset";
opt.charset->type = TYPE_STRING;
opt.charset->required = NO;
opt.charset->description =
_("Text encoding (only applicable to TrueType fonts)");
opt.charset->guisection = _("Font settings");
flag.p = G_define_flag();
flag.p->key = 'p';
flag.p->description = _("Screen position in pixels ([0,0] is top left)");
flag.p->guisection = _("Position");
flag.g = G_define_flag();
flag.g->key = 'g';
flag.g->description = _("Screen position in geographic coordinates");
flag.g->guisection = _("Position");
flag.b = G_define_flag();
flag.b->key = 'b';
flag.b->description = _("Use bold text");
flag.b->guisection = _("Text");
flag.r = G_define_flag();
flag.r->key = 'r';
flag.r->description = _("Use radians instead of degrees for rotation");
flag.r->guisection = _("Text");
flag.s = G_define_flag();
flag.s->key = 's';
flag.s->description = _("Font size is height in pixels");
flag.s->guisection = _("Font settings");
/* check command line */
if (G_parser(argc, argv))
exit(1);
/* parse and check options and flags */
if ((opt.line->answer && opt.at->answer) ||
(flag.p->answer && flag.g->answer))
G_fatal_error(_("Please choose only one placement method"));
text = opt.text->answer;
line = (opt.line->answer ? atoi(opt.line->answer) : 1);
/* calculate rotation angle in radian */
rotation = atof(opt.rotation->answer);
if (!flag.r->answer)
rotation *= M_PI / 180.0;
rotation = fmod(rotation, 2.0 * M_PI);
if (rotation < 0.0)
rotation += 2.0 * M_PI;
strncpy(align, opt.align->answer, 2);
linespacing = atof(opt.linespacing->answer);
bold = flag.b->answer;
D_open_driver();
if (opt.font->answer)
D_font(opt.font->answer);
else if (opt.path->answer)
D_font(opt.path->answer);
if (opt.charset->answer)
D_encoding(opt.charset->answer);
D_setup_unity(0);
/* figure out where to put text */
D_get_src(&win.t, &win.b, &win.l, &win.r);
if (flag.s->answer)
size = atof(opt.size->answer);
else
#ifdef BACKWARD_COMPATIBILITY
size = atof(opt.size->answer) / 100.0 * (win.b - win.t) / linespacing;
#else
size = atof(opt.size->answer) / 100.0 * (win.b - win.t);
#endif
fg_color = D_parse_color(opt.fgcolor->answer, TRUE);
if (opt.bgcolor->answer) {
do_background = 1;
bg_color = D_parse_color(opt.bgcolor->answer, TRUE);
if (bg_color == 0) /* ie color="none" */
do_background = 0;
} else
do_background = 0;
set_color(opt.fgcolor->answer);
orig_x = orig_y = 0;
if (opt.at->answer) {
if (get_coordinates(&x, &y, &east, &north,
win, opt.at->answers,
flag.p->answer, flag.g->answer))
G_fatal_error(_("Invalid coordinates"));
orig_x = x;
orig_y = y;
}
else {
x = win.l + (size * linespacing + 0.5) - size; /* d.text: +5 */
y = win.t + line * (size * linespacing + 0.5);
}
prev_x = x;
prev_y = y;
D_text_size(size, size);
D_text_rotation(rotation * 180.0 / M_PI);
if (text) {
double x2, y2;
x2 = x;
y2 = y;
if (text[0])
draw_text(text, &x2, &y2, size, align, rotation, bold, do_background, fg_color, bg_color);
/* reset */
D_text_size(5, 5);
D_text_rotation(0.0);
D_save_command(G_recreate_command());
D_close_driver();
exit(EXIT_SUCCESS);
}
if (!opt.input->answer || strcmp(opt.input->answer, "-") == 0)
cmd_fp = stdin;
else {
cmd_fp = fopen(opt.input->answer, "r");
if (!cmd_fp)
G_fatal_error(_("Unable to open input file <%s>"), opt.input->answer);
}
if (isatty(fileno(cmd_fp)))
fprintf(stderr,
_("\nPlease enter text instructions. Enter EOF (ctrl-d) on last line to quit\n"));
set_x = set_y = set_l = 0;
first_text = 1;
linefeed = 1;
/* do the plotting */
while (fgets(buf, sizeof(buf), cmd_fp)) {
int buf_len;
char *buf_ptr, *ptr;
buf_len = strlen(buf) - 1;
for (; buf[buf_len] == '\r' || buf[buf_len] == '\n'; buf_len--) ;
buf[buf_len + 1] = 0;
if (buf[0] == '.' && buf[1] != '.') {
int i;
double d;
G_squeeze(buf); /* added 6/91 DBS @ CWU */
for (buf_ptr = buf + 2; *buf_ptr == ' '; buf_ptr++) ;
buf_len = strlen(buf_ptr);
switch (buf[1] & 0x7f) {
case 'F':
/* font */
if ((ptr = strchr(buf_ptr, ':')))
*ptr = 0;
D_font(buf_ptr);
if (ptr)
D_encoding(ptr + 1);
break;
case 'C':
/* color */
set_color(buf_ptr);
fg_color = D_parse_color(buf_ptr, 1);
break;
case 'G':
/* background color */
bg_color = D_parse_color(buf_ptr, 1);
do_background = 1;
break;
case 'S':
/* size */
i = 0;
if (strchr("+-", buf_ptr[0]))
i = 1;
d = atof(buf_ptr);
if (buf_ptr[buf_len - 1] != 'p')
#ifdef BACKWARD_COMPATIBILITY
d *= (win.b - win.t) / 100.0 / linespacing;
#else
d *= (win.b - win.t) / 100.0;
#endif
size = d + (i ? size : 0);
D_text_size(size, size);
break;
case 'B':
/* bold */
bold = (atoi(buf_ptr) ? 1 : 0);
break;
case 'A':
/* align */
strncpy(align, buf_ptr, 2);
break;
case 'R':
/* rotation */
i = 0;
if (strchr("+-", buf_ptr[0]))
i = 1;
d = atof(buf_ptr);
if (buf_ptr[buf_len - 1] != 'r')
d *= M_PI / 180.0;
d += (i ? rotation : 0.0);
rotation = fmod(d, 2.0 * M_PI);
if (rotation < 0.0)
rotation += 2.0 * M_PI;
D_text_rotation(rotation * 180.0 / M_PI);
break;
case 'I':
/* linespacing */
linespacing = atof(buf_ptr);
break;
case 'X':
/* x */
set_l = 0;
set_x = 1;
i = 0;
if (strchr("+-", buf_ptr[0]))
i = 1;
d = atof(buf_ptr);
if (buf_ptr[buf_len - 1] == '%')
/* percentage */
d *= (win.r - win.l) / 100.0;
else if (buf_ptr[buf_len - 1] != 'p')
/* column */
d = (d - 1) * size * linespacing + 0.5;
x = prev_x = d + (i ? x : orig_x);
break;
case 'Y':
/* y */
set_l = 0;
set_y = 1;
i = 0;
if (strchr("+-", buf_ptr[0]))
i = 1;
d = atof(buf_ptr);
if (buf_ptr[buf_len - 1] == '%')
/* percentage */
d = win.b - d * (win.b - win.t) / 100.0;
else if (buf_ptr[buf_len - 1] != 'p')
/* row */
d *= size * linespacing + 0.5;
y = prev_y = d + (i ? y : orig_y);
break;
case 'L':
/* linefeed */
set_l = 1;
linefeed = (atoi(buf_ptr) ? 1 : 0);
break;
case 'E':
i = 0;
if (strchr("+-", buf_ptr[0]))
i = 1;
d = atof(buf_ptr);
if (buf_ptr[buf_len - 1] == '%')
d *= (win.r - win.l) / 100.0;
else if (buf_ptr[buf_len - 1] != 'p')
d = D_u_to_d_col(d);
x = prev_x = orig_x = d + (i ? orig_x : win.l);
break;
case 'N':
i = 0;
if (strchr("+-", buf_ptr[0]))
i = 1;
d = atof(buf_ptr);
if (buf_ptr[buf_len - 1] == '%')
d *= (win.b - win.t) / 100.0;
else if (buf_ptr[buf_len - 1] != 'p')
d = D_u_to_d_row(d);
y = prev_y = orig_y = d + (i ? orig_y : win.t);
break;
}
}
else {
buf_ptr = buf;
if (buf[0] == '.' && buf[1] == '.')
buf_ptr++;
if (!first_text && (linefeed || set_l)) {
/* if x is not given, increment x */
if (!set_x)
x = prev_x +
(size * linespacing + 0.5) * sin(rotation);
/* if y is not given, increment y */
if (!set_y)
y = prev_y +
(size * linespacing + 0.5) * cos(rotation);
prev_x = x;
prev_y = y;
}
set_x = set_y = set_l = first_text = 0;
draw_text(buf_ptr, &x, &y, size, align, rotation, bold, do_background, fg_color, bg_color);
}
}
if (cmd_fp != stdin)
fclose(cmd_fp);
/* reset */
D_text_size(5, 5);
D_text_rotation(0.0);
D_close_driver();
exit(EXIT_SUCCESS);
}
static void draw_text(char *text, double *x, double *y, double size, char *align,
double rotation, char bold, int do_background, int fg_color, int bg_color)
{
double w, h;
double t, b, l, r;
double c, s;
int pt, pb, pl, pr;
/* TODO: get text dimension */
/* R_get_text_box() does not work with rotation and returns a little bit
* bigger dimension than actual text size */
if (rotation != 0.0)
D_text_rotation(0.0);
D_get_text_box(text, &t, &b, &l, &r);
if (rotation != 0.0)
D_text_rotation(rotation * 180.0 / M_PI);
w = r - l;
h = b - t;
if (w > 0)
w += 0.2 * size;
else
/* D_text() does not draw " ". */
w = 0.8 * size;
if (h > 0)
h += 0.2 * size;
else
/* D_text() does not draw " ". */
h = 0.8 * size;
c = cos(rotation);
s = sin(rotation);
if (strcmp(align, "ll") != 0) {
switch (align[0]) {
case 'l':
break;
case 'c':
*x += h / 2.0 * s;
*y += h / 2.0 * c;
break;
case 'u':
*x += h * s;
*y += h * c;
break;
}
switch (align[1]) {
case 'l':
break;
case 'c':
*x -= w / 2.0 * c;
*y += w / 2.0 * s;
break;
case 'r':
*x -= w * c;
*y += w * s;
break;
}
}
if (do_background) {
pl = *x - size/2; /* some pixels margin for both sides */
pt = *y + size/2;
pr = *x + w + size/2;
pb = *y - h - size/2;
D_use_color(bg_color);
D_box_abs(pl, pt, pr, pb); /* draw the box */
D_use_color(fg_color); /* restore */
}
D_pos_abs(*x, *y);
D_text(text);
if (bold) {
D_pos_abs(*x, *y + 1);
D_text(text);
D_pos_abs(*x + 1, *y);
D_text(text);
}
*x += w * c;
*y -= w * s;
return;
}
int draw_n_arrow(double east, double north, double rotation, char *lbl,
int rot_with_text, double fontsize, char *n_arrow_num,
double line_width)
{
double x_pos, y_pos;
double t, b, l, r;
double tt, tb, tl, tr; /* text box */
SYMBOL *Symb;
RGBA_Color *line_color, *fill_color;
int R, G, B;
double x0, y0;
char icon[64];
double symbol_size;
/* Establish text size */
if (fontsize > 0)
D_text_size(fontsize, fontsize);
D_setup_unity(0);
D_get_src(&t, &b, &l, &r);
x_pos = l + (int)(east * (r - l) / 100.);
y_pos = t + (int)((100. - north) * (b - t) / 100.);
if (line_width > 0)
D_line_width(line_width);
if (fontsize > 0) {
/* draw the label (default "N") */
if (rot_with_text)
D_text_rotation(rotation * 180.0 / M_PI);
D_get_text_box(lbl, &tt, &tb, &tl, &tr);
D_use_color(text_color);
/* positions manually tuned */
switch (n_arrow_num[0]) {
case '1':
D_pos_abs(x_pos - sin(rotation) * 50 - (tr + tl) / 2,
y_pos - cos(rotation) * 50 - (tb + tt) / 2);
D_text(lbl);
break;
case '3':
D_pos_abs(x_pos - sin(rotation) * 60 - (tr + tl) / 2,
y_pos - cos(rotation) * 60 - (tb + tt) / 2);
D_text(lbl);
break;
case '4':
D_pos_abs(x_pos - sin(rotation) * 45 - (tr + tl) / 2,
y_pos - cos(rotation) * 45 - (tb + tt) / 2);
D_text(lbl);
break;
case '7':
D_pos_abs(x_pos - sin(rotation) * 70 - (tr + tl) / 2,
y_pos - cos(rotation) * 70 - (tb + tt) / 2);
D_text(lbl);
break;
case '8':
D_pos_abs(x_pos - sin(rotation) * 60 - (tr + tl) / 2,
y_pos - cos(rotation) * 60 - (tb + tt) / 2);
D_text(lbl);
break;
case '9':
D_pos_abs(x_pos - sin(rotation) * 55 - (tr + tl) / 2,
y_pos - cos(rotation) * 55 - (tb + tt) / 2);
D_text(lbl);
break;
case 'f':
D_pos_abs(x_pos - sin(rotation) * 55 - (tr + tl) / 2,
y_pos - cos(rotation) * 55 - (tb + tt) / 2);
D_text(lbl);
break;
case 'b':
D_pos_abs(x_pos - sin(rotation) * 48.5 - (tr + tl) / 2,
y_pos - cos(rotation) * 48.5 - (tb + tt) / 2);
D_text(lbl);
break;
case 'a':
D_pos_abs(x_pos - sin(rotation) * 50 - (tr + tl) / 2,
y_pos - cos(rotation) * 50 - (tb + tt) / 2);
D_text(lbl);
break;
case 's':
D_pos_abs(x_pos - sin(rotation) * 50 - (tr + tl) / 2,
y_pos - cos(rotation) * 50 - (tb + tt) / 2);
D_text(lbl);
break;
case '2':
case '5':
case '6':
break;
default:
G_fatal_error(_("Could not parse symbol"));
}
}
/* display the north arrow symbol */
line_color = G_malloc(sizeof(RGBA_Color));
fill_color = G_malloc(sizeof(RGBA_Color));
if (D_color_number_to_RGB(fg_color, &R, &G, &B) == 0)
line_color->a = RGBA_COLOR_TRANSPARENT;
else
line_color->a = RGBA_COLOR_OPAQUE;
line_color->r = (unsigned char)R;
line_color->g = (unsigned char)G;
line_color->b = (unsigned char)B;
if (D_color_number_to_RGB(bg_color, &R, &G, &B) == 0)
fill_color->a = RGBA_COLOR_TRANSPARENT;
else
fill_color->a = RGBA_COLOR_OPAQUE;
fill_color->r = (unsigned char)R;
fill_color->g = (unsigned char)G;
fill_color->b = (unsigned char)B;
/* sizes manually tuned */
switch (n_arrow_num[0]) {
case '1':
symbol_size = 35.;
break;
case '2':
symbol_size = 19.;
break;
case '3':
symbol_size = 20.;
break;
case '4':
symbol_size = 15.;
break;
case '5':
case '6':
symbol_size = 14.;
break;
case '7':
symbol_size = 23.;
break;
case '8':
case '9':
symbol_size = 17.;
break;
case 'b':
symbol_size = 80.;
break;
case 'f':
symbol_size = 100.;
break;
case 'a':
if (n_arrow_num[5] == '2')
symbol_size = 53.;
else
symbol_size = 70.;
break;
case 's':
symbol_size = 80.;
break;
default:
G_fatal_error(_("Could not parse symbol"));
}
x0 = D_d_to_u_col(x_pos);
y0 = D_d_to_u_row(y_pos);
if (n_arrow_num[0] == 'b')
strcpy(icon, "n_arrows/basic_compass");
else if (n_arrow_num[0] == 'f')
strcpy(icon, "n_arrows/fancy_compass");
else if (n_arrow_num[0] == 'a' && n_arrow_num[5] == '1')
strcpy(icon, "basic/arrow1");
else if (n_arrow_num[0] == 'a' && n_arrow_num[5] == '2')
strcpy(icon, "basic/arrow2");
else if (n_arrow_num[0] == 'a' && n_arrow_num[5] == '3')
strcpy(icon, "basic/arrow3");
else if (n_arrow_num[0] == 's')
strcpy(icon, "extra/4pt_star");
else {
strcpy(icon, "n_arrows/n_arrow");
strncat(icon, n_arrow_num, 32);
}
Symb = S_read(icon);
if (!Symb)
G_fatal_error(_("Could not read symbol \"%s\""), icon);
S_stroke(Symb, symbol_size, rotation * (180 / M_PI), 0);
D_symbol(Symb, x0, y0, line_color, fill_color);
if (line_width > 0)
D_line_width(0);
G_free(Symb);
G_free(line_color);
G_free(fill_color);
return 0;
}
