Commit | Line | Data |
37503827 |
1 | package SQL::Translator::Producer::Diagram; |
2 | |
3 | # ------------------------------------------------------------------- |
60dcc980 |
4 | # $Id: Diagram.pm,v 1.10 2004-02-11 21:30:19 kycl4rk Exp $ |
37503827 |
5 | # ------------------------------------------------------------------- |
977651a5 |
6 | # Copyright (C) 2002-4 SQLFairy Authors |
37503827 |
7 | # |
8 | # This program is free software; you can redistribute it and/or |
9 | # modify it under the terms of the GNU General Public License as |
10 | # published by the Free Software Foundation; version 2. |
11 | # |
12 | # This program is distributed in the hope that it will be useful, but |
13 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | # General Public License for more details. |
16 | # |
17 | # You should have received a copy of the GNU General Public License |
18 | # along with this program; if not, write to the Free Software |
19 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
20 | # 02111-1307 USA |
21 | # ------------------------------------------------------------------- |
22 | |
e966b2b0 |
23 | =head1 NAME |
24 | |
25 | SQL::Translator::Producer::Diagram - ER diagram producer for SQL::Translator |
26 | |
27 | =head1 SYNOPSIS |
28 | |
29 | Use via SQL::Translator: |
30 | |
31 | use SQL::Translator; |
32 | |
33 | my $t = SQL::Translator->new( parser => 'MySQL', '...' ); |
34 | $t->translate; |
35 | |
36 | Or use more directly: |
37 | |
38 | use SQL::Translator; |
39 | use SQL::Translator::MySQL 'parse'; |
40 | |
41 | my $t = SQL::Translator->new( filename => '...' );; |
42 | parse( $t, |
43 | |
44 | |
45 | =cut |
46 | |
37503827 |
47 | use strict; |
48 | use GD; |
49 | use Data::Dumper; |
761fa621 |
50 | use SQL::Translator::Schema::Constants; |
37503827 |
51 | use SQL::Translator::Utils qw(debug); |
52 | |
53 | use vars qw[ $VERSION $DEBUG ]; |
60dcc980 |
54 | $VERSION = sprintf "%d.%02d", q$Revision: 1.10 $ =~ /(\d+)\.(\d+)/; |
37503827 |
55 | $DEBUG = 0 unless defined $DEBUG; |
56 | |
57 | use constant VALID_FONT_SIZE => { |
58 | small => 1, |
59 | medium => 1, |
60 | large => 1, |
61 | huge => 1, |
62 | }; |
63 | |
64 | use constant VALID_IMAGE_TYPE => { |
65 | png => 1, |
66 | jpeg => 1, |
67 | }; |
68 | |
69 | sub produce { |
761fa621 |
70 | my $t = shift; |
71 | my $schema = $t->schema; |
37503827 |
72 | my $args = $t->producer_args; |
73 | local $DEBUG = $t->debug; |
761fa621 |
74 | debug("Schema =\n", Dumper( $schema )); |
37503827 |
75 | debug("Producer args =\n", Dumper( $args )); |
76 | |
6a20798b |
77 | my $out_file = $args->{'out_file'} || ''; |
7652721a |
78 | my $output_type = $args->{'output_type'} || 'png'; |
6a20798b |
79 | my $title = $args->{'title'} || $t->filename; |
80 | my $font_size = $args->{'font_size'} || 'medium'; |
81 | my $imap_file = $args->{'imap_file'} || ''; |
82 | my $imap_url = $args->{'imap_url'} || ''; |
37503827 |
83 | my $no_columns = $args->{'no_columns'}; |
84 | my $no_lines = $args->{'no_lines'}; |
85 | my $add_color = $args->{'add_color'}; |
86 | my $show_fk_only = $args->{'show_fk_only'}; |
87 | my $join_pk_only = $args->{'join_pk_only'}; |
88 | my $natural_join = $args->{'natural_join'} || $join_pk_only; |
89 | my $skip_fields = $args->{'skip_fields'}; |
761fa621 |
90 | my %skip = map { s/^\s+|\s+$//g; $_,1 } split (/,/, $skip_fields); |
91 | |
92 | $schema->make_natural_joins( |
93 | join_pk_only => $join_pk_only, |
94 | skip_fields => $args->{'skip_fields'}, |
95 | ) if $natural_join; |
37503827 |
96 | |
7652721a |
97 | die "Invalid image type '$output_type'" |
98 | unless VALID_IMAGE_TYPE ->{ $output_type }; |
37503827 |
99 | die "Invalid font size '$font_size'" |
100 | unless VALID_FONT_SIZE->{ $font_size }; |
101 | |
102 | # |
103 | # Layout the image. |
104 | # |
105 | my $font = |
106 | $font_size eq 'small' ? gdTinyFont : |
107 | $font_size eq 'medium' ? gdSmallFont : |
108 | $font_size eq 'large' ? gdLargeFont : gdGiantFont; |
761fa621 |
109 | my @tables = $schema->get_tables; |
110 | my $no_tables = scalar @tables; |
550022e5 |
111 | $no_columns = 0 unless $no_columns =~ /^\d+$/; |
37503827 |
112 | $no_columns ||= sprintf( "%.0f", sqrt( $no_tables ) + .5 ); |
113 | $no_columns ||= .5; |
114 | my $no_per_col = sprintf( "%.0f", $no_tables/$no_columns + .5 ); |
115 | |
116 | my @shapes; |
117 | my ( $max_x, $max_y ); # the furthest x and y used |
118 | my $orig_y = 40; # used to reset y for each column |
119 | my ( $x, $y ) = (30,$orig_y); # where to start |
120 | my $cur_col = 1; # the current column |
121 | my $no_this_col = 0; # number of tables in current column |
122 | my $this_col_x = $x; # current column's x |
123 | my $gutter = 30; # distance b/w columns |
124 | my %nj_registry; # for locations of fields for natural joins |
125 | my @fk_registry; # for locations of fields for foreign keys |
126 | my %table_x; # for max x of each table |
127 | my $field_no; # counter to give distinct no. to each field |
761fa621 |
128 | my %coords; # holds fields coordinates |
6a20798b |
129 | my @imap_coords; # for making clickable image map |
37503827 |
130 | my %legend; |
131 | |
761fa621 |
132 | for my $table ( @tables ) { |
133 | my $table_name = $table->name; |
37503827 |
134 | my $top = $y; |
135 | push @shapes, |
136 | [ 'string', $font, $this_col_x, $y, $table_name, 'black' ]; |
37503827 |
137 | $y += $font->height + 2; |
138 | my $below_table_name = $y; |
139 | $y += 2; |
140 | my $this_max_x = |
141 | $this_col_x + ($font->width * length($table_name)); |
142 | |
143 | debug("Processing table '$table_name'"); |
144 | |
761fa621 |
145 | my @fields = $table->get_fields; |
146 | debug("Fields = ", join(', ', map { $_->name } @fields)); |
37503827 |
147 | |
60dcc980 |
148 | my ( @fld_desc, $max_name, $max_desc ); |
37503827 |
149 | for my $f ( @fields ) { |
761fa621 |
150 | my $name = $f->name or next; |
151 | my $is_pk = $f->is_primary_key; |
37503827 |
152 | |
60dcc980 |
153 | my @attr; |
154 | |
37503827 |
155 | # |
156 | # Decide if we should skip this field. |
157 | # |
158 | if ( $show_fk_only ) { |
761fa621 |
159 | next unless $is_pk || $f->is_foreign_key; |
37503827 |
160 | } |
161 | |
162 | if ( $is_pk ) { |
60dcc980 |
163 | push @attr, 'PK'; |
164 | $legend{'Primary key'} = '[PK]'; |
37503827 |
165 | } |
cd9ccb3e |
166 | |
167 | if ( $f->is_unique ) { |
60dcc980 |
168 | push @attr, 'U'; |
37503827 |
169 | $legend{'Unique constraint'} = '[U]'; |
170 | } |
171 | |
60dcc980 |
172 | if ( $f->is_foreign_key ) { |
173 | push @attr, 'FK'; |
174 | $legend{'Foreign Key'} = '[FK]'; |
175 | } |
176 | |
177 | my $attr = ''; |
178 | if ( @attr ) { |
179 | $attr .= '[' . join(', ', @attr) . ']'; |
180 | } |
181 | |
761fa621 |
182 | my $desc = $f->data_type; |
60dcc980 |
183 | $desc .= '('.$f->size.')' if $f->size && |
184 | $f->data_type =~ /^(VAR)?CHAR2?$/i; |
37503827 |
185 | |
186 | my $nlen = length $name; |
60dcc980 |
187 | my $dlen = length $desc; |
37503827 |
188 | $max_name = $nlen if $nlen > $max_name; |
60dcc980 |
189 | $max_desc = $dlen if $dlen > $max_desc; |
190 | push @fld_desc, [ $name, $desc, $f->{'name'}, $is_pk, $attr ]; |
37503827 |
191 | } |
192 | |
60dcc980 |
193 | $max_name += 2; |
194 | $max_desc += 2; |
37503827 |
195 | for my $fld_desc ( @fld_desc ) { |
60dcc980 |
196 | my ( $name, $desc, $orig_name, $is_pk, $attr ) = @$fld_desc; |
197 | my $diff1 = $max_name - length $name; |
198 | my $diff2 = $max_desc - length $desc; |
199 | $name .= ' ' x $diff1; |
200 | $desc .= ' ' x $diff2; |
201 | $desc = $name . $desc . $attr; |
37503827 |
202 | |
203 | push @shapes, [ 'string', $font, $this_col_x, $y, $desc, 'black' ]; |
204 | $y += $font->height + 2; |
205 | my $length = $this_col_x + ( $font->width * length( $desc ) ); |
206 | $this_max_x = $length if $length > $this_max_x; |
207 | |
208 | my $constraints = $table->{'fields'}{ $orig_name }{'constraints'}; |
209 | |
210 | if ( $natural_join && !$skip{ $orig_name } ) { |
211 | push @{ $nj_registry{ $orig_name } }, $table_name; |
212 | } |
37503827 |
213 | |
214 | my $y_link = $y - $font->height/2; |
761fa621 |
215 | $coords{ $table_name }{ $orig_name }{'coords'} = { |
37503827 |
216 | left => [ $this_col_x - 6, $y_link ], |
217 | right => [ $length + 2 , $y_link ], |
218 | table => $table_name, |
219 | field_no => ++$field_no, |
220 | is_pk => $is_pk, |
221 | fld_name => $orig_name, |
222 | }; |
6a20798b |
223 | |
224 | push @imap_coords, [ |
225 | $imap_url."#$table_name-$orig_name", |
226 | $this_col_x, $y - $font->height, $length, $y_link, |
227 | ]; |
37503827 |
228 | } |
229 | |
761fa621 |
230 | unless ( $natural_join ) { |
231 | for my $c ( $table->get_constraints ) { |
232 | next unless $c->type eq FOREIGN_KEY; |
233 | my $fk_table = $c->reference_table or next; |
234 | |
235 | for my $field_name ( $c->fields ) { |
236 | for my $fk_field ( $c->reference_fields ) { |
237 | next unless defined $schema->get_table( $fk_table ); |
238 | push @fk_registry, [ |
761fa621 |
239 | [ $fk_table , $fk_field ], |
761a28bb |
240 | [ $table_name, $field_name ], |
761fa621 |
241 | ]; |
242 | } |
243 | } |
244 | } |
245 | } |
246 | |
37503827 |
247 | $this_max_x += 5; |
248 | $table_x{ $table_name } = $this_max_x + 5; |
249 | push @shapes, [ 'line', $this_col_x - 5, $below_table_name, |
250 | $this_max_x, $below_table_name, 'black' ]; |
251 | my @bounds = ( $this_col_x - 5, $top - 5, $this_max_x, $y + 5 ); |
252 | if ( $add_color ) { |
253 | unshift @shapes, [ |
254 | 'filledRectangle', |
255 | $bounds[0], $bounds[1], |
256 | $this_max_x, $below_table_name, |
257 | 'khaki' |
258 | ]; |
259 | unshift @shapes, [ 'filledRectangle', @bounds, 'white' ]; |
260 | } |
6a20798b |
261 | |
262 | push @imap_coords, [ |
263 | $imap_url."#$table_name", |
264 | $bounds[0], $bounds[1], $this_max_x, $below_table_name, |
265 | ]; |
266 | |
37503827 |
267 | push @shapes, [ 'rectangle', @bounds, 'black' ]; |
268 | $max_x = $this_max_x if $this_max_x > $max_x; |
269 | $y += 25; |
270 | |
271 | if ( ++$no_this_col == $no_per_col ) {# if we've filled up this column |
272 | $cur_col++; # up the column number |
273 | $no_this_col = 0; # reset the number of tables |
274 | $max_x += $gutter; # push the x over for next column |
275 | $this_col_x = $max_x; # remember the max x for this col |
276 | $max_y = $y if $y > $max_y; # note the max y |
277 | $y = $orig_y; # reset the y for next column |
278 | } |
279 | } |
280 | |
281 | # |
282 | # Connect the lines. |
283 | # |
284 | my %horz_taken; |
285 | my %done; |
286 | unless ( $no_lines ) { |
287 | my @position_bunches; |
288 | |
289 | if ( $natural_join ) { |
290 | for my $field_name ( keys %nj_registry ) { |
291 | my @positions; |
292 | my @table_names = |
293 | @{ $nj_registry{ $field_name } || [] } or next; |
294 | next if scalar @table_names == 1; |
295 | |
296 | for my $table_name ( @table_names ) { |
297 | push @positions, |
761fa621 |
298 | $coords{ $table_name }{ $field_name }{'coords'}; |
37503827 |
299 | } |
300 | |
301 | push @position_bunches, [ @positions ]; |
302 | } |
303 | } |
304 | else { |
305 | for my $pair ( @fk_registry ) { |
306 | push @position_bunches, [ |
761fa621 |
307 | $coords{$pair->[0][0]}{ $pair->[0][1] }{'coords'}, |
308 | $coords{$pair->[1][0]}{ $pair->[1][1] }{'coords'}, |
37503827 |
309 | ]; |
310 | } |
311 | } |
312 | |
313 | my $is_directed = $natural_join ? 0 : 1; |
314 | |
315 | for my $bunch ( @position_bunches ) { |
316 | my @positions = @$bunch; |
317 | |
318 | for my $i ( 0 .. $#positions ) { |
319 | my $pos1 = $positions[ $i ]; |
320 | my ( $ax, $ay ) = @{ $pos1->{'left'} || [] } or next; |
321 | my ( $bx, $by ) = @{ $pos1->{'right'} || [] } or next; |
322 | my $table1 = $pos1->{'table'}; |
323 | my $fno1 = $pos1->{'field_no'}; |
324 | my $is_pk = $pos1->{'is_pk'}; |
325 | next if $join_pk_only and !$is_pk; |
326 | |
327 | for my $j ( 0 .. $#positions ) { |
328 | my $pos2 = $positions[ $j ]; |
329 | my ( $cx, $cy ) = @{ $pos2->{'left'} || [] } or next; |
330 | my ( $dx, $dy ) = @{ $pos2->{'right'} || [] } or next; |
331 | my $table2 = $pos2->{'table'}; |
332 | my $fno2 = $pos2->{'field_no'}; |
333 | next if $table1 eq $table2; |
334 | next if $done{ $fno1 }{ $fno2 }; |
335 | next if $fno1 == $fno2; |
336 | |
337 | my @distances = (); |
338 | push @distances, [ |
339 | abs ( $ax - $cx ) + abs ( $ay - $cy ), |
340 | [ $ax, $ay, $cx, $cy ], |
341 | [ 'left', 'left' ] |
342 | ]; |
343 | push @distances, [ |
344 | abs ( $ax - $dx ) + abs ( $ay - $dy ), |
345 | [ $ax, $ay, $dx, $dy ], |
346 | [ 'left', 'right' ], |
347 | ]; |
348 | push @distances, [ |
349 | abs ( $bx - $cx ) + abs ( $by - $cy ), |
350 | [ $bx, $by, $cx, $cy ], |
351 | [ 'right', 'left' ], |
352 | ]; |
353 | push @distances, [ |
354 | abs ( $bx - $dx ) + abs ( $by - $dy ), |
355 | [ $bx, $by, $dx, $dy ], |
356 | [ 'right', 'right' ], |
357 | ]; |
358 | @distances = sort { $a->[0] <=> $b->[0] } @distances; |
359 | my $shortest = $distances[0]; |
360 | my ( $x1, $y1, $x2, $y2 ) = @{ $shortest->[1] }; |
361 | my ( $side1, $side2 ) = @{ $shortest->[2] }; |
362 | my ( $start, $end ); |
363 | my $offset = 9; |
364 | my $col1_right = $table_x{ $table1 }; |
365 | my $col2_right = $table_x{ $table2 }; |
366 | |
367 | my $diff = 0; |
368 | if ( $x1 == $x2 ) { |
369 | while ( $horz_taken{ $x1 + $diff } ) { |
370 | $diff = $side1 eq 'left' ? $diff - 2 : $diff + 2; |
371 | } |
372 | $horz_taken{ $x1 + $diff } = 1; |
373 | } |
374 | |
375 | if ( $side1 eq 'left' ) { |
376 | $start = $x1 - $offset + $diff; |
377 | } |
378 | else { |
379 | $start = $col1_right + $diff; |
380 | } |
381 | |
382 | if ( $side2 eq 'left' ) { |
383 | $end = $x2 - $offset + $diff; |
384 | } |
385 | else { |
386 | $end = $col2_right + $diff; |
387 | } |
388 | |
389 | push @shapes, |
390 | [ 'line', $x1, $y1, $start, $y1, 'cadetblue' ]; |
391 | push @shapes, |
392 | [ 'line', $start, $y1, $end, $y2, 'cadetblue' ]; |
393 | push @shapes, |
394 | [ 'line', $end, $y2, $x2, $y2, 'cadetblue' ]; |
395 | |
396 | if ( $is_directed ) { |
397 | if ( |
398 | $side1 eq 'right' && $side2 eq 'left' |
399 | || |
400 | $side1 eq 'left' && $side2 eq 'left' |
401 | ) { |
402 | push @shapes, [ |
403 | 'line', $x2 - 3, $y2 - 3, $x2, $y2, 'cadetblue' |
404 | ]; |
405 | push @shapes, [ |
406 | 'line', $x2 - 3, $y2 + 3, $x2, $y2, 'cadetblue' |
407 | ]; |
408 | push @shapes, [ |
409 | 'line', $x2 - 3, $y2 - 3, $x2 - 3, $y2 +3, |
410 | 'cadetblue' |
411 | ]; |
412 | } |
413 | else { |
414 | push @shapes, [ |
415 | 'line', $x2 + 3, $y2 - 3, $x2, $y2, 'cadetblue' |
416 | ]; |
417 | push @shapes, [ |
418 | 'line', $x2 + 3, $y2 + 3, $x2, $y2, 'cadetblue' |
419 | ]; |
420 | push @shapes, [ |
421 | 'line', $x2 + 3, $y2 - 3, $x2 + 3, $y2 +3, |
422 | 'cadetblue' |
423 | ]; |
424 | } |
425 | } |
426 | |
427 | $done{ $fno1 }{ $fno2 } = 1; |
428 | $done{ $fno2 }{ $fno1 } = 1; |
429 | } |
430 | } |
431 | } |
432 | } |
433 | |
434 | # |
435 | # Add the title, legend and signature. |
436 | # |
437 | my $large_font = gdLargeFont; |
438 | my $title_len = $large_font->width * length $title; |
439 | push @shapes, [ |
440 | 'string', $large_font, $max_x/2 - $title_len/2, 10, $title, 'black' |
441 | ]; |
442 | |
443 | if ( %legend ) { |
444 | $max_y += 5; |
445 | push @shapes, [ |
446 | 'string', $font, $x, $max_y - $font->height - 4, 'Legend', 'black' |
447 | ]; |
448 | $max_y += $font->height + 4; |
449 | |
450 | my $longest; |
451 | for my $len ( map { length $_ } values %legend ) { |
452 | $longest = $len if $len > $longest; |
453 | } |
454 | $longest += 2; |
455 | |
456 | while ( my ( $key, $shape ) = each %legend ) { |
457 | my $space = $longest - length $shape; |
458 | push @shapes, [ |
459 | 'string', $font, $x, $max_y - $font->height - 4, |
460 | join( '', $shape, ' ' x $space, $key ), 'black' |
461 | ]; |
462 | |
463 | $max_y += $font->height + 4; |
464 | } |
465 | } |
466 | |
60dcc980 |
467 | my $sig = 'Created by SQL::Translator ' . $t->version; |
37503827 |
468 | my $sig_len = $font->width * length $sig; |
469 | push @shapes, [ |
470 | 'string', $font, $max_x - $sig_len, $max_y - $font->height - 4, |
471 | $sig, 'black' |
472 | ]; |
473 | |
474 | # |
475 | # Render the image. |
476 | # |
477 | my $gd = GD::Image->new( $max_x + 30, $max_y ); |
7652721a |
478 | unless ( $gd->can( $output_type ) ) { |
479 | die "GD can't create images of type '$output_type'\n"; |
37503827 |
480 | } |
481 | my %colors = map { $_->[0], $gd->colorAllocate( @{$_->[1]} ) } ( |
482 | [ white => [ 255, 255, 255 ] ], |
483 | [ beige => [ 245, 245, 220 ] ], |
484 | [ black => [ 0, 0, 0 ] ], |
485 | [ lightblue => [ 173, 216, 230 ] ], |
486 | [ cadetblue => [ 95, 158, 160 ] ], |
487 | [ lightgoldenrodyellow => [ 250, 250, 210 ] ], |
488 | [ khaki => [ 240, 230, 140 ] ], |
489 | [ red => [ 255, 0, 0 ] ], |
490 | ); |
491 | $gd->interlaced( 'true' ); |
492 | my $background_color = $add_color ? 'lightgoldenrodyellow' : 'white'; |
493 | $gd->fill( 0, 0, $colors{ $background_color } ); |
494 | for my $shape ( @shapes ) { |
495 | my $method = shift @$shape; |
496 | my $color = pop @$shape; |
497 | $gd->$method( @$shape, $colors{ $color } ); |
498 | } |
499 | |
500 | # |
6a20798b |
501 | # Make image map. |
502 | # |
503 | debug("imap file = '$imap_file'"); |
504 | if ( $imap_file && @imap_coords ) { |
505 | open my $fh, ">$imap_file" or die "Can't write '$imap_file': $!\n"; |
506 | print $fh qq[<html><body><img src="" usemap="#imap" border="0">\n]. |
507 | qq[<map name="imap">\n]; |
508 | for my $rec ( @imap_coords ) { |
509 | my $href = shift @$rec; |
510 | print $fh q[<area coords="].join(',', @$rec).qq[" href="$href">\n]; |
511 | } |
512 | print $fh qq[</body></html>]; |
513 | close $fh; |
514 | } |
515 | |
516 | # |
37503827 |
517 | # Print the image. |
518 | # |
519 | if ( $out_file ) { |
520 | open my $fh, ">$out_file" or die "Can't write '$out_file': $!\n"; |
7652721a |
521 | print $fh $gd->$output_type; |
37503827 |
522 | close $fh; |
523 | } |
524 | else { |
7652721a |
525 | return $gd->$output_type; |
37503827 |
526 | } |
527 | } |
528 | |
529 | 1; |
530 | |
977651a5 |
531 | # ------------------------------------------------------------------- |
532 | |
37503827 |
533 | =pod |
534 | |
37503827 |
535 | =head1 AUTHOR |
536 | |
e966b2b0 |
537 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>. |
37503827 |
538 | |
539 | =cut |