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source: tags/arb-6.0/SECEDIT/SEC_graphic.cxx

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Last change on this file was 11143, checked in by westram, 12 years ago
unified names of mode-pixmaps and -helpfiles renamed modes (using separate enum values for distinct modes) sorted modes according to their usage in arb applications
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 28.4 KB

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1	// =============================================================== //
2	// //
3	// File : SEC_graphic.cxx //
4	// Purpose : GUI for structure window //
5	// //
6	// Institute of Microbiology (Technical University Munich) //
7	// http://www.arb-home.de/ //
8	// //
9	// =============================================================== //
10
11	#include "SEC_graphic.hxx"
12	#include "SEC_root.hxx"
13	#include "SEC_iter.hxx"
14	#include "SEC_toggle.hxx"
15
16	#include <ed4_extern.hxx>
17
18	#include <aw_awars.hxx>
19	#include <aw_global.hxx>
20	#include <aw_preset.hxx>
21	#include <aw_msg.hxx>
22	#include <aw_root.hxx>
23	#include <aw_question.hxx>
24	#include <arbdbt.h>
25	#include <ad_cb.h>
26
27	#include <vector>
28
29	using namespace std;
30
31	AW_gc_manager SEC_graphic::init_devices(AW_window aww, AW_device device, AWT_canvas *scr)
32	{
33	AW_gc_manager gc_manager =
34	AW_manage_GC(aww,
35	scr->get_gc_base_name(),
36	device,
37	SEC_GC_LOOP,
38	SEC_GC_MAX,
39	AW_GCM_DATA_AREA,
40	makeWindowCallback(AWT_expose_cb, scr),
41	false,
42	"#A1A1A1",
43	"LOOP$#247900",
44	"HELIX$#085DAB",
45	"NONPAIRING HELIX$#D52B69",
46	"DEFAULT$#000000",
47	"BONDS$#000000",
48	"ECOLI POSITION$#FFE223",
49	"HELIX NUMBERS$#D4D4D4",
50
51	// Color Ranges to paint SAIs
52	"+-RANGE 0$#FFFFFF", "+-RANGE 1$#E0E0E0", "-RANGE 2$#C0C0C0",
53	"+-RANGE 3$#A0A0A0", "+-RANGE 4$#909090", "-RANGE 5$#808080",
54	"+-RANGE 6$#808080", "+-RANGE 7$#505050", "-RANGE 8$#404040",
55	"+-RANGE 9$#303030", "+-CURSOR$#BF1515", "-MISMATCHES$#FF9AFF",
56
57	// colors used to Paint search patterns
58	// (do not change the names of these gcs)
59	"+-User1$#B8E2F8", "+-User2$#B8E2F8", "-Probe$#B8E2F8",
60	"+-Primer(l)$#A9FE54", "+-Primer(r)$#A9FE54", "-Primer(g)$#A9FE54",
61	"+-Sig(l)$#DBB0FF", "+-Sig(r)$#DBB0FF", "-Sig(g)$#DBB0FF",
62
63	// colors used to paint the skeleton of the structure
64	"+-SKELETON HELIX${HELIX}", "+-SKELETON LOOP${LOOP}", "-SKELETON NONHELIX${NONPAIRING HELIX}",
65	NULL);
66
67	return gc_manager;
68	}
69
70	static GB_ERROR change_constraints(SEC_base *elem) {
71	GB_ERROR error = 0;
72
73	GB_CSTR constraint_type = 0;
74	GB_CSTR element_type = 0;
75
76	switch (elem->getType()) {
77	case SEC_HELIX:
78	constraint_type = "length";
79	element_type = "helix";
80	break;
81	case SEC_LOOP:
82	constraint_type = "radius";
83	element_type = "loop";
84	break;
85	default:
86	sec_assert(0);
87	error = "Illegal element type";
88	break;
89	}
90
91	if (!error) {
92	char *question = GBS_global_string_copy("%s-constraints for %s", constraint_type, element_type);
93	char *answer = aw_input(question, GBS_global_string("%.2f-%.2f", elem->minSize(), elem->maxSize()));
94
95	while (answer) {
96	char *end;
97	double low = strtod(answer, &end);
98
99	if (end[0]!='-') {
100	error = "Wrong format! Wanted format is 'lower-upper'";
101	}
102	else {
103	double high = strtod(end+1, 0);
104
105	if (low<0 \|\| high<0 \|\| (low && high && low>high)) {
106	error = "Illegal values";
107	}
108	else {
109	#if defined(DEBUG)
110	sec_assert(!low \|\| !high \|\| low<=high);
111	#endif // DEBUG
112	elem->setConstraints(low, high);
113	break;
114	}
115	}
116
117	sec_assert(error);
118	aw_message(error);
119
120	char *retry = aw_input(question, answer);
121	free(answer);
122
123	answer = retry;
124	}
125
126	free(answer);
127	free(question);
128	}
129	return error;
130	}
131
132
133	GB_ERROR SEC_graphic::handleKey(AW_event_type event, AW_key_mod key_modifier, AW_key_code key_code, char key_char) {
134	GB_ERROR error = 0;
135
136	if (event == AW_Keyboard_Press) {
137	int curpos = sec_root->get_cursor();
138	int maxIndex = sec_root->max_index();
139	bool setCurpos = false;
140	bool handled = false;
141
142	if (key_modifier == AW_KEYMODE_NONE) {
143	bool wrapped = false; // avoid deadlock
144
145	switch (key_code) {
146	case AW_KEY_LEFT: {
147	while (1) {
148	curpos--;
149	if (curpos<0) {
150	curpos = maxIndex;
151	if (wrapped) break;
152	wrapped = true;
153	}
154	if (sec_root->shallDisplayPosition(curpos)) {
155	setCurpos = true;
156	break;
157	}
158	}
159	break;
160	}
161	case AW_KEY_RIGHT: {
162	while (1) {
163	curpos++;
164	if (curpos > maxIndex) {
165	curpos = 0;
166	if (wrapped) break;
167	wrapped = true;
168	}
169	if (sec_root->shallDisplayPosition(curpos)) {
170	setCurpos = true;
171	break;
172	}
173	}
174	break;
175	}
176	case AW_KEY_ASCII: {
177	const char *toggle_awar = 0;
178	int val_max = 1;
179
180	switch (key_char) {
181	case 'b': toggle_awar = AWAR_SECEDIT_SHOW_BONDS; val_max = 2; break;
182	case 'B': toggle_awar = AWAR_SECEDIT_HIDE_BASES; break;
183	case 'k': toggle_awar = AWAR_SECEDIT_SHOW_STR_SKELETON; break;
184
185	case 'c': toggle_awar = AWAR_SECEDIT_SHOW_CURPOS; val_max = 3; break;
186	case 'h': toggle_awar = AWAR_SECEDIT_SHOW_HELIX_NRS; break;
187	case 'e': toggle_awar = AWAR_SECEDIT_SHOW_ECOLI_POS; break;
188
189	case 's': toggle_awar = AWAR_SECEDIT_DISPLAY_SAI; break;
190	case 'r': toggle_awar = AWAR_SECEDIT_DISPLAY_SEARCH; break;
191
192	case 'E': toggle_awar = AWAR_SECEDIT_DISPPOS_ECOLI; break;
193	case 'H': toggle_awar = AWAR_SECEDIT_DISPPOS_BINDING; break;
194
195	#if defined(DEBUG)
196	case 'd': toggle_awar = AWAR_SECEDIT_SHOW_DEBUG; break;
197	#endif // DEBUG
198
199	case 't':
200	error = sec_root->get_db()->structure()->next();
201	handled = true;
202	break;
203	}
204
205	if (toggle_awar) {
206	AW_awar *awar = aw_root->awar(toggle_awar);
207	int val = awar->read_int()+1;
208
209	if (val>val_max) val = 0;
210	awar->write_int(val);
211
212	handled = true;
213	}
214
215	break;
216	}
217	default:
218	break;
219	}
220	}
221
222	if (setCurpos) {
223	aw_root->awar_int(AWAR_SET_CURSOR_POSITION)->write_int(curpos);
224	handled = true;
225	}
226
227	if (!handled) { // pass unhandled key events to EDIT4
228	AW_event faked_event;
229
230	memset((char*)&faked_event, 0, sizeof(faked_event));
231
232	faked_event.type = event;
233	faked_event.keymodifier = key_modifier;
234	faked_event.keycode = key_code;
235	faked_event.character = key_char;
236
237	sec_root->host().forward_event(&faked_event);
238	}
239	}
240
241	return error;
242	}
243
244	GB_ERROR SEC_graphic::handleMouse(AW_device device, AW_event_type event, int button, AWT_COMMAND_MODE cmd, const Position& world, SEC_base elem, int abspos) {
245	GB_ERROR error = 0;
246
247	// ------------------------------------------
248	// handle element dependent actions
249
250	if (elem) {
251	static Position start; // click position on mouse down
252
253	Position fixpoint = elem->get_fixpoint(); // of strand or loop
254
255	SEC_loop *loop = 0;
256	SEC_helix *helix = 0;
257
258	if (elem->getType() == SEC_HELIX) helix = static_cast<SEC_helix*>(elem);
259	else {
260	sec_assert(elem->getType() == SEC_LOOP);
261	loop = static_cast<SEC_loop*>(elem);
262	}
263
264	if (event == AW_Mouse_Press) start = world; // store start position
265
266	switch (cmd) {
267	case AWT_MODE_STRETCH: { // change constraints with mouse
268	static double start_size; // helix/loop size at start click
269
270	switch (event) {
271	case AW_Mouse_Press:
272	if (button == AW_BUTTON_LEFT) {
273	start_size = elem->drawnSize();
274	sec_root->set_show_constraints(elem->getType());
275	exports.refresh = 1;
276	}
277	else { // right button -> reset constraints
278	elem->setConstraints(0, 0);
279	elem->sizeChanged();
280	exports.refresh = 1;
281	exports.save = 1;
282	}
283	break;
284
285	case AW_Mouse_Drag:
286	if (button == AW_BUTTON_LEFT) {
287	double dfix1 = Distance(fixpoint, start);
288	double dfix2 = Distance(fixpoint, world);
289
290	if (dfix1>0 && dfix2>0) {
291	double factor = dfix2/dfix1;
292	double new_size = start_size*factor;
293
294	elem->setDrawnSize(new_size);
295	elem->sizeChanged();
296
297	exports.refresh = 1;
298	}
299	}
300	break;
301
302	case AW_Mouse_Release:
303	sec_root->set_show_constraints(SEC_ANY_TYPE);
304	exports.save = 1;
305	break;
306
307	default: sec_assert(0); break;
308	}
309	break;
310	}
311	case AWT_MODE_EDIT: // edit constraints
312	if (button==AW_BUTTON_LEFT && event==AW_Mouse_Press) {
313	error = change_constraints(elem);
314	if (!error) {
315	elem->sizeChanged();
316	exports.save = 1;
317	}
318	}
319	break;
320
321	case AWT_MODE_ROTATE: { // rotate branches/loops
322	if (event == AW_Mouse_Release) {
323	exports.save = 1;
324	}
325	else {
326	static Angle startClick; // angle between fixpoint (of loop or helix) and first-click
327	static bool rotateSubStructure; // whether to rotate the substructure below
328	static vector<Angle> old; // old angles
329
330	if (loop && loop->is_root_loop()) fixpoint = loop->get_center();
331
332	Angle fix2world(fixpoint, world);
333
334	if (event == AW_Mouse_Press) {
335	startClick = fix2world;
336	old.clear();
337	rotateSubStructure = (button == AW_BUTTON_LEFT);
338
339	if (loop) {
340	old.push_back(loop->get_abs_angle());
341	if (!rotateSubStructure) {
342	for (SEC_strand_iterator strand(loop); strand; ++strand) {
343	if (strand->isRootsideFixpoint()) {
344	old.push_back(strand->get_helix()->get_abs_angle());
345	}
346	}
347	}
348	}
349	else {
350	old.push_back(helix->get_abs_angle());
351	old.push_back(helix->outsideLoop()->get_abs_angle());
352	}
353	}
354	else {
355	sec_assert(event == AW_Mouse_Drag);
356	Angle diff = fix2world-startClick;
357
358	if (loop) {
359	loop->set_abs_angle(old[0]+diff);
360	if (!rotateSubStructure) {
361	int idx = 1;
362	for (SEC_strand_iterator strand(loop); strand; ++strand) {
363	if (strand->isRootsideFixpoint()) {
364	strand->get_helix()->set_abs_angle(old[idx++]);
365	}
366	}
367	}
368	}
369	else {
370	helix->set_abs_angle(old[0]+diff);
371	if (!rotateSubStructure) helix->outsideLoop()->set_abs_angle(old[1]);
372	}
373
374	exports.refresh = 1;
375	elem->orientationChanged();
376	}
377	}
378	break;
379	}
380
381	case AWT_MODE_SETROOT: // set-root-mode / reset angles
382	if (event == AW_Mouse_Press) {
383	if (button == AW_BUTTON_LEFT) { // set root
384	if (loop) {
385	sec_root->set_root(loop);
386	exports.save = 1;
387	}
388	else error = "Please click on a loop to change the root";
389	}
390	else { // reset angles
391	sec_assert(button == AW_BUTTON_RIGHT);
392	elem->reset_angles();
393	elem->orientationChanged();
394	exports.save = 1;
395	}
396	}
397	break;
398
399	case AWT_MODE_FOLD: { // fold/unfold helix
400	if (event == AW_Mouse_Press) {
401	if (button == AW_BUTTON_LEFT) { // fold helix
402	if (loop) {
403	const char *helix_nr = sec_root->helixNrAt(abspos);
404	if (helix_nr) {
405	const size_t *p = sec_root->getHelixPositions(helix_nr);
406	error = sec_root->split_loop(p[0], p[1]+1, p[2], p[3]+1);
407
408	if (!error) {
409	sec_root->nail_position(abspos);
410	exports.save = 1;
411	}
412	}
413	else {
414	error = GBS_global_string("No helix to fold at position %i", abspos);
415	}
416	}
417	else {
418	error = "Click on a loop region to fold a helix";
419	}
420	}
421	else { // unfold helix
422	sec_assert(button == AW_BUTTON_RIGHT);
423	if (helix) {
424	error = sec_root->unsplit_loop(helix->strandToRoot());
425	if (!error) {
426	sec_root->nail_position(abspos);
427	exports.save = 1;
428	}
429	}
430	else {
431	error = "Right click on a helix to remove it";
432	}
433	}
434	}
435	break;
436	}
437	case AWT_MODE_CURSOR:
438	case AWT_MODE_PINFO:
439	elem = 0; // handle element-independent
440	break;
441	default: sec_assert(0); break;
442	}
443	}
444
445	// ---------------------------------------
446	// action independent of element
447
448	if (!elem) {
449	switch (cmd) {
450	case AWT_MODE_CURSOR: // set cursor in ARB_EDIT4
451	if (event == AW_Mouse_Press) {
452	if (abspos >= 0 && size_t(abspos) < sec_root->max_index()) {
453	// sequence position in AWAR_SET_CURSOR_POSITION is starting with 0!
454	aw_root->awar_int(AWAR_SET_CURSOR_POSITION)->write_int(abspos);
455	}
456	}
457	break;
458
459	case AWT_MODE_PINFO: // display search pattern
460	if (event == AW_Mouse_Press) {
461	if (button == AW_BUTTON_LEFT) {
462	if (abspos >= 0 && size_t(abspos) < sec_root->max_index()) {
463	sec_root->paintSearchPatternStrings(device, abspos, world.xpos()+1, world.ypos());
464	}
465	// don't refresh here!
466	}
467	else {
468	sec_assert(button == AW_BUTTON_RIGHT);
469	exports.refresh = 1; // simply refresh to remove drawn patterns
470	}
471	}
472	break;
473
474	default:
475	break;
476	}
477	return 0; // no error
478	}
479
480	if (exports.save == 1) exports.refresh = 1;
481	return error;
482	}
483
484	void SEC_graphic::handle_command(AW_device *device, AWT_graphic_event& event) {
485	if (event.cmd() != AWT_MODE_EDIT && event.cmd() != AWT_MODE_STRETCH) sec_root->set_show_constraints(SEC_NO_TYPE);
486
487	GB_ERROR error = 0;
488	if (event.type() == AW_Keyboard_Press \|\| event.type() == AW_Keyboard_Release) {
489	error = handleKey(event.type(), event.key_modifier(), event.key_code(), event.key_char());
490	}
491	else {
492	if (event.button() != AW_BUTTON_MIDDLE && event.cmd() != AWT_MODE_ZOOM) { // don't handle scroll + zoom
493	const AW_clicked_element *clicked = event.best_click();
494	if (clicked) {
495	SEC_base elem = reinterpret_cast<SEC_base>(clicked->cd1());
496	int abspos = clicked->cd2();
497
498	Position world = device->rtransform(event.position());
499	error = handleMouse(device, event.type(), event.button(), event.cmd(), world, elem, abspos);
500	}
501	}
502	}
503
504	if (error) aw_message(error);
505	}
506
507	SEC_graphic::SEC_graphic(AW_root aw_rooti, GBDATA gb_maini)
508	: update_requested(SEC_UPDATE_RELOAD),
509	load_error(0),
510	disp_device(0),
511	gb_main(gb_maini),
512	aw_root(aw_rooti),
513	sec_root(new SEC_root),
514	gb_struct(0),
515	gb_struct_ref(0),
516	last_saved(0)
517	{
518	exports.set_standard_default_padding();
519	}
520
521	SEC_graphic::~SEC_graphic() {
522	delete sec_root;
523	delete load_error;
524	}
525
526	static void SEC_structure_changed_cb(GBDATA gb_seq, SEC_graphic gfx, GB_CB_TYPE type) {
527	if (type == GB_CB_DELETE) {
528	gfx->gb_struct = NULL;
529	gfx->gb_struct_ref = NULL;
530
531	gfx->request_update(SEC_UPDATE_RELOAD);
532	}
533	else if (GB_read_clock(gb_seq) > gfx->last_saved) { // not changed by secedit self
534	gfx->request_update(SEC_UPDATE_RELOAD);
535	}
536	}
537
538	GB_ERROR SEC_graphic::load(GBDATA , const char , AW_CL, AW_CL) {
539	//! (Re-)Load secondary structure from database
540
541	sec_assert(sec_root->get_db()->canDisplay()); // need a sequence loaded (to fix bugs in versions < 3)
542	sec_root->nail_cursor();
543
544	GB_transaction ta(gb_main);
545	// first check timestamp, do not load structure that we have saved !!!!
546	if (gb_struct) {
547	if (GB_read_clock(gb_struct) <= last_saved) return NULL;
548	}
549
550	// Reset structure:
551	if (gb_struct) {
552	GB_remove_callback(gb_struct, GB_CB_ALL, makeDatabaseCallback(SEC_structure_changed_cb, this)); gb_struct = NULL;
553	GB_remove_callback(gb_struct_ref, GB_CB_ALL, makeDatabaseCallback(SEC_structure_changed_cb, this)); gb_struct_ref = NULL;
554	}
555
556	request_update(SEC_UPDATE_RECOUNT);
557
558	if (gb_struct) {
559	this->last_saved = GB_read_clock(gb_struct); // mark as loaded
560	}
561
562
563
564	// Setup new structure:
565	GB_ERROR err = 0;
566	GBDATA *gb_ali = 0;
567	{
568	char *helix_name = GBT_get_default_helix(gb_main);
569	char *name = GBT_readOrCreate_string(gb_main, AWAR_HELIX_NAME, helix_name);
570	sec_assert(name);
571
572	GBDATA *gb_species = GBT_find_SAI(gb_main, name);
573	if (!gb_species) {
574	err = GB_export_errorf("Cannot find helix template SAI '%s'", name);
575	}
576	else {
577	char *ali_name = GBT_get_default_alignment(gb_main);
578	long ali_len = GBT_get_alignment_len(gb_main, ali_name);
579
580	if (ali_len < 10) {
581	err = GB_export_errorf("alignment '%s' to short to generate helix", ali_name);
582	}
583	else {
584	gb_ali = GB_search(gb_species, ali_name, GB_FIND);
585	if (!gb_ali) {
586	err = GB_export_errorf("Your helix structure template '%s' has no valid sequence for alignment '%s'", name, ali_name); // no sequence for name in the database !!!
587	}
588	}
589	free(ali_name);
590	}
591
592	free(name);
593	free(helix_name);
594	}
595
596	// ------------------------
597	// read structure
598
599	if (!err) {
600	gb_struct = GB_search(gb_ali, NAME_OF_STRUCT_SEQ, GB_FIND);
601
602	if (gb_struct) {
603	gb_struct_ref = GB_search(gb_ali, NAME_OF_REF_SEQ, GB_STRING);
604
605	char *strct = GB_read_string(gb_struct);
606	char *ref = GB_read_string(gb_struct_ref);
607	err = sec_root->read_data(strct, ref);
608	if (err) {
609	err = GBS_global_string("Defect structure in DB (read-error: '%s')", err);
610	}
611	#if defined(CHECK_INTEGRITY)
612	else {
613	sec_root->check_integrity(CHECK_STRUCTURE);
614	}
615	#endif // CHECK_INTEGRITY
616
617	free(strct);
618	free(ref);
619
620	// on first load init structure toggler:
621	if (!err) {
622	sec_root->get_db()->init_toggler();
623	}
624	}
625	else {
626	err = "no secondary structure was found in your database";
627	}
628
629	if (err) {
630	request_update(SEC_UPDATE_ZOOM_RESET);
631	}
632	else {
633	// in the past one additional NAME_OF_STRUCT_SEQ-entry was added everytime the default bone was created
634	// Fix: delete additional entries
635
636	GBDATA *gb_add = gb_struct;
637	do {
638	sec_assert(GB_has_key(gb_add, NAME_OF_STRUCT_SEQ));
639	gb_add = GB_nextEntry(gb_add);
640	if (gb_add) {
641	err = GB_delete(gb_add);
642	printf("* Deleting duplicated entry '%s' (%p)\n", NAME_OF_STRUCT_SEQ, gb_add);
643	}
644	}
645	while (gb_add && !err);
646	}
647	}
648
649	if (!err) {
650	last_saved = GB_read_clock(gb_struct); // mark as loaded
651	request_update(SEC_UPDATE_RECOUNT);
652	if (load_error) { // previous load error?
653	freenull(load_error);
654	request_update(SEC_UPDATE_ZOOM_RESET);
655	}
656	}
657	else {
658	load_error = strdup(err);
659	request_update(SEC_UPDATE_ZOOM_RESET);
660	}
661
662	// set structure-change-callbacks:
663	if(gb_struct) GB_add_callback(gb_struct, GB_CB_ALL, makeDatabaseCallback(SEC_structure_changed_cb, this));
664	if(gb_struct_ref) GB_add_callback(gb_struct_ref, GB_CB_ALL, makeDatabaseCallback(SEC_structure_changed_cb, this));
665
666	return err;
667	}
668
669	GB_ERROR SEC_graphic::save(GBDATA , const char , AW_CL, AW_CL) {
670	//! Save secondary structure to database
671
672	if (!gb_struct) return 0; // not loaded, so don't save
673	if (!sec_root) return 0;
674
675	char *data = sec_root->buildStructureString();
676	GB_transaction ta(gb_main);
677	GB_ERROR error = GB_write_string(gb_struct, data);
678	if (!error) {
679	const XString& xstr = sec_root->get_xString();
680	const char *x_string = xstr.get_x_string();
681
682	error = GB_write_string(gb_struct_ref, x_string);
683
684	if (!error && xstr.alignment_too_short()) {
685	aw_message("Your helix needs one gap at end. Please format your alignment!");
686	}
687	}
688	this->last_saved = GB_read_clock(gb_struct);
689	if (error) {
690	error = ta.close(error);
691	aw_message(error);
692	}
693	return NULL;
694	}
695
696	GB_ERROR SEC_graphic::read_data_from_db(char data, char x_string) const {
697	GB_ERROR error = 0;
698
699	sec_assert(gb_struct && gb_struct_ref);
700	*data = GB_read_string(gb_struct);
701	if (!*data) error = GB_await_error();
702	else {
703	*x_string = GB_read_string(gb_struct_ref);
704	if (!*x_string) error = GB_await_error();
705	}
706	return error;
707	}
708
709	GB_ERROR SEC_graphic::write_data_to_db(const char data, const char x_string) const {
710	if (!gb_struct) return 0;
711	if (!sec_root) return 0;
712
713	GB_transaction ta(gb_main);
714	GB_ERROR error = GB_write_string(gb_struct, data);
715	if (!error) {
716	error = GB_write_string(gb_struct_ref, x_string);
717	}
718	last_saved = 0; // force reload of data
719	return ta.close(error);
720	}
721
722	int SEC_graphic::check_update(GBDATA *) {
723	GB_transaction ta(gb_main);
724
725	const SEC_db_interface *db = sec_root->get_db();
726
727	if (db && db->canDisplay()) {
728	if (update_requested & SEC_UPDATE_RELOAD) {
729	GB_ERROR error = load(0, 0, 0, 0); // sets change_flag
730	if (error) {
731	error = ta.close(error);
732	aw_message(error);
733	}
734
735	update_requested = static_cast<SEC_update_request>((update_requested^SEC_UPDATE_RELOAD)\|SEC_UPDATE_RECOUNT); // clear reload flag
736	exports.refresh = 1;
737	}
738
739	if (update_requested & SEC_UPDATE_SHOWN_POSITIONS) {
740	sec_root->update_shown_positions();
741	update_requested = static_cast<SEC_update_request>((update_requested^SEC_UPDATE_SHOWN_POSITIONS)\|SEC_UPDATE_RECOUNT); // clear reload flag
742	exports.refresh = 1;
743	}
744
745	if (update_requested & SEC_UPDATE_RECOUNT) {
746	sec_root->invalidate_base_positions();
747	sec_root->relayout();
748
749	update_requested = static_cast<SEC_update_request>(update_requested^SEC_UPDATE_RECOUNT); // clear recount flag
750	exports.refresh = 1;
751	}
752
753	sec_root->perform_autoscroll();
754	}
755
756	int res = 0;
757	if (update_requested & SEC_UPDATE_ZOOM_RESET) {
758	res = 1; // report zoom reset
759	update_requested = static_cast<SEC_update_request>(update_requested^SEC_UPDATE_ZOOM_RESET); // clear zoom reset flag
760	}
761	return res;
762	}
763
764	void SEC_graphic::update(GBDATA *) {
765	}
766
767	void SEC_graphic::show(AW_device *device) {
768	const char *textToDisplay = 0;
769
770	sec_assert(sec_root);
771	sec_root->clear_last_drawed_cursor_position();
772
773	if (sec_root->canDisplay()) {
774	if (sec_root->get_root_loop()) {
775	GB_ERROR paint_error = sec_root->paint(device);
776	if (paint_error) textToDisplay = GBS_global_string("Error: %s", paint_error);
777	}
778	else {
779	if (load_error) textToDisplay = GBS_global_string("Load error: %s", load_error);
780	else textToDisplay = "No structure loaded (yet)";
781	}
782	}
783	else {
784	const SEC_db_interface *db = sec_root->get_db();
785
786	if (!db) textToDisplay = "Not connected to database";
787	else if (!db->helix()) textToDisplay = "No helix info";
788	else textToDisplay = "No species selected";
789	}
790
791	if (textToDisplay) { // no structure
792	sec_assert(strchr(textToDisplay, '\n') == 0); // linefeeds do not work here
793	device->text(SEC_GC_ECOLI, textToDisplay, 0, 0, 0, AW_SCREEN, 0);
794	sec_root->set_last_drawed_cursor_position(LineVector(Origin, ZeroVector));
795	}
796	}
797
798	void SEC_graphic::info(AW_device /device/, AW_pos /x/, AW_pos /y/, AW_clicked_line /cl/, AW_clicked_text /ct*/) {
799	aw_message("INFO MESSAGE");
800	}
801
802

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