summaryrefslogtreecommitdiff
path: root/src/guiTable.cpp
blob: e915770a412da09dec79233c745cfde581b1ad45 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/


#include "guiTable.h"
#include <queue>
#include <sstream>
#include <utility>
#include <string.h>
#include <IGUISkin.h>
#include <IGUIFont.h>
#include <IGUIScrollBar.h>
#include "debug.h"
#include "log.h"
#include "client/tile.h"
#include "gettime.h"
#include "util/string.h"
#include "util/numeric.h"
#include "util/string.h" // for parseColorString()
#include "settings.h" // for settings
#include "porting.h" // for dpi
#include "guiscalingfilter.h"

/*
	GUITable
*/

GUITable::GUITable(gui::IGUIEnvironment *env,
		gui::IGUIElement* parent, s32 id,
		core::rect<s32> rectangle,
		ISimpleTextureSource *tsrc
):
	gui::IGUIElement(gui::EGUIET_ELEMENT, env, parent, id, rectangle),
	m_tsrc(tsrc),
	m_is_textlist(false),
	m_has_tree_column(false),
	m_selected(-1),
	m_sel_column(0),
	m_sel_doubleclick(false),
	m_keynav_time(0),
	m_keynav_buffer(L""),
	m_border(true),
	m_color(255, 255, 255, 255),
	m_background(255, 0, 0, 0),
	m_highlight(255, 70, 100, 50),
	m_highlight_text(255, 255, 255, 255),
	m_rowheight(1),
	m_font(NULL),
	m_scrollbar(NULL)
{
	assert(tsrc != NULL);

	gui::IGUISkin* skin = Environment->getSkin();

	m_font = skin->getFont();
	if (m_font) {
		m_font->grab();
		m_rowheight = m_font->getDimension(L"A").Height + 4;
		m_rowheight = MYMAX(m_rowheight, 1);
	}

	const s32 s = skin->getSize(gui::EGDS_SCROLLBAR_SIZE);
	m_scrollbar = Environment->addScrollBar(false,
			core::rect<s32>(RelativeRect.getWidth() - s,
					0,
					RelativeRect.getWidth(),
					RelativeRect.getHeight()),
			this, -1);
	m_scrollbar->setSubElement(true);
	m_scrollbar->setTabStop(false);
	m_scrollbar->setAlignment(gui::EGUIA_LOWERRIGHT, gui::EGUIA_LOWERRIGHT,
			gui::EGUIA_UPPERLEFT, gui::EGUIA_LOWERRIGHT);
	m_scrollbar->setVisible(false);
	m_scrollbar->setPos(0);

	setTabStop(true);
	setTabOrder(-1);
	updateAbsolutePosition();

	core::rect<s32> relative_rect = m_scrollbar->getRelativePosition();
	s32 width = (relative_rect.getWidth()/(2.0/3.0)) * porting::getDisplayDensity() *
			g_settings->getFloat("gui_scaling");
	m_scrollbar->setRelativePosition(core::rect<s32>(
			relative_rect.LowerRightCorner.X-width,relative_rect.UpperLeftCorner.Y,
			relative_rect.LowerRightCorner.X,relative_rect.LowerRightCorner.Y
			));
}

GUITable::~GUITable()
{
	for (size_t i = 0; i < m_rows.size(); ++i)
		delete[] m_rows[i].cells;

	if (m_font)
		m_font->drop();
	
	m_scrollbar->remove();
}

GUITable::Option GUITable::splitOption(const std::string &str)
{
	size_t equal_pos = str.find('=');
	if (equal_pos == std::string::npos)
		return GUITable::Option(str, "");
	else
		return GUITable::Option(str.substr(0, equal_pos),
				str.substr(equal_pos + 1));
}

void GUITable::setTextList(const std::vector<std::string> &content,
		bool transparent)
{
	clear();

	if (transparent) {
		m_background.setAlpha(0);
		m_border = false;
	}

	m_is_textlist = true;

	s32 empty_string_index = allocString("");

	m_rows.resize(content.size());
	for (s32 i = 0; i < (s32) content.size(); ++i) {
		Row *row = &m_rows[i];
		row->cells = new Cell[1];
		row->cellcount = 1;
		row->indent = 0;
		row->visible_index = i;
		m_visible_rows.push_back(i);

		Cell *cell = row->cells;
		cell->xmin = 0;
		cell->xmax = 0x7fff;  // something large enough
		cell->xpos = 6;
		cell->content_type = COLUMN_TYPE_TEXT;
		cell->content_index = empty_string_index;
		cell->tooltip_index = empty_string_index;
		cell->color.set(255, 255, 255, 255);
		cell->color_defined = false;
		cell->reported_column = 1;

		// parse row content (color)
		const std::string &s = content[i];
		if (s[0] == '#' && s[1] == '#') {
			// double # to escape
			cell->content_index = allocString(s.substr(2));
		}
		else if (s[0] == '#' && s.size() >= 7 &&
				parseColorString(
					s.substr(0,7), cell->color, false)) {
			// single # for color
			cell->color_defined = true;
			cell->content_index = allocString(s.substr(7));
		}
		else {
			// no #, just text
			cell->content_index = allocString(s);
		}

	}

	allocationComplete();

	// Clamp scroll bar position
	updateScrollBar();
}

void GUITable::setTable(const TableOptions &options,
		const TableColumns &columns,
		std::vector<std::string> &content)
{
	clear();

	// Naming conventions:
	// i is always a row index, 0-based
	// j is always a column index, 0-based
	// k is another index, for example an option index

	// Handle a stupid error case... (issue #1187)
	if (columns.empty()) {
		TableColumn text_column;
		text_column.type = "text";
		TableColumns new_columns;
		new_columns.push_back(text_column);
		setTable(options, new_columns, content);
		return;
	}

	// Handle table options
	video::SColor default_color(255, 255, 255, 255);
	s32 opendepth = 0;
	for (size_t k = 0; k < options.size(); ++k) {
		const std::string &name = options[k].name;
		const std::string &value = options[k].value;
		if (name == "color")
			parseColorString(value, m_color, false);
		else if (name == "background")
			parseColorString(value, m_background, false);
		else if (name == "border")
			m_border = is_yes(value);
		else if (name == "highlight")
			parseColorString(value, m_highlight, false);
		else if (name == "highlight_text")
			parseColorString(value, m_highlight_text, false);
		else if (name == "opendepth")
			opendepth = stoi(value);
		else
			errorstream<<"Invalid table option: \""<<name<<"\""
				<<" (value=\""<<value<<"\")"<<std::endl;
	}

	// Get number of columns and rows
	// note: error case columns.size() == 0 was handled above
	s32 colcount = columns.size();
	assert(colcount >= 1);
	// rowcount = ceil(cellcount / colcount) but use integer arithmetic
	s32 rowcount = (content.size() + colcount - 1) / colcount;
	assert(rowcount >= 0);
	// Append empty strings to content if there is an incomplete row
	s32 cellcount = rowcount * colcount;
	while (content.size() < (u32) cellcount)
		content.push_back("");

	// Create temporary rows (for processing columns)
	struct TempRow {
		// Current horizontal position (may different between rows due
		// to indent/tree columns, or text/image columns with width<0)
		s32 x;
		// Tree indentation level
		s32 indent;
		// Next cell: Index into m_strings or m_images
		s32 content_index;
		// Next cell: Width in pixels
		s32 content_width;
		// Vector of completed cells in this row
		std::vector<Cell> cells;
		// Stores colors and how long they last (maximum column index)
		std::vector<std::pair<video::SColor, s32> > colors;

		TempRow(): x(0), indent(0), content_index(0), content_width(0) {}
	};
	TempRow *rows = new TempRow[rowcount];

	// Get em width. Pedantically speaking, the width of "M" is not
	// necessarily the same as the em width, but whatever, close enough.
	s32 em = 6;
	if (m_font)
		em = m_font->getDimension(L"M").Width;

	s32 default_tooltip_index = allocString("");

	std::map<s32, s32> active_image_indices;

	// Process content in column-major order
	for (s32 j = 0; j < colcount; ++j) {
		// Check column type
		ColumnType columntype = COLUMN_TYPE_TEXT;
		if (columns[j].type == "text")
			columntype = COLUMN_TYPE_TEXT;
		else if (columns[j].type == "image")
			columntype = COLUMN_TYPE_IMAGE;
		else if (columns[j].type == "color")
			columntype = COLUMN_TYPE_COLOR;
		else if (columns[j].type == "indent")
			columntype = COLUMN_TYPE_INDENT;
		else if (columns[j].type == "tree")
			columntype = COLUMN_TYPE_TREE;
		else
			errorstream<<"Invalid table column type: \""
				<<columns[j].type<<"\""<<std::endl;

		// Process column options
		s32 padding = myround(0.5 * em);
		s32 tooltip_index = default_tooltip_index;
		s32 align = 0;
		s32 width = 0;
		s32 span = colcount;

		if (columntype == COLUMN_TYPE_INDENT) {
			padding = 0; // default indent padding
		}
		if (columntype == COLUMN_TYPE_INDENT ||
				columntype == COLUMN_TYPE_TREE) {
			width = myround(em * 1.5); // default indent width
		}

		for (size_t k = 0; k < columns[j].options.size(); ++k) {
			const std::string &name = columns[j].options[k].name;
			const std::string &value = columns[j].options[k].value;
			if (name == "padding")
				padding = myround(stof(value) * em);
			else if (name == "tooltip")
				tooltip_index = allocString(value);
			else if (name == "align" && value == "left")
				align = 0;
			else if (name == "align" && value == "center")
				align = 1;
			else if (name == "align" && value == "right")
				align = 2;
			else if (name == "align" && value == "inline")
				align = 3;
			else if (name == "width")
				width = myround(stof(value) * em);
			else if (name == "span" && columntype == COLUMN_TYPE_COLOR)
				span = stoi(value);
			else if (columntype == COLUMN_TYPE_IMAGE &&
					!name.empty() &&
					string_allowed(name, "0123456789")) {
				s32 content_index = allocImage(value);
				active_image_indices.insert(std::make_pair(
							stoi(name),
							content_index));
			}
			else {
				errorstream<<"Invalid table column option: \""<<name<<"\""
					<<" (value=\""<<value<<"\")"<<std::endl;
			}
		}

		// If current column type can use information from "color" columns,
		// find out which of those is currently active
		if (columntype == COLUMN_TYPE_TEXT) {
			for (s32 i = 0; i < rowcount; ++i) {
				TempRow *row = &rows[i];
				while (!row->colors.empty() && row->colors.back().second < j)
					row->colors.pop_back();
			}
		}

		// Make template for new cells
		Cell newcell;
		memset(&newcell, 0, sizeof newcell);
		newcell.content_type = columntype;
		newcell.tooltip_index = tooltip_index;
		newcell.reported_column = j+1;

		if (columntype == COLUMN_TYPE_TEXT) {
			// Find right edge of column
			s32 xmax = 0;
			for (s32 i = 0; i < rowcount; ++i) {
				TempRow *row = &rows[i];
				row->content_index = allocString(content[i * colcount + j]);
				const core::stringw &text = m_strings[row->content_index];
				row->content_width = m_font ?
					m_font->getDimension(text.c_str()).Width : 0;
				row->content_width = MYMAX(row->content_width, width);
				s32 row_xmax = row->x + padding + row->content_width;
				xmax = MYMAX(xmax, row_xmax);
			}
			// Add a new cell (of text type) to each row
			for (s32 i = 0; i < rowcount; ++i) {
				newcell.xmin = rows[i].x + padding;
				alignContent(&newcell, xmax, rows[i].content_width, align);
				newcell.content_index = rows[i].content_index;
				newcell.color_defined = !rows[i].colors.empty();
				if (newcell.color_defined)
					newcell.color = rows[i].colors.back().first;
				rows[i].cells.push_back(newcell);
				rows[i].x = newcell.xmax;
			}
		}
		else if (columntype == COLUMN_TYPE_IMAGE) {
			// Find right edge of column
			s32 xmax = 0;
			for (s32 i = 0; i < rowcount; ++i) {
				TempRow *row = &rows[i];
				row->content_index = -1;

				// Find content_index. Image indices are defined in
				// column options so check active_image_indices.
				s32 image_index = stoi(content[i * colcount + j]);
				std::map<s32, s32>::iterator image_iter =
					active_image_indices.find(image_index);
				if (image_iter != active_image_indices.end())
					row->content_index = image_iter->second;

				// Get texture object (might be NULL)
				video::ITexture *image = NULL;
				if (row->content_index >= 0)
					image = m_images[row->content_index];

				// Get content width and update xmax
				row->content_width = image ? image->getOriginalSize().Width : 0;
				row->content_width = MYMAX(row->content_width, width);
				s32 row_xmax = row->x + padding + row->content_width;
				xmax = MYMAX(xmax, row_xmax);
			}
			// Add a new cell (of image type) to each row
			for (s32 i = 0; i < rowcount; ++i) {
				newcell.xmin = rows[i].x + padding;
				alignContent(&newcell, xmax, rows[i].content_width, align);
				newcell.content_index = rows[i].content_index;
				rows[i].cells.push_back(newcell);
				rows[i].x = newcell.xmax;
			}
			active_image_indices.clear();
		}
		else if (columntype == COLUMN_TYPE_COLOR) {
			for (s32 i = 0; i < rowcount; ++i) {
				video::SColor cellcolor(255, 255, 255, 255);
				if (parseColorString(content[i * colcount + j], cellcolor, true))
					rows[i].colors.push_back(std::make_pair(cellcolor, j+span));
			}
		}
		else if (columntype == COLUMN_TYPE_INDENT ||
				columntype == COLUMN_TYPE_TREE) {
			// For column type "tree", reserve additional space for +/-
			// Also enable special processing for treeview-type tables
			s32 content_width = 0;
			if (columntype == COLUMN_TYPE_TREE) {
				content_width = m_font ? m_font->getDimension(L"+").Width : 0;
				m_has_tree_column = true;
			}
			// Add a new cell (of indent or tree type) to each row
			for (s32 i = 0; i < rowcount; ++i) {
				TempRow *row = &rows[i];

				s32 indentlevel = stoi(content[i * colcount + j]);
				indentlevel = MYMAX(indentlevel, 0);
				if (columntype == COLUMN_TYPE_TREE)
					row->indent = indentlevel;

				newcell.xmin = row->x + padding;
				newcell.xpos = newcell.xmin + indentlevel * width;
				newcell.xmax = newcell.xpos + content_width;
				newcell.content_index = 0;
				newcell.color_defined = !rows[i].colors.empty();
				if (newcell.color_defined)
					newcell.color = rows[i].colors.back().first;
				row->cells.push_back(newcell);
				row->x = newcell.xmax;
			}
		}
	}

	// Copy temporary rows to not so temporary rows
	if (rowcount >= 1) {
		m_rows.resize(rowcount);
		for (s32 i = 0; i < rowcount; ++i) {
			Row *row = &m_rows[i];
			row->cellcount = rows[i].cells.size();
			row->cells = new Cell[row->cellcount];
			memcpy((void*) row->cells, (void*) &rows[i].cells[0],
					row->cellcount * sizeof(Cell));
			row->indent = rows[i].indent;
			row->visible_index = i;
			m_visible_rows.push_back(i);
		}
	}

	if (m_has_tree_column) {
		// Treeview: convert tree to indent cells on leaf rows
		for (s32 i = 0; i < rowcount; ++i) {
			if (i == rowcount-1 || m_rows[i].indent >= m_rows[i+1].indent)
				for (s32 j = 0; j < m_rows[i].cellcount; ++j)
					if (m_rows[i].cells[j].content_type == COLUMN_TYPE_TREE)
						m_rows[i].cells[j].content_type = COLUMN_TYPE_INDENT;
		}

		// Treeview: close rows according to opendepth option
		std::set<s32> opened_trees;
		for (s32 i = 0; i < rowcount; ++i)
			if (m_rows[i].indent < opendepth)
				opened_trees.insert(i);
		setOpenedTrees(opened_trees);
	}

	// Delete temporary information used only during setTable()
	delete[] rows;
	allocationComplete();

	// Clamp scroll bar position
	updateScrollBar();
}

void GUITable::clear()
{
	// Clean up cells and rows
	for (size_t i = 0; i < m_rows.size(); ++i)
		delete[] m_rows[i].cells;
	m_rows.clear();
	m_visible_rows.clear();

	// Get colors from skin
	gui::IGUISkin *skin = Environment->getSkin();
	m_color          = skin->getColor(gui::EGDC_BUTTON_TEXT);
	m_background     = skin->getColor(gui::EGDC_3D_HIGH_LIGHT);
	m_highlight      = skin->getColor(gui::EGDC_HIGH_LIGHT);
	m_highlight_text = skin->getColor(gui::EGDC_HIGH_LIGHT_TEXT);

	// Reset members
	m_is_textlist = false;
	m_has_tree_column = false;
	m_selected = -1;
	m_sel_column = 0;
	m_sel_doubleclick = false;
	m_keynav_time = 0;
	m_keynav_buffer = L"";
	m_border = true;
	m_strings.clear();
	m_images.clear();
	m_alloc_strings.clear();
	m_alloc_images.clear();
}

std::string GUITable::checkEvent()
{
	s32 sel = getSelected();
	assert(sel >= 0);

	if (sel == 0) {
		return "INV";
	}

	std::ostringstream os(std::ios::binary);
	if (m_sel_doubleclick) {
		os<<"DCL:";
		m_sel_doubleclick = false;
	}
	else {
		os<<"CHG:";
	}
	os<<sel;
	if (!m_is_textlist) {
		os<<":"<<m_sel_column;
	}
	return os.str();
}

s32 GUITable::getSelected() const
{
	if (m_selected < 0)
		return 0;

	assert(m_selected >= 0 && m_selected < (s32) m_visible_rows.size());
	return m_visible_rows[m_selected] + 1;
}

void GUITable::setSelected(s32 index)
{
	m_selected = -1;
	m_sel_column = 0;
	m_sel_doubleclick = false;

	--index;

	s32 rowcount = m_rows.size();

	if (index >= rowcount)
		index = rowcount - 1;
	while (index >= 0 && m_rows[index].visible_index < 0)
		--index;
	if (index >= 0) {
		m_selected = m_rows[index].visible_index;
		assert(m_selected >= 0 && m_selected < (s32) m_visible_rows.size());
	}

	autoScroll();
}

GUITable::DynamicData GUITable::getDynamicData() const
{
	DynamicData dyndata;
	dyndata.selected = getSelected();
	dyndata.scrollpos = m_scrollbar->getPos();
	dyndata.keynav_time = m_keynav_time;
	dyndata.keynav_buffer = m_keynav_buffer;
	if (m_has_tree_column)
		getOpenedTrees(dyndata.opened_trees);
	return dyndata;
}

void GUITable::setDynamicData(const DynamicData &dyndata)
{
	if (m_has_tree_column)
		setOpenedTrees(dyndata.opened_trees);

	m_keynav_time = dyndata.keynav_time;
	m_keynav_buffer = dyndata.keynav_buffer;

	m_scrollbar->setPos(dyndata.scrollpos);

	setSelected(dyndata.selected);
	m_sel_column = 0;
	m_sel_doubleclick = false;
}

const c8* GUITable::getTypeName() const
{
	return "GUITable";
}

void GUITable::updateAbsolutePosition()
{
	IGUIElement::updateAbsolutePosition();
	updateScrollBar();
}

void GUITable::draw()
{
	if (!IsVisible)
		return;

	gui::IGUISkin *skin = Environment->getSkin();

	// draw background

	bool draw_background = m_background.getAlpha() > 0;
	if (m_border)
		skin->draw3DSunkenPane(this, m_background,
				true, draw_background,
				AbsoluteRect, &AbsoluteClippingRect);
	else if (draw_background)
		skin->draw2DRectangle(this, m_background,
				AbsoluteRect, &AbsoluteClippingRect);

	// get clipping rect

	core::rect<s32> client_clip(AbsoluteRect);
	client_clip.UpperLeftCorner.Y += 1;
	client_clip.UpperLeftCorner.X += 1;
	client_clip.LowerRightCorner.Y -= 1;
	client_clip.LowerRightCorner.X -= 1;
	if (m_scrollbar->isVisible()) {
		client_clip.LowerRightCorner.X =
				m_scrollbar->getAbsolutePosition().UpperLeftCorner.X;
	}
	client_clip.clipAgainst(AbsoluteClippingRect);

	// draw visible rows

	s32 scrollpos = m_scrollbar->getPos();
	s32 row_min = scrollpos / m_rowheight;
	s32 row_max = (scrollpos + AbsoluteRect.getHeight() - 1)
			/ m_rowheight + 1;
	row_max = MYMIN(row_max, (s32) m_visible_rows.size());

	core::rect<s32> row_rect(AbsoluteRect);
	if (m_scrollbar->isVisible())
		row_rect.LowerRightCorner.X -=
			skin->getSize(gui::EGDS_SCROLLBAR_SIZE);
	row_rect.UpperLeftCorner.Y += row_min * m_rowheight - scrollpos;
	row_rect.LowerRightCorner.Y = row_rect.UpperLeftCorner.Y + m_rowheight;

	for (s32 i = row_min; i < row_max; ++i) {
		Row *row = &m_rows[m_visible_rows[i]];
		bool is_sel = i == m_selected;
		video::SColor color = m_color;

		if (is_sel) {
			skin->draw2DRectangle(this, m_highlight, row_rect, &client_clip);
			color = m_highlight_text;
		}

		for (s32 j = 0; j < row->cellcount; ++j)
			drawCell(&row->cells[j], color, row_rect, client_clip);

		row_rect.UpperLeftCorner.Y += m_rowheight;
		row_rect.LowerRightCorner.Y += m_rowheight;
	}

	// Draw children
	IGUIElement::draw();
}

void GUITable::drawCell(const Cell *cell, video::SColor color,
		const core::rect<s32> &row_rect,
		const core::rect<s32> &client_clip)
{
	if ((cell->content_type == COLUMN_TYPE_TEXT)
			|| (cell->content_type == COLUMN_TYPE_TREE)) {

		core::rect<s32> text_rect = row_rect;
		text_rect.UpperLeftCorner.X = row_rect.UpperLeftCorner.X
				+ cell->xpos;
		text_rect.LowerRightCorner.X = row_rect.UpperLeftCorner.X
				+ cell->xmax;

		if (cell->color_defined)
			color = cell->color;

		if (m_font) {
			if (cell->content_type == COLUMN_TYPE_TEXT)
				m_font->draw(m_strings[cell->content_index],
						text_rect, color,
						false, true, &client_clip);
			else // tree
				m_font->draw(cell->content_index ? L"+" : L"-",
						text_rect, color,
						false, true, &client_clip);
		}
	}
	else if (cell->content_type == COLUMN_TYPE_IMAGE) {

		if (cell->content_index < 0)
			return;

		video::IVideoDriver *driver = Environment->getVideoDriver();
		video::ITexture *image = m_images[cell->content_index];

		if (image) {
			core::position2d<s32> dest_pos =
					row_rect.UpperLeftCorner;
			dest_pos.X += cell->xpos;
			core::rect<s32> source_rect(
					core::position2d<s32>(0, 0),
					image->getOriginalSize());
			s32 imgh = source_rect.LowerRightCorner.Y;
			s32 rowh = row_rect.getHeight();
			if (imgh < rowh)
				dest_pos.Y += (rowh - imgh) / 2;
			else
				source_rect.LowerRightCorner.Y = rowh;

			video::SColor color(255, 255, 255, 255);

			driver->draw2DImage(image, dest_pos, source_rect,
					&client_clip, color, true);
		}
	}
}

bool GUITable::OnEvent(const SEvent &event)
{
	if (!isEnabled())
		return IGUIElement::OnEvent(event);

	if (event.EventType == EET_KEY_INPUT_EVENT) {
		if (event.KeyInput.PressedDown && (
				event.KeyInput.Key == KEY_DOWN ||
				event.KeyInput.Key == KEY_UP   ||
				event.KeyInput.Key == KEY_HOME ||
				event.KeyInput.Key == KEY_END  ||
				event.KeyInput.Key == KEY_NEXT ||
				event.KeyInput.Key == KEY_PRIOR)) {
			s32 offset = 0;
			switch (event.KeyInput.Key) {
				case KEY_DOWN:
					offset = 1;
					break;
				case KEY_UP:
					offset = -1;
					break;
				case KEY_HOME:
					offset = - (s32) m_visible_rows.size();
					break;
				case KEY_END:
					offset = m_visible_rows.size();
					break;
				case KEY_NEXT:
					offset = AbsoluteRect.getHeight() / m_rowheight;
					break;
				case KEY_PRIOR:
					offset = - (s32) (AbsoluteRect.getHeight() / m_rowheight);
					break;
				default:
					break;
			}
			s32 old_selected = m_selected;
			s32 rowcount = m_visible_rows.size();
			if (rowcount != 0) {
				m_selected = rangelim(m_selected + offset, 0, rowcount-1);
				autoScroll();
			}

			if (m_selected != old_selected)
				sendTableEvent(0, false);

			return true;
		}
		else if (event.KeyInput.PressedDown && (
				event.KeyInput.Key == KEY_LEFT ||
				event.KeyInput.Key == KEY_RIGHT)) {
			// Open/close subtree via keyboard
			if (m_selected >= 0) {
				int dir = event.KeyInput.Key == KEY_LEFT ? -1 : 1;
				toggleVisibleTree(m_selected, dir, true);
			}
			return true;
		}
		else if (!event.KeyInput.PressedDown && (
				event.KeyInput.Key == KEY_RETURN ||
				event.KeyInput.Key == KEY_SPACE)) {
			sendTableEvent(0, true);
			return true;
		}
		else if (event.KeyInput.Key == KEY_ESCAPE ||
				event.KeyInput.Key == KEY_SPACE) {
			// pass to parent
		}
		else if (event.KeyInput.PressedDown && event.KeyInput.Char) {
			// change selection based on text as it is typed
			s32 now = getTimeMs();
			if (now - m_keynav_time >= 500)
				m_keynav_buffer = L"";
			m_keynav_time = now;

			// add to key buffer if not a key repeat
			if (!(m_keynav_buffer.size() == 1 &&
					m_keynav_buffer[0] == event.KeyInput.Char)) {
				m_keynav_buffer.append(event.KeyInput.Char);
			}

			// find the selected item, starting at the current selection
			// don't change selection if the key buffer matches the current item
			s32 old_selected = m_selected;
			s32 start = MYMAX(m_selected, 0);
			s32 rowcount = m_visible_rows.size();
			for (s32 k = 1; k < rowcount; ++k) {
				s32 current = start + k;
				if (current >= rowcount)
					current -= rowcount;
				if (doesRowStartWith(getRow(current), m_keynav_buffer)) {
					m_selected = current;
					break;
				}
			}
			autoScroll();
			if (m_selected != old_selected)
				sendTableEvent(0, false);

			return true;
		}
	}
	if (event.EventType == EET_MOUSE_INPUT_EVENT) {
		core::position2d<s32> p(event.MouseInput.X, event.MouseInput.Y);

		if (event.MouseInput.Event == EMIE_MOUSE_WHEEL) {
			m_scrollbar->setPos(m_scrollbar->getPos() +
					(event.MouseInput.Wheel < 0 ? -3 : 3) *
					- (s32) m_rowheight / 2);
			return true;
		}

		// Find hovered row and cell
		bool really_hovering = false;
		s32 row_i = getRowAt(p.Y, really_hovering);
		const Cell *cell = NULL;
		if (really_hovering) {
			s32 cell_j = getCellAt(p.X, row_i);
			if (cell_j >= 0)
				cell = &(getRow(row_i)->cells[cell_j]);
		}

		// Update tooltip
		setToolTipText(cell ? m_strings[cell->tooltip_index].c_str() : L"");

		// Fix for #1567/#1806:
		// IGUIScrollBar passes double click events to its parent,
		// which we don't want. Detect this case and discard the event
		if (event.MouseInput.Event != EMIE_MOUSE_MOVED &&
				m_scrollbar->isVisible() &&
				m_scrollbar->isPointInside(p))
			return true;

		if (event.MouseInput.isLeftPressed() &&
				(isPointInside(p) ||
				 event.MouseInput.Event == EMIE_MOUSE_MOVED)) {
			s32 sel_column = 0;
			bool sel_doubleclick = (event.MouseInput.Event
					== EMIE_LMOUSE_DOUBLE_CLICK);
			bool plusminus_clicked = false;

			// For certain events (left click), report column
			// Also open/close subtrees when the +/- is clicked
			if (cell && (
					event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN ||
					event.MouseInput.Event == EMIE_LMOUSE_DOUBLE_CLICK ||
					event.MouseInput.Event == EMIE_LMOUSE_TRIPLE_CLICK)) {
				sel_column = cell->reported_column;
				if (cell->content_type == COLUMN_TYPE_TREE)
					plusminus_clicked = true;
			}

			if (plusminus_clicked) {
				if (event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN) {
					toggleVisibleTree(row_i, 0, false);
				}
			}
			else {
				// Normal selection
				s32 old_selected = m_selected;
				m_selected = row_i;
				autoScroll();

				if (m_selected != old_selected ||
						sel_column >= 1 ||
						sel_doubleclick) {
					sendTableEvent(sel_column, sel_doubleclick);
				}
			}
		}
		return true;
	}
	if (event.EventType == EET_GUI_EVENT &&
			event.GUIEvent.EventType == gui::EGET_SCROLL_BAR_CHANGED &&
			event.GUIEvent.Caller == m_scrollbar) {
		// Don't pass events from our scrollbar to the parent
		return true;
	}

	return IGUIElement::OnEvent(event);
}

/******************************************************************************/
/* GUITable helper functions                                                  */
/******************************************************************************/

s32 GUITable::allocString(const std::string &text)
{
	std::map<std::string, s32>::iterator it = m_alloc_strings.find(text);
	if (it == m_alloc_strings.end()) {
		s32 id = m_strings.size();
		std::wstring wtext = narrow_to_wide(text);
		m_strings.push_back(core::stringw(wtext.c_str()));
		m_alloc_strings.insert(std::make_pair(text, id));
		return id;
	}
	else {
		return it->second;
	}
}

s32 GUITable::allocImage(const std::string &imagename)
{
	std::map<std::string, s32>::iterator it = m_alloc_images.find(imagename);
	if (it == m_alloc_images.end()) {
		s32 id = m_images.size();
		m_images.push_back(m_tsrc->getTexture(imagename));
		m_alloc_images.insert(std::make_pair(imagename, id));
		return id;
	}
	else {
		return it->second;
	}
}

void GUITable::allocationComplete()
{
	// Called when done with creating rows and cells from table data,
	// i.e. when allocString and allocImage won't be called anymore
	m_alloc_strings.clear();
	m_alloc_images.clear();
}

const GUITable::Row* GUITable::getRow(s32 i) const
{
	if (i >= 0 && i < (s32) m_visible_rows.size())
		return &m_rows[m_visible_rows[i]];
	else
		return NULL;
}

bool GUITable::doesRowStartWith(const Row *row, const core::stringw &str) const
{
	if (row == NULL)
		return false;

	for (s32 j = 0; j < row->cellcount; ++j) {
		Cell *cell = &row->cells[j];
		if (cell->content_type == COLUMN_TYPE_TEXT) {
			const core::stringw &cellstr = m_strings[cell->content_index];
			if (cellstr.size() >= str.size() &&
					str.equals_ignore_case(cellstr.subString(0, str.size())))
				return true;
		}
	}
	return false;
}

s32 GUITable::getRowAt(s32 y, bool &really_hovering) const
{
	really_hovering = false;

	s32 rowcount = m_visible_rows.size();
	if (rowcount == 0)
		return -1;

	// Use arithmetic to find row
	s32 rel_y = y - AbsoluteRect.UpperLeftCorner.Y - 1;
	s32 i = (rel_y + m_scrollbar->getPos()) / m_rowheight;

	if (i >= 0 && i < rowcount) {
		really_hovering = true;
		return i;
	}
	else if (i < 0)
		return 0;
	else
		return rowcount - 1;

}

s32 GUITable::getCellAt(s32 x, s32 row_i) const
{
	const Row *row = getRow(row_i);
	if (row == NULL)
		return -1;

	// Use binary search to find cell in row
	s32 rel_x = x - AbsoluteRect.UpperLeftCorner.X - 1;
	s32 jmin = 0;
	s32 jmax = row->cellcount - 1;
	while (jmin < jmax) {
		s32 pivot = jmin + (jmax - jmin) / 2;
		assert(pivot >= 0 && pivot < row->cellcount);
		const Cell *cell = &row->cells[pivot];

		if (rel_x >= cell->xmin && rel_x <= cell->xmax)
			return pivot;
		else if (rel_x < cell->xmin)
			jmax = pivot - 1;
		else
			jmin = pivot + 1;
	}

	if (jmin >= 0 && jmin < row->cellcount &&
			rel_x >= row->cells[jmin].xmin &&
			rel_x <= row->cells[jmin].xmax)
		return jmin;
	else
		return -1;
}

void GUITable::autoScroll()
{
	if (m_selected >= 0) {
		s32 pos = m_scrollbar->getPos();
		s32 maxpos = m_selected * m_rowheight;
		s32 minpos = maxpos - (AbsoluteRect.getHeight() - m_rowheight);
		if (pos > maxpos)
			m_scrollbar->setPos(maxpos);
		else if (pos < minpos)
			m_scrollbar->setPos(minpos);
	}
}

void GUITable::updateScrollBar()
{
	s32 totalheight = m_rowheight * m_visible_rows.size();
	s32 scrollmax = MYMAX(0, totalheight - AbsoluteRect.getHeight());
	m_scrollbar->setVisible(scrollmax > 0);
	m_scrollbar->setMax(scrollmax);
	m_scrollbar->setSmallStep(m_rowheight);
	m_scrollbar->setLargeStep(2 * m_rowheight);
}

void GUITable::sendTableEvent(s32 column, bool doubleclick)
{
	m_sel_column = column;
	m_sel_doubleclick = doubleclick;
	if (Parent) {
		SEvent e;
		memset(&e, 0, sizeof e);
		e.EventType = EET_GUI_EVENT;
		e.GUIEvent.Caller = this;
		e.GUIEvent.Element = 0;
		e.GUIEvent.EventType = gui::EGET_TABLE_CHANGED;
		Parent->OnEvent(e);
	}
}

void GUITable::getOpenedTrees(std::set<s32> &opened_trees) const
{
	opened_trees.clear();
	s32 rowcount = m_rows.size();
	for (s32 i = 0; i < rowcount - 1; ++i) {
		if (m_rows[i].indent < m_rows[i+1].indent &&
				m_rows[i+1].visible_index != -2)
			opened_trees.insert(i);
	}
}

void GUITable::setOpenedTrees(const std::set<s32> &opened_trees)
{
	s32 old_selected = getSelected();

	std::vector<s32> parents;
	std::vector<s32> closed_parents;

	m_visible_rows.clear();

	for (size_t i = 0; i < m_rows.size(); ++i) {
		Row *row = &m_rows[i];

		// Update list of ancestors
		while (!parents.empty() && m_rows[parents.back()].indent >= row->indent)
			parents.pop_back();
		while (!closed_parents.empty() &&
				m_rows[closed_parents.back()].indent >= row->indent)
			closed_parents.pop_back();

		assert(closed_parents.size() <= parents.size());

		if (closed_parents.empty()) {
			// Visible row
			row->visible_index = m_visible_rows.size();
			m_visible_rows.push_back(i);
		}
		else if (parents.back() == closed_parents.back()) {
			// Invisible row, direct parent is closed
			row->visible_index = -2;
		}
		else {
			// Invisible row, direct parent is open, some ancestor is closed
			row->visible_index = -1;
		}

		// If not a leaf, add to parents list
		if (i < m_rows.size()-1 && row->indent < m_rows[i+1].indent) {
			parents.push_back(i);

			s32 content_index = 0; // "-", open
			if (opened_trees.count(i) == 0) {
				closed_parents.push_back(i);
				content_index = 1; // "+", closed
			}

			// Update all cells of type "tree"
			for (s32 j = 0; j < row->cellcount; ++j)
				if (row->cells[j].content_type == COLUMN_TYPE_TREE)
					row->cells[j].content_index = content_index;
		}
	}

	updateScrollBar();

	setSelected(old_selected);
}

void GUITable::openTree(s32 to_open)
{
	std::set<s32> opened_trees;
	getOpenedTrees(opened_trees);
	opened_trees.insert(to_open);
	setOpenedTrees(opened_trees);
}

void GUITable::closeTree(s32 to_close)
{
	std::set<s32> opened_trees;
	getOpenedTrees(opened_trees);
	opened_trees.erase(to_close);
	setOpenedTrees(opened_trees);
}

// The following function takes a visible row index (hidden rows skipped)
// dir: -1 = left (close), 0 = auto (toggle), 1 = right (open)
void GUITable::toggleVisibleTree(s32 row_i, int dir, bool move_selection)
{
	// Check if the chosen tree is currently open
	const Row *row = getRow(row_i);
	if (row == NULL)
		return;

	bool was_open = false;
	for (s32 j = 0; j < row->cellcount; ++j) {
		if (row->cells[j].content_type == COLUMN_TYPE_TREE) {
			was_open = row->cells[j].content_index == 0;
			break;
		}
	}

	// Check if the chosen tree should be opened
	bool do_open = !was_open;
	if (dir < 0)
		do_open = false;
	else if (dir > 0)
		do_open = true;

	// Close or open the tree; the heavy lifting is done by setOpenedTrees
	if (was_open && !do_open)
		closeTree(m_visible_rows[row_i]);
	else if (!was_open && do_open)
		openTree(m_visible_rows[row_i]);

	// Change selected row if requested by caller,
	// this is useful for keyboard navigation
	if (move_selection) {
		s32 sel = row_i;
		if (was_open && do_open) {
			// Move selection to first child
			const Row *maybe_child = getRow(sel + 1);
			if (maybe_child && maybe_child->indent > row->indent)
				sel++;
		}
		else if (!was_open && !do_open) {
			// Move selection to parent
			assert(getRow(sel) != NULL);
			while (sel > 0 && getRow(sel - 1)->indent >= row->indent)
				sel--;
			sel--;
			if (sel < 0)  // was root already selected?
				sel = row_i;
		}
		if (sel != m_selected) {
			m_selected = sel;
			autoScroll();
			sendTableEvent(0, false);
		}
	}
}

void GUITable::alignContent(Cell *cell, s32 xmax, s32 content_width, s32 align)
{
	// requires that cell.xmin, cell.xmax are properly set
	// align = 0: left aligned, 1: centered, 2: right aligned, 3: inline
	if (align == 0) {
		cell->xpos = cell->xmin;
		cell->xmax = xmax;
	}
	else if (align == 1) {
		cell->xpos = (cell->xmin + xmax - content_width) / 2;
		cell->xmax = xmax;
	}
	else if (align == 2) {
		cell->xpos = xmax - content_width;
		cell->xmax = xmax;
	}
	else {
		// inline alignment: the cells of the column don't have an aligned
		// right border, the right border of each cell depends on the content
		cell->xpos = cell->xmin;
		cell->xmax = cell->xmin + content_width;
	}
}