src/guiTable.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20
  21 #include "guiTable.h"
  22 #include <queue>
  23 #include <sstream>
  24 #include <utility>
  25 #include <cstring>
  26 #include <IGUISkin.h>
  27 #include <IGUIFont.h>
  28 #include <IGUIScrollBar.h>
  29 #include "client/renderingengine.h"
  30 #include "debug.h"
  31 #include "log.h"
  32 #include "client/tile.h"
  33 #include "gettime.h"
  34 #include "util/string.h"
  35 #include "util/numeric.h"
  36 #include "util/string.h" // for parseColorString()
  37 #include "settings.h" // for settings
  38 #include "porting.h" // for dpi
  39 #include "guiscalingfilter.h"
  40
  41 /*
  42         GUITable
  43 */
  44
  45 GUITable::GUITable(gui::IGUIEnvironment *env,
  46                 gui::IGUIElement* parent, s32 id,
  47                 core::rect<s32> rectangle,
  48                 ISimpleTextureSource *tsrc
  49 ):
  50         gui::IGUIElement(gui::EGUIET_ELEMENT, env, parent, id, rectangle),
  51         m_tsrc(tsrc)
  52 {
  53         assert(tsrc != NULL);
  54
  55         gui::IGUISkin* skin = Environment->getSkin();
  56
  57         m_font = skin->getFont();
  58         if (m_font) {
  59                 m_font->grab();
  60                 m_rowheight = m_font->getDimension(L"A").Height + 4;
  61                 m_rowheight = MYMAX(m_rowheight, 1);
  62         }
  63
  64         const s32 s = skin->getSize(gui::EGDS_SCROLLBAR_SIZE);
  65         m_scrollbar = Environment->addScrollBar(false,
  66                         core::rect<s32>(RelativeRect.getWidth() - s,
  67                                         0,
  68                                         RelativeRect.getWidth(),
  69                                         RelativeRect.getHeight()),
  70                         this, -1);
  71         m_scrollbar->setSubElement(true);
  72         m_scrollbar->setTabStop(false);
  73         m_scrollbar->setAlignment(gui::EGUIA_LOWERRIGHT, gui::EGUIA_LOWERRIGHT,
  74                         gui::EGUIA_UPPERLEFT, gui::EGUIA_LOWERRIGHT);
  75         m_scrollbar->setVisible(false);
  76         m_scrollbar->setPos(0);
  77
  78         setTabStop(true);
  79         setTabOrder(-1);
  80         updateAbsolutePosition();
  81
  82         core::rect<s32> relative_rect = m_scrollbar->getRelativePosition();
  83         s32 width = (relative_rect.getWidth()/(2.0/3.0)) *
  84                         RenderingEngine::getDisplayDensity() *
  85                         g_settings->getFloat("gui_scaling");
  86         m_scrollbar->setRelativePosition(core::rect<s32>(
  87                         relative_rect.LowerRightCorner.X-width,relative_rect.UpperLeftCorner.Y,
  88                         relative_rect.LowerRightCorner.X,relative_rect.LowerRightCorner.Y
  89                         ));
  90 }
  91
  92 GUITable::~GUITable()
  93 {
  94         for (size_t i = 0; i < m_rows.size(); ++i)
  95                 delete[] m_rows[i].cells;
  96
  97         if (m_font)
  98                 m_font->drop();
  99
 100         m_scrollbar->remove();
 101 }
 102
 103 GUITable::Option GUITable::splitOption(const std::string &str)
 104 {
 105         size_t equal_pos = str.find('=');
 106         if (equal_pos == std::string::npos)
 107                 return GUITable::Option(str, "");
 108         else
 109                 return GUITable::Option(str.substr(0, equal_pos),
 110                                 str.substr(equal_pos + 1));
 111 }
 112
 113 void GUITable::setTextList(const std::vector<std::string> &content,
 114                 bool transparent)
 115 {
 116         clear();
 117
 118         if (transparent) {
 119                 m_background.setAlpha(0);
 120                 m_border = false;
 121         }
 122
 123         m_is_textlist = true;
 124
 125         s32 empty_string_index = allocString("");
 126
 127         m_rows.resize(content.size());
 128         for (s32 i = 0; i < (s32) content.size(); ++i) {
 129                 Row *row = &m_rows[i];
 130                 row->cells = new Cell[1];
 131                 row->cellcount = 1;
 132                 row->indent = 0;
 133                 row->visible_index = i;
 134                 m_visible_rows.push_back(i);
 135
 136                 Cell *cell = row->cells;
 137                 cell->xmin = 0;
 138                 cell->xmax = 0x7fff;  // something large enough
 139                 cell->xpos = 6;
 140                 cell->content_type = COLUMN_TYPE_TEXT;
 141                 cell->content_index = empty_string_index;
 142                 cell->tooltip_index = empty_string_index;
 143                 cell->color.set(255, 255, 255, 255);
 144                 cell->color_defined = false;
 145                 cell->reported_column = 1;
 146
 147                 // parse row content (color)
 148                 const std::string &s = content[i];
 149                 if (s[0] == '#' && s[1] == '#') {
 150                         // double # to escape
 151                         cell->content_index = allocString(s.substr(2));
 152                 }
 153                 else if (s[0] == '#' && s.size() >= 7 &&
 154                                 parseColorString(
 155                                         s.substr(0,7), cell->color, false)) {
 156                         // single # for color
 157                         cell->color_defined = true;
 158                         cell->content_index = allocString(s.substr(7));
 159                 }
 160                 else {
 161                         // no #, just text
 162                         cell->content_index = allocString(s);
 163                 }
 164
 165         }
 166
 167         allocationComplete();
 168
 169         // Clamp scroll bar position
 170         updateScrollBar();
 171 }
 172
 173 void GUITable::setTable(const TableOptions &options,
 174                 const TableColumns &columns,
 175                 std::vector<std::string> &content)
 176 {
 177         clear();
 178
 179         // Naming conventions:
 180         // i is always a row index, 0-based
 181         // j is always a column index, 0-based
 182         // k is another index, for example an option index
 183
 184         // Handle a stupid error case... (issue #1187)
 185         if (columns.empty()) {
 186                 TableColumn text_column;
 187                 text_column.type = "text";
 188                 TableColumns new_columns;
 189                 new_columns.push_back(text_column);
 190                 setTable(options, new_columns, content);
 191                 return;
 192         }
 193
 194         // Handle table options
 195         video::SColor default_color(255, 255, 255, 255);
 196         s32 opendepth = 0;
 197         for (size_t k = 0; k < options.size(); ++k) {
 198                 const std::string &name = options[k].name;
 199                 const std::string &value = options[k].value;
 200                 if (name == "color")
 201                         parseColorString(value, m_color, false);
 202                 else if (name == "background")
 203                         parseColorString(value, m_background, false);
 204                 else if (name == "border")
 205                         m_border = is_yes(value);
 206                 else if (name == "highlight")
 207                         parseColorString(value, m_highlight, false);
 208                 else if (name == "highlight_text")
 209                         parseColorString(value, m_highlight_text, false);
 210                 else if (name == "opendepth")
 211                         opendepth = stoi(value);
 212                 else
 213                         errorstream<<"Invalid table option: \""<<name<<"\""
 214                                 <<" (value=\""<<value<<"\")"<<std::endl;
 215         }
 216
 217         // Get number of columns and rows
 218         // note: error case columns.size() == 0 was handled above
 219         s32 colcount = columns.size();
 220         assert(colcount >= 1);
 221         // rowcount = ceil(cellcount / colcount) but use integer arithmetic
 222         s32 rowcount = (content.size() + colcount - 1) / colcount;
 223         assert(rowcount >= 0);
 224         // Append empty strings to content if there is an incomplete row
 225         s32 cellcount = rowcount * colcount;
 226         while (content.size() < (u32) cellcount)
 227                 content.push_back("");
 228
 229         // Create temporary rows (for processing columns)
 230         struct TempRow {
 231                 // Current horizontal position (may different between rows due
 232                 // to indent/tree columns, or text/image columns with width<0)
 233                 s32 x;
 234                 // Tree indentation level
 235                 s32 indent;
 236                 // Next cell: Index into m_strings or m_images
 237                 s32 content_index;
 238                 // Next cell: Width in pixels
 239                 s32 content_width;
 240                 // Vector of completed cells in this row
 241                 std::vector<Cell> cells;
 242                 // Stores colors and how long they last (maximum column index)
 243                 std::vector<std::pair<video::SColor, s32> > colors;
 244
 245                 TempRow(): x(0), indent(0), content_index(0), content_width(0) {}
 246         };
 247         TempRow *rows = new TempRow[rowcount];
 248
 249         // Get em width. Pedantically speaking, the width of "M" is not
 250         // necessarily the same as the em width, but whatever, close enough.
 251         s32 em = 6;
 252         if (m_font)
 253                 em = m_font->getDimension(L"M").Width;
 254
 255         s32 default_tooltip_index = allocString("");
 256
 257         std::map<s32, s32> active_image_indices;
 258
 259         // Process content in column-major order
 260         for (s32 j = 0; j < colcount; ++j) {
 261                 // Check column type
 262                 ColumnType columntype = COLUMN_TYPE_TEXT;
 263                 if (columns[j].type == "text")
 264                         columntype = COLUMN_TYPE_TEXT;
 265                 else if (columns[j].type == "image")
 266                         columntype = COLUMN_TYPE_IMAGE;
 267                 else if (columns[j].type == "color")
 268                         columntype = COLUMN_TYPE_COLOR;
 269                 else if (columns[j].type == "indent")
 270                         columntype = COLUMN_TYPE_INDENT;
 271                 else if (columns[j].type == "tree")
 272                         columntype = COLUMN_TYPE_TREE;
 273                 else
 274                         errorstream<<"Invalid table column type: \""
 275                                 <<columns[j].type<<"\""<<std::endl;
 276
 277                 // Process column options
 278                 s32 padding = myround(0.5 * em);
 279                 s32 tooltip_index = default_tooltip_index;
 280                 s32 align = 0;
 281                 s32 width = 0;
 282                 s32 span = colcount;
 283
 284                 if (columntype == COLUMN_TYPE_INDENT) {
 285                         padding = 0; // default indent padding
 286                 }
 287                 if (columntype == COLUMN_TYPE_INDENT ||
 288                                 columntype == COLUMN_TYPE_TREE) {
 289                         width = myround(em * 1.5); // default indent width
 290                 }
 291
 292                 for (size_t k = 0; k < columns[j].options.size(); ++k) {
 293                         const std::string &name = columns[j].options[k].name;
 294                         const std::string &value = columns[j].options[k].value;
 295                         if (name == "padding")
 296                                 padding = myround(stof(value) * em);
 297                         else if (name == "tooltip")
 298                                 tooltip_index = allocString(value);
 299                         else if (name == "align" && value == "left")
 300                                 align = 0;
 301                         else if (name == "align" && value == "center")
 302                                 align = 1;
 303                         else if (name == "align" && value == "right")
 304                                 align = 2;
 305                         else if (name == "align" && value == "inline")
 306                                 align = 3;
 307                         else if (name == "width")
 308                                 width = myround(stof(value) * em);
 309                         else if (name == "span" && columntype == COLUMN_TYPE_COLOR)
 310                                 span = stoi(value);
 311                         else if (columntype == COLUMN_TYPE_IMAGE &&
 312                                         !name.empty() &&
 313                                         string_allowed(name, "0123456789")) {
 314                                 s32 content_index = allocImage(value);
 315                                 active_image_indices.insert(std::make_pair(
 316                                                         stoi(name),
 317                                                         content_index));
 318                         }
 319                         else {
 320                                 errorstream<<"Invalid table column option: \""<<name<<"\""
 321                                         <<" (value=\""<<value<<"\")"<<std::endl;
 322                         }
 323                 }
 324
 325                 // If current column type can use information from "color" columns,
 326                 // find out which of those is currently active
 327                 if (columntype == COLUMN_TYPE_TEXT) {
 328                         for (s32 i = 0; i < rowcount; ++i) {
 329                                 TempRow *row = &rows[i];
 330                                 while (!row->colors.empty() && row->colors.back().second < j)
 331                                         row->colors.pop_back();
 332                         }
 333                 }
 334
 335                 // Make template for new cells
 336                 Cell newcell;
 337                 memset(&newcell, 0, sizeof newcell);
 338                 newcell.content_type = columntype;
 339                 newcell.tooltip_index = tooltip_index;
 340                 newcell.reported_column = j+1;
 341
 342                 if (columntype == COLUMN_TYPE_TEXT) {
 343                         // Find right edge of column
 344                         s32 xmax = 0;
 345                         for (s32 i = 0; i < rowcount; ++i) {
 346                                 TempRow *row = &rows[i];
 347                                 row->content_index = allocString(content[i * colcount + j]);
 348                                 const core::stringw &text = m_strings[row->content_index];
 349                                 row->content_width = m_font ?
 350                                         m_font->getDimension(text.c_str()).Width : 0;
 351                                 row->content_width = MYMAX(row->content_width, width);
 352                                 s32 row_xmax = row->x + padding + row->content_width;
 353                                 xmax = MYMAX(xmax, row_xmax);
 354                         }
 355                         // Add a new cell (of text type) to each row
 356                         for (s32 i = 0; i < rowcount; ++i) {
 357                                 newcell.xmin = rows[i].x + padding;
 358                                 alignContent(&newcell, xmax, rows[i].content_width, align);
 359                                 newcell.content_index = rows[i].content_index;
 360                                 newcell.color_defined = !rows[i].colors.empty();
 361                                 if (newcell.color_defined)
 362                                         newcell.color = rows[i].colors.back().first;
 363                                 rows[i].cells.push_back(newcell);
 364                                 rows[i].x = newcell.xmax;
 365                         }
 366                 }
 367                 else if (columntype == COLUMN_TYPE_IMAGE) {
 368                         // Find right edge of column
 369                         s32 xmax = 0;
 370                         for (s32 i = 0; i < rowcount; ++i) {
 371                                 TempRow *row = &rows[i];
 372                                 row->content_index = -1;
 373
 374                                 // Find content_index. Image indices are defined in
 375                                 // column options so check active_image_indices.
 376                                 s32 image_index = stoi(content[i * colcount + j]);
 377                                 std::map<s32, s32>::iterator image_iter =
 378                                         active_image_indices.find(image_index);
 379                                 if (image_iter != active_image_indices.end())
 380                                         row->content_index = image_iter->second;
 381
 382                                 // Get texture object (might be NULL)
 383                                 video::ITexture *image = NULL;
 384                                 if (row->content_index >= 0)
 385                                         image = m_images[row->content_index];
 386
 387                                 // Get content width and update xmax
 388                                 row->content_width = image ? image->getOriginalSize().Width : 0;
 389                                 row->content_width = MYMAX(row->content_width, width);
 390                                 s32 row_xmax = row->x + padding + row->content_width;
 391                                 xmax = MYMAX(xmax, row_xmax);
 392                         }
 393                         // Add a new cell (of image type) to each row
 394                         for (s32 i = 0; i < rowcount; ++i) {
 395                                 newcell.xmin = rows[i].x + padding;
 396                                 alignContent(&newcell, xmax, rows[i].content_width, align);
 397                                 newcell.content_index = rows[i].content_index;
 398                                 rows[i].cells.push_back(newcell);
 399                                 rows[i].x = newcell.xmax;
 400                         }
 401                         active_image_indices.clear();
 402                 }
 403                 else if (columntype == COLUMN_TYPE_COLOR) {
 404                         for (s32 i = 0; i < rowcount; ++i) {
 405                                 video::SColor cellcolor(255, 255, 255, 255);
 406                                 if (parseColorString(content[i * colcount + j], cellcolor, true))
 407                                         rows[i].colors.push_back(std::make_pair(cellcolor, j+span));
 408                         }
 409                 }
 410                 else if (columntype == COLUMN_TYPE_INDENT ||
 411                                 columntype == COLUMN_TYPE_TREE) {
 412                         // For column type "tree", reserve additional space for +/-
 413                         // Also enable special processing for treeview-type tables
 414                         s32 content_width = 0;
 415                         if (columntype == COLUMN_TYPE_TREE) {
 416                                 content_width = m_font ? m_font->getDimension(L"+").Width : 0;
 417                                 m_has_tree_column = true;
 418                         }
 419                         // Add a new cell (of indent or tree type) to each row
 420                         for (s32 i = 0; i < rowcount; ++i) {
 421                                 TempRow *row = &rows[i];
 422
 423                                 s32 indentlevel = stoi(content[i * colcount + j]);
 424                                 indentlevel = MYMAX(indentlevel, 0);
 425                                 if (columntype == COLUMN_TYPE_TREE)
 426                                         row->indent = indentlevel;
 427
 428                                 newcell.xmin = row->x + padding;
 429                                 newcell.xpos = newcell.xmin + indentlevel * width;
 430                                 newcell.xmax = newcell.xpos + content_width;
 431                                 newcell.content_index = 0;
 432                                 newcell.color_defined = !rows[i].colors.empty();
 433                                 if (newcell.color_defined)
 434                                         newcell.color = rows[i].colors.back().first;
 435                                 row->cells.push_back(newcell);
 436                                 row->x = newcell.xmax;
 437                         }
 438                 }
 439         }
 440
 441         // Copy temporary rows to not so temporary rows
 442         if (rowcount >= 1) {
 443                 m_rows.resize(rowcount);
 444                 for (s32 i = 0; i < rowcount; ++i) {
 445                         Row *row = &m_rows[i];
 446                         row->cellcount = rows[i].cells.size();
 447                         row->cells = new Cell[row->cellcount];
 448                         memcpy((void*) row->cells, (void*) &rows[i].cells[0],
 449                                         row->cellcount * sizeof(Cell));
 450                         row->indent = rows[i].indent;
 451                         row->visible_index = i;
 452                         m_visible_rows.push_back(i);
 453                 }
 454         }
 455
 456         if (m_has_tree_column) {
 457                 // Treeview: convert tree to indent cells on leaf rows
 458                 for (s32 i = 0; i < rowcount; ++i) {
 459                         if (i == rowcount-1 || m_rows[i].indent >= m_rows[i+1].indent)
 460                                 for (s32 j = 0; j < m_rows[i].cellcount; ++j)
 461                                         if (m_rows[i].cells[j].content_type == COLUMN_TYPE_TREE)
 462                                                 m_rows[i].cells[j].content_type = COLUMN_TYPE_INDENT;
 463                 }
 464
 465                 // Treeview: close rows according to opendepth option
 466                 std::set<s32> opened_trees;
 467                 for (s32 i = 0; i < rowcount; ++i)
 468                         if (m_rows[i].indent < opendepth)
 469                                 opened_trees.insert(i);
 470                 setOpenedTrees(opened_trees);
 471         }
 472
 473         // Delete temporary information used only during setTable()
 474         delete[] rows;
 475         allocationComplete();
 476
 477         // Clamp scroll bar position
 478         updateScrollBar();
 479 }
 480
 481 void GUITable::clear()
 482 {
 483         // Clean up cells and rows
 484         for (size_t i = 0; i < m_rows.size(); ++i)
 485                 delete[] m_rows[i].cells;
 486         m_rows.clear();
 487         m_visible_rows.clear();
 488
 489         // Get colors from skin
 490         gui::IGUISkin *skin = Environment->getSkin();
 491         m_color          = skin->getColor(gui::EGDC_BUTTON_TEXT);
 492         m_background     = skin->getColor(gui::EGDC_3D_HIGH_LIGHT);
 493         m_highlight      = skin->getColor(gui::EGDC_HIGH_LIGHT);
 494         m_highlight_text = skin->getColor(gui::EGDC_HIGH_LIGHT_TEXT);
 495
 496         // Reset members
 497         m_is_textlist = false;
 498         m_has_tree_column = false;
 499         m_selected = -1;
 500         m_sel_column = 0;
 501         m_sel_doubleclick = false;
 502         m_keynav_time = 0;
 503         m_keynav_buffer = L"";
 504         m_border = true;
 505         m_strings.clear();
 506         m_images.clear();
 507         m_alloc_strings.clear();
 508         m_alloc_images.clear();
 509 }
 510
 511 std::string GUITable::checkEvent()
 512 {
 513         s32 sel = getSelected();
 514         assert(sel >= 0);
 515
 516         if (sel == 0) {
 517                 return "INV";
 518         }
 519
 520         std::ostringstream os(std::ios::binary);
 521         if (m_sel_doubleclick) {
 522                 os<<"DCL:";
 523                 m_sel_doubleclick = false;
 524         }
 525         else {
 526                 os<<"CHG:";
 527         }
 528         os<<sel;
 529         if (!m_is_textlist) {
 530                 os<<":"<<m_sel_column;
 531         }
 532         return os.str();
 533 }
 534
 535 s32 GUITable::getSelected() const
 536 {
 537         if (m_selected < 0)
 538                 return 0;
 539
 540         assert(m_selected >= 0 && m_selected < (s32) m_visible_rows.size());
 541         return m_visible_rows[m_selected] + 1;
 542 }
 543
 544 void GUITable::setSelected(s32 index)
 545 {
 546         s32 old_selected = m_selected;
 547
 548         m_selected = -1;
 549         m_sel_column = 0;
 550         m_sel_doubleclick = false;
 551
 552         --index; // Switch from 1-based indexing to 0-based indexing
 553
 554         s32 rowcount = m_rows.size();
 555         if (rowcount == 0 || index < 0) {
 556                 return;
 557         } else if (index >= rowcount) {
 558                 index = rowcount - 1;
 559         }
 560
 561         // If the selected row is not visible, open its ancestors to make it visible
 562         bool selection_invisible = m_rows[index].visible_index < 0;
 563         if (selection_invisible) {
 564                 std::set<s32> opened_trees;
 565                 getOpenedTrees(opened_trees);
 566                 s32 indent = m_rows[index].indent;
 567                 for (s32 j = index - 1; j >= 0; --j) {
 568                         if (m_rows[j].indent < indent) {
 569                                 opened_trees.insert(j);
 570                                 indent = m_rows[j].indent;
 571                         }
 572                 }
 573                 setOpenedTrees(opened_trees);
 574         }
 575
 576         if (index >= 0) {
 577                 m_selected = m_rows[index].visible_index;
 578                 assert(m_selected >= 0 && m_selected < (s32) m_visible_rows.size());
 579         }
 580
 581         if (m_selected != old_selected || selection_invisible) {
 582                 autoScroll();
 583         }
 584 }
 585
 586 GUITable::DynamicData GUITable::getDynamicData() const
 587 {
 588         DynamicData dyndata;
 589         dyndata.selected = getSelected();
 590         dyndata.scrollpos = m_scrollbar->getPos();
 591         dyndata.keynav_time = m_keynav_time;
 592         dyndata.keynav_buffer = m_keynav_buffer;
 593         if (m_has_tree_column)
 594                 getOpenedTrees(dyndata.opened_trees);
 595         return dyndata;
 596 }
 597
 598 void GUITable::setDynamicData(const DynamicData &dyndata)
 599 {
 600         if (m_has_tree_column)
 601                 setOpenedTrees(dyndata.opened_trees);
 602
 603         m_keynav_time = dyndata.keynav_time;
 604         m_keynav_buffer = dyndata.keynav_buffer;
 605
 606         setSelected(dyndata.selected);
 607         m_sel_column = 0;
 608         m_sel_doubleclick = false;
 609
 610         m_scrollbar->setPos(dyndata.scrollpos);
 611 }
 612
 613 const c8* GUITable::getTypeName() const
 614 {
 615         return "GUITable";
 616 }
 617
 618 void GUITable::updateAbsolutePosition()
 619 {
 620         IGUIElement::updateAbsolutePosition();
 621         updateScrollBar();
 622 }
 623
 624 void GUITable::draw()
 625 {
 626         if (!IsVisible)
 627                 return;
 628
 629         gui::IGUISkin *skin = Environment->getSkin();
 630
 631         // draw background
 632
 633         bool draw_background = m_background.getAlpha() > 0;
 634         if (m_border)
 635                 skin->draw3DSunkenPane(this, m_background,
 636                                 true, draw_background,
 637                                 AbsoluteRect, &AbsoluteClippingRect);
 638         else if (draw_background)
 639                 skin->draw2DRectangle(this, m_background,
 640                                 AbsoluteRect, &AbsoluteClippingRect);
 641
 642         // get clipping rect
 643
 644         core::rect<s32> client_clip(AbsoluteRect);
 645         client_clip.UpperLeftCorner.Y += 1;
 646         client_clip.UpperLeftCorner.X += 1;
 647         client_clip.LowerRightCorner.Y -= 1;
 648         client_clip.LowerRightCorner.X -= 1;
 649         if (m_scrollbar->isVisible()) {
 650                 client_clip.LowerRightCorner.X =
 651                                 m_scrollbar->getAbsolutePosition().UpperLeftCorner.X;
 652         }
 653         client_clip.clipAgainst(AbsoluteClippingRect);
 654
 655         // draw visible rows
 656
 657         s32 scrollpos = m_scrollbar->getPos();
 658         s32 row_min = scrollpos / m_rowheight;
 659         s32 row_max = (scrollpos + AbsoluteRect.getHeight() - 1)
 660                         / m_rowheight + 1;
 661         row_max = MYMIN(row_max, (s32) m_visible_rows.size());
 662
 663         core::rect<s32> row_rect(AbsoluteRect);
 664         if (m_scrollbar->isVisible())
 665                 row_rect.LowerRightCorner.X -=
 666                         skin->getSize(gui::EGDS_SCROLLBAR_SIZE);
 667         row_rect.UpperLeftCorner.Y += row_min * m_rowheight - scrollpos;
 668         row_rect.LowerRightCorner.Y = row_rect.UpperLeftCorner.Y + m_rowheight;
 669
 670         for (s32 i = row_min; i < row_max; ++i) {
 671                 Row *row = &m_rows[m_visible_rows[i]];
 672                 bool is_sel = i == m_selected;
 673                 video::SColor color = m_color;
 674
 675                 if (is_sel) {
 676                         skin->draw2DRectangle(this, m_highlight, row_rect, &client_clip);
 677                         color = m_highlight_text;
 678                 }
 679
 680                 for (s32 j = 0; j < row->cellcount; ++j)
 681                         drawCell(&row->cells[j], color, row_rect, client_clip);
 682
 683                 row_rect.UpperLeftCorner.Y += m_rowheight;
 684                 row_rect.LowerRightCorner.Y += m_rowheight;
 685         }
 686
 687         // Draw children
 688         IGUIElement::draw();
 689 }
 690
 691 void GUITable::drawCell(const Cell *cell, video::SColor color,
 692                 const core::rect<s32> &row_rect,
 693                 const core::rect<s32> &client_clip)
 694 {
 695         if ((cell->content_type == COLUMN_TYPE_TEXT)
 696                         || (cell->content_type == COLUMN_TYPE_TREE)) {
 697
 698                 core::rect<s32> text_rect = row_rect;
 699                 text_rect.UpperLeftCorner.X = row_rect.UpperLeftCorner.X
 700                                 + cell->xpos;
 701                 text_rect.LowerRightCorner.X = row_rect.UpperLeftCorner.X
 702                                 + cell->xmax;
 703
 704                 if (cell->color_defined)
 705                         color = cell->color;
 706
 707                 if (m_font) {
 708                         if (cell->content_type == COLUMN_TYPE_TEXT)
 709                                 m_font->draw(m_strings[cell->content_index],
 710                                                 text_rect, color,
 711                                                 false, true, &client_clip);
 712                         else // tree
 713                                 m_font->draw(cell->content_index ? L"+" : L"-",
 714                                                 text_rect, color,
 715                                                 false, true, &client_clip);
 716                 }
 717         }
 718         else if (cell->content_type == COLUMN_TYPE_IMAGE) {
 719
 720                 if (cell->content_index < 0)
 721                         return;
 722
 723                 video::IVideoDriver *driver = Environment->getVideoDriver();
 724                 video::ITexture *image = m_images[cell->content_index];
 725
 726                 if (image) {
 727                         core::position2d<s32> dest_pos =
 728                                         row_rect.UpperLeftCorner;
 729                         dest_pos.X += cell->xpos;
 730                         core::rect<s32> source_rect(
 731                                         core::position2d<s32>(0, 0),
 732                                         image->getOriginalSize());
 733                         s32 imgh = source_rect.LowerRightCorner.Y;
 734                         s32 rowh = row_rect.getHeight();
 735                         if (imgh < rowh)
 736                                 dest_pos.Y += (rowh - imgh) / 2;
 737                         else
 738                                 source_rect.LowerRightCorner.Y = rowh;
 739
 740                         video::SColor color(255, 255, 255, 255);
 741
 742                         driver->draw2DImage(image, dest_pos, source_rect,
 743                                         &client_clip, color, true);
 744                 }
 745         }
 746 }
 747
 748 bool GUITable::OnEvent(const SEvent &event)
 749 {
 750         if (!isEnabled())
 751                 return IGUIElement::OnEvent(event);
 752
 753         if (event.EventType == EET_KEY_INPUT_EVENT) {
 754                 if (event.KeyInput.PressedDown && (
 755                                 event.KeyInput.Key == KEY_DOWN ||
 756                                 event.KeyInput.Key == KEY_UP   ||
 757                                 event.KeyInput.Key == KEY_HOME ||
 758                                 event.KeyInput.Key == KEY_END  ||
 759                                 event.KeyInput.Key == KEY_NEXT ||
 760                                 event.KeyInput.Key == KEY_PRIOR)) {
 761                         s32 offset = 0;
 762                         switch (event.KeyInput.Key) {
 763                                 case KEY_DOWN:
 764                                         offset = 1;
 765                                         break;
 766                                 case KEY_UP:
 767                                         offset = -1;
 768                                         break;
 769                                 case KEY_HOME:
 770                                         offset = - (s32) m_visible_rows.size();
 771                                         break;
 772                                 case KEY_END:
 773                                         offset = m_visible_rows.size();
 774                                         break;
 775                                 case KEY_NEXT:
 776                                         offset = AbsoluteRect.getHeight() / m_rowheight;
 777                                         break;
 778                                 case KEY_PRIOR:
 779                                         offset = - (s32) (AbsoluteRect.getHeight() / m_rowheight);
 780                                         break;
 781                                 default:
 782                                         break;
 783                         }
 784                         s32 old_selected = m_selected;
 785                         s32 rowcount = m_visible_rows.size();
 786                         if (rowcount != 0) {
 787                                 m_selected = rangelim(m_selected + offset, 0, rowcount-1);
 788                                 autoScroll();
 789                         }
 790
 791                         if (m_selected != old_selected)
 792                                 sendTableEvent(0, false);
 793
 794                         return true;
 795                 }
 796                 else if (event.KeyInput.PressedDown && (
 797                                 event.KeyInput.Key == KEY_LEFT ||
 798                                 event.KeyInput.Key == KEY_RIGHT)) {
 799                         // Open/close subtree via keyboard
 800                         if (m_selected >= 0) {
 801                                 int dir = event.KeyInput.Key == KEY_LEFT ? -1 : 1;
 802                                 toggleVisibleTree(m_selected, dir, true);
 803                         }
 804                         return true;
 805                 }
 806                 else if (!event.KeyInput.PressedDown && (
 807                                 event.KeyInput.Key == KEY_RETURN ||
 808                                 event.KeyInput.Key == KEY_SPACE)) {
 809                         sendTableEvent(0, true);
 810                         return true;
 811                 }
 812                 else if (event.KeyInput.Key == KEY_ESCAPE ||
 813                                 event.KeyInput.Key == KEY_SPACE) {
 814                         // pass to parent
 815                 }
 816                 else if (event.KeyInput.PressedDown && event.KeyInput.Char) {
 817                         // change selection based on text as it is typed
 818                         u64 now = porting::getTimeMs();
 819                         if (now - m_keynav_time >= 500)
 820                                 m_keynav_buffer = L"";
 821                         m_keynav_time = now;
 822
 823                         // add to key buffer if not a key repeat
 824                         if (!(m_keynav_buffer.size() == 1 &&
 825                                         m_keynav_buffer[0] == event.KeyInput.Char)) {
 826                                 m_keynav_buffer.append(event.KeyInput.Char);
 827                         }
 828
 829                         // find the selected item, starting at the current selection
 830                         // don't change selection if the key buffer matches the current item
 831                         s32 old_selected = m_selected;
 832                         s32 start = MYMAX(m_selected, 0);
 833                         s32 rowcount = m_visible_rows.size();
 834                         for (s32 k = 1; k < rowcount; ++k) {
 835                                 s32 current = start + k;
 836                                 if (current >= rowcount)
 837                                         current -= rowcount;
 838                                 if (doesRowStartWith(getRow(current), m_keynav_buffer)) {
 839                                         m_selected = current;
 840                                         break;
 841                                 }
 842                         }
 843                         autoScroll();
 844                         if (m_selected != old_selected)
 845                                 sendTableEvent(0, false);
 846
 847                         return true;
 848                 }
 849         }
 850         if (event.EventType == EET_MOUSE_INPUT_EVENT) {
 851                 core::position2d<s32> p(event.MouseInput.X, event.MouseInput.Y);
 852
 853                 if (event.MouseInput.Event == EMIE_MOUSE_WHEEL) {
 854                         m_scrollbar->setPos(m_scrollbar->getPos() +
 855                                         (event.MouseInput.Wheel < 0 ? -3 : 3) *
 856                                         - (s32) m_rowheight / 2);
 857                         return true;
 858                 }
 859
 860                 // Find hovered row and cell
 861                 bool really_hovering = false;
 862                 s32 row_i = getRowAt(p.Y, really_hovering);
 863                 const Cell *cell = NULL;
 864                 if (really_hovering) {
 865                         s32 cell_j = getCellAt(p.X, row_i);
 866                         if (cell_j >= 0)
 867                                 cell = &(getRow(row_i)->cells[cell_j]);
 868                 }
 869
 870                 // Update tooltip
 871                 setToolTipText(cell ? m_strings[cell->tooltip_index].c_str() : L"");
 872
 873                 // Fix for #1567/#1806:
 874                 // IGUIScrollBar passes double click events to its parent,
 875                 // which we don't want. Detect this case and discard the event
 876                 if (event.MouseInput.Event != EMIE_MOUSE_MOVED &&
 877                                 m_scrollbar->isVisible() &&
 878                                 m_scrollbar->isPointInside(p))
 879                         return true;
 880
 881                 if (event.MouseInput.isLeftPressed() &&
 882                                 (isPointInside(p) ||
 883                                  event.MouseInput.Event == EMIE_MOUSE_MOVED)) {
 884                         s32 sel_column = 0;
 885                         bool sel_doubleclick = (event.MouseInput.Event
 886                                         == EMIE_LMOUSE_DOUBLE_CLICK);
 887                         bool plusminus_clicked = false;
 888
 889                         // For certain events (left click), report column
 890                         // Also open/close subtrees when the +/- is clicked
 891                         if (cell && (
 892                                         event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN ||
 893                                         event.MouseInput.Event == EMIE_LMOUSE_DOUBLE_CLICK ||
 894                                         event.MouseInput.Event == EMIE_LMOUSE_TRIPLE_CLICK)) {
 895                                 sel_column = cell->reported_column;
 896                                 if (cell->content_type == COLUMN_TYPE_TREE)
 897                                         plusminus_clicked = true;
 898                         }
 899
 900                         if (plusminus_clicked) {
 901                                 if (event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN) {
 902                                         toggleVisibleTree(row_i, 0, false);
 903                                 }
 904                         }
 905                         else {
 906                                 // Normal selection
 907                                 s32 old_selected = m_selected;
 908                                 m_selected = row_i;
 909                                 autoScroll();
 910
 911                                 if (m_selected != old_selected ||
 912                                                 sel_column >= 1 ||
 913                                                 sel_doubleclick) {
 914                                         sendTableEvent(sel_column, sel_doubleclick);
 915                                 }
 916
 917                                 // Treeview: double click opens/closes trees
 918                                 if (m_has_tree_column && sel_doubleclick) {
 919                                         toggleVisibleTree(m_selected, 0, false);
 920                                 }
 921                         }
 922                 }
 923                 return true;
 924         }
 925         if (event.EventType == EET_GUI_EVENT &&
 926                         event.GUIEvent.EventType == gui::EGET_SCROLL_BAR_CHANGED &&
 927                         event.GUIEvent.Caller == m_scrollbar) {
 928                 // Don't pass events from our scrollbar to the parent
 929                 return true;
 930         }
 931
 932         return IGUIElement::OnEvent(event);
 933 }
 934
 935 /******************************************************************************/
 936 /* GUITable helper functions                                                  */
 937 /******************************************************************************/
 938
 939 s32 GUITable::allocString(const std::string &text)
 940 {
 941         std::map<std::string, s32>::iterator it = m_alloc_strings.find(text);
 942         if (it == m_alloc_strings.end()) {
 943                 s32 id = m_strings.size();
 944                 std::wstring wtext = utf8_to_wide(text);
 945                 m_strings.push_back(core::stringw(wtext.c_str()));
 946                 m_alloc_strings.insert(std::make_pair(text, id));
 947                 return id;
 948         }
 949         else {
 950                 return it->second;
 951         }
 952 }
 953
 954 s32 GUITable::allocImage(const std::string &imagename)
 955 {
 956         std::map<std::string, s32>::iterator it = m_alloc_images.find(imagename);
 957         if (it == m_alloc_images.end()) {
 958                 s32 id = m_images.size();
 959                 m_images.push_back(m_tsrc->getTexture(imagename));
 960                 m_alloc_images.insert(std::make_pair(imagename, id));
 961                 return id;
 962         }
 963         else {
 964                 return it->second;
 965         }
 966 }
 967
 968 void GUITable::allocationComplete()
 969 {
 970         // Called when done with creating rows and cells from table data,
 971         // i.e. when allocString and allocImage won't be called anymore
 972         m_alloc_strings.clear();
 973         m_alloc_images.clear();
 974 }
 975
 976 const GUITable::Row* GUITable::getRow(s32 i) const
 977 {
 978         if (i >= 0 && i < (s32) m_visible_rows.size())
 979                 return &m_rows[m_visible_rows[i]];
 980         else
 981                 return NULL;
 982 }
 983
 984 bool GUITable::doesRowStartWith(const Row *row, const core::stringw &str) const
 985 {
 986         if (row == NULL)
 987                 return false;
 988
 989         for (s32 j = 0; j < row->cellcount; ++j) {
 990                 Cell *cell = &row->cells[j];
 991                 if (cell->content_type == COLUMN_TYPE_TEXT) {
 992                         const core::stringw &cellstr = m_strings[cell->content_index];
 993                         if (cellstr.size() >= str.size() &&
 994                                         str.equals_ignore_case(cellstr.subString(0, str.size())))
 995                                 return true;
 996                 }
 997         }
 998         return false;
 999 }
1000
1001 s32 GUITable::getRowAt(s32 y, bool &really_hovering) const
1002 {
1003         really_hovering = false;
1004
1005         s32 rowcount = m_visible_rows.size();
1006         if (rowcount == 0)
1007                 return -1;
1008
1009         // Use arithmetic to find row
1010         s32 rel_y = y - AbsoluteRect.UpperLeftCorner.Y - 1;
1011         s32 i = (rel_y + m_scrollbar->getPos()) / m_rowheight;
1012
1013         if (i >= 0 && i < rowcount) {
1014                 really_hovering = true;
1015                 return i;
1016         }
1017         else if (i < 0)
1018                 return 0;
1019         else
1020                 return rowcount - 1;
1021
1022 }
1023
1024 s32 GUITable::getCellAt(s32 x, s32 row_i) const
1025 {
1026         const Row *row = getRow(row_i);
1027         if (row == NULL)
1028                 return -1;
1029
1030         // Use binary search to find cell in row
1031         s32 rel_x = x - AbsoluteRect.UpperLeftCorner.X - 1;
1032         s32 jmin = 0;
1033         s32 jmax = row->cellcount - 1;
1034         while (jmin < jmax) {
1035                 s32 pivot = jmin + (jmax - jmin) / 2;
1036                 assert(pivot >= 0 && pivot < row->cellcount);
1037                 const Cell *cell = &row->cells[pivot];
1038
1039                 if (rel_x >= cell->xmin && rel_x <= cell->xmax)
1040                         return pivot;
1041                 else if (rel_x < cell->xmin)
1042                         jmax = pivot - 1;
1043                 else
1044                         jmin = pivot + 1;
1045         }
1046
1047         if (jmin >= 0 && jmin < row->cellcount &&
1048                         rel_x >= row->cells[jmin].xmin &&
1049                         rel_x <= row->cells[jmin].xmax)
1050                 return jmin;
1051         else
1052                 return -1;
1053 }
1054
1055 void GUITable::autoScroll()
1056 {
1057         if (m_selected >= 0) {
1058                 s32 pos = m_scrollbar->getPos();
1059                 s32 maxpos = m_selected * m_rowheight;
1060                 s32 minpos = maxpos - (AbsoluteRect.getHeight() - m_rowheight);
1061                 if (pos > maxpos)
1062                         m_scrollbar->setPos(maxpos);
1063                 else if (pos < minpos)
1064                         m_scrollbar->setPos(minpos);
1065         }
1066 }
1067
1068 void GUITable::updateScrollBar()
1069 {
1070         s32 totalheight = m_rowheight * m_visible_rows.size();
1071         s32 scrollmax = MYMAX(0, totalheight - AbsoluteRect.getHeight());
1072         m_scrollbar->setVisible(scrollmax > 0);
1073         m_scrollbar->setMax(scrollmax);
1074         m_scrollbar->setSmallStep(m_rowheight);
1075         m_scrollbar->setLargeStep(2 * m_rowheight);
1076 }
1077
1078 void GUITable::sendTableEvent(s32 column, bool doubleclick)
1079 {
1080         m_sel_column = column;
1081         m_sel_doubleclick = doubleclick;
1082         if (Parent) {
1083                 SEvent e;
1084                 memset(&e, 0, sizeof e);
1085                 e.EventType = EET_GUI_EVENT;
1086                 e.GUIEvent.Caller = this;
1087                 e.GUIEvent.Element = 0;
1088                 e.GUIEvent.EventType = gui::EGET_TABLE_CHANGED;
1089                 Parent->OnEvent(e);
1090         }
1091 }
1092
1093 void GUITable::getOpenedTrees(std::set<s32> &opened_trees) const
1094 {
1095         opened_trees.clear();
1096         s32 rowcount = m_rows.size();
1097         for (s32 i = 0; i < rowcount - 1; ++i) {
1098                 if (m_rows[i].indent < m_rows[i+1].indent &&
1099                                 m_rows[i+1].visible_index != -2)
1100                         opened_trees.insert(i);
1101         }
1102 }
1103
1104 void GUITable::setOpenedTrees(const std::set<s32> &opened_trees)
1105 {
1106         s32 old_selected = -1;
1107         if (m_selected >= 0)
1108                 old_selected = m_visible_rows[m_selected];
1109
1110         std::vector<s32> parents;
1111         std::vector<s32> closed_parents;
1112
1113         m_visible_rows.clear();
1114
1115         for (size_t i = 0; i < m_rows.size(); ++i) {
1116                 Row *row = &m_rows[i];
1117
1118                 // Update list of ancestors
1119                 while (!parents.empty() && m_rows[parents.back()].indent >= row->indent)
1120                         parents.pop_back();
1121                 while (!closed_parents.empty() &&
1122                                 m_rows[closed_parents.back()].indent >= row->indent)
1123                         closed_parents.pop_back();
1124
1125                 assert(closed_parents.size() <= parents.size());
1126
1127                 if (closed_parents.empty()) {
1128                         // Visible row
1129                         row->visible_index = m_visible_rows.size();
1130                         m_visible_rows.push_back(i);
1131                 }
1132                 else if (parents.back() == closed_parents.back()) {
1133                         // Invisible row, direct parent is closed
1134                         row->visible_index = -2;
1135                 }
1136                 else {
1137                         // Invisible row, direct parent is open, some ancestor is closed
1138                         row->visible_index = -1;
1139                 }
1140
1141                 // If not a leaf, add to parents list
1142                 if (i < m_rows.size()-1 && row->indent < m_rows[i+1].indent) {
1143                         parents.push_back(i);
1144
1145                         s32 content_index = 0; // "-", open
1146                         if (opened_trees.count(i) == 0) {
1147                                 closed_parents.push_back(i);
1148                                 content_index = 1; // "+", closed
1149                         }
1150
1151                         // Update all cells of type "tree"
1152                         for (s32 j = 0; j < row->cellcount; ++j)
1153                                 if (row->cells[j].content_type == COLUMN_TYPE_TREE)
1154                                         row->cells[j].content_index = content_index;
1155                 }
1156         }
1157
1158         updateScrollBar();
1159
1160         // m_selected must be updated since it is a visible row index
1161         if (old_selected >= 0)
1162                 m_selected = m_rows[old_selected].visible_index;
1163 }
1164
1165 void GUITable::openTree(s32 to_open)
1166 {
1167         std::set<s32> opened_trees;
1168         getOpenedTrees(opened_trees);
1169         opened_trees.insert(to_open);
1170         setOpenedTrees(opened_trees);
1171 }
1172
1173 void GUITable::closeTree(s32 to_close)
1174 {
1175         std::set<s32> opened_trees;
1176         getOpenedTrees(opened_trees);
1177         opened_trees.erase(to_close);
1178         setOpenedTrees(opened_trees);
1179 }
1180
1181 // The following function takes a visible row index (hidden rows skipped)
1182 // dir: -1 = left (close), 0 = auto (toggle), 1 = right (open)
1183 void GUITable::toggleVisibleTree(s32 row_i, int dir, bool move_selection)
1184 {
1185         // Check if the chosen tree is currently open
1186         const Row *row = getRow(row_i);
1187         if (row == NULL)
1188                 return;
1189
1190         bool was_open = false;
1191         for (s32 j = 0; j < row->cellcount; ++j) {
1192                 if (row->cells[j].content_type == COLUMN_TYPE_TREE) {
1193                         was_open = row->cells[j].content_index == 0;
1194                         break;
1195                 }
1196         }
1197
1198         // Check if the chosen tree should be opened
1199         bool do_open = !was_open;
1200         if (dir < 0)
1201                 do_open = false;
1202         else if (dir > 0)
1203                 do_open = true;
1204
1205         // Close or open the tree; the heavy lifting is done by setOpenedTrees
1206         if (was_open && !do_open)
1207                 closeTree(m_visible_rows[row_i]);
1208         else if (!was_open && do_open)
1209                 openTree(m_visible_rows[row_i]);
1210
1211         // Change selected row if requested by caller,
1212         // this is useful for keyboard navigation
1213         if (move_selection) {
1214                 s32 sel = row_i;
1215                 if (was_open && do_open) {
1216                         // Move selection to first child
1217                         const Row *maybe_child = getRow(sel + 1);
1218                         if (maybe_child && maybe_child->indent > row->indent)
1219                                 sel++;
1220                 }
1221                 else if (!was_open && !do_open) {
1222                         // Move selection to parent
1223                         assert(getRow(sel) != NULL);
1224                         while (sel > 0 && getRow(sel - 1)->indent >= row->indent)
1225                                 sel--;
1226                         sel--;
1227                         if (sel < 0)  // was root already selected?
1228                                 sel = row_i;
1229                 }
1230                 if (sel != m_selected) {
1231                         m_selected = sel;
1232                         autoScroll();
1233                         sendTableEvent(0, false);
1234                 }
1235         }
1236 }
1237
1238 void GUITable::alignContent(Cell *cell, s32 xmax, s32 content_width, s32 align)
1239 {
1240         // requires that cell.xmin, cell.xmax are properly set
1241         // align = 0: left aligned, 1: centered, 2: right aligned, 3: inline
1242         if (align == 0) {
1243                 cell->xpos = cell->xmin;
1244                 cell->xmax = xmax;
1245         }
1246         else if (align == 1) {
1247                 cell->xpos = (cell->xmin + xmax - content_width) / 2;
1248                 cell->xmax = xmax;
1249         }
1250         else if (align == 2) {
1251                 cell->xpos = xmax - content_width;
1252                 cell->xmax = xmax;
1253         }
1254         else {
1255                 // inline alignment: the cells of the column don't have an aligned
1256                 // right border, the right border of each cell depends on the content
1257                 cell->xpos = cell->xmin;
1258                 cell->xmax = cell->xmin + content_width;
1259         }
1260 }