src/gui/guiChatConsole.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 #include "IrrCompileConfig.h"
  21 #include "guiChatConsole.h"
  22 #include "chat.h"
  23 #include "client/client.h"
  24 #include "debug.h"
  25 #include "gettime.h"
  26 #include "client/keycode.h"
  27 #include "settings.h"
  28 #include "porting.h"
  29 #include "client/tile.h"
  30 #include "client/fontengine.h"
  31 #include "log.h"
  32 #include "gettext.h"
  33 #include <string>
  34
  35 #if USE_FREETYPE
  36         #include "irrlicht_changes/CGUITTFont.h"
  37 #endif
  38
  39 inline u32 clamp_u8(s32 value)
  40 {
  41         return (u32) MYMIN(MYMAX(value, 0), 255);
  42 }
  43
  44 inline bool isInCtrlKeys(const irr::EKEY_CODE& kc)
  45 {
  46         return kc == KEY_LCONTROL || kc == KEY_RCONTROL || kc == KEY_CONTROL;
  47 }
  48
  49 GUIChatConsole::GUIChatConsole(
  50                 gui::IGUIEnvironment* env,
  51                 gui::IGUIElement* parent,
  52                 s32 id,
  53                 ChatBackend* backend,
  54                 Client* client,
  55                 IMenuManager* menumgr
  56 ):
  57         IGUIElement(gui::EGUIET_ELEMENT, env, parent, id,
  58                         core::rect<s32>(0,0,100,100)),
  59         m_chat_backend(backend),
  60         m_client(client),
  61         m_menumgr(menumgr),
  62         m_animate_time_old(porting::getTimeMs())
  63 {
  64         // load background settings
  65         s32 console_alpha = g_settings->getS32("console_alpha");
  66         m_background_color.setAlpha(clamp_u8(console_alpha));
  67
  68         // load the background texture depending on settings
  69         ITextureSource *tsrc = client->getTextureSource();
  70         if (tsrc->isKnownSourceImage("background_chat.jpg")) {
  71                 m_background = tsrc->getTexture("background_chat.jpg");
  72                 m_background_color.setRed(255);
  73                 m_background_color.setGreen(255);
  74                 m_background_color.setBlue(255);
  75         } else {
  76                 v3f console_color = g_settings->getV3F("console_color");
  77                 m_background_color.setRed(clamp_u8(myround(console_color.X)));
  78                 m_background_color.setGreen(clamp_u8(myround(console_color.Y)));
  79                 m_background_color.setBlue(clamp_u8(myround(console_color.Z)));
  80         }
  81
  82         u16 chat_font_size = g_settings->getU16("chat_font_size");
  83         m_font = g_fontengine->getFont(chat_font_size != 0 ?
  84                 chat_font_size : FONT_SIZE_UNSPECIFIED, FM_Mono);
  85
  86         if (!m_font) {
  87                 errorstream << "GUIChatConsole: Unable to load mono font" << std::endl;
  88         } else {
  89                 core::dimension2d<u32> dim = m_font->getDimension(L"M");
  90                 m_fontsize = v2u32(dim.Width, dim.Height);
  91                 m_font->grab();
  92         }
  93         m_fontsize.X = MYMAX(m_fontsize.X, 1);
  94         m_fontsize.Y = MYMAX(m_fontsize.Y, 1);
  95
  96         // set default cursor options
  97         setCursor(true, true, 2.0, 0.1);
  98
  99         // track ctrl keys for mouse event
 100         m_is_ctrl_down = false;
 101         m_cache_clickable_chat_weblinks = g_settings->getBool("clickable_chat_weblinks");
 102 }
 103
 104 GUIChatConsole::~GUIChatConsole()
 105 {
 106         if (m_font)
 107                 m_font->drop();
 108 }
 109
 110 void GUIChatConsole::openConsole(f32 scale)
 111 {
 112         assert(scale > 0.0f && scale <= 1.0f);
 113
 114         m_open = true;
 115         m_desired_height_fraction = scale;
 116         m_desired_height = scale * m_screensize.Y;
 117         reformatConsole();
 118         m_animate_time_old = porting::getTimeMs();
 119         IGUIElement::setVisible(true);
 120         Environment->setFocus(this);
 121         m_menumgr->createdMenu(this);
 122 }
 123
 124 bool GUIChatConsole::isOpen() const
 125 {
 126         return m_open;
 127 }
 128
 129 bool GUIChatConsole::isOpenInhibited() const
 130 {
 131         return m_open_inhibited > 0;
 132 }
 133
 134 void GUIChatConsole::closeConsole()
 135 {
 136         m_open = false;
 137         Environment->removeFocus(this);
 138         m_menumgr->deletingMenu(this);
 139 }
 140
 141 void GUIChatConsole::closeConsoleAtOnce()
 142 {
 143         closeConsole();
 144         m_height = 0;
 145         recalculateConsolePosition();
 146 }
 147
 148 void GUIChatConsole::replaceAndAddToHistory(const std::wstring &line)
 149 {
 150         ChatPrompt& prompt = m_chat_backend->getPrompt();
 151         prompt.addToHistory(prompt.getLine());
 152         prompt.replace(line);
 153 }
 154
 155
 156 void GUIChatConsole::setCursor(
 157         bool visible, bool blinking, f32 blink_speed, f32 relative_height)
 158 {
 159         if (visible)
 160         {
 161                 if (blinking)
 162                 {
 163                         // leave m_cursor_blink unchanged
 164                         m_cursor_blink_speed = blink_speed;
 165                 }
 166                 else
 167                 {
 168                         m_cursor_blink = 0x8000;  // on
 169                         m_cursor_blink_speed = 0.0;
 170                 }
 171         }
 172         else
 173         {
 174                 m_cursor_blink = 0;  // off
 175                 m_cursor_blink_speed = 0.0;
 176         }
 177         m_cursor_height = relative_height;
 178 }
 179
 180 void GUIChatConsole::draw()
 181 {
 182         if(!IsVisible)
 183                 return;
 184
 185         video::IVideoDriver* driver = Environment->getVideoDriver();
 186
 187         // Check screen size
 188         v2u32 screensize = driver->getScreenSize();
 189         if (screensize != m_screensize)
 190         {
 191                 // screen size has changed
 192                 // scale current console height to new window size
 193                 if (m_screensize.Y != 0)
 194                         m_height = m_height * screensize.Y / m_screensize.Y;
 195                 m_screensize = screensize;
 196                 m_desired_height = m_desired_height_fraction * m_screensize.Y;
 197                 reformatConsole();
 198         }
 199
 200         // Animation
 201         u64 now = porting::getTimeMs();
 202         animate(now - m_animate_time_old);
 203         m_animate_time_old = now;
 204
 205         // Draw console elements if visible
 206         if (m_height > 0)
 207         {
 208                 drawBackground();
 209                 drawText();
 210                 drawPrompt();
 211         }
 212
 213         gui::IGUIElement::draw();
 214 }
 215
 216 void GUIChatConsole::reformatConsole()
 217 {
 218         s32 cols = m_screensize.X / m_fontsize.X - 2; // make room for a margin (looks better)
 219         s32 rows = m_desired_height / m_fontsize.Y - 1; // make room for the input prompt
 220         if (cols <= 0 || rows <= 0)
 221                 cols = rows = 0;
 222         recalculateConsolePosition();
 223         m_chat_backend->reformat(cols, rows);
 224 }
 225
 226 void GUIChatConsole::recalculateConsolePosition()
 227 {
 228         core::rect<s32> rect(0, 0, m_screensize.X, m_height);
 229         DesiredRect = rect;
 230         recalculateAbsolutePosition(false);
 231 }
 232
 233 void GUIChatConsole::animate(u32 msec)
 234 {
 235         // animate the console height
 236         s32 goal = m_open ? m_desired_height : 0;
 237
 238         // Set invisible if close animation finished (reset by openConsole)
 239         // This function (animate()) is never called once its visibility becomes false so do not
 240         //              actually set visible to false before the inhibited period is over
 241         if (!m_open && m_height == 0 && m_open_inhibited == 0)
 242                 IGUIElement::setVisible(false);
 243
 244         if (m_height != goal)
 245         {
 246                 s32 max_change = msec * m_screensize.Y * (m_height_speed / 1000.0);
 247                 if (max_change == 0)
 248                         max_change = 1;
 249
 250                 if (m_height < goal)
 251                 {
 252                         // increase height
 253                         if (m_height + max_change < goal)
 254                                 m_height += max_change;
 255                         else
 256                                 m_height = goal;
 257                 }
 258                 else
 259                 {
 260                         // decrease height
 261                         if (m_height > goal + max_change)
 262                                 m_height -= max_change;
 263                         else
 264                                 m_height = goal;
 265                 }
 266
 267                 recalculateConsolePosition();
 268         }
 269
 270         // blink the cursor
 271         if (m_cursor_blink_speed != 0.0)
 272         {
 273                 u32 blink_increase = 0x10000 * msec * (m_cursor_blink_speed / 1000.0);
 274                 if (blink_increase == 0)
 275                         blink_increase = 1;
 276                 m_cursor_blink = ((m_cursor_blink + blink_increase) & 0xffff);
 277         }
 278
 279         // decrease open inhibit counter
 280         if (m_open_inhibited > msec)
 281                 m_open_inhibited -= msec;
 282         else
 283                 m_open_inhibited = 0;
 284 }
 285
 286 void GUIChatConsole::drawBackground()
 287 {
 288         video::IVideoDriver* driver = Environment->getVideoDriver();
 289         if (m_background != NULL)
 290         {
 291                 core::rect<s32> sourcerect(0, -m_height, m_screensize.X, 0);
 292                 driver->draw2DImage(
 293                         m_background,
 294                         v2s32(0, 0),
 295                         sourcerect,
 296                         &AbsoluteClippingRect,
 297                         m_background_color,
 298                         false);
 299         }
 300         else
 301         {
 302                 driver->draw2DRectangle(
 303                         m_background_color,
 304                         core::rect<s32>(0, 0, m_screensize.X, m_height),
 305                         &AbsoluteClippingRect);
 306         }
 307 }
 308
 309 void GUIChatConsole::drawText()
 310 {
 311         if (m_font == NULL)
 312                 return;
 313
 314         ChatBuffer& buf = m_chat_backend->getConsoleBuffer();
 315         for (u32 row = 0; row < buf.getRows(); ++row)
 316         {
 317                 const ChatFormattedLine& line = buf.getFormattedLine(row);
 318                 if (line.fragments.empty())
 319                         continue;
 320
 321                 s32 line_height = m_fontsize.Y;
 322                 s32 y = row * line_height + m_height - m_desired_height;
 323                 if (y + line_height < 0)
 324                         continue;
 325
 326                 for (const ChatFormattedFragment &fragment : line.fragments) {
 327                         s32 x = (fragment.column + 1) * m_fontsize.X;
 328                         core::rect<s32> destrect(
 329                                 x, y, x + m_fontsize.X * fragment.text.size(), y + m_fontsize.Y);
 330
 331 #if USE_FREETYPE
 332                         if (m_font->getType() == irr::gui::EGFT_CUSTOM) {
 333                                 // Draw colored text if FreeType is enabled
 334                                 irr::gui::CGUITTFont *tmp = dynamic_cast<irr::gui::CGUITTFont *>(m_font);
 335                                 tmp->draw(
 336                                         fragment.text,
 337                                         destrect,
 338                                         false,
 339                                         false,
 340                                         &AbsoluteClippingRect);
 341                         } else
 342 #endif
 343                         {
 344                                 // Otherwise use standard text
 345                                 m_font->draw(
 346                                         fragment.text.c_str(),
 347                                         destrect,
 348                                         video::SColor(255, 255, 255, 255),
 349                                         false,
 350                                         false,
 351                                         &AbsoluteClippingRect);
 352                         }
 353                 }
 354         }
 355 }
 356
 357 void GUIChatConsole::drawPrompt()
 358 {
 359         if (!m_font)
 360                 return;
 361
 362         u32 row = m_chat_backend->getConsoleBuffer().getRows();
 363         s32 line_height = m_fontsize.Y;
 364         s32 y = row * line_height + m_height - m_desired_height;
 365
 366         ChatPrompt& prompt = m_chat_backend->getPrompt();
 367         std::wstring prompt_text = prompt.getVisiblePortion();
 368
 369         // FIXME Draw string at once, not character by character
 370         // That will only work with the cursor once we have a monospace font
 371         for (u32 i = 0; i < prompt_text.size(); ++i)
 372         {
 373                 wchar_t ws[2] = {prompt_text[i], 0};
 374                 s32 x = (1 + i) * m_fontsize.X;
 375                 core::rect<s32> destrect(
 376                         x, y, x + m_fontsize.X, y + m_fontsize.Y);
 377                 m_font->draw(
 378                         ws,
 379                         destrect,
 380                         video::SColor(255, 255, 255, 255),
 381                         false,
 382                         false,
 383                         &AbsoluteClippingRect);
 384         }
 385
 386         // Draw the cursor during on periods
 387         if ((m_cursor_blink & 0x8000) != 0)
 388         {
 389                 s32 cursor_pos = prompt.getVisibleCursorPosition();
 390                 if (cursor_pos >= 0)
 391                 {
 392                         s32 cursor_len = prompt.getCursorLength();
 393                         video::IVideoDriver* driver = Environment->getVideoDriver();
 394                         s32 x = (1 + cursor_pos) * m_fontsize.X;
 395                         core::rect<s32> destrect(
 396                                 x,
 397                                 y + m_fontsize.Y * (1.0 - m_cursor_height),
 398                                 x + m_fontsize.X * MYMAX(cursor_len, 1),
 399                                 y + m_fontsize.Y * (cursor_len ? m_cursor_height+1 : 1)
 400                         );
 401                         video::SColor cursor_color(255,255,255,255);
 402                         driver->draw2DRectangle(
 403                                 cursor_color,
 404                                 destrect,
 405                                 &AbsoluteClippingRect);
 406                 }
 407         }
 408
 409 }
 410
 411 bool GUIChatConsole::OnEvent(const SEvent& event)
 412 {
 413
 414         ChatPrompt &prompt = m_chat_backend->getPrompt();
 415
 416         if (event.EventType == EET_KEY_INPUT_EVENT && !event.KeyInput.PressedDown)
 417         {
 418                 // CTRL up
 419                 if (isInCtrlKeys(event.KeyInput.Key))
 420                 {
 421                         m_is_ctrl_down = false;
 422                 }
 423         }
 424         else if(event.EventType == EET_KEY_INPUT_EVENT && event.KeyInput.PressedDown)
 425         {
 426                 // CTRL down
 427                 if (isInCtrlKeys(event.KeyInput.Key)) {
 428                         m_is_ctrl_down = true;
 429                 }
 430
 431                 // Key input
 432                 if (KeyPress(event.KeyInput) == getKeySetting("keymap_console")) {
 433                         closeConsole();
 434
 435                         // inhibit open so the_game doesn't reopen immediately
 436                         m_open_inhibited = 50;
 437                         m_close_on_enter = false;
 438                         return true;
 439                 }
 440
 441                 if (event.KeyInput.Key == KEY_ESCAPE) {
 442                         closeConsoleAtOnce();
 443                         m_close_on_enter = false;
 444                         // inhibit open so the_game doesn't reopen immediately
 445                         m_open_inhibited = 1; // so the ESCAPE button doesn't open the "pause menu"
 446                         return true;
 447                 }
 448                 else if(event.KeyInput.Key == KEY_PRIOR)
 449                 {
 450                         m_chat_backend->scrollPageUp();
 451                         return true;
 452                 }
 453                 else if(event.KeyInput.Key == KEY_NEXT)
 454                 {
 455                         m_chat_backend->scrollPageDown();
 456                         return true;
 457                 }
 458                 else if(event.KeyInput.Key == KEY_RETURN)
 459                 {
 460                         prompt.addToHistory(prompt.getLine());
 461                         std::wstring text = prompt.replace(L"");
 462                         m_client->typeChatMessage(text);
 463                         if (m_close_on_enter) {
 464                                 closeConsoleAtOnce();
 465                                 m_close_on_enter = false;
 466                         }
 467                         return true;
 468                 }
 469                 else if(event.KeyInput.Key == KEY_UP)
 470                 {
 471                         // Up pressed
 472                         // Move back in history
 473                         prompt.historyPrev();
 474                         return true;
 475                 }
 476                 else if(event.KeyInput.Key == KEY_DOWN)
 477                 {
 478                         // Down pressed
 479                         // Move forward in history
 480                         prompt.historyNext();
 481                         return true;
 482                 }
 483                 else if(event.KeyInput.Key == KEY_LEFT || event.KeyInput.Key == KEY_RIGHT)
 484                 {
 485                         // Left/right pressed
 486                         // Move/select character/word to the left depending on control and shift keys
 487                         ChatPrompt::CursorOp op = event.KeyInput.Shift ?
 488                                 ChatPrompt::CURSOROP_SELECT :
 489                                 ChatPrompt::CURSOROP_MOVE;
 490                         ChatPrompt::CursorOpDir dir = event.KeyInput.Key == KEY_LEFT ?
 491                                 ChatPrompt::CURSOROP_DIR_LEFT :
 492                                 ChatPrompt::CURSOROP_DIR_RIGHT;
 493                         ChatPrompt::CursorOpScope scope = event.KeyInput.Control ?
 494                                 ChatPrompt::CURSOROP_SCOPE_WORD :
 495                                 ChatPrompt::CURSOROP_SCOPE_CHARACTER;
 496                         prompt.cursorOperation(op, dir, scope);
 497                         return true;
 498                 }
 499                 else if(event.KeyInput.Key == KEY_HOME)
 500                 {
 501                         // Home pressed
 502                         // move to beginning of line
 503                         prompt.cursorOperation(
 504                                 ChatPrompt::CURSOROP_MOVE,
 505                                 ChatPrompt::CURSOROP_DIR_LEFT,
 506                                 ChatPrompt::CURSOROP_SCOPE_LINE);
 507                         return true;
 508                 }
 509                 else if(event.KeyInput.Key == KEY_END)
 510                 {
 511                         // End pressed
 512                         // move to end of line
 513                         prompt.cursorOperation(
 514                                 ChatPrompt::CURSOROP_MOVE,
 515                                 ChatPrompt::CURSOROP_DIR_RIGHT,
 516                                 ChatPrompt::CURSOROP_SCOPE_LINE);
 517                         return true;
 518                 }
 519                 else if(event.KeyInput.Key == KEY_BACK)
 520                 {
 521                         // Backspace or Ctrl-Backspace pressed
 522                         // delete character / word to the left
 523                         ChatPrompt::CursorOpScope scope =
 524                                 event.KeyInput.Control ?
 525                                 ChatPrompt::CURSOROP_SCOPE_WORD :
 526                                 ChatPrompt::CURSOROP_SCOPE_CHARACTER;
 527                         prompt.cursorOperation(
 528                                 ChatPrompt::CURSOROP_DELETE,
 529                                 ChatPrompt::CURSOROP_DIR_LEFT,
 530                                 scope);
 531                         return true;
 532                 }
 533                 else if(event.KeyInput.Key == KEY_DELETE)
 534                 {
 535                         // Delete or Ctrl-Delete pressed
 536                         // delete character / word to the right
 537                         ChatPrompt::CursorOpScope scope =
 538                                 event.KeyInput.Control ?
 539                                 ChatPrompt::CURSOROP_SCOPE_WORD :
 540                                 ChatPrompt::CURSOROP_SCOPE_CHARACTER;
 541                         prompt.cursorOperation(
 542                                 ChatPrompt::CURSOROP_DELETE,
 543                                 ChatPrompt::CURSOROP_DIR_RIGHT,
 544                                 scope);
 545                         return true;
 546                 }
 547                 else if(event.KeyInput.Key == KEY_KEY_A && event.KeyInput.Control)
 548                 {
 549                         // Ctrl-A pressed
 550                         // Select all text
 551                         prompt.cursorOperation(
 552                                 ChatPrompt::CURSOROP_SELECT,
 553                                 ChatPrompt::CURSOROP_DIR_LEFT, // Ignored
 554                                 ChatPrompt::CURSOROP_SCOPE_LINE);
 555                         return true;
 556                 }
 557                 else if(event.KeyInput.Key == KEY_KEY_C && event.KeyInput.Control)
 558                 {
 559                         // Ctrl-C pressed
 560                         // Copy text to clipboard
 561                         if (prompt.getCursorLength() <= 0)
 562                                 return true;
 563                         std::wstring wselected = prompt.getSelection();
 564                         std::string selected = wide_to_utf8(wselected);
 565                         Environment->getOSOperator()->copyToClipboard(selected.c_str());
 566                         return true;
 567                 }
 568                 else if(event.KeyInput.Key == KEY_KEY_V && event.KeyInput.Control)
 569                 {
 570                         // Ctrl-V pressed
 571                         // paste text from clipboard
 572                         if (prompt.getCursorLength() > 0) {
 573                                 // Delete selected section of text
 574                                 prompt.cursorOperation(
 575                                         ChatPrompt::CURSOROP_DELETE,
 576                                         ChatPrompt::CURSOROP_DIR_LEFT, // Ignored
 577                                         ChatPrompt::CURSOROP_SCOPE_SELECTION);
 578                         }
 579                         IOSOperator *os_operator = Environment->getOSOperator();
 580                         const c8 *text = os_operator->getTextFromClipboard();
 581                         if (!text)
 582                                 return true;
 583                         std::basic_string<unsigned char> str((const unsigned char*)text);
 584                         prompt.input(std::wstring(str.begin(), str.end()));
 585                         return true;
 586                 }
 587                 else if(event.KeyInput.Key == KEY_KEY_X && event.KeyInput.Control)
 588                 {
 589                         // Ctrl-X pressed
 590                         // Cut text to clipboard
 591                         if (prompt.getCursorLength() <= 0)
 592                                 return true;
 593                         std::wstring wselected = prompt.getSelection();
 594                         std::string selected = wide_to_utf8(wselected);
 595                         Environment->getOSOperator()->copyToClipboard(selected.c_str());
 596                         prompt.cursorOperation(
 597                                 ChatPrompt::CURSOROP_DELETE,
 598                                 ChatPrompt::CURSOROP_DIR_LEFT, // Ignored
 599                                 ChatPrompt::CURSOROP_SCOPE_SELECTION);
 600                         return true;
 601                 }
 602                 else if(event.KeyInput.Key == KEY_KEY_U && event.KeyInput.Control)
 603                 {
 604                         // Ctrl-U pressed
 605                         // kill line to left end
 606                         prompt.cursorOperation(
 607                                 ChatPrompt::CURSOROP_DELETE,
 608                                 ChatPrompt::CURSOROP_DIR_LEFT,
 609                                 ChatPrompt::CURSOROP_SCOPE_LINE);
 610                         return true;
 611                 }
 612                 else if(event.KeyInput.Key == KEY_KEY_K && event.KeyInput.Control)
 613                 {
 614                         // Ctrl-K pressed
 615                         // kill line to right end
 616                         prompt.cursorOperation(
 617                                 ChatPrompt::CURSOROP_DELETE,
 618                                 ChatPrompt::CURSOROP_DIR_RIGHT,
 619                                 ChatPrompt::CURSOROP_SCOPE_LINE);
 620                         return true;
 621                 }
 622                 else if(event.KeyInput.Key == KEY_TAB)
 623                 {
 624                         // Tab or Shift-Tab pressed
 625                         // Nick completion
 626                         std::list<std::string> names = m_client->getConnectedPlayerNames();
 627                         bool backwards = event.KeyInput.Shift;
 628                         prompt.nickCompletion(names, backwards);
 629                         return true;
 630                 } else if (!iswcntrl(event.KeyInput.Char) && !event.KeyInput.Control) {
 631                         prompt.input(event.KeyInput.Char);
 632                         return true;
 633                 }
 634         }
 635         else if(event.EventType == EET_MOUSE_INPUT_EVENT)
 636         {
 637                 if (event.MouseInput.Event == EMIE_MOUSE_WHEEL)
 638                 {
 639                         s32 rows = myround(-3.0 * event.MouseInput.Wheel);
 640                         m_chat_backend->scroll(rows);
 641                 }
 642                 // Middle click or ctrl-click opens weblink, if enabled in config
 643                 else if(m_cache_clickable_chat_weblinks && (
 644                                 event.MouseInput.Event == EMIE_MMOUSE_PRESSED_DOWN ||
 645                                 (event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN && m_is_ctrl_down)
 646                                 ))
 647                 {
 648                         // If clicked within console output region
 649                         if (event.MouseInput.Y / m_fontsize.Y < (m_height / m_fontsize.Y) - 1 )
 650                         {
 651                                 // Translate pixel position to font position
 652                                 middleClick(event.MouseInput.X / m_fontsize.X, event.MouseInput.Y / m_fontsize.Y);
 653                         }
 654                 }
 655         }
 656 #if (IRRLICHT_VERSION_MT_REVISION >= 2)
 657         else if(event.EventType == EET_STRING_INPUT_EVENT)
 658         {
 659                 prompt.input(std::wstring(event.StringInput.Str->c_str()));
 660                 return true;
 661         }
 662 #endif
 663
 664         return Parent ? Parent->OnEvent(event) : false;
 665 }
 666
 667 void GUIChatConsole::setVisible(bool visible)
 668 {
 669         m_open = visible;
 670         IGUIElement::setVisible(visible);
 671         if (!visible) {
 672                 m_height = 0;
 673                 recalculateConsolePosition();
 674         }
 675 }
 676
 677 void GUIChatConsole::middleClick(s32 col, s32 row)
 678 {
 679         // Prevent accidental rapid clicking
 680         static u64 s_oldtime = 0;
 681         u64 newtime = porting::getTimeMs();
 682
 683         // 0.6 seconds should suffice
 684         if (newtime - s_oldtime < 600)
 685                 return;
 686         s_oldtime = newtime;
 687
 688         const std::vector<ChatFormattedFragment> &
 689                         frags = m_chat_backend->getConsoleBuffer().getFormattedLine(row).fragments;
 690         std::string weblink = ""; // from frag meta
 691
 692         // Identify targetted fragment, if exists
 693         int indx = frags.size() - 1;
 694         if (indx < 0) {
 695                 // Invalid row, frags is empty
 696                 return;
 697         }
 698         // Scan from right to left, offset by 1 font space because left margin
 699         while (indx > -1 && (u32)col < frags[indx].column + 1) {
 700                 --indx;
 701         }
 702         if (indx > -1) {
 703                 weblink = frags[indx].weblink;
 704                 // Note if(indx < 0) then a frag somehow had a corrupt column field
 705         }
 706
 707         /*
 708         // Debug help. Please keep this in case adjustments are made later.
 709         std::string ws;
 710         ws = "Middleclick: (" + std::to_string(col) + ',' + std::to_string(row) + ')' + " frags:";
 711         // show all frags <position>(<length>) for the clicked row
 712         for (u32 i=0;i<frags.size();++i) {
 713                 if (indx == int(i))
 714                         // tag the actual clicked frag
 715                         ws += '*';
 716                 ws += std::to_string(frags.at(i).column) + '('
 717                         + std::to_string(frags.at(i).text.size()) + "),";
 718         }
 719         actionstream << ws << std::endl;
 720         */
 721
 722         // User notification
 723         if (weblink.size() != 0) {
 724                 std::ostringstream msg;
 725                 msg << " * ";
 726                 if (porting::open_url(weblink)) {
 727                         msg << gettext("Opening webpage");
 728                 }
 729                 else {
 730                         msg << gettext("Failed to open webpage");
 731                 }
 732                 msg << " '" << weblink << "'";
 733                 msg.flush();
 734                 m_chat_backend->addUnparsedMessage(utf8_to_wide(msg.str()));
 735         }
 736 }