src/touchscreengui.cpp

   1 /*
   2 Copyright (C) 2014 sapier
   3
   4 This program is free software; you can redistribute it and/or modify
   5 it under the terms of the GNU Lesser General Public License as published by
   6 the Free Software Foundation; either version 2.1 of the License, or
   7 (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU Lesser General Public License for more details.
  13
  14 You should have received a copy of the GNU Lesser General Public License along
  15 with this program; if not, write to the Free Software Foundation, Inc.,
  16 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17 */
  18
  19 #include "touchscreengui.h"
  20 #include "irrlichttypes.h"
  21 #include "irr_v2d.h"
  22 #include "log.h"
  23 #include "keycode.h"
  24 #include "settings.h"
  25 #include "gettime.h"
  26 #include "util/numeric.h"
  27 #include "porting.h"
  28 #include "guiscalingfilter.h"
  29
  30 #include <iostream>
  31 #include <algorithm>
  32
  33 #include <ISceneCollisionManager.h>
  34
  35 // Very slow button repeat frequency (in seconds)
  36 #define SLOW_BUTTON_REPEAT      (1.0f)
  37
  38 using namespace irr::core;
  39
  40 extern Settings *g_settings;
  41
  42 const char** touchgui_button_imagenames = (const char*[]) {
  43         "up_arrow.png",
  44         "down_arrow.png",
  45         "left_arrow.png",
  46         "right_arrow.png",
  47         "inventory_btn.png",
  48         "drop_btn.png",
  49         "jump_btn.png",
  50         "down.png",
  51         "fly_btn.png",
  52         "noclip_btn.png",
  53         "fast_btn.png",
  54         "debug_btn.png",
  55         "chat_btn.png",
  56         "camera_btn.png",
  57         "rangeview_btn.png"
  58 };
  59
  60 static irr::EKEY_CODE id2keycode(touch_gui_button_id id)
  61 {
  62         std::string key = "";
  63         switch (id) {
  64                 case forward_id:
  65                         key = "forward";
  66                         break;
  67                 case left_id:
  68                         key = "left";
  69                         break;
  70                 case right_id:
  71                         key = "right";
  72                         break;
  73                 case backward_id:
  74                         key = "backward";
  75                         break;
  76                 case inventory_id:
  77                         key = "inventory";
  78                         break;
  79                 case drop_id:
  80                         key = "drop";
  81                         break;
  82                 case jump_id:
  83                         key = "jump";
  84                         break;
  85                 case crunch_id:
  86                         key = "sneak";
  87                         break;
  88                 case fly_id:
  89                         key = "freemove";
  90                         break;
  91                 case noclip_id:
  92                         key = "noclip";
  93                         break;
  94                 case fast_id:
  95                         key = "fastmove";
  96                         break;
  97                 case debug_id:
  98                         key = "toggle_debug";
  99                         break;
 100                 case chat_id:
 101                         key = "chat";
 102                         break;
 103                 case camera_id:
 104                         key = "camera_mode";
 105                         break;
 106                 case range_id:
 107                         key = "rangeselect";
 108                         break;
 109         }
 110         assert(key != "");
 111         return keyname_to_keycode(g_settings->get("keymap_" + key).c_str());
 112 }
 113
 114 TouchScreenGUI *g_touchscreengui;
 115
 116 TouchScreenGUI::TouchScreenGUI(IrrlichtDevice *device, IEventReceiver* receiver):
 117         m_device(device),
 118         m_guienv(device->getGUIEnvironment()),
 119         m_camera_yaw(0.0),
 120         m_camera_pitch(0.0),
 121         m_visible(false),
 122         m_move_id(-1),
 123         m_receiver(receiver)
 124 {
 125         for (unsigned int i=0; i < after_last_element_id; i++) {
 126                 m_buttons[i].guibutton     =  0;
 127                 m_buttons[i].repeatcounter = -1;
 128                 m_buttons[i].repeatdelay   = BUTTON_REPEAT_DELAY;
 129         }
 130
 131         m_screensize = m_device->getVideoDriver()->getScreenSize();
 132 }
 133
 134 void TouchScreenGUI::loadButtonTexture(button_info* btn, const char* path, rect<s32> button_rect)
 135 {
 136         unsigned int tid;
 137         video::ITexture *texture = guiScalingImageButton(m_device->getVideoDriver(),
 138                 m_texturesource->getTexture(path, &tid), button_rect.getWidth(), button_rect.getHeight());
 139         if (texture) {
 140                 btn->guibutton->setUseAlphaChannel(true);
 141                 if (g_settings->getBool("gui_scaling_filter")) {
 142                         rect<s32> txr_rect = rect<s32>(0, 0, button_rect.getWidth(), button_rect.getHeight());
 143                         btn->guibutton->setImage(texture, txr_rect);
 144                         btn->guibutton->setPressedImage(texture, txr_rect);
 145                         btn->guibutton->setScaleImage(false);
 146                 } else {
 147                         btn->guibutton->setImage(texture);
 148                         btn->guibutton->setPressedImage(texture);
 149                         btn->guibutton->setScaleImage(true);
 150                 }
 151                 btn->guibutton->setDrawBorder(false);
 152                 btn->guibutton->setText(L"");
 153                 }
 154 }
 155
 156 void TouchScreenGUI::initButton(touch_gui_button_id id, rect<s32> button_rect,
 157                 std::wstring caption, bool immediate_release, float repeat_delay)
 158 {
 159
 160         button_info* btn       = &m_buttons[id];
 161         btn->guibutton         = m_guienv->addButton(button_rect, 0, id, caption.c_str());
 162         btn->guibutton->grab();
 163         btn->repeatcounter     = -1;
 164         btn->repeatdelay       = repeat_delay;
 165         btn->keycode           = id2keycode(id);
 166         btn->immediate_release = immediate_release;
 167         btn->ids.clear();
 168
 169         loadButtonTexture(btn,touchgui_button_imagenames[id], button_rect);
 170 }
 171
 172 static int getMaxControlPadSize(float density) {
 173         return 200 * density * g_settings->getFloat("hud_scaling");
 174 }
 175
 176 void TouchScreenGUI::init(ISimpleTextureSource* tsrc, float density)
 177 {
 178         assert(tsrc != 0);
 179
 180         u32 control_pad_size =
 181                         MYMIN((2 * m_screensize.Y) / 3,getMaxControlPadSize(density));
 182
 183         u32 button_size      = control_pad_size / 3;
 184         m_visible            = true;
 185         m_texturesource      = tsrc;
 186         m_control_pad_rect   = rect<s32>(0, m_screensize.Y - 3 * button_size,
 187                         3 * button_size, m_screensize.Y);
 188         /*
 189         draw control pad
 190         0 1 2
 191         3 4 5
 192         for now only 0, 1, 2, and 4 are used
 193         */
 194         int number = 0;
 195         for (int y = 0; y < 2; ++y)
 196                 for (int x = 0; x < 3; ++x, ++number) {
 197                         rect<s32> button_rect(
 198                                         x * button_size, m_screensize.Y - button_size * (2 - y),
 199                                         (x + 1) * button_size, m_screensize.Y - button_size * (1 - y)
 200                         );
 201                         touch_gui_button_id id = after_last_element_id;
 202                         std::wstring caption;
 203                         switch (number) {
 204                         case 0:
 205                                 id = left_id;
 206                                 caption = L"<";
 207                                 break;
 208                         case 1:
 209                                 id = forward_id;
 210                                 caption = L"^";
 211                                 break;
 212                         case 2:
 213                                 id = right_id;
 214                                 caption = L">";
 215                                 break;
 216                         case 4:
 217                                 id = backward_id;
 218                                 caption = L"v";
 219                                 break;
 220                         }
 221                         if (id != after_last_element_id) {
 222                                 initButton(id, button_rect, caption, false);
 223                                 }
 224                 }
 225
 226         /* init inventory button */
 227         initButton(inventory_id,
 228                         rect<s32>(0, m_screensize.Y - (button_size/2),
 229                                         (button_size/2), m_screensize.Y), L"inv", true);
 230
 231         /* init drop button */
 232         initButton(drop_id,
 233                         rect<s32>(2.5*button_size, m_screensize.Y - (button_size/2),
 234                                         3*button_size, m_screensize.Y), L"drop", true);
 235
 236         /* init jump button */
 237         initButton(jump_id,
 238                         rect<s32>(m_screensize.X-(1.75*button_size),
 239                                         m_screensize.Y - (0.5*button_size),
 240                                         m_screensize.X-(0.25*button_size),
 241                                         m_screensize.Y),
 242                         L"x",false);
 243
 244         /* init crunch button */
 245         initButton(crunch_id,
 246                         rect<s32>(m_screensize.X-(3.25*button_size),
 247                                         m_screensize.Y - (0.5*button_size),
 248                                         m_screensize.X-(1.75*button_size),
 249                                         m_screensize.Y),
 250                         L"H",false);
 251
 252         /* init fly button */
 253         initButton(fly_id,
 254                         rect<s32>(m_screensize.X - (0.75*button_size),
 255                                         m_screensize.Y - (2.25*button_size),
 256                                         m_screensize.X, m_screensize.Y - (button_size*1.5)),
 257                         L"fly", false, SLOW_BUTTON_REPEAT);
 258
 259         /* init noclip button */
 260         initButton(noclip_id,
 261                         rect<s32>(m_screensize.X - (0.75*button_size), 2.25*button_size,
 262                                         m_screensize.X, 3*button_size),
 263                         L"clip", false, SLOW_BUTTON_REPEAT);
 264
 265         /* init fast button */
 266         initButton(fast_id,
 267                         rect<s32>(m_screensize.X - (0.75*button_size), 1.5*button_size,
 268                                         m_screensize.X, 2.25*button_size),
 269                         L"fast", false, SLOW_BUTTON_REPEAT);
 270
 271         /* init debug button */
 272         initButton(debug_id,
 273                         rect<s32>(m_screensize.X - (0.75*button_size), 0.75*button_size,
 274                                         m_screensize.X, 1.5*button_size),
 275                         L"dbg", false, SLOW_BUTTON_REPEAT);
 276
 277         /* init chat button */
 278         initButton(chat_id,
 279                         rect<s32>(m_screensize.X - (0.75*button_size), 0,
 280                                         m_screensize.X, 0.75*button_size),
 281                         L"Chat", true);
 282
 283         /* init camera button */
 284         initButton(camera_id,
 285                         rect<s32>(m_screensize.X - (1.5*button_size), 0,
 286                                         m_screensize.X - (0.75*button_size), 0.75*button_size),
 287                         L"cam", false, SLOW_BUTTON_REPEAT);
 288
 289         /* init rangeselect button */
 290         initButton(range_id,
 291                         rect<s32>(m_screensize.X - (2.25*button_size), 0,
 292                                         m_screensize.X - (1.5*button_size), 0.75*button_size),
 293                         L"far", false, SLOW_BUTTON_REPEAT);
 294 }
 295
 296 touch_gui_button_id TouchScreenGUI::getButtonID(s32 x, s32 y)
 297 {
 298         IGUIElement* rootguielement = m_guienv->getRootGUIElement();
 299
 300         if (rootguielement != NULL) {
 301                 gui::IGUIElement *element =
 302                                 rootguielement->getElementFromPoint(core::position2d<s32>(x,y));
 303
 304                 if (element) {
 305                         for (unsigned int i=0; i < after_last_element_id; i++) {
 306                                 if (element == m_buttons[i].guibutton) {
 307                                         return (touch_gui_button_id) i;
 308                                 }
 309                         }
 310                 }
 311         }
 312         return after_last_element_id;
 313 }
 314
 315 touch_gui_button_id TouchScreenGUI::getButtonID(int eventID)
 316 {
 317         for (unsigned int i=0; i < after_last_element_id; i++) {
 318                 button_info* btn = &m_buttons[i];
 319
 320                 std::vector<int>::iterator id =
 321                                 std::find(btn->ids.begin(),btn->ids.end(), eventID);
 322
 323                 if (id != btn->ids.end())
 324                         return (touch_gui_button_id) i;
 325         }
 326
 327         return after_last_element_id;
 328 }
 329
 330 bool TouchScreenGUI::isHUDButton(const SEvent &event)
 331 {
 332         // check if hud item is pressed
 333         for (std::map<int,rect<s32> >::iterator iter = m_hud_rects.begin();
 334                         iter != m_hud_rects.end(); iter++) {
 335                 if (iter->second.isPointInside(
 336                                 v2s32(event.TouchInput.X,
 337                                                 event.TouchInput.Y)
 338                         )) {
 339                         if ( iter->first < 8) {
 340                                 SEvent* translated = new SEvent();
 341                                 memset(translated,0,sizeof(SEvent));
 342                                 translated->EventType = irr::EET_KEY_INPUT_EVENT;
 343                                 translated->KeyInput.Key         = (irr::EKEY_CODE) (KEY_KEY_1 + iter->first);
 344                                 translated->KeyInput.Control     = false;
 345                                 translated->KeyInput.Shift       = false;
 346                                 translated->KeyInput.PressedDown = true;
 347                                 m_receiver->OnEvent(*translated);
 348                                 m_hud_ids[event.TouchInput.ID]   = translated->KeyInput.Key;
 349                                 delete translated;
 350                                 return true;
 351                         }
 352                 }
 353         }
 354         return false;
 355 }
 356
 357 bool TouchScreenGUI::isReleaseHUDButton(int eventID)
 358 {
 359         std::map<int,irr::EKEY_CODE>::iterator iter = m_hud_ids.find(eventID);
 360
 361         if (iter != m_hud_ids.end()) {
 362                 SEvent* translated = new SEvent();
 363                 memset(translated,0,sizeof(SEvent));
 364                 translated->EventType            = irr::EET_KEY_INPUT_EVENT;
 365                 translated->KeyInput.Key         = iter->second;
 366                 translated->KeyInput.PressedDown = false;
 367                 translated->KeyInput.Control     = false;
 368                 translated->KeyInput.Shift       = false;
 369                 m_receiver->OnEvent(*translated);
 370                 m_hud_ids.erase(iter);
 371                 delete translated;
 372                 return true;
 373         }
 374         return false;
 375 }
 376
 377 void TouchScreenGUI::ButtonEvent(touch_gui_button_id button,
 378                 int eventID, bool action)
 379 {
 380         button_info* btn = &m_buttons[button];
 381         SEvent* translated = new SEvent();
 382         memset(translated,0,sizeof(SEvent));
 383         translated->EventType            = irr::EET_KEY_INPUT_EVENT;
 384         translated->KeyInput.Key         = btn->keycode;
 385         translated->KeyInput.Control     = false;
 386         translated->KeyInput.Shift       = false;
 387         translated->KeyInput.Char        = 0;
 388
 389         /* add this event */
 390         if (action) {
 391                 assert(std::find(btn->ids.begin(),btn->ids.end(), eventID) == btn->ids.end());
 392
 393                 btn->ids.push_back(eventID);
 394
 395                 if (btn->ids.size() > 1) return;
 396
 397                 btn->repeatcounter = 0;
 398                 translated->KeyInput.PressedDown = true;
 399                 translated->KeyInput.Key = btn->keycode;
 400                 m_receiver->OnEvent(*translated);
 401         }
 402         /* remove event */
 403         if ((!action) || (btn->immediate_release)) {
 404
 405                 std::vector<int>::iterator pos =
 406                                 std::find(btn->ids.begin(),btn->ids.end(), eventID);
 407                 /* has to be in touch list */
 408                 assert(pos != btn->ids.end());
 409                 btn->ids.erase(pos);
 410
 411                 if (btn->ids.size() > 0)  { return; }
 412
 413                 translated->KeyInput.PressedDown = false;
 414                 btn->repeatcounter               = -1;
 415                 m_receiver->OnEvent(*translated);
 416         }
 417         delete translated;
 418 }
 419
 420 void TouchScreenGUI::translateEvent(const SEvent &event)
 421 {
 422         if (!m_visible) {
 423                 infostream << "TouchScreenGUI::translateEvent got event but not visible?!" << std::endl;
 424                 return;
 425         }
 426
 427         if (event.EventType != EET_TOUCH_INPUT_EVENT) {
 428                 return;
 429         }
 430
 431         if (event.TouchInput.Event == ETIE_PRESSED_DOWN) {
 432
 433                 /* add to own copy of eventlist ...
 434                  * android would provide this information but irrlicht guys don't
 435                  * wanna design a efficient interface
 436                  */
 437                 id_status toadd;
 438                 toadd.id = event.TouchInput.ID;
 439                 toadd.X  = event.TouchInput.X;
 440                 toadd.Y  = event.TouchInput.Y;
 441                 m_known_ids.push_back(toadd);
 442
 443                 int eventID = event.TouchInput.ID;
 444
 445                 touch_gui_button_id button =
 446                                 getButtonID(event.TouchInput.X, event.TouchInput.Y);
 447
 448                 /* handle button events */
 449                 if (button != after_last_element_id) {
 450                         ButtonEvent(button,eventID,true);
 451                 }
 452                 else if (isHUDButton(event))
 453                 {
 454                         /* already handled in isHUDButton() */
 455                 }
 456                 /* handle non button events */
 457                 else {
 458                         /* if we don't already have a moving point make this the moving one */
 459                         if (m_move_id == -1) {
 460                                 m_move_id                  = event.TouchInput.ID;
 461                                 m_move_has_really_moved    = false;
 462                                 m_move_downtime            = getTimeMs();
 463                                 m_move_downlocation        = v2s32(event.TouchInput.X, event.TouchInput.Y);
 464                                 m_move_sent_as_mouse_event = false;
 465                         }
 466                 }
 467
 468                 m_pointerpos[event.TouchInput.ID] = v2s32(event.TouchInput.X, event.TouchInput.Y);
 469         }
 470         else if (event.TouchInput.Event == ETIE_LEFT_UP) {
 471                 verbosestream << "Up event for pointerid: " << event.TouchInput.ID << std::endl;
 472
 473                 touch_gui_button_id button = getButtonID(event.TouchInput.ID);
 474
 475                 /* handle button events */
 476                 if (button != after_last_element_id) {
 477                         ButtonEvent(button,event.TouchInput.ID,false);
 478                 }
 479                 /* handle hud button events */
 480                 else if (isReleaseHUDButton(event.TouchInput.ID)) {
 481                         /* nothing to do here */
 482                 }
 483                 /* handle the point used for moving view */
 484                 else if (event.TouchInput.ID == m_move_id) {
 485                         m_move_id = -1;
 486
 487                         /* if this pointer issued a mouse event issue symmetric release here */
 488                         if (m_move_sent_as_mouse_event) {
 489                                 SEvent* translated = new SEvent;
 490                                 memset(translated,0,sizeof(SEvent));
 491                                 translated->EventType               = EET_MOUSE_INPUT_EVENT;
 492                                 translated->MouseInput.X            = m_move_downlocation.X;
 493                                 translated->MouseInput.Y            = m_move_downlocation.Y;
 494                                 translated->MouseInput.Shift        = false;
 495                                 translated->MouseInput.Control      = false;
 496                                 translated->MouseInput.ButtonStates = 0;
 497                                 translated->MouseInput.Event        = EMIE_LMOUSE_LEFT_UP;
 498                                 m_receiver->OnEvent(*translated);
 499                                 delete translated;
 500                         }
 501                         else {
 502                                 /* do double tap detection */
 503                                 doubleTapDetection();
 504                         }
 505                 }
 506                 else {
 507                         infostream
 508                                 << "TouchScreenGUI::translateEvent released unknown button: "
 509                                 << event.TouchInput.ID << std::endl;
 510                 }
 511
 512                 for (std::vector<id_status>::iterator iter = m_known_ids.begin();
 513                                 iter != m_known_ids.end(); iter++) {
 514                         if (iter->id == event.TouchInput.ID) {
 515                                 m_known_ids.erase(iter);
 516                                 break;
 517                         }
 518                 }
 519         }
 520         else {
 521                 assert(event.TouchInput.Event == ETIE_MOVED);
 522                 int move_idx = event.TouchInput.ID;
 523
 524                 if (m_pointerpos[event.TouchInput.ID] ==
 525                                 v2s32(event.TouchInput.X, event.TouchInput.Y)) {
 526                         return;
 527                 }
 528
 529                 if (m_move_id != -1) {
 530                         if ((event.TouchInput.ID == m_move_id) &&
 531                                 (!m_move_sent_as_mouse_event)) {
 532
 533                                 double distance = sqrt(
 534                                                 (m_pointerpos[event.TouchInput.ID].X - event.TouchInput.X) *
 535                                                 (m_pointerpos[event.TouchInput.ID].X - event.TouchInput.X) +
 536                                                 (m_pointerpos[event.TouchInput.ID].Y - event.TouchInput.Y) *
 537                                                 (m_pointerpos[event.TouchInput.ID].Y - event.TouchInput.Y));
 538
 539                                 if ((distance > g_settings->getU16("touchscreen_threshold")) ||
 540                                                 (m_move_has_really_moved)) {
 541                                         m_move_has_really_moved = true;
 542                                         s32 X = event.TouchInput.X;
 543                                         s32 Y = event.TouchInput.Y;
 544
 545                                         // update camera_yaw and camera_pitch
 546                                         s32 dx = X - m_pointerpos[event.TouchInput.ID].X;
 547                                         s32 dy = Y - m_pointerpos[event.TouchInput.ID].Y;
 548
 549                                         /* adapt to similar behaviour as pc screen */
 550                                         double d         = g_settings->getFloat("mouse_sensitivity") *4;
 551                                         double old_yaw   = m_camera_yaw;
 552                                         double old_pitch = m_camera_pitch;
 553
 554                                         m_camera_yaw   -= dx * d;
 555                                         m_camera_pitch  = MYMIN(MYMAX( m_camera_pitch + (dy * d),-180),180);
 556
 557                                         while (m_camera_yaw < 0)
 558                                                 m_camera_yaw += 360;
 559
 560                                         while (m_camera_yaw > 360)
 561                                                 m_camera_yaw -= 360;
 562
 563                                         // update shootline
 564                                         m_shootline = m_device
 565                                                         ->getSceneManager()
 566                                                         ->getSceneCollisionManager()
 567                                                         ->getRayFromScreenCoordinates(v2s32(X, Y));
 568                                         m_pointerpos[event.TouchInput.ID] = v2s32(X, Y);
 569                                 }
 570                         }
 571                         else if ((event.TouchInput.ID == m_move_id) &&
 572                                         (m_move_sent_as_mouse_event)) {
 573                                 m_shootline = m_device
 574                                                 ->getSceneManager()
 575                                                 ->getSceneCollisionManager()
 576                                                 ->getRayFromScreenCoordinates(
 577                                                                 v2s32(event.TouchInput.X,event.TouchInput.Y));
 578                         }
 579                 }
 580                 else {
 581                         handleChangedButton(event);
 582                 }
 583         }
 584 }
 585
 586 void TouchScreenGUI::handleChangedButton(const SEvent &event)
 587 {
 588         for (unsigned int i = 0; i < after_last_element_id; i++) {
 589
 590                 if (m_buttons[i].ids.empty()) {
 591                         continue;
 592                 }
 593                 for(std::vector<int>::iterator iter = m_buttons[i].ids.begin();
 594                                 iter != m_buttons[i].ids.end(); iter++) {
 595
 596                         if (event.TouchInput.ID == *iter) {
 597
 598                                 int current_button_id =
 599                                                 getButtonID(event.TouchInput.X, event.TouchInput.Y);
 600
 601                                 if (current_button_id == i) {
 602                                         continue;
 603                                 }
 604
 605                                 /* remove old button */
 606                                 ButtonEvent((touch_gui_button_id) i,*iter,false);
 607
 608                                 if (current_button_id == after_last_element_id) {
 609                                         return;
 610                                 }
 611                                 ButtonEvent((touch_gui_button_id) current_button_id,*iter,true);
 612                                 return;
 613
 614                         }
 615                 }
 616         }
 617
 618         int current_button_id = getButtonID(event.TouchInput.X, event.TouchInput.Y);
 619
 620         if (current_button_id == after_last_element_id) {
 621                 return;
 622         }
 623
 624         button_info* btn = &m_buttons[current_button_id];
 625         if (std::find(btn->ids.begin(),btn->ids.end(), event.TouchInput.ID) == btn->ids.end()) {
 626                 ButtonEvent((touch_gui_button_id) current_button_id,event.TouchInput.ID,true);
 627         }
 628
 629 }
 630
 631 bool TouchScreenGUI::doubleTapDetection()
 632 {
 633         m_key_events[0].down_time = m_key_events[1].down_time;
 634         m_key_events[0].x         = m_key_events[1].x;
 635         m_key_events[0].y         = m_key_events[1].y;
 636         m_key_events[1].down_time = m_move_downtime;
 637         m_key_events[1].x         = m_move_downlocation.X;
 638         m_key_events[1].y         = m_move_downlocation.Y;
 639
 640         u32 delta = porting::getDeltaMs(m_key_events[0].down_time,getTimeMs());
 641         if (delta > 400)
 642                 return false;
 643
 644         double distance = sqrt(
 645                         (m_key_events[0].x - m_key_events[1].x) * (m_key_events[0].x - m_key_events[1].x) +
 646                         (m_key_events[0].y - m_key_events[1].y) * (m_key_events[0].y - m_key_events[1].y));
 647
 648
 649         if (distance >(20 + g_settings->getU16("touchscreen_threshold")))
 650                 return false;
 651
 652         SEvent* translated = new SEvent();
 653         memset(translated,0,sizeof(SEvent));
 654         translated->EventType               = EET_MOUSE_INPUT_EVENT;
 655         translated->MouseInput.X            = m_key_events[0].x;
 656         translated->MouseInput.Y            = m_key_events[0].y;
 657         translated->MouseInput.Shift        = false;
 658         translated->MouseInput.Control      = false;
 659         translated->MouseInput.ButtonStates = EMBSM_RIGHT;
 660
 661         // update shootline
 662         m_shootline = m_device
 663                         ->getSceneManager()
 664                         ->getSceneCollisionManager()
 665                         ->getRayFromScreenCoordinates(v2s32(m_key_events[0].x, m_key_events[0].y));
 666
 667         translated->MouseInput.Event = EMIE_RMOUSE_PRESSED_DOWN;
 668         verbosestream << "TouchScreenGUI::translateEvent right click press" << std::endl;
 669         m_receiver->OnEvent(*translated);
 670
 671         translated->MouseInput.ButtonStates = 0;
 672         translated->MouseInput.Event        = EMIE_RMOUSE_LEFT_UP;
 673         verbosestream << "TouchScreenGUI::translateEvent right click release" << std::endl;
 674         m_receiver->OnEvent(*translated);
 675         delete translated;
 676         return true;
 677
 678 }
 679
 680 TouchScreenGUI::~TouchScreenGUI()
 681 {
 682         for (unsigned int i=0; i < after_last_element_id; i++) {
 683                 button_info* btn = &m_buttons[i];
 684                 if (btn->guibutton != 0) {
 685                         btn->guibutton->drop();
 686                         btn->guibutton = NULL;
 687                 }
 688         }
 689 }
 690
 691 void TouchScreenGUI::step(float dtime)
 692 {
 693         /* simulate keyboard repeats */
 694         for (unsigned int i=0; i < after_last_element_id; i++) {
 695                 button_info* btn = &m_buttons[i];
 696
 697                 if (btn->ids.size() > 0) {
 698                         btn->repeatcounter += dtime;
 699
 700                         /* in case we're moving around digging does not happen */
 701                         if (m_move_id != -1)
 702                                 m_move_has_really_moved = true;
 703
 704                         if (btn->repeatcounter < btn->repeatdelay) continue;
 705
 706                         btn->repeatcounter              = 0;
 707                         SEvent translated;
 708                         memset(&translated,0,sizeof(SEvent));
 709                         translated.EventType            = irr::EET_KEY_INPUT_EVENT;
 710                         translated.KeyInput.Key         = btn->keycode;
 711                         translated.KeyInput.PressedDown = false;
 712                         m_receiver->OnEvent(translated);
 713
 714                         translated.KeyInput.PressedDown = true;
 715                         m_receiver->OnEvent(translated);
 716                 }
 717         }
 718
 719         /* if a new placed pointer isn't moved for some time start digging */
 720         if ((m_move_id != -1) &&
 721                         (!m_move_has_really_moved) &&
 722                         (!m_move_sent_as_mouse_event)) {
 723
 724                 u32 delta = porting::getDeltaMs(m_move_downtime,getTimeMs());
 725
 726                 if (delta > MIN_DIG_TIME_MS) {
 727                         m_shootline = m_device
 728                                         ->getSceneManager()
 729                                         ->getSceneCollisionManager()
 730                                         ->getRayFromScreenCoordinates(
 731                                                         v2s32(m_move_downlocation.X,m_move_downlocation.Y));
 732
 733                         SEvent translated;
 734                         memset(&translated,0,sizeof(SEvent));
 735                         translated.EventType               = EET_MOUSE_INPUT_EVENT;
 736                         translated.MouseInput.X            = m_move_downlocation.X;
 737                         translated.MouseInput.Y            = m_move_downlocation.Y;
 738                         translated.MouseInput.Shift        = false;
 739                         translated.MouseInput.Control      = false;
 740                         translated.MouseInput.ButtonStates = EMBSM_LEFT;
 741                         translated.MouseInput.Event        = EMIE_LMOUSE_PRESSED_DOWN;
 742                         verbosestream << "TouchScreenGUI::step left click press" << std::endl;
 743                         m_receiver->OnEvent(translated);
 744                         m_move_sent_as_mouse_event         = true;
 745                 }
 746         }
 747 }
 748
 749 void TouchScreenGUI::resetHud()
 750 {
 751         m_hud_rects.clear();
 752 }
 753
 754 void TouchScreenGUI::registerHudItem(int index, const rect<s32> &rect)
 755 {
 756         m_hud_rects[index] = rect;
 757 }
 758
 759 void TouchScreenGUI::Toggle(bool visible)
 760 {
 761         m_visible = visible;
 762         for (unsigned int i=0; i < after_last_element_id; i++) {
 763                 button_info* btn = &m_buttons[i];
 764                 if (btn->guibutton != 0) {
 765                         btn->guibutton->setVisible(visible);
 766                 }
 767         }
 768 }
 769
 770 void TouchScreenGUI::Hide()
 771 {
 772         Toggle(false);
 773 }
 774
 775 void TouchScreenGUI::Show()
 776 {
 777         Toggle(true);
 778 }