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
 421 void TouchScreenGUI::handleReleaseEvent(int evt_id)
 422 {
 423         touch_gui_button_id button = getButtonID(evt_id);
 424
 425         /* handle button events */
 426         if (button != after_last_element_id) {
 427                 ButtonEvent(button, evt_id, false);
 428         }
 429         /* handle hud button events */
 430         else if (isReleaseHUDButton(evt_id)) {
 431                 /* nothing to do here */
 432         }
 433         /* handle the point used for moving view */
 434         else if (evt_id == m_move_id) {
 435                 m_move_id = -1;
 436
 437                 /* if this pointer issued a mouse event issue symmetric release here */
 438                 if (m_move_sent_as_mouse_event) {
 439                         SEvent* translated = new SEvent;
 440                         memset(translated,0,sizeof(SEvent));
 441                         translated->EventType               = EET_MOUSE_INPUT_EVENT;
 442                         translated->MouseInput.X            = m_move_downlocation.X;
 443                         translated->MouseInput.Y            = m_move_downlocation.Y;
 444                         translated->MouseInput.Shift        = false;
 445                         translated->MouseInput.Control      = false;
 446                         translated->MouseInput.ButtonStates = 0;
 447                         translated->MouseInput.Event        = EMIE_LMOUSE_LEFT_UP;
 448                         m_receiver->OnEvent(*translated);
 449                         delete translated;
 450                 }
 451                 else {
 452                         /* do double tap detection */
 453                         doubleTapDetection();
 454                 }
 455         }
 456         else {
 457                 infostream
 458                         << "TouchScreenGUI::translateEvent released unknown button: "
 459                         << evt_id << std::endl;
 460         }
 461
 462         for (std::vector<id_status>::iterator iter = m_known_ids.begin();
 463                         iter != m_known_ids.end(); ++iter) {
 464                 if (iter->id == evt_id) {
 465                         m_known_ids.erase(iter);
 466                         break;
 467                 }
 468         }
 469 }
 470
 471 void TouchScreenGUI::translateEvent(const SEvent &event)
 472 {
 473         if (!m_visible) {
 474                 infostream << "TouchScreenGUI::translateEvent got event but not visible?!" << std::endl;
 475                 return;
 476         }
 477
 478         if (event.EventType != EET_TOUCH_INPUT_EVENT) {
 479                 return;
 480         }
 481
 482         if (event.TouchInput.Event == ETIE_PRESSED_DOWN) {
 483
 484                 /* add to own copy of eventlist ...
 485                  * android would provide this information but irrlicht guys don't
 486                  * wanna design a efficient interface
 487                  */
 488                 id_status toadd;
 489                 toadd.id = event.TouchInput.ID;
 490                 toadd.X  = event.TouchInput.X;
 491                 toadd.Y  = event.TouchInput.Y;
 492                 m_known_ids.push_back(toadd);
 493
 494                 int eventID = event.TouchInput.ID;
 495
 496                 touch_gui_button_id button =
 497                                 getButtonID(event.TouchInput.X, event.TouchInput.Y);
 498
 499                 /* handle button events */
 500                 if (button != after_last_element_id) {
 501                         ButtonEvent(button,eventID,true);
 502                 }
 503                 else if (isHUDButton(event))
 504                 {
 505                         /* already handled in isHUDButton() */
 506                 }
 507                 /* handle non button events */
 508                 else {
 509                         /* if we don't already have a moving point make this the moving one */
 510                         if (m_move_id == -1) {
 511                                 m_move_id                  = event.TouchInput.ID;
 512                                 m_move_has_really_moved    = false;
 513                                 m_move_downtime            = getTimeMs();
 514                                 m_move_downlocation        = v2s32(event.TouchInput.X, event.TouchInput.Y);
 515                                 m_move_sent_as_mouse_event = false;
 516                         }
 517                 }
 518
 519                 m_pointerpos[event.TouchInput.ID] = v2s32(event.TouchInput.X, event.TouchInput.Y);
 520         }
 521         else if (event.TouchInput.Event == ETIE_LEFT_UP) {
 522                 verbosestream << "Up event for pointerid: " << event.TouchInput.ID << std::endl;
 523
 524                 handleReleaseEvent(event.TouchInput.ID);
 525         }
 526         else {
 527                 assert(event.TouchInput.Event == ETIE_MOVED);
 528                 int move_idx = event.TouchInput.ID;
 529
 530                 if (m_pointerpos[event.TouchInput.ID] ==
 531                                 v2s32(event.TouchInput.X, event.TouchInput.Y)) {
 532                         return;
 533                 }
 534
 535                 if (m_move_id != -1) {
 536                         if ((event.TouchInput.ID == m_move_id) &&
 537                                 (!m_move_sent_as_mouse_event)) {
 538
 539                                 double distance = sqrt(
 540                                                 (m_pointerpos[event.TouchInput.ID].X - event.TouchInput.X) *
 541                                                 (m_pointerpos[event.TouchInput.ID].X - event.TouchInput.X) +
 542                                                 (m_pointerpos[event.TouchInput.ID].Y - event.TouchInput.Y) *
 543                                                 (m_pointerpos[event.TouchInput.ID].Y - event.TouchInput.Y));
 544
 545                                 if ((distance > g_settings->getU16("touchscreen_threshold")) ||
 546                                                 (m_move_has_really_moved)) {
 547                                         m_move_has_really_moved = true;
 548                                         s32 X = event.TouchInput.X;
 549                                         s32 Y = event.TouchInput.Y;
 550
 551                                         // update camera_yaw and camera_pitch
 552                                         s32 dx = X - m_pointerpos[event.TouchInput.ID].X;
 553                                         s32 dy = Y - m_pointerpos[event.TouchInput.ID].Y;
 554
 555                                         /* adapt to similar behaviour as pc screen */
 556                                         double d         = g_settings->getFloat("mouse_sensitivity") *4;
 557                                         double old_yaw   = m_camera_yaw;
 558                                         double old_pitch = m_camera_pitch;
 559
 560                                         m_camera_yaw   -= dx * d;
 561                                         m_camera_pitch  = MYMIN(MYMAX( m_camera_pitch + (dy * d),-180),180);
 562
 563                                         while (m_camera_yaw < 0)
 564                                                 m_camera_yaw += 360;
 565
 566                                         while (m_camera_yaw > 360)
 567                                                 m_camera_yaw -= 360;
 568
 569                                         // update shootline
 570                                         m_shootline = m_device
 571                                                         ->getSceneManager()
 572                                                         ->getSceneCollisionManager()
 573                                                         ->getRayFromScreenCoordinates(v2s32(X, Y));
 574                                         m_pointerpos[event.TouchInput.ID] = v2s32(X, Y);
 575                                 }
 576                         }
 577                         else if ((event.TouchInput.ID == m_move_id) &&
 578                                         (m_move_sent_as_mouse_event)) {
 579                                 m_shootline = m_device
 580                                                 ->getSceneManager()
 581                                                 ->getSceneCollisionManager()
 582                                                 ->getRayFromScreenCoordinates(
 583                                                                 v2s32(event.TouchInput.X,event.TouchInput.Y));
 584                         }
 585                 }
 586                 else {
 587                         handleChangedButton(event);
 588                 }
 589         }
 590 }
 591
 592 void TouchScreenGUI::handleChangedButton(const SEvent &event)
 593 {
 594         for (unsigned int i = 0; i < after_last_element_id; i++) {
 595
 596                 if (m_buttons[i].ids.empty()) {
 597                         continue;
 598                 }
 599                 for(std::vector<int>::iterator iter = m_buttons[i].ids.begin();
 600                                 iter != m_buttons[i].ids.end(); ++iter) {
 601
 602                         if (event.TouchInput.ID == *iter) {
 603
 604                                 int current_button_id =
 605                                                 getButtonID(event.TouchInput.X, event.TouchInput.Y);
 606
 607                                 if (current_button_id == i) {
 608                                         continue;
 609                                 }
 610
 611                                 /* remove old button */
 612                                 ButtonEvent((touch_gui_button_id) i,*iter,false);
 613
 614                                 if (current_button_id == after_last_element_id) {
 615                                         return;
 616                                 }
 617                                 ButtonEvent((touch_gui_button_id) current_button_id,*iter,true);
 618                                 return;
 619
 620                         }
 621                 }
 622         }
 623
 624         int current_button_id = getButtonID(event.TouchInput.X, event.TouchInput.Y);
 625
 626         if (current_button_id == after_last_element_id) {
 627                 return;
 628         }
 629
 630         button_info* btn = &m_buttons[current_button_id];
 631         if (std::find(btn->ids.begin(),btn->ids.end(), event.TouchInput.ID) == btn->ids.end()) {
 632                 ButtonEvent((touch_gui_button_id) current_button_id,event.TouchInput.ID,true);
 633         }
 634
 635 }
 636
 637 bool TouchScreenGUI::doubleTapDetection()
 638 {
 639         m_key_events[0].down_time = m_key_events[1].down_time;
 640         m_key_events[0].x         = m_key_events[1].x;
 641         m_key_events[0].y         = m_key_events[1].y;
 642         m_key_events[1].down_time = m_move_downtime;
 643         m_key_events[1].x         = m_move_downlocation.X;
 644         m_key_events[1].y         = m_move_downlocation.Y;
 645
 646         u32 delta = porting::getDeltaMs(m_key_events[0].down_time,getTimeMs());
 647         if (delta > 400)
 648                 return false;
 649
 650         double distance = sqrt(
 651                         (m_key_events[0].x - m_key_events[1].x) * (m_key_events[0].x - m_key_events[1].x) +
 652                         (m_key_events[0].y - m_key_events[1].y) * (m_key_events[0].y - m_key_events[1].y));
 653
 654
 655         if (distance >(20 + g_settings->getU16("touchscreen_threshold")))
 656                 return false;
 657
 658         SEvent* translated = new SEvent();
 659         memset(translated,0,sizeof(SEvent));
 660         translated->EventType               = EET_MOUSE_INPUT_EVENT;
 661         translated->MouseInput.X            = m_key_events[0].x;
 662         translated->MouseInput.Y            = m_key_events[0].y;
 663         translated->MouseInput.Shift        = false;
 664         translated->MouseInput.Control      = false;
 665         translated->MouseInput.ButtonStates = EMBSM_RIGHT;
 666
 667         // update shootline
 668         m_shootline = m_device
 669                         ->getSceneManager()
 670                         ->getSceneCollisionManager()
 671                         ->getRayFromScreenCoordinates(v2s32(m_key_events[0].x, m_key_events[0].y));
 672
 673         translated->MouseInput.Event = EMIE_RMOUSE_PRESSED_DOWN;
 674         verbosestream << "TouchScreenGUI::translateEvent right click press" << std::endl;
 675         m_receiver->OnEvent(*translated);
 676
 677         translated->MouseInput.ButtonStates = 0;
 678         translated->MouseInput.Event        = EMIE_RMOUSE_LEFT_UP;
 679         verbosestream << "TouchScreenGUI::translateEvent right click release" << std::endl;
 680         m_receiver->OnEvent(*translated);
 681         delete translated;
 682         return true;
 683
 684 }
 685
 686 TouchScreenGUI::~TouchScreenGUI()
 687 {
 688         for (unsigned int i=0; i < after_last_element_id; i++) {
 689                 button_info* btn = &m_buttons[i];
 690                 if (btn->guibutton != 0) {
 691                         btn->guibutton->drop();
 692                         btn->guibutton = NULL;
 693                 }
 694         }
 695 }
 696
 697 void TouchScreenGUI::step(float dtime)
 698 {
 699         /* simulate keyboard repeats */
 700         for (unsigned int i=0; i < after_last_element_id; i++) {
 701                 button_info* btn = &m_buttons[i];
 702
 703                 if (btn->ids.size() > 0) {
 704                         btn->repeatcounter += dtime;
 705
 706                         /* in case we're moving around digging does not happen */
 707                         if (m_move_id != -1)
 708                                 m_move_has_really_moved = true;
 709
 710                         if (btn->repeatcounter < btn->repeatdelay) continue;
 711
 712                         btn->repeatcounter              = 0;
 713                         SEvent translated;
 714                         memset(&translated,0,sizeof(SEvent));
 715                         translated.EventType            = irr::EET_KEY_INPUT_EVENT;
 716                         translated.KeyInput.Key         = btn->keycode;
 717                         translated.KeyInput.PressedDown = false;
 718                         m_receiver->OnEvent(translated);
 719
 720                         translated.KeyInput.PressedDown = true;
 721                         m_receiver->OnEvent(translated);
 722                 }
 723         }
 724
 725         /* if a new placed pointer isn't moved for some time start digging */
 726         if ((m_move_id != -1) &&
 727                         (!m_move_has_really_moved) &&
 728                         (!m_move_sent_as_mouse_event)) {
 729
 730                 u32 delta = porting::getDeltaMs(m_move_downtime,getTimeMs());
 731
 732                 if (delta > MIN_DIG_TIME_MS) {
 733                         m_shootline = m_device
 734                                         ->getSceneManager()
 735                                         ->getSceneCollisionManager()
 736                                         ->getRayFromScreenCoordinates(
 737                                                         v2s32(m_move_downlocation.X,m_move_downlocation.Y));
 738
 739                         SEvent translated;
 740                         memset(&translated,0,sizeof(SEvent));
 741                         translated.EventType               = EET_MOUSE_INPUT_EVENT;
 742                         translated.MouseInput.X            = m_move_downlocation.X;
 743                         translated.MouseInput.Y            = m_move_downlocation.Y;
 744                         translated.MouseInput.Shift        = false;
 745                         translated.MouseInput.Control      = false;
 746                         translated.MouseInput.ButtonStates = EMBSM_LEFT;
 747                         translated.MouseInput.Event        = EMIE_LMOUSE_PRESSED_DOWN;
 748                         verbosestream << "TouchScreenGUI::step left click press" << std::endl;
 749                         m_receiver->OnEvent(translated);
 750                         m_move_sent_as_mouse_event         = true;
 751                 }
 752         }
 753 }
 754
 755 void TouchScreenGUI::resetHud()
 756 {
 757         m_hud_rects.clear();
 758 }
 759
 760 void TouchScreenGUI::registerHudItem(int index, const rect<s32> &rect)
 761 {
 762         m_hud_rects[index] = rect;
 763 }
 764
 765 void TouchScreenGUI::Toggle(bool visible)
 766 {
 767         m_visible = visible;
 768         for (unsigned int i=0; i < after_last_element_id; i++) {
 769                 button_info* btn = &m_buttons[i];
 770                 if (btn->guibutton != 0) {
 771                         btn->guibutton->setVisible(visible);
 772                 }
 773         }
 774
 775         /* clear all active buttons */
 776         if (!visible) {
 777                 while (m_known_ids.size() > 0) {
 778                         handleReleaseEvent(m_known_ids.begin()->id);
 779                 }
 780         }
 781 }
 782
 783 void TouchScreenGUI::Hide()
 784 {
 785         if (!m_visible)
 786                 return;
 787
 788         Toggle(false);
 789 }
 790
 791 void TouchScreenGUI::Show()
 792 {
 793         if (m_visible)
 794                 return;
 795
 796         Toggle(true);
 797 }