src/guiInventoryMenu.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010 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 General Public License as published by
   7 the Free Software Foundation; either version 2 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 General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20
  21 #include "guiInventoryMenu.h"
  22 #include "constants.h"
  23 #include "gamedef.h"
  24 #include "keycode.h"
  25 #include "strfnd.h"
  26 #include <IGUICheckBox.h>
  27 #include <IGUIEditBox.h>
  28 #include <IGUIButton.h>
  29 #include <IGUIStaticText.h>
  30 #include <IGUIFont.h>
  31 #include "log.h"
  32
  33 void drawItemStack(video::IVideoDriver *driver,
  34                 gui::IGUIFont *font,
  35                 const ItemStack &item,
  36                 const core::rect<s32> &rect,
  37                 const core::rect<s32> *clip,
  38                 IGameDef *gamedef)
  39 {
  40         if(item.empty())
  41                 return;
  42
  43         const ItemDefinition &def = item.getDefinition(gamedef->idef());
  44         video::ITexture *texture = def.inventory_texture;
  45
  46         // Draw the inventory texture
  47         if(texture != NULL)
  48         {
  49                 const video::SColor color(255,255,255,255);
  50                 const video::SColor colors[] = {color,color,color,color};
  51                 driver->draw2DImage(texture, rect,
  52                         core::rect<s32>(core::position2d<s32>(0,0),
  53                         core::dimension2di(texture->getOriginalSize())),
  54                         clip, colors, true);
  55         }
  56
  57         if(def.type == ITEM_TOOL && item.wear != 0)
  58         {
  59                 // Draw a progressbar
  60                 float barheight = rect.getHeight()/16;
  61                 float barpad_x = rect.getWidth()/16;
  62                 float barpad_y = rect.getHeight()/16;
  63                 core::rect<s32> progressrect(
  64                         rect.UpperLeftCorner.X + barpad_x,
  65                         rect.LowerRightCorner.Y - barpad_y - barheight,
  66                         rect.LowerRightCorner.X - barpad_x,
  67                         rect.LowerRightCorner.Y - barpad_y);
  68
  69                 // Shrink progressrect by amount of tool damage
  70                 float wear = item.wear / 65535.0;
  71                 int progressmid =
  72                         wear * progressrect.UpperLeftCorner.X +
  73                         (1-wear) * progressrect.LowerRightCorner.X;
  74
  75                 // Compute progressbar color
  76                 //   wear = 0.0: green
  77                 //   wear = 0.5: yellow
  78                 //   wear = 1.0: red
  79                 video::SColor color(255,255,255,255);
  80                 int wear_i = MYMIN(floor(wear * 600), 511);
  81                 wear_i = MYMIN(wear_i + 10, 511);
  82                 if(wear_i <= 255)
  83                         color.set(255, wear_i, 255, 0);
  84                 else
  85                         color.set(255, 255, 511-wear_i, 0);
  86
  87                 core::rect<s32> progressrect2 = progressrect;
  88                 progressrect2.LowerRightCorner.X = progressmid;
  89                 driver->draw2DRectangle(color, progressrect2, clip);
  90
  91                 color = video::SColor(255,0,0,0);
  92                 progressrect2 = progressrect;
  93                 progressrect2.UpperLeftCorner.X = progressmid;
  94                 driver->draw2DRectangle(color, progressrect2, clip);
  95         }
  96
  97         if(font != NULL && item.count >= 2)
  98         {
  99                 // Get the item count as a string
 100                 std::string text = itos(item.count);
 101                 v2u32 dim = font->getDimension(narrow_to_wide(text).c_str());
 102                 v2s32 sdim(dim.X,dim.Y);
 103
 104                 core::rect<s32> rect2(
 105                         /*rect.UpperLeftCorner,
 106                         core::dimension2d<u32>(rect.getWidth(), 15)*/
 107                         rect.LowerRightCorner - sdim,
 108                         sdim
 109                 );
 110
 111                 video::SColor bgcolor(128,0,0,0);
 112                 driver->draw2DRectangle(bgcolor, rect2, clip);
 113
 114                 video::SColor color(255,255,255,255);
 115                 font->draw(text.c_str(), rect2, color, false, false, clip);
 116         }
 117 }
 118
 119 /*
 120         GUIInventoryMenu
 121 */
 122
 123 GUIInventoryMenu::GUIInventoryMenu(gui::IGUIEnvironment* env,
 124                 gui::IGUIElement* parent, s32 id,
 125                 IMenuManager *menumgr,
 126                 v2s16 menu_size,
 127                 InventoryManager *invmgr,
 128                 IGameDef *gamedef
 129                 ):
 130         GUIModalMenu(env, parent, id, menumgr),
 131         m_menu_size(menu_size),
 132         m_invmgr(invmgr),
 133         m_gamedef(gamedef)
 134 {
 135         m_selected_item = NULL;
 136         m_selected_amount = 0;
 137         m_selected_dragging = false;
 138         m_tooltip_element = NULL;
 139 }
 140
 141 GUIInventoryMenu::~GUIInventoryMenu()
 142 {
 143         removeChildren();
 144
 145         if(m_selected_item)
 146                 delete m_selected_item;
 147 }
 148
 149 void GUIInventoryMenu::removeChildren()
 150 {
 151         const core::list<gui::IGUIElement*> &children = getChildren();
 152         core::list<gui::IGUIElement*> children_copy;
 153         for(core::list<gui::IGUIElement*>::ConstIterator
 154                         i = children.begin(); i != children.end(); i++)
 155         {
 156                 children_copy.push_back(*i);
 157         }
 158         for(core::list<gui::IGUIElement*>::Iterator
 159                         i = children_copy.begin();
 160                         i != children_copy.end(); i++)
 161         {
 162                 (*i)->remove();
 163         }
 164         /*{
 165                 gui::IGUIElement *e = getElementFromId(256);
 166                 if(e != NULL)
 167                         e->remove();
 168         }*/
 169         if(m_tooltip_element)
 170         {
 171                 m_tooltip_element->remove();
 172                 m_tooltip_element = NULL;
 173         }
 174 }
 175
 176 void GUIInventoryMenu::regenerateGui(v2u32 screensize)
 177 {
 178         // Remove children
 179         removeChildren();
 180
 181         /*padding = v2s32(24,24);
 182         spacing = v2s32(60,56);
 183         imgsize = v2s32(48,48);*/
 184
 185         padding = v2s32(screensize.Y/40, screensize.Y/40);
 186         spacing = v2s32(screensize.Y/12, screensize.Y/13);
 187         imgsize = v2s32(screensize.Y/15, screensize.Y/15);
 188
 189         s32 helptext_h = 15;
 190
 191         v2s32 size(
 192                 padding.X*2+spacing.X*(m_menu_size.X-1)+imgsize.X,
 193                 padding.Y*2+spacing.Y*(m_menu_size.Y-1)+imgsize.Y + helptext_h
 194         );
 195
 196         core::rect<s32> rect(
 197                         screensize.X/2 - size.X/2,
 198                         screensize.Y/2 - size.Y/2,
 199                         screensize.X/2 + size.X/2,
 200                         screensize.Y/2 + size.Y/2
 201         );
 202
 203         DesiredRect = rect;
 204         recalculateAbsolutePosition(false);
 205
 206         v2s32 basepos = getBasePos();
 207
 208         m_draw_spec.clear();
 209         for(u16 i=0; i<m_init_draw_spec.size(); i++)
 210         {
 211                 DrawSpec &s = m_init_draw_spec[i];
 212                 if(s.type == "list")
 213                 {
 214                         m_draw_spec.push_back(ListDrawSpec(s.name, s.subname,
 215                                         basepos + v2s32(spacing.X*s.pos.X, spacing.Y*s.pos.Y),
 216                                         s.geom));
 217                 }
 218         }
 219
 220         /*
 221         m_draw_spec.clear();
 222         m_draw_spec.push_back(ListDrawSpec("main",
 223                         basepos + v2s32(spacing.X*0, spacing.Y*3), v2s32(8, 4)));
 224         m_draw_spec.push_back(ListDrawSpec("craft",
 225                         basepos + v2s32(spacing.X*3, spacing.Y*0), v2s32(3, 3)));
 226         m_draw_spec.push_back(ListDrawSpec("craftresult",
 227                         basepos + v2s32(spacing.X*7, spacing.Y*1), v2s32(1, 1)));
 228         */
 229
 230         // Add children
 231         {
 232                 core::rect<s32> rect(0, 0, size.X-padding.X*2, helptext_h);
 233                 rect = rect + v2s32(size.X/2 - rect.getWidth()/2,
 234                                 size.Y-rect.getHeight()-15);
 235                 const wchar_t *text =
 236                 L"Left click: Move all items, Right click: Move single item";
 237                 Environment->addStaticText(text, rect, false, true, this, 256);
 238
 239                 // Add tooltip
 240                 // Note: parent != this so that the tooltip isn't clipped by the menu rectangle
 241                 m_tooltip_element = Environment->addStaticText(L"",core::rect<s32>(0,0,110,18));
 242                 m_tooltip_element->enableOverrideColor(true);
 243                 m_tooltip_element->setBackgroundColor(video::SColor(255,110,130,60));
 244                 m_tooltip_element->setDrawBackground(true);
 245                 m_tooltip_element->setDrawBorder(true);
 246                 m_tooltip_element->setOverrideColor(video::SColor(255,255,255,255));
 247                 m_tooltip_element->setTextAlignment(gui::EGUIA_CENTER, gui::EGUIA_CENTER);
 248                 m_tooltip_element->setWordWrap(false);
 249         }
 250 }
 251
 252 GUIInventoryMenu::ItemSpec GUIInventoryMenu::getItemAtPos(v2s32 p) const
 253 {
 254         core::rect<s32> imgrect(0,0,imgsize.X,imgsize.Y);
 255
 256         for(u32 i=0; i<m_draw_spec.size(); i++)
 257         {
 258                 const ListDrawSpec &s = m_draw_spec[i];
 259
 260                 for(s32 i=0; i<s.geom.X*s.geom.Y; i++)
 261                 {
 262                         s32 x = (i%s.geom.X) * spacing.X;
 263                         s32 y = (i/s.geom.X) * spacing.Y;
 264                         v2s32 p0(x,y);
 265                         core::rect<s32> rect = imgrect + s.pos + p0;
 266                         if(rect.isPointInside(p))
 267                         {
 268                                 return ItemSpec(s.inventoryloc, s.listname, i);
 269                         }
 270                 }
 271         }
 272
 273         return ItemSpec(InventoryLocation(), "", -1);
 274 }
 275
 276 void GUIInventoryMenu::drawList(const ListDrawSpec &s, int phase)
 277 {
 278         video::IVideoDriver* driver = Environment->getVideoDriver();
 279
 280         // Get font
 281         gui::IGUIFont *font = NULL;
 282         gui::IGUISkin* skin = Environment->getSkin();
 283         if (skin)
 284                 font = skin->getFont();
 285
 286         Inventory *inv = m_invmgr->getInventory(s.inventoryloc);
 287         assert(inv);
 288         InventoryList *ilist = inv->getList(s.listname);
 289
 290         core::rect<s32> imgrect(0,0,imgsize.X,imgsize.Y);
 291
 292         for(s32 i=0; i<s.geom.X*s.geom.Y; i++)
 293         {
 294                 s32 x = (i%s.geom.X) * spacing.X;
 295                 s32 y = (i/s.geom.X) * spacing.Y;
 296                 v2s32 p(x,y);
 297                 core::rect<s32> rect = imgrect + s.pos + p;
 298                 ItemStack item;
 299                 if(ilist)
 300                         item = ilist->getItem(i);
 301
 302                 bool selected = m_selected_item
 303                         && m_invmgr->getInventory(m_selected_item->inventoryloc) == inv
 304                         && m_selected_item->listname == s.listname
 305                         && m_selected_item->i == i;
 306                 bool hovering = rect.isPointInside(m_pointer);
 307
 308                 if(phase == 0)
 309                 {
 310                         if(hovering && m_selected_item)
 311                         {
 312                                 video::SColor bgcolor(255,192,192,192);
 313                                 driver->draw2DRectangle(bgcolor, rect, &AbsoluteClippingRect);
 314                         }
 315                         else
 316                         {
 317                                 video::SColor bgcolor(255,128,128,128);
 318                                 driver->draw2DRectangle(bgcolor, rect, &AbsoluteClippingRect);
 319                         }
 320                 }
 321
 322                 if(phase == 1)
 323                 {
 324                         // Draw item stack
 325                         if(selected)
 326                         {
 327                                 item.takeItem(m_selected_amount);
 328                         }
 329                         if(!item.empty())
 330                         {
 331                                 drawItemStack(driver, font, item,
 332                                                 rect, &AbsoluteClippingRect, m_gamedef);
 333                         }
 334
 335                         // Draw tooltip
 336                         std::string tooltip_text = "";
 337                         if(hovering && !m_selected_item)
 338                                 tooltip_text = item.getDefinition(m_gamedef->idef()).description;
 339                         if(tooltip_text != "")
 340                         {
 341                                 m_tooltip_element->setVisible(true);
 342                                 this->bringToFront(m_tooltip_element);
 343                                 m_tooltip_element->setText(narrow_to_wide(tooltip_text).c_str());
 344                                 s32 tooltip_x = m_pointer.X + 15;
 345                                 s32 tooltip_y = m_pointer.Y + 15;
 346                                 s32 tooltip_width = m_tooltip_element->getTextWidth() + 15;
 347                                 s32 tooltip_height = m_tooltip_element->getTextHeight() + 5;
 348                                 m_tooltip_element->setRelativePosition(core::rect<s32>(
 349                                                 core::position2d<s32>(tooltip_x, tooltip_y),
 350                                                 core::dimension2d<s32>(tooltip_width, tooltip_height)));
 351                         }
 352                 }
 353         }
 354 }
 355
 356 void GUIInventoryMenu::drawSelectedItem()
 357 {
 358         if(!m_selected_item)
 359                 return;
 360
 361         video::IVideoDriver* driver = Environment->getVideoDriver();
 362
 363         // Get font
 364         gui::IGUIFont *font = NULL;
 365         gui::IGUISkin* skin = Environment->getSkin();
 366         if (skin)
 367                 font = skin->getFont();
 368
 369         Inventory *inv = m_invmgr->getInventory(m_selected_item->inventoryloc);
 370         assert(inv);
 371         InventoryList *list = inv->getList(m_selected_item->listname);
 372         assert(list);
 373         ItemStack stack = list->getItem(m_selected_item->i);
 374         stack.count = m_selected_amount;
 375
 376         core::rect<s32> imgrect(0,0,imgsize.X,imgsize.Y);
 377         core::rect<s32> rect = imgrect + (m_pointer - imgrect.getCenter());
 378         drawItemStack(driver, font, stack, rect, NULL, m_gamedef);
 379 }
 380
 381 void GUIInventoryMenu::drawMenu()
 382 {
 383         updateSelectedItem();
 384
 385         gui::IGUISkin* skin = Environment->getSkin();
 386         if (!skin)
 387                 return;
 388         video::IVideoDriver* driver = Environment->getVideoDriver();
 389
 390         video::SColor bgcolor(140,0,0,0);
 391         driver->draw2DRectangle(bgcolor, AbsoluteRect, &AbsoluteClippingRect);
 392
 393         m_tooltip_element->setVisible(false);
 394
 395         /*
 396                 Draw items
 397                 Phase 0: Item slot rectangles
 398                 Phase 1: Item images; prepare tooltip
 399         */
 400
 401         for(int phase=0; phase<=1; phase++)
 402         for(u32 i=0; i<m_draw_spec.size(); i++)
 403         {
 404                 drawList(m_draw_spec[i], phase);
 405         }
 406
 407         /*
 408                 Draw dragged item stack
 409         */
 410         drawSelectedItem();
 411
 412         /*
 413                 Call base class
 414         */
 415         gui::IGUIElement::draw();
 416 }
 417
 418 void GUIInventoryMenu::updateSelectedItem()
 419 {
 420         // If the selected stack has become empty for some reason, deselect it.
 421         // If the selected stack has become smaller, adjust m_selected_amount.
 422         if(m_selected_item)
 423         {
 424                 bool selection_valid = false;
 425                 if(m_selected_item->isValid())
 426                 {
 427                         Inventory *inv = m_invmgr->getInventory(m_selected_item->inventoryloc);
 428                         if(inv)
 429                         {
 430                                 InventoryList *list = inv->getList(m_selected_item->listname);
 431                                 if(list && (u32) m_selected_item->i < list->getSize())
 432                                 {
 433                                         ItemStack stack = list->getItem(m_selected_item->i);
 434                                         if(m_selected_amount > stack.count)
 435                                                 m_selected_amount = stack.count;
 436                                         if(!stack.empty())
 437                                                 selection_valid = true;
 438                                 }
 439                         }
 440                 }
 441                 if(!selection_valid)
 442                 {
 443                         delete m_selected_item;
 444                         m_selected_item = NULL;
 445                         m_selected_amount = 0;
 446                         m_selected_dragging = false;
 447                 }
 448         }
 449
 450         // If craftresult is nonempty and nothing else is selected, select it now.
 451         if(!m_selected_item)
 452         {
 453                 for(u32 i=0; i<m_draw_spec.size(); i++)
 454                 {
 455                         const ListDrawSpec &s = m_draw_spec[i];
 456                         if(s.listname == "craftpreview")
 457                         {
 458                                 Inventory *inv = m_invmgr->getInventory(s.inventoryloc);
 459                                 InventoryList *list = inv->getList("craftresult");
 460                                 if(list && list->getSize() >= 1 && !list->getItem(0).empty())
 461                                 {
 462                                         m_selected_item = new ItemSpec;
 463                                         m_selected_item->inventoryloc = s.inventoryloc;
 464                                         m_selected_item->listname = "craftresult";
 465                                         m_selected_item->i = 0;
 466                                         m_selected_amount = 0;
 467                                         m_selected_dragging = false;
 468                                         break;
 469                                 }
 470                         }
 471                 }
 472         }
 473
 474         // If craftresult is selected, keep the whole stack selected
 475         if(m_selected_item && m_selected_item->listname == "craftresult")
 476         {
 477                 Inventory *inv = m_invmgr->getInventory(m_selected_item->inventoryloc);
 478                 assert(inv);
 479                 InventoryList *list = inv->getList(m_selected_item->listname);
 480                 assert(list);
 481                 m_selected_amount = list->getItem(m_selected_item->i).count;
 482         }
 483 }
 484
 485 bool GUIInventoryMenu::OnEvent(const SEvent& event)
 486 {
 487         if(event.EventType==EET_KEY_INPUT_EVENT)
 488         {
 489                 KeyPress kp(event.KeyInput);
 490                 if (event.KeyInput.PressedDown && (kp == EscapeKey ||
 491                         kp == getKeySetting("keymap_inventory")))
 492                 {
 493                         quitMenu();
 494                         return true;
 495                 }
 496         }
 497         if(event.EventType==EET_MOUSE_INPUT_EVENT
 498                         && event.MouseInput.Event == EMIE_MOUSE_MOVED)
 499         {
 500                 // Mouse moved
 501                 m_pointer = v2s32(event.MouseInput.X, event.MouseInput.Y);
 502         }
 503         if(event.EventType==EET_MOUSE_INPUT_EVENT
 504                         && event.MouseInput.Event != EMIE_MOUSE_MOVED)
 505         {
 506                 // Mouse event other than movement
 507
 508                 v2s32 p(event.MouseInput.X, event.MouseInput.Y);
 509                 m_pointer = p;
 510
 511                 // Get selected item and hovered/clicked item (s)
 512
 513                 updateSelectedItem();
 514                 ItemSpec s = getItemAtPos(p);
 515
 516                 Inventory *inv_selected = NULL;
 517                 Inventory *inv_s = NULL;
 518
 519                 if(m_selected_item)
 520                 {
 521                         inv_selected = m_invmgr->getInventory(m_selected_item->inventoryloc);
 522                         assert(inv_selected);
 523                         assert(inv_selected->getList(m_selected_item->listname) != NULL);
 524                 }
 525
 526                 u32 s_count = 0;
 527
 528                 if(s.isValid())
 529                 {
 530                         inv_s = m_invmgr->getInventory(s.inventoryloc);
 531                         assert(inv_s);
 532
 533                         InventoryList *list = inv_s->getList(s.listname);
 534                         if(list != NULL && (u32) s.i < list->getSize())
 535                                 s_count = list->getItem(s.i).count;
 536                         else
 537                                 s.i = -1;  // make it invalid again
 538                 }
 539
 540                 bool identical = (m_selected_item != NULL) && s.isValid() &&
 541                         (inv_selected == inv_s) &&
 542                         (m_selected_item->listname == s.listname) &&
 543                         (m_selected_item->i == s.i);
 544
 545                 // buttons: 0 = left, 1 = right, 2 = middle
 546                 // up/down: 0 = down (press), 1 = up (release), 2 = unknown event
 547                 int button = 0;
 548                 int updown = 2;
 549                 if(event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN)
 550                         { button = 0; updown = 0; }
 551                 else if(event.MouseInput.Event == EMIE_RMOUSE_PRESSED_DOWN)
 552                         { button = 1; updown = 0; }
 553                 else if(event.MouseInput.Event == EMIE_MMOUSE_PRESSED_DOWN)
 554                         { button = 2; updown = 0; }
 555                 else if(event.MouseInput.Event == EMIE_LMOUSE_LEFT_UP)
 556                         { button = 0; updown = 1; }
 557                 else if(event.MouseInput.Event == EMIE_RMOUSE_LEFT_UP)
 558                         { button = 1; updown = 1; }
 559                 else if(event.MouseInput.Event == EMIE_MMOUSE_LEFT_UP)
 560                         { button = 2; updown = 1; }
 561
 562                 // Set this number to a positive value to generate a move action
 563                 // from m_selected_item to s.
 564                 u32 move_amount = 0;
 565
 566                 // Set this number to a positive value to generate a drop action
 567                 // from m_selected_item.
 568                 u32 drop_amount = 0;
 569
 570                 // Set this number to a positive value to generate a craft action at s.
 571                 u32 craft_amount = 0;
 572
 573                 if(updown == 0)
 574                 {
 575                         // Some mouse button has been pressed
 576
 577                         //infostream<<"Mouse button "<<button<<" pressed at p=("
 578                         //      <<p.X<<","<<p.Y<<")"<<std::endl;
 579
 580                         m_selected_dragging = false;
 581
 582                         if(s.isValid() && s.listname == "craftpreview")
 583                         {
 584                                 // Craft preview has been clicked: craft
 585                                 craft_amount = (button == 2 ? 10 : 1);
 586                         }
 587                         else if(m_selected_item == NULL)
 588                         {
 589                                 if(s_count != 0)
 590                                 {
 591                                         // Non-empty stack has been clicked: select it
 592                                         m_selected_item = new ItemSpec(s);
 593
 594                                         if(button == 1)  // right
 595                                                 m_selected_amount = (s_count + 1) / 2;
 596                                         else if(button == 2)  // middle
 597                                                 m_selected_amount = MYMIN(s_count, 10);
 598                                         else  // left
 599                                                 m_selected_amount = s_count;
 600
 601                                         m_selected_dragging = true;
 602                                 }
 603                         }
 604                         else  // m_selected_item != NULL
 605                         {
 606                                 assert(m_selected_amount >= 1);
 607
 608                                 if(s.isValid())
 609                                 {
 610                                         // Clicked a slot: move
 611                                         if(button == 1)  // right
 612                                                 move_amount = 1;
 613                                         else if(button == 2)  // middle
 614                                                 move_amount = MYMIN(m_selected_amount, 10);
 615                                         else  // left
 616                                                 move_amount = m_selected_amount;
 617
 618                                         if(identical)
 619                                         {
 620                                                 if(move_amount >= m_selected_amount)
 621                                                         m_selected_amount = 0;
 622                                                 else
 623                                                         m_selected_amount -= move_amount;
 624                                                 move_amount = 0;
 625                                         }
 626                                 }
 627                                 else if(getAbsoluteClippingRect().isPointInside(m_pointer))
 628                                 {
 629                                         // Clicked somewhere else: deselect
 630                                         m_selected_amount = 0;
 631                                 }
 632                                 else
 633                                 {
 634                                         // Clicked outside of the window: drop
 635                                         if(button == 1)  // right
 636                                                 drop_amount = 1;
 637                                         else if(button == 2)  // middle
 638                                                 drop_amount = MYMIN(m_selected_amount, 10);
 639                                         else  // left
 640                                                 drop_amount = m_selected_amount;
 641                                 }
 642                         }
 643                 }
 644                 else if(updown == 1)
 645                 {
 646                         // Some mouse button has been released
 647
 648                         //infostream<<"Mouse button "<<button<<" released at p=("
 649                         //      <<p.X<<","<<p.Y<<")"<<std::endl;
 650
 651                         if(m_selected_item != NULL && m_selected_dragging && s.isValid())
 652                         {
 653                                 if(!identical)
 654                                 {
 655                                         // Dragged to different slot: move all selected
 656                                         move_amount = m_selected_amount;
 657                                 }
 658                         }
 659                         else if(m_selected_item != NULL && m_selected_dragging &&
 660                                 !(getAbsoluteClippingRect().isPointInside(m_pointer)))
 661                         {
 662                                 // Dragged outside of window: drop all selected
 663                                 drop_amount = m_selected_amount;
 664                         }
 665
 666                         m_selected_dragging = false;
 667                 }
 668
 669                 // Possibly send inventory action to server
 670                 if(move_amount > 0)
 671                 {
 672                         // Send IACTION_MOVE
 673
 674                         assert(m_selected_item && m_selected_item->isValid());
 675                         assert(s.isValid());
 676
 677                         assert(inv_selected && inv_s);
 678                         InventoryList *list_from = inv_selected->getList(m_selected_item->listname);
 679                         InventoryList *list_to = inv_s->getList(s.listname);
 680                         assert(list_from && list_to);
 681                         ItemStack stack_from = list_from->getItem(m_selected_item->i);
 682                         ItemStack stack_to = list_to->getItem(s.i);
 683
 684                         // Check how many items can be moved
 685                         move_amount = stack_from.count = MYMIN(move_amount, stack_from.count);
 686                         ItemStack leftover = stack_to.addItem(stack_from, m_gamedef->idef());
 687                         if(leftover.count == stack_from.count)
 688                         {
 689                                 // Swap the stacks
 690                                 m_selected_amount -= stack_to.count;
 691                         }
 692                         else if(leftover.empty())
 693                         {
 694                                 // Item fits
 695                                 m_selected_amount -= move_amount;
 696                         }
 697                         else
 698                         {
 699                                 // Item only fits partially
 700                                 move_amount -= leftover.count;
 701                                 m_selected_amount -= move_amount;
 702                         }
 703
 704                         infostream<<"Handing IACTION_MOVE to manager"<<std::endl;
 705                         IMoveAction *a = new IMoveAction();
 706                         a->count = move_amount;
 707                         a->from_inv = m_selected_item->inventoryloc;
 708                         a->from_list = m_selected_item->listname;
 709                         a->from_i = m_selected_item->i;
 710                         a->to_inv = s.inventoryloc;
 711                         a->to_list = s.listname;
 712                         a->to_i = s.i;
 713                         m_invmgr->inventoryAction(a);
 714                 }
 715                 else if(drop_amount > 0)
 716                 {
 717                         // Send IACTION_DROP
 718
 719                         assert(m_selected_item && m_selected_item->isValid());
 720                         assert(inv_selected);
 721                         InventoryList *list_from = inv_selected->getList(m_selected_item->listname);
 722                         assert(list_from);
 723                         ItemStack stack_from = list_from->getItem(m_selected_item->i);
 724
 725                         // Check how many items can be dropped
 726                         drop_amount = stack_from.count = MYMIN(drop_amount, stack_from.count);
 727                         assert(drop_amount > 0 && drop_amount <= m_selected_amount);
 728                         m_selected_amount -= drop_amount;
 729
 730                         infostream<<"Handing IACTION_DROP to manager"<<std::endl;
 731                         IDropAction *a = new IDropAction();
 732                         a->count = drop_amount;
 733                         a->from_inv = m_selected_item->inventoryloc;
 734                         a->from_list = m_selected_item->listname;
 735                         a->from_i = m_selected_item->i;
 736                         m_invmgr->inventoryAction(a);
 737                 }
 738                 else if(craft_amount > 0)
 739                 {
 740                         // Send IACTION_CRAFT
 741
 742                         assert(s.isValid());
 743                         assert(inv_s);
 744
 745                         infostream<<"Handing IACTION_CRAFT to manager"<<std::endl;
 746                         ICraftAction *a = new ICraftAction();
 747                         a->count = craft_amount;
 748                         a->craft_inv = s.inventoryloc;
 749                         m_invmgr->inventoryAction(a);
 750                 }
 751
 752                 // If m_selected_amount has been decreased to zero, deselect
 753                 if(m_selected_amount == 0)
 754                 {
 755                         delete m_selected_item;
 756                         m_selected_item = NULL;
 757                         m_selected_amount = 0;
 758                         m_selected_dragging = false;
 759                 }
 760         }
 761         if(event.EventType==EET_GUI_EVENT)
 762         {
 763                 if(event.GUIEvent.EventType==gui::EGET_ELEMENT_FOCUS_LOST
 764                                 && isVisible())
 765                 {
 766                         if(!canTakeFocus(event.GUIEvent.Element))
 767                         {
 768                                 infostream<<"GUIInventoryMenu: Not allowing focus change."
 769                                                 <<std::endl;
 770                                 // Returning true disables focus change
 771                                 return true;
 772                         }
 773                 }
 774                 if(event.GUIEvent.EventType==gui::EGET_BUTTON_CLICKED)
 775                 {
 776                         /*switch(event.GUIEvent.Caller->getID())
 777                         {
 778                         case 256: // continue
 779                                 setVisible(false);
 780                                 break;
 781                         case 257: // exit
 782                                 dev->closeDevice();
 783                                 break;
 784                         }*/
 785                 }
 786         }
 787
 788         return Parent ? Parent->OnEvent(event) : false;
 789 }
 790
 791 /*
 792         Here is an example traditional set-up sequence for a DrawSpec list:
 793
 794         std::string furnace_inv_id = "nodemetadata:0,1,2";
 795         core::array<GUIInventoryMenu::DrawSpec> draw_spec;
 796         draw_spec.push_back(GUIInventoryMenu::DrawSpec(
 797                         "list", furnace_inv_id, "fuel",
 798                         v2s32(2, 3), v2s32(1, 1)));
 799         draw_spec.push_back(GUIInventoryMenu::DrawSpec(
 800                         "list", furnace_inv_id, "src",
 801                         v2s32(2, 1), v2s32(1, 1)));
 802         draw_spec.push_back(GUIInventoryMenu::DrawSpec(
 803                         "list", furnace_inv_id, "dst",
 804                         v2s32(5, 1), v2s32(2, 2)));
 805         draw_spec.push_back(GUIInventoryMenu::DrawSpec(
 806                         "list", "current_player", "main",
 807                         v2s32(0, 5), v2s32(8, 4)));
 808         setDrawSpec(draw_spec);
 809
 810         Here is the string for creating the same DrawSpec list (a single line,
 811         spread to multiple lines here):
 812
 813         GUIInventoryMenu::makeDrawSpecArrayFromString(
 814                         draw_spec,
 815                         "nodemetadata:0,1,2",
 816                         "invsize[8,9;]"
 817                         "list[current_name;fuel;2,3;1,1;]"
 818                         "list[current_name;src;2,1;1,1;]"
 819                         "list[current_name;dst;5,1;2,2;]"
 820                         "list[current_player;main;0,5;8,4;]");
 821
 822         Returns inventory menu size defined by invsize[].
 823 */
 824 v2s16 GUIInventoryMenu::makeDrawSpecArrayFromString(
 825                 core::array<GUIInventoryMenu::DrawSpec> &draw_spec,
 826                 const std::string &data,
 827                 const InventoryLocation &current_location)
 828 {
 829         v2s16 invsize(8,9);
 830         Strfnd f(data);
 831         while(f.atend() == false)
 832         {
 833                 std::string type = trim(f.next("["));
 834                 //infostream<<"type="<<type<<std::endl;
 835                 if(type == "list")
 836                 {
 837                         std::string name = f.next(";");
 838                         InventoryLocation loc;
 839                         if(name == "current_name")
 840                                 loc = current_location;
 841                         else
 842                                 loc.deSerialize(name);
 843                         std::string subname = f.next(";");
 844                         s32 pos_x = stoi(f.next(","));
 845                         s32 pos_y = stoi(f.next(";"));
 846                         s32 geom_x = stoi(f.next(","));
 847                         s32 geom_y = stoi(f.next(";"));
 848                         infostream<<"list name="<<name<<", subname="<<subname
 849                                         <<", pos=("<<pos_x<<","<<pos_y<<")"
 850                                         <<", geom=("<<geom_x<<","<<geom_y<<")"
 851                                         <<std::endl;
 852                         draw_spec.push_back(GUIInventoryMenu::DrawSpec(
 853                                         type, loc, subname,
 854                                         v2s32(pos_x,pos_y),v2s32(geom_x,geom_y)));
 855                         f.next("]");
 856                 }
 857                 else if(type == "invsize")
 858                 {
 859                         invsize.X = stoi(f.next(","));
 860                         invsize.Y = stoi(f.next(";"));
 861                         infostream<<"invsize ("<<invsize.X<<","<<invsize.Y<<")"<<std::endl;
 862                         f.next("]");
 863                 }
 864                 else
 865                 {
 866                         // Ignore others
 867                         std::string ts = f.next("]");
 868                         infostream<<"Unknown DrawSpec: type="<<type<<", data=\""<<ts<<"\""
 869                                         <<std::endl;
 870                 }
 871         }
 872
 873         return invsize;
 874 }
 875