src/guiFormSpecMenu.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20
  21 #include "guiFormSpecMenu.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 #include "tile.h" // ITextureSource
  33 #include "util/string.h"
  34 #include "util/numeric.h"
  35
  36 #include "gettext.h"
  37
  38 void drawItemStack(video::IVideoDriver *driver,
  39                 gui::IGUIFont *font,
  40                 const ItemStack &item,
  41                 const core::rect<s32> &rect,
  42                 const core::rect<s32> *clip,
  43                 IGameDef *gamedef)
  44 {
  45         if(item.empty())
  46                 return;
  47
  48         const ItemDefinition &def = item.getDefinition(gamedef->idef());
  49         video::ITexture *texture = gamedef->idef()->getInventoryTexture(def.name, gamedef);
  50
  51         // Draw the inventory texture
  52         if(texture != NULL)
  53         {
  54                 const video::SColor color(255,255,255,255);
  55                 const video::SColor colors[] = {color,color,color,color};
  56                 driver->draw2DImage(texture, rect,
  57                         core::rect<s32>(core::position2d<s32>(0,0),
  58                         core::dimension2di(texture->getOriginalSize())),
  59                         clip, colors, true);
  60         }
  61
  62         if(def.type == ITEM_TOOL && item.wear != 0)
  63         {
  64                 // Draw a progressbar
  65                 float barheight = rect.getHeight()/16;
  66                 float barpad_x = rect.getWidth()/16;
  67                 float barpad_y = rect.getHeight()/16;
  68                 core::rect<s32> progressrect(
  69                         rect.UpperLeftCorner.X + barpad_x,
  70                         rect.LowerRightCorner.Y - barpad_y - barheight,
  71                         rect.LowerRightCorner.X - barpad_x,
  72                         rect.LowerRightCorner.Y - barpad_y);
  73
  74                 // Shrink progressrect by amount of tool damage
  75                 float wear = item.wear / 65535.0;
  76                 int progressmid =
  77                         wear * progressrect.UpperLeftCorner.X +
  78                         (1-wear) * progressrect.LowerRightCorner.X;
  79
  80                 // Compute progressbar color
  81                 //   wear = 0.0: green
  82                 //   wear = 0.5: yellow
  83                 //   wear = 1.0: red
  84                 video::SColor color(255,255,255,255);
  85                 int wear_i = MYMIN(floor(wear * 600), 511);
  86                 wear_i = MYMIN(wear_i + 10, 511);
  87                 if(wear_i <= 255)
  88                         color.set(255, wear_i, 255, 0);
  89                 else
  90                         color.set(255, 255, 511-wear_i, 0);
  91
  92                 core::rect<s32> progressrect2 = progressrect;
  93                 progressrect2.LowerRightCorner.X = progressmid;
  94                 driver->draw2DRectangle(color, progressrect2, clip);
  95
  96                 color = video::SColor(255,0,0,0);
  97                 progressrect2 = progressrect;
  98                 progressrect2.UpperLeftCorner.X = progressmid;
  99                 driver->draw2DRectangle(color, progressrect2, clip);
 100         }
 101
 102         if(font != NULL && item.count >= 2)
 103         {
 104                 // Get the item count as a string
 105                 std::string text = itos(item.count);
 106                 v2u32 dim = font->getDimension(narrow_to_wide(text).c_str());
 107                 v2s32 sdim(dim.X,dim.Y);
 108
 109                 core::rect<s32> rect2(
 110                         /*rect.UpperLeftCorner,
 111                         core::dimension2d<u32>(rect.getWidth(), 15)*/
 112                         rect.LowerRightCorner - sdim,
 113                         sdim
 114                 );
 115
 116                 video::SColor bgcolor(128,0,0,0);
 117                 driver->draw2DRectangle(bgcolor, rect2, clip);
 118
 119                 video::SColor color(255,255,255,255);
 120                 font->draw(text.c_str(), rect2, color, false, false, clip);
 121         }
 122 }
 123
 124 /*
 125         GUIFormSpecMenu
 126 */
 127
 128 GUIFormSpecMenu::GUIFormSpecMenu(irr::IrrlichtDevice* dev,
 129                 gui::IGUIElement* parent, s32 id,
 130                 IMenuManager *menumgr,
 131                 InventoryManager *invmgr,
 132                 IGameDef *gamedef
 133 ):
 134         GUIModalMenu(dev->getGUIEnvironment(), parent, id, menumgr),
 135         m_device(dev),
 136         m_invmgr(invmgr),
 137         m_gamedef(gamedef),
 138         m_form_src(NULL),
 139         m_text_dst(NULL),
 140         m_selected_item(NULL),
 141         m_selected_amount(0),
 142         m_selected_dragging(false),
 143         m_tooltip_element(NULL)
 144 {
 145 }
 146
 147 GUIFormSpecMenu::~GUIFormSpecMenu()
 148 {
 149         removeChildren();
 150
 151         delete m_selected_item;
 152         delete m_form_src;
 153         delete m_text_dst;
 154 }
 155
 156 void GUIFormSpecMenu::removeChildren()
 157 {
 158         const core::list<gui::IGUIElement*> &children = getChildren();
 159         core::list<gui::IGUIElement*> children_copy;
 160         for(core::list<gui::IGUIElement*>::ConstIterator
 161                         i = children.begin(); i != children.end(); i++)
 162         {
 163                 children_copy.push_back(*i);
 164         }
 165         for(core::list<gui::IGUIElement*>::Iterator
 166                         i = children_copy.begin();
 167                         i != children_copy.end(); i++)
 168         {
 169                 (*i)->remove();
 170         }
 171         /*{
 172                 gui::IGUIElement *e = getElementFromId(256);
 173                 if(e != NULL)
 174                         e->remove();
 175         }*/
 176         if(m_tooltip_element)
 177         {
 178                 m_tooltip_element->remove();
 179                 m_tooltip_element = NULL;
 180         }
 181 }
 182
 183 void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
 184 {
 185         // Remove children
 186         removeChildren();
 187
 188         v2s32 size(100,100);
 189         s32 helptext_h = 15;
 190         core::rect<s32> rect;
 191
 192         // Base position of contents of form
 193         v2s32 basepos = getBasePos();
 194         // State of basepos, 0 = not set, 1= set by formspec, 2 = set by size[] element
 195         // Used to adjust form size automatically if needed
 196         // A proceed button is added if there is no size[] element
 197         int bp_set = 0;
 198
 199         /* Convert m_init_draw_spec to m_inventorylists */
 200
 201         m_inventorylists.clear();
 202         m_images.clear();
 203         m_backgrounds.clear();
 204         m_itemimages.clear();
 205         m_fields.clear();
 206
 207         Strfnd f(m_formspec_string);
 208         while(f.atend() == false)
 209         {
 210                 std::string type = trim(f.next_esc("["));
 211                 if(type == "invsize" || type == "size")
 212                 {
 213                         v2f invsize;
 214                         invsize.X = stof(f.next_esc(","));
 215                         if(type == "size")
 216                         {
 217                                 invsize.Y = stof(f.next_esc("]"));
 218                         }
 219                         else{
 220                                 invsize.Y = stof(f.next_esc(";"));
 221                                 f.next_esc("]");
 222                         }
 223                         infostream<<"Form size ("<<invsize.X<<","<<invsize.Y<<")"<<std::endl;
 224
 225                         padding = v2s32(screensize.Y/40, screensize.Y/40);
 226                         spacing = v2s32(screensize.Y/12, screensize.Y/13);
 227                         imgsize = v2s32(screensize.Y/15, screensize.Y/15);
 228                         size = v2s32(
 229                                 padding.X*2+spacing.X*(invsize.X-1.0)+imgsize.X,
 230                                 padding.Y*2+spacing.Y*(invsize.Y-1.0)+imgsize.Y + (helptext_h-5)
 231                         );
 232                         rect = core::rect<s32>(
 233                                         screensize.X/2 - size.X/2,
 234                                         screensize.Y/2 - size.Y/2,
 235                                         screensize.X/2 + size.X/2,
 236                                         screensize.Y/2 + size.Y/2
 237                         );
 238                         DesiredRect = rect;
 239                         recalculateAbsolutePosition(false);
 240                         basepos = getBasePos();
 241                         bp_set = 2;
 242                 }
 243                 else if(type == "list")
 244                 {
 245                         std::string name = f.next_esc(";");
 246                         InventoryLocation loc;
 247                         if(name == "context" || name == "current_name")
 248                                 loc = m_current_inventory_location;
 249                         else
 250                                 loc.deSerialize(name);
 251                         std::string listname = f.next_esc(";");
 252                         v2s32 pos = basepos;
 253                         pos.X += stof(f.next_esc(",")) * (float)spacing.X;
 254                         pos.Y += stof(f.next_esc(";")) * (float)spacing.Y;
 255                         v2s32 geom;
 256                         geom.X = stoi(f.next_esc(","));
 257                         geom.Y = stoi(f.next_esc(";"));
 258                         infostream<<"list inv="<<name<<", listname="<<listname
 259                                         <<", pos=("<<pos.X<<","<<pos.Y<<")"
 260                                         <<", geom=("<<geom.X<<","<<geom.Y<<")"
 261                                         <<std::endl;
 262                         std::string start_i_s = f.next_esc("]");
 263                         s32 start_i = 0;
 264                         if(start_i_s != "")
 265                                 start_i = stoi(start_i_s);
 266                         if(bp_set != 2)
 267                                 errorstream<<"WARNING: invalid use of list without a size[] element"<<std::endl;
 268                         m_inventorylists.push_back(ListDrawSpec(loc, listname, pos, geom, start_i));
 269                 }
 270                 else if(type == "image")
 271                 {
 272                         v2s32 pos = basepos;
 273                         pos.X += stof(f.next_esc(",")) * (float)spacing.X;
 274                         pos.Y += stof(f.next_esc(";")) * (float)spacing.Y;
 275                         v2s32 geom;
 276                         geom.X = stof(f.next_esc(",")) * (float)imgsize.X;
 277                         geom.Y = stof(f.next_esc(";")) * (float)imgsize.Y;
 278                         std::string name = f.next_esc("]");
 279                         infostream<<"image name="<<name
 280                                         <<", pos=("<<pos.X<<","<<pos.Y<<")"
 281                                         <<", geom=("<<geom.X<<","<<geom.Y<<")"
 282                                         <<std::endl;
 283                         if(bp_set != 2)
 284                                 errorstream<<"WARNING: invalid use of image without a size[] element"<<std::endl;
 285                         m_images.push_back(ImageDrawSpec(name, pos, geom));
 286                 }
 287                 else if(type == "item_image")
 288                 {
 289                         v2s32 pos = basepos;
 290                         pos.X += stof(f.next_esc(",")) * (float)spacing.X;
 291                         pos.Y += stof(f.next_esc(";")) * (float)spacing.Y;
 292                         v2s32 geom;
 293                         geom.X = stof(f.next_esc(",")) * (float)imgsize.X;
 294                         geom.Y = stof(f.next_esc(";")) * (float)imgsize.Y;
 295                         std::string name = f.next_esc("]");
 296                         infostream<<"item name="<<name
 297                                         <<", pos=("<<pos.X<<","<<pos.Y<<")"
 298                                         <<", geom=("<<geom.X<<","<<geom.Y<<")"
 299                                         <<std::endl;
 300                         if(bp_set != 2)
 301                                 errorstream<<"WARNING: invalid use of item_image without a size[] element"<<std::endl;
 302                         m_itemimages.push_back(ImageDrawSpec(name, pos, geom));
 303                 }
 304                 else if(type == "background")
 305                 {
 306                         v2s32 pos = basepos;
 307                         pos.X += stof(f.next_esc(",")) * (float)spacing.X - ((float)spacing.X-(float)imgsize.X)/2;
 308                         pos.Y += stof(f.next_esc(";")) * (float)spacing.Y - ((float)spacing.Y-(float)imgsize.Y)/2;
 309                         v2s32 geom;
 310                         geom.X = stof(f.next_esc(",")) * (float)spacing.X;
 311                         geom.Y = stof(f.next_esc(";")) * (float)spacing.Y;
 312                         std::string name = f.next_esc("]");
 313                         infostream<<"image name="<<name
 314                                         <<", pos=("<<pos.X<<","<<pos.Y<<")"
 315                                         <<", geom=("<<geom.X<<","<<geom.Y<<")"
 316                                         <<std::endl;
 317                         if(bp_set != 2)
 318                                 errorstream<<"WARNING: invalid use of background without a size[] element"<<std::endl;
 319                         m_backgrounds.push_back(ImageDrawSpec(name, pos, geom));
 320                 }
 321                 else if(type == "field" || type == "textarea")
 322                 {
 323                         std::string fname = f.next_esc(";");
 324                         std::string flabel = f.next_esc(";");
 325
 326                         if(fname.find(",") == std::string::npos && flabel.find(",") == std::string::npos)
 327                         {
 328                                 if (type == "textarea")
 329                                         errorstream<<"WARNING: Textarea connot be unpositioned"<<std::endl;
 330
 331                                 if(!bp_set)
 332                                 {
 333                                         rect = core::rect<s32>(
 334                                                 screensize.X/2 - 580/2,
 335                                                 screensize.Y/2 - 300/2,
 336                                                 screensize.X/2 + 580/2,
 337                                                 screensize.Y/2 + 300/2
 338                                         );
 339                                         DesiredRect = rect;
 340                                         recalculateAbsolutePosition(false);
 341                                         basepos = getBasePos();
 342                                         bp_set = 1;
 343                                 }
 344                                 else if(bp_set == 2)
 345                                         errorstream<<"WARNING: invalid use of unpositioned "<<type<<" in inventory"<<std::endl;
 346
 347                                 v2s32 pos = basepos;
 348                                 pos.Y = ((m_fields.size()+2)*60);
 349                                 v2s32 size = DesiredRect.getSize();
 350                                 rect = core::rect<s32>(size.X/2-150, pos.Y, (size.X/2-150)+300, pos.Y+30);
 351                         }
 352                         else
 353                         {
 354                                 v2s32 pos;
 355                                 pos.X = stof(fname.substr(0,fname.find(","))) * (float)spacing.X;
 356                                 pos.Y = stof(fname.substr(fname.find(",")+1)) * (float)spacing.Y;
 357                                 v2s32 geom;
 358                                 geom.X = (stof(flabel.substr(0,flabel.find(","))) * (float)spacing.X)-(spacing.X-imgsize.X);
 359                                 if (type == "textarea")
 360                                 {
 361                                         geom.Y = (stof(flabel.substr(flabel.find(",")+1)) * (float)imgsize.Y) - (spacing.Y-imgsize.Y);
 362                                         pos.Y += 15;
 363                                 }
 364                                 else
 365                                 {
 366                                         pos.Y += (stof(flabel.substr(flabel.find(",")+1)) * (float)imgsize.Y)/2;
 367                                         pos.Y -= 15;
 368                                         geom.Y = 30;
 369                                 }
 370
 371                                 rect = core::rect<s32>(pos.X, pos.Y, pos.X+geom.X, pos.Y+geom.Y);
 372
 373
 374
 375                                 fname = f.next_esc(";");
 376                                 flabel = f.next_esc(";");
 377                                 if(bp_set != 2)
 378                                         errorstream<<"WARNING: invalid use of positioned "<<type<<" without a size[] element"<<std::endl;
 379
 380                         }
 381
 382                         std::string odefault = f.next_esc("]");
 383                         std::string fdefault;
 384
 385                         // fdefault may contain a variable reference, which
 386                         // needs to be resolved from the node metadata
 387                         if(m_form_src)
 388                                 fdefault = m_form_src->resolveText(odefault);
 389                         else
 390                                 fdefault = odefault;
 391
 392                         fdefault = unescape_string(fdefault);
 393                         flabel = unescape_string(flabel);
 394
 395                         FieldSpec spec = FieldSpec(
 396                                 narrow_to_wide(fname.c_str()),
 397                                 narrow_to_wide(flabel.c_str()),
 398                                 narrow_to_wide(fdefault.c_str()),
 399                                 258+m_fields.size()
 400                         );
 401
 402                         // three cases: field name and no label, label and field, label name and no field
 403                         gui::IGUIEditBox *e;
 404                         if (fname == "")
 405                         {
 406                                 // spec field id to 0, this stops submit searching for a value that isn't there
 407                                 Environment->addStaticText(spec.flabel.c_str(), rect, false, true, this, spec.fid);
 408                         }
 409                         else
 410                         {
 411                                 spec.send = true;
 412                                 e = Environment->addEditBox(spec.fdefault.c_str(), rect, true, this, spec.fid);
 413                                 Environment->setFocus(e);
 414
 415                                 if (type == "textarea")
 416                                 {
 417                                         e->setMultiLine(true);
 418                                         e->setTextAlignment(gui::EGUIA_UPPERLEFT, gui::EGUIA_UPPERLEFT);
 419                                 } else {
 420                                         irr::SEvent evt;
 421                                         evt.EventType = EET_KEY_INPUT_EVENT;
 422                                         evt.KeyInput.Key = KEY_END;
 423                                         evt.KeyInput.PressedDown = true;
 424                                         evt.KeyInput.Char = 0;
 425                                         evt.KeyInput.Control = 0;
 426                                         evt.KeyInput.Shift = 0;
 427                                         e->OnEvent(evt);
 428                                 }
 429
 430                                 if (flabel != "")
 431                                 {
 432                                         rect.UpperLeftCorner.Y -= 15;
 433                                         rect.LowerRightCorner.Y = rect.UpperLeftCorner.Y + 15;
 434                                         Environment->addStaticText(spec.flabel.c_str(), rect, false, true, this, 0);
 435                                 }
 436                         }
 437
 438                         m_fields.push_back(spec);
 439                 }
 440                 else if(type == "label")
 441                 {
 442                         v2s32 pos = padding;
 443                         pos.X += stof(f.next_esc(",")) * (float)spacing.X;
 444                         pos.Y += stof(f.next_esc(";")) * (float)spacing.Y;
 445
 446                         rect = core::rect<s32>(pos.X, pos.Y+((imgsize.Y/2)-15), pos.X+300, pos.Y+((imgsize.Y/2)+15));
 447
 448                         std::string flabel = f.next_esc("]");
 449                         if(bp_set != 2)
 450                                 errorstream<<"WARNING: invalid use of label without a size[] element"<<std::endl;
 451
 452                         flabel = unescape_string(flabel);
 453
 454                         FieldSpec spec = FieldSpec(
 455                                 narrow_to_wide(""),
 456                                 narrow_to_wide(flabel.c_str()),
 457                                 narrow_to_wide(""),
 458                                 258+m_fields.size()
 459                         );
 460                         Environment->addStaticText(spec.flabel.c_str(), rect, false, true, this, spec.fid);
 461                         m_fields.push_back(spec);
 462                 }
 463                 else if(type == "button" || type == "button_exit")
 464                 {
 465                         v2s32 pos = padding;
 466                         pos.X += stof(f.next_esc(",")) * (float)spacing.X;
 467                         pos.Y += stof(f.next_esc(";")) * (float)spacing.Y;
 468                         v2s32 geom;
 469                         geom.X = (stof(f.next_esc(",")) * (float)spacing.X)-(spacing.X-imgsize.X);
 470                         pos.Y += (stof(f.next_esc(";")) * (float)imgsize.Y)/2;
 471
 472                         rect = core::rect<s32>(pos.X, pos.Y-15, pos.X+geom.X, pos.Y+15);
 473
 474                         std::string fname = f.next_esc(";");
 475                         std::string flabel = f.next_esc("]");
 476                         if(bp_set != 2)
 477                                 errorstream<<"WARNING: invalid use of button without a size[] element"<<std::endl;
 478
 479                         flabel = unescape_string(flabel);
 480
 481                         FieldSpec spec = FieldSpec(
 482                                 narrow_to_wide(fname.c_str()),
 483                                 narrow_to_wide(flabel.c_str()),
 484                                 narrow_to_wide(""),
 485                                 258+m_fields.size()
 486                         );
 487                         spec.is_button = true;
 488                         if(type == "button_exit")
 489                                 spec.is_exit = true;
 490                         Environment->addButton(rect, this, spec.fid, spec.flabel.c_str());
 491                         m_fields.push_back(spec);
 492                 }
 493                 else if(type == "image_button" || type == "image_button_exit")
 494                 {
 495                         v2s32 pos = padding;
 496                         pos.X += stof(f.next_esc(",")) * (float)spacing.X;
 497                         pos.Y += stof(f.next_esc(";")) * (float)spacing.Y;
 498                         v2s32 geom;
 499                         geom.X = (stof(f.next_esc(",")) * (float)spacing.X)-(spacing.X-imgsize.X);
 500                         geom.Y = (stof(f.next_esc(";")) * (float)spacing.Y)-(spacing.Y-imgsize.Y);
 501
 502                         rect = core::rect<s32>(pos.X, pos.Y, pos.X+geom.X, pos.Y+geom.Y);
 503
 504                         std::string fimage = f.next_esc(";");
 505                         std::string fname = f.next_esc(";");
 506                         std::string flabel = f.next_esc("]");
 507                         if(bp_set != 2)
 508                                 errorstream<<"WARNING: invalid use of image_button without a size[] element"<<std::endl;
 509
 510                         flabel = unescape_string(flabel);
 511
 512                         FieldSpec spec = FieldSpec(
 513                                 narrow_to_wide(fname.c_str()),
 514                                 narrow_to_wide(flabel.c_str()),
 515                                 narrow_to_wide(fimage.c_str()),
 516                                 258+m_fields.size()
 517                         );
 518                         spec.is_button = true;
 519                         if(type == "image_button_exit")
 520                                 spec.is_exit = true;
 521
 522                         video::ITexture *texture = m_gamedef->tsrc()->getTextureRaw(fimage);
 523                         gui::IGUIButton *e = Environment->addButton(rect, this, spec.fid, spec.flabel.c_str());
 524                         e->setUseAlphaChannel(true);
 525                         e->setImage(texture);
 526                         e->setPressedImage(texture);
 527                         e->setScaleImage(true);
 528
 529                         m_fields.push_back(spec);
 530                 }
 531                 else if(type == "item_image_button")
 532                 {
 533                         v2s32 pos = padding;
 534                         pos.X += stof(f.next_esc(",")) * (float)spacing.X;
 535                         pos.Y += stof(f.next_esc(";")) * (float)spacing.Y;
 536                         v2s32 geom;
 537                         geom.X = (stof(f.next_esc(",")) * (float)spacing.X)-(spacing.X-imgsize.X);
 538                         geom.Y = (stof(f.next_esc(";")) * (float)spacing.Y)-(spacing.Y-imgsize.Y);
 539                         rect = core::rect<s32>(pos.X, pos.Y, pos.X+geom.X, pos.Y+geom.Y);
 540                         std::string fimage = f.next_esc(";");
 541                         std::string fname = f.next_esc(";");
 542                         std::string flabel = f.next_esc("]");
 543                         if(bp_set != 2)
 544                                 errorstream<<"WARNING: invalid use of item_image_button without a size[] element"<<std::endl;
 545                         IItemDefManager *idef = m_gamedef->idef();
 546                         ItemStack item;
 547                         item.deSerialize(fimage, idef);
 548                         video::ITexture *texture = idef->getInventoryTexture(item.getDefinition(idef).name, m_gamedef);
 549                         std::string tooltip = item.getDefinition(idef).description;
 550                         flabel = unescape_string(flabel);
 551                         FieldSpec spec = FieldSpec(
 552                                 narrow_to_wide(fname.c_str()),
 553                                 narrow_to_wide(flabel.c_str()),
 554                                 narrow_to_wide(fimage.c_str()),
 555                                 258+m_fields.size()
 556                         );
 557                         gui::IGUIButton *e = Environment->addButton(rect, this, spec.fid, spec.flabel.c_str());
 558                         e->setUseAlphaChannel(true);
 559                         e->setImage(texture);
 560                         e->setPressedImage(texture);
 561                         e->setScaleImage(true);
 562                         spec.is_button = true;
 563                         rect+=basepos-padding;
 564                         spec.rect=rect;
 565                         if (tooltip!="")
 566                                 spec.tooltip=tooltip;
 567                         m_fields.push_back(spec);
 568                 }
 569                 else
 570                 {
 571                         // Ignore others
 572                         std::string ts = f.next_esc("]");
 573                         infostream<<"Unknown DrawSpec: type="<<type<<", data=\""<<ts<<"\""
 574                                         <<std::endl;
 575                 }
 576         }
 577
 578         // If there's inventory, put the usage string at the bottom
 579         if (m_inventorylists.size())
 580         {
 581                 changeCtype("");
 582                 core::rect<s32> rect(0, 0, size.X-padding.X*2, helptext_h);
 583                 rect = rect + v2s32(size.X/2 - rect.getWidth()/2,
 584                                 size.Y-rect.getHeight()-5);
 585                 const wchar_t *text = wgettext("Left click: Move all items, Right click: Move single item");
 586                 Environment->addStaticText(text, rect, false, true, this, 256);
 587                 delete[] text;
 588                 changeCtype("C");
 589         }
 590         // If there's fields, add a Proceed button
 591         if (m_fields.size() && bp_set != 2)
 592         {
 593                 // if the size wasn't set by an invsize[] or size[] adjust it now to fit all the fields
 594                 rect = core::rect<s32>(
 595                         screensize.X/2 - 580/2,
 596                         screensize.Y/2 - 300/2,
 597                         screensize.X/2 + 580/2,
 598                         screensize.Y/2 + 240/2+(m_fields.size()*60)
 599                 );
 600                 DesiredRect = rect;
 601                 recalculateAbsolutePosition(false);
 602                 basepos = getBasePos();
 603
 604                 changeCtype("");
 605                 {
 606                         v2s32 pos = basepos;
 607                         pos.Y = ((m_fields.size()+2)*60);
 608
 609                         v2s32 size = DesiredRect.getSize();
 610                         rect = core::rect<s32>(size.X/2-70, pos.Y, (size.X/2-70)+140, pos.Y+30);
 611                         wchar_t* text = wgettext("Proceed");
 612                         Environment->addButton(rect, this, 257, text);
 613                         delete[] text;
 614                 }
 615                 changeCtype("C");
 616         }
 617         // Add tooltip
 618         {
 619                 // Note: parent != this so that the tooltip isn't clipped by the menu rectangle
 620                 m_tooltip_element = Environment->addStaticText(L"",core::rect<s32>(0,0,110,18));
 621                 m_tooltip_element->enableOverrideColor(true);
 622                 m_tooltip_element->setBackgroundColor(video::SColor(255,110,130,60));
 623                 m_tooltip_element->setDrawBackground(true);
 624                 m_tooltip_element->setDrawBorder(true);
 625                 m_tooltip_element->setOverrideColor(video::SColor(255,255,255,255));
 626                 m_tooltip_element->setTextAlignment(gui::EGUIA_CENTER, gui::EGUIA_CENTER);
 627                 m_tooltip_element->setWordWrap(false);
 628         }
 629 }
 630
 631 GUIFormSpecMenu::ItemSpec GUIFormSpecMenu::getItemAtPos(v2s32 p) const
 632 {
 633         core::rect<s32> imgrect(0,0,imgsize.X,imgsize.Y);
 634
 635         for(u32 i=0; i<m_inventorylists.size(); i++)
 636         {
 637                 const ListDrawSpec &s = m_inventorylists[i];
 638
 639                 for(s32 i=0; i<s.geom.X*s.geom.Y; i++)
 640                 {
 641                         s32 item_i = i + s.start_item_i;
 642                         s32 x = (i%s.geom.X) * spacing.X;
 643                         s32 y = (i/s.geom.X) * spacing.Y;
 644                         v2s32 p0(x,y);
 645                         core::rect<s32> rect = imgrect + s.pos + p0;
 646                         if(rect.isPointInside(p))
 647                         {
 648                                 return ItemSpec(s.inventoryloc, s.listname, item_i);
 649                         }
 650                 }
 651         }
 652
 653         return ItemSpec(InventoryLocation(), "", -1);
 654 }
 655
 656 void GUIFormSpecMenu::drawList(const ListDrawSpec &s, int phase)
 657 {
 658         video::IVideoDriver* driver = Environment->getVideoDriver();
 659
 660         // Get font
 661         gui::IGUIFont *font = NULL;
 662         gui::IGUISkin* skin = Environment->getSkin();
 663         if (skin)
 664                 font = skin->getFont();
 665
 666         Inventory *inv = m_invmgr->getInventory(s.inventoryloc);
 667         if(!inv){
 668                 infostream<<"GUIFormSpecMenu::drawList(): WARNING: "
 669                                 <<"The inventory location "
 670                                 <<"\""<<s.inventoryloc.dump()<<"\" doesn't exist"
 671                                 <<std::endl;
 672                 return;
 673         }
 674         InventoryList *ilist = inv->getList(s.listname);
 675         if(!ilist){
 676                 infostream<<"GUIFormSpecMenu::drawList(): WARNING: "
 677                                 <<"The inventory list \""<<s.listname<<"\" @ \""
 678                                 <<s.inventoryloc.dump()<<"\" doesn't exist"
 679                                 <<std::endl;
 680                 return;
 681         }
 682
 683         core::rect<s32> imgrect(0,0,imgsize.X,imgsize.Y);
 684
 685         for(s32 i=0; i<s.geom.X*s.geom.Y; i++)
 686         {
 687                 u32 item_i = i + s.start_item_i;
 688                 if(item_i >= ilist->getSize())
 689                         break;
 690                 s32 x = (i%s.geom.X) * spacing.X;
 691                 s32 y = (i/s.geom.X) * spacing.Y;
 692                 v2s32 p(x,y);
 693                 core::rect<s32> rect = imgrect + s.pos + p;
 694                 ItemStack item;
 695                 if(ilist)
 696                         item = ilist->getItem(item_i);
 697
 698                 bool selected = m_selected_item
 699                         && m_invmgr->getInventory(m_selected_item->inventoryloc) == inv
 700                         && m_selected_item->listname == s.listname
 701                         && m_selected_item->i == item_i;
 702                 bool hovering = rect.isPointInside(m_pointer);
 703
 704                 if(phase == 0)
 705                 {
 706                         if(hovering && m_selected_item)
 707                         {
 708                                 video::SColor bgcolor(255,192,192,192);
 709                                 driver->draw2DRectangle(bgcolor, rect, &AbsoluteClippingRect);
 710                         }
 711                         else
 712                         {
 713                                 video::SColor bgcolor(255,128,128,128);
 714                                 driver->draw2DRectangle(bgcolor, rect, &AbsoluteClippingRect);
 715                         }
 716                 }
 717
 718                 if(phase == 1)
 719                 {
 720                         // Draw item stack
 721                         if(selected)
 722                         {
 723                                 item.takeItem(m_selected_amount);
 724                         }
 725                         if(!item.empty())
 726                         {
 727                                 drawItemStack(driver, font, item,
 728                                                 rect, &AbsoluteClippingRect, m_gamedef);
 729                         }
 730
 731                         // Draw tooltip
 732                         std::string tooltip_text = "";
 733                         if(hovering && !m_selected_item)
 734                                 tooltip_text = item.getDefinition(m_gamedef->idef()).description;
 735                         if(tooltip_text != "")
 736                         {
 737                                 m_tooltip_element->setVisible(true);
 738                                 this->bringToFront(m_tooltip_element);
 739                                 m_tooltip_element->setText(narrow_to_wide(tooltip_text).c_str());
 740                                 s32 tooltip_x = m_pointer.X + 15;
 741                                 s32 tooltip_y = m_pointer.Y + 15;
 742                                 s32 tooltip_width = m_tooltip_element->getTextWidth() + 15;
 743                                 s32 tooltip_height = m_tooltip_element->getTextHeight() + 5;
 744                                 m_tooltip_element->setRelativePosition(core::rect<s32>(
 745                                                 core::position2d<s32>(tooltip_x, tooltip_y),
 746                                                 core::dimension2d<s32>(tooltip_width, tooltip_height)));
 747                         }
 748                 }
 749         }
 750 }
 751
 752 void GUIFormSpecMenu::drawSelectedItem()
 753 {
 754         if(!m_selected_item)
 755                 return;
 756
 757         video::IVideoDriver* driver = Environment->getVideoDriver();
 758
 759         // Get font
 760         gui::IGUIFont *font = NULL;
 761         gui::IGUISkin* skin = Environment->getSkin();
 762         if (skin)
 763                 font = skin->getFont();
 764
 765         Inventory *inv = m_invmgr->getInventory(m_selected_item->inventoryloc);
 766         assert(inv);
 767         InventoryList *list = inv->getList(m_selected_item->listname);
 768         assert(list);
 769         ItemStack stack = list->getItem(m_selected_item->i);
 770         stack.count = m_selected_amount;
 771
 772         core::rect<s32> imgrect(0,0,imgsize.X,imgsize.Y);
 773         core::rect<s32> rect = imgrect + (m_pointer - imgrect.getCenter());
 774         drawItemStack(driver, font, stack, rect, NULL, m_gamedef);
 775 }
 776
 777 void GUIFormSpecMenu::drawMenu()
 778 {
 779         if(m_form_src){
 780                 std::string newform = m_form_src->getForm();
 781                 if(newform != m_formspec_string){
 782                         m_formspec_string = newform;
 783                         regenerateGui(m_screensize_old);
 784                 }
 785         }
 786
 787         m_pointer = m_device->getCursorControl()->getPosition();
 788
 789         updateSelectedItem();
 790
 791         gui::IGUISkin* skin = Environment->getSkin();
 792         if (!skin)
 793                 return;
 794         video::IVideoDriver* driver = Environment->getVideoDriver();
 795
 796         video::SColor bgcolor(140,0,0,0);
 797         driver->draw2DRectangle(bgcolor, AbsoluteRect, &AbsoluteClippingRect);
 798
 799         m_tooltip_element->setVisible(false);
 800
 801         /*
 802                 Draw backgrounds
 803         */
 804         for(u32 i=0; i<m_backgrounds.size(); i++)
 805         {
 806                 const ImageDrawSpec &spec = m_backgrounds[i];
 807                 video::ITexture *texture =
 808                                 m_gamedef->tsrc()->getTextureRaw(spec.name);
 809                 // Image size on screen
 810                 core::rect<s32> imgrect(0, 0, spec.geom.X, spec.geom.Y);
 811                 // Image rectangle on screen
 812                 core::rect<s32> rect = imgrect + spec.pos;
 813                 const video::SColor color(255,255,255,255);
 814                 const video::SColor colors[] = {color,color,color,color};
 815                 driver->draw2DImage(texture, rect,
 816                         core::rect<s32>(core::position2d<s32>(0,0),
 817                                         core::dimension2di(texture->getOriginalSize())),
 818                         NULL/*&AbsoluteClippingRect*/, colors, true);
 819         }
 820
 821         /*
 822                 Draw images
 823         */
 824         for(u32 i=0; i<m_images.size(); i++)
 825         {
 826                 const ImageDrawSpec &spec = m_images[i];
 827                 video::ITexture *texture =
 828                                 m_gamedef->tsrc()->getTextureRaw(spec.name);
 829                 // Image size on screen
 830                 core::rect<s32> imgrect(0, 0, spec.geom.X, spec.geom.Y);
 831                 // Image rectangle on screen
 832                 core::rect<s32> rect = imgrect + spec.pos;
 833                 const video::SColor color(255,255,255,255);
 834                 const video::SColor colors[] = {color,color,color,color};
 835                 driver->draw2DImage(texture, rect,
 836                         core::rect<s32>(core::position2d<s32>(0,0),
 837                                         core::dimension2di(texture->getOriginalSize())),
 838                         NULL/*&AbsoluteClippingRect*/, colors, true);
 839         }
 840
 841         /*
 842                 Draw item images
 843         */
 844         for(u32 i=0; i<m_itemimages.size(); i++)
 845         {
 846                 const ImageDrawSpec &spec = m_itemimages[i];
 847                 IItemDefManager *idef = m_gamedef->idef();
 848                 ItemStack item;
 849                 item.deSerialize(spec.name, idef);
 850                 video::ITexture *texture = idef->getInventoryTexture(item.getDefinition(idef).name, m_gamedef);
 851                 // Image size on screen
 852                 core::rect<s32> imgrect(0, 0, spec.geom.X, spec.geom.Y);
 853                 // Image rectangle on screen
 854                 core::rect<s32> rect = imgrect + spec.pos;
 855                 const video::SColor color(255,255,255,255);
 856                 const video::SColor colors[] = {color,color,color,color};
 857                 driver->draw2DImage(texture, rect,
 858                         core::rect<s32>(core::position2d<s32>(0,0),
 859                                         core::dimension2di(texture->getOriginalSize())),
 860                         NULL/*&AbsoluteClippingRect*/, colors, true);
 861         }
 862
 863         /*
 864                 Draw items
 865                 Phase 0: Item slot rectangles
 866                 Phase 1: Item images; prepare tooltip
 867                 If backgrounds used, do not draw Item slot rectangles
 868         */
 869         int start_phase=0;
 870         if (m_backgrounds.size() > 0) start_phase=1;
 871         for(int phase=start_phase; phase<=1; phase++)
 872         for(u32 i=0; i<m_inventorylists.size(); i++)
 873         {
 874                 drawList(m_inventorylists[i], phase);
 875         }
 876
 877         /*
 878                 Call base class
 879         */
 880         gui::IGUIElement::draw();
 881
 882         /*
 883                 Draw fields/buttons tooltips
 884         */
 885         for(u32 i=0; i<m_fields.size(); i++)
 886         {
 887                 const FieldSpec &spec = m_fields[i];
 888                 if (spec.tooltip != "")
 889                 {
 890                         core::rect<s32> rect = spec.rect;
 891                         if (rect.isPointInside(m_pointer))
 892                         {
 893                                 m_tooltip_element->setVisible(true);
 894                                 this->bringToFront(m_tooltip_element);
 895                                 m_tooltip_element->setText(narrow_to_wide(spec.tooltip).c_str());
 896                                 s32 tooltip_x = m_pointer.X + 15;
 897                                 s32 tooltip_y = m_pointer.Y + 15;
 898                                 s32 tooltip_width = m_tooltip_element->getTextWidth() + 15;
 899                                 s32 tooltip_height = m_tooltip_element->getTextHeight() + 5;
 900                                 m_tooltip_element->setRelativePosition(core::rect<s32>(
 901                                 core::position2d<s32>(tooltip_x, tooltip_y),
 902                                 core::dimension2d<s32>(tooltip_width, tooltip_height)));
 903                         }
 904                 }
 905         }
 906
 907         /*
 908                 Draw dragged item stack
 909         */
 910         drawSelectedItem();
 911 }
 912
 913 void GUIFormSpecMenu::updateSelectedItem()
 914 {
 915         // WARNING: BLACK MAGIC
 916         // See if there is a stack suited for our current guess.
 917         // If such stack does not exist, clear the guess.
 918         if(m_selected_content_guess.name != "")
 919         {
 920                 bool found = false;
 921                 for(u32 i=0; i<m_inventorylists.size() && !found; i++){
 922                         const ListDrawSpec &s = m_inventorylists[i];
 923                         Inventory *inv = m_invmgr->getInventory(s.inventoryloc);
 924                         if(!inv)
 925                                 continue;
 926                         InventoryList *list = inv->getList(s.listname);
 927                         if(!list)
 928                                 continue;
 929                         for(s32 i=0; i<s.geom.X*s.geom.Y && !found; i++){
 930                                 u32 item_i = i + s.start_item_i;
 931                                 if(item_i >= list->getSize())
 932                                         continue;
 933                                 ItemStack stack = list->getItem(item_i);
 934                                 if(stack.name == m_selected_content_guess.name &&
 935                                                 stack.count == m_selected_content_guess.count){
 936                                         found = true;
 937                                         if(m_selected_item){
 938                                                 // If guessed stack is already selected, all is fine
 939                                                 if(m_selected_item->inventoryloc == s.inventoryloc &&
 940                                                                 m_selected_item->listname == s.listname &&
 941                                                                 m_selected_item->i == (s32)item_i &&
 942                                                                 m_selected_amount == stack.count){
 943                                                         break;
 944                                                 }
 945                                                 delete m_selected_item;
 946                                                 m_selected_item = NULL;
 947                                         }
 948                                         infostream<<"Client: Changing selected content guess to "
 949                                                         <<s.inventoryloc.dump()<<" "<<s.listname
 950                                                         <<" "<<item_i<<std::endl;
 951                                         m_selected_item = new ItemSpec(s.inventoryloc, s.listname, item_i);
 952                                         m_selected_amount = stack.count;
 953                                         break;
 954                                 }
 955                         }
 956                 }
 957                 if(!found){
 958                         infostream<<"Client: Discarding selected content guess: "
 959                                         <<m_selected_content_guess.getItemString()<<std::endl;
 960                         m_selected_content_guess.name = "";
 961                 }
 962         }
 963         // If the selected stack has become empty for some reason, deselect it.
 964         // If the selected stack has become smaller, adjust m_selected_amount.
 965         if(m_selected_item)
 966         {
 967                 bool selection_valid = false;
 968                 if(m_selected_item->isValid())
 969                 {
 970                         Inventory *inv = m_invmgr->getInventory(m_selected_item->inventoryloc);
 971                         if(inv)
 972                         {
 973                                 InventoryList *list = inv->getList(m_selected_item->listname);
 974                                 if(list && (u32) m_selected_item->i < list->getSize())
 975                                 {
 976                                         ItemStack stack = list->getItem(m_selected_item->i);
 977                                         if(m_selected_amount > stack.count)
 978                                                 m_selected_amount = stack.count;
 979                                         if(!stack.empty())
 980                                                 selection_valid = true;
 981                                 }
 982                         }
 983                 }
 984                 if(!selection_valid)
 985                 {
 986                         delete m_selected_item;
 987                         m_selected_item = NULL;
 988                         m_selected_amount = 0;
 989                         m_selected_dragging = false;
 990                 }
 991         }
 992
 993         // If craftresult is nonempty and nothing else is selected, select it now.
 994         if(!m_selected_item)
 995         {
 996                 for(u32 i=0; i<m_inventorylists.size(); i++)
 997                 {
 998                         const ListDrawSpec &s = m_inventorylists[i];
 999                         if(s.listname == "craftpreview")
1000                         {
1001                                 Inventory *inv = m_invmgr->getInventory(s.inventoryloc);
1002                                 InventoryList *list = inv->getList("craftresult");
1003                                 if(list && list->getSize() >= 1 && !list->getItem(0).empty())
1004                                 {
1005                                         m_selected_item = new ItemSpec;
1006                                         m_selected_item->inventoryloc = s.inventoryloc;
1007                                         m_selected_item->listname = "craftresult";
1008                                         m_selected_item->i = 0;
1009                                         m_selected_amount = 0;
1010                                         m_selected_dragging = false;
1011                                         break;
1012                                 }
1013                         }
1014                 }
1015         }
1016
1017         // If craftresult is selected, keep the whole stack selected
1018         if(m_selected_item && m_selected_item->listname == "craftresult")
1019         {
1020                 Inventory *inv = m_invmgr->getInventory(m_selected_item->inventoryloc);
1021                 assert(inv);
1022                 InventoryList *list = inv->getList(m_selected_item->listname);
1023                 assert(list);
1024                 m_selected_amount = list->getItem(m_selected_item->i).count;
1025         }
1026 }
1027
1028 void GUIFormSpecMenu::acceptInput()
1029 {
1030         if(m_text_dst)
1031         {
1032                 std::map<std::string, std::string> fields;
1033                 gui::IGUIElement *e;
1034                 for(u32 i=0; i<m_fields.size(); i++)
1035                 {
1036                         const FieldSpec &s = m_fields[i];
1037                         if(s.send)
1038                         {
1039                                 if(s.is_button)
1040                                 {
1041                                         fields[wide_to_narrow(s.fname.c_str())] = wide_to_narrow(s.flabel.c_str());
1042                                 }
1043                                 else
1044                                 {
1045                                         e = getElementFromId(s.fid);
1046                                         if(e != NULL)
1047                                         {
1048                                                 fields[wide_to_narrow(s.fname.c_str())] = wide_to_narrow(e->getText());
1049                                         }
1050                                 }
1051                         }
1052                 }
1053                 m_text_dst->gotText(fields);
1054         }
1055 }
1056
1057 bool GUIFormSpecMenu::OnEvent(const SEvent& event)
1058 {
1059         if(event.EventType==EET_KEY_INPUT_EVENT)
1060         {
1061                 KeyPress kp(event.KeyInput);
1062                 if (event.KeyInput.PressedDown && (kp == EscapeKey ||
1063                         kp == getKeySetting("keymap_inventory")))
1064                 {
1065                         quitMenu();
1066                         return true;
1067                 }
1068                 if(event.KeyInput.Key==KEY_RETURN && event.KeyInput.PressedDown)
1069                 {
1070                         acceptInput();
1071                         quitMenu();
1072                         return true;
1073                 }
1074         }
1075         if(event.EventType==EET_MOUSE_INPUT_EVENT
1076                         && event.MouseInput.Event != EMIE_MOUSE_MOVED)
1077         {
1078                 // Mouse event other than movement
1079
1080                 // Get selected item and hovered/clicked item (s)
1081
1082                 updateSelectedItem();
1083                 ItemSpec s = getItemAtPos(m_pointer);
1084
1085                 Inventory *inv_selected = NULL;
1086                 Inventory *inv_s = NULL;
1087
1088                 if(m_selected_item)
1089                 {
1090                         inv_selected = m_invmgr->getInventory(m_selected_item->inventoryloc);
1091                         assert(inv_selected);
1092                         assert(inv_selected->getList(m_selected_item->listname) != NULL);
1093                 }
1094
1095                 u32 s_count = 0;
1096
1097                 if(s.isValid())
1098                 do{ // breakable
1099                         inv_s = m_invmgr->getInventory(s.inventoryloc);
1100
1101                         if(!inv_s){
1102                                 errorstream<<"InventoryMenu: The selected inventory location "
1103                                                 <<"\""<<s.inventoryloc.dump()<<"\" doesn't exist"
1104                                                 <<std::endl;
1105                                 s.i = -1;  // make it invalid again
1106                                 break;
1107                         }
1108
1109                         InventoryList *list = inv_s->getList(s.listname);
1110                         if(list == NULL){
1111                                 verbosestream<<"InventoryMenu: The selected inventory list \""
1112                                                 <<s.listname<<"\" does not exist"<<std::endl;
1113                                 s.i = -1;  // make it invalid again
1114                                 break;
1115                         }
1116
1117                         if((u32)s.i >= list->getSize()){
1118                                 infostream<<"InventoryMenu: The selected inventory list \""
1119                                                 <<s.listname<<"\" is too small (i="<<s.i<<", size="
1120                                                 <<list->getSize()<<")"<<std::endl;
1121                                 s.i = -1;  // make it invalid again
1122                                 break;
1123                         }
1124
1125                         s_count = list->getItem(s.i).count;
1126                 }while(0);
1127
1128                 bool identical = (m_selected_item != NULL) && s.isValid() &&
1129                         (inv_selected == inv_s) &&
1130                         (m_selected_item->listname == s.listname) &&
1131                         (m_selected_item->i == s.i);
1132
1133                 // buttons: 0 = left, 1 = right, 2 = middle
1134                 // up/down: 0 = down (press), 1 = up (release), 2 = unknown event
1135                 int button = 0;
1136                 int updown = 2;
1137                 if(event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN)
1138                         { button = 0; updown = 0; }
1139                 else if(event.MouseInput.Event == EMIE_RMOUSE_PRESSED_DOWN)
1140                         { button = 1; updown = 0; }
1141                 else if(event.MouseInput.Event == EMIE_MMOUSE_PRESSED_DOWN)
1142                         { button = 2; updown = 0; }
1143                 else if(event.MouseInput.Event == EMIE_LMOUSE_LEFT_UP)
1144                         { button = 0; updown = 1; }
1145                 else if(event.MouseInput.Event == EMIE_RMOUSE_LEFT_UP)
1146                         { button = 1; updown = 1; }
1147                 else if(event.MouseInput.Event == EMIE_MMOUSE_LEFT_UP)
1148                         { button = 2; updown = 1; }
1149
1150                 // Set this number to a positive value to generate a move action
1151                 // from m_selected_item to s.
1152                 u32 move_amount = 0;
1153
1154                 // Set this number to a positive value to generate a drop action
1155                 // from m_selected_item.
1156                 u32 drop_amount = 0;
1157
1158                 // Set this number to a positive value to generate a craft action at s.
1159                 u32 craft_amount = 0;
1160
1161                 if(updown == 0)
1162                 {
1163                         // Some mouse button has been pressed
1164
1165                         //infostream<<"Mouse button "<<button<<" pressed at p=("
1166                         //      <<p.X<<","<<p.Y<<")"<<std::endl;
1167
1168                         m_selected_dragging = false;
1169
1170                         if(s.isValid() && s.listname == "craftpreview")
1171                         {
1172                                 // Craft preview has been clicked: craft
1173                                 craft_amount = (button == 2 ? 10 : 1);
1174                         }
1175                         else if(m_selected_item == NULL)
1176                         {
1177                                 if(s_count != 0)
1178                                 {
1179                                         // Non-empty stack has been clicked: select it
1180                                         m_selected_item = new ItemSpec(s);
1181
1182                                         if(button == 1)  // right
1183                                                 m_selected_amount = (s_count + 1) / 2;
1184                                         else if(button == 2)  // middle
1185                                                 m_selected_amount = MYMIN(s_count, 10);
1186                                         else  // left
1187                                                 m_selected_amount = s_count;
1188
1189                                         m_selected_dragging = true;
1190                                 }
1191                         }
1192                         else  // m_selected_item != NULL
1193                         {
1194                                 assert(m_selected_amount >= 1);
1195
1196                                 if(s.isValid())
1197                                 {
1198                                         // Clicked a slot: move
1199                                         if(button == 1)  // right
1200                                                 move_amount = 1;
1201                                         else if(button == 2)  // middle
1202                                                 move_amount = MYMIN(m_selected_amount, 10);
1203                                         else  // left
1204                                                 move_amount = m_selected_amount;
1205
1206                                         if(identical)
1207                                         {
1208                                                 if(move_amount >= m_selected_amount)
1209                                                         m_selected_amount = 0;
1210                                                 else
1211                                                         m_selected_amount -= move_amount;
1212                                                 move_amount = 0;
1213                                         }
1214                                 }
1215                                 else if(getAbsoluteClippingRect().isPointInside(m_pointer))
1216                                 {
1217                                         // Clicked somewhere else: deselect
1218                                         m_selected_amount = 0;
1219                                 }
1220                                 else
1221                                 {
1222                                         // Clicked outside of the window: drop
1223                                         if(button == 1)  // right
1224                                                 drop_amount = 1;
1225                                         else if(button == 2)  // middle
1226                                                 drop_amount = MYMIN(m_selected_amount, 10);
1227                                         else  // left
1228                                                 drop_amount = m_selected_amount;
1229                                 }
1230                         }
1231                 }
1232                 else if(updown == 1)
1233                 {
1234                         // Some mouse button has been released
1235
1236                         //infostream<<"Mouse button "<<button<<" released at p=("
1237                         //      <<p.X<<","<<p.Y<<")"<<std::endl;
1238
1239                         if(m_selected_item != NULL && m_selected_dragging && s.isValid())
1240                         {
1241                                 if(!identical)
1242                                 {
1243                                         // Dragged to different slot: move all selected
1244                                         move_amount = m_selected_amount;
1245                                 }
1246                         }
1247                         else if(m_selected_item != NULL && m_selected_dragging &&
1248                                 !(getAbsoluteClippingRect().isPointInside(m_pointer)))
1249                         {
1250                                 // Dragged outside of window: drop all selected
1251                                 drop_amount = m_selected_amount;
1252                         }
1253
1254                         m_selected_dragging = false;
1255                 }
1256
1257                 // Possibly send inventory action to server
1258                 if(move_amount > 0)
1259                 {
1260                         // Send IACTION_MOVE
1261
1262                         assert(m_selected_item && m_selected_item->isValid());
1263                         assert(s.isValid());
1264
1265                         assert(inv_selected && inv_s);
1266                         InventoryList *list_from = inv_selected->getList(m_selected_item->listname);
1267                         InventoryList *list_to = inv_s->getList(s.listname);
1268                         assert(list_from && list_to);
1269                         ItemStack stack_from = list_from->getItem(m_selected_item->i);
1270                         ItemStack stack_to = list_to->getItem(s.i);
1271
1272                         // Check how many items can be moved
1273                         move_amount = stack_from.count = MYMIN(move_amount, stack_from.count);
1274                         ItemStack leftover = stack_to.addItem(stack_from, m_gamedef->idef());
1275                         // If source stack cannot be added to destination stack at all,
1276                         // they are swapped
1277                         if(leftover.count == stack_from.count && leftover.name == stack_from.name)
1278                         {
1279                                 m_selected_amount = stack_to.count;
1280                                 // In case the server doesn't directly swap them but instead
1281                                 // moves stack_to somewhere else, set this
1282                                 m_selected_content_guess = stack_to;
1283                                 m_selected_content_guess_inventory = s.inventoryloc;
1284                         }
1285                         // Source stack goes fully into destination stack
1286                         else if(leftover.empty())
1287                         {
1288                                 m_selected_amount -= move_amount;
1289                                 m_selected_content_guess = ItemStack(); // Clear
1290                         }
1291                         // Source stack goes partly into destination stack
1292                         else
1293                         {
1294                                 move_amount -= leftover.count;
1295                                 m_selected_amount -= move_amount;
1296                                 m_selected_content_guess = ItemStack(); // Clear
1297                         }
1298
1299                         infostream<<"Handing IACTION_MOVE to manager"<<std::endl;
1300                         IMoveAction *a = new IMoveAction();
1301                         a->count = move_amount;
1302                         a->from_inv = m_selected_item->inventoryloc;
1303                         a->from_list = m_selected_item->listname;
1304                         a->from_i = m_selected_item->i;
1305                         a->to_inv = s.inventoryloc;
1306                         a->to_list = s.listname;
1307                         a->to_i = s.i;
1308                         m_invmgr->inventoryAction(a);
1309                 }
1310                 else if(drop_amount > 0)
1311                 {
1312                         m_selected_content_guess = ItemStack(); // Clear
1313
1314                         // Send IACTION_DROP
1315
1316                         assert(m_selected_item && m_selected_item->isValid());
1317                         assert(inv_selected);
1318                         InventoryList *list_from = inv_selected->getList(m_selected_item->listname);
1319                         assert(list_from);
1320                         ItemStack stack_from = list_from->getItem(m_selected_item->i);
1321
1322                         // Check how many items can be dropped
1323                         drop_amount = stack_from.count = MYMIN(drop_amount, stack_from.count);
1324                         assert(drop_amount > 0 && drop_amount <= m_selected_amount);
1325                         m_selected_amount -= drop_amount;
1326
1327                         infostream<<"Handing IACTION_DROP to manager"<<std::endl;
1328                         IDropAction *a = new IDropAction();
1329                         a->count = drop_amount;
1330                         a->from_inv = m_selected_item->inventoryloc;
1331                         a->from_list = m_selected_item->listname;
1332                         a->from_i = m_selected_item->i;
1333                         m_invmgr->inventoryAction(a);
1334                 }
1335                 else if(craft_amount > 0)
1336                 {
1337                         m_selected_content_guess = ItemStack(); // Clear
1338
1339                         // Send IACTION_CRAFT
1340
1341                         assert(s.isValid());
1342                         assert(inv_s);
1343
1344                         infostream<<"Handing IACTION_CRAFT to manager"<<std::endl;
1345                         ICraftAction *a = new ICraftAction();
1346                         a->count = craft_amount;
1347                         a->craft_inv = s.inventoryloc;
1348                         m_invmgr->inventoryAction(a);
1349                 }
1350
1351                 // If m_selected_amount has been decreased to zero, deselect
1352                 if(m_selected_amount == 0)
1353                 {
1354                         delete m_selected_item;
1355                         m_selected_item = NULL;
1356                         m_selected_amount = 0;
1357                         m_selected_dragging = false;
1358                         m_selected_content_guess = ItemStack();
1359                 }
1360         }
1361         if(event.EventType==EET_GUI_EVENT)
1362         {
1363                 if(event.GUIEvent.EventType==gui::EGET_ELEMENT_FOCUS_LOST
1364                                 && isVisible())
1365                 {
1366                         if(!canTakeFocus(event.GUIEvent.Element))
1367                         {
1368                                 infostream<<"GUIFormSpecMenu: Not allowing focus change."
1369                                                 <<std::endl;
1370                                 // Returning true disables focus change
1371                                 return true;
1372                         }
1373                 }
1374                 if(event.GUIEvent.EventType==gui::EGET_BUTTON_CLICKED)
1375                 {
1376                         switch(event.GUIEvent.Caller->getID())
1377                         {
1378                         case 257:
1379                                 acceptInput();
1380                                 quitMenu();
1381                                 // quitMenu deallocates menu
1382                                 return true;
1383                         }
1384                         // find the element that was clicked
1385                         for(u32 i=0; i<m_fields.size(); i++)
1386                         {
1387                                 FieldSpec &s = m_fields[i];
1388                                 // if its a button, set the send field so
1389                                 // lua knows which button was pressed
1390                                 if (s.is_button && s.fid == event.GUIEvent.Caller->getID())
1391                                 {
1392                                         s.send = true;
1393                                         acceptInput();
1394                                         if(s.is_exit){
1395                                                 quitMenu();
1396                                                 return true;
1397                                         }else{
1398                                                 s.send = false;
1399                                                 // Restore focus to the full form
1400                                                 Environment->setFocus(this);
1401                                                 return true;
1402                                         }
1403                                 }
1404                         }
1405                 }
1406                 if(event.GUIEvent.EventType==gui::EGET_EDITBOX_ENTER)
1407                 {
1408                         if(event.GUIEvent.Caller->getID() > 257)
1409                         {
1410                                 acceptInput();
1411                                 quitMenu();
1412                                 // quitMenu deallocates menu
1413                                 return true;
1414                         }
1415                 }
1416         }
1417
1418         return Parent ? Parent->OnEvent(event) : false;
1419 }
1420