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