# object_gui.cpp

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    00001 /* $Id$ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
    00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
    00008  */
    00009
    00012 #include "stdafx.h"
    00013 #include "command_func.h"
    00014 #include "newgrf.h"
    00015 #include "newgrf_object.h"
    00016 #include "newgrf_text.h"
    00017 #include "strings_func.h"
    00018 #include "viewport_func.h"
    00019 #include "window_gui.h"
    00020 #include "window_func.h"
    00021
    00022 #include "widgets/object_widget.h"
    00023
    00024 #include "table/strings.h"
    00025
    00026 static ObjectClassID _selected_object_class;
    00027 static int _selected_object_index;
    00028 static uint8 _selected_object_view;
    00029 static uint _matrix_col_count;
    00030 static uint _list_row_count;
    00031
    00033 class BuildObjectWindow : public PickerWindowBase {
    00034   static const int OBJECT_MARGIN = 4;
    00035   int line_height;
    00036   int info_height;
    00037   Scrollbar *vscroll;
    00038
    00040   void EnsureSelectedObjectClassIsVisible()
    00041   {
    00042     uint pos = 0;
    00043     for (int i = 0; i < _selected_object_class; i++) {
    00044       if (ObjectClass::Get((ObjectClassID) i)->GetUISpecCount() == 0) continue;
    00045       pos++;
    00046     }
    00047     this->vscroll->ScrollTowards(pos);
    00048   }
    00049
    00054   bool CanRestoreSelectedObject()
    00055   {
    00056     if (_selected_object_index == -1) return false;
    00057
    00058     ObjectClass *sel_objclass = ObjectClass::Get(_selected_object_class);
    00059     if ((int)sel_objclass->GetSpecCount() <= _selected_object_index) return false;
    00060
    00061     return sel_objclass->GetSpec(_selected_object_index)->IsAvailable();
    00062   }
    00063
    00068   uint GetMatrixColumnCount()
    00069   {
    00070     const NWidgetBase *matrix = this->GetWidget<NWidgetBase>(WID_BO_SELECT_MATRIX);
    00071     return 1 + (matrix->current_x - matrix->smallest_x) / matrix->resize_x;
    00072   }
    00073
    00074 public:
    00075   BuildObjectWindow(const WindowDesc *desc, Window *w) : PickerWindowBase(w), info_height(1)
    00076   {
    00077     this->CreateNestedTree(desc);
    00078
    00079     this->vscroll = this->GetScrollbar(WID_BO_SCROLLBAR);
    00080     this->vscroll->SetCapacity(5);
    00081     this->vscroll->SetPosition(0);
    00082     this->vscroll->SetCount(ObjectClass::GetUIClassCount());
    00083
    00084     this->FinishInitNested(desc, 0);
    00085
    00086     if (this->CanRestoreSelectedObject()) {
    00087       this->SelectOtherObject(_selected_object_index);
    00088     } else {
    00089       this->SelectFirstAvailableObject(true);
    00090     }
    00091     assert(ObjectClass::Get(_selected_object_class)->GetUISpecCount() > 0); // object GUI should be disables elsewise
    00092     this->EnsureSelectedObjectClassIsVisible();
    00093     this->GetWidget<NWidgetMatrix>(WID_BO_OBJECT_MATRIX)->SetCount(4);
    00094
    00095     NWidgetMatrix *matrix = this->GetWidget<NWidgetMatrix>(WID_BO_SELECT_MATRIX);
    00096     matrix->SetScrollbar(this->GetScrollbar(WID_BO_SELECT_SCROLL));
    00097     matrix->SetCount(ObjectClass::Get(_selected_object_class)->GetUISpecCount());
    00098
    00099     /* If needed restore the window previous size with the stored values.*/
    00100     uint default_num_cols = this->GetMatrixColumnCount();
    00101     uint default_num_rows = this->vscroll->GetCapacity();
    00102     int delta_x = (_matrix_col_count > default_num_cols) ? (_matrix_col_count - default_num_cols) * this->resize.step_width : 0;
    00103     int delta_y = (_list_row_count > default_num_rows) ? (_list_row_count - default_num_rows) * this->resize.step_height : 0;
    00104     if (delta_x > 0 || delta_y > 0) {
    00105       ResizeWindow(this, delta_x, delta_y, false);
    00106       /* The window may be linked to the toolbars, thus positioned at the left-bottom of the toolbars.
    00107        * If the resized window is wider than the toolbars, its position need te be adjusted to ensure all
    00108        * matrix columns are visible. */
    00109       this->FindWindowPlacementAndResize(this->width, this->height);
    00110     }
    00111
    00112     if (_selected_object_index != -1) matrix->SetClicked(_selected_object_index);
    00113   }
    00114
    00115   virtual ~BuildObjectWindow()
    00116   {
    00117     /* Store the number of columns of the object type matrix and the number of rows of the object class list
    00118      * to restore them on the next window invocation. */
    00119     _matrix_col_count = this->GetMatrixColumnCount();
    00120     _list_row_count = this->vscroll->GetCapacity();
    00121   }
    00122
    00123   virtual void SetStringParameters(int widget) const
    00124   {
    00125     switch (widget) {
    00126       case WID_BO_OBJECT_NAME: {
    00127         const ObjectSpec *spec = ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index);
    00128         SetDParam(0, spec != NULL ? spec->name : STR_EMPTY);
    00129         break;
    00130       }
    00131
    00132       case WID_BO_OBJECT_SIZE: {
    00133         const ObjectSpec *spec = ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index);
    00134         int size = spec == NULL ? 0 : spec->size;
    00135         SetDParam(0, GB(size, HasBit(_selected_object_view, 0) ? 4 : 0, 4));
    00136         SetDParam(1, GB(size, HasBit(_selected_object_view, 0) ? 0 : 4, 4));
    00137         break;
    00138       }
    00139
    00140       default: break;
    00141     }
    00142   }
    00143
    00144   virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
    00145   {
    00146     switch (widget) {
    00147       case WID_BO_CLASS_LIST: {
    00148         for (uint i = 0; i < ObjectClass::GetClassCount(); i++) {
    00149           ObjectClass *objclass = ObjectClass::Get((ObjectClassID)i);
    00150           if (objclass->GetUISpecCount() == 0) continue;
    00151           size->width = max(size->width, GetStringBoundingBox(objclass->name).width);
    00152         }
    00153         size->width += padding.width;
    00154         this->line_height = FONT_HEIGHT_NORMAL + WD_MATRIX_TOP + WD_MATRIX_BOTTOM;
    00155         resize->height = this->line_height;
    00156         size->height = this->vscroll->GetCapacity() * this->line_height;
    00157         break;
    00158       }
    00159
    00160       case WID_BO_OBJECT_NAME:
    00161       case WID_BO_OBJECT_SIZE:
    00162         /* We do not want the window to resize when selecting objects; better clip texts */
    00163         size->width = 0;
    00164         break;
    00165
    00166       case WID_BO_OBJECT_MATRIX: {
    00167         /* Get the right amount of buttons based on the current spec. */
    00168         const ObjectSpec *spec = ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index);
    00169         if (spec != NULL) {
    00170           if (spec->views >= 2) size->width  += resize->width;
    00171           if (spec->views >= 4) size->height += resize->height;
    00172         }
    00173         resize->width = 0;
    00174         resize->height = 0;
    00175         break;
    00176       }
    00177
    00178       case WID_BO_OBJECT_SPRITE: {
    00179         bool two_wide = false;  // Whether there will be two widgets next to each other in the matrix or not.
    00180         int height[2] = {0, 0}; // The height for the different views; in this case views 1/2 and 4.
    00181
    00182         /* Get the height and view information. */
    00183         for (int i = 0; i < NUM_OBJECTS; i++) {
    00184           const ObjectSpec *spec = ObjectSpec::Get(i);
    00185           if (!spec->IsEverAvailable()) continue;
    00186           two_wide |= spec->views >= 2;
    00187           height[spec->views / 4] = max<int>(ObjectSpec::Get(i)->height, height[spec->views / 4]);
    00188         }
    00189
    00190         /* Determine the pixel heights. */
    00191         for (size_t i = 0; i < lengthof(height); i++) {
    00192           height[i] *= TILE_HEIGHT;
    00193           height[i] += TILE_PIXELS + 2 * OBJECT_MARGIN;
    00194         }
    00195
    00196         /* Now determine the size of the minimum widgets. When there are two columns, then
    00197          * we want these columns to be slightly less wide. When there are two rows, then
    00198          * determine the size of the widgets based on the maximum size for a single row
    00199          * of widgets, or just the twice the widget height of the two row ones. */
    00200         size->height = max(height[0], height[1] * 2 + 2);
    00201         if (two_wide) {
    00202           size->width  = (3 * TILE_PIXELS + 2 * OBJECT_MARGIN) * 2 + 2;
    00203         } else {
    00204           size->width  = 4 * TILE_PIXELS + 2 * OBJECT_MARGIN;
    00205         }
    00206
    00207         /* Get the right size for the single widget based on the current spec. */
    00208         const ObjectSpec *spec = ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index);
    00209         if (spec != NULL) {
    00210           if (spec->views >= 2) size->width  = size->width  / 2 - 1;
    00211           if (spec->views >= 4) size->height = size->height / 2 - 1;
    00212         }
    00213         break;
    00214       }
    00215
    00216       case WID_BO_INFO:
    00217         size->height = this->info_height;
    00218         break;
    00219
    00220       case WID_BO_SELECT_MATRIX:
    00221         fill->height = 1;
    00222         resize->height = 1;
    00223         break;
    00224
    00225       default: break;
    00226     }
    00227   }
    00228
    00229   virtual void DrawWidget(const Rect &r, int widget) const
    00230   {
    00231     switch (GB(widget, 0, 16)) {
    00232       case WID_BO_CLASS_LIST: {
    00233         int y = r.top;
    00234         uint pos = 0;
    00235         for (uint i = 0; i < ObjectClass::GetClassCount(); i++) {
    00236           ObjectClass *objclass = ObjectClass::Get((ObjectClassID)i);
    00237           if (objclass->GetUISpecCount() == 0) continue;
    00238           if (!this->vscroll->IsVisible(pos++)) continue;
    00239           SetDParam(0, objclass->name);
    00240           DrawString(r.left + WD_MATRIX_LEFT, r.right + WD_MATRIX_RIGHT, y + WD_MATRIX_TOP, STR_JUST_STRING,
    00241               ((int)i == _selected_object_class) ? TC_WHITE : TC_BLACK);
    00242           y += this->line_height;
    00243         }
    00244         break;
    00245       }
    00246
    00247       case WID_BO_OBJECT_SPRITE: {
    00248         const ObjectSpec *spec = ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index);
    00249         if (spec == NULL) break;
    00250
    00251         /* Height of the selection matrix.
    00252          * Depending on the number of views, the matrix has a 1x1, 1x2, 2x1 or 2x2 layout. To make the previews
    00253          * look nice in all layouts, we use the 4x4 layout (smallest previews) as starting point. For the bigger
    00254          * previews in the layouts with less views we add space homogeneously on all sides, so the 4x4 preview-rectangle
    00255          * is centered in the 2x1, 1x2 resp. 1x1 buttons. */
    00256         uint matrix_height = this->GetWidget<NWidgetMatrix>(WID_BO_OBJECT_MATRIX)->current_y;
    00257
    00258         DrawPixelInfo tmp_dpi;
    00259         /* Set up a clipping area for the preview. */
    00260         if (FillDrawPixelInfo(&tmp_dpi, r.left, r.top, r.right - r.left + 1, r.bottom - r.top + 1)) {
    00261           DrawPixelInfo *old_dpi = _cur_dpi;
    00262           _cur_dpi = &tmp_dpi;
    00263           if (spec->grf_prop.grffile == NULL) {
    00264             extern const DrawTileSprites _objects[];
    00265             const DrawTileSprites *dts = &_objects[spec->grf_prop.local_id];
    00266             DrawOrigTileSeqInGUI((r.right - r.left) / 2 - 1, (r.bottom - r.top + matrix_height / 2) / 2 - OBJECT_MARGIN - TILE_PIXELS, dts, PAL_NONE);
    00267           } else {
    00268             DrawNewObjectTileInGUI((r.right - r.left) / 2 - 1, (r.bottom - r.top + matrix_height / 2) / 2 - OBJECT_MARGIN - TILE_PIXELS, spec, GB(widget, 16, 16));
    00269           }
    00270           _cur_dpi = old_dpi;
    00271         }
    00272         break;
    00273       }
    00274
    00275       case WID_BO_SELECT_IMAGE: {
    00276         ObjectClass *objclass = ObjectClass::Get(_selected_object_class);
    00277         int obj_index = objclass->GetIndexFromUI(GB(widget, 16, 16));
    00278         if (obj_index < 0) break;
    00279         const ObjectSpec *spec = objclass->GetSpec(obj_index);
    00280         if (spec == NULL) break;
    00281
    00282         if (!spec->IsAvailable()) {
    00283           GfxFillRect(r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, PC_BLACK, FILLRECT_CHECKER);
    00284         }
    00285         DrawPixelInfo tmp_dpi;
    00286         /* Set up a clipping area for the preview. */
    00287         if (FillDrawPixelInfo(&tmp_dpi, r.left + 1, r.top, (r.right - 1) - (r.left + 1) + 1, r.bottom - r.top + 1)) {
    00288           DrawPixelInfo *old_dpi = _cur_dpi;
    00289           _cur_dpi = &tmp_dpi;
    00290           if (spec->grf_prop.grffile == NULL) {
    00291             extern const DrawTileSprites _objects[];
    00292             const DrawTileSprites *dts = &_objects[spec->grf_prop.local_id];
    00293             DrawOrigTileSeqInGUI((r.right - r.left) / 2 - 1, r.bottom - r.top - OBJECT_MARGIN - TILE_PIXELS, dts, PAL_NONE);
    00294           } else {
    00295             DrawNewObjectTileInGUI((r.right - r.left) / 2 - 1, r.bottom - r.top - OBJECT_MARGIN - TILE_PIXELS, spec,
    00296                 min(_selected_object_view, spec->views - 1));
    00297           }
    00298           _cur_dpi = old_dpi;
    00299         }
    00300         break;
    00301       }
    00302
    00303       case WID_BO_INFO: {
    00304         const ObjectSpec *spec = ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index);
    00305         if (spec == NULL) break;
    00306
    00307         /* Get the extra message for the GUI */
    00308         if (HasBit(spec->callback_mask, CBM_OBJ_FUND_MORE_TEXT)) {
    00309           uint16 callback_res = GetObjectCallback(CBID_OBJECT_FUND_MORE_TEXT, 0, 0, spec, NULL, INVALID_TILE, _selected_object_view);
    00310           if (callback_res != CALLBACK_FAILED && callback_res != 0x400) {
    00311             if (callback_res > 0x400) {
    00312               ErrorUnknownCallbackResult(spec->grf_prop.grffile->grfid, CBID_OBJECT_FUND_MORE_TEXT, callback_res);
    00313             } else {
    00314               StringID message = GetGRFStringID(spec->grf_prop.grffile->grfid, 0xD000 + callback_res);
    00315               if (message != STR_NULL && message != STR_UNDEFINED) {
    00316                 StartTextRefStackUsage(6);
    00317                 /* Use all the available space left from where we stand up to the
    00318                  * end of the window. We ALSO enlarge the window if needed, so we
    00319                  * can 'go' wild with the bottom of the window. */
    00320                 int y = DrawStringMultiLine(r.left, r.right, r.top, UINT16_MAX, message, TC_ORANGE) - r.top;
    00321                 StopTextRefStackUsage();
    00322                 if (y > this->info_height) {
    00323                   BuildObjectWindow *bow = const_cast<BuildObjectWindow *>(this);
    00324                   bow->info_height = y + 2;
    00325                   bow->ReInit();
    00326                 }
    00327               }
    00328             }
    00329           }
    00330         }
    00331       }
    00332     }
    00333   }
    00334
    00339   void SelectOtherObject(int object_index)
    00340   {
    00341     _selected_object_index = object_index;
    00342     if (_selected_object_index != -1) {
    00343       const ObjectSpec *spec = ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index);
    00344       _selected_object_view = min(_selected_object_view, spec->views - 1);
    00345       this->ReInit();
    00346     } else {
    00347       _selected_object_view = 0;
    00348     }
    00349
    00350     this->GetWidget<NWidgetMatrix>(WID_BO_OBJECT_MATRIX)->SetClicked(_selected_object_view);
    00351     this->GetWidget<NWidgetMatrix>(WID_BO_SELECT_MATRIX)->SetClicked(_selected_object_index != -1 ? ObjectClass::Get(_selected_object_class)->GetUIFromIndex(_selected_object_index) : -1);
    00352     this->UpdateSelectSize();
    00353     this->SetDirty();
    00354   }
    00355
    00356   void UpdateSelectSize()
    00357   {
    00358     if (_selected_object_index == -1) {
    00359       SetTileSelectSize(1, 1);
    00360     } else {
    00361       const ObjectSpec *spec = ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index);
    00362       int w = GB(spec->size, HasBit(_selected_object_view, 0) ? 4 : 0, 4);
    00363       int h = GB(spec->size, HasBit(_selected_object_view, 0) ? 0 : 4, 4);
    00364       SetTileSelectSize(w, h);
    00365     }
    00366   }
    00367
    00368   virtual void OnResize()
    00369   {
    00370     this->vscroll->SetCapacityFromWidget(this, WID_BO_CLASS_LIST);
    00371     this->GetWidget<NWidgetCore>(WID_BO_CLASS_LIST)->widget_data = (this->vscroll->GetCapacity() << MAT_ROW_START) + (1 << MAT_COL_START);
    00372   }
    00373
    00374   virtual void OnClick(Point pt, int widget, int click_count)
    00375   {
    00376     switch (GB(widget, 0, 16)) {
    00377       case WID_BO_CLASS_LIST: {
    00378         int num_clicked = this->vscroll->GetPosition() + (pt.y - this->nested_array[widget]->pos_y) / this->line_height;
    00379         if (num_clicked >= (int)ObjectClass::GetUIClassCount()) break;
    00380
    00381         _selected_object_class = ObjectClass::GetUIClass(num_clicked);
    00382         this->GetWidget<NWidgetMatrix>(WID_BO_SELECT_MATRIX)->SetCount(ObjectClass::Get(_selected_object_class)->GetUISpecCount());
    00383         this->SelectFirstAvailableObject(false);
    00384         break;
    00385       }
    00386
    00387       case WID_BO_SELECT_IMAGE: {
    00388         ObjectClass *objclass = ObjectClass::Get(_selected_object_class);
    00389         int num_clicked = objclass->GetIndexFromUI(GB(widget, 16, 16));
    00390         if (num_clicked >= 0 && objclass->GetSpec(num_clicked)->IsAvailable()) this->SelectOtherObject(num_clicked);
    00391         break;
    00392       }
    00393
    00394       case WID_BO_OBJECT_SPRITE:
    00395         if (_selected_object_index != -1) {
    00396           _selected_object_view = GB(widget, 16, 16);
    00397           this->GetWidget<NWidgetMatrix>(WID_BO_OBJECT_MATRIX)->SetClicked(_selected_object_view);
    00398           this->UpdateSelectSize();
    00399           this->SetDirty();
    00400         }
    00401         break;
    00402     }
    00403   }
    00404
    00410   void SelectFirstAvailableObject(bool change_class)
    00411   {
    00412     /* First try to select an object in the selected class. */
    00413     ObjectClass *sel_objclass = ObjectClass::Get(_selected_object_class);
    00414     for (uint i = 0; i < sel_objclass->GetSpecCount(); i++) {
    00415       const ObjectSpec *spec = sel_objclass->GetSpec(i);
    00416       if (spec->IsAvailable()) {
    00417         this->SelectOtherObject(i);
    00418         return;
    00419       }
    00420     }
    00421     if (change_class) {
    00422       /* If that fails, select the first available object
    00423        * from a random class. */
    00424       for (ObjectClassID j = OBJECT_CLASS_BEGIN; j < OBJECT_CLASS_MAX; j++) {
    00425         ObjectClass *objclass = ObjectClass::Get(j);
    00426         for (uint i = 0; i < objclass->GetSpecCount(); i++) {
    00427           const ObjectSpec *spec = objclass->GetSpec(i);
    00428           if (spec->IsAvailable()) {
    00429             _selected_object_class = j;
    00430             this->SelectOtherObject(i);
    00431             return;
    00432           }
    00433         }
    00434       }
    00435     }
    00436     /* If all objects are unavailable, select nothing... */
    00437     if (ObjectClass::Get(_selected_object_class)->GetUISpecCount() == 0) {
    00438       /* ... but make sure that the class is not empty. */
    00439       for (ObjectClassID j = OBJECT_CLASS_BEGIN; j < OBJECT_CLASS_MAX; j++) {
    00440         if (ObjectClass::Get(j)->GetUISpecCount() > 0) {
    00441           _selected_object_class = j;
    00442           break;
    00443         }
    00444       }
    00445     }
    00446     this->SelectOtherObject(-1);
    00447   }
    00448 };
    00449
    00450 static const NWidgetPart _nested_build_object_widgets[] = {
    00451   NWidget(NWID_HORIZONTAL),
    00452     NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
    00453     NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_OBJECT_BUILD_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
    00454   EndContainer(),
    00455   NWidget(WWT_PANEL, COLOUR_DARK_GREEN),
    00456     NWidget(NWID_HORIZONTAL), SetPadding(2, 0, 0, 0),
    00457       NWidget(NWID_VERTICAL),
    00458         NWidget(NWID_HORIZONTAL), SetPadding(0, 5, 2, 5),
    00459           NWidget(WWT_MATRIX, COLOUR_GREY, WID_BO_CLASS_LIST), SetFill(1, 0), SetDataTip(0x501, STR_OBJECT_BUILD_CLASS_TOOLTIP), SetScrollbar(WID_BO_SCROLLBAR),
    00460           NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_BO_SCROLLBAR),
    00461         EndContainer(),
    00462         NWidget(NWID_HORIZONTAL), SetPadding(0, 5, 0, 5),
    00463           NWidget(NWID_MATRIX, COLOUR_DARK_GREEN, WID_BO_OBJECT_MATRIX), SetPIP(0, 2, 0),
    00464             NWidget(WWT_PANEL, COLOUR_GREY, WID_BO_OBJECT_SPRITE), SetDataTip(0x0, STR_OBJECT_BUILD_PREVIEW_TOOLTIP), EndContainer(),
    00465           EndContainer(),
    00466         EndContainer(),
    00467         NWidget(WWT_TEXT, COLOUR_DARK_GREEN, WID_BO_OBJECT_NAME), SetDataTip(STR_ORANGE_STRING, STR_NULL), SetPadding(2, 5, 2, 5),
    00468         NWidget(WWT_TEXT, COLOUR_DARK_GREEN, WID_BO_OBJECT_SIZE), SetDataTip(STR_OBJECT_BUILD_SIZE, STR_NULL), SetPadding(2, 5, 2, 5),
    00469       EndContainer(),
    00470       NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetScrollbar(WID_BO_SELECT_SCROLL),
    00471         NWidget(NWID_HORIZONTAL),
    00472           NWidget(NWID_MATRIX, COLOUR_DARK_GREEN, WID_BO_SELECT_MATRIX), SetFill(0, 1), SetPIP(0, 2, 0),
    00473             NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BO_SELECT_IMAGE), SetMinimalSize(66, 60), SetDataTip(0x0, STR_OBJECT_BUILD_TOOLTIP),
    00474                 SetFill(0, 0), SetResize(0, 0), SetScrollbar(WID_BO_SELECT_SCROLL),
    00475             EndContainer(),
    00476           EndContainer(),
    00477           NWidget(NWID_VSCROLLBAR, COLOUR_DARK_GREEN, WID_BO_SELECT_SCROLL),
    00478         EndContainer(),
    00479       EndContainer(),
    00480     EndContainer(),
    00481     NWidget(NWID_HORIZONTAL),
    00482       NWidget(WWT_EMPTY, INVALID_COLOUR, WID_BO_INFO), SetPadding(2, 5, 0, 5), SetFill(1, 0), SetResize(1, 0),
    00483       NWidget(NWID_VERTICAL),
    00484         NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetFill(0, 1), EndContainer(),
    00485         NWidget(WWT_RESIZEBOX, COLOUR_DARK_GREEN),
    00486       EndContainer(),
    00487     EndContainer(),
    00488   EndContainer(),
    00489 };
    00490
    00491 static const WindowDesc _build_object_desc(
    00492   WDP_AUTO, 0, 0,
    00493   WC_BUILD_OBJECT, WC_BUILD_TOOLBAR,
    00494   WDF_CONSTRUCTION,
    00495   _nested_build_object_widgets, lengthof(_nested_build_object_widgets)
    00496 );
    00497
    00502 void ShowBuildObjectPicker(Window *w)
    00503 {
    00504   new BuildObjectWindow(&_build_object_desc, w);
    00505 }
    00506
    00508 void InitializeObjectGui()
    00509 {
    00510   _selected_object_class = (ObjectClassID)0;
    00511 }
    00512
    00518 void PlaceProc_Object(TileIndex tile)
    00519 {
    00520   DoCommandP(tile, ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index)->Index(), _selected_object_view, CMD_BUILD_OBJECT | CMD_MSG(STR_ERROR_CAN_T_BUILD_OBJECT), CcTerraform);
    00521 }