# linkgraph_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 "window_func.h"
    00014 #include "window_gui.h"
    00015 #include "company_base.h"
    00016 #include "company_gui.h"
    00017 #include "date_func.h"
    00018 #include "viewport_func.h"
    00019 #include "linkgraph_gui.h"
    00020 #include "smallmap_gui.h"
    00021 #include "widgets/link_graph_legend_widget.h"
    00022
    00027 const uint8 LinkGraphOverlay::LINK_COLOURS[] = {
    00028   0x0f, 0xd1, 0xd0, 0x57,
    00029   0x55, 0x53, 0xbf, 0xbd,
    00030   0xba, 0xb9, 0xb7, 0xb5
    00031 };
    00032
    00037 void LinkGraphOverlay::GetWidgetDpi(DrawPixelInfo *dpi) const
    00038 {
    00039   const NWidgetBase *wi = this->window->GetWidget<NWidgetBase>(this->widget_id);
    00040   dpi->left = dpi->top = 0;
    00041   dpi->width = wi->current_x;
    00042   dpi->height = wi->current_y;
    00043 }
    00044
    00048 void LinkGraphOverlay::RebuildCache()
    00049 {
    00050   this->cached_links.clear();
    00051   this->cached_stations.clear();
    00052
    00053   DrawPixelInfo dpi;
    00054   this->GetWidgetDpi(&dpi);
    00055
    00056   const Station *sta;
    00057   FOR_ALL_STATIONS(sta) {
    00058     /* Show links between stations of selected companies or "neutral" ones like oilrigs. */
    00059     if (sta->owner != INVALID_COMPANY && !HasBit(this->company_mask, sta->owner)) continue;
    00060     if (sta->rect.IsEmpty()) continue;
    00061
    00062     Point pta = this->GetStationMiddle(sta);
    00063
    00064     StationID from = sta->index;
    00065     StationLinkMap &seen_links = this->cached_links[from];
    00066
    00067     uint supply = 0;
    00068     CargoID c;
    00069     FOR_EACH_SET_CARGO_ID(c, this->cargo_mask) {
    00070       if (!CargoSpec::Get(c)->IsValid()) continue;
    00071
    00072       supply += sta->goods[c].supply;
    00073       const LinkStatMap &links = sta->goods[c].link_stats;
    00074       for (LinkStatMap::const_iterator i = links.begin(); i != links.end(); ++i) {
    00075         StationID to = i->first;
    00076         if (seen_links.find(to) != seen_links.end()) continue;
    00077
    00078         if (!Station::IsValidID(to)) continue;
    00079         const Station *stb = Station::Get(to);
    00080         if (stb->owner != INVALID_COMPANY && !HasBit(this->company_mask, stb->owner)) continue;
    00081         if (stb->rect.IsEmpty()) continue;
    00082
    00083         if (!this->IsLinkVisible(pta, this->GetStationMiddle(stb), &dpi)) continue;
    00084
    00085         this->AddLinks(sta, stb);
    00086         this->AddLinks(stb, sta);
    00087         seen_links[to]; // make sure it is created and marked as seen
    00088       }
    00089     }
    00090     if (this->IsPointVisible(pta, &dpi)) {
    00091       this->cached_stations.push_back(std::make_pair(from, supply));
    00092     }
    00093   }
    00094 }
    00095
    00103 inline bool LinkGraphOverlay::IsPointVisible(Point pt, const DrawPixelInfo *dpi, int padding) const
    00104 {
    00105   return pt.x > dpi->left - padding && pt.y > dpi->top - padding &&
    00106       pt.x < dpi->left + dpi->width + padding &&
    00107       pt.y < dpi->top + dpi->height + padding;
    00108 }
    00109
    00118 inline bool LinkGraphOverlay::IsLinkVisible(Point pta, Point ptb, const DrawPixelInfo *dpi, int padding) const
    00119 {
    00120   return !((pta.x < dpi->left - padding && ptb.x < dpi->left - padding) ||
    00121       (pta.y < dpi->top - padding && ptb.y < dpi->top - padding) ||
    00122       (pta.x > dpi->left + dpi->width + padding &&
    00123           ptb.x > dpi->left + dpi->width + padding) ||
    00124       (pta.y > dpi->top + dpi->height + padding &&
    00125           ptb.y > dpi->top + dpi->height + padding));
    00126 }
    00127
    00133 void LinkGraphOverlay::AddLinks(const Station *from, const Station *to)
    00134 {
    00135   CargoID c;
    00136   FOR_EACH_SET_CARGO_ID(c, this->cargo_mask) {
    00137     if (!CargoSpec::Get(c)->IsValid()) continue;
    00138     const GoodsEntry &ge = from->goods[c];
    00139     uint sum_flows = ge.GetSumFlowVia(to->index);
    00140     const LinkStatMap &ls_map = ge.link_stats;
    00141     LinkStatMap::const_iterator i = ls_map.find(to->index);
    00142     if (i != ls_map.end()) {
    00143       const LinkStat &link_stat = i->second;
    00144       this->AddStats(link_stat, sum_flows, this->cached_links[from->index][to->index]);
    00145     }
    00146   }
    00147 }
    00148
    00155 /* static */ void LinkGraphOverlay::AddStats(const LinkStat &orig_link, uint new_plan, LinkProperties &cargo)
    00156 {
    00157   uint new_cap = orig_link.Capacity();
    00158   uint new_usg = orig_link.Usage();
    00159
    00160   /* multiply the numbers by 32 in order to avoid comparing to 0 too often. */
    00161   if (cargo.capacity == 0 ||
    00162       max(cargo.usage, cargo.planned) * 32 / (cargo.capacity + 1) < max(new_usg, new_plan) * 32 / (new_cap + 1)) {
    00163     cargo.capacity = new_cap;
    00164     cargo.usage = new_usg;
    00165     cargo.planned = new_plan;
    00166   }
    00167 }
    00168
    00173 void LinkGraphOverlay::Draw(const DrawPixelInfo *dpi) const
    00174 {
    00175   this->DrawLinks(dpi);
    00176   this->DrawStationDots(dpi);
    00177 }
    00178
    00183 void LinkGraphOverlay::DrawLinks(const DrawPixelInfo *dpi) const
    00184 {
    00185   for (LinkMap::const_iterator i(this->cached_links.begin()); i != this->cached_links.end(); ++i) {
    00186     if (!Station::IsValidID(i->first)) continue;
    00187     Point pta = this->GetStationMiddle(Station::Get(i->first));
    00188     for (StationLinkMap::const_iterator j(i->second.begin()); j != i->second.end(); ++j) {
    00189       if (!Station::IsValidID(j->first)) continue;
    00190       Point ptb = this->GetStationMiddle(Station::Get(j->first));
    00191       if (!this->IsLinkVisible(pta, ptb, dpi, this->scale + 2)) continue;
    00192       this->DrawContent(pta, ptb, j->second);
    00193     }
    00194   }
    00195 }
    00196
    00203 void LinkGraphOverlay::DrawContent(Point pta, Point ptb, const LinkProperties &cargo) const
    00204 {
    00205   int offset_y = (pta.x < ptb.x ? 1 : -1) * this->scale;
    00206   int offset_x = (pta.y > ptb.y ? 1 : -1) * this->scale;
    00207
    00208   uint usage_or_plan = min(cargo.capacity * 2 + 1, max(cargo.usage, cargo.planned));
    00209   int colour = LinkGraphOverlay::LINK_COLOURS[usage_or_plan * lengthof(LinkGraphOverlay::LINK_COLOURS) / (cargo.capacity * 2 + 2)];
    00210
    00211   GfxDrawLine(pta.x + offset_x, pta.y, ptb.x + offset_x, ptb.y, colour, scale);
    00212   GfxDrawLine(pta.x, pta.y + offset_y, ptb.x, ptb.y + offset_y, colour, scale);
    00213
    00214   GfxDrawLine(pta.x, pta.y, ptb.x, ptb.y, _colour_gradient[COLOUR_GREY][1], this->scale);
    00215 }
    00216
    00221 void LinkGraphOverlay::DrawStationDots(const DrawPixelInfo *dpi) const
    00222 {
    00223   for (StationSupplyList::const_iterator i(this->cached_stations.begin()); i != this->cached_stations.end(); ++i) {
    00224     const Station *st = Station::GetIfValid(i->first);
    00225     if (st == NULL) continue;
    00226     Point pt = this->GetStationMiddle(st);
    00227     if (!this->IsPointVisible(pt, dpi, 3 * this->scale)) continue;
    00228
    00229     uint r = this->scale * 2 + this->scale * 2 * min(200, i->second) / 200;
    00230
    00231     LinkGraphOverlay::DrawVertex(pt.x, pt.y, r,
    00232         _colour_gradient[Company::Get(st->owner)->colour][5],
    00233         _colour_gradient[COLOUR_GREY][1]);
    00234   }
    00235 }
    00236
    00245 /* static */ void LinkGraphOverlay::DrawVertex(int x, int y, int size, int colour, int border_colour)
    00246 {
    00247   size--;
    00248   int w1 = size / 2;
    00249   int w2 = size / 2 + size % 2;
    00250
    00251   GfxFillRect(x - w1, y - w1, x + w2, y + w2, colour);
    00252
    00253   w1++;
    00254   w2++;
    00255   GfxDrawLine(x - w1, y - w1, x + w2, y - w1, border_colour);
    00256   GfxDrawLine(x - w1, y + w2, x + w2, y + w2, border_colour);
    00257   GfxDrawLine(x - w1, y - w1, x - w1, y + w2, border_colour);
    00258   GfxDrawLine(x + w2, y - w1, x + w2, y + w2, border_colour);
    00259 }
    00260
    00266 Point LinkGraphOverlay::GetStationMiddle(const Station *st) const {
    00267   if (this->window->viewport != NULL) {
    00268     return GetViewportStationMiddle(this->window->viewport, st);
    00269   } else {
    00270     /* assume this is a smallmap */
    00271     return static_cast<const SmallMapWindow *>(this->window)->GetStationMiddle(st);
    00272   }
    00273 }
    00274
    00279 void LinkGraphOverlay::SetCargoMask(uint32 cargo_mask)
    00280 {
    00281   this->cargo_mask = cargo_mask;
    00282   this->RebuildCache();
    00283   this->window->GetWidget<NWidgetBase>(this->widget_id)->SetDirty(this->window);
    00284 }
    00285
    00290 void LinkGraphOverlay::SetCompanyMask(uint32 company_mask)
    00291 {
    00292   this->company_mask = company_mask;
    00293   this->RebuildCache();
    00294   this->window->GetWidget<NWidgetBase>(this->widget_id)->SetDirty(this->window);
    00295 }
    00296
    00298 NWidgetBase *MakeCompanyButtonRowsLinkGraphGUI(int *biggest_index)
    00299 {
    00300   return MakeCompanyButtonRows(biggest_index, WID_LGL_COMPANY_FIRST, WID_LGL_COMPANY_LAST, 3, STR_LINKGRAPH_LEGEND_SELECT_COMPANIES);
    00301 }
    00302
    00303 NWidgetBase *MakeSaturationLegendLinkGraphGUI(int *biggest_index)
    00304 {
    00305   NWidgetVertical *panel = new NWidgetVertical();
    00306   for (uint i = 0; i < lengthof(LinkGraphOverlay::LINK_COLOURS); ++i) {
    00307     NWidgetBackground * wid = new NWidgetBackground(WWT_PANEL, COLOUR_DARK_GREEN, i + WID_LGL_SATURATION_FIRST);
    00308     wid->SetMinimalSize(50, FONT_HEIGHT_SMALL);
    00309     wid->SetFill(0, 1);
    00310     wid->SetResize(0, 1);
    00311     panel->Add(wid);
    00312   }
    00313   *biggest_index = WID_LGL_SATURATION_LAST;
    00314   return panel;
    00315 }
    00316
    00317 NWidgetBase *MakeCargoesLegendLinkGraphGUI(int *biggest_index)
    00318 {
    00319   static const uint ENTRIES_PER_ROW = CeilDiv(NUM_CARGO, 5);
    00320   NWidgetVertical *panel = new NWidgetVertical();
    00321   NWidgetHorizontal *row = NULL;
    00322   for (uint i = 0; i < NUM_CARGO; ++i) {
    00323     if (i % ENTRIES_PER_ROW == 0) {
    00324       if (row) panel->Add(row);
    00325       row = new NWidgetHorizontal();
    00326     }
    00327     NWidgetBackground * wid = new NWidgetBackground(WWT_PANEL, COLOUR_GREY, i + WID_LGL_CARGO_FIRST);
    00328     wid->SetMinimalSize(25, FONT_HEIGHT_SMALL);
    00329     wid->SetFill(0, 1);
    00330     wid->SetResize(0, 1);
    00331     row->Add(wid);
    00332   }
    00333   panel->Add(row);
    00334   *biggest_index = WID_LGL_CARGO_LAST;
    00335   return panel;
    00336 }
    00337
    00338
    00339 static const NWidgetPart _nested_linkgraph_legend_widgets[] = {
    00340   NWidget(NWID_HORIZONTAL),
    00341     NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
    00342     NWidget(WWT_CAPTION, COLOUR_DARK_GREEN, WID_LGL_CAPTION), SetDataTip(STR_LINKGRAPH_LEGEND_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
    00343     NWidget(WWT_SHADEBOX, COLOUR_DARK_GREEN),
    00344     NWidget(WWT_STICKYBOX, COLOUR_DARK_GREEN),
    00345   EndContainer(),
    00346   NWidget(WWT_PANEL, COLOUR_DARK_GREEN),
    00347     NWidget(NWID_HORIZONTAL),
    00348       NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_LGL_SATURATION),
    00349         SetPadding(WD_FRAMERECT_TOP, 0, WD_FRAMERECT_BOTTOM, WD_CAPTIONTEXT_LEFT),
    00350         SetMinimalSize(50, 100),
    00351         NWidgetFunction(MakeSaturationLegendLinkGraphGUI),
    00352       EndContainer(),
    00353       NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_LGL_COMPANIES),
    00354         SetPadding(WD_FRAMERECT_TOP, 0, WD_FRAMERECT_BOTTOM, WD_CAPTIONTEXT_LEFT),
    00355         NWidget(NWID_VERTICAL, NC_EQUALSIZE),
    00356           SetMinimalSize(100, 100),
    00357           NWidgetFunction(MakeCompanyButtonRowsLinkGraphGUI),
    00358           NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_LGL_COMPANIES_ALL), SetDataTip(STR_LINKGRAPH_LEGEND_ALL, STR_NULL),
    00359           NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_LGL_COMPANIES_NONE), SetDataTip(STR_LINKGRAPH_LEGEND_NONE, STR_NULL),
    00360         EndContainer(),
    00361       EndContainer(),
    00362       NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_LGL_CARGOES),
    00363         SetPadding(WD_FRAMERECT_TOP, WD_FRAMERECT_RIGHT, WD_FRAMERECT_BOTTOM, WD_CAPTIONTEXT_LEFT),
    00364         NWidget(NWID_VERTICAL, NC_EQUALSIZE),
    00365           SetMinimalSize(150, 100),
    00366           NWidgetFunction(MakeCargoesLegendLinkGraphGUI),
    00367           NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_LGL_CARGOES_ALL), SetDataTip(STR_LINKGRAPH_LEGEND_ALL, STR_NULL),
    00368           NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_LGL_CARGOES_NONE), SetDataTip(STR_LINKGRAPH_LEGEND_NONE, STR_NULL),
    00369         EndContainer(),
    00370       EndContainer(),
    00371     EndContainer(),
    00372   EndContainer()
    00373 };
    00374
    00375 static const WindowDesc _linkgraph_legend_desc(
    00376   WDP_MANUAL, 300, 314,
    00377   WC_LINKGRAPH_LEGEND, WC_NONE,
    00378   0,
    00379   _nested_linkgraph_legend_widgets, lengthof(_nested_linkgraph_legend_widgets)
    00380 );
    00381
    00385 void ShowLinkGraphLegend()
    00386 {
    00387   AllocateWindowDescFront<LinkGraphLegendWindow>(&_linkgraph_legend_desc, 0);
    00388 }
    00389
    00390 LinkGraphLegendWindow::LinkGraphLegendWindow(const WindowDesc *desc, int window_number)
    00391 {
    00392   this->InitNested(desc, window_number);
    00393   this->InvalidateData(0);
    00394   this->SetOverlay(FindWindowById(WC_MAIN_WINDOW, 0)->viewport->overlay);
    00395 }
    00396
    00401 void LinkGraphLegendWindow::SetOverlay(LinkGraphOverlay *overlay) {
    00402   this->overlay = overlay;
    00403   uint32 companies = this->overlay->GetCompanyMask();
    00404   for (uint c = 0; c < MAX_COMPANIES; c++) {
    00405     if (!this->IsWidgetDisabled(WID_LGL_COMPANY_FIRST + c)) {
    00406       this->SetWidgetLoweredState(WID_LGL_COMPANY_FIRST + c, HasBit(companies, c));
    00407     }
    00408   }
    00409   uint32 cargoes = this->overlay->GetCargoMask();
    00410   for (uint c = 0; c < NUM_CARGO; c++) {
    00411     if (!this->IsWidgetDisabled(WID_LGL_CARGO_FIRST + c)) {
    00412       this->SetWidgetLoweredState(WID_LGL_CARGO_FIRST + c, HasBit(cargoes, c));
    00413     }
    00414   }
    00415 }
    00416
    00417 void LinkGraphLegendWindow::DrawWidget(const Rect &r, int widget) const
    00418 {
    00419   const NWidgetBase *wid = this->GetWidget<NWidgetBase>(widget);
    00420   if (IsInsideMM(widget, WID_LGL_COMPANY_FIRST, WID_LGL_COMPANY_LAST + 1)) {
    00421     if (this->IsWidgetDisabled(widget)) return;
    00422     CompanyID cid = (CompanyID)(widget - WID_LGL_COMPANY_FIRST);
    00423     Dimension sprite_size = GetSpriteSize(SPR_COMPANY_ICON);
    00424     DrawCompanyIcon(cid, (r.left + r.right - sprite_size.width) / 2, (r.top + r.bottom - sprite_size.height) / 2);
    00425     return;
    00426   }
    00427   if (IsInsideMM(widget, WID_LGL_SATURATION_FIRST, WID_LGL_SATURATION_LAST + 1)) {
    00428     GfxFillRect(r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, LinkGraphOverlay::LINK_COLOURS[widget - WID_LGL_SATURATION_FIRST]);
    00429     if (widget == WID_LGL_SATURATION_FIRST) {
    00430       DrawString(wid->pos_x, wid->current_x + wid->pos_x, wid->pos_y, STR_LINKGRAPH_LEGEND_UNUSED, TC_FROMSTRING, SA_HOR_CENTER);
    00431     } else if (widget == WID_LGL_SATURATION_LAST) {
    00432       DrawString(wid->pos_x, wid->current_x + wid->pos_x, wid->pos_y, STR_LINKGRAPH_LEGEND_OVERLOADED, TC_FROMSTRING, SA_HOR_CENTER);
    00433     } else if (widget == (WID_LGL_SATURATION_LAST + WID_LGL_SATURATION_FIRST) / 2) {
    00434       DrawString(wid->pos_x, wid->current_x + wid->pos_x, wid->pos_y, STR_LINKGRAPH_LEGEND_SATURATED, TC_FROMSTRING, SA_HOR_CENTER);
    00435     }
    00436   }
    00437   if (IsInsideMM(widget, WID_LGL_CARGO_FIRST, WID_LGL_CARGO_LAST + 1)) {
    00438     if (this->IsWidgetDisabled(widget)) return;
    00439     CargoSpec *cargo = CargoSpec::Get(widget - WID_LGL_CARGO_FIRST);
    00440     GfxFillRect(r.left + 2, r.top + 2, r.right - 2, r.bottom - 2, cargo->legend_colour);
    00441     DrawString(wid->pos_x, wid->current_x + wid->pos_x, wid->pos_y + 2, cargo->abbrev, TC_BLACK, SA_HOR_CENTER);
    00442   }
    00443 }
    00444
    00448 void LinkGraphLegendWindow::UpdateOverlayCompanies()
    00449 {
    00450   uint32 mask = 0;
    00451   for (uint c = 0; c < MAX_COMPANIES; c++) {
    00452     if (this->IsWidgetDisabled(c + WID_LGL_COMPANY_FIRST)) continue;
    00453     if (!this->IsWidgetLowered(c + WID_LGL_COMPANY_FIRST)) continue;
    00454     SetBit(mask, c);
    00455   }
    00456   this->overlay->SetCompanyMask(mask);
    00457 }
    00458
    00462 void LinkGraphLegendWindow::UpdateOverlayCargoes()
    00463 {
    00464   uint32 mask = 0;
    00465   for (uint c = 0; c < NUM_CARGO; c++) {
    00466     if (this->IsWidgetDisabled(c + WID_LGL_CARGO_FIRST)) continue;
    00467     if (!this->IsWidgetLowered(c + WID_LGL_CARGO_FIRST)) continue;
    00468     SetBit(mask, c);
    00469   }
    00470   this->overlay->SetCargoMask(mask);
    00471 }
    00472
    00473 void LinkGraphLegendWindow::OnClick(Point pt, int widget, int click_count)
    00474 {
    00475   /* Check which button is clicked */
    00476   if (IsInsideMM(widget, WID_LGL_COMPANY_FIRST, WID_LGL_COMPANY_LAST + 1)) {
    00477     /* Is it no on disable? */
    00478     if (!this->IsWidgetDisabled(widget)) {
    00479       this->ToggleWidgetLoweredState(widget);
    00480       this->UpdateOverlayCompanies();
    00481     }
    00482   } else if (widget == WID_LGL_COMPANIES_ALL || widget == WID_LGL_COMPANIES_NONE) {
    00483     for (uint c = 0; c < MAX_COMPANIES; c++) {
    00484       if (this->IsWidgetDisabled(c + WID_LGL_COMPANY_FIRST)) continue;
    00485       this->SetWidgetLoweredState(WID_LGL_COMPANY_FIRST + c, widget == WID_LGL_COMPANIES_ALL);
    00486     }
    00487     this->UpdateOverlayCompanies();
    00488     this->SetDirty();
    00489   } else if (IsInsideMM(widget, WID_LGL_CARGO_FIRST, WID_LGL_CARGO_LAST + 1)) {
    00490     /* Is it no on disable? */
    00491     if (!this->IsWidgetDisabled(widget)) {
    00492       this->ToggleWidgetLoweredState(widget);
    00493       this->UpdateOverlayCargoes();
    00494
    00495     }
    00496   } else if (widget == WID_LGL_CARGOES_ALL || widget == WID_LGL_CARGOES_NONE) {
    00497     for (uint c = 0; c < NUM_CARGO; c++) {
    00498       if (this->IsWidgetDisabled(c + WID_LGL_CARGO_FIRST)) continue;
    00499       this->SetWidgetLoweredState(WID_LGL_CARGO_FIRST + c, widget == WID_LGL_CARGOES_ALL);
    00500     }
    00501     this->UpdateOverlayCargoes();
    00502   }
    00503   this->SetDirty();
    00504 }
    00505
    00511 void LinkGraphLegendWindow::OnInvalidateData(int data, bool gui_scope)
    00512 {
    00513   /* Disable the companies who are not active */
    00514   for (CompanyID i = COMPANY_FIRST; i < MAX_COMPANIES; i++) {
    00515     this->SetWidgetDisabledState(i + WID_LGL_COMPANY_FIRST, !Company::IsValidID(i));
    00516   }
    00517   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00518     this->SetWidgetDisabledState(i + WID_LGL_CARGO_FIRST, !CargoSpec::Get(i)->IsValid());
    00519   }
    00520 }