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linkgraph_gui.cpp
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1 /* $Id: linkgraph_gui.cpp 26891 2014-09-21 16:19:52Z fonsinchen $ */
2
3 /*
4 * This file is part of OpenTTD.
5 * 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.
6 * 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.
7 * 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/>.
8 */
9
12 #include "../stdafx.h"
13 #include "../window_gui.h"
14 #include "../window_func.h"
15 #include "../company_base.h"
16 #include "../company_gui.h"
17 #include "../date_func.h"
18 #include "../viewport_func.h"
19 #include "../smallmap_gui.h"
20 #include "../core/geometry_func.hpp"
21 #include "../widgets/link_graph_legend_widget.h"
22
23 #include "table/strings.h"
24
25 #include "../safeguards.h"
26
31 const uint8 LinkGraphOverlay::LINK_COLOURS[] = {
32 0x0f, 0xd1, 0xd0, 0x57,
33 0x55, 0x53, 0xbf, 0xbd,
34 0xba, 0xb9, 0xb7, 0xb5
35 };
36
41 void LinkGraphOverlay::GetWidgetDpi(DrawPixelInfo *dpi) const
42 {
43 const NWidgetBase *wi = this->window->GetWidget<NWidgetBase>(this->widget_id);
44 dpi->left = dpi->top = 0;
45 dpi->width = wi->current_x;
46 dpi->height = wi->current_y;
47 }
48
52 void LinkGraphOverlay::RebuildCache()
53 {
54 this->cached_links.clear();
55 this->cached_stations.clear();
56 if (this->company_mask == 0) return;
57
58 DrawPixelInfo dpi;
59 this->GetWidgetDpi(&dpi);
60
61 const Station *sta;
62 FOR_ALL_STATIONS(sta) {
63 if (sta->rect.IsEmpty()) continue;
64
65 Point pta = this->GetStationMiddle(sta);
66
67 StationID from = sta->index;
68 StationLinkMap &seen_links = this->cached_links[from];
69
70 uint supply = 0;
71 CargoID c;
72 FOR_EACH_SET_CARGO_ID(c, this->cargo_mask) {
73 if (!CargoSpec::Get(c)->IsValid()) continue;
74 if (!LinkGraph::IsValidID(sta->goods[c].link_graph)) continue;
75 const LinkGraph &lg = *LinkGraph::Get(sta->goods[c].link_graph);
76
77 ConstNode from_node = lg[sta->goods[c].node];
78 supply += lg.Monthly(from_node.Supply());
79 for (ConstEdgeIterator i = from_node.Begin(); i != from_node.End(); ++i) {
80 StationID to = lg[i->first].Station();
81 assert(from != to);
82 if (!Station::IsValidID(to) || seen_links.find(to) != seen_links.end()) {
83 continue;
84 }
85 const Station *stb = Station::Get(to);
86 assert(sta != stb);
87
88 /* Show links between stations of selected companies or "neutral" ones like oilrigs. */
89 if (stb->owner != OWNER_NONE && sta->owner != OWNER_NONE && !HasBit(this->company_mask, stb->owner)) continue;
90 if (stb->rect.IsEmpty()) continue;
91
92 if (!this->IsLinkVisible(pta, this->GetStationMiddle(stb), &dpi)) continue;
93
94 this->AddLinks(sta, stb);
95 seen_links[to]; // make sure it is created and marked as seen
96 }
97 }
98 if (this->IsPointVisible(pta, &dpi)) {
99 this->cached_stations.push_back(std::make_pair(from, supply));
100 }
101 }
102 }
103
111 inline bool LinkGraphOverlay::IsPointVisible(Point pt, const DrawPixelInfo *dpi, int padding) const
112 {
113 return pt.x > dpi->left - padding && pt.y > dpi->top - padding &&
114 pt.x < dpi->left + dpi->width + padding &&
115 pt.y < dpi->top + dpi->height + padding;
116 }
117
126 inline bool LinkGraphOverlay::IsLinkVisible(Point pta, Point ptb, const DrawPixelInfo *dpi, int padding) const
127 {
128 return !((pta.x < dpi->left - padding && ptb.x < dpi->left - padding) ||
129 (pta.y < dpi->top - padding && ptb.y < dpi->top - padding) ||
130 (pta.x > dpi->left + dpi->width + padding &&
131 ptb.x > dpi->left + dpi->width + padding) ||
132 (pta.y > dpi->top + dpi->height + padding &&
133 ptb.y > dpi->top + dpi->height + padding));
134 }
135
141 void LinkGraphOverlay::AddLinks(const Station *from, const Station *to)
142 {
143 CargoID c;
144 FOR_EACH_SET_CARGO_ID(c, this->cargo_mask) {
145 if (!CargoSpec::Get(c)->IsValid()) continue;
146 const GoodsEntry &ge = from->goods[c];
147 if (!LinkGraph::IsValidID(ge.link_graph) ||
148 ge.link_graph != to->goods[c].link_graph) {
149 continue;
150 }
151 const LinkGraph &lg = *LinkGraph::Get(ge.link_graph);
152 ConstEdge edge = lg[ge.node][to->goods[c].node];
153 if (edge.Capacity() > 0) {
154 this->AddStats(lg.Monthly(edge.Capacity()), lg.Monthly(edge.Usage()),
155 ge.flows.GetFlowVia(to->index), from->owner == OWNER_NONE || to->owner == OWNER_NONE,
156 this->cached_links[from->index][to->index]);
157 }
158 }
159 }
160
171 /* static */ void LinkGraphOverlay::AddStats(uint new_cap, uint new_usg, uint new_plan, bool new_shared, LinkProperties &cargo)
172 {
173 /* multiply the numbers by 32 in order to avoid comparing to 0 too often. */
174 if (cargo.capacity == 0 ||
175 max(cargo.usage, cargo.planned) * 32 / (cargo.capacity + 1) < max(new_usg, new_plan) * 32 / (new_cap + 1)) {
176 cargo.capacity = new_cap;
177 cargo.usage = new_usg;
178 cargo.planned = new_plan;
179 }
180 if (new_shared) cargo.shared = true;
181 }
182
187 void LinkGraphOverlay::Draw(const DrawPixelInfo *dpi) const
188 {
189 this->DrawLinks(dpi);
190 this->DrawStationDots(dpi);
191 }
192
197 void LinkGraphOverlay::DrawLinks(const DrawPixelInfo *dpi) const
198 {
199 for (LinkMap::const_iterator i(this->cached_links.begin()); i != this->cached_links.end(); ++i) {
200 if (!Station::IsValidID(i->first)) continue;
201 Point pta = this->GetStationMiddle(Station::Get(i->first));
202 for (StationLinkMap::const_iterator j(i->second.begin()); j != i->second.end(); ++j) {
203 if (!Station::IsValidID(j->first)) continue;
204 Point ptb = this->GetStationMiddle(Station::Get(j->first));
205 if (!this->IsLinkVisible(pta, ptb, dpi, this->scale + 2)) continue;
206 this->DrawContent(pta, ptb, j->second);
207 }
208 }
209 }
210
217 void LinkGraphOverlay::DrawContent(Point pta, Point ptb, const LinkProperties &cargo) const
218 {
219 uint usage_or_plan = min(cargo.capacity * 2 + 1, max(cargo.usage, cargo.planned));
220 int colour = LinkGraphOverlay::LINK_COLOURS[usage_or_plan * lengthof(LinkGraphOverlay::LINK_COLOURS) / (cargo.capacity * 2 + 2)];
221 int dash = cargo.shared ? this->scale * 4 : 0;
222
223 /* Move line a bit 90° against its dominant direction to prevent it from
224 * being hidden below the grey line. */
225 int side = _settings_game.vehicle.road_side ? 1 : -1;
226 if (abs(pta.x - ptb.x) < abs(pta.y - ptb.y)) {
227 int offset_x = (pta.y > ptb.y ? 1 : -1) * side * this->scale;
228 GfxDrawLine(pta.x + offset_x, pta.y, ptb.x + offset_x, ptb.y, colour, this->scale, dash);
229 } else {
230 int offset_y = (pta.x < ptb.x ? 1 : -1) * side * this->scale;
231 GfxDrawLine(pta.x, pta.y + offset_y, ptb.x, ptb.y + offset_y, colour, this->scale, dash);
232 }
233
234 GfxDrawLine(pta.x, pta.y, ptb.x, ptb.y, _colour_gradient[COLOUR_GREY][1], this->scale);
235 }
236
241 void LinkGraphOverlay::DrawStationDots(const DrawPixelInfo *dpi) const
242 {
243 for (StationSupplyList::const_iterator i(this->cached_stations.begin()); i != this->cached_stations.end(); ++i) {
244 const Station *st = Station::GetIfValid(i->first);
245 if (st == NULL) continue;
246 Point pt = this->GetStationMiddle(st);
247 if (!this->IsPointVisible(pt, dpi, 3 * this->scale)) continue;
248
249 uint r = this->scale * 2 + this->scale * 2 * min(200, i->second) / 200;
250
251 LinkGraphOverlay::DrawVertex(pt.x, pt.y, r,
252 _colour_gradient[st->owner != OWNER_NONE ?
253 (Colours)Company::Get(st->owner)->colour : COLOUR_GREY][5],
254 _colour_gradient[COLOUR_GREY][1]);
255 }
256 }
257
266 /* static */ void LinkGraphOverlay::DrawVertex(int x, int y, int size, int colour, int border_colour)
267 {
268 size--;
269 int w1 = size / 2;
270 int w2 = size / 2 + size % 2;
271
272 GfxFillRect(x - w1, y - w1, x + w2, y + w2, colour);
273
274 w1++;
275 w2++;
276 GfxDrawLine(x - w1, y - w1, x + w2, y - w1, border_colour);
277 GfxDrawLine(x - w1, y + w2, x + w2, y + w2, border_colour);
278 GfxDrawLine(x - w1, y - w1, x - w1, y + w2, border_colour);
279 GfxDrawLine(x + w2, y - w1, x + w2, y + w2, border_colour);
280 }
281
287 Point LinkGraphOverlay::GetStationMiddle(const Station *st) const
288 {
289 if (this->window->viewport != NULL) {
290 return GetViewportStationMiddle(this->window->viewport, st);
291 } else {
292 /* assume this is a smallmap */
293 return static_cast<const SmallMapWindow *>(this->window)->GetStationMiddle(st);
294 }
295 }
296
301 void LinkGraphOverlay::SetCargoMask(uint32 cargo_mask)
302 {
303 this->cargo_mask = cargo_mask;
304 this->RebuildCache();
305 this->window->GetWidget<NWidgetBase>(this->widget_id)->SetDirty(this->window);
306 }
307
312 void LinkGraphOverlay::SetCompanyMask(uint32 company_mask)
313 {
314 this->company_mask = company_mask;
315 this->RebuildCache();
316 this->window->GetWidget<NWidgetBase>(this->widget_id)->SetDirty(this->window);
317 }
318
320 NWidgetBase *MakeCompanyButtonRowsLinkGraphGUI(int *biggest_index)
321 {
322 return MakeCompanyButtonRows(biggest_index, WID_LGL_COMPANY_FIRST, WID_LGL_COMPANY_LAST, 3, STR_LINKGRAPH_LEGEND_SELECT_COMPANIES);
323 }
324
325 NWidgetBase *MakeSaturationLegendLinkGraphGUI(int *biggest_index)
326 {
327 NWidgetVertical *panel = new NWidgetVertical(NC_EQUALSIZE);
328 for (uint i = 0; i < lengthof(LinkGraphOverlay::LINK_COLOURS); ++i) {
329 NWidgetBackground * wid = new NWidgetBackground(WWT_PANEL, COLOUR_DARK_GREEN, i + WID_LGL_SATURATION_FIRST);
330 wid->SetMinimalSize(50, FONT_HEIGHT_SMALL);
331 wid->SetFill(1, 1);
332 wid->SetResize(0, 0);
333 panel->Add(wid);
334 }
335 *biggest_index = WID_LGL_SATURATION_LAST;
336 return panel;
337 }
338
339 NWidgetBase *MakeCargoesLegendLinkGraphGUI(int *biggest_index)
340 {
341 static const uint ENTRIES_PER_ROW = CeilDiv(NUM_CARGO, 5);
342 NWidgetVertical *panel = new NWidgetVertical(NC_EQUALSIZE);
343 NWidgetHorizontal *row = NULL;
344 for (uint i = 0; i < NUM_CARGO; ++i) {
345 if (i % ENTRIES_PER_ROW == 0) {
346 if (row) panel->Add(row);
347 row = new NWidgetHorizontal(NC_EQUALSIZE);
348 }
349 NWidgetBackground * wid = new NWidgetBackground(WWT_PANEL, COLOUR_GREY, i + WID_LGL_CARGO_FIRST);
350 wid->SetMinimalSize(25, FONT_HEIGHT_SMALL);
351 wid->SetFill(1, 1);
352 wid->SetResize(0, 0);
353 row->Add(wid);
354 }
355 /* Fill up last row */
356 for (uint i = 0; i < 4 - (NUM_CARGO - 1) % 5; ++i) {
357 NWidgetSpacer *spc = new NWidgetSpacer(25, FONT_HEIGHT_SMALL);
358 spc->SetFill(1, 1);
359 spc->SetResize(0, 0);
360 row->Add(spc);
361 }
362 panel->Add(row);
363 *biggest_index = WID_LGL_CARGO_LAST;
364 return panel;
365 }
366
367
368 static const NWidgetPart _nested_linkgraph_legend_widgets[] = {
369 NWidget(NWID_HORIZONTAL),
370 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
371 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN, WID_LGL_CAPTION), SetDataTip(STR_LINKGRAPH_LEGEND_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
372 NWidget(WWT_SHADEBOX, COLOUR_DARK_GREEN),
373 NWidget(WWT_STICKYBOX, COLOUR_DARK_GREEN),
374 EndContainer(),
375 NWidget(WWT_PANEL, COLOUR_DARK_GREEN),
376 NWidget(NWID_HORIZONTAL),
377 NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_LGL_SATURATION),
378 SetPadding(WD_FRAMERECT_TOP, 0, WD_FRAMERECT_BOTTOM, WD_CAPTIONTEXT_LEFT),
379 NWidgetFunction(MakeSaturationLegendLinkGraphGUI),
380 EndContainer(),
381 NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_LGL_COMPANIES),
382 SetPadding(WD_FRAMERECT_TOP, 0, WD_FRAMERECT_BOTTOM, WD_CAPTIONTEXT_LEFT),
383 NWidget(NWID_VERTICAL, NC_EQUALSIZE),
384 NWidgetFunction(MakeCompanyButtonRowsLinkGraphGUI),
385 NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_LGL_COMPANIES_ALL), SetDataTip(STR_LINKGRAPH_LEGEND_ALL, STR_NULL),
386 NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_LGL_COMPANIES_NONE), SetDataTip(STR_LINKGRAPH_LEGEND_NONE, STR_NULL),
387 EndContainer(),
388 EndContainer(),
389 NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_LGL_CARGOES),
390 SetPadding(WD_FRAMERECT_TOP, WD_FRAMERECT_RIGHT, WD_FRAMERECT_BOTTOM, WD_CAPTIONTEXT_LEFT),
391 NWidget(NWID_VERTICAL, NC_EQUALSIZE),
392 NWidgetFunction(MakeCargoesLegendLinkGraphGUI),
393 NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_LGL_CARGOES_ALL), SetDataTip(STR_LINKGRAPH_LEGEND_ALL, STR_NULL),
394 NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_LGL_CARGOES_NONE), SetDataTip(STR_LINKGRAPH_LEGEND_NONE, STR_NULL),
395 EndContainer(),
396 EndContainer(),
397 EndContainer(),
398 EndContainer()
399 };
400
401 assert_compile(WID_LGL_SATURATION_LAST - WID_LGL_SATURATION_FIRST ==
402 lengthof(LinkGraphOverlay::LINK_COLOURS) - 1);
403
404 static WindowDesc _linkgraph_legend_desc(
405 WDP_AUTO, "toolbar_linkgraph", 0, 0,
406 WC_LINKGRAPH_LEGEND, WC_NONE,
407 0,
408 _nested_linkgraph_legend_widgets, lengthof(_nested_linkgraph_legend_widgets)
409 );
410
414 void ShowLinkGraphLegend()
415 {
416 AllocateWindowDescFront<LinkGraphLegendWindow>(&_linkgraph_legend_desc, 0);
417 }
418
419 LinkGraphLegendWindow::LinkGraphLegendWindow(WindowDesc *desc, int window_number) : Window(desc)
420 {
421 this->InitNested(window_number);
422 this->InvalidateData(0);
423 this->SetOverlay(FindWindowById(WC_MAIN_WINDOW, 0)->viewport->overlay);
424 }
425
430 void LinkGraphLegendWindow::SetOverlay(LinkGraphOverlay *overlay) {
431 this->overlay = overlay;
432 uint32 companies = this->overlay->GetCompanyMask();
433 for (uint c = 0; c < MAX_COMPANIES; c++) {
434 if (!this->IsWidgetDisabled(WID_LGL_COMPANY_FIRST + c)) {
435 this->SetWidgetLoweredState(WID_LGL_COMPANY_FIRST + c, HasBit(companies, c));
436 }
437 }
438 uint32 cargoes = this->overlay->GetCargoMask();
439 for (uint c = 0; c < NUM_CARGO; c++) {
440 if (!this->IsWidgetDisabled(WID_LGL_CARGO_FIRST + c)) {
441 this->SetWidgetLoweredState(WID_LGL_CARGO_FIRST + c, HasBit(cargoes, c));
442 }
443 }
444 }
445
446 void LinkGraphLegendWindow::UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
447 {
448 if (IsInsideMM(widget, WID_LGL_SATURATION_FIRST, WID_LGL_SATURATION_LAST + 1)) {
449 StringID str = STR_NULL;
450 if (widget == WID_LGL_SATURATION_FIRST) {
451 str = STR_LINKGRAPH_LEGEND_UNUSED;
452 } else if (widget == WID_LGL_SATURATION_LAST) {
453 str = STR_LINKGRAPH_LEGEND_OVERLOADED;
454 } else if (widget == (WID_LGL_SATURATION_LAST + WID_LGL_SATURATION_FIRST) / 2) {
455 str = STR_LINKGRAPH_LEGEND_SATURATED;
456 }
457 if (str != STR_NULL) {
458 Dimension dim = GetStringBoundingBox(str);
459 dim.width += WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT;
460 dim.height += WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
461 *size = maxdim(*size, dim);
462 }
463 }
464 if (IsInsideMM(widget, WID_LGL_CARGO_FIRST, WID_LGL_CARGO_LAST + 1)) {
465 CargoSpec *cargo = CargoSpec::Get(widget - WID_LGL_CARGO_FIRST);
466 if (cargo->IsValid()) {
467 Dimension dim = GetStringBoundingBox(cargo->abbrev);
468 dim.width += WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT;
469 dim.height += WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
470 *size = maxdim(*size, dim);
471 }
472 }
473 }
474
475 void LinkGraphLegendWindow::DrawWidget(const Rect &r, int widget) const
476 {
477 if (IsInsideMM(widget, WID_LGL_COMPANY_FIRST, WID_LGL_COMPANY_LAST + 1)) {
478 if (this->IsWidgetDisabled(widget)) return;
479 CompanyID cid = (CompanyID)(widget - WID_LGL_COMPANY_FIRST);
480 Dimension sprite_size = GetSpriteSize(SPR_COMPANY_ICON);
481 DrawCompanyIcon(cid, (r.left + r.right + 1 - sprite_size.width) / 2, (r.top + r.bottom + 1 - sprite_size.height) / 2);
482 }
483 if (IsInsideMM(widget, WID_LGL_SATURATION_FIRST, WID_LGL_SATURATION_LAST + 1)) {
484 GfxFillRect(r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, LinkGraphOverlay::LINK_COLOURS[widget - WID_LGL_SATURATION_FIRST]);
485 StringID str = STR_NULL;
486 if (widget == WID_LGL_SATURATION_FIRST) {
487 str = STR_LINKGRAPH_LEGEND_UNUSED;
488 } else if (widget == WID_LGL_SATURATION_LAST) {
489 str = STR_LINKGRAPH_LEGEND_OVERLOADED;
490 } else if (widget == (WID_LGL_SATURATION_LAST + WID_LGL_SATURATION_FIRST) / 2) {
491 str = STR_LINKGRAPH_LEGEND_SATURATED;
492 }
493 if (str != STR_NULL) DrawString(r.left, r.right, (r.top + r.bottom + 1 - FONT_HEIGHT_SMALL) / 2, str, TC_FROMSTRING, SA_HOR_CENTER);
494 }
495 if (IsInsideMM(widget, WID_LGL_CARGO_FIRST, WID_LGL_CARGO_LAST + 1)) {
496 if (this->IsWidgetDisabled(widget)) return;
497 CargoSpec *cargo = CargoSpec::Get(widget - WID_LGL_CARGO_FIRST);
498 GfxFillRect(r.left + 2, r.top + 2, r.right - 2, r.bottom - 2, cargo->legend_colour);
499 DrawString(r.left, r.right, (r.top + r.bottom + 1 - FONT_HEIGHT_SMALL) / 2, cargo->abbrev, TC_BLACK, SA_HOR_CENTER);
500 }
501 }
502
506 void LinkGraphLegendWindow::UpdateOverlayCompanies()
507 {
508 uint32 mask = 0;
509 for (uint c = 0; c < MAX_COMPANIES; c++) {
510 if (this->IsWidgetDisabled(c + WID_LGL_COMPANY_FIRST)) continue;
511 if (!this->IsWidgetLowered(c + WID_LGL_COMPANY_FIRST)) continue;
512 SetBit(mask, c);
513 }
514 this->overlay->SetCompanyMask(mask);
515 }
516
520 void LinkGraphLegendWindow::UpdateOverlayCargoes()
521 {
522 uint32 mask = 0;
523 for (uint c = 0; c < NUM_CARGO; c++) {
524 if (this->IsWidgetDisabled(c + WID_LGL_CARGO_FIRST)) continue;
525 if (!this->IsWidgetLowered(c + WID_LGL_CARGO_FIRST)) continue;
526 SetBit(mask, c);
527 }
528 this->overlay->SetCargoMask(mask);
529 }
530
531 void LinkGraphLegendWindow::OnClick(Point pt, int widget, int click_count)
532 {
533 /* Check which button is clicked */
534 if (IsInsideMM(widget, WID_LGL_COMPANY_FIRST, WID_LGL_COMPANY_LAST + 1)) {
535 if (!this->IsWidgetDisabled(widget)) {
536 this->ToggleWidgetLoweredState(widget);
537 this->UpdateOverlayCompanies();
538 }
539 } else if (widget == WID_LGL_COMPANIES_ALL || widget == WID_LGL_COMPANIES_NONE) {
540 for (uint c = 0; c < MAX_COMPANIES; c++) {
541 if (this->IsWidgetDisabled(c + WID_LGL_COMPANY_FIRST)) continue;
542 this->SetWidgetLoweredState(WID_LGL_COMPANY_FIRST + c, widget == WID_LGL_COMPANIES_ALL);
543 }
544 this->UpdateOverlayCompanies();
545 this->SetDirty();
546 } else if (IsInsideMM(widget, WID_LGL_CARGO_FIRST, WID_LGL_CARGO_LAST + 1)) {
547 if (!this->IsWidgetDisabled(widget)) {
548 this->ToggleWidgetLoweredState(widget);
549 this->UpdateOverlayCargoes();
550 }
551 } else if (widget == WID_LGL_CARGOES_ALL || widget == WID_LGL_CARGOES_NONE) {
552 for (uint c = 0; c < NUM_CARGO; c++) {
553 if (this->IsWidgetDisabled(c + WID_LGL_CARGO_FIRST)) continue;
554 this->SetWidgetLoweredState(WID_LGL_CARGO_FIRST + c, widget == WID_LGL_CARGOES_ALL);
555 }
556 this->UpdateOverlayCargoes();
557 }
558 this->SetDirty();
559 }
560
566 void LinkGraphLegendWindow::OnInvalidateData(int data, bool gui_scope)
567 {
568 /* Disable the companies who are not active */
569 for (CompanyID i = COMPANY_FIRST; i < MAX_COMPANIES; i++) {
570 this->SetWidgetDisabledState(i + WID_LGL_COMPANY_FIRST, !Company::IsValidID(i));
571 }
572 for (CargoID i = 0; i < NUM_CARGO; i++) {
573 this->SetWidgetDisabledState(i + WID_LGL_CARGO_FIRST, !CargoSpec::Get(i)->IsValid());
574 }
575 }