OpenTTD: src/object_gui.cpp Source File

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object_gui.cpp
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1 /* $Id: object_gui.cpp 27438 2015-11-07 15:07:18Z frosch $ */
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 "command_func.h"
14 #include "newgrf.h"
15 #include "newgrf_object.h"
16 #include "newgrf_text.h"
17 #include "strings_func.h"
18 #include "viewport_func.h"
19 #include "tilehighlight_func.h"
20 #include "window_gui.h"
21 #include "window_func.h"
22 #include "zoom_func.h"
23
24 #include "widgets/object_widget.h"
25
26 #include "table/strings.h"
27
28 #include "safeguards.h"
29
30 static ObjectClassID _selected_object_class;
31 static int _selected_object_index;
32 static uint8 _selected_object_view;
33
35 class BuildObjectWindow : public Window {
36 static const int OBJECT_MARGIN = 4;
37 int line_height;
38 int info_height;
39 Scrollbar *vscroll;
40
42 void EnsureSelectedObjectClassIsVisible()
43 {
44 uint pos = 0;
45 for (int i = 0; i < _selected_object_class; i++) {
46 if (ObjectClass::Get((ObjectClassID) i)->GetUISpecCount() == 0) continue;
47 pos++;
48 }
49 this->vscroll->ScrollTowards(pos);
50 }
51
56 bool CanRestoreSelectedObject()
57 {
58 if (_selected_object_index == -1) return false;
59
60 ObjectClass *sel_objclass = ObjectClass::Get(_selected_object_class);
61 if ((int)sel_objclass->GetSpecCount() <= _selected_object_index) return false;
62
63 return sel_objclass->GetSpec(_selected_object_index)->IsAvailable();
64 }
65
70 uint GetMatrixColumnCount()
71 {
72 const NWidgetBase *matrix = this->GetWidget<NWidgetBase>(WID_BO_SELECT_MATRIX);
73 return 1 + (matrix->current_x - matrix->smallest_x) / matrix->resize_x;
74 }
75
76 public:
77 BuildObjectWindow(WindowDesc *desc, WindowNumber number) : Window(desc), info_height(1)
78 {
79 this->CreateNestedTree();
80 this->vscroll = this->GetScrollbar(WID_BO_SCROLLBAR);
81 this->FinishInitNested(number);
82
83 ResetObjectToPlace();
84
85 this->vscroll->SetPosition(0);
86 this->vscroll->SetCount(ObjectClass::GetUIClassCount());
87
88 NWidgetMatrix *matrix = this->GetWidget<NWidgetMatrix>(WID_BO_SELECT_MATRIX);
89 matrix->SetScrollbar(this->GetScrollbar(WID_BO_SELECT_SCROLL));
90
91 this->SelectOtherClass(_selected_object_class);
92 if (this->CanRestoreSelectedObject()) {
93 this->SelectOtherObject(_selected_object_index);
94 } else {
95 this->SelectFirstAvailableObject(true);
96 }
97 assert(ObjectClass::Get(_selected_object_class)->GetUISpecCount() > 0); // object GUI should be disables elsewise
98 this->EnsureSelectedObjectClassIsVisible();
99 this->GetWidget<NWidgetMatrix>(WID_BO_OBJECT_MATRIX)->SetCount(4);
100 }
101
102 virtual void SetStringParameters(int widget) const
103 {
104 switch (widget) {
105 case WID_BO_OBJECT_NAME: {
106 const ObjectSpec *spec = ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index);
107 SetDParam(0, spec != NULL ? spec->name : STR_EMPTY);
108 break;
109 }
110
111 case WID_BO_OBJECT_SIZE: {
112 const ObjectSpec *spec = ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index);
113 int size = spec == NULL ? 0 : spec->size;
114 SetDParam(0, GB(size, HasBit(_selected_object_view, 0) ? 4 : 0, 4));
115 SetDParam(1, GB(size, HasBit(_selected_object_view, 0) ? 0 : 4, 4));
116 break;
117 }
118
119 default: break;
120 }
121 }
122
123 virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
124 {
125 switch (widget) {
126 case WID_BO_CLASS_LIST: {
127 for (uint i = 0; i < ObjectClass::GetClassCount(); i++) {
128 ObjectClass *objclass = ObjectClass::Get((ObjectClassID)i);
129 if (objclass->GetUISpecCount() == 0) continue;
130 size->width = max(size->width, GetStringBoundingBox(objclass->name).width);
131 }
132 size->width += padding.width;
133 this->line_height = FONT_HEIGHT_NORMAL + WD_MATRIX_TOP + WD_MATRIX_BOTTOM;
134 resize->height = this->line_height;
135 size->height = 5 * this->line_height;
136 break;
137 }
138
139 case WID_BO_OBJECT_NAME:
140 case WID_BO_OBJECT_SIZE:
141 /* We do not want the window to resize when selecting objects; better clip texts */
142 size->width = 0;
143 break;
144
145 case WID_BO_OBJECT_MATRIX: {
146 /* Get the right amount of buttons based on the current spec. */
147 const ObjectSpec *spec = ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index);
148 if (spec != NULL) {
149 if (spec->views >= 2) size->width += resize->width;
150 if (spec->views >= 4) size->height += resize->height;
151 }
152 resize->width = 0;
153 resize->height = 0;
154 break;
155 }
156
157 case WID_BO_OBJECT_SPRITE: {
158 bool two_wide = false; // Whether there will be two widgets next to each other in the matrix or not.
159 int height[2] = {0, 0}; // The height for the different views; in this case views 1/2 and 4.
160
161 /* Get the height and view information. */
162 for (int i = 0; i < NUM_OBJECTS; i++) {
163 const ObjectSpec *spec = ObjectSpec::Get(i);
164 if (!spec->IsEverAvailable()) continue;
165 two_wide |= spec->views >= 2;
166 height[spec->views / 4] = max<int>(ObjectSpec::Get(i)->height, height[spec->views / 4]);
167 }
168
169 /* Determine the pixel heights. */
170 for (size_t i = 0; i < lengthof(height); i++) {
171 height[i] *= ScaleGUITrad(TILE_HEIGHT);
172 height[i] += ScaleGUITrad(TILE_PIXELS) + 2 * OBJECT_MARGIN;
173 }
174
175 /* Now determine the size of the minimum widgets. When there are two columns, then
176 * we want these columns to be slightly less wide. When there are two rows, then
177 * determine the size of the widgets based on the maximum size for a single row
178 * of widgets, or just the twice the widget height of the two row ones. */
179 size->height = max(height[0], height[1] * 2 + 2);
180 if (two_wide) {
181 size->width = (3 * ScaleGUITrad(TILE_PIXELS) + 2 * OBJECT_MARGIN) * 2 + 2;
182 } else {
183 size->width = 4 * ScaleGUITrad(TILE_PIXELS) + 2 * OBJECT_MARGIN;
184 }
185
186 /* Get the right size for the single widget based on the current spec. */
187 const ObjectSpec *spec = ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index);
188 if (spec != NULL) {
189 if (spec->views >= 2) size->width = size->width / 2 - 1;
190 if (spec->views >= 4) size->height = size->height / 2 - 1;
191 }
192 break;
193 }
194
195 case WID_BO_INFO:
196 size->height = this->info_height;
197 break;
198
199 case WID_BO_SELECT_MATRIX:
200 fill->height = 1;
201 resize->height = 1;
202 break;
203
204 case WID_BO_SELECT_IMAGE:
205 size->width = ScaleGUITrad(64) + 2;
206 size->height = ScaleGUITrad(58) + 2;
207 break;
208
209 default: break;
210 }
211 }
212
213 virtual void DrawWidget(const Rect &r, int widget) const
214 {
215 switch (GB(widget, 0, 16)) {
216 case WID_BO_CLASS_LIST: {
217 int y = r.top;
218 uint pos = 0;
219 for (uint i = 0; i < ObjectClass::GetClassCount(); i++) {
220 ObjectClass *objclass = ObjectClass::Get((ObjectClassID)i);
221 if (objclass->GetUISpecCount() == 0) continue;
222 if (!this->vscroll->IsVisible(pos++)) continue;
223 DrawString(r.left + WD_MATRIX_LEFT, r.right - WD_MATRIX_RIGHT, y + WD_MATRIX_TOP, objclass->name,
224 ((int)i == _selected_object_class) ? TC_WHITE : TC_BLACK);
225 y += this->line_height;
226 }
227 break;
228 }
229
230 case WID_BO_OBJECT_SPRITE: {
231 const ObjectSpec *spec = ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index);
232 if (spec == NULL) break;
233
234 /* Height of the selection matrix.
235 * Depending on the number of views, the matrix has a 1x1, 1x2, 2x1 or 2x2 layout. To make the previews
236 * look nice in all layouts, we use the 4x4 layout (smallest previews) as starting point. For the bigger
237 * previews in the layouts with less views we add space homogeneously on all sides, so the 4x4 preview-rectangle
238 * is centered in the 2x1, 1x2 resp. 1x1 buttons. */
239 uint matrix_height = this->GetWidget<NWidgetMatrix>(WID_BO_OBJECT_MATRIX)->current_y;
240
241 DrawPixelInfo tmp_dpi;
242 /* Set up a clipping area for the preview. */
243 if (FillDrawPixelInfo(&tmp_dpi, r.left, r.top, r.right - r.left + 1, r.bottom - r.top + 1)) {
244 DrawPixelInfo *old_dpi = _cur_dpi;
245 _cur_dpi = &tmp_dpi;
246 if (spec->grf_prop.grffile == NULL) {
247 extern const DrawTileSprites _objects[];
248 const DrawTileSprites *dts = &_objects[spec->grf_prop.local_id];
249 DrawOrigTileSeqInGUI((r.right - r.left) / 2 - 1, (r.bottom - r.top + matrix_height / 2) / 2 - OBJECT_MARGIN - ScaleGUITrad(TILE_PIXELS), dts, PAL_NONE);
250 } else {
251 DrawNewObjectTileInGUI((r.right - r.left) / 2 - 1, (r.bottom - r.top + matrix_height / 2) / 2 - OBJECT_MARGIN - ScaleGUITrad(TILE_PIXELS), spec, GB(widget, 16, 16));
252 }
253 _cur_dpi = old_dpi;
254 }
255 break;
256 }
257
258 case WID_BO_SELECT_IMAGE: {
259 ObjectClass *objclass = ObjectClass::Get(_selected_object_class);
260 int obj_index = objclass->GetIndexFromUI(GB(widget, 16, 16));
261 if (obj_index < 0) break;
262 const ObjectSpec *spec = objclass->GetSpec(obj_index);
263 if (spec == NULL) break;
264
265 if (!spec->IsAvailable()) {
266 GfxFillRect(r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, PC_BLACK, FILLRECT_CHECKER);
267 }
268 DrawPixelInfo tmp_dpi;
269 /* Set up a clipping area for the preview. */
270 if (FillDrawPixelInfo(&tmp_dpi, r.left + 1, r.top, (r.right - 1) - (r.left + 1) + 1, r.bottom - r.top + 1)) {
271 DrawPixelInfo *old_dpi = _cur_dpi;
272 _cur_dpi = &tmp_dpi;
273 if (spec->grf_prop.grffile == NULL) {
274 extern const DrawTileSprites _objects[];
275 const DrawTileSprites *dts = &_objects[spec->grf_prop.local_id];
276 DrawOrigTileSeqInGUI((r.right - r.left) / 2 - 1, r.bottom - r.top - OBJECT_MARGIN - ScaleGUITrad(TILE_PIXELS), dts, PAL_NONE);
277 } else {
278 DrawNewObjectTileInGUI((r.right - r.left) / 2 - 1, r.bottom - r.top - OBJECT_MARGIN - ScaleGUITrad(TILE_PIXELS), spec,
279 min(_selected_object_view, spec->views - 1));
280 }
281 _cur_dpi = old_dpi;
282 }
283 break;
284 }
285
286 case WID_BO_INFO: {
287 const ObjectSpec *spec = ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index);
288 if (spec == NULL) break;
289
290 /* Get the extra message for the GUI */
291 if (HasBit(spec->callback_mask, CBM_OBJ_FUND_MORE_TEXT)) {
292 uint16 callback_res = GetObjectCallback(CBID_OBJECT_FUND_MORE_TEXT, 0, 0, spec, NULL, INVALID_TILE, _selected_object_view);
293 if (callback_res != CALLBACK_FAILED && callback_res != 0x400) {
294 if (callback_res > 0x400) {
295 ErrorUnknownCallbackResult(spec->grf_prop.grffile->grfid, CBID_OBJECT_FUND_MORE_TEXT, callback_res);
296 } else {
297 StringID message = GetGRFStringID(spec->grf_prop.grffile->grfid, 0xD000 + callback_res);
298 if (message != STR_NULL && message != STR_UNDEFINED) {
299 StartTextRefStackUsage(spec->grf_prop.grffile, 6);
300 /* Use all the available space left from where we stand up to the
301 * end of the window. We ALSO enlarge the window if needed, so we
302 * can 'go' wild with the bottom of the window. */
303 int y = DrawStringMultiLine(r.left, r.right, r.top, UINT16_MAX, message, TC_ORANGE) - r.top;
304 StopTextRefStackUsage();
305 if (y > this->info_height) {
306 BuildObjectWindow *bow = const_cast<BuildObjectWindow *>(this);
307 bow->info_height = y + 2;
308 bow->ReInit();
309 }
310 }
311 }
312 }
313 }
314 }
315 }
316 }
317
322 void SelectOtherClass(ObjectClassID object_class_index)
323 {
324 _selected_object_class = object_class_index;
325 this->GetWidget<NWidgetMatrix>(WID_BO_SELECT_MATRIX)->SetCount(ObjectClass::Get(_selected_object_class)->GetUISpecCount());
326 }
327
332 void SelectOtherObject(int object_index)
333 {
334 _selected_object_index = object_index;
335 if (_selected_object_index != -1) {
336 const ObjectSpec *spec = ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index);
337 _selected_object_view = min(_selected_object_view, spec->views - 1);
338 this->ReInit();
339 } else {
340 _selected_object_view = 0;
341 }
342
343 if (_selected_object_index != -1) {
344 SetObjectToPlaceWnd(SPR_CURSOR_TRANSMITTER, PAL_NONE, HT_RECT, this);
345 }
346
347 this->UpdateButtons(_selected_object_class, _selected_object_index, _selected_object_view);
348 }
349
350 void UpdateSelectSize()
351 {
352 if (_selected_object_index == -1) {
353 SetTileSelectSize(1, 1);
354 } else {
355 const ObjectSpec *spec = ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index);
356 int w = GB(spec->size, HasBit(_selected_object_view, 0) ? 4 : 0, 4);
357 int h = GB(spec->size, HasBit(_selected_object_view, 0) ? 0 : 4, 4);
358 SetTileSelectSize(w, h);
359 }
360 }
361
368 void UpdateButtons(ObjectClassID sel_class, int sel_index, uint sel_view)
369 {
370 int view_number, object_number;
371 if (sel_index == -1) {
372 view_number = -1; // If no object selected, also hide the selected view.
373 object_number = -1;
374 } else {
375 view_number = sel_view;
376 object_number = ObjectClass::Get(sel_class)->GetUIFromIndex(sel_index);
377 }
378
379 this->GetWidget<NWidgetMatrix>(WID_BO_OBJECT_MATRIX)->SetClicked(view_number);
380 this->GetWidget<NWidgetMatrix>(WID_BO_SELECT_MATRIX)->SetClicked(object_number);
381 this->UpdateSelectSize();
382 this->SetDirty();
383 }
384
385 virtual void OnResize()
386 {
387 this->vscroll->SetCapacityFromWidget(this, WID_BO_CLASS_LIST);
388 }
389
390 virtual void OnClick(Point pt, int widget, int click_count)
391 {
392 switch (GB(widget, 0, 16)) {
393 case WID_BO_CLASS_LIST: {
394 int num_clicked = this->vscroll->GetPosition() + (pt.y - this->nested_array[widget]->pos_y) / this->line_height;
395 if (num_clicked >= (int)ObjectClass::GetUIClassCount()) break;
396
397 this->SelectOtherClass(ObjectClass::GetUIClass(num_clicked));
398 this->SelectFirstAvailableObject(false);
399 break;
400 }
401
402 case WID_BO_SELECT_IMAGE: {
403 ObjectClass *objclass = ObjectClass::Get(_selected_object_class);
404 int num_clicked = objclass->GetIndexFromUI(GB(widget, 16, 16));
405 if (num_clicked >= 0 && objclass->GetSpec(num_clicked)->IsAvailable()) this->SelectOtherObject(num_clicked);
406 break;
407 }
408
409 case WID_BO_OBJECT_SPRITE:
410 if (_selected_object_index != -1) {
411 _selected_object_view = GB(widget, 16, 16);
412 this->SelectOtherObject(_selected_object_index); // Re-select the object for a different view.
413 }
414 break;
415 }
416 }
417
418 virtual void OnPlaceObject(Point pt, TileIndex tile)
419 {
420 DoCommandP(tile, ObjectClass::Get(_selected_object_class)->GetSpec(_selected_object_index)->Index(),
421 _selected_object_view, CMD_BUILD_OBJECT | CMD_MSG(STR_ERROR_CAN_T_BUILD_OBJECT), CcTerraform);
422 }
423
424 virtual void OnPlaceObjectAbort()
425 {
426 this->UpdateButtons(_selected_object_class, -1, _selected_object_view);
427 }
428
434 void SelectFirstAvailableObject(bool change_class)
435 {
436 /* First try to select an object in the selected class. */
437 ObjectClass *sel_objclass = ObjectClass::Get(_selected_object_class);
438 for (uint i = 0; i < sel_objclass->GetSpecCount(); i++) {
439 const ObjectSpec *spec = sel_objclass->GetSpec(i);
440 if (spec->IsAvailable()) {
441 this->SelectOtherObject(i);
442 return;
443 }
444 }
445 if (change_class) {
446 /* If that fails, select the first available object
447 * from a random class. */
448 for (ObjectClassID j = OBJECT_CLASS_BEGIN; j < OBJECT_CLASS_MAX; j++) {
449 ObjectClass *objclass = ObjectClass::Get(j);
450 for (uint i = 0; i < objclass->GetSpecCount(); i++) {
451 const ObjectSpec *spec = objclass->GetSpec(i);
452 if (spec->IsAvailable()) {
453 this->SelectOtherClass(j);
454 this->SelectOtherObject(i);
455 return;
456 }
457 }
458 }
459 }
460 /* If all objects are unavailable, select nothing... */
461 if (ObjectClass::Get(_selected_object_class)->GetUISpecCount() == 0) {
462 /* ... but make sure that the class is not empty. */
463 for (ObjectClassID j = OBJECT_CLASS_BEGIN; j < OBJECT_CLASS_MAX; j++) {
464 if (ObjectClass::Get(j)->GetUISpecCount() > 0) {
465 this->SelectOtherClass(j);
466 break;
467 }
468 }
469 }
470 this->SelectOtherObject(-1);
471 }
472 };
473
474 static const NWidgetPart _nested_build_object_widgets[] = {
475 NWidget(NWID_HORIZONTAL),
476 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
477 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_OBJECT_BUILD_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
478 NWidget(WWT_DEFSIZEBOX, COLOUR_DARK_GREEN),
479 EndContainer(),
480 NWidget(WWT_PANEL, COLOUR_DARK_GREEN),
481 NWidget(NWID_HORIZONTAL), SetPadding(2, 0, 0, 0),
482 NWidget(NWID_VERTICAL),
483 NWidget(NWID_HORIZONTAL), SetPadding(0, 5, 2, 5),
484 NWidget(WWT_MATRIX, COLOUR_GREY, WID_BO_CLASS_LIST), SetFill(1, 0), SetMatrixDataTip(1, 0, STR_OBJECT_BUILD_CLASS_TOOLTIP), SetScrollbar(WID_BO_SCROLLBAR),
485 NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_BO_SCROLLBAR),
486 EndContainer(),
487 NWidget(NWID_HORIZONTAL), SetPadding(0, 5, 0, 5),
488 NWidget(NWID_MATRIX, COLOUR_DARK_GREEN, WID_BO_OBJECT_MATRIX), SetPIP(0, 2, 0),
489 NWidget(WWT_PANEL, COLOUR_GREY, WID_BO_OBJECT_SPRITE), SetDataTip(0x0, STR_OBJECT_BUILD_PREVIEW_TOOLTIP), EndContainer(),
490 EndContainer(),
491 EndContainer(),
492 NWidget(WWT_TEXT, COLOUR_DARK_GREEN, WID_BO_OBJECT_NAME), SetDataTip(STR_ORANGE_STRING, STR_NULL), SetPadding(2, 5, 2, 5),
493 NWidget(WWT_TEXT, COLOUR_DARK_GREEN, WID_BO_OBJECT_SIZE), SetDataTip(STR_OBJECT_BUILD_SIZE, STR_NULL), SetPadding(2, 5, 2, 5),
494 EndContainer(),
495 NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetScrollbar(WID_BO_SELECT_SCROLL),
496 NWidget(NWID_HORIZONTAL),
497 NWidget(NWID_MATRIX, COLOUR_DARK_GREEN, WID_BO_SELECT_MATRIX), SetFill(0, 1), SetPIP(0, 2, 0),
498 NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BO_SELECT_IMAGE), SetMinimalSize(66, 60), SetDataTip(0x0, STR_OBJECT_BUILD_TOOLTIP),
499 SetFill(0, 0), SetResize(0, 0), SetScrollbar(WID_BO_SELECT_SCROLL),
500 EndContainer(),
501 EndContainer(),
502 NWidget(NWID_VSCROLLBAR, COLOUR_DARK_GREEN, WID_BO_SELECT_SCROLL),
503 EndContainer(),
504 EndContainer(),
505 EndContainer(),
506 NWidget(NWID_HORIZONTAL),
507 NWidget(WWT_EMPTY, INVALID_COLOUR, WID_BO_INFO), SetPadding(2, 5, 0, 5), SetFill(1, 0), SetResize(1, 0),
508 NWidget(NWID_VERTICAL),
509 NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetFill(0, 1), EndContainer(),
510 NWidget(WWT_RESIZEBOX, COLOUR_DARK_GREEN),
511 EndContainer(),
512 EndContainer(),
513 EndContainer(),
514 };
515
516 static WindowDesc _build_object_desc(
517 WDP_AUTO, "build_object", 0, 0,
518 WC_BUILD_OBJECT, WC_BUILD_TOOLBAR,
519 WDF_CONSTRUCTION,
520 _nested_build_object_widgets, lengthof(_nested_build_object_widgets)
521 );
522
527 void ShowBuildObjectPicker()
528 {
529 /* Don't show the place object button when there are no objects to place. */
530 if (ObjectClass::GetUIClassCount() > 0) {
531 AllocateWindowDescFront<BuildObjectWindow>(&_build_object_desc, 0);
532 }
533 }
534
536 void InitializeObjectGui()
537 {
538 _selected_object_class = (ObjectClassID)0;
539 }