OpenTTD Source  20241108-master-g80f628063a
win32_v.cpp
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1 /*
2  * This file is part of OpenTTD.
3  * 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.
4  * 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.
5  * 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/>.
6  */
7 
10 #include "../stdafx.h"
11 #include "../openttd.h"
12 #include "../error_func.h"
13 #include "../gfx_func.h"
14 #include "../os/windows/win32.h"
15 #include "../blitter/factory.hpp"
16 #include "../core/geometry_func.hpp"
17 #include "../core/math_func.hpp"
18 #include "../core/random_func.hpp"
19 #include "../texteff.hpp"
20 #include "../thread.h"
21 #include "../progress.h"
22 #include "../window_gui.h"
23 #include "../window_func.h"
24 #include "../framerate_type.h"
25 #include "../library_loader.h"
26 #include "win32_v.h"
27 #include <windows.h>
28 #include <imm.h>
29 #include <versionhelpers.h>
30 
31 #include "../safeguards.h"
32 
33 /* Missing define in MinGW headers. */
34 #ifndef MAPVK_VK_TO_CHAR
35 #define MAPVK_VK_TO_CHAR (2)
36 #endif
37 
38 #ifndef PM_QS_INPUT
39 #define PM_QS_INPUT 0x20000
40 #endif
41 
42 #ifndef WM_DPICHANGED
43 #define WM_DPICHANGED 0x02E0
44 #endif
45 
46 bool _window_maximize;
47 static Dimension _bck_resolution;
48 DWORD _imm_props;
49 
51 
52 bool VideoDriver_Win32Base::ClaimMousePointer()
53 {
54  MyShowCursor(false, true);
55  return true;
56 }
57 
59  uint8_t vk_from;
60  uint8_t vk_count;
61  uint8_t map_to;
62 };
63 
64 #define AS(x, z) {x, 1, z}
65 #define AM(x, y, z, w) {x, y - x + 1, z}
66 
67 static const Win32VkMapping _vk_mapping[] = {
68  /* Pageup stuff + up/down */
69  AM(VK_PRIOR, VK_DOWN, WKC_PAGEUP, WKC_DOWN),
70  /* Map letters & digits */
71  AM('A', 'Z', 'A', 'Z'),
72  AM('0', '9', '0', '9'),
73 
74  AS(VK_ESCAPE, WKC_ESC),
75  AS(VK_PAUSE, WKC_PAUSE),
76  AS(VK_BACK, WKC_BACKSPACE),
77  AM(VK_INSERT, VK_DELETE, WKC_INSERT, WKC_DELETE),
78 
79  AS(VK_SPACE, WKC_SPACE),
80  AS(VK_RETURN, WKC_RETURN),
81  AS(VK_TAB, WKC_TAB),
82 
83  /* Function keys */
84  AM(VK_F1, VK_F12, WKC_F1, WKC_F12),
85 
86  /* Numeric part */
87  AM(VK_NUMPAD0, VK_NUMPAD9, '0', '9'),
88  AS(VK_DIVIDE, WKC_NUM_DIV),
89  AS(VK_MULTIPLY, WKC_NUM_MUL),
90  AS(VK_SUBTRACT, WKC_NUM_MINUS),
91  AS(VK_ADD, WKC_NUM_PLUS),
92  AS(VK_DECIMAL, WKC_NUM_DECIMAL),
93 
94  /* Other non-letter keys */
95  AS(0xBF, WKC_SLASH),
96  AS(0xBA, WKC_SEMICOLON),
97  AS(0xBB, WKC_EQUALS),
98  AS(0xDB, WKC_L_BRACKET),
99  AS(0xDC, WKC_BACKSLASH),
100  AS(0xDD, WKC_R_BRACKET),
101 
102  AS(0xDE, WKC_SINGLEQUOTE),
103  AS(0xBC, WKC_COMMA),
104  AS(0xBD, WKC_MINUS),
105  AS(0xBE, WKC_PERIOD)
106 };
107 
108 static uint MapWindowsKey(uint sym)
109 {
110  uint key = 0;
111 
112  for (const auto &map : _vk_mapping) {
113  if (IsInsideBS(sym, map.vk_from, map.vk_count)) {
114  key = sym - map.vk_from + map.map_to;
115  break;
116  }
117  }
118 
119  if (GetAsyncKeyState(VK_SHIFT) < 0) key |= WKC_SHIFT;
120  if (GetAsyncKeyState(VK_CONTROL) < 0) key |= WKC_CTRL;
121  if (GetAsyncKeyState(VK_MENU) < 0) key |= WKC_ALT;
122  return key;
123 }
124 
127 {
128  /* Check modes for the relevant fullscreen bpp */
129  return _support8bpp != S8BPP_HARDWARE ? 32 : BlitterFactory::GetCurrentBlitter()->GetScreenDepth();
130 }
131 
138 bool VideoDriver_Win32Base::MakeWindow(bool full_screen, bool resize)
139 {
140  /* full_screen is whether the new window should be fullscreen,
141  * _wnd.fullscreen is whether the current window is. */
142  _fullscreen = full_screen;
143 
144  /* recreate window? */
145  if ((full_screen != this->fullscreen) && this->main_wnd) {
146  DestroyWindow(this->main_wnd);
147  this->main_wnd = 0;
148  }
149 
150  if (full_screen) {
151  DEVMODE settings;
152 
153  memset(&settings, 0, sizeof(settings));
154  settings.dmSize = sizeof(settings);
155  settings.dmFields =
156  DM_BITSPERPEL |
157  DM_PELSWIDTH |
158  DM_PELSHEIGHT;
159  settings.dmBitsPerPel = this->GetFullscreenBpp();
160  settings.dmPelsWidth = this->width_org;
161  settings.dmPelsHeight = this->height_org;
162 
163  /* Check for 8 bpp support. */
164  if (settings.dmBitsPerPel == 8 && ChangeDisplaySettings(&settings, CDS_FULLSCREEN | CDS_TEST) != DISP_CHANGE_SUCCESSFUL) {
165  settings.dmBitsPerPel = 32;
166  }
167 
168  /* Test fullscreen with current resolution, if it fails use desktop resolution. */
169  if (ChangeDisplaySettings(&settings, CDS_FULLSCREEN | CDS_TEST) != DISP_CHANGE_SUCCESSFUL) {
170  RECT r;
171  GetWindowRect(GetDesktopWindow(), &r);
172  /* Guard against recursion. If we already failed here once, just fall through to
173  * the next ChangeDisplaySettings call which will fail and error out appropriately. */
174  if ((int)settings.dmPelsWidth != r.right - r.left || (int)settings.dmPelsHeight != r.bottom - r.top) {
175  return this->ChangeResolution(r.right - r.left, r.bottom - r.top);
176  }
177  }
178 
179  if (ChangeDisplaySettings(&settings, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL) {
180  this->MakeWindow(false, resize); // don't care about the result
181  return false; // the request failed
182  }
183  } else if (this->fullscreen) {
184  /* restore display? */
185  ChangeDisplaySettings(nullptr, 0);
186  /* restore the resolution */
187  this->width = _bck_resolution.width;
188  this->height = _bck_resolution.height;
189  }
190 
191  {
192  RECT r;
193  DWORD style, showstyle;
194  int w, h;
195 
196  showstyle = SW_SHOWNORMAL;
197  this->fullscreen = full_screen;
198  if (this->fullscreen) {
199  style = WS_POPUP;
200  SetRect(&r, 0, 0, this->width_org, this->height_org);
201  } else {
202  style = WS_OVERLAPPEDWINDOW;
203  /* On window creation, check if we were in maximize mode before */
204  if (_window_maximize) showstyle = SW_SHOWMAXIMIZED;
205  SetRect(&r, 0, 0, this->width, this->height);
206  }
207 
208  AdjustWindowRect(&r, style, FALSE);
209  w = r.right - r.left;
210  h = r.bottom - r.top;
211 
212  if (this->main_wnd != nullptr) {
213  if (!_window_maximize && resize) SetWindowPos(this->main_wnd, 0, 0, 0, w, h, SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOZORDER | SWP_NOMOVE);
214  } else {
215  int x = 0;
216  int y = 0;
217 
218  /* For windowed mode, center on the workspace of the primary display. */
219  if (!this->fullscreen) {
220  MONITORINFO mi;
221  mi.cbSize = sizeof(mi);
222  GetMonitorInfo(MonitorFromWindow(0, MONITOR_DEFAULTTOPRIMARY), &mi);
223 
224  x = (mi.rcWork.right - mi.rcWork.left - w) / 2;
225  y = (mi.rcWork.bottom - mi.rcWork.top - h) / 2;
226  }
227 
228  std::string caption = VideoDriver::GetCaption();
229  this->main_wnd = CreateWindow(L"OTTD", OTTD2FS(caption).c_str(), style, x, y, w, h, 0, 0, GetModuleHandle(nullptr), this);
230  if (this->main_wnd == nullptr) UserError("CreateWindow failed");
231  ShowWindow(this->main_wnd, showstyle);
232  }
233  }
234 
236 
237  GameSizeChanged();
238  return true;
239 }
240 
242 static LRESULT HandleCharMsg(uint keycode, char32_t charcode)
243 {
244  static char32_t prev_char = 0;
245 
246  /* Did we get a lead surrogate? If yes, store and exit. */
247  if (Utf16IsLeadSurrogate(charcode)) {
248  if (prev_char != 0) Debug(driver, 1, "Got two UTF-16 lead surrogates, dropping the first one");
249  prev_char = charcode;
250  return 0;
251  }
252 
253  /* Stored lead surrogate and incoming trail surrogate? Combine and forward to input handling. */
254  if (prev_char != 0) {
255  if (Utf16IsTrailSurrogate(charcode)) {
256  charcode = Utf16DecodeSurrogate(prev_char, charcode);
257  } else {
258  Debug(driver, 1, "Got an UTF-16 lead surrogate without a trail surrogate, dropping the lead surrogate");
259  }
260  }
261  prev_char = 0;
262 
263  HandleKeypress(keycode, charcode);
264 
265  return 0;
266 }
267 
270 {
271  return (_imm_props & IME_PROP_AT_CARET) && !(_imm_props & IME_PROP_SPECIAL_UI);
272 }
273 
275 static void SetCompositionPos(HWND hwnd)
276 {
277  HIMC hIMC = ImmGetContext(hwnd);
278  if (hIMC != nullptr) {
279  COMPOSITIONFORM cf;
280  cf.dwStyle = CFS_POINT;
281 
282  if (EditBoxInGlobalFocus()) {
283  /* Get caret position. */
284  Point pt = _focused_window->GetCaretPosition();
285  cf.ptCurrentPos.x = _focused_window->left + pt.x;
286  cf.ptCurrentPos.y = _focused_window->top + pt.y;
287  } else {
288  cf.ptCurrentPos.x = 0;
289  cf.ptCurrentPos.y = 0;
290  }
291  ImmSetCompositionWindow(hIMC, &cf);
292  }
293  ImmReleaseContext(hwnd, hIMC);
294 }
295 
297 static void SetCandidatePos(HWND hwnd)
298 {
299  HIMC hIMC = ImmGetContext(hwnd);
300  if (hIMC != nullptr) {
301  CANDIDATEFORM cf;
302  cf.dwIndex = 0;
303  cf.dwStyle = CFS_EXCLUDE;
304 
305  if (EditBoxInGlobalFocus()) {
306  Point pt = _focused_window->GetCaretPosition();
307  cf.ptCurrentPos.x = _focused_window->left + pt.x;
308  cf.ptCurrentPos.y = _focused_window->top + pt.y;
309  if (_focused_window->window_class == WC_CONSOLE) {
310  cf.rcArea.left = _focused_window->left;
311  cf.rcArea.top = _focused_window->top;
312  cf.rcArea.right = _focused_window->left + _focused_window->width;
313  cf.rcArea.bottom = _focused_window->top + _focused_window->height;
314  } else {
315  cf.rcArea.left = _focused_window->left + _focused_window->nested_focus->pos_x;
316  cf.rcArea.top = _focused_window->top + _focused_window->nested_focus->pos_y;
317  cf.rcArea.right = cf.rcArea.left + _focused_window->nested_focus->current_x;
318  cf.rcArea.bottom = cf.rcArea.top + _focused_window->nested_focus->current_y;
319  }
320  } else {
321  cf.ptCurrentPos.x = 0;
322  cf.ptCurrentPos.y = 0;
323  SetRectEmpty(&cf.rcArea);
324  }
325  ImmSetCandidateWindow(hIMC, &cf);
326  }
327  ImmReleaseContext(hwnd, hIMC);
328 }
329 
331 static LRESULT HandleIMEComposition(HWND hwnd, WPARAM wParam, LPARAM lParam)
332 {
333  HIMC hIMC = ImmGetContext(hwnd);
334 
335  if (hIMC != nullptr) {
336  if (lParam & GCS_RESULTSTR) {
337  /* Read result string from the IME. */
338  LONG len = ImmGetCompositionString(hIMC, GCS_RESULTSTR, nullptr, 0); // Length is always in bytes, even in UNICODE build.
339  std::wstring str(len + 1, L'\0');
340  len = ImmGetCompositionString(hIMC, GCS_RESULTSTR, str.data(), len);
341  str[len / sizeof(wchar_t)] = L'\0';
342 
343  /* Transmit text to windowing system. */
344  if (len > 0) {
345  HandleTextInput(nullptr, true); // Clear marked string.
346  HandleTextInput(FS2OTTD(str).c_str());
347  }
348  SetCompositionPos(hwnd);
349 
350  /* Don't pass the result string on to the default window proc. */
351  lParam &= ~(GCS_RESULTSTR | GCS_RESULTCLAUSE | GCS_RESULTREADCLAUSE | GCS_RESULTREADSTR);
352  }
353 
354  if ((lParam & GCS_COMPSTR) && DrawIMECompositionString()) {
355  /* Read composition string from the IME. */
356  LONG len = ImmGetCompositionString(hIMC, GCS_COMPSTR, nullptr, 0); // Length is always in bytes, even in UNICODE build.
357  std::wstring str(len + 1, L'\0');
358  len = ImmGetCompositionString(hIMC, GCS_COMPSTR, str.data(), len);
359  str[len / sizeof(wchar_t)] = L'\0';
360 
361  if (len > 0) {
362  static char utf8_buf[1024];
363  convert_from_fs(str.c_str(), utf8_buf);
364 
365  /* Convert caret position from bytes in the input string to a position in the UTF-8 encoded string. */
366  LONG caret_bytes = ImmGetCompositionString(hIMC, GCS_CURSORPOS, nullptr, 0);
367  const char *caret = utf8_buf;
368  for (const wchar_t *c = str.c_str(); *c != '\0' && *caret != '\0' && caret_bytes > 0; c++, caret_bytes--) {
369  /* Skip DBCS lead bytes or leading surrogates. */
370  if (Utf16IsLeadSurrogate(*c)) {
371  c++;
372  caret_bytes--;
373  }
374  Utf8Consume(&caret);
375  }
376 
377  HandleTextInput(utf8_buf, true, caret);
378  } else {
379  HandleTextInput(nullptr, true);
380  }
381 
382  lParam &= ~(GCS_COMPSTR | GCS_COMPATTR | GCS_COMPCLAUSE | GCS_CURSORPOS | GCS_DELTASTART);
383  }
384  }
385  ImmReleaseContext(hwnd, hIMC);
386 
387  return lParam != 0 ? DefWindowProc(hwnd, WM_IME_COMPOSITION, wParam, lParam) : 0;
388 }
389 
391 static void CancelIMEComposition(HWND hwnd)
392 {
393  HIMC hIMC = ImmGetContext(hwnd);
394  if (hIMC != nullptr) ImmNotifyIME(hIMC, NI_COMPOSITIONSTR, CPS_CANCEL, 0);
395  ImmReleaseContext(hwnd, hIMC);
396  /* Clear any marked string from the current edit box. */
397  HandleTextInput(nullptr, true);
398 }
399 
400 LRESULT CALLBACK WndProcGdi(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
401 {
402  static uint32_t keycode = 0;
403  static bool console = false;
404 
405  VideoDriver_Win32Base *video_driver = (VideoDriver_Win32Base *)GetWindowLongPtr(hwnd, GWLP_USERDATA);
406 
407  switch (msg) {
408  case WM_CREATE:
409  SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)((LPCREATESTRUCT)lParam)->lpCreateParams);
410  _cursor.in_window = false; // Win32 has mouse tracking.
411  SetCompositionPos(hwnd);
412  _imm_props = ImmGetProperty(GetKeyboardLayout(0), IGP_PROPERTY);
413  break;
414 
415  case WM_PAINT: {
416  RECT r;
417  GetUpdateRect(hwnd, &r, FALSE);
418  video_driver->MakeDirty(r.left, r.top, r.right - r.left, r.bottom - r.top);
419 
420  ValidateRect(hwnd, nullptr);
421  return 0;
422  }
423 
424  case WM_PALETTECHANGED:
425  if ((HWND)wParam == hwnd) return 0;
426  [[fallthrough]];
427 
428  case WM_QUERYNEWPALETTE:
429  video_driver->PaletteChanged(hwnd);
430  return 0;
431 
432  case WM_CLOSE:
433  HandleExitGameRequest();
434  return 0;
435 
436  case WM_DESTROY:
437  if (_window_maximize) _cur_resolution = _bck_resolution;
438  return 0;
439 
440  case WM_LBUTTONDOWN:
441  SetCapture(hwnd);
442  _left_button_down = true;
444  return 0;
445 
446  case WM_LBUTTONUP:
447  ReleaseCapture();
448  _left_button_down = false;
449  _left_button_clicked = false;
451  return 0;
452 
453  case WM_RBUTTONDOWN:
454  SetCapture(hwnd);
455  _right_button_down = true;
456  _right_button_clicked = true;
458  return 0;
459 
460  case WM_RBUTTONUP:
461  ReleaseCapture();
462  _right_button_down = false;
464  return 0;
465 
466  case WM_MOUSELEAVE:
467  UndrawMouseCursor();
468  _cursor.in_window = false;
469 
470  if (!_left_button_down && !_right_button_down) MyShowCursor(true);
471  return 0;
472 
473  case WM_MOUSEMOVE: {
474  int x = (int16_t)LOWORD(lParam);
475  int y = (int16_t)HIWORD(lParam);
476 
477  /* If the mouse was not in the window and it has moved it means it has
478  * come into the window, so start drawing the mouse. Also start
479  * tracking the mouse for exiting the window */
480  if (!_cursor.in_window) {
481  _cursor.in_window = true;
482  TRACKMOUSEEVENT tme;
483  tme.cbSize = sizeof(tme);
484  tme.dwFlags = TME_LEAVE;
485  tme.hwndTrack = hwnd;
486 
487  TrackMouseEvent(&tme);
488  }
489 
490  if (_cursor.fix_at) {
491  /* Get all queued mouse events now in case we have to warp the cursor. In the
492  * end, we only care about the current mouse position and not bygone events. */
493  MSG m;
494  while (PeekMessage(&m, hwnd, WM_MOUSEMOVE, WM_MOUSEMOVE, PM_REMOVE | PM_NOYIELD | PM_QS_INPUT)) {
495  x = (int16_t)LOWORD(m.lParam);
496  y = (int16_t)HIWORD(m.lParam);
497  }
498  }
499 
500  if (_cursor.UpdateCursorPosition(x, y)) {
501  POINT pt;
502  pt.x = _cursor.pos.x;
503  pt.y = _cursor.pos.y;
504  ClientToScreen(hwnd, &pt);
505  SetCursorPos(pt.x, pt.y);
506  }
507  MyShowCursor(false);
509  return 0;
510  }
511 
512  case WM_INPUTLANGCHANGE:
513  _imm_props = ImmGetProperty(GetKeyboardLayout(0), IGP_PROPERTY);
514  break;
515 
516  case WM_IME_SETCONTEXT:
517  /* Don't show the composition window if we draw the string ourself. */
518  if (DrawIMECompositionString()) lParam &= ~ISC_SHOWUICOMPOSITIONWINDOW;
519  break;
520 
521  case WM_IME_STARTCOMPOSITION:
522  SetCompositionPos(hwnd);
523  if (DrawIMECompositionString()) return 0;
524  break;
525 
526  case WM_IME_COMPOSITION:
527  return HandleIMEComposition(hwnd, wParam, lParam);
528 
529  case WM_IME_ENDCOMPOSITION:
530  /* Clear any pending composition string. */
531  HandleTextInput(nullptr, true);
532  if (DrawIMECompositionString()) return 0;
533  break;
534 
535  case WM_IME_NOTIFY:
536  if (wParam == IMN_OPENCANDIDATE) SetCandidatePos(hwnd);
537  break;
538 
539  case WM_DEADCHAR:
540  console = GB(lParam, 16, 8) == 41;
541  return 0;
542 
543  case WM_CHAR: {
544  uint scancode = GB(lParam, 16, 8);
545  uint charcode = wParam;
546 
547  /* If the console key is a dead-key, we need to press it twice to get a WM_CHAR message.
548  * But we then get two WM_CHAR messages, so ignore the first one */
549  if (console && scancode == 41) {
550  console = false;
551  return 0;
552  }
553 
554  /* IMEs and other input methods sometimes send a WM_CHAR without a WM_KEYDOWN,
555  * clear the keycode so a previous WM_KEYDOWN doesn't become 'stuck'. */
556  uint cur_keycode = keycode;
557  keycode = 0;
558 
559  return HandleCharMsg(cur_keycode, charcode);
560  }
561 
562  case WM_KEYDOWN: {
563  /* No matter the keyboard layout, we will map the '~' to the console. */
564  uint scancode = GB(lParam, 16, 8);
565  keycode = scancode == 41 ? (uint)WKC_BACKQUOTE : MapWindowsKey(wParam);
566 
567  uint charcode = MapVirtualKey(wParam, MAPVK_VK_TO_CHAR);
568 
569  /* No character translation? */
570  if (charcode == 0) {
571  HandleKeypress(keycode, 0);
572  return 0;
573  }
574 
575  /* If an edit box is in focus, wait for the corresponding WM_CHAR message. */
576  if (!EditBoxInGlobalFocus()) {
577  /* Is the console key a dead key? If yes, ignore the first key down event. */
578  if (HasBit(charcode, 31) && !console) {
579  if (scancode == 41) {
580  console = true;
581  return 0;
582  }
583  }
584  console = false;
585 
586  /* IMEs and other input methods sometimes send a WM_CHAR without a WM_KEYDOWN,
587  * clear the keycode so a previous WM_KEYDOWN doesn't become 'stuck'. */
588  uint cur_keycode = keycode;
589  keycode = 0;
590 
591  return HandleCharMsg(cur_keycode, LOWORD(charcode));
592  }
593 
594  return 0;
595  }
596 
597  case WM_SYSKEYDOWN: // user presses F10 or Alt, both activating the title-menu
598  switch (wParam) {
599  case VK_RETURN:
600  case 'F': // Full Screen on ALT + ENTER/F
601  ToggleFullScreen(!video_driver->fullscreen);
602  return 0;
603 
604  case VK_MENU: // Just ALT
605  return 0; // do nothing
606 
607  case VK_F10: // F10, ignore activation of menu
608  HandleKeypress(MapWindowsKey(wParam), 0);
609  return 0;
610 
611  default: // ALT in combination with something else
612  HandleKeypress(MapWindowsKey(wParam), 0);
613  break;
614  }
615  break;
616 
617  case WM_SIZE:
618  if (wParam != SIZE_MINIMIZED) {
619  /* Set maximized flag when we maximize (obviously), but also when we
620  * switched to fullscreen from a maximized state */
621  _window_maximize = (wParam == SIZE_MAXIMIZED || (_window_maximize && _fullscreen));
622  if (_window_maximize || _fullscreen) _bck_resolution = _cur_resolution;
623  video_driver->ClientSizeChanged(LOWORD(lParam), HIWORD(lParam));
624  }
625  return 0;
626 
627  case WM_SIZING: {
628  RECT *r = (RECT*)lParam;
629  RECT r2;
630  int w, h;
631 
632  SetRect(&r2, 0, 0, 0, 0);
633  AdjustWindowRect(&r2, GetWindowLong(hwnd, GWL_STYLE), FALSE);
634 
635  w = r->right - r->left - (r2.right - r2.left);
636  h = r->bottom - r->top - (r2.bottom - r2.top);
637  w = std::max(w, 64);
638  h = std::max(h, 64);
639  SetRect(&r2, 0, 0, w, h);
640 
641  AdjustWindowRect(&r2, GetWindowLong(hwnd, GWL_STYLE), FALSE);
642  w = r2.right - r2.left;
643  h = r2.bottom - r2.top;
644 
645  switch (wParam) {
646  case WMSZ_BOTTOM:
647  r->bottom = r->top + h;
648  break;
649 
650  case WMSZ_BOTTOMLEFT:
651  r->bottom = r->top + h;
652  r->left = r->right - w;
653  break;
654 
655  case WMSZ_BOTTOMRIGHT:
656  r->bottom = r->top + h;
657  r->right = r->left + w;
658  break;
659 
660  case WMSZ_LEFT:
661  r->left = r->right - w;
662  break;
663 
664  case WMSZ_RIGHT:
665  r->right = r->left + w;
666  break;
667 
668  case WMSZ_TOP:
669  r->top = r->bottom - h;
670  break;
671 
672  case WMSZ_TOPLEFT:
673  r->top = r->bottom - h;
674  r->left = r->right - w;
675  break;
676 
677  case WMSZ_TOPRIGHT:
678  r->top = r->bottom - h;
679  r->right = r->left + w;
680  break;
681  }
682  return TRUE;
683  }
684 
685  case WM_DPICHANGED: {
686  auto did_adjust = AdjustGUIZoom(true);
687 
688  /* Resize the window to match the new DPI setting. */
689  RECT *prcNewWindow = (RECT *)lParam;
690  SetWindowPos(hwnd,
691  nullptr,
692  prcNewWindow->left,
693  prcNewWindow->top,
694  prcNewWindow->right - prcNewWindow->left,
695  prcNewWindow->bottom - prcNewWindow->top,
696  SWP_NOZORDER | SWP_NOACTIVATE);
697 
698  if (did_adjust) ReInitAllWindows(true);
699 
700  return 0;
701  }
702 
703 /* needed for wheel */
704 #if !defined(WM_MOUSEWHEEL)
705 # define WM_MOUSEWHEEL 0x020A
706 #endif /* WM_MOUSEWHEEL */
707 #if !defined(GET_WHEEL_DELTA_WPARAM)
708 # define GET_WHEEL_DELTA_WPARAM(wparam) ((short)HIWORD(wparam))
709 #endif /* GET_WHEEL_DELTA_WPARAM */
710 
711  case WM_MOUSEWHEEL: {
712  int delta = GET_WHEEL_DELTA_WPARAM(wParam);
713 
714  if (delta < 0) {
715  _cursor.wheel++;
716  } else if (delta > 0) {
717  _cursor.wheel--;
718  }
720  return 0;
721  }
722 
723  case WM_SETFOCUS:
724  video_driver->has_focus = true;
725  SetCompositionPos(hwnd);
726  break;
727 
728  case WM_KILLFOCUS:
729  video_driver->has_focus = false;
730  break;
731 
732  case WM_ACTIVATE: {
733  /* Don't do anything if we are closing openttd */
734  if (_exit_game) break;
735 
736  bool active = (LOWORD(wParam) != WA_INACTIVE);
737  bool minimized = (HIWORD(wParam) != 0);
738  if (video_driver->fullscreen) {
739  if (active && minimized) {
740  /* Restore the game window */
741  Dimension d = _bck_resolution; // Save current non-fullscreen window size as it will be overwritten by ShowWindow.
742  ShowWindow(hwnd, SW_RESTORE);
743  _bck_resolution = d;
744  video_driver->MakeWindow(true);
745  } else if (!active && !minimized) {
746  /* Minimise the window and restore desktop */
747  ShowWindow(hwnd, SW_MINIMIZE);
748  ChangeDisplaySettings(nullptr, 0);
749  }
750  }
751  break;
752  }
753  }
754 
755  return DefWindowProc(hwnd, msg, wParam, lParam);
756 }
757 
758 static void RegisterWndClass()
759 {
760  static bool registered = false;
761 
762  if (registered) return;
763 
764  HINSTANCE hinst = GetModuleHandle(nullptr);
765  WNDCLASS wnd = {
766  CS_OWNDC,
767  WndProcGdi,
768  0,
769  0,
770  hinst,
771  LoadIcon(hinst, MAKEINTRESOURCE(100)),
772  LoadCursor(nullptr, IDC_ARROW),
773  0,
774  0,
775  L"OTTD"
776  };
777 
778  registered = true;
779  if (!RegisterClass(&wnd)) UserError("RegisterClass failed");
780 }
781 
782 static const Dimension default_resolutions[] = {
783  { 640, 480 },
784  { 800, 600 },
785  { 1024, 768 },
786  { 1152, 864 },
787  { 1280, 800 },
788  { 1280, 960 },
789  { 1280, 1024 },
790  { 1400, 1050 },
791  { 1600, 1200 },
792  { 1680, 1050 },
793  { 1920, 1200 }
794 };
795 
796 static void FindResolutions(uint8_t bpp)
797 {
798  _resolutions.clear();
799 
800  DEVMODE dm;
801  for (uint i = 0; EnumDisplaySettings(nullptr, i, &dm) != 0; i++) {
802  if (dm.dmBitsPerPel != bpp || dm.dmPelsWidth < 640 || dm.dmPelsHeight < 480) continue;
803  if (std::find(_resolutions.begin(), _resolutions.end(), Dimension(dm.dmPelsWidth, dm.dmPelsHeight)) != _resolutions.end()) continue;
804  _resolutions.emplace_back(dm.dmPelsWidth, dm.dmPelsHeight);
805  }
806 
807  /* We have found no resolutions, show the default list */
808  if (_resolutions.empty()) {
809  _resolutions.assign(std::begin(default_resolutions), std::end(default_resolutions));
810  }
811 
812  SortResolutions();
813 }
814 
815 void VideoDriver_Win32Base::Initialize()
816 {
817  this->UpdateAutoResolution();
818 
819  RegisterWndClass();
820  FindResolutions(this->GetFullscreenBpp());
821 
822  /* fullscreen uses those */
823  this->width = this->width_org = _cur_resolution.width;
824  this->height = this->height_org = _cur_resolution.height;
825 
826  Debug(driver, 2, "Resolution for display: {}x{}", _cur_resolution.width, _cur_resolution.height);
827 }
828 
830 {
831  DestroyWindow(this->main_wnd);
832 
833  if (this->fullscreen) ChangeDisplaySettings(nullptr, 0);
834  MyShowCursor(true);
835 }
836 void VideoDriver_Win32Base::MakeDirty(int left, int top, int width, int height)
837 {
838  Rect r = {left, top, left + width, top + height};
839  this->dirty_rect = BoundingRect(this->dirty_rect, r);
840 }
841 
843 {
844  if (!CopyPalette(_local_palette)) return;
845  this->MakeDirty(0, 0, _screen.width, _screen.height);
846 }
847 
849 {
850  bool old_ctrl_pressed = _ctrl_pressed;
851 
852  _ctrl_pressed = this->has_focus && GetAsyncKeyState(VK_CONTROL) < 0;
853  _shift_pressed = this->has_focus && GetAsyncKeyState(VK_SHIFT) < 0;
854 
855  /* Speedup when pressing tab, except when using ALT+TAB
856  * to switch to another application. */
857  this->fast_forward_key_pressed = this->has_focus && GetAsyncKeyState(VK_TAB) < 0 && GetAsyncKeyState(VK_MENU) >= 0;
858 
859  /* Determine which directional keys are down. */
860  if (this->has_focus) {
861  _dirkeys =
862  (GetAsyncKeyState(VK_LEFT) < 0 ? 1 : 0) +
863  (GetAsyncKeyState(VK_UP) < 0 ? 2 : 0) +
864  (GetAsyncKeyState(VK_RIGHT) < 0 ? 4 : 0) +
865  (GetAsyncKeyState(VK_DOWN) < 0 ? 8 : 0);
866  } else {
867  _dirkeys = 0;
868  }
869 
870  if (old_ctrl_pressed != _ctrl_pressed) HandleCtrlChanged();
871 }
872 
874 {
875  MSG mesg;
876 
877  if (!PeekMessage(&mesg, nullptr, 0, 0, PM_REMOVE)) return false;
878 
879  /* Convert key messages to char messages if we want text input. */
880  if (EditBoxInGlobalFocus()) TranslateMessage(&mesg);
881  DispatchMessage(&mesg);
882 
883  return true;
884 }
885 
887 {
888  this->StartGameThread();
889 
890  for (;;) {
891  if (_exit_game) break;
892 
893  this->Tick();
894  this->SleepTillNextTick();
895  }
896 
897  this->StopGameThread();
898 }
899 
900 void VideoDriver_Win32Base::ClientSizeChanged(int w, int h, bool force)
901 {
902  /* Allocate backing store of the new size. */
903  if (this->AllocateBackingStore(w, h, force)) {
905 
907 
908  GameSizeChanged();
909  }
910 }
911 
913 {
914  if (_window_maximize) ShowWindow(this->main_wnd, SW_SHOWNORMAL);
915 
916  this->width = this->width_org = w;
917  this->height = this->height_org = h;
918 
919  return this->MakeWindow(_fullscreen); // _wnd.fullscreen screws up ingame resolution switching
920 }
921 
923 {
924  bool res = this->MakeWindow(full_screen);
925 
927  return res;
928 }
929 
931 {
934  SetCandidatePos(this->main_wnd);
935 }
936 
937 static BOOL CALLBACK MonitorEnumProc(HMONITOR hMonitor, HDC, LPRECT, LPARAM data)
938 {
939  auto &list = *reinterpret_cast<std::vector<int>*>(data);
940 
941  MONITORINFOEX monitorInfo = {};
942  monitorInfo.cbSize = sizeof(MONITORINFOEX);
943  GetMonitorInfo(hMonitor, &monitorInfo);
944 
945  DEVMODE devMode = {};
946  devMode.dmSize = sizeof(DEVMODE);
947  devMode.dmDriverExtra = 0;
948  EnumDisplaySettings(monitorInfo.szDevice, ENUM_CURRENT_SETTINGS, &devMode);
949 
950  if (devMode.dmDisplayFrequency != 0) list.push_back(devMode.dmDisplayFrequency);
951  return true;
952 }
953 
955 {
956  std::vector<int> rates = {};
957  EnumDisplayMonitors(nullptr, nullptr, MonitorEnumProc, reinterpret_cast<LPARAM>(&rates));
958  return rates;
959 }
960 
962 {
963  return { static_cast<uint>(GetSystemMetrics(SM_CXSCREEN)), static_cast<uint>(GetSystemMetrics(SM_CYSCREEN)) };
964 }
965 
967 {
968  typedef UINT (WINAPI *PFNGETDPIFORWINDOW)(HWND hwnd);
969  typedef UINT (WINAPI *PFNGETDPIFORSYSTEM)(VOID);
970  typedef HRESULT (WINAPI *PFNGETDPIFORMONITOR)(HMONITOR hMonitor, int dpiType, UINT *dpiX, UINT *dpiY);
971 
972  static PFNGETDPIFORWINDOW _GetDpiForWindow = nullptr;
973  static PFNGETDPIFORSYSTEM _GetDpiForSystem = nullptr;
974  static PFNGETDPIFORMONITOR _GetDpiForMonitor = nullptr;
975 
976  static bool init_done = false;
977  if (!init_done) {
978  init_done = true;
979  static LibraryLoader _user32("user32.dll");
980  static LibraryLoader _shcore("shcore.dll");
981  _GetDpiForWindow = _user32.GetFunction("GetDpiForWindow");
982  _GetDpiForSystem = _user32.GetFunction("GetDpiForSystem");
983  _GetDpiForMonitor = _shcore.GetFunction("GetDpiForMonitor");
984  }
985 
986  UINT cur_dpi = 0;
987 
988  if (cur_dpi == 0 && _GetDpiForWindow != nullptr && this->main_wnd != nullptr) {
989  /* Per window DPI is supported since Windows 10 Ver 1607. */
990  cur_dpi = _GetDpiForWindow(this->main_wnd);
991  }
992  if (cur_dpi == 0 && _GetDpiForMonitor != nullptr && this->main_wnd != nullptr) {
993  /* Per monitor is supported since Windows 8.1. */
994  UINT dpiX, dpiY;
995  if (SUCCEEDED(_GetDpiForMonitor(MonitorFromWindow(this->main_wnd, MONITOR_DEFAULTTOPRIMARY), 0 /* MDT_EFFECTIVE_DPI */, &dpiX, &dpiY))) {
996  cur_dpi = dpiX; // X and Y are always identical.
997  }
998  }
999  if (cur_dpi == 0 && _GetDpiForSystem != nullptr) {
1000  /* Fall back to system DPI. */
1001  cur_dpi = _GetDpiForSystem();
1002  }
1003 
1004  return cur_dpi > 0 ? cur_dpi / 96.0f : 1.0f; // Default Windows DPI value is 96.
1005 }
1006 
1008 {
1009  if (this->buffer_locked) return false;
1010  this->buffer_locked = true;
1011 
1012  _screen.dst_ptr = this->GetVideoPointer();
1013  assert(_screen.dst_ptr != nullptr);
1014 
1015  return true;
1016 }
1017 
1019 {
1020  assert(_screen.dst_ptr != nullptr);
1021  if (_screen.dst_ptr != nullptr) {
1022  /* Hand video buffer back to the drawing backend. */
1023  this->ReleaseVideoPointer();
1024  _screen.dst_ptr = nullptr;
1025  }
1026 
1027  this->buffer_locked = false;
1028 }
1029 
1030 
1031 static FVideoDriver_Win32GDI iFVideoDriver_Win32GDI;
1032 
1033 std::optional<std::string_view> VideoDriver_Win32GDI::Start(const StringList &param)
1034 {
1035  if (BlitterFactory::GetCurrentBlitter()->GetScreenDepth() == 0) return "Only real blitters supported";
1036 
1037  this->Initialize();
1038 
1039  this->MakePalette();
1041  this->MakeWindow(_fullscreen);
1042 
1044 
1045  this->is_game_threaded = !GetDriverParamBool(param, "no_threads") && !GetDriverParamBool(param, "no_thread");
1046 
1047  return std::nullopt;
1048 }
1049 
1051 {
1052  DeleteObject(this->gdi_palette);
1053  DeleteObject(this->dib_sect);
1054 
1056 }
1057 
1058 bool VideoDriver_Win32GDI::AllocateBackingStore(int w, int h, bool force)
1059 {
1061 
1062  w = std::max(w, 64);
1063  h = std::max(h, 64);
1064 
1065  if (!force && w == _screen.width && h == _screen.height) return false;
1066 
1067  BITMAPINFO *bi = (BITMAPINFO *)new char[sizeof(BITMAPINFOHEADER) + sizeof(RGBQUAD) * 256]();
1068  bi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
1069 
1070  bi->bmiHeader.biWidth = this->width = w;
1071  bi->bmiHeader.biHeight = -(this->height = h);
1072 
1073  bi->bmiHeader.biPlanes = 1;
1074  bi->bmiHeader.biBitCount = bpp;
1075  bi->bmiHeader.biCompression = BI_RGB;
1076 
1077  if (this->dib_sect) DeleteObject(this->dib_sect);
1078 
1079  HDC dc = GetDC(0);
1080  this->dib_sect = CreateDIBSection(dc, bi, DIB_RGB_COLORS, (VOID **)&this->buffer_bits, nullptr, 0);
1081  if (this->dib_sect == nullptr) {
1082  delete[] bi;
1083  UserError("CreateDIBSection failed");
1084  }
1085  ReleaseDC(0, dc);
1086 
1087  _screen.width = w;
1088  _screen.pitch = (bpp == 8) ? Align(w, 4) : w;
1089  _screen.height = h;
1090  _screen.dst_ptr = this->GetVideoPointer();
1091 
1092  delete[] bi;
1093  return true;
1094 }
1095 
1097 {
1098  assert(BlitterFactory::GetCurrentBlitter()->GetScreenDepth() != 0);
1099  return this->AllocateBackingStore(_screen.width, _screen.height, true) && this->MakeWindow(_fullscreen, false);
1100 }
1101 
1102 void VideoDriver_Win32GDI::MakePalette()
1103 {
1104  CopyPalette(_local_palette, true);
1105 
1106  LOGPALETTE *pal = (LOGPALETTE *)new char[sizeof(LOGPALETTE) + (256 - 1) * sizeof(PALETTEENTRY)]();
1107 
1108  pal->palVersion = 0x300;
1109  pal->palNumEntries = 256;
1110 
1111  for (uint i = 0; i != 256; i++) {
1112  pal->palPalEntry[i].peRed = _local_palette.palette[i].r;
1113  pal->palPalEntry[i].peGreen = _local_palette.palette[i].g;
1114  pal->palPalEntry[i].peBlue = _local_palette.palette[i].b;
1115  pal->palPalEntry[i].peFlags = 0;
1116 
1117  }
1118  this->gdi_palette = CreatePalette(pal);
1119  delete[] pal;
1120  if (this->gdi_palette == nullptr) UserError("CreatePalette failed!\n");
1121 }
1122 
1123 void VideoDriver_Win32GDI::UpdatePalette(HDC dc, uint start, uint count)
1124 {
1125  RGBQUAD rgb[256];
1126 
1127  for (uint i = 0; i != count; i++) {
1128  rgb[i].rgbRed = _local_palette.palette[start + i].r;
1129  rgb[i].rgbGreen = _local_palette.palette[start + i].g;
1130  rgb[i].rgbBlue = _local_palette.palette[start + i].b;
1131  rgb[i].rgbReserved = 0;
1132  }
1133 
1134  SetDIBColorTable(dc, start, count, rgb);
1135 }
1136 
1138 {
1139  HDC hDC = GetWindowDC(hWnd);
1140  HPALETTE hOldPalette = SelectPalette(hDC, this->gdi_palette, FALSE);
1141  UINT nChanged = RealizePalette(hDC);
1142 
1143  SelectPalette(hDC, hOldPalette, TRUE);
1144  ReleaseDC(hWnd, hDC);
1145  if (nChanged != 0) this->MakeDirty(0, 0, _screen.width, _screen.height);
1146 }
1147 
1149 {
1150  PerformanceMeasurer framerate(PFE_VIDEO);
1151 
1152  if (IsEmptyRect(this->dirty_rect)) return;
1153 
1154  HDC dc = GetDC(this->main_wnd);
1155  HDC dc2 = CreateCompatibleDC(dc);
1156 
1157  HBITMAP old_bmp = (HBITMAP)SelectObject(dc2, this->dib_sect);
1158  HPALETTE old_palette = SelectPalette(dc, this->gdi_palette, FALSE);
1159 
1160  if (_local_palette.count_dirty != 0) {
1162 
1163  switch (blitter->UsePaletteAnimation()) {
1165  this->UpdatePalette(dc2, _local_palette.first_dirty, _local_palette.count_dirty);
1166  break;
1167 
1169  blitter->PaletteAnimate(_local_palette);
1170  break;
1171  }
1172 
1174  break;
1175 
1176  default:
1177  NOT_REACHED();
1178  }
1180  }
1181 
1182  BitBlt(dc, 0, 0, this->width, this->height, dc2, 0, 0, SRCCOPY);
1183  SelectPalette(dc, old_palette, TRUE);
1184  SelectObject(dc2, old_bmp);
1185  DeleteDC(dc2);
1186 
1187  ReleaseDC(this->main_wnd, dc);
1188 
1189  this->dirty_rect = {};
1190 }
1191 
1192 #ifdef _DEBUG
1193 /* Keep this function here..
1194  * It allows you to redraw the screen from within the MSVC debugger */
1195 /* static */ int VideoDriver_Win32GDI::RedrawScreenDebug()
1196 {
1197  static int _fooctr;
1198 
1200 
1201  _screen.dst_ptr = drv->GetVideoPointer();
1202  UpdateWindows();
1203 
1204  drv->Paint();
1205  GdiFlush();
1206 
1207  return _fooctr++;
1208 }
1209 #endif
1210 
1211 #ifdef WITH_OPENGL
1212 
1213 #include <GL/gl.h>
1214 #include "../3rdparty/opengl/glext.h"
1215 #include "../3rdparty/opengl/wglext.h"
1216 #include "opengl.h"
1217 
1218 #ifndef PFD_SUPPORT_COMPOSITION
1219 # define PFD_SUPPORT_COMPOSITION 0x00008000
1220 #endif
1221 
1222 static PFNWGLCREATECONTEXTATTRIBSARBPROC _wglCreateContextAttribsARB = nullptr;
1223 static PFNWGLSWAPINTERVALEXTPROC _wglSwapIntervalEXT = nullptr;
1224 static bool _hasWGLARBCreateContextProfile = false;
1225 
1227 static OGLProc GetOGLProcAddressCallback(const char *proc)
1228 {
1229  OGLProc ret = reinterpret_cast<OGLProc>(wglGetProcAddress(proc));
1230  if (ret == nullptr) {
1231  /* Non-extension GL function? Try normal loading. */
1232  ret = reinterpret_cast<OGLProc>(GetProcAddress(GetModuleHandle(L"opengl32"), proc));
1233  }
1234  return ret;
1235 }
1236 
1242 static std::optional<std::string_view> SelectPixelFormat(HDC dc)
1243 {
1244  PIXELFORMATDESCRIPTOR pfd = {
1245  sizeof(PIXELFORMATDESCRIPTOR), // Size of this struct.
1246  1, // Version of this struct.
1247  PFD_DRAW_TO_WINDOW | // Require window support.
1248  PFD_SUPPORT_OPENGL | // Require OpenGL support.
1249  PFD_DOUBLEBUFFER | // Use double buffering.
1250  PFD_DEPTH_DONTCARE,
1251  PFD_TYPE_RGBA, // Request RGBA format.
1252  24, // 24 bpp (excluding alpha).
1253  0, 0, 0, 0, 0, 0, 0, 0, // Colour bits and shift ignored.
1254  0, 0, 0, 0, 0, // No accumulation buffer.
1255  0, 0, // No depth/stencil buffer.
1256  0, // No aux buffers.
1257  PFD_MAIN_PLANE, // Main layer.
1258  0, 0, 0, 0 // Ignored/reserved.
1259  };
1260 
1261  pfd.dwFlags |= PFD_SUPPORT_COMPOSITION; // Make OpenTTD compatible with Aero.
1262 
1263  /* Choose a suitable pixel format. */
1264  int format = ChoosePixelFormat(dc, &pfd);
1265  if (format == 0) return "No suitable pixel format found";
1266  if (!SetPixelFormat(dc, format, &pfd)) return "Can't set pixel format";
1267 
1268  return std::nullopt;
1269 }
1270 
1272 static void LoadWGLExtensions()
1273 {
1274  /* Querying the supported WGL extensions and loading the matching
1275  * functions requires a valid context, even for the extensions
1276  * regarding context creation. To get around this, we create
1277  * a dummy window with a dummy context. The extension functions
1278  * remain valid even after this context is destroyed. */
1279  HWND wnd = CreateWindow(L"STATIC", L"dummy", WS_OVERLAPPEDWINDOW, 0, 0, 0, 0, nullptr, nullptr, GetModuleHandle(nullptr), nullptr);
1280  HDC dc = GetDC(wnd);
1281 
1282  /* Set pixel format of the window. */
1283  if (SelectPixelFormat(dc) == std::nullopt) {
1284  /* Create rendering context. */
1285  HGLRC rc = wglCreateContext(dc);
1286  if (rc != nullptr) {
1287  wglMakeCurrent(dc, rc);
1288 
1289 #ifdef __MINGW32__
1290  /* GCC doesn't understand the expected usage of wglGetProcAddress(). */
1291 #pragma GCC diagnostic push
1292 #pragma GCC diagnostic ignored "-Wcast-function-type"
1293 #endif /* __MINGW32__ */
1294 
1295  /* Get list of WGL extensions. */
1296  PFNWGLGETEXTENSIONSSTRINGARBPROC wglGetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC)wglGetProcAddress("wglGetExtensionsStringARB");
1297  if (wglGetExtensionsStringARB != nullptr) {
1298  const char *wgl_exts = wglGetExtensionsStringARB(dc);
1299  /* Bind supported functions. */
1300  if (FindStringInExtensionList(wgl_exts, "WGL_ARB_create_context") != nullptr) {
1301  _wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB");
1302  }
1303  _hasWGLARBCreateContextProfile = FindStringInExtensionList(wgl_exts, "WGL_ARB_create_context_profile") != nullptr;
1304  if (FindStringInExtensionList(wgl_exts, "WGL_EXT_swap_control") != nullptr) {
1305  _wglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC)wglGetProcAddress("wglSwapIntervalEXT");
1306  }
1307  }
1308 
1309 #ifdef __MINGW32__
1310 #pragma GCC diagnostic pop
1311 #endif
1312  wglMakeCurrent(nullptr, nullptr);
1313  wglDeleteContext(rc);
1314  }
1315  }
1316 
1317  ReleaseDC(wnd, dc);
1318  DestroyWindow(wnd);
1319 }
1320 
1321 static FVideoDriver_Win32OpenGL iFVideoDriver_Win32OpenGL;
1322 
1323 std::optional<std::string_view> VideoDriver_Win32OpenGL::Start(const StringList &param)
1324 {
1325  if (BlitterFactory::GetCurrentBlitter()->GetScreenDepth() == 0) return "Only real blitters supported";
1326 
1327  Dimension old_res = _cur_resolution; // Save current screen resolution in case of errors, as MakeWindow invalidates it.
1328 
1329  LoadWGLExtensions();
1330 
1331  this->Initialize();
1332  this->MakeWindow(_fullscreen);
1333 
1334  /* Create and initialize OpenGL context. */
1335  auto err = this->AllocateContext();
1336  if (err) {
1337  this->Stop();
1338  _cur_resolution = old_res;
1339  return err;
1340  }
1341 
1342  this->driver_info = GetName();
1343  this->driver_info += " (";
1344  this->driver_info += OpenGLBackend::Get()->GetDriverName();
1345  this->driver_info += ")";
1346 
1347  this->ClientSizeChanged(this->width, this->height, true);
1348  /* We should have a valid screen buffer now. If not, something went wrong and we should abort. */
1349  if (_screen.dst_ptr == nullptr) {
1350  this->Stop();
1351  _cur_resolution = old_res;
1352  return "Can't get pointer to screen buffer";
1353  }
1354  /* Main loop expects to start with the buffer unmapped. */
1355  this->ReleaseVideoPointer();
1356 
1358 
1359  this->is_game_threaded = !GetDriverParamBool(param, "no_threads") && !GetDriverParamBool(param, "no_thread");
1360 
1361  return std::nullopt;
1362 }
1363 
1364 void VideoDriver_Win32OpenGL::Stop()
1365 {
1366  this->DestroyContext();
1368 }
1369 
1370 void VideoDriver_Win32OpenGL::DestroyContext()
1371 {
1373 
1374  wglMakeCurrent(nullptr, nullptr);
1375  if (this->gl_rc != nullptr) {
1376  wglDeleteContext(this->gl_rc);
1377  this->gl_rc = nullptr;
1378  }
1379  if (this->dc != nullptr) {
1380  ReleaseDC(this->main_wnd, this->dc);
1381  this->dc = nullptr;
1382  }
1383 }
1384 
1385 void VideoDriver_Win32OpenGL::ToggleVsync(bool vsync)
1386 {
1387  if (_wglSwapIntervalEXT != nullptr) {
1388  _wglSwapIntervalEXT(vsync);
1389  } else if (vsync) {
1390  Debug(driver, 0, "OpenGL: Vsync requested, but not supported by driver");
1391  }
1392 }
1393 
1394 std::optional<std::string_view> VideoDriver_Win32OpenGL::AllocateContext()
1395 {
1396  this->dc = GetDC(this->main_wnd);
1397 
1398  auto err = SelectPixelFormat(this->dc);
1399  if (err) return err;
1400 
1401  HGLRC rc = nullptr;
1402 
1403  /* Create OpenGL device context. Try to get an 3.2+ context if possible. */
1404  if (_wglCreateContextAttribsARB != nullptr) {
1405  /* Try for OpenGL 4.5 first. */
1406  int attribs[] = {
1407  WGL_CONTEXT_MAJOR_VERSION_ARB, 4,
1408  WGL_CONTEXT_MINOR_VERSION_ARB, 5,
1409  WGL_CONTEXT_FLAGS_ARB, _debug_driver_level >= 8 ? WGL_CONTEXT_DEBUG_BIT_ARB : 0,
1410  _hasWGLARBCreateContextProfile ? WGL_CONTEXT_PROFILE_MASK_ARB : 0, WGL_CONTEXT_CORE_PROFILE_BIT_ARB, // Terminate list if WGL_ARB_create_context_profile isn't supported.
1411  0
1412  };
1413  rc = _wglCreateContextAttribsARB(this->dc, nullptr, attribs);
1414 
1415  if (rc == nullptr) {
1416  /* Try again for a 3.2 context. */
1417  attribs[1] = 3;
1418  attribs[3] = 2;
1419  rc = _wglCreateContextAttribsARB(this->dc, nullptr, attribs);
1420  }
1421  }
1422 
1423  if (rc == nullptr) {
1424  /* Old OpenGL or old driver, let's hope for the best. */
1425  rc = wglCreateContext(this->dc);
1426  if (rc == nullptr) return "Can't create OpenGL context";
1427  }
1428  if (!wglMakeCurrent(this->dc, rc)) return "Can't active GL context";
1429 
1430  this->ToggleVsync(_video_vsync);
1431 
1432  this->gl_rc = rc;
1433  return OpenGLBackend::Create(&GetOGLProcAddressCallback, this->GetScreenSize());
1434 }
1435 
1436 bool VideoDriver_Win32OpenGL::ToggleFullscreen(bool full_screen)
1437 {
1438  if (_screen.dst_ptr != nullptr) this->ReleaseVideoPointer();
1439  this->DestroyContext();
1440  bool res = this->VideoDriver_Win32Base::ToggleFullscreen(full_screen);
1441  res &= this->AllocateContext() == std::nullopt;
1442  this->ClientSizeChanged(this->width, this->height, true);
1443  return res;
1444 }
1445 
1446 bool VideoDriver_Win32OpenGL::AfterBlitterChange()
1447 {
1448  assert(BlitterFactory::GetCurrentBlitter()->GetScreenDepth() != 0);
1449  this->ClientSizeChanged(this->width, this->height, true);
1450  return true;
1451 }
1452 
1453 void VideoDriver_Win32OpenGL::PopulateSystemSprites()
1454 {
1455  OpenGLBackend::Get()->PopulateCursorCache();
1456 }
1457 
1458 void VideoDriver_Win32OpenGL::ClearSystemSprites()
1459 {
1461 }
1462 
1463 bool VideoDriver_Win32OpenGL::AllocateBackingStore(int w, int h, bool force)
1464 {
1465  if (!force && w == _screen.width && h == _screen.height) return false;
1466 
1467  this->width = w = std::max(w, 64);
1468  this->height = h = std::max(h, 64);
1469 
1470  if (this->gl_rc == nullptr) return false;
1471 
1472  if (_screen.dst_ptr != nullptr) this->ReleaseVideoPointer();
1473 
1474  this->dirty_rect = {};
1475  bool res = OpenGLBackend::Get()->Resize(w, h, force);
1476  SwapBuffers(this->dc);
1477  _screen.dst_ptr = this->GetVideoPointer();
1478 
1479  return res;
1480 }
1481 
1482 void *VideoDriver_Win32OpenGL::GetVideoPointer()
1483 {
1484  if (BlitterFactory::GetCurrentBlitter()->NeedsAnimationBuffer()) {
1485  this->anim_buffer = OpenGLBackend::Get()->GetAnimBuffer();
1486  }
1487  return OpenGLBackend::Get()->GetVideoBuffer();
1488 }
1489 
1490 void VideoDriver_Win32OpenGL::ReleaseVideoPointer()
1491 {
1492  if (this->anim_buffer != nullptr) OpenGLBackend::Get()->ReleaseAnimBuffer(this->dirty_rect);
1493  OpenGLBackend::Get()->ReleaseVideoBuffer(this->dirty_rect);
1494  this->dirty_rect = {};
1495  _screen.dst_ptr = nullptr;
1496  this->anim_buffer = nullptr;
1497 }
1498 
1499 void VideoDriver_Win32OpenGL::Paint()
1500 {
1501  PerformanceMeasurer framerate(PFE_VIDEO);
1502 
1503  if (_local_palette.count_dirty != 0) {
1505 
1506  /* Always push a changed palette to OpenGL. */
1509  blitter->PaletteAnimate(_local_palette);
1510  }
1511 
1513  }
1514 
1517 
1518  SwapBuffers(this->dc);
1519 }
1520 
1521 #endif /* WITH_OPENGL */
#define AS(ap_name, size_x, size_y, min_year, max_year, catchment, noise, maint_cost, ttdpatch_type, class_id, name, preview)
AirportSpec definition for airports with at least one depot.
constexpr debug_inline bool HasBit(const T x, const uint8_t y)
Checks if a bit in a value is set.
constexpr static debug_inline uint GB(const T x, const uint8_t s, const uint8_t n)
Fetch n bits from x, started at bit s.
static Blitter * GetCurrentBlitter()
Get the current active blitter (always set by calling SelectBlitter).
Definition: factory.hpp:138
How all blitters should look like.
Definition: base.hpp:29
virtual uint8_t GetScreenDepth()=0
Get the screen depth this blitter works for.
virtual Blitter::PaletteAnimation UsePaletteAnimation()=0
Check if the blitter uses palette animation at all.
@ PALETTE_ANIMATION_NONE
No palette animation.
Definition: base.hpp:51
@ PALETTE_ANIMATION_VIDEO_BACKEND
Palette animation should be done by video backend (8bpp only!)
Definition: base.hpp:52
@ PALETTE_ANIMATION_BLITTER
The blitter takes care of the palette animation.
Definition: base.hpp:53
virtual void PaletteAnimate(const Palette &palette)=0
Called when the 8bpp palette is changed; you should redraw all pixels on the screen that are equal to...
virtual void PostResize()
Post resize event.
Definition: base.hpp:205
The factory for Windows' video driver.
Definition: win32_v.h:110
Function GetFunction(const std::string &symbol_name)
Get a function from a loaded library.
uint current_x
Current horizontal size (after resizing).
Definition: widget_type.h:243
int pos_y
Vertical position of top-left corner of the widget in the window.
Definition: widget_type.h:249
int pos_x
Horizontal position of top-left corner of the widget in the window.
Definition: widget_type.h:248
uint current_y
Current vertical size (after resizing).
Definition: widget_type.h:244
void Paint()
Render video buffer to the screen.
Definition: opengl.cpp:1039
uint8_t * GetAnimBuffer()
Get a pointer to the memory for the separate animation buffer.
Definition: opengl.cpp:1170
void * GetVideoBuffer()
Get a pointer to the memory for the video driver to draw to.
Definition: opengl.cpp:1148
bool Resize(int w, int h, bool force=false)
Change the size of the drawing window and allocate matching resources.
Definition: opengl.cpp:913
static std::optional< std::string_view > Create(GetOGLProcAddressProc get_proc, const Dimension &screen_res)
Create and initialize the singleton back-end class.
Definition: opengl.cpp:467
void UpdatePalette(const Colour *pal, uint first, uint length)
Update the stored palette.
Definition: opengl.cpp:1025
void ReleaseAnimBuffer(const Rect &update_rect)
Update animation buffer texture after the animation buffer was filled.
Definition: opengl.cpp:1231
void ClearCursorCache()
Queue a request for cursor cache clear.
Definition: opengl.cpp:1135
void DrawMouseCursor()
Draw mouse cursor on screen.
Definition: opengl.cpp:1071
void ReleaseVideoBuffer(const Rect &update_rect)
Update video buffer texture after the video buffer was filled.
Definition: opengl.cpp:1193
static void Destroy()
Free resources and destroy singleton back-end class.
Definition: opengl.cpp:480
static OpenGLBackend * Get()
Get singleton instance of this class.
Definition: opengl.h:82
RAII class for measuring simple elements of performance.
Base class for Windows video drivers.
Definition: win32_v.h:19
int height
Height in pixels of our display surface.
Definition: win32_v.h:45
bool has_focus
Does our window have system focus?
Definition: win32_v.h:42
void EditBoxLostFocus() override
An edit box lost the input focus.
Definition: win32_v.cpp:930
void CheckPaletteAnim() override
Process any pending palette animation.
Definition: win32_v.cpp:842
void Stop() override
Stop this driver.
Definition: win32_v.cpp:829
int height_org
Original monitor resolution height, before we changed it.
Definition: win32_v.h:47
HWND main_wnd
Handle to system window.
Definition: win32_v.h:40
bool fullscreen
Whether to use (true) fullscreen mode.
Definition: win32_v.h:41
int width_org
Original monitor resolution width, before we changed it.
Definition: win32_v.h:46
bool MakeWindow(bool full_screen, bool resize=true)
Instantiate a new window.
Definition: win32_v.cpp:138
bool buffer_locked
Video buffer was locked by the main thread.
Definition: win32_v.h:49
void MakeDirty(int left, int top, int width, int height) override
Mark a particular area dirty.
Definition: win32_v.cpp:836
bool PollEvent() override
Process a single system event.
Definition: win32_v.cpp:873
virtual void PaletteChanged(HWND hWnd)=0
Palette of the window has changed.
bool LockVideoBuffer() override
Make sure the video buffer is ready for drawing.
Definition: win32_v.cpp:1007
virtual void * GetVideoPointer()=0
Get a pointer to the video buffer.
std::vector< int > GetListOfMonitorRefreshRates() override
Get a list of refresh rates of each available monitor.
Definition: win32_v.cpp:954
virtual bool AllocateBackingStore(int w, int h, bool force=false)=0
(Re-)create the backing store.
int width
Width in pixels of our display surface.
Definition: win32_v.h:44
void InputLoop() override
Handle input logic, is CTRL pressed, should we fast-forward, etc.
Definition: win32_v.cpp:848
virtual uint8_t GetFullscreenBpp()
Get screen depth to use for fullscreen mode.
Definition: win32_v.cpp:126
Dimension GetScreenSize() const override
Get the resolution of the main screen.
Definition: win32_v.cpp:961
virtual void ReleaseVideoPointer()
Hand video buffer back to the painting backend.
Definition: win32_v.h:70
void UnlockVideoBuffer() override
Unlock a previously locked video buffer.
Definition: win32_v.cpp:1018
void MainLoop() override
Perform the actual drawing.
Definition: win32_v.cpp:886
Rect dirty_rect
Region of the screen that needs redrawing.
Definition: win32_v.h:43
float GetDPIScale() override
Get DPI scaling factor of the screen OTTD is displayed on.
Definition: win32_v.cpp:966
bool ToggleFullscreen(bool fullscreen) override
Change the full screen setting.
Definition: win32_v.cpp:922
bool ChangeResolution(int w, int h) override
Change the resolution of the window.
Definition: win32_v.cpp:912
The GDI video driver for windows.
Definition: win32_v.h:78
void * buffer_bits
Internal rendering buffer.
Definition: win32_v.h:93
HBITMAP dib_sect
System bitmap object referencing our rendering buffer.
Definition: win32_v.h:91
void PaletteChanged(HWND hWnd) override
Palette of the window has changed.
Definition: win32_v.cpp:1137
std::optional< std::string_view > Start(const StringList &param) override
Start this driver.
Definition: win32_v.cpp:1033
void * GetVideoPointer() override
Get a pointer to the video buffer.
Definition: win32_v.h:96
HPALETTE gdi_palette
Palette object for 8bpp blitter.
Definition: win32_v.h:92
bool AllocateBackingStore(int w, int h, bool force=false) override
(Re-)create the backing store.
Definition: win32_v.cpp:1058
void Paint() override
Paint the window.
Definition: win32_v.cpp:1148
bool AfterBlitterChange() override
Callback invoked after the blitter was changed.
Definition: win32_v.cpp:1096
void Stop() override
Stop this driver.
Definition: win32_v.cpp:1050
bool fast_forward_key_pressed
The fast-forward key is being pressed.
void Tick()
Give the video-driver a tick.
void SleepTillNextTick()
Sleep till the next tick is about to happen.
void StartGameThread()
Start the loop for game-tick.
static std::string GetCaption()
Get the caption to use for the game's title bar.
void StopGameThread()
Stop the loop for the game-tick.
void UpdateAutoResolution()
Apply resolution auto-detection and clamp to sensible defaults.
static VideoDriver * GetInstance()
Get the currently active instance of the video driver.
#define Debug(category, level, format_string,...)
Ouptut a line of debugging information.
Definition: debug.h:37
std::vector< Dimension > _resolutions
List of resolutions.
Definition: driver.cpp:25
Dimension _cur_resolution
The current resolution.
Definition: driver.cpp:26
bool GetDriverParamBool(const StringList &parm, const char *name)
Get a boolean parameter the list of parameters.
Definition: driver.cpp:64
fluid_settings_t * settings
FluidSynth settings handle.
Definition: fluidsynth.cpp:21
@ PFE_VIDEO
Speed of painting drawn video buffer.
Rect BoundingRect(const Rect &r1, const Rect &r2)
Compute the bounding rectangle around two rectangles.
bool IsEmptyRect(const Rect &r)
Check if a rectangle is empty.
bool _shift_pressed
Is Shift pressed?
Definition: gfx.cpp:39
bool _left_button_down
Is left mouse button pressed?
Definition: gfx.cpp:41
bool _ctrl_pressed
Is Ctrl pressed?
Definition: gfx.cpp:38
uint8_t _dirkeys
1 = left, 2 = up, 4 = right, 8 = down
Definition: gfx.cpp:34
bool _left_button_clicked
Is left mouse button clicked?
Definition: gfx.cpp:42
bool _right_button_clicked
Is right mouse button clicked?
Definition: gfx.cpp:44
bool _right_button_down
Is right mouse button pressed?
Definition: gfx.cpp:43
bool AdjustGUIZoom(bool automatic)
Resolve GUI zoom level and adjust GUI to new zoom, if auto-suggestion is requested.
Definition: gfx.cpp:1793
void HandleCtrlChanged()
State of CONTROL key has changed.
Definition: window.cpp:2618
void UpdateWindows()
Update the continuously changing contents of the windows, such as the viewports.
Definition: window.cpp:3048
void GameSizeChanged()
Size of the application screen changed.
Definition: main_gui.cpp:589
void HandleMouseEvents()
Handle a mouse event from the video driver.
Definition: window.cpp:2877
void HandleKeypress(uint keycode, char32_t key)
Handle keyboard input.
Definition: window.cpp:2562
void HandleTextInput(const char *str, bool marked=false, const char *caret=nullptr, const char *insert_location=nullptr, const char *replacement_end=nullptr)
Handle text input.
Definition: window.cpp:2648
@ S8BPP_HARDWARE
Full 8bpp support by OS and hardware.
Definition: gfx_type.h:338
@ WKC_BACKSLASH
\ Backslash
Definition: gfx_type.h:100
@ WKC_MINUS
Definition: gfx_type.h:105
@ WKC_COMMA
, Comma
Definition: gfx_type.h:103
@ WKC_PERIOD
. Period
Definition: gfx_type.h:104
@ WKC_EQUALS
= Equals
Definition: gfx_type.h:98
@ WKC_SLASH
/ Forward slash
Definition: gfx_type.h:96
@ WKC_SINGLEQUOTE
' Single quote
Definition: gfx_type.h:102
@ WKC_R_BRACKET
] Right square bracket
Definition: gfx_type.h:101
@ WKC_L_BRACKET
[ Left square bracket
Definition: gfx_type.h:99
@ WKC_SEMICOLON
; Semicolon
Definition: gfx_type.h:97
void MarkWholeScreenDirty()
This function mark the whole screen as dirty.
Definition: gfx.cpp:1529
constexpr bool IsInsideBS(const T x, const size_t base, const size_t size)
Checks if a value is between a window started at some base point.
Definition: math_func.hpp:252
constexpr T Align(const T x, uint n)
Return the smallest multiple of n equal or greater than x.
Definition: math_func.hpp:37
OpenGL video driver support.
const char * FindStringInExtensionList(const char *string, const char *substring)
Find a substring in a string made of space delimited elements.
Definition: opengl.cpp:144
void GetKeyboardLayout()
Retrieve keyboard layout from language string or (if set) config file.
Definition: osk_gui.cpp:349
bool CopyPalette(Palette &local_palette, bool force_copy)
Copy the current palette if the palette was updated.
Definition: palette.cpp:152
static OGLProc GetOGLProcAddressCallback(const char *proc)
Platform-specific callback to get an OpenGL funtion pointer.
char32_t Utf16DecodeSurrogate(uint lead, uint trail)
Convert an UTF-16 surrogate pair to the corresponding Unicode character.
Definition: string_func.h:192
bool Utf16IsLeadSurrogate(uint c)
Is the given character a lead surrogate code point?
Definition: string_func.h:171
bool Utf16IsTrailSurrogate(uint c)
Is the given character a lead surrogate code point?
Definition: string_func.h:181
std::vector< std::string > StringList
Type for a list of strings.
Definition: string_type.h:60
bool UpdateCursorPosition(int x, int y)
Update cursor position on mouse movement.
Definition: gfx.cpp:1728
bool fix_at
mouse is moving, but cursor is not (used for scrolling)
Definition: gfx_type.h:128
Point pos
logical mouse position
Definition: gfx_type.h:125
bool in_window
mouse inside this window, determines drawing logic
Definition: gfx_type.h:147
int wheel
mouse wheel movement
Definition: gfx_type.h:127
Dimensions (a width and height) of a rectangle in 2D.
Information about the currently used palette.
Definition: gfx_type.h:328
int first_dirty
The first dirty element.
Definition: gfx_type.h:330
int count_dirty
The number of dirty elements.
Definition: gfx_type.h:331
Colour palette[256]
Current palette. Entry 0 has to be always fully transparent!
Definition: gfx_type.h:329
Coordinates of a point in 2D.
Specification of a rectangle with absolute coordinates of all edges.
WindowClass window_class
Window class.
Definition: window_gui.h:301
virtual Point GetCaretPosition() const
Get the current caret position if an edit box has the focus.
Definition: window.cpp:378
int left
x position of left edge of the window
Definition: window_gui.h:309
const NWidgetCore * nested_focus
Currently focused nested widget, or nullptr if no nested widget has focus.
Definition: window_gui.h:319
int top
y position of top edge of the window
Definition: window_gui.h:310
int height
Height of the window (number of pixels down in y direction)
Definition: window_gui.h:312
int width
width of the window (number of pixels to the right in x direction)
Definition: window_gui.h:311
bool _video_vsync
Whether we should use vsync (only if active video driver supports HW acceleration).
std::wstring OTTD2FS(const std::string &name)
Convert from OpenTTD's encoding to a wide string.
Definition: win32.cpp:354
std::string FS2OTTD(const std::wstring &name)
Convert to OpenTTD's encoding from a wide string.
Definition: win32.cpp:337
char * convert_from_fs(const std::wstring_view src, std::span< char > dst_buf)
Convert to OpenTTD's encoding from that of the environment in UNICODE.
Definition: win32.cpp:372
static Palette _local_palette
Current palette to use for drawing.
Definition: win32_v.cpp:50
static LRESULT HandleCharMsg(uint keycode, char32_t charcode)
Forward key presses to the window system.
Definition: win32_v.cpp:242
static bool DrawIMECompositionString()
Should we draw the composition string ourself, i.e is this a normal IME?
Definition: win32_v.cpp:269
static LRESULT HandleIMEComposition(HWND hwnd, WPARAM wParam, LPARAM lParam)
Handle WM_IME_COMPOSITION messages.
Definition: win32_v.cpp:331
static void SetCandidatePos(HWND hwnd)
Set the position of the candidate window.
Definition: win32_v.cpp:297
static void CancelIMEComposition(HWND hwnd)
Clear the current composition string.
Definition: win32_v.cpp:391
static void SetCompositionPos(HWND hwnd)
Set position of the composition window to the caret position.
Definition: win32_v.cpp:275
Base of the Windows video driver.
void ReInitAllWindows(bool zoom_changed)
Re-initialize all windows.
Definition: window.cpp:3327
bool EditBoxInGlobalFocus()
Check if an edit box is in global focus.
Definition: window.cpp:448
void InvalidateWindowClassesData(WindowClass cls, int data, bool gui_scope)
Mark window data of all windows of a given class as invalid (in need of re-computing) Note that by de...
Definition: window.cpp:3228
@ WC_CONSOLE
Console; Window numbers:
Definition: window_type.h:649
@ WC_GAME_OPTIONS
Game options window; Window numbers:
Definition: window_type.h:624