win32_v.cpp

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00001 /* $Id$ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #include "../stdafx.h"
00013 #include "../openttd.h"
00014 #include "../gfx_func.h"
00015 #include "../os/windows/win32.h"
00016 #include "../rev.h"
00017 #include "../blitter/factory.hpp"
00018 #include "../network/network.h"
00019 #include "../core/math_func.hpp"
00020 #include "../core/random_func.hpp"
00021 #include "../texteff.hpp"
00022 #include "../thread/thread.h"
00023 #include "../progress.h"
00024 #include "win32_v.h"
00025 #include <windows.h>
00026 
00027 static struct {
00028   HWND main_wnd;
00029   HBITMAP dib_sect;
00030   void *buffer_bits;
00031   HPALETTE gdi_palette;
00032   RECT update_rect;
00033   int width;
00034   int height;
00035   int width_org;
00036   int height_org;
00037   bool fullscreen;
00038   bool has_focus;
00039   bool running;
00040 } _wnd;
00041 
00042 bool _force_full_redraw;
00043 bool _window_maximize;
00044 uint _display_hz;
00045 uint _fullscreen_bpp;
00046 static Dimension _bck_resolution;
00047 #if !defined(UNICODE)
00048 uint _codepage;
00049 #endif
00050 
00052 static bool _draw_threaded;
00054 static ThreadObject *_draw_thread = NULL;
00056 static ThreadMutex *_draw_mutex = NULL;
00058 static volatile bool _draw_continue;
00060 static Palette _local_palette;
00061 
00062 static void MakePalette()
00063 {
00064   LOGPALETTE *pal = (LOGPALETTE*)alloca(sizeof(LOGPALETTE) + (256 - 1) * sizeof(PALETTEENTRY));
00065 
00066   pal->palVersion = 0x300;
00067   pal->palNumEntries = 256;
00068 
00069   for (uint i = 0; i != 256; i++) {
00070     pal->palPalEntry[i].peRed   = _cur_palette.palette[i].r;
00071     pal->palPalEntry[i].peGreen = _cur_palette.palette[i].g;
00072     pal->palPalEntry[i].peBlue  = _cur_palette.palette[i].b;
00073     pal->palPalEntry[i].peFlags = 0;
00074 
00075   }
00076   _wnd.gdi_palette = CreatePalette(pal);
00077   if (_wnd.gdi_palette == NULL) usererror("CreatePalette failed!\n");
00078 
00079   _cur_palette.first_dirty = 0;
00080   _cur_palette.count_dirty = 256;
00081   _local_palette = _cur_palette;
00082 }
00083 
00084 static void UpdatePalette(HDC dc, uint start, uint count)
00085 {
00086   RGBQUAD rgb[256];
00087   uint i;
00088 
00089   for (i = 0; i != count; i++) {
00090     rgb[i].rgbRed   = _local_palette.palette[start + i].r;
00091     rgb[i].rgbGreen = _local_palette.palette[start + i].g;
00092     rgb[i].rgbBlue  = _local_palette.palette[start + i].b;
00093     rgb[i].rgbReserved = 0;
00094   }
00095 
00096   SetDIBColorTable(dc, start, count, rgb);
00097 }
00098 
00099 bool VideoDriver_Win32::ClaimMousePointer()
00100 {
00101   MyShowCursor(false, true);
00102   return true;
00103 }
00104 
00105 struct VkMapping {
00106   byte vk_from;
00107   byte vk_count;
00108   byte map_to;
00109 };
00110 
00111 #define AS(x, z) {x, 0, z}
00112 #define AM(x, y, z, w) {x, y - x, z}
00113 
00114 static const VkMapping _vk_mapping[] = {
00115   /* Pageup stuff + up/down */
00116   AM(VK_PRIOR, VK_DOWN, WKC_PAGEUP, WKC_DOWN),
00117   /* Map letters & digits */
00118   AM('A', 'Z', 'A', 'Z'),
00119   AM('0', '9', '0', '9'),
00120 
00121   AS(VK_ESCAPE,   WKC_ESC),
00122   AS(VK_PAUSE,    WKC_PAUSE),
00123   AS(VK_BACK,     WKC_BACKSPACE),
00124   AM(VK_INSERT,   VK_DELETE, WKC_INSERT, WKC_DELETE),
00125 
00126   AS(VK_SPACE,    WKC_SPACE),
00127   AS(VK_RETURN,   WKC_RETURN),
00128   AS(VK_TAB,      WKC_TAB),
00129 
00130   /* Function keys */
00131   AM(VK_F1, VK_F12, WKC_F1, WKC_F12),
00132 
00133   /* Numeric part */
00134   AM(VK_NUMPAD0, VK_NUMPAD9, '0', '9'),
00135   AS(VK_DIVIDE,   WKC_NUM_DIV),
00136   AS(VK_MULTIPLY, WKC_NUM_MUL),
00137   AS(VK_SUBTRACT, WKC_NUM_MINUS),
00138   AS(VK_ADD,      WKC_NUM_PLUS),
00139   AS(VK_DECIMAL,  WKC_NUM_DECIMAL),
00140 
00141   /* Other non-letter keys */
00142   AS(0xBF,  WKC_SLASH),
00143   AS(0xBA,  WKC_SEMICOLON),
00144   AS(0xBB,  WKC_EQUALS),
00145   AS(0xDB,  WKC_L_BRACKET),
00146   AS(0xDC,  WKC_BACKSLASH),
00147   AS(0xDD,  WKC_R_BRACKET),
00148 
00149   AS(0xDE,  WKC_SINGLEQUOTE),
00150   AS(0xBC,  WKC_COMMA),
00151   AS(0xBD,  WKC_MINUS),
00152   AS(0xBE,  WKC_PERIOD)
00153 };
00154 
00155 static uint MapWindowsKey(uint sym)
00156 {
00157   const VkMapping *map;
00158   uint key = 0;
00159 
00160   for (map = _vk_mapping; map != endof(_vk_mapping); ++map) {
00161     if ((uint)(sym - map->vk_from) <= map->vk_count) {
00162       key = sym - map->vk_from + map->map_to;
00163       break;
00164     }
00165   }
00166 
00167   if (GetAsyncKeyState(VK_SHIFT)   < 0) key |= WKC_SHIFT;
00168   if (GetAsyncKeyState(VK_CONTROL) < 0) key |= WKC_CTRL;
00169   if (GetAsyncKeyState(VK_MENU)    < 0) key |= WKC_ALT;
00170   return key;
00171 }
00172 
00173 static bool AllocateDibSection(int w, int h, bool force = false);
00174 
00175 static void ClientSizeChanged(int w, int h)
00176 {
00177   /* allocate new dib section of the new size */
00178   if (AllocateDibSection(w, h)) {
00179     /* mark all palette colours dirty */
00180     _cur_palette.first_dirty = 0;
00181     _cur_palette.count_dirty = 256;
00182     _local_palette = _cur_palette;
00183 
00184     BlitterFactoryBase::GetCurrentBlitter()->PostResize();
00185 
00186     GameSizeChanged();
00187 
00188     /* redraw screen */
00189     if (_wnd.running) {
00190       _screen.dst_ptr = _wnd.buffer_bits;
00191       UpdateWindows();
00192     }
00193   }
00194 }
00195 
00196 #ifdef _DEBUG
00197 /* Keep this function here..
00198  * It allows you to redraw the screen from within the MSVC debugger */
00199 int RedrawScreenDebug()
00200 {
00201   HDC dc, dc2;
00202   static int _fooctr;
00203   HBITMAP old_bmp;
00204   HPALETTE old_palette;
00205 
00206   _screen.dst_ptr = _wnd.buffer_bits;
00207   UpdateWindows();
00208 
00209   dc = GetDC(_wnd.main_wnd);
00210   dc2 = CreateCompatibleDC(dc);
00211 
00212   old_bmp = (HBITMAP)SelectObject(dc2, _wnd.dib_sect);
00213   old_palette = SelectPalette(dc, _wnd.gdi_palette, FALSE);
00214   BitBlt(dc, 0, 0, _wnd.width, _wnd.height, dc2, 0, 0, SRCCOPY);
00215   SelectPalette(dc, old_palette, TRUE);
00216   SelectObject(dc2, old_bmp);
00217   DeleteDC(dc2);
00218   ReleaseDC(_wnd.main_wnd, dc);
00219 
00220   return _fooctr++;
00221 }
00222 #endif
00223 
00224 /* Windows 95 will not have a WM_MOUSELEAVE message, so define it if needed */
00225 #if !defined(WM_MOUSELEAVE)
00226 #define WM_MOUSELEAVE 0x02A3
00227 #endif
00228 #define TID_POLLMOUSE 1
00229 #define MOUSE_POLL_DELAY 75
00230 
00231 static void CALLBACK TrackMouseTimerProc(HWND hwnd, UINT msg, UINT event, DWORD time)
00232 {
00233   RECT rc;
00234   POINT pt;
00235 
00236   /* Get the rectangle of our window and translate it to screen coordinates.
00237    * Compare this with the current screen coordinates of the mouse and if it
00238    * falls outside of the area or our window we have left the window. */
00239   GetClientRect(hwnd, &rc);
00240   MapWindowPoints(hwnd, HWND_DESKTOP, (LPPOINT)(LPRECT)&rc, 2);
00241   GetCursorPos(&pt);
00242 
00243   if (!PtInRect(&rc, pt) || (WindowFromPoint(pt) != hwnd)) {
00244     KillTimer(hwnd, event);
00245     PostMessage(hwnd, WM_MOUSELEAVE, 0, 0L);
00246   }
00247 }
00248 
00254 bool VideoDriver_Win32::MakeWindow(bool full_screen)
00255 {
00256   _fullscreen = full_screen;
00257 
00258   /* recreate window? */
00259   if ((full_screen || _wnd.fullscreen) && _wnd.main_wnd) {
00260     DestroyWindow(_wnd.main_wnd);
00261     _wnd.main_wnd = 0;
00262   }
00263 
00264 #if defined(WINCE)
00265   /* WinCE is always fullscreen */
00266 #else
00267   if (full_screen) {
00268     DEVMODE settings;
00269 
00270     /* Make sure we are always at least the screen-depth of the blitter */
00271     if (_fullscreen_bpp < BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth()) _fullscreen_bpp = BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth();
00272 
00273     memset(&settings, 0, sizeof(settings));
00274     settings.dmSize = sizeof(settings);
00275     settings.dmFields =
00276       (_fullscreen_bpp != 0 ? DM_BITSPERPEL : 0) |
00277       DM_PELSWIDTH |
00278       DM_PELSHEIGHT |
00279       (_display_hz != 0 ? DM_DISPLAYFREQUENCY : 0);
00280     settings.dmBitsPerPel = _fullscreen_bpp;
00281     settings.dmPelsWidth  = _wnd.width_org;
00282     settings.dmPelsHeight = _wnd.height_org;
00283     settings.dmDisplayFrequency = _display_hz;
00284 
00285     /* Test fullscreen with current resolution, if it fails use desktop resolution. */
00286     if (ChangeDisplaySettings(&settings, CDS_FULLSCREEN | CDS_TEST) != DISP_CHANGE_SUCCESSFUL) {
00287       RECT r;
00288       GetWindowRect(GetDesktopWindow(), &r);
00289       return this->ChangeResolution(r.right - r.left, r.bottom - r.top);
00290     }
00291 
00292     if (ChangeDisplaySettings(&settings, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL) {
00293       this->MakeWindow(false);  // don't care about the result
00294       return false;  // the request failed
00295     }
00296   } else if (_wnd.fullscreen) {
00297     /* restore display? */
00298     ChangeDisplaySettings(NULL, 0);
00299     /* restore the resolution */
00300     _wnd.width = _bck_resolution.width;
00301     _wnd.height = _bck_resolution.height;
00302   }
00303 #endif
00304 
00305   {
00306     RECT r;
00307     DWORD style, showstyle;
00308     int w, h;
00309 
00310     showstyle = SW_SHOWNORMAL;
00311     _wnd.fullscreen = full_screen;
00312     if (_wnd.fullscreen) {
00313       style = WS_POPUP;
00314       SetRect(&r, 0, 0, _wnd.width_org, _wnd.height_org);
00315     } else {
00316       style = WS_OVERLAPPEDWINDOW;
00317       /* On window creation, check if we were in maximize mode before */
00318       if (_window_maximize) showstyle = SW_SHOWMAXIMIZED;
00319       SetRect(&r, 0, 0, _wnd.width, _wnd.height);
00320     }
00321 
00322 #if !defined(WINCE)
00323     AdjustWindowRect(&r, style, FALSE);
00324 #endif
00325     w = r.right - r.left;
00326     h = r.bottom - r.top;
00327 
00328     if (_wnd.main_wnd != NULL) {
00329       if (!_window_maximize) SetWindowPos(_wnd.main_wnd, 0, 0, 0, w, h, SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOZORDER | SWP_NOMOVE);
00330     } else {
00331       TCHAR Windowtitle[50];
00332       int x = (GetSystemMetrics(SM_CXSCREEN) - w) / 2;
00333       int y = (GetSystemMetrics(SM_CYSCREEN) - h) / 2;
00334 
00335       _sntprintf(Windowtitle, lengthof(Windowtitle), _T("OpenTTD %s"), MB_TO_WIDE(_openttd_revision));
00336 
00337       _wnd.main_wnd = CreateWindow(_T("OTTD"), Windowtitle, style, x, y, w, h, 0, 0, GetModuleHandle(NULL), 0);
00338       if (_wnd.main_wnd == NULL) usererror("CreateWindow failed");
00339       ShowWindow(_wnd.main_wnd, showstyle);
00340     }
00341   }
00342 
00343   BlitterFactoryBase::GetCurrentBlitter()->PostResize();
00344 
00345   GameSizeChanged(); // invalidate all windows, force redraw
00346   return true; // the request succedded
00347 }
00348 
00350 static void PaintWindow(HDC dc)
00351 {
00352   HDC dc2 = CreateCompatibleDC(dc);
00353   HBITMAP old_bmp = (HBITMAP)SelectObject(dc2, _wnd.dib_sect);
00354   HPALETTE old_palette = SelectPalette(dc, _wnd.gdi_palette, FALSE);
00355 
00356   if (_cur_palette.count_dirty != 0) {
00357     Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00358 
00359     switch (blitter->UsePaletteAnimation()) {
00360       case Blitter::PALETTE_ANIMATION_VIDEO_BACKEND:
00361         UpdatePalette(dc2, _local_palette.first_dirty, _local_palette.count_dirty);
00362         break;
00363 
00364       case Blitter::PALETTE_ANIMATION_BLITTER:
00365         blitter->PaletteAnimate(_local_palette);
00366         break;
00367 
00368       case Blitter::PALETTE_ANIMATION_NONE:
00369         break;
00370 
00371       default:
00372         NOT_REACHED();
00373     }
00374     _cur_palette.count_dirty = 0;
00375   }
00376 
00377   BitBlt(dc, 0, 0, _wnd.width, _wnd.height, dc2, 0, 0, SRCCOPY);
00378   SelectPalette(dc, old_palette, TRUE);
00379   SelectObject(dc2, old_bmp);
00380   DeleteDC(dc2);
00381 }
00382 
00383 static void PaintWindowThread(void *)
00384 {
00385   /* First tell the main thread we're started */
00386   _draw_mutex->BeginCritical();
00387   _draw_mutex->SendSignal();
00388 
00389   /* Do our best to make sure the main thread is the one that
00390    * gets the signal, and not our wait below. */
00391   Sleep(0);
00392 
00393   /* Now wait for the first thing to draw! */
00394   _draw_mutex->WaitForSignal();
00395 
00396   while (_draw_continue) {
00397     /* Convert update region from logical to device coordinates. */
00398     POINT pt = {0, 0};
00399     ClientToScreen(_wnd.main_wnd, &pt);
00400     OffsetRect(&_wnd.update_rect, pt.x, pt.y);
00401 
00402     /* Create a device context that is clipped to the region we need to draw.
00403      * GetDCEx 'consumes' the update region, so we may not destroy it ourself. */
00404     HRGN rgn = CreateRectRgnIndirect(&_wnd.update_rect);
00405     HDC dc = GetDCEx(_wnd.main_wnd, rgn, DCX_CLIPSIBLINGS | DCX_CLIPCHILDREN | DCX_INTERSECTRGN);
00406 
00407     PaintWindow(dc);
00408 
00409     /* Clear update rect. */
00410     SetRectEmpty(&_wnd.update_rect);
00411     ReleaseDC(_wnd.main_wnd, dc);
00412 
00413     /* Flush GDI buffer to ensure drawing here doesn't conflict with any GDI usage in the main WndProc. */
00414     GdiFlush();
00415 
00416     _draw_mutex->WaitForSignal();
00417   }
00418 
00419   _draw_mutex->EndCritical();
00420   _draw_thread->Exit();
00421 }
00422 
00423 static LRESULT CALLBACK WndProcGdi(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
00424 {
00425   static uint32 keycode = 0;
00426   static bool console = false;
00427   static bool in_sizemove = false;
00428 
00429   switch (msg) {
00430     case WM_CREATE:
00431       SetTimer(hwnd, TID_POLLMOUSE, MOUSE_POLL_DELAY, (TIMERPROC)TrackMouseTimerProc);
00432       break;
00433 
00434     case WM_ENTERSIZEMOVE:
00435       in_sizemove = true;
00436       break;
00437 
00438     case WM_EXITSIZEMOVE:
00439       in_sizemove = false;
00440       break;
00441 
00442     case WM_PAINT:
00443       if (!in_sizemove && _draw_mutex != NULL && !HasModalProgress()) {
00444         /* Get the union of the old update rect and the new update rect. */
00445         RECT r;
00446         GetUpdateRect(hwnd, &r, FALSE);
00447         UnionRect(&_wnd.update_rect, &_wnd.update_rect, &r);
00448 
00449         /* Mark the window as updated, otherwise Windows would send more WM_PAINT messages. */
00450         ValidateRect(hwnd, NULL);
00451         _draw_mutex->SendSignal();
00452       } else {
00453         PAINTSTRUCT ps;
00454 
00455         BeginPaint(hwnd, &ps);
00456         PaintWindow(ps.hdc);
00457         EndPaint(hwnd, &ps);
00458       }
00459       return 0;
00460 
00461     case WM_PALETTECHANGED:
00462       if ((HWND)wParam == hwnd) return 0;
00463       /* FALL THROUGH */
00464 
00465     case WM_QUERYNEWPALETTE: {
00466       HDC hDC = GetWindowDC(hwnd);
00467       HPALETTE hOldPalette = SelectPalette(hDC, _wnd.gdi_palette, FALSE);
00468       UINT nChanged = RealizePalette(hDC);
00469 
00470       SelectPalette(hDC, hOldPalette, TRUE);
00471       ReleaseDC(hwnd, hDC);
00472       if (nChanged != 0) InvalidateRect(hwnd, NULL, FALSE);
00473       return 0;
00474     }
00475 
00476     case WM_CLOSE:
00477       HandleExitGameRequest();
00478       return 0;
00479 
00480     case WM_DESTROY:
00481       if (_window_maximize) _cur_resolution = _bck_resolution;
00482       return 0;
00483 
00484     case WM_LBUTTONDOWN:
00485       SetCapture(hwnd);
00486       _left_button_down = true;
00487       HandleMouseEvents();
00488       return 0;
00489 
00490     case WM_LBUTTONUP:
00491       ReleaseCapture();
00492       _left_button_down = false;
00493       _left_button_clicked = false;
00494       HandleMouseEvents();
00495       return 0;
00496 
00497     case WM_RBUTTONDOWN:
00498       SetCapture(hwnd);
00499       _right_button_down = true;
00500       _right_button_clicked = true;
00501       HandleMouseEvents();
00502       return 0;
00503 
00504     case WM_RBUTTONUP:
00505       ReleaseCapture();
00506       _right_button_down = false;
00507       HandleMouseEvents();
00508       return 0;
00509 
00510     case WM_MOUSELEAVE:
00511       UndrawMouseCursor();
00512       _cursor.in_window = false;
00513 
00514       if (!_left_button_down && !_right_button_down) MyShowCursor(true);
00515       return 0;
00516 
00517     case WM_MOUSEMOVE: {
00518       int x = (int16)LOWORD(lParam);
00519       int y = (int16)HIWORD(lParam);
00520       POINT pt;
00521 
00522       /* If the mouse was not in the window and it has moved it means it has
00523        * come into the window, so start drawing the mouse. Also start
00524        * tracking the mouse for exiting the window */
00525       if (!_cursor.in_window) {
00526         _cursor.in_window = true;
00527         SetTimer(hwnd, TID_POLLMOUSE, MOUSE_POLL_DELAY, (TIMERPROC)TrackMouseTimerProc);
00528 
00529         DrawMouseCursor();
00530       }
00531 
00532       if (_cursor.fix_at) {
00533         int dx = x - _cursor.pos.x;
00534         int dy = y - _cursor.pos.y;
00535         if (dx != 0 || dy != 0) {
00536           _cursor.delta.x = dx;
00537           _cursor.delta.y = dy;
00538 
00539           pt.x = _cursor.pos.x;
00540           pt.y = _cursor.pos.y;
00541 
00542           ClientToScreen(hwnd, &pt);
00543           SetCursorPos(pt.x, pt.y);
00544         }
00545       } else {
00546         _cursor.delta.x = x - _cursor.pos.x;
00547         _cursor.delta.y = y - _cursor.pos.y;
00548         _cursor.pos.x = x;
00549         _cursor.pos.y = y;
00550         _cursor.dirty = true;
00551       }
00552       MyShowCursor(false);
00553       HandleMouseEvents();
00554       return 0;
00555     }
00556 
00557 #if !defined(UNICODE)
00558     case WM_INPUTLANGCHANGE: {
00559       TCHAR locale[6];
00560       LCID lcid = GB(lParam, 0, 16);
00561 
00562       int len = GetLocaleInfo(lcid, LOCALE_IDEFAULTANSICODEPAGE, locale, lengthof(locale));
00563       if (len != 0) _codepage = _ttoi(locale);
00564       return 1;
00565     }
00566 #endif /* UNICODE */
00567 
00568     case WM_DEADCHAR:
00569       console = GB(lParam, 16, 8) == 41;
00570       return 0;
00571 
00572     case WM_CHAR: {
00573       uint scancode = GB(lParam, 16, 8);
00574       uint charcode = wParam;
00575 
00576       /* If the console key is a dead-key, we need to press it twice to get a WM_CHAR message.
00577        * But we then get two WM_CHAR messages, so ignore the first one */
00578       if (console && scancode == 41) {
00579         console = false;
00580         return 0;
00581       }
00582 
00583 #if !defined(UNICODE)
00584       wchar_t w;
00585       int len = MultiByteToWideChar(_codepage, 0, (char*)&charcode, 1, &w, 1);
00586       charcode = len == 1 ? w : 0;
00587 #endif /* UNICODE */
00588 
00589       /* No matter the keyboard layout, we will map the '~' to the console */
00590       scancode = scancode == 41 ? (int)WKC_BACKQUOTE : keycode;
00591       HandleKeypress(GB(charcode, 0, 16) | (scancode << 16));
00592       return 0;
00593     }
00594 
00595     case WM_KEYDOWN: {
00596       keycode = MapWindowsKey(wParam);
00597 
00598       /* Silently drop all messages handled by WM_CHAR. */
00599       MSG msg;
00600       if (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE)) {
00601         if (msg.message == WM_CHAR && GB(lParam, 16, 8) == GB(msg.lParam, 16, 8)) {
00602           return 0;
00603         }
00604       }
00605 
00606       HandleKeypress(0 | (keycode << 16));
00607       return 0;
00608     }
00609 
00610     case WM_SYSKEYDOWN: // user presses F10 or Alt, both activating the title-menu
00611       switch (wParam) {
00612         case VK_RETURN:
00613         case 'F': // Full Screen on ALT + ENTER/F
00614           ToggleFullScreen(!_wnd.fullscreen);
00615           return 0;
00616 
00617         case VK_MENU: // Just ALT
00618           return 0; // do nothing
00619 
00620         case VK_F10: // F10, ignore activation of menu
00621           HandleKeypress(MapWindowsKey(wParam) << 16);
00622           return 0;
00623 
00624         default: // ALT in combination with something else
00625           HandleKeypress(MapWindowsKey(wParam) << 16);
00626           break;
00627       }
00628       break;
00629 
00630     case WM_SIZE:
00631       if (wParam != SIZE_MINIMIZED) {
00632         /* Set maximized flag when we maximize (obviously), but also when we
00633          * switched to fullscreen from a maximized state */
00634         _window_maximize = (wParam == SIZE_MAXIMIZED || (_window_maximize && _fullscreen));
00635         if (_window_maximize || _fullscreen) _bck_resolution = _cur_resolution;
00636         ClientSizeChanged(LOWORD(lParam), HIWORD(lParam));
00637       }
00638       return 0;
00639 
00640 #if !defined(WINCE)
00641     case WM_SIZING: {
00642       RECT *r = (RECT*)lParam;
00643       RECT r2;
00644       int w, h;
00645 
00646       SetRect(&r2, 0, 0, 0, 0);
00647       AdjustWindowRect(&r2, GetWindowLong(hwnd, GWL_STYLE), FALSE);
00648 
00649       w = r->right - r->left - (r2.right - r2.left);
00650       h = r->bottom - r->top - (r2.bottom - r2.top);
00651       w = max(w, 64);
00652       h = max(h, 64);
00653       SetRect(&r2, 0, 0, w, h);
00654 
00655       AdjustWindowRect(&r2, GetWindowLong(hwnd, GWL_STYLE), FALSE);
00656       w = r2.right - r2.left;
00657       h = r2.bottom - r2.top;
00658 
00659       switch (wParam) {
00660         case WMSZ_BOTTOM:
00661           r->bottom = r->top + h;
00662           break;
00663 
00664         case WMSZ_BOTTOMLEFT:
00665           r->bottom = r->top + h;
00666           r->left = r->right - w;
00667           break;
00668 
00669         case WMSZ_BOTTOMRIGHT:
00670           r->bottom = r->top + h;
00671           r->right = r->left + w;
00672           break;
00673 
00674         case WMSZ_LEFT:
00675           r->left = r->right - w;
00676           break;
00677 
00678         case WMSZ_RIGHT:
00679           r->right = r->left + w;
00680           break;
00681 
00682         case WMSZ_TOP:
00683           r->top = r->bottom - h;
00684           break;
00685 
00686         case WMSZ_TOPLEFT:
00687           r->top = r->bottom - h;
00688           r->left = r->right - w;
00689           break;
00690 
00691         case WMSZ_TOPRIGHT:
00692           r->top = r->bottom - h;
00693           r->right = r->left + w;
00694           break;
00695       }
00696       return TRUE;
00697     }
00698 #endif
00699 
00700 /* needed for wheel */
00701 #if !defined(WM_MOUSEWHEEL)
00702 # define WM_MOUSEWHEEL 0x020A
00703 #endif  /* WM_MOUSEWHEEL */
00704 #if !defined(GET_WHEEL_DELTA_WPARAM)
00705 # define GET_WHEEL_DELTA_WPARAM(wparam) ((short)HIWORD(wparam))
00706 #endif  /* GET_WHEEL_DELTA_WPARAM */
00707 
00708     case WM_MOUSEWHEEL: {
00709       int delta = GET_WHEEL_DELTA_WPARAM(wParam);
00710 
00711       if (delta < 0) {
00712         _cursor.wheel++;
00713       } else if (delta > 0) {
00714         _cursor.wheel--;
00715       }
00716       HandleMouseEvents();
00717       return 0;
00718     }
00719 
00720     case WM_SETFOCUS:
00721       _wnd.has_focus = true;
00722       break;
00723 
00724     case WM_KILLFOCUS:
00725       _wnd.has_focus = false;
00726       break;
00727 
00728 #if !defined(WINCE)
00729     case WM_ACTIVATE: {
00730       /* Don't do anything if we are closing openttd */
00731       if (_exit_game) break;
00732 
00733       bool active = (LOWORD(wParam) != WA_INACTIVE);
00734       bool minimized = (HIWORD(wParam) != 0);
00735       if (_wnd.fullscreen) {
00736         if (active && minimized) {
00737           /* Restore the game window */
00738           ShowWindow(hwnd, SW_RESTORE);
00739           static_cast<VideoDriver_Win32 *>(_video_driver)->MakeWindow(true);
00740         } else if (!active && !minimized) {
00741           /* Minimise the window and restore desktop */
00742           ShowWindow(hwnd, SW_MINIMIZE);
00743           ChangeDisplaySettings(NULL, 0);
00744         }
00745       }
00746       break;
00747     }
00748 #endif
00749   }
00750 
00751   return DefWindowProc(hwnd, msg, wParam, lParam);
00752 }
00753 
00754 static void RegisterWndClass()
00755 {
00756   static bool registered = false;
00757 
00758   if (!registered) {
00759     HINSTANCE hinst = GetModuleHandle(NULL);
00760     WNDCLASS wnd = {
00761       CS_OWNDC,
00762       WndProcGdi,
00763       0,
00764       0,
00765       hinst,
00766       LoadIcon(hinst, MAKEINTRESOURCE(100)),
00767       LoadCursor(NULL, IDC_ARROW),
00768       0,
00769       0,
00770       _T("OTTD")
00771     };
00772 
00773     registered = true;
00774     if (!RegisterClass(&wnd)) usererror("RegisterClass failed");
00775   }
00776 }
00777 
00778 static bool AllocateDibSection(int w, int h, bool force)
00779 {
00780   BITMAPINFO *bi;
00781   HDC dc;
00782   int bpp = BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth();
00783 
00784   w = max(w, 64);
00785   h = max(h, 64);
00786 
00787   if (bpp == 0) usererror("Can't use a blitter that blits 0 bpp for normal visuals");
00788 
00789   if (!force && w == _screen.width && h == _screen.height) return false;
00790 
00791   _screen.width = w;
00792   _screen.pitch = (bpp == 8) ? Align(w, 4) : w;
00793   _screen.height = h;
00794   bi = (BITMAPINFO*)alloca(sizeof(BITMAPINFOHEADER) + sizeof(RGBQUAD) * 256);
00795   memset(bi, 0, sizeof(BITMAPINFOHEADER) + sizeof(RGBQUAD) * 256);
00796   bi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
00797 
00798   bi->bmiHeader.biWidth = _wnd.width = w;
00799   bi->bmiHeader.biHeight = -(_wnd.height = h);
00800 
00801   bi->bmiHeader.biPlanes = 1;
00802   bi->bmiHeader.biBitCount = BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth();
00803   bi->bmiHeader.biCompression = BI_RGB;
00804 
00805   if (_wnd.dib_sect) DeleteObject(_wnd.dib_sect);
00806 
00807   dc = GetDC(0);
00808   _wnd.dib_sect = CreateDIBSection(dc, bi, DIB_RGB_COLORS, (VOID**)&_wnd.buffer_bits, NULL, 0);
00809   if (_wnd.dib_sect == NULL) usererror("CreateDIBSection failed");
00810   ReleaseDC(0, dc);
00811 
00812   return true;
00813 }
00814 
00815 static const Dimension default_resolutions[] = {
00816   {  640,  480 },
00817   {  800,  600 },
00818   { 1024,  768 },
00819   { 1152,  864 },
00820   { 1280,  800 },
00821   { 1280,  960 },
00822   { 1280, 1024 },
00823   { 1400, 1050 },
00824   { 1600, 1200 },
00825   { 1680, 1050 },
00826   { 1920, 1200 }
00827 };
00828 
00829 static void FindResolutions()
00830 {
00831   uint n = 0;
00832 #if defined(WINCE)
00833   /* EnumDisplaySettingsW is only supported in CE 4.2+
00834    * XXX -- One might argue that we assume 4.2+ on every system. Then we can use this function safely */
00835 #else
00836   uint i;
00837   DEVMODEA dm;
00838 
00839   /* XXX - EnumDisplaySettingsW crashes with unicows.dll on Windows95
00840    * Doesn't really matter since we don't pass a string anyways, but still
00841    * a letdown */
00842   for (i = 0; EnumDisplaySettingsA(NULL, i, &dm) != 0; i++) {
00843     if (dm.dmBitsPerPel == BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth() &&
00844         dm.dmPelsWidth >= 640 && dm.dmPelsHeight >= 480) {
00845       uint j;
00846 
00847       for (j = 0; j < n; j++) {
00848         if (_resolutions[j].width == dm.dmPelsWidth && _resolutions[j].height == dm.dmPelsHeight) break;
00849       }
00850 
00851       /* In the previous loop we have checked already existing/added resolutions if
00852        * they are the same as the new ones. If this is not the case (j == n); we have
00853        * looped all and found none, add the new one to the list. If we have reached the
00854        * maximum amount of resolutions, then quit querying the display */
00855       if (j == n) {
00856         _resolutions[j].width  = dm.dmPelsWidth;
00857         _resolutions[j].height = dm.dmPelsHeight;
00858         if (++n == lengthof(_resolutions)) break;
00859       }
00860     }
00861   }
00862 #endif
00863 
00864   /* We have found no resolutions, show the default list */
00865   if (n == 0) {
00866     memcpy(_resolutions, default_resolutions, sizeof(default_resolutions));
00867     n = lengthof(default_resolutions);
00868   }
00869 
00870   _num_resolutions = n;
00871   SortResolutions(_num_resolutions);
00872 }
00873 
00874 static FVideoDriver_Win32 iFVideoDriver_Win32;
00875 
00876 const char *VideoDriver_Win32::Start(const char * const *parm)
00877 {
00878   memset(&_wnd, 0, sizeof(_wnd));
00879 
00880   RegisterWndClass();
00881 
00882   MakePalette();
00883 
00884   FindResolutions();
00885 
00886   DEBUG(driver, 2, "Resolution for display: %ux%u", _cur_resolution.width, _cur_resolution.height);
00887 
00888   /* fullscreen uses those */
00889   _wnd.width_org  = _cur_resolution.width;
00890   _wnd.height_org = _cur_resolution.height;
00891 
00892   AllocateDibSection(_cur_resolution.width, _cur_resolution.height);
00893   this->MakeWindow(_fullscreen);
00894 
00895   MarkWholeScreenDirty();
00896 
00897   _draw_threaded = GetDriverParam(parm, "no_threads") == NULL && GetDriverParam(parm, "no_thread") == NULL && GetCPUCoreCount() > 1;
00898 
00899   return NULL;
00900 }
00901 
00902 void VideoDriver_Win32::Stop()
00903 {
00904   DeleteObject(_wnd.gdi_palette);
00905   DeleteObject(_wnd.dib_sect);
00906   DestroyWindow(_wnd.main_wnd);
00907 
00908 #if !defined(WINCE)
00909   if (_wnd.fullscreen) ChangeDisplaySettings(NULL, 0);
00910 #endif
00911   MyShowCursor(true);
00912 }
00913 
00914 void VideoDriver_Win32::MakeDirty(int left, int top, int width, int height)
00915 {
00916   RECT r = { left, top, left + width, top + height };
00917 
00918   InvalidateRect(_wnd.main_wnd, &r, FALSE);
00919 }
00920 
00921 static void CheckPaletteAnim()
00922 {
00923   if (_cur_palette.count_dirty == 0) return;
00924 
00925   _local_palette = _cur_palette;
00926   InvalidateRect(_wnd.main_wnd, NULL, FALSE);
00927 }
00928 
00929 void VideoDriver_Win32::MainLoop()
00930 {
00931   MSG mesg;
00932   uint32 cur_ticks = GetTickCount();
00933   uint32 last_cur_ticks = cur_ticks;
00934   uint32 next_tick = cur_ticks + MILLISECONDS_PER_TICK;
00935 
00936   if (_draw_threaded) {
00937     /* Initialise the mutex first, because that's the thing we *need*
00938      * directly in the newly created thread. */
00939     _draw_mutex = ThreadMutex::New();
00940     if (_draw_mutex == NULL) {
00941       _draw_threaded = false;
00942     } else {
00943       _draw_mutex->BeginCritical();
00944       _draw_continue = true;
00945 
00946       _draw_threaded = ThreadObject::New(&PaintWindowThread, NULL, &_draw_thread);
00947 
00948       /* Free the mutex if we won't be able to use it. */
00949       if (!_draw_threaded) {
00950         _draw_mutex->EndCritical();
00951         delete _draw_mutex;
00952         _draw_mutex = NULL;
00953       } else {
00954         DEBUG(driver, 1, "Threaded drawing enabled");
00955 
00956         /* Wait till the draw mutex has started itself. */
00957         _draw_mutex->WaitForSignal();
00958       }
00959     }
00960   }
00961 
00962   _wnd.running = true;
00963 
00964   CheckPaletteAnim();
00965   for (;;) {
00966     uint32 prev_cur_ticks = cur_ticks; // to check for wrapping
00967 
00968     while (PeekMessage(&mesg, NULL, 0, 0, PM_REMOVE)) {
00969       InteractiveRandom(); // randomness
00970       TranslateMessage(&mesg);
00971       DispatchMessage(&mesg);
00972     }
00973     if (_exit_game) return;
00974 
00975 #if defined(_DEBUG)
00976     if (_wnd.has_focus && GetAsyncKeyState(VK_SHIFT) < 0 &&
00977 #else
00978     /* Speed up using TAB, but disable for ALT+TAB of course */
00979     if (_wnd.has_focus && GetAsyncKeyState(VK_TAB) < 0 && GetAsyncKeyState(VK_MENU) >= 0 &&
00980 #endif
00981         !_networking && _game_mode != GM_MENU) {
00982       _fast_forward |= 2;
00983     } else if (_fast_forward & 2) {
00984       _fast_forward = 0;
00985     }
00986 
00987     cur_ticks = GetTickCount();
00988     if (cur_ticks >= next_tick || (_fast_forward && !_pause_mode) || cur_ticks < prev_cur_ticks) {
00989       _realtime_tick += cur_ticks - last_cur_ticks;
00990       last_cur_ticks = cur_ticks;
00991       next_tick = cur_ticks + MILLISECONDS_PER_TICK;
00992 
00993       bool old_ctrl_pressed = _ctrl_pressed;
00994 
00995       _ctrl_pressed = _wnd.has_focus && GetAsyncKeyState(VK_CONTROL)<0;
00996       _shift_pressed = _wnd.has_focus && GetAsyncKeyState(VK_SHIFT)<0;
00997 
00998       /* determine which directional keys are down */
00999       if (_wnd.has_focus) {
01000         _dirkeys =
01001           (GetAsyncKeyState(VK_LEFT) < 0 ? 1 : 0) +
01002           (GetAsyncKeyState(VK_UP) < 0 ? 2 : 0) +
01003           (GetAsyncKeyState(VK_RIGHT) < 0 ? 4 : 0) +
01004           (GetAsyncKeyState(VK_DOWN) < 0 ? 8 : 0);
01005       } else {
01006         _dirkeys = 0;
01007       }
01008 
01009       if (old_ctrl_pressed != _ctrl_pressed) HandleCtrlChanged();
01010 
01011 #if !defined(WINCE)
01012       /* Flush GDI buffer to ensure we don't conflict with the drawing thread. */
01013       GdiFlush();
01014 #endif
01015 
01016       /* The game loop is the part that can run asynchronously.
01017        * The rest except sleeping can't. */
01018       if (_draw_threaded) _draw_mutex->EndCritical();
01019       GameLoop();
01020       if (_draw_threaded) _draw_mutex->BeginCritical();
01021 
01022       if (_force_full_redraw) MarkWholeScreenDirty();
01023 
01024       _screen.dst_ptr = _wnd.buffer_bits;
01025       UpdateWindows();
01026       CheckPaletteAnim();
01027     } else {
01028 #if !defined(WINCE)
01029       /* Flush GDI buffer to ensure we don't conflict with the drawing thread. */
01030       GdiFlush();
01031 #endif
01032 
01033       /* Release the thread while sleeping */
01034       if (_draw_threaded) _draw_mutex->EndCritical();
01035       Sleep(1);
01036       if (_draw_threaded) _draw_mutex->BeginCritical();
01037 
01038       _screen.dst_ptr = _wnd.buffer_bits;
01039       NetworkDrawChatMessage();
01040       DrawMouseCursor();
01041     }
01042   }
01043 
01044   if (_draw_threaded) {
01045     _draw_continue = false;
01046     /* Sending signal if there is no thread blocked
01047      * is very valid and results in noop */
01048     _draw_mutex->SendSignal();
01049     _draw_mutex->EndCritical();
01050     _draw_thread->Join();
01051 
01052     delete _draw_mutex;
01053     delete _draw_thread;
01054   }
01055 }
01056 
01057 bool VideoDriver_Win32::ChangeResolution(int w, int h)
01058 {
01059   if (_window_maximize) ShowWindow(_wnd.main_wnd, SW_SHOWNORMAL);
01060 
01061   _wnd.width = _wnd.width_org = w;
01062   _wnd.height = _wnd.height_org = h;
01063 
01064   return this->MakeWindow(_fullscreen); // _wnd.fullscreen screws up ingame resolution switching
01065 }
01066 
01067 bool VideoDriver_Win32::ToggleFullscreen(bool full_screen)
01068 {
01069   return this->MakeWindow(full_screen);
01070 }
01071 
01072 bool VideoDriver_Win32::AfterBlitterChange()
01073 {
01074   return AllocateDibSection(_screen.width, _screen.height, true) && this->MakeWindow(_fullscreen);
01075 }