win32_v.cpp

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00001 /* $Id: win32_v.cpp 24900 2013-01-08 22:46:42Z planetmaker $ */
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     /* Check for 8 bpp support. */
00286     if (settings.dmBitsPerPel != 32 && ChangeDisplaySettings(&settings, CDS_FULLSCREEN | CDS_TEST) != DISP_CHANGE_SUCCESSFUL) {
00287       settings.dmBitsPerPel = 32;
00288     }
00289 
00290     /* Test fullscreen with current resolution, if it fails use desktop resolution. */
00291     if (ChangeDisplaySettings(&settings, CDS_FULLSCREEN | CDS_TEST) != DISP_CHANGE_SUCCESSFUL) {
00292       RECT r;
00293       GetWindowRect(GetDesktopWindow(), &r);
00294       /* Guard against recursion. If we already failed here once, just fall through to
00295        * the next ChangeDisplaySettings call which will fail and error out appropriately. */
00296       if ((int)settings.dmPelsWidth != r.right - r.left || (int)settings.dmPelsHeight != r.bottom - r.top) {
00297         return this->ChangeResolution(r.right - r.left, r.bottom - r.top);
00298       }
00299     }
00300 
00301     if (ChangeDisplaySettings(&settings, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL) {
00302       this->MakeWindow(false);  // don't care about the result
00303       return false;  // the request failed
00304     }
00305   } else if (_wnd.fullscreen) {
00306     /* restore display? */
00307     ChangeDisplaySettings(NULL, 0);
00308     /* restore the resolution */
00309     _wnd.width = _bck_resolution.width;
00310     _wnd.height = _bck_resolution.height;
00311   }
00312 #endif
00313 
00314   {
00315     RECT r;
00316     DWORD style, showstyle;
00317     int w, h;
00318 
00319     showstyle = SW_SHOWNORMAL;
00320     _wnd.fullscreen = full_screen;
00321     if (_wnd.fullscreen) {
00322       style = WS_POPUP;
00323       SetRect(&r, 0, 0, _wnd.width_org, _wnd.height_org);
00324     } else {
00325       style = WS_OVERLAPPEDWINDOW;
00326       /* On window creation, check if we were in maximize mode before */
00327       if (_window_maximize) showstyle = SW_SHOWMAXIMIZED;
00328       SetRect(&r, 0, 0, _wnd.width, _wnd.height);
00329     }
00330 
00331 #if !defined(WINCE)
00332     AdjustWindowRect(&r, style, FALSE);
00333 #endif
00334     w = r.right - r.left;
00335     h = r.bottom - r.top;
00336 
00337     if (_wnd.main_wnd != NULL) {
00338       if (!_window_maximize) SetWindowPos(_wnd.main_wnd, 0, 0, 0, w, h, SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOZORDER | SWP_NOMOVE);
00339     } else {
00340       TCHAR Windowtitle[50];
00341       int x = (GetSystemMetrics(SM_CXSCREEN) - w) / 2;
00342       int y = (GetSystemMetrics(SM_CYSCREEN) - h) / 2;
00343 
00344       _sntprintf(Windowtitle, lengthof(Windowtitle), _T("OpenTTD %s"), MB_TO_WIDE(_openttd_revision));
00345 
00346       _wnd.main_wnd = CreateWindow(_T("OTTD"), Windowtitle, style, x, y, w, h, 0, 0, GetModuleHandle(NULL), 0);
00347       if (_wnd.main_wnd == NULL) usererror("CreateWindow failed");
00348       ShowWindow(_wnd.main_wnd, showstyle);
00349     }
00350   }
00351 
00352   BlitterFactoryBase::GetCurrentBlitter()->PostResize();
00353 
00354   GameSizeChanged(); // invalidate all windows, force redraw
00355   return true; // the request succeeded
00356 }
00357 
00359 static void PaintWindow(HDC dc)
00360 {
00361   HDC dc2 = CreateCompatibleDC(dc);
00362   HBITMAP old_bmp = (HBITMAP)SelectObject(dc2, _wnd.dib_sect);
00363   HPALETTE old_palette = SelectPalette(dc, _wnd.gdi_palette, FALSE);
00364 
00365   if (_cur_palette.count_dirty != 0) {
00366     Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00367 
00368     switch (blitter->UsePaletteAnimation()) {
00369       case Blitter::PALETTE_ANIMATION_VIDEO_BACKEND:
00370         UpdatePalette(dc2, _local_palette.first_dirty, _local_palette.count_dirty);
00371         break;
00372 
00373       case Blitter::PALETTE_ANIMATION_BLITTER:
00374         blitter->PaletteAnimate(_local_palette);
00375         break;
00376 
00377       case Blitter::PALETTE_ANIMATION_NONE:
00378         break;
00379 
00380       default:
00381         NOT_REACHED();
00382     }
00383     _cur_palette.count_dirty = 0;
00384   }
00385 
00386   BitBlt(dc, 0, 0, _wnd.width, _wnd.height, dc2, 0, 0, SRCCOPY);
00387   SelectPalette(dc, old_palette, TRUE);
00388   SelectObject(dc2, old_bmp);
00389   DeleteDC(dc2);
00390 }
00391 
00392 static void PaintWindowThread(void *)
00393 {
00394   /* First tell the main thread we're started */
00395   _draw_mutex->BeginCritical();
00396   _draw_mutex->SendSignal();
00397 
00398   /* Do our best to make sure the main thread is the one that
00399    * gets the signal, and not our wait below. */
00400   Sleep(0);
00401 
00402   /* Now wait for the first thing to draw! */
00403   _draw_mutex->WaitForSignal();
00404 
00405   while (_draw_continue) {
00406     /* Convert update region from logical to device coordinates. */
00407     POINT pt = {0, 0};
00408     ClientToScreen(_wnd.main_wnd, &pt);
00409     OffsetRect(&_wnd.update_rect, pt.x, pt.y);
00410 
00411     /* Create a device context that is clipped to the region we need to draw.
00412      * GetDCEx 'consumes' the update region, so we may not destroy it ourself. */
00413     HRGN rgn = CreateRectRgnIndirect(&_wnd.update_rect);
00414     HDC dc = GetDCEx(_wnd.main_wnd, rgn, DCX_CLIPSIBLINGS | DCX_CLIPCHILDREN | DCX_INTERSECTRGN);
00415 
00416     PaintWindow(dc);
00417 
00418     /* Clear update rect. */
00419     SetRectEmpty(&_wnd.update_rect);
00420     ReleaseDC(_wnd.main_wnd, dc);
00421 
00422     /* Flush GDI buffer to ensure drawing here doesn't conflict with any GDI usage in the main WndProc. */
00423     GdiFlush();
00424 
00425     _draw_mutex->WaitForSignal();
00426   }
00427 
00428   _draw_mutex->EndCritical();
00429   _draw_thread->Exit();
00430 }
00431 
00432 static LRESULT CALLBACK WndProcGdi(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
00433 {
00434   static uint32 keycode = 0;
00435   static bool console = false;
00436   static bool in_sizemove = false;
00437 
00438   switch (msg) {
00439     case WM_CREATE:
00440       SetTimer(hwnd, TID_POLLMOUSE, MOUSE_POLL_DELAY, (TIMERPROC)TrackMouseTimerProc);
00441       break;
00442 
00443     case WM_ENTERSIZEMOVE:
00444       in_sizemove = true;
00445       break;
00446 
00447     case WM_EXITSIZEMOVE:
00448       in_sizemove = false;
00449       break;
00450 
00451     case WM_PAINT:
00452       if (!in_sizemove && _draw_mutex != NULL && !HasModalProgress()) {
00453         /* Get the union of the old update rect and the new update rect. */
00454         RECT r;
00455         GetUpdateRect(hwnd, &r, FALSE);
00456         UnionRect(&_wnd.update_rect, &_wnd.update_rect, &r);
00457 
00458         /* Mark the window as updated, otherwise Windows would send more WM_PAINT messages. */
00459         ValidateRect(hwnd, NULL);
00460         _draw_mutex->SendSignal();
00461       } else {
00462         PAINTSTRUCT ps;
00463 
00464         BeginPaint(hwnd, &ps);
00465         PaintWindow(ps.hdc);
00466         EndPaint(hwnd, &ps);
00467       }
00468       return 0;
00469 
00470     case WM_PALETTECHANGED:
00471       if ((HWND)wParam == hwnd) return 0;
00472       /* FALL THROUGH */
00473 
00474     case WM_QUERYNEWPALETTE: {
00475       HDC hDC = GetWindowDC(hwnd);
00476       HPALETTE hOldPalette = SelectPalette(hDC, _wnd.gdi_palette, FALSE);
00477       UINT nChanged = RealizePalette(hDC);
00478 
00479       SelectPalette(hDC, hOldPalette, TRUE);
00480       ReleaseDC(hwnd, hDC);
00481       if (nChanged != 0) InvalidateRect(hwnd, NULL, FALSE);
00482       return 0;
00483     }
00484 
00485     case WM_CLOSE:
00486       HandleExitGameRequest();
00487       return 0;
00488 
00489     case WM_DESTROY:
00490       if (_window_maximize) _cur_resolution = _bck_resolution;
00491       return 0;
00492 
00493     case WM_LBUTTONDOWN:
00494       SetCapture(hwnd);
00495       _left_button_down = true;
00496       HandleMouseEvents();
00497       return 0;
00498 
00499     case WM_LBUTTONUP:
00500       ReleaseCapture();
00501       _left_button_down = false;
00502       _left_button_clicked = false;
00503       HandleMouseEvents();
00504       return 0;
00505 
00506     case WM_RBUTTONDOWN:
00507       SetCapture(hwnd);
00508       _right_button_down = true;
00509       _right_button_clicked = true;
00510       HandleMouseEvents();
00511       return 0;
00512 
00513     case WM_RBUTTONUP:
00514       ReleaseCapture();
00515       _right_button_down = false;
00516       HandleMouseEvents();
00517       return 0;
00518 
00519     case WM_MOUSELEAVE:
00520       UndrawMouseCursor();
00521       _cursor.in_window = false;
00522 
00523       if (!_left_button_down && !_right_button_down) MyShowCursor(true);
00524       return 0;
00525 
00526     case WM_MOUSEMOVE: {
00527       int x = (int16)LOWORD(lParam);
00528       int y = (int16)HIWORD(lParam);
00529       POINT pt;
00530 
00531       /* If the mouse was not in the window and it has moved it means it has
00532        * come into the window, so start drawing the mouse. Also start
00533        * tracking the mouse for exiting the window */
00534       if (!_cursor.in_window) {
00535         _cursor.in_window = true;
00536         SetTimer(hwnd, TID_POLLMOUSE, MOUSE_POLL_DELAY, (TIMERPROC)TrackMouseTimerProc);
00537 
00538         DrawMouseCursor();
00539       }
00540 
00541       if (_cursor.fix_at) {
00542         int dx = x - _cursor.pos.x;
00543         int dy = y - _cursor.pos.y;
00544         if (dx != 0 || dy != 0) {
00545           _cursor.delta.x = dx;
00546           _cursor.delta.y = dy;
00547 
00548           pt.x = _cursor.pos.x;
00549           pt.y = _cursor.pos.y;
00550 
00551           ClientToScreen(hwnd, &pt);
00552           SetCursorPos(pt.x, pt.y);
00553         }
00554       } else {
00555         _cursor.delta.x = x - _cursor.pos.x;
00556         _cursor.delta.y = y - _cursor.pos.y;
00557         _cursor.pos.x = x;
00558         _cursor.pos.y = y;
00559         _cursor.dirty = true;
00560       }
00561       MyShowCursor(false);
00562       HandleMouseEvents();
00563       return 0;
00564     }
00565 
00566 #if !defined(UNICODE)
00567     case WM_INPUTLANGCHANGE: {
00568       TCHAR locale[6];
00569       LCID lcid = GB(lParam, 0, 16);
00570 
00571       int len = GetLocaleInfo(lcid, LOCALE_IDEFAULTANSICODEPAGE, locale, lengthof(locale));
00572       if (len != 0) _codepage = _ttoi(locale);
00573       return 1;
00574     }
00575 #endif /* UNICODE */
00576 
00577     case WM_DEADCHAR:
00578       console = GB(lParam, 16, 8) == 41;
00579       return 0;
00580 
00581     case WM_CHAR: {
00582       uint scancode = GB(lParam, 16, 8);
00583       uint charcode = wParam;
00584 
00585       /* If the console key is a dead-key, we need to press it twice to get a WM_CHAR message.
00586        * But we then get two WM_CHAR messages, so ignore the first one */
00587       if (console && scancode == 41) {
00588         console = false;
00589         return 0;
00590       }
00591 
00592 #if !defined(UNICODE)
00593       wchar_t w;
00594       int len = MultiByteToWideChar(_codepage, 0, (char*)&charcode, 1, &w, 1);
00595       charcode = len == 1 ? w : 0;
00596 #endif /* UNICODE */
00597 
00598       /* No matter the keyboard layout, we will map the '~' to the console */
00599       scancode = scancode == 41 ? (int)WKC_BACKQUOTE : keycode;
00600       HandleKeypress(GB(charcode, 0, 16) | (scancode << 16));
00601       return 0;
00602     }
00603 
00604     case WM_KEYDOWN: {
00605       keycode = MapWindowsKey(wParam);
00606 
00607       /* Silently drop all messages handled by WM_CHAR. */
00608       MSG msg;
00609       if (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE)) {
00610         if (msg.message == WM_CHAR && GB(lParam, 16, 8) == GB(msg.lParam, 16, 8)) {
00611           return 0;
00612         }
00613       }
00614 
00615       HandleKeypress(0 | (keycode << 16));
00616       return 0;
00617     }
00618 
00619     case WM_SYSKEYDOWN: // user presses F10 or Alt, both activating the title-menu
00620       switch (wParam) {
00621         case VK_RETURN:
00622         case 'F': // Full Screen on ALT + ENTER/F
00623           ToggleFullScreen(!_wnd.fullscreen);
00624           return 0;
00625 
00626         case VK_MENU: // Just ALT
00627           return 0; // do nothing
00628 
00629         case VK_F10: // F10, ignore activation of menu
00630           HandleKeypress(MapWindowsKey(wParam) << 16);
00631           return 0;
00632 
00633         default: // ALT in combination with something else
00634           HandleKeypress(MapWindowsKey(wParam) << 16);
00635           break;
00636       }
00637       break;
00638 
00639     case WM_SIZE:
00640       if (wParam != SIZE_MINIMIZED) {
00641         /* Set maximized flag when we maximize (obviously), but also when we
00642          * switched to fullscreen from a maximized state */
00643         _window_maximize = (wParam == SIZE_MAXIMIZED || (_window_maximize && _fullscreen));
00644         if (_window_maximize || _fullscreen) _bck_resolution = _cur_resolution;
00645         ClientSizeChanged(LOWORD(lParam), HIWORD(lParam));
00646       }
00647       return 0;
00648 
00649 #if !defined(WINCE)
00650     case WM_SIZING: {
00651       RECT *r = (RECT*)lParam;
00652       RECT r2;
00653       int w, h;
00654 
00655       SetRect(&r2, 0, 0, 0, 0);
00656       AdjustWindowRect(&r2, GetWindowLong(hwnd, GWL_STYLE), FALSE);
00657 
00658       w = r->right - r->left - (r2.right - r2.left);
00659       h = r->bottom - r->top - (r2.bottom - r2.top);
00660       w = max(w, 64);
00661       h = max(h, 64);
00662       SetRect(&r2, 0, 0, w, h);
00663 
00664       AdjustWindowRect(&r2, GetWindowLong(hwnd, GWL_STYLE), FALSE);
00665       w = r2.right - r2.left;
00666       h = r2.bottom - r2.top;
00667 
00668       switch (wParam) {
00669         case WMSZ_BOTTOM:
00670           r->bottom = r->top + h;
00671           break;
00672 
00673         case WMSZ_BOTTOMLEFT:
00674           r->bottom = r->top + h;
00675           r->left = r->right - w;
00676           break;
00677 
00678         case WMSZ_BOTTOMRIGHT:
00679           r->bottom = r->top + h;
00680           r->right = r->left + w;
00681           break;
00682 
00683         case WMSZ_LEFT:
00684           r->left = r->right - w;
00685           break;
00686 
00687         case WMSZ_RIGHT:
00688           r->right = r->left + w;
00689           break;
00690 
00691         case WMSZ_TOP:
00692           r->top = r->bottom - h;
00693           break;
00694 
00695         case WMSZ_TOPLEFT:
00696           r->top = r->bottom - h;
00697           r->left = r->right - w;
00698           break;
00699 
00700         case WMSZ_TOPRIGHT:
00701           r->top = r->bottom - h;
00702           r->right = r->left + w;
00703           break;
00704       }
00705       return TRUE;
00706     }
00707 #endif
00708 
00709 /* needed for wheel */
00710 #if !defined(WM_MOUSEWHEEL)
00711 # define WM_MOUSEWHEEL 0x020A
00712 #endif  /* WM_MOUSEWHEEL */
00713 #if !defined(GET_WHEEL_DELTA_WPARAM)
00714 # define GET_WHEEL_DELTA_WPARAM(wparam) ((short)HIWORD(wparam))
00715 #endif  /* GET_WHEEL_DELTA_WPARAM */
00716 
00717     case WM_MOUSEWHEEL: {
00718       int delta = GET_WHEEL_DELTA_WPARAM(wParam);
00719 
00720       if (delta < 0) {
00721         _cursor.wheel++;
00722       } else if (delta > 0) {
00723         _cursor.wheel--;
00724       }
00725       HandleMouseEvents();
00726       return 0;
00727     }
00728 
00729     case WM_SETFOCUS:
00730       _wnd.has_focus = true;
00731       break;
00732 
00733     case WM_KILLFOCUS:
00734       _wnd.has_focus = false;
00735       break;
00736 
00737 #if !defined(WINCE)
00738     case WM_ACTIVATE: {
00739       /* Don't do anything if we are closing openttd */
00740       if (_exit_game) break;
00741 
00742       bool active = (LOWORD(wParam) != WA_INACTIVE);
00743       bool minimized = (HIWORD(wParam) != 0);
00744       if (_wnd.fullscreen) {
00745         if (active && minimized) {
00746           /* Restore the game window */
00747           ShowWindow(hwnd, SW_RESTORE);
00748           static_cast<VideoDriver_Win32 *>(_video_driver)->MakeWindow(true);
00749         } else if (!active && !minimized) {
00750           /* Minimise the window and restore desktop */
00751           ShowWindow(hwnd, SW_MINIMIZE);
00752           ChangeDisplaySettings(NULL, 0);
00753         }
00754       }
00755       break;
00756     }
00757 #endif
00758   }
00759 
00760   return DefWindowProc(hwnd, msg, wParam, lParam);
00761 }
00762 
00763 static void RegisterWndClass()
00764 {
00765   static bool registered = false;
00766 
00767   if (!registered) {
00768     HINSTANCE hinst = GetModuleHandle(NULL);
00769     WNDCLASS wnd = {
00770       CS_OWNDC,
00771       WndProcGdi,
00772       0,
00773       0,
00774       hinst,
00775       LoadIcon(hinst, MAKEINTRESOURCE(100)),
00776       LoadCursor(NULL, IDC_ARROW),
00777       0,
00778       0,
00779       _T("OTTD")
00780     };
00781 
00782     registered = true;
00783     if (!RegisterClass(&wnd)) usererror("RegisterClass failed");
00784   }
00785 }
00786 
00787 static bool AllocateDibSection(int w, int h, bool force)
00788 {
00789   BITMAPINFO *bi;
00790   HDC dc;
00791   int bpp = BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth();
00792 
00793   w = max(w, 64);
00794   h = max(h, 64);
00795 
00796   if (bpp == 0) usererror("Can't use a blitter that blits 0 bpp for normal visuals");
00797 
00798   if (!force && w == _screen.width && h == _screen.height) return false;
00799 
00800   _screen.width = w;
00801   _screen.pitch = (bpp == 8) ? Align(w, 4) : w;
00802   _screen.height = h;
00803   bi = (BITMAPINFO*)alloca(sizeof(BITMAPINFOHEADER) + sizeof(RGBQUAD) * 256);
00804   memset(bi, 0, sizeof(BITMAPINFOHEADER) + sizeof(RGBQUAD) * 256);
00805   bi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
00806 
00807   bi->bmiHeader.biWidth = _wnd.width = w;
00808   bi->bmiHeader.biHeight = -(_wnd.height = h);
00809 
00810   bi->bmiHeader.biPlanes = 1;
00811   bi->bmiHeader.biBitCount = BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth();
00812   bi->bmiHeader.biCompression = BI_RGB;
00813 
00814   if (_wnd.dib_sect) DeleteObject(_wnd.dib_sect);
00815 
00816   dc = GetDC(0);
00817   _wnd.dib_sect = CreateDIBSection(dc, bi, DIB_RGB_COLORS, (VOID**)&_wnd.buffer_bits, NULL, 0);
00818   if (_wnd.dib_sect == NULL) usererror("CreateDIBSection failed");
00819   ReleaseDC(0, dc);
00820 
00821   return true;
00822 }
00823 
00824 static const Dimension default_resolutions[] = {
00825   {  640,  480 },
00826   {  800,  600 },
00827   { 1024,  768 },
00828   { 1152,  864 },
00829   { 1280,  800 },
00830   { 1280,  960 },
00831   { 1280, 1024 },
00832   { 1400, 1050 },
00833   { 1600, 1200 },
00834   { 1680, 1050 },
00835   { 1920, 1200 }
00836 };
00837 
00838 static void FindResolutions()
00839 {
00840   uint n = 0;
00841 #if defined(WINCE)
00842   /* EnumDisplaySettingsW is only supported in CE 4.2+
00843    * XXX -- One might argue that we assume 4.2+ on every system. Then we can use this function safely */
00844 #else
00845   uint i;
00846   DEVMODEA dm;
00847 
00848   /* XXX - EnumDisplaySettingsW crashes with unicows.dll on Windows95
00849    * Doesn't really matter since we don't pass a string anyways, but still
00850    * a letdown */
00851   for (i = 0; EnumDisplaySettingsA(NULL, i, &dm) != 0; i++) {
00852     if (dm.dmBitsPerPel == BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth() &&
00853         dm.dmPelsWidth >= 640 && dm.dmPelsHeight >= 480) {
00854       uint j;
00855 
00856       for (j = 0; j < n; j++) {
00857         if (_resolutions[j].width == dm.dmPelsWidth && _resolutions[j].height == dm.dmPelsHeight) break;
00858       }
00859 
00860       /* In the previous loop we have checked already existing/added resolutions if
00861        * they are the same as the new ones. If this is not the case (j == n); we have
00862        * looped all and found none, add the new one to the list. If we have reached the
00863        * maximum amount of resolutions, then quit querying the display */
00864       if (j == n) {
00865         _resolutions[j].width  = dm.dmPelsWidth;
00866         _resolutions[j].height = dm.dmPelsHeight;
00867         if (++n == lengthof(_resolutions)) break;
00868       }
00869     }
00870   }
00871 #endif
00872 
00873   /* We have found no resolutions, show the default list */
00874   if (n == 0) {
00875     memcpy(_resolutions, default_resolutions, sizeof(default_resolutions));
00876     n = lengthof(default_resolutions);
00877   }
00878 
00879   _num_resolutions = n;
00880   SortResolutions(_num_resolutions);
00881 }
00882 
00883 static FVideoDriver_Win32 iFVideoDriver_Win32;
00884 
00885 const char *VideoDriver_Win32::Start(const char * const *parm)
00886 {
00887   memset(&_wnd, 0, sizeof(_wnd));
00888 
00889   RegisterWndClass();
00890 
00891   MakePalette();
00892 
00893   FindResolutions();
00894 
00895   DEBUG(driver, 2, "Resolution for display: %ux%u", _cur_resolution.width, _cur_resolution.height);
00896 
00897   /* fullscreen uses those */
00898   _wnd.width_org  = _cur_resolution.width;
00899   _wnd.height_org = _cur_resolution.height;
00900 
00901   AllocateDibSection(_cur_resolution.width, _cur_resolution.height);
00902   this->MakeWindow(_fullscreen);
00903 
00904   MarkWholeScreenDirty();
00905 
00906   _draw_threaded = GetDriverParam(parm, "no_threads") == NULL && GetDriverParam(parm, "no_thread") == NULL && GetCPUCoreCount() > 1;
00907 
00908   return NULL;
00909 }
00910 
00911 void VideoDriver_Win32::Stop()
00912 {
00913   DeleteObject(_wnd.gdi_palette);
00914   DeleteObject(_wnd.dib_sect);
00915   DestroyWindow(_wnd.main_wnd);
00916 
00917 #if !defined(WINCE)
00918   if (_wnd.fullscreen) ChangeDisplaySettings(NULL, 0);
00919 #endif
00920   MyShowCursor(true);
00921 }
00922 
00923 void VideoDriver_Win32::MakeDirty(int left, int top, int width, int height)
00924 {
00925   RECT r = { left, top, left + width, top + height };
00926 
00927   InvalidateRect(_wnd.main_wnd, &r, FALSE);
00928 }
00929 
00930 static void CheckPaletteAnim()
00931 {
00932   if (_cur_palette.count_dirty == 0) return;
00933 
00934   _local_palette = _cur_palette;
00935   InvalidateRect(_wnd.main_wnd, NULL, FALSE);
00936 }
00937 
00938 void VideoDriver_Win32::MainLoop()
00939 {
00940   MSG mesg;
00941   uint32 cur_ticks = GetTickCount();
00942   uint32 last_cur_ticks = cur_ticks;
00943   uint32 next_tick = cur_ticks + MILLISECONDS_PER_TICK;
00944 
00945   if (_draw_threaded) {
00946     /* Initialise the mutex first, because that's the thing we *need*
00947      * directly in the newly created thread. */
00948     _draw_mutex = ThreadMutex::New();
00949     if (_draw_mutex == NULL) {
00950       _draw_threaded = false;
00951     } else {
00952       _draw_mutex->BeginCritical();
00953       _draw_continue = true;
00954 
00955       _draw_threaded = ThreadObject::New(&PaintWindowThread, NULL, &_draw_thread);
00956 
00957       /* Free the mutex if we won't be able to use it. */
00958       if (!_draw_threaded) {
00959         _draw_mutex->EndCritical();
00960         delete _draw_mutex;
00961         _draw_mutex = NULL;
00962       } else {
00963         DEBUG(driver, 1, "Threaded drawing enabled");
00964 
00965         /* Wait till the draw mutex has started itself. */
00966         _draw_mutex->WaitForSignal();
00967       }
00968     }
00969   }
00970 
00971   _wnd.running = true;
00972 
00973   CheckPaletteAnim();
00974   for (;;) {
00975     uint32 prev_cur_ticks = cur_ticks; // to check for wrapping
00976 
00977     while (PeekMessage(&mesg, NULL, 0, 0, PM_REMOVE)) {
00978       InteractiveRandom(); // randomness
00979       TranslateMessage(&mesg);
00980       DispatchMessage(&mesg);
00981     }
00982     if (_exit_game) return;
00983 
00984 #if defined(_DEBUG)
00985     if (_wnd.has_focus && GetAsyncKeyState(VK_SHIFT) < 0 &&
00986 #else
00987     /* Speed up using TAB, but disable for ALT+TAB of course */
00988     if (_wnd.has_focus && GetAsyncKeyState(VK_TAB) < 0 && GetAsyncKeyState(VK_MENU) >= 0 &&
00989 #endif
00990         !_networking && _game_mode != GM_MENU) {
00991       _fast_forward |= 2;
00992     } else if (_fast_forward & 2) {
00993       _fast_forward = 0;
00994     }
00995 
00996     cur_ticks = GetTickCount();
00997     if (cur_ticks >= next_tick || (_fast_forward && !_pause_mode) || cur_ticks < prev_cur_ticks) {
00998       _realtime_tick += cur_ticks - last_cur_ticks;
00999       last_cur_ticks = cur_ticks;
01000       next_tick = cur_ticks + MILLISECONDS_PER_TICK;
01001 
01002       bool old_ctrl_pressed = _ctrl_pressed;
01003 
01004       _ctrl_pressed = _wnd.has_focus && GetAsyncKeyState(VK_CONTROL)<0;
01005       _shift_pressed = _wnd.has_focus && GetAsyncKeyState(VK_SHIFT)<0;
01006 
01007       /* determine which directional keys are down */
01008       if (_wnd.has_focus) {
01009         _dirkeys =
01010           (GetAsyncKeyState(VK_LEFT) < 0 ? 1 : 0) +
01011           (GetAsyncKeyState(VK_UP) < 0 ? 2 : 0) +
01012           (GetAsyncKeyState(VK_RIGHT) < 0 ? 4 : 0) +
01013           (GetAsyncKeyState(VK_DOWN) < 0 ? 8 : 0);
01014       } else {
01015         _dirkeys = 0;
01016       }
01017 
01018       if (old_ctrl_pressed != _ctrl_pressed) HandleCtrlChanged();
01019 
01020 #if !defined(WINCE)
01021       /* Flush GDI buffer to ensure we don't conflict with the drawing thread. */
01022       GdiFlush();
01023 #endif
01024 
01025       /* The game loop is the part that can run asynchronously.
01026        * The rest except sleeping can't. */
01027       if (_draw_threaded) _draw_mutex->EndCritical();
01028       GameLoop();
01029       if (_draw_threaded) _draw_mutex->BeginCritical();
01030 
01031       if (_force_full_redraw) MarkWholeScreenDirty();
01032 
01033       _screen.dst_ptr = _wnd.buffer_bits;
01034       UpdateWindows();
01035       CheckPaletteAnim();
01036     } else {
01037 #if !defined(WINCE)
01038       /* Flush GDI buffer to ensure we don't conflict with the drawing thread. */
01039       GdiFlush();
01040 #endif
01041 
01042       /* Release the thread while sleeping */
01043       if (_draw_threaded) _draw_mutex->EndCritical();
01044       Sleep(1);
01045       if (_draw_threaded) _draw_mutex->BeginCritical();
01046 
01047       _screen.dst_ptr = _wnd.buffer_bits;
01048       NetworkDrawChatMessage();
01049       DrawMouseCursor();
01050     }
01051   }
01052 
01053   if (_draw_threaded) {
01054     _draw_continue = false;
01055     /* Sending signal if there is no thread blocked
01056      * is very valid and results in noop */
01057     _draw_mutex->SendSignal();
01058     _draw_mutex->EndCritical();
01059     _draw_thread->Join();
01060 
01061     delete _draw_mutex;
01062     delete _draw_thread;
01063   }
01064 }
01065 
01066 bool VideoDriver_Win32::ChangeResolution(int w, int h)
01067 {
01068   if (_window_maximize) ShowWindow(_wnd.main_wnd, SW_SHOWNORMAL);
01069 
01070   _wnd.width = _wnd.width_org = w;
01071   _wnd.height = _wnd.height_org = h;
01072 
01073   return this->MakeWindow(_fullscreen); // _wnd.fullscreen screws up ingame resolution switching
01074 }
01075 
01076 bool VideoDriver_Win32::ToggleFullscreen(bool full_screen)
01077 {
01078   return this->MakeWindow(full_screen);
01079 }
01080 
01081 bool VideoDriver_Win32::AfterBlitterChange()
01082 {
01083   return AllocateDibSection(_screen.width, _screen.height, true) && this->MakeWindow(_fullscreen);
01084 }