# win32_v.cpp

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    00001 /* $Id: win32_v.cpp 26024 2013-11-17 13:35:48Z rubidium $ */
    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 "../window_gui.h"
    00025 #include "../window_func.h"
    00026 #include "win32_v.h"
    00027 #include <windows.h>
    00028 #include <imm.h>
    00029
    00030 /* Missing define in MinGW headers. */
    00031 #ifndef MAPVK_VK_TO_CHAR
    00032 #define MAPVK_VK_TO_CHAR    (2)
    00033 #endif
    00034
    00035 static struct {
    00036   HWND main_wnd;
    00037   HBITMAP dib_sect;
    00038   void *buffer_bits;
    00039   HPALETTE gdi_palette;
    00040   RECT update_rect;
    00041   int width;
    00042   int height;
    00043   int width_org;
    00044   int height_org;
    00045   bool fullscreen;
    00046   bool has_focus;
    00047   bool running;
    00048 } _wnd;
    00049
    00050 bool _force_full_redraw;
    00051 bool _window_maximize;
    00052 uint _display_hz;
    00053 uint _fullscreen_bpp;
    00054 static Dimension _bck_resolution;
    00055 #if !defined(WINCE) || _WIN32_WCE >= 0x400
    00056 DWORD _imm_props;
    00057 #endif
    00058
    00060 static bool _draw_threaded;
    00062 static ThreadObject *_draw_thread = NULL;
    00064 static ThreadMutex *_draw_mutex = NULL;
    00066 static volatile bool _draw_continue;
    00068 static Palette _local_palette;
    00069
    00070 static void MakePalette()
    00071 {
    00072   LOGPALETTE *pal = (LOGPALETTE*)alloca(sizeof(LOGPALETTE) + (256 - 1) * sizeof(PALETTEENTRY));
    00073
    00074   pal->palVersion = 0x300;
    00075   pal->palNumEntries = 256;
    00076
    00077   for (uint i = 0; i != 256; i++) {
    00078     pal->palPalEntry[i].peRed   = _cur_palette.palette[i].r;
    00079     pal->palPalEntry[i].peGreen = _cur_palette.palette[i].g;
    00080     pal->palPalEntry[i].peBlue  = _cur_palette.palette[i].b;
    00081     pal->palPalEntry[i].peFlags = 0;
    00082
    00083   }
    00084   _wnd.gdi_palette = CreatePalette(pal);
    00085   if (_wnd.gdi_palette == NULL) usererror("CreatePalette failed!\n");
    00086
    00087   _cur_palette.first_dirty = 0;
    00088   _cur_palette.count_dirty = 256;
    00089   _local_palette = _cur_palette;
    00090 }
    00091
    00092 static void UpdatePalette(HDC dc, uint start, uint count)
    00093 {
    00094   RGBQUAD rgb[256];
    00095   uint i;
    00096
    00097   for (i = 0; i != count; i++) {
    00098     rgb[i].rgbRed   = _local_palette.palette[start + i].r;
    00099     rgb[i].rgbGreen = _local_palette.palette[start + i].g;
    00100     rgb[i].rgbBlue  = _local_palette.palette[start + i].b;
    00101     rgb[i].rgbReserved = 0;
    00102   }
    00103
    00104   SetDIBColorTable(dc, start, count, rgb);
    00105 }
    00106
    00107 bool VideoDriver_Win32::ClaimMousePointer()
    00108 {
    00109   MyShowCursor(false, true);
    00110   return true;
    00111 }
    00112
    00113 struct VkMapping {
    00114   byte vk_from;
    00115   byte vk_count;
    00116   byte map_to;
    00117 };
    00118
    00119 #define AS(x, z) {x, 0, z}
    00120 #define AM(x, y, z, w) {x, y - x, z}
    00121
    00122 static const VkMapping _vk_mapping[] = {
    00123   /* Pageup stuff + up/down */
    00124   AM(VK_PRIOR, VK_DOWN, WKC_PAGEUP, WKC_DOWN),
    00125   /* Map letters & digits */
    00126   AM('A', 'Z', 'A', 'Z'),
    00127   AM('0', '9', '0', '9'),
    00128
    00129   AS(VK_ESCAPE,   WKC_ESC),
    00130   AS(VK_PAUSE,    WKC_PAUSE),
    00131   AS(VK_BACK,     WKC_BACKSPACE),
    00132   AM(VK_INSERT,   VK_DELETE, WKC_INSERT, WKC_DELETE),
    00133
    00134   AS(VK_SPACE,    WKC_SPACE),
    00135   AS(VK_RETURN,   WKC_RETURN),
    00136   AS(VK_TAB,      WKC_TAB),
    00137
    00138   /* Function keys */
    00139   AM(VK_F1, VK_F12, WKC_F1, WKC_F12),
    00140
    00141   /* Numeric part */
    00142   AM(VK_NUMPAD0, VK_NUMPAD9, '0', '9'),
    00143   AS(VK_DIVIDE,   WKC_NUM_DIV),
    00144   AS(VK_MULTIPLY, WKC_NUM_MUL),
    00145   AS(VK_SUBTRACT, WKC_NUM_MINUS),
    00146   AS(VK_ADD,      WKC_NUM_PLUS),
    00147   AS(VK_DECIMAL,  WKC_NUM_DECIMAL),
    00148
    00149   /* Other non-letter keys */
    00150   AS(0xBF,  WKC_SLASH),
    00151   AS(0xBA,  WKC_SEMICOLON),
    00152   AS(0xBB,  WKC_EQUALS),
    00153   AS(0xDB,  WKC_L_BRACKET),
    00154   AS(0xDC,  WKC_BACKSLASH),
    00155   AS(0xDD,  WKC_R_BRACKET),
    00156
    00157   AS(0xDE,  WKC_SINGLEQUOTE),
    00158   AS(0xBC,  WKC_COMMA),
    00159   AS(0xBD,  WKC_MINUS),
    00160   AS(0xBE,  WKC_PERIOD)
    00161 };
    00162
    00163 static uint MapWindowsKey(uint sym)
    00164 {
    00165   const VkMapping *map;
    00166   uint key = 0;
    00167
    00168   for (map = _vk_mapping; map != endof(_vk_mapping); ++map) {
    00169     if ((uint)(sym - map->vk_from) <= map->vk_count) {
    00170       key = sym - map->vk_from + map->map_to;
    00171       break;
    00172     }
    00173   }
    00174
    00175   if (GetAsyncKeyState(VK_SHIFT)   < 0) key |= WKC_SHIFT;
    00176   if (GetAsyncKeyState(VK_CONTROL) < 0) key |= WKC_CTRL;
    00177   if (GetAsyncKeyState(VK_MENU)    < 0) key |= WKC_ALT;
    00178   return key;
    00179 }
    00180
    00181 static bool AllocateDibSection(int w, int h, bool force = false);
    00182
    00183 static void ClientSizeChanged(int w, int h)
    00184 {
    00185   /* allocate new dib section of the new size */
    00186   if (AllocateDibSection(w, h)) {
    00187     if (_draw_mutex != NULL) _draw_mutex->BeginCritical();
    00188     /* mark all palette colours dirty */
    00189     _cur_palette.first_dirty = 0;
    00190     _cur_palette.count_dirty = 256;
    00191     _local_palette = _cur_palette;
    00192
    00193     BlitterFactoryBase::GetCurrentBlitter()->PostResize();
    00194
    00195     GameSizeChanged();
    00196
    00197     /* redraw screen */
    00198     if (_wnd.running) {
    00199       _screen.dst_ptr = _wnd.buffer_bits;
    00200       UpdateWindows();
    00201     }
    00202
    00203     if (_draw_mutex != NULL) _draw_mutex->EndCritical();
    00204   }
    00205 }
    00206
    00207 #ifdef _DEBUG
    00208 /* Keep this function here..
    00209  * It allows you to redraw the screen from within the MSVC debugger */
    00210 int RedrawScreenDebug()
    00211 {
    00212   HDC dc, dc2;
    00213   static int _fooctr;
    00214   HBITMAP old_bmp;
    00215   HPALETTE old_palette;
    00216
    00217   _screen.dst_ptr = _wnd.buffer_bits;
    00218   UpdateWindows();
    00219
    00220   dc = GetDC(_wnd.main_wnd);
    00221   dc2 = CreateCompatibleDC(dc);
    00222
    00223   old_bmp = (HBITMAP)SelectObject(dc2, _wnd.dib_sect);
    00224   old_palette = SelectPalette(dc, _wnd.gdi_palette, FALSE);
    00225   BitBlt(dc, 0, 0, _wnd.width, _wnd.height, dc2, 0, 0, SRCCOPY);
    00226   SelectPalette(dc, old_palette, TRUE);
    00227   SelectObject(dc2, old_bmp);
    00228   DeleteDC(dc2);
    00229   ReleaseDC(_wnd.main_wnd, dc);
    00230
    00231   return _fooctr++;
    00232 }
    00233 #endif
    00234
    00235 /* Windows 95 will not have a WM_MOUSELEAVE message, so define it if needed */
    00236 #if !defined(WM_MOUSELEAVE)
    00237 #define WM_MOUSELEAVE 0x02A3
    00238 #endif
    00239 #define TID_POLLMOUSE 1
    00240 #define MOUSE_POLL_DELAY 75
    00241
    00242 static void CALLBACK TrackMouseTimerProc(HWND hwnd, UINT msg, UINT event, DWORD time)
    00243 {
    00244   RECT rc;
    00245   POINT pt;
    00246
    00247   /* Get the rectangle of our window and translate it to screen coordinates.
    00248    * Compare this with the current screen coordinates of the mouse and if it
    00249    * falls outside of the area or our window we have left the window. */
    00250   GetClientRect(hwnd, &rc);
    00251   MapWindowPoints(hwnd, HWND_DESKTOP, (LPPOINT)(LPRECT)&rc, 2);
    00252   GetCursorPos(&pt);
    00253
    00254   if (!PtInRect(&rc, pt) || (WindowFromPoint(pt) != hwnd)) {
    00255     KillTimer(hwnd, event);
    00256     PostMessage(hwnd, WM_MOUSELEAVE, 0, 0L);
    00257   }
    00258 }
    00259
    00265 bool VideoDriver_Win32::MakeWindow(bool full_screen)
    00266 {
    00267   _fullscreen = full_screen;
    00268
    00269   /* recreate window? */
    00270   if ((full_screen || _wnd.fullscreen) && _wnd.main_wnd) {
    00271     DestroyWindow(_wnd.main_wnd);
    00272     _wnd.main_wnd = 0;
    00273   }
    00274
    00275 #if defined(WINCE)
    00276   /* WinCE is always fullscreen */
    00277 #else
    00278   if (full_screen) {
    00279     DEVMODE settings;
    00280
    00281     /* Make sure we are always at least the screen-depth of the blitter */
    00282     if (_fullscreen_bpp < BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth()) _fullscreen_bpp = BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth();
    00283
    00284     memset(&settings, 0, sizeof(settings));
    00285     settings.dmSize = sizeof(settings);
    00286     settings.dmFields =
    00287       (_fullscreen_bpp != 0 ? DM_BITSPERPEL : 0) |
    00288       DM_PELSWIDTH |
    00289       DM_PELSHEIGHT |
    00290       (_display_hz != 0 ? DM_DISPLAYFREQUENCY : 0);
    00291     settings.dmBitsPerPel = _fullscreen_bpp;
    00292     settings.dmPelsWidth  = _wnd.width_org;
    00293     settings.dmPelsHeight = _wnd.height_org;
    00294     settings.dmDisplayFrequency = _display_hz;
    00295
    00296     /* Check for 8 bpp support. */
    00297     if (settings.dmBitsPerPel != 32 && ChangeDisplaySettings(&settings, CDS_FULLSCREEN | CDS_TEST) != DISP_CHANGE_SUCCESSFUL) {
    00298       settings.dmBitsPerPel = 32;
    00299     }
    00300
    00301     /* Test fullscreen with current resolution, if it fails use desktop resolution. */
    00302     if (ChangeDisplaySettings(&settings, CDS_FULLSCREEN | CDS_TEST) != DISP_CHANGE_SUCCESSFUL) {
    00303       RECT r;
    00304       GetWindowRect(GetDesktopWindow(), &r);
    00305       /* Guard against recursion. If we already failed here once, just fall through to
    00306        * the next ChangeDisplaySettings call which will fail and error out appropriately. */
    00307       if ((int)settings.dmPelsWidth != r.right - r.left || (int)settings.dmPelsHeight != r.bottom - r.top) {
    00308         return this->ChangeResolution(r.right - r.left, r.bottom - r.top);
    00309       }
    00310     }
    00311
    00312     if (ChangeDisplaySettings(&settings, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL) {
    00313       this->MakeWindow(false);  // don't care about the result
    00314       return false;  // the request failed
    00315     }
    00316   } else if (_wnd.fullscreen) {
    00317     /* restore display? */
    00318     ChangeDisplaySettings(NULL, 0);
    00319     /* restore the resolution */
    00320     _wnd.width = _bck_resolution.width;
    00321     _wnd.height = _bck_resolution.height;
    00322   }
    00323 #endif
    00324
    00325   {
    00326     RECT r;
    00327     DWORD style, showstyle;
    00328     int w, h;
    00329
    00330     showstyle = SW_SHOWNORMAL;
    00331     _wnd.fullscreen = full_screen;
    00332     if (_wnd.fullscreen) {
    00333       style = WS_POPUP;
    00334       SetRect(&r, 0, 0, _wnd.width_org, _wnd.height_org);
    00335     } else {
    00336       style = WS_OVERLAPPEDWINDOW;
    00337       /* On window creation, check if we were in maximize mode before */
    00338       if (_window_maximize) showstyle = SW_SHOWMAXIMIZED;
    00339       SetRect(&r, 0, 0, _wnd.width, _wnd.height);
    00340     }
    00341
    00342 #if !defined(WINCE)
    00343     AdjustWindowRect(&r, style, FALSE);
    00344 #endif
    00345     w = r.right - r.left;
    00346     h = r.bottom - r.top;
    00347
    00348     if (_wnd.main_wnd != NULL) {
    00349       if (!_window_maximize) SetWindowPos(_wnd.main_wnd, 0, 0, 0, w, h, SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOZORDER | SWP_NOMOVE);
    00350     } else {
    00351       TCHAR Windowtitle[50];
    00352       int x = (GetSystemMetrics(SM_CXSCREEN) - w) / 2;
    00353       int y = (GetSystemMetrics(SM_CYSCREEN) - h) / 2;
    00354
    00355       _sntprintf(Windowtitle, lengthof(Windowtitle), _T("OpenTTD %s"), MB_TO_WIDE(_openttd_revision));
    00356
    00357       _wnd.main_wnd = CreateWindow(_T("OTTD"), Windowtitle, style, x, y, w, h, 0, 0, GetModuleHandle(NULL), 0);
    00358       if (_wnd.main_wnd == NULL) usererror("CreateWindow failed");
    00359       ShowWindow(_wnd.main_wnd, showstyle);
    00360     }
    00361   }
    00362
    00363   BlitterFactoryBase::GetCurrentBlitter()->PostResize();
    00364
    00365   GameSizeChanged(); // invalidate all windows, force redraw
    00366   return true; // the request succeeded
    00367 }
    00368
    00370 static void PaintWindow(HDC dc)
    00371 {
    00372   HDC dc2 = CreateCompatibleDC(dc);
    00373   HBITMAP old_bmp = (HBITMAP)SelectObject(dc2, _wnd.dib_sect);
    00374   HPALETTE old_palette = SelectPalette(dc, _wnd.gdi_palette, FALSE);
    00375
    00376   if (_cur_palette.count_dirty != 0) {
    00377     Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
    00378
    00379     switch (blitter->UsePaletteAnimation()) {
    00380       case Blitter::PALETTE_ANIMATION_VIDEO_BACKEND:
    00381         UpdatePalette(dc2, _local_palette.first_dirty, _local_palette.count_dirty);
    00382         break;
    00383
    00384       case Blitter::PALETTE_ANIMATION_BLITTER:
    00385         blitter->PaletteAnimate(_local_palette);
    00386         break;
    00387
    00388       case Blitter::PALETTE_ANIMATION_NONE:
    00389         break;
    00390
    00391       default:
    00392         NOT_REACHED();
    00393     }
    00394     _cur_palette.count_dirty = 0;
    00395   }
    00396
    00397   BitBlt(dc, 0, 0, _wnd.width, _wnd.height, dc2, 0, 0, SRCCOPY);
    00398   SelectPalette(dc, old_palette, TRUE);
    00399   SelectObject(dc2, old_bmp);
    00400   DeleteDC(dc2);
    00401 }
    00402
    00403 static void PaintWindowThread(void *)
    00404 {
    00405   /* First tell the main thread we're started */
    00406   _draw_mutex->BeginCritical();
    00407   _draw_mutex->SendSignal();
    00408
    00409   /* Do our best to make sure the main thread is the one that
    00410    * gets the signal, and not our wait below. */
    00411   Sleep(0);
    00412
    00413   /* Now wait for the first thing to draw! */
    00414   _draw_mutex->WaitForSignal();
    00415
    00416   while (_draw_continue) {
    00417     /* Convert update region from logical to device coordinates. */
    00418     POINT pt = {0, 0};
    00419     ClientToScreen(_wnd.main_wnd, &pt);
    00420     OffsetRect(&_wnd.update_rect, pt.x, pt.y);
    00421
    00422     /* Create a device context that is clipped to the region we need to draw.
    00423      * GetDCEx 'consumes' the update region, so we may not destroy it ourself. */
    00424     HRGN rgn = CreateRectRgnIndirect(&_wnd.update_rect);
    00425     HDC dc = GetDCEx(_wnd.main_wnd, rgn, DCX_CLIPSIBLINGS | DCX_CLIPCHILDREN | DCX_INTERSECTRGN);
    00426
    00427     PaintWindow(dc);
    00428
    00429     /* Clear update rect. */
    00430     SetRectEmpty(&_wnd.update_rect);
    00431     ReleaseDC(_wnd.main_wnd, dc);
    00432
    00433     /* Flush GDI buffer to ensure drawing here doesn't conflict with any GDI usage in the main WndProc. */
    00434     GdiFlush();
    00435
    00436     _draw_mutex->WaitForSignal();
    00437   }
    00438
    00439   _draw_mutex->EndCritical();
    00440   _draw_thread->Exit();
    00441 }
    00442
    00444 static LRESULT HandleCharMsg(uint keycode, WChar charcode)
    00445 {
    00446 #if !defined(UNICODE)
    00447   static char prev_char = 0;
    00448
    00449   char input[2] = {(char)charcode, 0};
    00450   int input_len = 1;
    00451
    00452   if (prev_char != 0) {
    00453     /* We stored a lead byte previously, combine it with this byte. */
    00454     input[0] = prev_char;
    00455     input[1] = (char)charcode;
    00456     input_len = 2;
    00457   } else if (IsDBCSLeadByte(charcode)) {
    00458     /* We got a lead byte, store and exit. */
    00459     prev_char = charcode;
    00460     return 0;
    00461   }
    00462   prev_char = 0;
    00463
    00464   wchar_t w[2]; // Can get up to two code points as a result.
    00465   int len = MultiByteToWideChar(CP_ACP, 0, input, input_len, w, 2);
    00466   switch (len) {
    00467     case 1: // Normal unicode character.
    00468       charcode = w[0];
    00469       break;
    00470
    00471     case 2: // Got an UTF-16 surrogate pair back.
    00472       charcode = Utf16DecodeSurrogate(w[0], w[1]);
    00473       break;
    00474
    00475     default: // Some kind of error.
    00476       DEBUG(driver, 1, "Invalid DBCS character sequence encountered, dropping input");
    00477       charcode = 0;
    00478       break;
    00479   }
    00480 #else
    00481   static WChar prev_char = 0;
    00482
    00483   /* Did we get a lead surrogate? If yes, store and exit. */
    00484   if (Utf16IsLeadSurrogate(charcode)) {
    00485     if (prev_char != 0) DEBUG(driver, 1, "Got two UTF-16 lead surrogates, dropping the first one");
    00486     prev_char = charcode;
    00487     return 0;
    00488   }
    00489
    00490   /* Stored lead surrogate and incoming trail surrogate? Combine and forward to input handling. */
    00491   if (prev_char != 0) {
    00492     if (Utf16IsTrailSurrogate(charcode)) {
    00493       charcode = Utf16DecodeSurrogate(prev_char, charcode);
    00494     } else {
    00495       DEBUG(driver, 1, "Got an UTF-16 lead surrogate without a trail surrogate, dropping the lead surrogate");
    00496     }
    00497   }
    00498   prev_char = 0;
    00499 #endif /* UNICODE */
    00500
    00501   HandleKeypress(keycode, charcode);
    00502
    00503   return 0;
    00504 }
    00505
    00506 #if !defined(WINCE) || _WIN32_WCE >= 0x400
    00507
    00508 static bool DrawIMECompositionString()
    00509 {
    00510   return (_imm_props & IME_PROP_AT_CARET) && !(_imm_props & IME_PROP_SPECIAL_UI);
    00511 }
    00512
    00514 static void SetCompositionPos(HWND hwnd)
    00515 {
    00516   HIMC hIMC = ImmGetContext(hwnd);
    00517   if (hIMC != NULL) {
    00518     COMPOSITIONFORM cf;
    00519     cf.dwStyle = CFS_POINT;
    00520
    00521     if (EditBoxInGlobalFocus()) {
    00522       /* Get caret position. */
    00523       Point pt = _focused_window->GetCaretPosition();
    00524       cf.ptCurrentPos.x = _focused_window->left + pt.x;
    00525       cf.ptCurrentPos.y = _focused_window->top  + pt.y;
    00526     } else {
    00527       cf.ptCurrentPos.x = 0;
    00528       cf.ptCurrentPos.y = 0;
    00529     }
    00530     ImmSetCompositionWindow(hIMC, &cf);
    00531   }
    00532   ImmReleaseContext(hwnd, hIMC);
    00533 }
    00534
    00536 static void SetCandidatePos(HWND hwnd)
    00537 {
    00538   HIMC hIMC = ImmGetContext(hwnd);
    00539   if (hIMC != NULL) {
    00540     CANDIDATEFORM cf;
    00541     cf.dwIndex = 0;
    00542     cf.dwStyle = CFS_EXCLUDE;
    00543
    00544     if (EditBoxInGlobalFocus()) {
    00545       Point pt = _focused_window->GetCaretPosition();
    00546       cf.ptCurrentPos.x = _focused_window->left + pt.x;
    00547       cf.ptCurrentPos.y = _focused_window->top  + pt.y;
    00548       if (_focused_window->window_class == WC_CONSOLE) {
    00549         cf.rcArea.left   = _focused_window->left;
    00550         cf.rcArea.top    = _focused_window->top;
    00551         cf.rcArea.right  = _focused_window->left + _focused_window->width;
    00552         cf.rcArea.bottom = _focused_window->top  + _focused_window->height;
    00553       } else {
    00554         cf.rcArea.left   = _focused_window->left + _focused_window->nested_focus->pos_x;
    00555         cf.rcArea.top    = _focused_window->top  + _focused_window->nested_focus->pos_y;
    00556         cf.rcArea.right  = cf.rcArea.left + _focused_window->nested_focus->current_x;
    00557         cf.rcArea.bottom = cf.rcArea.top  + _focused_window->nested_focus->current_y;
    00558       }
    00559     } else {
    00560       cf.ptCurrentPos.x = 0;
    00561       cf.ptCurrentPos.y = 0;
    00562       SetRectEmpty(&cf.rcArea);
    00563     }
    00564     ImmSetCandidateWindow(hIMC, &cf);
    00565   }
    00566   ImmReleaseContext(hwnd, hIMC);
    00567 }
    00568
    00570 static LRESULT HandleIMEComposition(HWND hwnd, WPARAM wParam, LPARAM lParam)
    00571 {
    00572   HIMC hIMC = ImmGetContext(hwnd);
    00573
    00574   if (hIMC != NULL) {
    00575     if (lParam & GCS_RESULTSTR) {
    00576       /* Read result string from the IME. */
    00577       LONG len = ImmGetCompositionString(hIMC, GCS_RESULTSTR, NULL, 0); // Length is always in bytes, even in UNICODE build.
    00578       TCHAR *str = (TCHAR *)_alloca(len + sizeof(TCHAR));
    00579       len = ImmGetCompositionString(hIMC, GCS_RESULTSTR, str, len);
    00580       str[len / sizeof(TCHAR)] = '\0';
    00581
    00582       /* Transmit text to windowing system. */
    00583       if (len > 0) {
    00584         HandleTextInput(NULL, true); // Clear marked string.
    00585         HandleTextInput(FS2OTTD(str));
    00586       }
    00587       SetCompositionPos(hwnd);
    00588
    00589       /* Don't pass the result string on to the default window proc. */
    00590       lParam &= ~(GCS_RESULTSTR | GCS_RESULTCLAUSE | GCS_RESULTREADCLAUSE | GCS_RESULTREADSTR);
    00591     }
    00592
    00593     if ((lParam & GCS_COMPSTR) && DrawIMECompositionString()) {
    00594       /* Read composition string from the IME. */
    00595       LONG len = ImmGetCompositionString(hIMC, GCS_COMPSTR, NULL, 0); // Length is always in bytes, even in UNICODE build.
    00596       TCHAR *str = (TCHAR *)_alloca(len + sizeof(TCHAR));
    00597       len = ImmGetCompositionString(hIMC, GCS_COMPSTR, str, len);
    00598       str[len / sizeof(TCHAR)] = '\0';
    00599
    00600       if (len > 0) {
    00601         static char utf8_buf[1024];
    00602         convert_from_fs(str, utf8_buf, lengthof(utf8_buf));
    00603
    00604         /* Convert caret position from bytes in the input string to a position in the UTF-8 encoded string. */
    00605         LONG caret_bytes = ImmGetCompositionString(hIMC, GCS_CURSORPOS, NULL, 0);
    00606         const char *caret = utf8_buf;
    00607         for (const TCHAR *c = str; *c != '\0' && *caret != '\0' && caret_bytes > 0; c++, caret_bytes--) {
    00608           /* Skip DBCS lead bytes or leading surrogates. */
    00609 #ifdef UNICODE
    00610           if (Utf16IsLeadSurrogate(*c)) {
    00611 #else
    00612           if (IsDBCSLeadByte(*c)) {
    00613 #endif
    00614             c++;
    00615             caret_bytes--;
    00616           }
    00617           Utf8Consume(&caret);
    00618         }
    00619
    00620         HandleTextInput(utf8_buf, true, caret);
    00621       } else {
    00622         HandleTextInput(NULL, true);
    00623       }
    00624
    00625       lParam &= ~(GCS_COMPSTR | GCS_COMPATTR | GCS_COMPCLAUSE | GCS_CURSORPOS | GCS_DELTASTART);
    00626     }
    00627   }
    00628   ImmReleaseContext(hwnd, hIMC);
    00629
    00630   return lParam != 0 ? DefWindowProc(hwnd, WM_IME_COMPOSITION, wParam, lParam) : 0;
    00631 }
    00632
    00634 static void CancelIMEComposition(HWND hwnd)
    00635 {
    00636   HIMC hIMC = ImmGetContext(hwnd);
    00637   if (hIMC != NULL) ImmNotifyIME(hIMC, NI_COMPOSITIONSTR, CPS_CANCEL, 0);
    00638   ImmReleaseContext(hwnd, hIMC);
    00639   /* Clear any marked string from the current edit box. */
    00640   HandleTextInput(NULL, true);
    00641 }
    00642
    00643 #else
    00644
    00645 static bool DrawIMECompositionString() { return false; }
    00646 static void SetCompositionPos(HWND hwnd) {}
    00647 static void SetCandidatePos(HWND hwnd) {}
    00648 static void CancelIMEComposition(HWND hwnd) {}
    00649
    00650 #endif /* !defined(WINCE) || _WIN32_WCE >= 0x400 */
    00651
    00652 static LRESULT CALLBACK WndProcGdi(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
    00653 {
    00654   static uint32 keycode = 0;
    00655   static bool console = false;
    00656   static bool in_sizemove = false;
    00657
    00658   switch (msg) {
    00659     case WM_CREATE:
    00660       SetTimer(hwnd, TID_POLLMOUSE, MOUSE_POLL_DELAY, (TIMERPROC)TrackMouseTimerProc);
    00661       SetCompositionPos(hwnd);
    00662 #if !defined(WINCE) || _WIN32_WCE >= 0x400
    00663       _imm_props = ImmGetProperty(GetKeyboardLayout(0), IGP_PROPERTY);
    00664 #endif
    00665       break;
    00666
    00667     case WM_ENTERSIZEMOVE:
    00668       in_sizemove = true;
    00669       break;
    00670
    00671     case WM_EXITSIZEMOVE:
    00672       in_sizemove = false;
    00673       break;
    00674
    00675     case WM_PAINT:
    00676       if (!in_sizemove && _draw_mutex != NULL && !HasModalProgress()) {
    00677         /* Get the union of the old update rect and the new update rect. */
    00678         RECT r;
    00679         GetUpdateRect(hwnd, &r, FALSE);
    00680         UnionRect(&_wnd.update_rect, &_wnd.update_rect, &r);
    00681
    00682         /* Mark the window as updated, otherwise Windows would send more WM_PAINT messages. */
    00683         ValidateRect(hwnd, NULL);
    00684         _draw_mutex->SendSignal();
    00685       } else {
    00686         PAINTSTRUCT ps;
    00687
    00688         BeginPaint(hwnd, &ps);
    00689         PaintWindow(ps.hdc);
    00690         EndPaint(hwnd, &ps);
    00691       }
    00692       return 0;
    00693
    00694     case WM_PALETTECHANGED:
    00695       if ((HWND)wParam == hwnd) return 0;
    00696       /* FALL THROUGH */
    00697
    00698     case WM_QUERYNEWPALETTE: {
    00699       HDC hDC = GetWindowDC(hwnd);
    00700       HPALETTE hOldPalette = SelectPalette(hDC, _wnd.gdi_palette, FALSE);
    00701       UINT nChanged = RealizePalette(hDC);
    00702
    00703       SelectPalette(hDC, hOldPalette, TRUE);
    00704       ReleaseDC(hwnd, hDC);
    00705       if (nChanged != 0) InvalidateRect(hwnd, NULL, FALSE);
    00706       return 0;
    00707     }
    00708
    00709     case WM_CLOSE:
    00710       HandleExitGameRequest();
    00711       return 0;
    00712
    00713     case WM_DESTROY:
    00714       if (_window_maximize) _cur_resolution = _bck_resolution;
    00715       return 0;
    00716
    00717     case WM_LBUTTONDOWN:
    00718       SetCapture(hwnd);
    00719       _left_button_down = true;
    00720       HandleMouseEvents();
    00721       return 0;
    00722
    00723     case WM_LBUTTONUP:
    00724       ReleaseCapture();
    00725       _left_button_down = false;
    00726       _left_button_clicked = false;
    00727       HandleMouseEvents();
    00728       return 0;
    00729
    00730     case WM_RBUTTONDOWN:
    00731       SetCapture(hwnd);
    00732       _right_button_down = true;
    00733       _right_button_clicked = true;
    00734       HandleMouseEvents();
    00735       return 0;
    00736
    00737     case WM_RBUTTONUP:
    00738       ReleaseCapture();
    00739       _right_button_down = false;
    00740       HandleMouseEvents();
    00741       return 0;
    00742
    00743     case WM_MOUSELEAVE:
    00744       UndrawMouseCursor();
    00745       _cursor.in_window = false;
    00746
    00747       if (!_left_button_down && !_right_button_down) MyShowCursor(true);
    00748       return 0;
    00749
    00750     case WM_MOUSEMOVE: {
    00751       int x = (int16)LOWORD(lParam);
    00752       int y = (int16)HIWORD(lParam);
    00753       POINT pt;
    00754
    00755       /* If the mouse was not in the window and it has moved it means it has
    00756        * come into the window, so start drawing the mouse. Also start
    00757        * tracking the mouse for exiting the window */
    00758       if (!_cursor.in_window) {
    00759         _cursor.in_window = true;
    00760         SetTimer(hwnd, TID_POLLMOUSE, MOUSE_POLL_DELAY, (TIMERPROC)TrackMouseTimerProc);
    00761
    00762         DrawMouseCursor();
    00763       }
    00764
    00765       if (_cursor.fix_at) {
    00766         int dx = x - _cursor.pos.x;
    00767         int dy = y - _cursor.pos.y;
    00768         if (dx != 0 || dy != 0) {
    00769           _cursor.delta.x = dx;
    00770           _cursor.delta.y = dy;
    00771
    00772           pt.x = _cursor.pos.x;
    00773           pt.y = _cursor.pos.y;
    00774
    00775           ClientToScreen(hwnd, &pt);
    00776           SetCursorPos(pt.x, pt.y);
    00777         }
    00778       } else {
    00779         _cursor.delta.x = x - _cursor.pos.x;
    00780         _cursor.delta.y = y - _cursor.pos.y;
    00781         _cursor.pos.x = x;
    00782         _cursor.pos.y = y;
    00783         _cursor.dirty = true;
    00784       }
    00785       MyShowCursor(false);
    00786       HandleMouseEvents();
    00787       return 0;
    00788     }
    00789
    00790 #if !defined(WINCE) || _WIN32_WCE >= 0x400
    00791     case WM_INPUTLANGCHANGE:
    00792       _imm_props = ImmGetProperty(GetKeyboardLayout(0), IGP_PROPERTY);
    00793       break;
    00794
    00795     case WM_IME_SETCONTEXT:
    00796       /* Don't show the composition window if we draw the string ourself. */
    00797       if (DrawIMECompositionString()) lParam &= ~ISC_SHOWUICOMPOSITIONWINDOW;
    00798       break;
    00799
    00800     case WM_IME_STARTCOMPOSITION:
    00801       SetCompositionPos(hwnd);
    00802       if (DrawIMECompositionString()) return 0;
    00803       break;
    00804
    00805     case WM_IME_COMPOSITION:
    00806       return HandleIMEComposition(hwnd, wParam, lParam);
    00807
    00808     case WM_IME_ENDCOMPOSITION:
    00809       /* Clear any pending composition string. */
    00810       HandleTextInput(NULL, true);
    00811       if (DrawIMECompositionString()) return 0;
    00812       break;
    00813
    00814     case WM_IME_NOTIFY:
    00815       if (wParam == IMN_OPENCANDIDATE) SetCandidatePos(hwnd);
    00816       break;
    00817
    00818 #if !defined(UNICODE)
    00819     case WM_IME_CHAR:
    00820       if (GB(wParam, 8, 8) != 0) {
    00821         /* DBCS character, send lead byte first. */
    00822         HandleCharMsg(0, GB(wParam, 8, 8));
    00823       }
    00824       HandleCharMsg(0, GB(wParam, 0, 8));
    00825       return 0;
    00826 #endif
    00827 #endif
    00828
    00829     case WM_DEADCHAR:
    00830       console = GB(lParam, 16, 8) == 41;
    00831       return 0;
    00832
    00833     case WM_CHAR: {
    00834       uint scancode = GB(lParam, 16, 8);
    00835       uint charcode = wParam;
    00836
    00837       /* If the console key is a dead-key, we need to press it twice to get a WM_CHAR message.
    00838        * But we then get two WM_CHAR messages, so ignore the first one */
    00839       if (console && scancode == 41) {
    00840         console = false;
    00841         return 0;
    00842       }
    00843
    00844       /* IMEs and other input methods sometimes send a WM_CHAR without a WM_KEYDOWN,
    00845        * clear the keycode so a previous WM_KEYDOWN doesn't become 'stuck'. */
    00846       uint cur_keycode = keycode;
    00847       keycode = 0;
    00848
    00849       return HandleCharMsg(cur_keycode, charcode);
    00850     }
    00851
    00852     case WM_KEYDOWN: {
    00853       /* No matter the keyboard layout, we will map the '~' to the console. */
    00854       uint scancode = GB(lParam, 16, 8);
    00855       keycode = scancode == 41 ? (uint)WKC_BACKQUOTE : MapWindowsKey(wParam);
    00856
    00857       /* Silently drop all messages handled by WM_CHAR. */
    00858       MSG msg;
    00859       if (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE)) {
    00860         if ((msg.message == WM_CHAR || msg.message == WM_DEADCHAR) && GB(lParam, 16, 8) == GB(msg.lParam, 16, 8)) {
    00861           return 0;
    00862         }
    00863       }
    00864
    00865       uint charcode = MapVirtualKey(wParam, MAPVK_VK_TO_CHAR);
    00866
    00867       /* No character translation? */
    00868       if (charcode == 0) {
    00869         HandleKeypress(keycode, 0);
    00870         return 0;
    00871       }
    00872
    00873       /* Is the console key a dead key? If yes, ignore the first key down event. */
    00874       if (HasBit(charcode, 31) && !console) {
    00875         if (scancode == 41) {
    00876           console = true;
    00877           return 0;
    00878         }
    00879       }
    00880       console = false;
    00881
    00882       /* IMEs and other input methods sometimes send a WM_CHAR without a WM_KEYDOWN,
    00883        * clear the keycode so a previous WM_KEYDOWN doesn't become 'stuck'. */
    00884       uint cur_keycode = keycode;
    00885       keycode = 0;
    00886
    00887       return HandleCharMsg(cur_keycode, LOWORD(charcode));
    00888     }
    00889
    00890     case WM_SYSKEYDOWN: // user presses F10 or Alt, both activating the title-menu
    00891       switch (wParam) {
    00892         case VK_RETURN:
    00893         case 'F': // Full Screen on ALT + ENTER/F
    00894           ToggleFullScreen(!_wnd.fullscreen);
    00895           return 0;
    00896
    00897         case VK_MENU: // Just ALT
    00898           return 0; // do nothing
    00899
    00900         case VK_F10: // F10, ignore activation of menu
    00901           HandleKeypress(MapWindowsKey(wParam), 0);
    00902           return 0;
    00903
    00904         default: // ALT in combination with something else
    00905           HandleKeypress(MapWindowsKey(wParam), 0);
    00906           break;
    00907       }
    00908       break;
    00909
    00910     case WM_SIZE:
    00911       if (wParam != SIZE_MINIMIZED) {
    00912         /* Set maximized flag when we maximize (obviously), but also when we
    00913          * switched to fullscreen from a maximized state */
    00914         _window_maximize = (wParam == SIZE_MAXIMIZED || (_window_maximize && _fullscreen));
    00915         if (_window_maximize || _fullscreen) _bck_resolution = _cur_resolution;
    00916         ClientSizeChanged(LOWORD(lParam), HIWORD(lParam));
    00917       }
    00918       return 0;
    00919
    00920 #if !defined(WINCE)
    00921     case WM_SIZING: {
    00922       RECT *r = (RECT*)lParam;
    00923       RECT r2;
    00924       int w, h;
    00925
    00926       SetRect(&r2, 0, 0, 0, 0);
    00927       AdjustWindowRect(&r2, GetWindowLong(hwnd, GWL_STYLE), FALSE);
    00928
    00929       w = r->right - r->left - (r2.right - r2.left);
    00930       h = r->bottom - r->top - (r2.bottom - r2.top);
    00931       w = max(w, 64);
    00932       h = max(h, 64);
    00933       SetRect(&r2, 0, 0, w, h);
    00934
    00935       AdjustWindowRect(&r2, GetWindowLong(hwnd, GWL_STYLE), FALSE);
    00936       w = r2.right - r2.left;
    00937       h = r2.bottom - r2.top;
    00938
    00939       switch (wParam) {
    00940         case WMSZ_BOTTOM:
    00941           r->bottom = r->top + h;
    00942           break;
    00943
    00944         case WMSZ_BOTTOMLEFT:
    00945           r->bottom = r->top + h;
    00946           r->left = r->right - w;
    00947           break;
    00948
    00949         case WMSZ_BOTTOMRIGHT:
    00950           r->bottom = r->top + h;
    00951           r->right = r->left + w;
    00952           break;
    00953
    00954         case WMSZ_LEFT:
    00955           r->left = r->right - w;
    00956           break;
    00957
    00958         case WMSZ_RIGHT:
    00959           r->right = r->left + w;
    00960           break;
    00961
    00962         case WMSZ_TOP:
    00963           r->top = r->bottom - h;
    00964           break;
    00965
    00966         case WMSZ_TOPLEFT:
    00967           r->top = r->bottom - h;
    00968           r->left = r->right - w;
    00969           break;
    00970
    00971         case WMSZ_TOPRIGHT:
    00972           r->top = r->bottom - h;
    00973           r->right = r->left + w;
    00974           break;
    00975       }
    00976       return TRUE;
    00977     }
    00978 #endif
    00979
    00980 /* needed for wheel */
    00981 #if !defined(WM_MOUSEWHEEL)
    00982 # define WM_MOUSEWHEEL 0x020A
    00983 #endif  /* WM_MOUSEWHEEL */
    00984 #if !defined(GET_WHEEL_DELTA_WPARAM)
    00985 # define GET_WHEEL_DELTA_WPARAM(wparam) ((short)HIWORD(wparam))
    00986 #endif  /* GET_WHEEL_DELTA_WPARAM */
    00987
    00988     case WM_MOUSEWHEEL: {
    00989       int delta = GET_WHEEL_DELTA_WPARAM(wParam);
    00990
    00991       if (delta < 0) {
    00992         _cursor.wheel++;
    00993       } else if (delta > 0) {
    00994         _cursor.wheel--;
    00995       }
    00996       HandleMouseEvents();
    00997       return 0;
    00998     }
    00999
    01000     case WM_SETFOCUS:
    01001       _wnd.has_focus = true;
    01002       SetCompositionPos(hwnd);
    01003       break;
    01004
    01005     case WM_KILLFOCUS:
    01006       _wnd.has_focus = false;
    01007       break;
    01008
    01009 #if !defined(WINCE)
    01010     case WM_ACTIVATE: {
    01011       /* Don't do anything if we are closing openttd */
    01012       if (_exit_game) break;
    01013
    01014       bool active = (LOWORD(wParam) != WA_INACTIVE);
    01015       bool minimized = (HIWORD(wParam) != 0);
    01016       if (_wnd.fullscreen) {
    01017         if (active && minimized) {
    01018           /* Restore the game window */
    01019           ShowWindow(hwnd, SW_RESTORE);
    01020           static_cast<VideoDriver_Win32 *>(_video_driver)->MakeWindow(true);
    01021         } else if (!active && !minimized) {
    01022           /* Minimise the window and restore desktop */
    01023           ShowWindow(hwnd, SW_MINIMIZE);
    01024           ChangeDisplaySettings(NULL, 0);
    01025         }
    01026       }
    01027       break;
    01028     }
    01029 #endif
    01030   }
    01031
    01032   return DefWindowProc(hwnd, msg, wParam, lParam);
    01033 }
    01034
    01035 static void RegisterWndClass()
    01036 {
    01037   static bool registered = false;
    01038
    01039   if (!registered) {
    01040     HINSTANCE hinst = GetModuleHandle(NULL);
    01041     WNDCLASS wnd = {
    01042       CS_OWNDC,
    01043       WndProcGdi,
    01044       0,
    01045       0,
    01046       hinst,
    01047       LoadIcon(hinst, MAKEINTRESOURCE(100)),
    01048       LoadCursor(NULL, IDC_ARROW),
    01049       0,
    01050       0,
    01051       _T("OTTD")
    01052     };
    01053
    01054     registered = true;
    01055     if (!RegisterClass(&wnd)) usererror("RegisterClass failed");
    01056   }
    01057 }
    01058
    01059 static bool AllocateDibSection(int w, int h, bool force)
    01060 {
    01061   BITMAPINFO *bi;
    01062   HDC dc;
    01063   int bpp = BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth();
    01064
    01065   w = max(w, 64);
    01066   h = max(h, 64);
    01067
    01068   if (bpp == 0) usererror("Can't use a blitter that blits 0 bpp for normal visuals");
    01069
    01070   if (!force && w == _screen.width && h == _screen.height) return false;
    01071
    01072   _screen.width = w;
    01073   _screen.pitch = (bpp == 8) ? Align(w, 4) : w;
    01074   _screen.height = h;
    01075   bi = (BITMAPINFO*)alloca(sizeof(BITMAPINFOHEADER) + sizeof(RGBQUAD) * 256);
    01076   memset(bi, 0, sizeof(BITMAPINFOHEADER) + sizeof(RGBQUAD) * 256);
    01077   bi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
    01078
    01079   bi->bmiHeader.biWidth = _wnd.width = w;
    01080   bi->bmiHeader.biHeight = -(_wnd.height = h);
    01081
    01082   bi->bmiHeader.biPlanes = 1;
    01083   bi->bmiHeader.biBitCount = BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth();
    01084   bi->bmiHeader.biCompression = BI_RGB;
    01085
    01086   if (_wnd.dib_sect) DeleteObject(_wnd.dib_sect);
    01087
    01088   dc = GetDC(0);
    01089   _wnd.dib_sect = CreateDIBSection(dc, bi, DIB_RGB_COLORS, (VOID**)&_wnd.buffer_bits, NULL, 0);
    01090   if (_wnd.dib_sect == NULL) usererror("CreateDIBSection failed");
    01091   ReleaseDC(0, dc);
    01092
    01093   return true;
    01094 }
    01095
    01096 static const Dimension default_resolutions[] = {
    01097   {  640,  480 },
    01098   {  800,  600 },
    01099   { 1024,  768 },
    01100   { 1152,  864 },
    01101   { 1280,  800 },
    01102   { 1280,  960 },
    01103   { 1280, 1024 },
    01104   { 1400, 1050 },
    01105   { 1600, 1200 },
    01106   { 1680, 1050 },
    01107   { 1920, 1200 }
    01108 };
    01109
    01110 static void FindResolutions()
    01111 {
    01112   uint n = 0;
    01113 #if defined(WINCE)
    01114   /* EnumDisplaySettingsW is only supported in CE 4.2+
    01115    * XXX -- One might argue that we assume 4.2+ on every system. Then we can use this function safely */
    01116 #else
    01117   uint i;
    01118   DEVMODEA dm;
    01119
    01120   /* XXX - EnumDisplaySettingsW crashes with unicows.dll on Windows95
    01121    * Doesn't really matter since we don't pass a string anyways, but still
    01122    * a letdown */
    01123   for (i = 0; EnumDisplaySettingsA(NULL, i, &dm) != 0; i++) {
    01124     if (dm.dmBitsPerPel == BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth() &&
    01125         dm.dmPelsWidth >= 640 && dm.dmPelsHeight >= 480) {
    01126       uint j;
    01127
    01128       for (j = 0; j < n; j++) {
    01129         if (_resolutions[j].width == dm.dmPelsWidth && _resolutions[j].height == dm.dmPelsHeight) break;
    01130       }
    01131
    01132       /* In the previous loop we have checked already existing/added resolutions if
    01133        * they are the same as the new ones. If this is not the case (j == n); we have
    01134        * looped all and found none, add the new one to the list. If we have reached the
    01135        * maximum amount of resolutions, then quit querying the display */
    01136       if (j == n) {
    01137         _resolutions[j].width  = dm.dmPelsWidth;
    01138         _resolutions[j].height = dm.dmPelsHeight;
    01139         if (++n == lengthof(_resolutions)) break;
    01140       }
    01141     }
    01142   }
    01143 #endif
    01144
    01145   /* We have found no resolutions, show the default list */
    01146   if (n == 0) {
    01147     memcpy(_resolutions, default_resolutions, sizeof(default_resolutions));
    01148     n = lengthof(default_resolutions);
    01149   }
    01150
    01151   _num_resolutions = n;
    01152   SortResolutions(_num_resolutions);
    01153 }
    01154
    01155 static FVideoDriver_Win32 iFVideoDriver_Win32;
    01156
    01157 const char *VideoDriver_Win32::Start(const char * const *parm)
    01158 {
    01159   memset(&_wnd, 0, sizeof(_wnd));
    01160
    01161   RegisterWndClass();
    01162
    01163   MakePalette();
    01164
    01165   FindResolutions();
    01166
    01167   DEBUG(driver, 2, "Resolution for display: %ux%u", _cur_resolution.width, _cur_resolution.height);
    01168
    01169   /* fullscreen uses those */
    01170   _wnd.width_org  = _cur_resolution.width;
    01171   _wnd.height_org = _cur_resolution.height;
    01172
    01173   AllocateDibSection(_cur_resolution.width, _cur_resolution.height);
    01174   this->MakeWindow(_fullscreen);
    01175
    01176   MarkWholeScreenDirty();
    01177
    01178   _draw_threaded = GetDriverParam(parm, "no_threads") == NULL && GetDriverParam(parm, "no_thread") == NULL && GetCPUCoreCount() > 1;
    01179
    01180   return NULL;
    01181 }
    01182
    01183 void VideoDriver_Win32::Stop()
    01184 {
    01185   DeleteObject(_wnd.gdi_palette);
    01186   DeleteObject(_wnd.dib_sect);
    01187   DestroyWindow(_wnd.main_wnd);
    01188
    01189 #if !defined(WINCE)
    01190   if (_wnd.fullscreen) ChangeDisplaySettings(NULL, 0);
    01191 #endif
    01192   MyShowCursor(true);
    01193 }
    01194
    01195 void VideoDriver_Win32::MakeDirty(int left, int top, int width, int height)
    01196 {
    01197   RECT r = { left, top, left + width, top + height };
    01198
    01199   InvalidateRect(_wnd.main_wnd, &r, FALSE);
    01200 }
    01201
    01202 static void CheckPaletteAnim()
    01203 {
    01204   if (_cur_palette.count_dirty == 0) return;
    01205
    01206   _local_palette = _cur_palette;
    01207   InvalidateRect(_wnd.main_wnd, NULL, FALSE);
    01208 }
    01209
    01210 void VideoDriver_Win32::MainLoop()
    01211 {
    01212   MSG mesg;
    01213   uint32 cur_ticks = GetTickCount();
    01214   uint32 last_cur_ticks = cur_ticks;
    01215   uint32 next_tick = cur_ticks + MILLISECONDS_PER_TICK;
    01216
    01217   if (_draw_threaded) {
    01218     /* Initialise the mutex first, because that's the thing we *need*
    01219      * directly in the newly created thread. */
    01220     _draw_mutex = ThreadMutex::New();
    01221     if (_draw_mutex == NULL) {
    01222       _draw_threaded = false;
    01223     } else {
    01224       _draw_mutex->BeginCritical();
    01225       _draw_continue = true;
    01226
    01227       _draw_threaded = ThreadObject::New(&PaintWindowThread, NULL, &_draw_thread);
    01228
    01229       /* Free the mutex if we won't be able to use it. */
    01230       if (!_draw_threaded) {
    01231         _draw_mutex->EndCritical();
    01232         delete _draw_mutex;
    01233         _draw_mutex = NULL;
    01234       } else {
    01235         DEBUG(driver, 1, "Threaded drawing enabled");
    01236
    01237         /* Wait till the draw mutex has started itself. */
    01238         _draw_mutex->WaitForSignal();
    01239       }
    01240     }
    01241   }
    01242
    01243   _wnd.running = true;
    01244
    01245   CheckPaletteAnim();
    01246   for (;;) {
    01247     uint32 prev_cur_ticks = cur_ticks; // to check for wrapping
    01248
    01249     while (PeekMessage(&mesg, NULL, 0, 0, PM_REMOVE)) {
    01250       InteractiveRandom(); // randomness
    01251       /* Convert key messages to char messages if we want text input. */
    01252       if (EditBoxInGlobalFocus()) TranslateMessage(&mesg);
    01253       DispatchMessage(&mesg);
    01254     }
    01255     if (_exit_game) return;
    01256
    01257 #if defined(_DEBUG)
    01258     if (_wnd.has_focus && GetAsyncKeyState(VK_SHIFT) < 0 &&
    01259 #else
    01260     /* Speed up using TAB, but disable for ALT+TAB of course */
    01261     if (_wnd.has_focus && GetAsyncKeyState(VK_TAB) < 0 && GetAsyncKeyState(VK_MENU) >= 0 &&
    01262 #endif
    01263         !_networking && _game_mode != GM_MENU) {
    01264       _fast_forward |= 2;
    01265     } else if (_fast_forward & 2) {
    01266       _fast_forward = 0;
    01267     }
    01268
    01269     cur_ticks = GetTickCount();
    01270     if (cur_ticks >= next_tick || (_fast_forward && !_pause_mode) || cur_ticks < prev_cur_ticks) {
    01271       _realtime_tick += cur_ticks - last_cur_ticks;
    01272       last_cur_ticks = cur_ticks;
    01273       next_tick = cur_ticks + MILLISECONDS_PER_TICK;
    01274
    01275       bool old_ctrl_pressed = _ctrl_pressed;
    01276
    01277       _ctrl_pressed = _wnd.has_focus && GetAsyncKeyState(VK_CONTROL)<0;
    01278       _shift_pressed = _wnd.has_focus && GetAsyncKeyState(VK_SHIFT)<0;
    01279
    01280       /* determine which directional keys are down */
    01281       if (_wnd.has_focus) {
    01282         _dirkeys =
    01283           (GetAsyncKeyState(VK_LEFT) < 0 ? 1 : 0) +
    01284           (GetAsyncKeyState(VK_UP) < 0 ? 2 : 0) +
    01285           (GetAsyncKeyState(VK_RIGHT) < 0 ? 4 : 0) +
    01286           (GetAsyncKeyState(VK_DOWN) < 0 ? 8 : 0);
    01287       } else {
    01288         _dirkeys = 0;
    01289       }
    01290
    01291       if (old_ctrl_pressed != _ctrl_pressed) HandleCtrlChanged();
    01292
    01293 #if !defined(WINCE)
    01294       /* Flush GDI buffer to ensure we don't conflict with the drawing thread. */
    01295       GdiFlush();
    01296 #endif
    01297
    01298       /* The game loop is the part that can run asynchronously.
    01299        * The rest except sleeping can't. */
    01300       if (_draw_threaded) _draw_mutex->EndCritical();
    01301       GameLoop();
    01302       if (_draw_threaded) _draw_mutex->BeginCritical();
    01303
    01304       if (_force_full_redraw) MarkWholeScreenDirty();
    01305
    01306       _screen.dst_ptr = _wnd.buffer_bits;
    01307       UpdateWindows();
    01308       CheckPaletteAnim();
    01309     } else {
    01310 #if !defined(WINCE)
    01311       /* Flush GDI buffer to ensure we don't conflict with the drawing thread. */
    01312       GdiFlush();
    01313 #endif
    01314
    01315       /* Release the thread while sleeping */
    01316       if (_draw_threaded) _draw_mutex->EndCritical();
    01317       Sleep(1);
    01318       if (_draw_threaded) _draw_mutex->BeginCritical();
    01319
    01320       _screen.dst_ptr = _wnd.buffer_bits;
    01321       NetworkDrawChatMessage();
    01322       DrawMouseCursor();
    01323     }
    01324   }
    01325
    01326   if (_draw_threaded) {
    01327     _draw_continue = false;
    01328     /* Sending signal if there is no thread blocked
    01329      * is very valid and results in noop */
    01330     _draw_mutex->SendSignal();
    01331     _draw_mutex->EndCritical();
    01332     _draw_thread->Join();
    01333
    01334     delete _draw_mutex;
    01335     delete _draw_thread;
    01336   }
    01337 }
    01338
    01339 bool VideoDriver_Win32::ChangeResolution(int w, int h)
    01340 {
    01341   if (_window_maximize) ShowWindow(_wnd.main_wnd, SW_SHOWNORMAL);
    01342
    01343   _wnd.width = _wnd.width_org = w;
    01344   _wnd.height = _wnd.height_org = h;
    01345
    01346   return this->MakeWindow(_fullscreen); // _wnd.fullscreen screws up ingame resolution switching
    01347 }
    01348
    01349 bool VideoDriver_Win32::ToggleFullscreen(bool full_screen)
    01350 {
    01351   return this->MakeWindow(full_screen);
    01352 }
    01353
    01354 bool VideoDriver_Win32::AfterBlitterChange()
    01355 {
    01356   return AllocateDibSection(_screen.width, _screen.height, true) && this->MakeWindow(_fullscreen);
    01357 }
    01358
    01359 void VideoDriver_Win32::EditBoxLostFocus()
    01360 {
    01361   CancelIMEComposition(_wnd.main_wnd);
    01362   SetCompositionPos(_wnd.main_wnd);
    01363   SetCandidatePos(_wnd.main_wnd);
    01364 }