programs/clock/main.c

   1 /*
   2  * Clock
   3  *
   4  * Copyright 1998 Marcel Baur <mbaur@g26.ethz.ch>
   5  *
   6  * Clock is partially based on
   7  * - Program Manager by Ulrich Schmied
   8  * - rolex.c by Jim Peterson
   9  *
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; either
  14  * version 2.1 of the License, or (at your option) any later version.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with this library; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  24  */
  25
  26 #include <stdio.h>
  27
  28 #include "windows.h"
  29 #include "commdlg.h"
  30
  31 #include "main.h"
  32 #include "winclock.h"
  33
  34 #define INITIAL_WINDOW_SIZE 200
  35 #define TIMER_ID 1
  36
  37 CLOCK_GLOBALS Globals;
  38
  39 static VOID CLOCK_UpdateMenuCheckmarks(VOID)
  40 {
  41     HMENU hPropertiesMenu;
  42     hPropertiesMenu = GetSubMenu(Globals.hMainMenu, 0);
  43     if (!hPropertiesMenu)
  44         return;
  45
  46     if(Globals.bAnalog) {
  47
  48         /* analog clock */
  49         CheckMenuRadioItem(hPropertiesMenu, IDM_ANALOG, IDM_DIGITAL, IDM_ANALOG, MF_CHECKED);
  50         EnableMenuItem(hPropertiesMenu, IDM_FONT, MF_GRAYED);
  51     }
  52     else
  53     {
  54         /* digital clock */
  55         CheckMenuRadioItem(hPropertiesMenu, IDM_ANALOG, IDM_DIGITAL, IDM_DIGITAL, MF_CHECKED);
  56         EnableMenuItem(hPropertiesMenu, IDM_FONT, 0);
  57     }
  58
  59     CheckMenuItem(hPropertiesMenu, IDM_NOTITLE, (Globals.bWithoutTitle ? MF_CHECKED : MF_UNCHECKED));
  60
  61     CheckMenuItem(hPropertiesMenu, IDM_ONTOP, (Globals.bAlwaysOnTop ? MF_CHECKED : MF_UNCHECKED));
  62     CheckMenuItem(hPropertiesMenu, IDM_SECONDS, (Globals.bSeconds ? MF_CHECKED : MF_UNCHECKED));
  63     CheckMenuItem(hPropertiesMenu, IDM_DATE, (Globals.bDate ? MF_CHECKED : MF_UNCHECKED));
  64 }
  65
  66 static VOID CLOCK_UpdateWindowCaption(VOID)
  67 {
  68     WCHAR szCaption[MAX_STRING_LEN];
  69     int chars = 0;
  70
  71     /* Set frame caption */
  72     if (Globals.bDate) {
  73         chars = GetDateFormatW(LOCALE_USER_DEFAULT, DATE_LONGDATE, NULL, NULL,
  74                                szCaption, sizeof(szCaption)/sizeof(WCHAR));
  75         if (chars) {
  76             --chars;
  77             szCaption[chars++] = ' ';
  78             szCaption[chars++] = '-';
  79             szCaption[chars++] = ' ';
  80             szCaption[chars] = '\0';
  81         }
  82     }
  83     LoadStringW(0, IDS_CLOCK, szCaption + chars, MAX_STRING_LEN - chars);
  84     SetWindowTextW(Globals.hMainWnd, szCaption);
  85 }
  86
  87 /***********************************************************************
  88  *
  89  *           CLOCK_ResetTimer
  90  */
  91 static BOOL CLOCK_ResetTimer(void)
  92 {
  93     UINT period; /* milliseconds */
  94
  95     KillTimer(Globals.hMainWnd, TIMER_ID);
  96
  97     if (Globals.bSeconds)
  98         if (Globals.bAnalog)
  99             period = 50;
 100         else
 101             period = 500;
 102     else
 103         period = 1000;
 104
 105     if (!SetTimer (Globals.hMainWnd, TIMER_ID, period, NULL)) {
 106         static const WCHAR notimersW[] = {'N','o',' ','a','v','a','i','l','a','b','l','e',' ','t','i','m','e','r','s',0};
 107         WCHAR szApp[MAX_STRING_LEN];
 108         LoadStringW(Globals.hInstance, IDS_CLOCK, szApp, MAX_STRING_LEN);
 109         MessageBoxW(0, notimersW, szApp, MB_ICONEXCLAMATION | MB_OK);
 110         return FALSE;
 111     }
 112     return TRUE;
 113 }
 114
 115 /***********************************************************************
 116  *
 117  *           CLOCK_ResetFont
 118  */
 119 static VOID CLOCK_ResetFont(VOID)
 120 {
 121     HFONT newfont;
 122     HDC dc = GetDC(Globals.hMainWnd);
 123     newfont = SizeFont(dc, Globals.MaxX, Globals.MaxY, Globals.bSeconds, &Globals.logfont);
 124     if (newfont) {
 125         DeleteObject(Globals.hFont);
 126         Globals.hFont = newfont;
 127     }
 128
 129     ReleaseDC(Globals.hMainWnd, dc);
 130 }
 131
 132
 133 /***********************************************************************
 134  *
 135  *           CLOCK_ChooseFont
 136  */
 137 static VOID CLOCK_ChooseFont(VOID)
 138 {
 139     LOGFONTW lf;
 140     CHOOSEFONTW cf;
 141     memset(&cf, 0, sizeof(cf));
 142     lf = Globals.logfont;
 143     cf.lStructSize = sizeof(cf);
 144     cf.hwndOwner = Globals.hMainWnd;
 145     cf.lpLogFont = &lf;
 146     cf.Flags = CF_SCREENFONTS | CF_INITTOLOGFONTSTRUCT;
 147     if (ChooseFontW(&cf)) {
 148         Globals.logfont = lf;
 149         CLOCK_ResetFont();
 150     }
 151 }
 152
 153 /***********************************************************************
 154  *
 155  *           CLOCK_ToggleTitle
 156  */
 157 static VOID CLOCK_ToggleTitle(VOID)
 158 {
 159     /* Also shows/hides the menu */
 160     LONG style = GetWindowLongW(Globals.hMainWnd, GWL_STYLE);
 161     if ((Globals.bWithoutTitle = !Globals.bWithoutTitle)) {
 162         style = (style & ~WS_OVERLAPPEDWINDOW) | WS_POPUP|WS_THICKFRAME;
 163         SetMenu(Globals.hMainWnd, 0);
 164     }
 165     else {
 166         style = (style & ~(WS_POPUP|WS_THICKFRAME)) | WS_OVERLAPPEDWINDOW;
 167         SetMenu(Globals.hMainWnd, Globals.hMainMenu);
 168         SetWindowRgn(Globals.hMainWnd, 0, TRUE);
 169     }
 170     SetWindowLongW(Globals.hMainWnd, GWL_STYLE, style);
 171     SetWindowPos(Globals.hMainWnd, 0,0,0,0,0,
 172                  SWP_DRAWFRAME|SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER);
 173
 174     CLOCK_UpdateMenuCheckmarks();
 175     CLOCK_UpdateWindowCaption();
 176 }
 177
 178 /***********************************************************************
 179  *
 180  *           CLOCK_ToggleOnTop
 181  */
 182 static VOID CLOCK_ToggleOnTop(VOID)
 183 {
 184     if ((Globals.bAlwaysOnTop = !Globals.bAlwaysOnTop)) {
 185         SetWindowPos(Globals.hMainWnd, HWND_TOPMOST, 0,0,0,0,
 186                      SWP_NOMOVE|SWP_NOSIZE);
 187     }
 188     else {
 189         SetWindowPos(Globals.hMainWnd, HWND_NOTOPMOST, 0,0,0,0,
 190                      SWP_NOMOVE|SWP_NOSIZE);
 191     }
 192     CLOCK_UpdateMenuCheckmarks();
 193 }
 194 /***********************************************************************
 195  *
 196  *           CLOCK_MenuCommand
 197  *
 198  *  All handling of main menu events
 199  */
 200
 201 static int CLOCK_MenuCommand (WPARAM wParam)
 202 {
 203     WCHAR szApp[MAX_STRING_LEN];
 204     WCHAR szAppRelease[MAX_STRING_LEN];
 205     switch (wParam) {
 206         /* switch to analog */
 207         case IDM_ANALOG: {
 208             Globals.bAnalog = TRUE;
 209             CLOCK_UpdateMenuCheckmarks();
 210             CLOCK_ResetTimer();
 211             InvalidateRect(Globals.hMainWnd, NULL, FALSE);
 212             break;
 213         }
 214             /* switch to digital */
 215         case IDM_DIGITAL: {
 216             Globals.bAnalog = FALSE;
 217             CLOCK_UpdateMenuCheckmarks();
 218             CLOCK_ResetTimer();
 219             CLOCK_ResetFont();
 220             InvalidateRect(Globals.hMainWnd, NULL, FALSE);
 221             break;
 222         }
 223             /* change font */
 224         case IDM_FONT: {
 225             CLOCK_ChooseFont();
 226             break;
 227         }
 228             /* hide title bar */
 229         case IDM_NOTITLE: {
 230             CLOCK_ToggleTitle();
 231             break;
 232         }
 233             /* always on top */
 234         case IDM_ONTOP: {
 235             CLOCK_ToggleOnTop();
 236             break;
 237         }
 238             /* show or hide seconds */
 239         case IDM_SECONDS: {
 240             Globals.bSeconds = !Globals.bSeconds;
 241             CLOCK_UpdateMenuCheckmarks();
 242             CLOCK_ResetTimer();
 243             if (!Globals.bAnalog)
 244                 CLOCK_ResetFont();
 245             InvalidateRect(Globals.hMainWnd, NULL, FALSE);
 246             break;
 247         }
 248             /* show or hide date */
 249         case IDM_DATE: {
 250             Globals.bDate = !Globals.bDate;
 251             CLOCK_UpdateMenuCheckmarks();
 252             CLOCK_UpdateWindowCaption();
 253             break;
 254         }
 255             /* show "about" box */
 256         case IDM_ABOUT: {
 257             LoadStringW(Globals.hInstance, IDS_CLOCK, szApp, sizeof(szApp)/sizeof(WCHAR));
 258             lstrcpyW(szAppRelease,szApp);
 259             ShellAboutW(Globals.hMainWnd, szApp, szAppRelease, 0);
 260             break;
 261         }
 262     }
 263     return 0;
 264 }
 265
 266 /***********************************************************************
 267  *
 268  *           CLOCK_Paint
 269  */
 270 static VOID CLOCK_Paint(HWND hWnd)
 271 {
 272     PAINTSTRUCT ps;
 273     HDC dcMem, dc;
 274     HBITMAP bmMem, bmOld;
 275
 276     dc = BeginPaint(hWnd, &ps);
 277
 278     /* Use an offscreen dc to avoid flicker */
 279     dcMem = CreateCompatibleDC(dc);
 280     bmMem = CreateCompatibleBitmap(dc, ps.rcPaint.right - ps.rcPaint.left,
 281                                     ps.rcPaint.bottom - ps.rcPaint.top);
 282
 283     bmOld = SelectObject(dcMem, bmMem);
 284
 285     SetViewportOrgEx(dcMem, -ps.rcPaint.left, -ps.rcPaint.top, NULL);
 286     /* Erase the background */
 287     FillRect(dcMem, &ps.rcPaint, GetSysColorBrush(COLOR_3DFACE));
 288
 289     if(Globals.bAnalog)
 290         AnalogClock(dcMem, Globals.MaxX, Globals.MaxY, Globals.bSeconds, Globals.bWithoutTitle);
 291     else
 292         DigitalClock(dcMem, Globals.MaxX, Globals.MaxY, Globals.bSeconds, Globals.hFont);
 293
 294     /* Blit the changes to the screen */
 295     BitBlt(dc,
 296            ps.rcPaint.left, ps.rcPaint.top,
 297            ps.rcPaint.right - ps.rcPaint.left, ps.rcPaint.bottom - ps.rcPaint.top,
 298            dcMem,
 299            ps.rcPaint.left, ps.rcPaint.top,
 300            SRCCOPY);
 301
 302     SelectObject(dcMem, bmOld);
 303     DeleteObject(bmMem);
 304     DeleteDC(dcMem);
 305
 306     EndPaint(hWnd, &ps);
 307 }
 308
 309 /***********************************************************************
 310  *
 311  *           CLOCK_WndProc
 312  */
 313
 314 static LRESULT WINAPI CLOCK_WndProc (HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
 315 {
 316     switch (msg) {
 317         /* L button drag moves the window */
 318         case WM_NCHITTEST: {
 319             LRESULT ret = DefWindowProcW(hWnd, msg, wParam, lParam);
 320             if (ret == HTCLIENT)
 321                 ret = HTCAPTION;
 322             return ret;
 323         }
 324
 325         case WM_NCLBUTTONDBLCLK:
 326         case WM_LBUTTONDBLCLK: {
 327             CLOCK_ToggleTitle();
 328             break;
 329         }
 330
 331         case WM_PAINT: {
 332             CLOCK_Paint(hWnd);
 333             break;
 334
 335         }
 336
 337         case WM_SIZE: {
 338             Globals.MaxX = LOWORD(lParam);
 339             Globals.MaxY = HIWORD(lParam);
 340             if (Globals.bAnalog && Globals.bWithoutTitle)
 341             {
 342                 RECT rect;
 343                 INT diameter = min( Globals.MaxX, Globals.MaxY );
 344                 HRGN hrgn = CreateEllipticRgn( (Globals.MaxX - diameter) / 2,
 345                                                (Globals.MaxY - diameter) / 2,
 346                                                (Globals.MaxX + diameter) / 2,
 347                                                (Globals.MaxY + diameter) / 2 );
 348                 GetWindowRect( hWnd, &rect );
 349                 MapWindowPoints( 0, hWnd, (LPPOINT)&rect, 2 );
 350                 OffsetRgn( hrgn, -rect.left, -rect.top );
 351                 SetWindowRgn( Globals.hMainWnd, hrgn, TRUE );
 352             }
 353             CLOCK_ResetFont();
 354             break;
 355         }
 356
 357         case WM_COMMAND: {
 358             CLOCK_MenuCommand(wParam);
 359             break;
 360         }
 361
 362         case WM_TIMER: {
 363             /* Could just invalidate what has changed,
 364              * but it doesn't really seem worth the effort
 365              */
 366             InvalidateRect(Globals.hMainWnd, NULL, FALSE);
 367             break;
 368         }
 369
 370         case WM_DESTROY: {
 371             PostQuitMessage (0);
 372             break;
 373         }
 374
 375         default:
 376             return DefWindowProcW(hWnd, msg, wParam, lParam);
 377     }
 378     return 0;
 379 }
 380
 381
 382 /***********************************************************************
 383  *
 384  *           WinMain
 385  */
 386
 387 int PASCAL WinMain (HINSTANCE hInstance, HINSTANCE prev, LPSTR cmdline, int show)
 388 {
 389     MSG      msg;
 390     WNDCLASSW class;
 391
 392     static const WCHAR szClassName[] = {'C','L','C','l','a','s','s',0};
 393     static const WCHAR szWinName[]   = {'C','l','o','c','k',0};
 394
 395     /* Setup Globals */
 396     memset(&Globals.hFont, 0, sizeof (Globals.hFont));
 397     Globals.bAnalog         = TRUE;
 398     Globals.bSeconds        = TRUE;
 399
 400     if (!prev){
 401         class.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 402         class.lpfnWndProc   = CLOCK_WndProc;
 403         class.cbClsExtra    = 0;
 404         class.cbWndExtra    = 0;
 405         class.hInstance     = hInstance;
 406         class.hIcon         = LoadIconW(0, (LPCWSTR)IDI_APPLICATION);
 407         class.hCursor       = LoadCursorW(0, (LPCWSTR)IDC_ARROW);
 408         class.hbrBackground = 0;
 409         class.lpszMenuName  = 0;
 410         class.lpszClassName = szClassName;
 411     }
 412
 413     if (!RegisterClassW(&class)) return FALSE;
 414
 415     Globals.MaxX = Globals.MaxY = INITIAL_WINDOW_SIZE;
 416     Globals.hMainWnd = CreateWindowW(szClassName, szWinName, WS_OVERLAPPEDWINDOW,
 417                                      CW_USEDEFAULT, CW_USEDEFAULT,
 418                                      Globals.MaxX, Globals.MaxY, 0,
 419                                      0, hInstance, 0);
 420
 421     if (!CLOCK_ResetTimer())
 422         return FALSE;
 423
 424     Globals.hMainMenu = LoadMenuW(0, MAKEINTRESOURCEW(MAIN_MENU));
 425     SetMenu(Globals.hMainWnd, Globals.hMainMenu);
 426     CLOCK_UpdateMenuCheckmarks();
 427     CLOCK_UpdateWindowCaption();
 428
 429     ShowWindow (Globals.hMainWnd, show);
 430     UpdateWindow (Globals.hMainWnd);
 431
 432     while (GetMessageW(&msg, 0, 0, 0)) {
 433         TranslateMessage(&msg);
 434         DispatchMessageW(&msg);
 435     }
 436
 437     KillTimer(Globals.hMainWnd, TIMER_ID);
 438     DeleteObject(Globals.hFont);
 439
 440     return 0;
 441 }