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 #include "shellapi.h"
  31
  32 #include "main.h"
  33 #include "winclock.h"
  34
  35 #define INITIAL_WINDOW_SIZE 200
  36 #define TIMER_ID 1
  37
  38 CLOCK_GLOBALS Globals;
  39
  40 static VOID CLOCK_UpdateMenuCheckmarks(VOID)
  41 {
  42     HMENU hPropertiesMenu;
  43     hPropertiesMenu = GetSubMenu(Globals.hMainMenu, 0);
  44     if (!hPropertiesMenu)
  45         return;
  46
  47     if(Globals.bAnalog) {
  48
  49         /* analog clock */
  50         CheckMenuRadioItem(hPropertiesMenu, IDM_ANALOG, IDM_DIGITAL, IDM_ANALOG, MF_CHECKED);
  51         EnableMenuItem(hPropertiesMenu, IDM_FONT, MF_GRAYED);
  52     }
  53     else
  54     {
  55         /* digital clock */
  56         CheckMenuRadioItem(hPropertiesMenu, IDM_ANALOG, IDM_DIGITAL, IDM_DIGITAL, MF_CHECKED);
  57         EnableMenuItem(hPropertiesMenu, IDM_FONT, 0);
  58     }
  59
  60     CheckMenuItem(hPropertiesMenu, IDM_NOTITLE, (Globals.bWithoutTitle ? MF_CHECKED : MF_UNCHECKED));
  61
  62     CheckMenuItem(hPropertiesMenu, IDM_ONTOP, (Globals.bAlwaysOnTop ? MF_CHECKED : MF_UNCHECKED));
  63     CheckMenuItem(hPropertiesMenu, IDM_SECONDS, (Globals.bSeconds ? MF_CHECKED : MF_UNCHECKED));
  64     CheckMenuItem(hPropertiesMenu, IDM_DATE, (Globals.bDate ? MF_CHECKED : MF_UNCHECKED));
  65 }
  66
  67 static VOID CLOCK_UpdateWindowCaption(VOID)
  68 {
  69     WCHAR szCaption[MAX_STRING_LEN];
  70     int chars = 0;
  71
  72     /* Set frame caption */
  73     if (Globals.bDate) {
  74         chars = GetDateFormatW(LOCALE_USER_DEFAULT, DATE_LONGDATE, NULL, NULL,
  75                                szCaption, sizeof(szCaption)/sizeof(WCHAR));
  76         if (chars) {
  77             --chars;
  78             szCaption[chars++] = ' ';
  79             szCaption[chars++] = '-';
  80             szCaption[chars++] = ' ';
  81             szCaption[chars] = '\0';
  82         }
  83     }
  84     LoadStringW(0, IDS_CLOCK, szCaption + chars, MAX_STRING_LEN - chars);
  85     SetWindowTextW(Globals.hMainWnd, szCaption);
  86 }
  87
  88 /***********************************************************************
  89  *
  90  *           CLOCK_ResetTimer
  91  */
  92 static BOOL CLOCK_ResetTimer(void)
  93 {
  94     UINT period; /* milliseconds */
  95
  96     KillTimer(Globals.hMainWnd, TIMER_ID);
  97
  98     if (Globals.bSeconds)
  99         if (Globals.bAnalog)
 100             period = 50;
 101         else
 102             period = 500;
 103     else
 104         period = 1000;
 105
 106     if (!SetTimer (Globals.hMainWnd, TIMER_ID, period, NULL)) {
 107         static const WCHAR notimersW[] = {'N','o',' ','a','v','a','i','l','a','b','l','e',' ','t','i','m','e','r','s',0};
 108         WCHAR szApp[MAX_STRING_LEN];
 109         LoadStringW(Globals.hInstance, IDS_CLOCK, szApp, MAX_STRING_LEN);
 110         MessageBoxW(0, notimersW, szApp, MB_ICONEXCLAMATION | MB_OK);
 111         return FALSE;
 112     }
 113     return TRUE;
 114 }
 115
 116 /***********************************************************************
 117  *
 118  *           CLOCK_ResetFont
 119  */
 120 static VOID CLOCK_ResetFont(VOID)
 121 {
 122     HFONT newfont;
 123     HDC dc = GetDC(Globals.hMainWnd);
 124     newfont = SizeFont(dc, Globals.MaxX, Globals.MaxY, Globals.bSeconds, &Globals.logfont);
 125     if (newfont) {
 126         DeleteObject(Globals.hFont);
 127         Globals.hFont = newfont;
 128     }
 129
 130     ReleaseDC(Globals.hMainWnd, dc);
 131 }
 132
 133
 134 /***********************************************************************
 135  *
 136  *           CLOCK_ChooseFont
 137  */
 138 static VOID CLOCK_ChooseFont(VOID)
 139 {
 140     LOGFONTW lf;
 141     CHOOSEFONTW cf;
 142     memset(&cf, 0, sizeof(cf));
 143     lf = Globals.logfont;
 144     cf.lStructSize = sizeof(cf);
 145     cf.hwndOwner = Globals.hMainWnd;
 146     cf.lpLogFont = &lf;
 147     cf.Flags = CF_SCREENFONTS | CF_INITTOLOGFONTSTRUCT;
 148     if (ChooseFontW(&cf)) {
 149         Globals.logfont = lf;
 150         CLOCK_ResetFont();
 151     }
 152 }
 153
 154 /***********************************************************************
 155  *
 156  *           CLOCK_ToggleTitle
 157  */
 158 static VOID CLOCK_ToggleTitle(VOID)
 159 {
 160     /* Also shows/hides the menu */
 161     LONG style = GetWindowLongW(Globals.hMainWnd, GWL_STYLE);
 162     if ((Globals.bWithoutTitle = !Globals.bWithoutTitle)) {
 163         style = (style & ~WS_OVERLAPPEDWINDOW) | WS_POPUP|WS_THICKFRAME;
 164         SetMenu(Globals.hMainWnd, 0);
 165     }
 166     else {
 167         style = (style & ~(WS_POPUP|WS_THICKFRAME)) | WS_OVERLAPPEDWINDOW;
 168         SetMenu(Globals.hMainWnd, Globals.hMainMenu);
 169         SetWindowRgn(Globals.hMainWnd, 0, TRUE);
 170     }
 171     SetWindowLongW(Globals.hMainWnd, GWL_STYLE, style);
 172     SetWindowPos(Globals.hMainWnd, 0,0,0,0,0,
 173                  SWP_DRAWFRAME|SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER);
 174
 175     CLOCK_UpdateMenuCheckmarks();
 176     CLOCK_UpdateWindowCaption();
 177 }
 178
 179 /***********************************************************************
 180  *
 181  *           CLOCK_ToggleOnTop
 182  */
 183 static VOID CLOCK_ToggleOnTop(VOID)
 184 {
 185     if ((Globals.bAlwaysOnTop = !Globals.bAlwaysOnTop)) {
 186         SetWindowPos(Globals.hMainWnd, HWND_TOPMOST, 0,0,0,0,
 187                      SWP_NOMOVE|SWP_NOSIZE);
 188     }
 189     else {
 190         SetWindowPos(Globals.hMainWnd, HWND_NOTOPMOST, 0,0,0,0,
 191                      SWP_NOMOVE|SWP_NOSIZE);
 192     }
 193     CLOCK_UpdateMenuCheckmarks();
 194 }
 195 /***********************************************************************
 196  *
 197  *           CLOCK_MenuCommand
 198  *
 199  *  All handling of main menu events
 200  */
 201
 202 static int CLOCK_MenuCommand (WPARAM wParam)
 203 {
 204     WCHAR szApp[MAX_STRING_LEN];
 205     WCHAR szAppRelease[MAX_STRING_LEN];
 206     switch (wParam) {
 207         /* switch to analog */
 208         case IDM_ANALOG: {
 209             Globals.bAnalog = TRUE;
 210             CLOCK_UpdateMenuCheckmarks();
 211             CLOCK_ResetTimer();
 212             InvalidateRect(Globals.hMainWnd, NULL, FALSE);
 213             break;
 214         }
 215             /* switch to digital */
 216         case IDM_DIGITAL: {
 217             Globals.bAnalog = FALSE;
 218             CLOCK_UpdateMenuCheckmarks();
 219             CLOCK_ResetTimer();
 220             CLOCK_ResetFont();
 221             InvalidateRect(Globals.hMainWnd, NULL, FALSE);
 222             break;
 223         }
 224             /* change font */
 225         case IDM_FONT: {
 226             CLOCK_ChooseFont();
 227             break;
 228         }
 229             /* hide title bar */
 230         case IDM_NOTITLE: {
 231             CLOCK_ToggleTitle();
 232             break;
 233         }
 234             /* always on top */
 235         case IDM_ONTOP: {
 236             CLOCK_ToggleOnTop();
 237             break;
 238         }
 239             /* show or hide seconds */
 240         case IDM_SECONDS: {
 241             Globals.bSeconds = !Globals.bSeconds;
 242             CLOCK_UpdateMenuCheckmarks();
 243             CLOCK_ResetTimer();
 244             if (!Globals.bAnalog)
 245                 CLOCK_ResetFont();
 246             InvalidateRect(Globals.hMainWnd, NULL, FALSE);
 247             break;
 248         }
 249             /* show or hide date */
 250         case IDM_DATE: {
 251             Globals.bDate = !Globals.bDate;
 252             CLOCK_UpdateMenuCheckmarks();
 253             CLOCK_UpdateWindowCaption();
 254             break;
 255         }
 256             /* show "about" box */
 257         case IDM_ABOUT: {
 258             LoadStringW(Globals.hInstance, IDS_CLOCK, szApp, sizeof(szApp)/sizeof(WCHAR));
 259             lstrcpyW(szAppRelease,szApp);
 260             ShellAboutW(Globals.hMainWnd, szApp, szAppRelease, 0);
 261             break;
 262         }
 263     }
 264     return 0;
 265 }
 266
 267 /***********************************************************************
 268  *
 269  *           CLOCK_Paint
 270  */
 271 static VOID CLOCK_Paint(HWND hWnd)
 272 {
 273     PAINTSTRUCT ps;
 274     HDC dcMem, dc;
 275     HBITMAP bmMem, bmOld;
 276
 277     dc = BeginPaint(hWnd, &ps);
 278
 279     /* Use an offscreen dc to avoid flicker */
 280     dcMem = CreateCompatibleDC(dc);
 281     bmMem = CreateCompatibleBitmap(dc, ps.rcPaint.right - ps.rcPaint.left,
 282                                     ps.rcPaint.bottom - ps.rcPaint.top);
 283
 284     bmOld = SelectObject(dcMem, bmMem);
 285
 286     SetViewportOrgEx(dcMem, -ps.rcPaint.left, -ps.rcPaint.top, NULL);
 287     /* Erase the background */
 288     FillRect(dcMem, &ps.rcPaint, GetSysColorBrush(COLOR_3DFACE));
 289
 290     if(Globals.bAnalog)
 291         AnalogClock(dcMem, Globals.MaxX, Globals.MaxY, Globals.bSeconds, Globals.bWithoutTitle);
 292     else
 293         DigitalClock(dcMem, Globals.MaxX, Globals.MaxY, Globals.bSeconds, Globals.hFont);
 294
 295     /* Blit the changes to the screen */
 296     BitBlt(dc,
 297            ps.rcPaint.left, ps.rcPaint.top,
 298            ps.rcPaint.right - ps.rcPaint.left, ps.rcPaint.bottom - ps.rcPaint.top,
 299            dcMem,
 300            ps.rcPaint.left, ps.rcPaint.top,
 301            SRCCOPY);
 302
 303     SelectObject(dcMem, bmOld);
 304     DeleteObject(bmMem);
 305     DeleteDC(dcMem);
 306
 307     EndPaint(hWnd, &ps);
 308 }
 309
 310 /***********************************************************************
 311  *
 312  *           CLOCK_WndProc
 313  */
 314
 315 static LRESULT WINAPI CLOCK_WndProc (HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
 316 {
 317     switch (msg) {
 318         /* L button drag moves the window */
 319         case WM_NCHITTEST: {
 320             LRESULT ret = DefWindowProcW(hWnd, msg, wParam, lParam);
 321             if (ret == HTCLIENT)
 322                 ret = HTCAPTION;
 323             return ret;
 324         }
 325
 326         case WM_NCLBUTTONDBLCLK:
 327         case WM_LBUTTONDBLCLK: {
 328             CLOCK_ToggleTitle();
 329             break;
 330         }
 331
 332         case WM_PAINT: {
 333             CLOCK_Paint(hWnd);
 334             break;
 335
 336         }
 337
 338         case WM_SIZE: {
 339             Globals.MaxX = LOWORD(lParam);
 340             Globals.MaxY = HIWORD(lParam);
 341             if (Globals.bAnalog && Globals.bWithoutTitle)
 342             {
 343                 RECT rect;
 344                 INT diameter = min( Globals.MaxX, Globals.MaxY );
 345                 HRGN hrgn = CreateEllipticRgn( (Globals.MaxX - diameter) / 2,
 346                                                (Globals.MaxY - diameter) / 2,
 347                                                (Globals.MaxX + diameter) / 2,
 348                                                (Globals.MaxY + diameter) / 2 );
 349                 GetWindowRect( hWnd, &rect );
 350                 MapWindowPoints( 0, hWnd, (LPPOINT)&rect, 2 );
 351                 OffsetRgn( hrgn, -rect.left, -rect.top );
 352                 SetWindowRgn( Globals.hMainWnd, hrgn, TRUE );
 353             }
 354             CLOCK_ResetFont();
 355             break;
 356         }
 357
 358         case WM_COMMAND: {
 359             CLOCK_MenuCommand(wParam);
 360             break;
 361         }
 362
 363         case WM_TIMER: {
 364             /* Could just invalidate what has changed,
 365              * but it doesn't really seem worth the effort
 366              */
 367             InvalidateRect(Globals.hMainWnd, NULL, FALSE);
 368             break;
 369         }
 370
 371         case WM_DESTROY: {
 372             PostQuitMessage (0);
 373             break;
 374         }
 375
 376         default:
 377             return DefWindowProcW(hWnd, msg, wParam, lParam);
 378     }
 379     return 0;
 380 }
 381
 382
 383 /***********************************************************************
 384  *
 385  *           WinMain
 386  */
 387
 388 int PASCAL WinMain (HINSTANCE hInstance, HINSTANCE prev, LPSTR cmdline, int show)
 389 {
 390     MSG      msg;
 391     WNDCLASSW class;
 392
 393     static const WCHAR szClassName[] = {'C','L','C','l','a','s','s',0};
 394     static const WCHAR szWinName[]   = {'C','l','o','c','k',0};
 395
 396     /* Setup Globals */
 397     memset(&Globals.hFont, 0, sizeof (Globals.hFont));
 398     Globals.bAnalog         = TRUE;
 399     Globals.bSeconds        = TRUE;
 400
 401     if (!prev){
 402         class.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 403         class.lpfnWndProc   = CLOCK_WndProc;
 404         class.cbClsExtra    = 0;
 405         class.cbWndExtra    = 0;
 406         class.hInstance     = hInstance;
 407         class.hIcon         = LoadIconW(0, (LPCWSTR)IDI_APPLICATION);
 408         class.hCursor       = LoadCursorW(0, (LPCWSTR)IDC_ARROW);
 409         class.hbrBackground = 0;
 410         class.lpszMenuName  = 0;
 411         class.lpszClassName = szClassName;
 412     }
 413
 414     if (!RegisterClassW(&class)) return FALSE;
 415
 416     Globals.MaxX = Globals.MaxY = INITIAL_WINDOW_SIZE;
 417     Globals.hMainWnd = CreateWindowW(szClassName, szWinName, WS_OVERLAPPEDWINDOW,
 418                                      CW_USEDEFAULT, CW_USEDEFAULT,
 419                                      Globals.MaxX, Globals.MaxY, 0,
 420                                      0, hInstance, 0);
 421
 422     if (!CLOCK_ResetTimer())
 423         return FALSE;
 424
 425     Globals.hMainMenu = LoadMenuW(0, MAKEINTRESOURCEW(MAIN_MENU));
 426     SetMenu(Globals.hMainWnd, Globals.hMainMenu);
 427     CLOCK_UpdateMenuCheckmarks();
 428     CLOCK_UpdateWindowCaption();
 429
 430     ShowWindow (Globals.hMainWnd, show);
 431     UpdateWindow (Globals.hMainWnd);
 432
 433     while (GetMessageW(&msg, 0, 0, 0)) {
 434         TranslateMessage(&msg);
 435         DispatchMessageW(&msg);
 436     }
 437
 438     KillTimer(Globals.hMainWnd, TIMER_ID);
 439     DeleteObject(Globals.hFont);
 440
 441     return 0;
 442 }