2 * Copyright 1998 Douglas Ridgway
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
25 static HINSTANCE hInst;
27 static char szAppName[5] = "View";
28 static char szTitle[80];
31 static HENHMETAFILE enhmf;
32 static int deltax = 0, deltay = 0;
33 static int width = 0, height = 0;
34 static BOOL isAldus, isEnhanced;
48 #define APMHEADER_KEY 0x9AC6CDD7l
51 static BOOL FileOpen(HWND hWnd, char *fn, int fnsz)
53 OPENFILENAME ofn = { sizeof(OPENFILENAME),
54 0, 0, NULL, NULL, 0, 0, NULL,
55 fnsz, NULL, 0, NULL, NULL,
56 OFN_SHOWHELP, 0, 0, NULL, 0, NULL };
57 ofn.lpstrFilter = "Metafiles\0*.wmf;*.emf\0";
63 return GetOpenFileName(&ofn);
66 static BOOL FileIsEnhanced( LPCSTR szFileName )
71 if( (hInFile = _lopen( szFileName, OF_READ ) ) == HFILE_ERROR )
74 if( _lread( hInFile, &enh, sizeof(ENHMETAHEADER) ) != sizeof(ENHMETAHEADER) )
82 return (enh.dSignature == ENHMETA_SIGNATURE);
85 static BOOL FileIsPlaceable( LPCSTR szFileName )
90 if( (hInFile = _lopen( szFileName, OF_READ ) ) == HFILE_ERROR )
93 if( _lread( hInFile, &apmh, sizeof(APMFILEHEADER) )
94 != sizeof(APMFILEHEADER) )
101 /* Is it placeable? */
102 return (apmh.key == APMHEADER_KEY);
105 static HMETAFILE GetPlaceableMetaFile( LPCSTR szFileName )
109 APMFILEHEADER APMHeader;
116 if( (fh = _lopen( szFileName, OF_READ ) ) == HFILE_ERROR ) return 0;
118 if (!_lread(fh, &APMHeader, sizeof(APMFILEHEADER))) return 0;
119 _llseek(fh, sizeof(APMFILEHEADER), 0);
121 p = (WORD *) &APMHeader;
125 if (checksum != APMHeader.checksum) {
127 sprintf(msg, "Computed checksum %04x != stored checksum %04x\n",
128 checksum, APMHeader.checksum);
129 MessageBox(hMainWnd, msg, "Checksum failed", MB_OK);
133 if (!_lread(fh, &mfHeader, sizeof(METAHEADER))) return 0;
135 if (!(lpData = GlobalAlloc(GPTR, (mfHeader.mtSize * 2L)))) return 0;
137 _llseek(fh, sizeof(APMFILEHEADER), 0);
138 if (!_lread(fh, lpData, (UINT)(mfHeader.mtSize * 2L)))
146 if (!(hmf = SetMetaFileBitsEx(mfHeader.mtSize*2, lpData)))
150 width = APMHeader.bbox.Right - APMHeader.bbox.Left;
151 height = APMHeader.bbox.Bottom - APMHeader.bbox.Top;
153 /* printf("Ok! width %d height %d inch %d\n", width, height, APMHeader.inch); */
154 hdc = GetDC(hMainWnd);
155 width = width * GetDeviceCaps(hdc, LOGPIXELSX)/APMHeader.inch;
156 height = height * GetDeviceCaps(hdc,LOGPIXELSY)/APMHeader.inch;
157 ReleaseDC(hMainWnd, hdc);
164 static void DoOpenFile(LPCSTR filename)
166 if (!filename) return;
168 isAldus = FileIsPlaceable(filename);
170 hmf = GetPlaceableMetaFile(filename);
173 isEnhanced = FileIsEnhanced(filename);
175 enhmf = GetEnhMetaFile(filename);
177 hmf = GetMetaFile(filename);
178 GetClientRect(hMainWnd, &r);
179 width = r.right - r.left;
180 height = r.bottom - r.top;
182 InvalidateRect( hMainWnd, NULL, TRUE );
185 static LRESULT CALLBACK WndProc(HWND hwnd, UINT uMessage, WPARAM wparam, LPARAM lparam)
192 BeginPaint(hwnd, &ps);
193 SetMapMode(ps.hdc, MM_ANISOTROPIC);
194 /* Set the window extent to a sane value in case the metafile doesn't */
195 SetWindowExtEx(ps.hdc, width, height, NULL);
196 SetViewportExtEx(ps.hdc, width, height, NULL);
197 SetViewportOrgEx(ps.hdc, deltax, deltay, NULL);
198 if (isEnhanced && enhmf)
201 GetClientRect(hwnd, &r);
202 PlayEnhMetaFile(ps.hdc, enhmf, &r);
205 PlayMetaFile(ps.hdc, hmf);
210 case WM_COMMAND: /* message: command from application menu */
211 switch (GET_WM_COMMAND_ID(wparam,lparam))
215 char filename[MAX_PATH];
216 if (FileOpen(hwnd, filename, sizeof(filename)))
217 DoOpenFile(filename);
221 case IDM_SET_EXT_TO_WIN:
224 GetClientRect(hwnd, &r);
225 width = r.right - r.left;
226 height = r.bottom - r.top;
228 InvalidateRect( hwnd, NULL, TRUE );
235 InvalidateRect( hwnd, NULL, TRUE );
239 InvalidateRect( hwnd, NULL, TRUE );
243 InvalidateRect( hwnd, NULL, TRUE );
247 InvalidateRect( hwnd, NULL, TRUE );
255 return DefWindowProc(hwnd, uMessage, wparam, lparam);
259 case WM_DESTROY: /* message: window being destroyed */
263 default: /* Passes it on if unprocessed */
264 return DefWindowProc(hwnd, uMessage, wparam, lparam);
269 static BOOL InitApplication(HINSTANCE hInstance)
273 /* Load the application description strings */
274 LoadString(hInstance, IDS_DESCRIPTION, szTitle, sizeof(szTitle));
276 /* Fill in window class structure with parameters that describe the
279 wc.cbSize = sizeof(WNDCLASSEX);
280 wc.style = CS_HREDRAW | CS_VREDRAW; /* Class style(s) */
281 wc.lpfnWndProc = WndProc; /* Window Procedure */
282 wc.cbClsExtra = 0; /* No per-class extra data */
283 wc.cbWndExtra = 0; /* No per-window extra data */
284 wc.hInstance = hInstance; /* Owner of this class */
287 wc.hCursor = LoadCursor(NULL, IDC_ARROW); /* Cursor */
288 wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1); /* Default color */
289 wc.lpszMenuName = szAppName; /* Menu name from .rc */
290 wc.lpszClassName = szAppName; /* Name to register as */
292 /* Register the window class and return FALSE if unsuccessful */
294 if (!RegisterClassEx(&wc))
296 if (!RegisterClass((LPWNDCLASS)&wc.style))
300 /* Call module specific initialization functions here */
305 static BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
307 /* Save the instance handle in a global variable for later use */
310 /* Create main window */
311 hMainWnd = CreateWindow(szAppName, /* See RegisterClass() call */
312 szTitle, /* window title */
313 WS_OVERLAPPEDWINDOW, /* Window style */
314 CW_USEDEFAULT, 0, /* positioning */
315 CW_USEDEFAULT, 0, /* size */
316 NULL, /* Overlapped has no parent */
317 NULL, /* Use the window class menu */
324 /* Call module specific instance initialization functions here */
326 /* show the window, and paint it for the first time */
327 ShowWindow(hMainWnd, nCmdShow);
328 UpdateWindow(hMainWnd);
333 static void HandleCommandLine(LPSTR cmdline)
337 /* skip white space */
338 while (*cmdline == ' ') cmdline++;
340 /* skip executable name */
341 delimiter = (*cmdline == '"' ? '"' : ' ');
343 if (*cmdline == delimiter) cmdline++;
344 while (*cmdline && *cmdline != delimiter) cmdline++;
345 if (*cmdline == delimiter) cmdline++;
349 /* file name is passed on the command line */
350 if (cmdline[0] == '"')
353 cmdline[lstrlen(cmdline) - 1] = 0;
359 int APIENTRY WinMain(HINSTANCE hInstance,
360 HINSTANCE hPrevInstance,
367 /* Other instances of app running? */
370 /* stuff to be done once */
371 if (!InitApplication(hInstance))
373 return FALSE; /* exit */
377 /* stuff to be done every time */
378 if (!InitInstance(hInstance, nCmdShow))
383 HandleCommandLine(GetCommandLine());
385 hAccelTable = LoadAccelerators(hInstance, szAppName);
388 /* Acquire and dispatch messages until a WM_QUIT message is received */
389 while (GetMessage(&msg, NULL, 0, 0))
391 /* Add other Translation functions (for modeless dialogs
392 and/or MDI windows) here. */
394 if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
396 TranslateMessage(&msg);
397 DispatchMessage(&msg);
401 /* Add module specific instance free/delete functions here */
403 /* Returns the value from PostQuitMessage */