source: trunk/classes/mm-progs/mmfind/image.c@ 4

Last change on this file since 4 was 4, checked in by stevenhl, 8 years ago

Import modifications from cwmm-0_2_9-work-01_10_2006.zip dated 2006-08-27
File size: 11.4 KB
Line 
1
2#define INCL_OS2MM
3#define INCL_MMIOOS2
4#define INCL_GPI
5
6#include <os2.h>
7#include "os2me.h"
8#include "common.h"
9#include "mmres.h"
10
11extern HAB globalHab;
12extern BITMAPINFOHEADER2 bmpInfoHeader2;
13extern HBITMAP hBitmap;
14
15void showImageControls(HWND hwnd, BOOL bShow)
16{
17 /* Preview area */
18 WinShowWindow(WinWindowFromID(hwnd, IDSR_IMGPREVIEW), bShow);
19 /* Group box */
20 WinShowWindow(WinWindowFromID(hwnd, IDGB_PREVIEW), bShow);
21}
22
23VOID DrawBitmap ( HWND hwnd )
24{
25 SWP swp;
26 POINTL aptl[4];
27 HPS hps;
28 BOOL bReturnCode;
29 ULONG ulHeight;
30 ULONG ulWidth;
31 RECTL rectl;
32
33 hps = WinBeginPaint ( hwnd,
34 0,
35 NULL);
36 /*
37 * Get position of image frame
38 */
39 bReturnCode = WinQueryWindowPos ( hwnd, &swp);
40
41 WinQueryWindowRect(hwnd, &rectl);
42 WinFillRect(hps, &rectl, CLR_WHITE);
43 /* Center image */
44 ulHeight = bmpInfoHeader2.cy;
45 ulWidth = bmpInfoHeader2.cx;
46 if(ulWidth <=swp.cx && ulHeight <= swp.cy)
47 {
48 aptl[0].x=(swp.cx-ulWidth)/2;
49 aptl[1].x=aptl[0].x+ulWidth;
50
51 aptl[0].y=(swp.cy-ulHeight)/2;
52 aptl[1].y=aptl[0].y+ulHeight;
53 }
54 else {
55 float fWidth, fHeight, fRes;
56
57 fWidth=(float)swp.cx/(float)ulWidth;
58 fHeight=(float)swp.cy/(float)ulHeight;
59 fRes=( fWidth>fHeight ? fHeight : fWidth);
60
61
62 aptl[0].x=(swp.cx-ulWidth*fRes)/2;
63 aptl[1].x=aptl[0].x+ulWidth*fRes;
64
65 aptl[0].y=(swp.cy-ulHeight*fRes)/2;
66 aptl[1].y=aptl[0].y+ulHeight*fRes;
67 }
68
69 aptl[2].x = 0; // source lower left
70 aptl[2].y = 0;
71
72 aptl[3].x = ulWidth; // source upper right
73 aptl[3].y = ulHeight;
74
75 /*
76 * Call GpiBitBlt and supply 4 aptl structures. This tells
77 * it to stretch or compress the bitmap depending on what is
78 * in the aptl structures. See above lines for their current
79 * settings.
80 */
81
82 WinDrawBitmap(hps, hBitmap, NULLHANDLE, (PPOINTL)aptl, 0, 0, DBM_NORMAL|DBM_STRETCH);
83
84#if 0
85 aptl[0].x=0;
86 aptl[0].y=0;
87 //aptl[1].x=100;
88 //aptl[1].y=100;
89 // WinDrawBitmap(hps, hBitmap, NULLHANDLE, (PPOINTL)aptl, 0, 0, DBM_NORMAL/*|DBM_STRETCH*/);
90#endif
91 bReturnCode = WinEndPaint (hps);
92}
93
94MRESULT EXPENTRY bmpPreviewProc(HWND hwnd, ULONG msg, MPARAM mp1, MPARAM mp2)
95{
96
97 switch (msg)
98 {
99 case WM_PAINT:
100 {
101 if (!WinIsWindowVisible(hwnd))
102 {
103 return((MRESULT)NULL);
104 }
105 DrawBitmap(hwnd);
106 return MRTRUE;
107 }
108 default:
109 break;
110 }
111 return WinDefWindowProc( hwnd, msg, mp1, mp2);
112}
113
114
115#if 0
116/*
117 Load an image file using IO-Procs
118 */
119HBITMAP loadBitmap ( PSZ pszFileName, PBITMAPINFOHEADER2 pBMPInfoHeader2)
120{
121 HBITMAP hbm;
122 MMIOINFO mmioinfo;
123 MMFORMATINFO mmFormatInfo;
124 HMMIO hmmio;
125 ULONG ulImageHeaderLength;
126 MMIMAGEHEADER mmImgHdr;
127 ULONG ulBytesRead;
128 ULONG dwNumRowBytes;
129 PBYTE pRowBuffer;
130 ULONG dwRowCount;
131 SIZEL ImageSize;
132 ULONG dwHeight, dwWidth;
133 SHORT wBitCount;
134 FOURCC fccStorageSystem;
135 ULONG dwPadBytes;
136 ULONG dwRowBits;
137 ULONG ulReturnCode;
138 ULONG dwReturnCode;
139 HBITMAP hbReturnCode;
140 LONG lReturnCode;
141 FOURCC fccIOProc;
142 HDC hdc;
143 HPS hps;
144
145
146 ulReturnCode = mmioIdentifyFile ( pszFileName,
147 0L,
148 &mmFormatInfo,
149 &fccStorageSystem,
150 0L,
151 0L);
152 /*
153 * If this file was NOT identified, then this function won't
154 * work, so return an error by indicating an empty bitmap.
155 */
156 if ( ulReturnCode == MMIO_ERROR )
157 {
158 // showMsgBox(IDSTR_CWIMAGETITLE, IDSTR_NOIMGIOPROCERROR, queryModuleHandle());
159 return (0L);
160 }
161
162 /*
163 * If mmioIdentifyFile did not find a custom-written IO proc which
164 * can understand the image file, then it will return the DOS IO Proc
165 * info because the image file IS a DOS file.
166 */
167 if( mmFormatInfo.fccIOProc == FOURCC_DOS )
168 {
169 // showMsgBox(IDSTR_CWIMAGETITLE, IDSTR_NOIMGIOPROCERROR, queryModuleHandle());
170 return ( 0L );
171 }
172 /*
173 * Ensure this is an IMAGE IOproc, and that it can read
174 * translated data
175 */
176 if ( (mmFormatInfo.ulMediaType != MMIO_MEDIATYPE_IMAGE) ||
177 ((mmFormatInfo.ulFlags & MMIO_CANREADTRANSLATED) == 0) )
178 {
179 // showMsgBox(IDSTR_CWIMAGETITLE, IDSTR_NOIMGIOPROCERROR, queryModuleHandle());
180 return (0L);
181 }
182 else
183 {
184 fccIOProc = mmFormatInfo.fccIOProc;
185 }
186
187 /* Clear out and initialize mminfo structure */
188 memset ( &mmioinfo, 0L, sizeof ( MMIOINFO ) );
189 mmioinfo.fccIOProc = fccIOProc;
190 mmioinfo.ulTranslate = MMIO_TRANSLATEHEADER | MMIO_TRANSLATEDATA;
191 hmmio = mmioOpen ( (PSZ) pszFileName,
192 &mmioinfo,
193 MMIO_READ | MMIO_DENYWRITE | MMIO_NOIDENTIFY );
194 if ( ! hmmio )
195 {
196 // If file could not be opened, return with error
197 // showMsgBox(IDSTR_CWIMAGETITLE, IDSTR_OPENFILEERROR, queryModuleHandle());
198 return (0L);
199 }
200
201
202 dwReturnCode = mmioQueryHeaderLength ( hmmio,
203 (PLONG)&ulImageHeaderLength,
204 0L,
205 0L);
206 if ( ulImageHeaderLength != sizeof ( MMIMAGEHEADER ) )
207 {
208 /* We have a problem.....possibly incompatible versions */
209 ulReturnCode = mmioClose (hmmio, 0L);
210 // showMsgBox(IDSTR_CWIMAGETITLE, IDSTR_NOIMGIOPROCERROR);
211 return (0L);
212 }
213
214 ulReturnCode = mmioGetHeader ( hmmio,
215 &mmImgHdr,
216 (LONG) sizeof ( MMIMAGEHEADER ),
217 (PLONG)&ulBytesRead,
218 0L,
219 0L);
220
221 if ( ulReturnCode != MMIO_SUCCESS )
222 {
223 /* Header unavailable */
224 ulReturnCode = mmioClose (hmmio, 0L);
225 return (0L);
226 }
227
228 /*!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*/
229 *pBMPInfoHeader2=mmImgHdr.mmXDIBHeader.BMPInfoHeader2;
230
231 /*
232 * Determine the number of bytes required, per row.
233 * PLANES MUST ALWAYS BE = 1
234 */
235 dwHeight = mmImgHdr.mmXDIBHeader.BMPInfoHeader2.cy;
236 dwWidth = mmImgHdr.mmXDIBHeader.BMPInfoHeader2.cx;
237 wBitCount = mmImgHdr.mmXDIBHeader.BMPInfoHeader2.cBitCount;
238 dwRowBits = dwWidth * mmImgHdr.mmXDIBHeader.BMPInfoHeader2.cBitCount;
239 dwNumRowBytes = dwRowBits >> 3;
240
241 /*
242 * Account for odd bits used in 1bpp or 4bpp images that are
243 * NOT on byte boundaries.
244 */
245 if ( dwRowBits % 8 )
246 {
247 dwNumRowBytes++;
248 }
249 /*
250 * Ensure the row length in bytes accounts for byte padding.
251 * All bitmap data rows must are aligned on LONG/4-BYTE boundaries.
252 * The data FROM an IOProc should always appear in this form.
253 */
254 dwPadBytes = ( dwNumRowBytes % 4 );
255 if ( dwPadBytes )
256 {
257 dwNumRowBytes += 4 - dwPadBytes;
258 }
259
260 /* Allocate space for ONE row of pels */
261 if ( DosAllocMem( (PPVOID)&pRowBuffer,
262 (ULONG)dwNumRowBytes,
263 fALLOC))
264 {
265 ulReturnCode = mmioClose (hmmio, 0L);
266 // showMsgBox(IDSTR_CWIMAGETITLE, IDSTR_NOMEMERROR, queryModuleHandle());
267 return(0L);
268 }
269
270 /* Create a device context */
271 hdc=DevOpenDC(globalHab, OD_MEMORY,"*",0L, NULL, NULLHANDLE);
272 if(hdc==NULLHANDLE)
273 {
274 DosFreeMem(pRowBuffer);
275 mmioClose (hmmio, 0L);
276 return(0L);
277 }
278
279
280 // ***************************************************
281 // Create a memory presentation space that includes
282 // the memory device context obtained above.
283 // ***************************************************
284
285 ImageSize.cx = dwWidth;
286 ImageSize.cy = dwHeight;
287
288 hps = GpiCreatePS ( globalHab,
289 hdc,
290 &ImageSize,
291 PU_PELS | GPIT_NORMAL | GPIA_ASSOC );
292 // PU_PELS | GPIF_DEFAULT | GPIT_MICRO | GPIA_ASSOC );
293 if ( !hps )
294 {
295#ifdef DEBUG
296 WinMessageBox( HWND_DESKTOP, HWND_DESKTOP,
297 "No HPS...",
298 "Open Image File",
299 (HMODULE) NULL,
300 (ULONG) MB_OK | MB_MOVEABLE |
301 MB_ERROR );
302#endif
303 DevCloseDC(hdc);
304 DosFreeMem(pRowBuffer);
305 mmioClose (hmmio, 0L);
306 return(0L);
307 }
308
309 // GpiSelectPalette(hps, NULLHANDLE);
310 // ***************************************************
311 // Create an uninitialized bitmap. This is where we
312 // will put all of the bits once we read them in.
313 // ***************************************************
314 hbm = GpiCreateBitmap ( hps,
315 pBMPInfoHeader2,
316 0L,
317 NULL,
318 NULL);
319
320 if ( !hbm )
321 {
322#ifdef DEBUG
323 WinMessageBox( HWND_DESKTOP, HWND_DESKTOP,
324 "No HBITMAP...",
325 "Open Image File",
326 (HMODULE) NULL,
327 (ULONG) MB_OK | MB_MOVEABLE |
328 MB_ERROR );
329#endif
330 GpiDestroyPS(hps);
331 DevCloseDC(hdc);
332 DosFreeMem(pRowBuffer);
333 ulReturnCode = mmioClose (hmmio, 0L);
334 return(0L);
335 }
336
337 // ***************************************************
338 // Select the bitmap into the memory device context.
339 // ***************************************************
340 hbReturnCode = GpiSetBitmap ( hps,
341 hbm );
342
343 //***************************************************************
344 // LOAD THE BITMAP DATA FROM THE FILE
345 // One line at a time, starting from the BOTTOM
346 //*************************************************************** */
347
348 for ( dwRowCount = 0; dwRowCount < dwHeight; dwRowCount++ )
349 {
350 ulBytesRead = (ULONG) mmioRead ( hmmio,
351 pRowBuffer,
352 dwNumRowBytes );
353 if ( !ulBytesRead )
354 {
355 break;
356 }
357 /*
358 * Allow context switching while previewing.. Couldn't get
359 * it to work. Perhaps will get to it when time is available...
360 */
361 lReturnCode = GpiSetBitmapBits ( hps,
362 (LONG) dwRowCount,
363 (LONG) 1,
364 (PBYTE) pRowBuffer,
365 (PBITMAPINFO2) pBMPInfoHeader2);
366 }
367
368 /* Clean up */
369 hbReturnCode = GpiSetBitmap ( hps,
370 NULLHANDLE );
371 ulReturnCode = mmioClose (hmmio, 0L);
372 DosFreeMem(pRowBuffer);
373 GpiDestroyPS(hps);
374 DevCloseDC(hdc);
375
376 return(hbm);
377}
378#endif
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