source: trunk/src/gdi32/ft2supp.cpp@ 10423

Last change on this file since 10423 was 10403, checked in by sandervl, 22 years ago

comment fix
File size: 18.2 KB
Line 
1/*
2 * GDI32 FreeType2 Support Class
3 *
4 * Copyright 2003 Innotek Systemberatung GmbH (sandervl@innotek.de)
5 * (stauff@innotek.de)
6 *
7 * Project Odin Software License can be found in LICENSE.TXT
8 *
9 */
10
11/*****************************************************************************
12 * Includes *
13 *****************************************************************************/
14
15#define INCL_DOS
16#define INCL_GPI
17#define INCL_WIN
18#define INCL_SHLERRORS
19#define INCL_WINERRORS
20#include <os2wrap.h> //Odin32 OS/2 api wrappers
21#include <stdlib.h>
22#include <string.h>
23#include <win32type.h>
24#include <dbglog.h>
25#include <win32api.h>
26#include <winconst.h>
27#include <winnls.h>
28#include <heapstring.h>
29#include <winuser32.h>
30#include <odinlx.h>
31#include "oslibgpi.h"
32
33#include "ft2supp.h"
34
35CFT2Module FT2Module;
36
37static BOOL fFT2LIBIntegration = FALSE;
38
39//******************************************************************************
40//******************************************************************************
41void WIN32API SetFreeTypeIntegration(BOOL fEnabled)
42{
43 fFT2LIBIntegration = fEnabled;
44
45 FT2Module.init();
46}
47//******************************************************************************
48// Constructor
49//******************************************************************************
50CFT2Module::CFT2Module(char* sModuleName): bEnabled(FALSE), hftModule(0), pfnGetGlyphIndices(NULL),
51 pfnFt2GetTextExtentW(NULL), pfnFt2EnableFontEngine(NULL),
52 pfnFt2GetGlyphOutline(NULL), pfnFt2CharStringPosAtA(NULL),
53 pfnFt2CharStringPosAtW(NULL), pfnFt2GetFontData(NULL),
54 pfnFt2RegisterUconv(NULL), pfnFt2QueryStringWidthW(NULL),
55 pfnFt2GetVersion(NULL)
56{
57 pszModuleName = sModuleName; //must be static
58}
59//******************************************************************************
60//******************************************************************************
61void CFT2Module::init()
62{
63 APIRET rc;
64 UCHAR Loaderror[ 256 ];
65 LONG major = 0, minor = 0, buildnr = 0;
66
67 if(!fFT2LIBIntegration) {
68 dprintf(("No FT2LIB integration!!"));
69 goto failure;
70 }
71
72 rc = DosLoadModule((PSZ)Loaderror, sizeof(Loaderror), pszModuleName, &hftModule);
73 if (rc != 0)
74 dprintf(("Freetype2 library load error: return code = %u\n", rc));
75 else
76 bEnabled = TRUE;
77
78 if(bEnabled) {
79 pfnFt2GetVersion = (PFN_FT2GETVERSION)QueryProcAddress("Ft2GetVersion");
80 if(!pfnFt2GetVersion) {
81 dprintf(("Ft2GetVersion not found!!"));
82 goto failure;
83 }
84 pfnFt2GetVersion(&major, &minor, &buildnr);
85 if(major != FT2LIB_MAJOR_VERSION) {
86 dprintf(("Incorrect major version %d; expected %d!!", major, FT2LIB_MAJOR_VERSION));
87 goto failure;
88 }
89 if(minor < FT2LIB_MINOR_VERSION) {
90 dprintf(("Incorrect minor version %d; expected >= %d!!", minor, FT2LIB_MINOR_VERSION));
91 goto failure;
92 }
93
94 pfnFt2EnableFontEngine = (PFN_FT2ENABLEFONTENGINE)QueryProcAddress("Ft2EnableFontEngine");
95 if(!pfnFt2EnableFontEngine) dprintf(("Ft2EnableFontEngine not found!!"));
96 else pfnFt2EnableFontEngine(bEnabled);
97
98 pfnFt2GetTextExtentW = (PFN_FT2GETTEXTEXTENTW)QueryProcAddress("Ft2GetTextExtentW");
99 if(!pfnFt2GetTextExtentW) dprintf(("Ft2GetTextExtentW not found!!"));
100
101 pfnFt2CharStringPosAtA = (PFN_FT2CHARSTRINGPOSATA)QueryProcAddress("Ft2CharStringPosAtA");
102 if(!pfnFt2CharStringPosAtA) dprintf(("Ft2CharStringPosAtA not found!!"));
103 pfnFt2CharStringPosAtW = (PFN_FT2CHARSTRINGPOSATW)QueryProcAddress("Ft2CharStringPosAtW");
104 if(!pfnFt2CharStringPosAtW) dprintf(("Ft2CharStringPosAtW not found!!"));
105
106 pfnFt2QueryFontType = (PFN_FT2QUERYFONTTYPE)QueryProcAddress("Ft2QueryFontType");
107 if(!pfnFt2QueryFontType) dprintf(("Ft2QueryFontType not found!!"));
108
109 pfnFt2QueryStringWidthW = (PFN_FT2QUERYSTRINGWIDTHW)QueryProcAddress("Ft2QueryStringWidthW");
110 if(!pfnFt2QueryStringWidthW) dprintf(("Ft2QueryStringWidthW not found!!"));
111
112 // Do not register functions for Mozilla plugins
113 if(IsDummyExeLoaded() == FALSE)
114 {
115 pfnFt2RegisterUconv = (PFN_FT2REGISTERUCONV)QueryProcAddress("Ft2RegisterUconv");
116 if(pfnFt2RegisterUconv)
117 pfnFt2RegisterUconv(WideCharToMultiByte, MultiByteToWideChar);
118 else dprintf(("Ft2QueryFontType not found!!"));
119 }
120 dprintf(("Freetype2 library enabled state %d",bEnabled));
121 }
122 return;
123
124failure:
125 if(pfnFt2RegisterUconv)
126 pfnFt2RegisterUconv(NULL, NULL);
127 if(pfnFt2EnableFontEngine)
128 pfnFt2EnableFontEngine(FALSE);
129
130 pfnGetGlyphIndices = NULL;
131 pfnFt2GetTextExtentW = NULL;
132 pfnFt2EnableFontEngine = NULL;
133 pfnFt2GetGlyphOutline = NULL;
134 pfnFt2CharStringPosAtA = NULL;
135 pfnFt2CharStringPosAtW = NULL;
136 pfnFt2GetFontData = NULL;
137 pfnFt2RegisterUconv = NULL;
138 pfnFt2QueryStringWidthW= NULL;
139 pfnFt2GetVersion = NULL;
140 bEnabled = FALSE;
141 if (hftModule) {
142 DosFreeModule(hftModule);
143 hftModule = 0;
144 }
145 return;
146}
147//******************************************************************************
148// Destructor
149//******************************************************************************
150CFT2Module::~CFT2Module()
151{
152 if (hftModule)
153 DosFreeModule(hftModule);
154
155 bEnabled = FALSE;
156}
157//******************************************************************************
158//******************************************************************************
159PFN CFT2Module::QueryProcAddress(int ordinal)
160{
161 APIRET rc;
162 PFN ModuleAddr;
163
164 rc = DosQueryProcAddr(hftModule, ordinal, NULL, &ModuleAddr);
165 if (rc != 0) {
166 dprintf(("FreeType2 QueryProcAddr error: return code = %u\n", rc));
167 return 0;
168 }
169 return ModuleAddr;
170}
171//******************************************************************************
172//******************************************************************************
173PFN CFT2Module::QueryProcAddress(char * procname)
174{
175 APIRET rc;
176 PFN ModuleAddr;
177
178 rc = DosQueryProcAddr(hftModule, 0, procname, &ModuleAddr);
179 if (rc != 0) {
180 dprintf(("FreeType2 QueryProcAddr error: return code = %u\n", rc));
181 return 0;
182 }
183 return ModuleAddr;
184}
185//******************************************************************************
186//******************************************************************************
187DWORD CFT2Module::Ft2GetGlyphIndices(HPS hps, LPCWSTR str, int c, LPWORD pgi, DWORD fl)
188{
189 //no fallback
190 SetLastError(ERROR_CALL_NOT_IMPLEMENTED_W);
191 return GDI_ERROR;
192}
193//******************************************************************************
194//******************************************************************************
195DWORD CFT2Module::Ft2GetGlyphOutline(HPS hps, UINT glyph, UINT format, LPGLYPHMETRICS lpgm, DWORD buflen, LPVOID buf, const MAT2* lpmat)
196{
197 //no fallback
198 SetLastError(ERROR_INVALID_FUNCTION_W);
199 return GDI_ERROR;
200}
201//******************************************************************************
202//
203// This is basically the same as Ft2QueryTextBoxW, but it behaves as the Win32
204// API GetTextExtent (which ignores character attributes and underhang/overhang)
205//
206// The fallback case is not accurate!! (but the same as our old code)
207//
208//******************************************************************************
209BOOL CFT2Module::Ft2GetTextExtentW(HPS hps, LONG lCount1,LPCWSTR pchString, PPOINTLOS2 pwidthHeight)
210{
211 DWORD ret;
212 USHORT sel;
213 POINTLOS2 aptlPoints[TXTBOX_COUNT];
214
215 // All FreeType calls should be wrapped for saving FS
216 if(pfnFt2GetTextExtentW)
217 {
218 sel = RestoreOS2FS();
219 ret = pfnFt2GetTextExtentW(hps, lCount1, pchString, TXTBOX_COUNT, aptlPoints);
220 SetFS(sel);
221 if(ret || (ret == FALSE && ERRORIDERROR(WinGetLastError(0)) != PMERR_FUNCTION_NOT_SUPPORTED))
222 {
223 calcDimensions(aptlPoints, pwidthHeight);
224 return ret;
225 }
226 }
227 //else fall back to GPI
228 INT lenA;
229 LPSTR strA;
230 POINTLOS2 start = { 0, 0 };
231 PPOINTLOS2 pplos2;
232 INT cx;
233 INT cy;
234
235 pDCData pHps = (pDCData)OSLibGpiQueryDCData(hps);
236
237 lenA = WideCharToMultiByte( CP_ACP, 0, pchString, lCount1, 0, 0, 0, 0 );
238 strA = ( LPSTR )malloc( lenA + 1 );
239 lstrcpynWtoA( strA, pchString, lenA + 1 );
240 pplos2 = ( PPOINTLOS2 )malloc(( lenA + 1 ) * sizeof( POINTLOS2 ));
241
242 ret = OSLibGpiQueryCharStringPosAt( pHps, &start, 0, lenA, strA, NULL, pplos2 );
243 if( ret )
244 {
245 TEXTMETRICW tmW;
246
247 cx = labs( pplos2[ lenA ].x - pplos2[ 0 ].x );
248 cy = labs( pplos2[ lenA ].y - pplos2[ 0 ].y );
249
250 aptlPoints[ TXTBOX_BOTTOMLEFT ].x = 0;
251 aptlPoints[ TXTBOX_BOTTOMLEFT ].y = 0;
252 aptlPoints[ TXTBOX_BOTTOMRIGHT ].x = cx;
253 aptlPoints[ TXTBOX_BOTTOMRIGHT ].y = cy;
254 aptlPoints[ TXTBOX_TOPLEFT ].x = 0;
255 aptlPoints[ TXTBOX_TOPLEFT ].y = 0;
256 aptlPoints[ TXTBOX_TOPRIGHT ].x = cx;
257 aptlPoints[ TXTBOX_TOPRIGHT ].y = cy;
258 aptlPoints[ TXTBOX_CONCAT ].x = cx;
259 aptlPoints[ TXTBOX_CONCAT ].y = cy;
260
261 calcDimensions(aptlPoints, pwidthHeight);
262
263 DecreaseLogCount();
264 if(GetTextMetricsW( hps, &tmW ) == TRUE)
265 {
266 pwidthHeight->y = tmW.tmHeight; // *Must* use the maximum height of the font
267 }
268#ifdef DEBUG
269 else DebugInt3();
270#endif
271 IncreaseLogCount();
272 }
273
274 free( pplos2 );
275 free( strA );
276
277 return ret;
278}
279//******************************************************************************
280//******************************************************************************
281BOOL CFT2Module::Ft2CharStringPosAtA(HPS hps,PPOINTLOS2 ptl,PRECTLOS2 rct,ULONG flOptions,LONG lCount,LPCSTR pchString,CONST INT *alAdx, DWORD fuWin32Options)
282{
283 DWORD ret;
284 USHORT sel;
285
286 // All FreeType calls should be wrapped for saving FS
287 if(pfnFt2CharStringPosAtA) {
288 sel = RestoreOS2FS();
289 ret = pfnFt2CharStringPosAtA(hps, ptl,rct,flOptions,lCount,pchString,alAdx, fuWin32Options);
290 SetFS(sel);
291 if(ret || (ret == FALSE && ERRORIDERROR(WinGetLastError(0)) != PMERR_FUNCTION_NOT_SUPPORTED))
292 return ret;
293 }
294 //else fall back to GPI
295 //NOTE: We don't support fuWin32Options in the fallback case
296 pDCData pHps = (pDCData)OSLibGpiQueryDCData(hps);
297 return OSLibGpiCharStringPosAt(pHps,ptl,rct,flOptions,lCount,pchString,alAdx);
298}
299//******************************************************************************
300//******************************************************************************
301BOOL CFT2Module::Ft2CharStringPosAtW(HPS hps, PPOINTLOS2 ptl,PRECTLOS2 rct,ULONG flOptions,LONG lCount,LPCWSTR pchString,CONST INT *alAdx, DWORD fuWin32Options)
302{
303 DWORD ret;
304 USHORT sel;
305
306 // All FreeType calls should be wrapped for saving FS
307 if(pfnFt2CharStringPosAtW) {
308 sel = RestoreOS2FS();
309 ret = pfnFt2CharStringPosAtW(hps, ptl,rct,flOptions,lCount,pchString,alAdx, fuWin32Options);
310 SetFS(sel);
311 if(ret || (ret == FALSE && ERRORIDERROR(WinGetLastError(0)) != PMERR_FUNCTION_NOT_SUPPORTED))
312 return ret;
313 }
314 //else fall back to GPI
315 //NOTE: We don't support fuWin32Options in the fallback case
316 int len;
317 LPSTR astring;
318
319 pDCData pHps = (pDCData)OSLibGpiQueryDCData(hps);
320
321 len = WideCharToMultiByte( CP_ACP, 0, pchString, lCount, 0, 0, NULL, NULL );
322 astring = (char *)malloc( len + 1 );
323 lstrcpynWtoA(astring, pchString, len + 1 );
324
325 ret = OSLibGpiCharStringPosAt(pHps,ptl,rct,flOptions,len,astring,alAdx);
326 free(astring);
327 return ret;
328}
329//******************************************************************************
330//******************************************************************************
331DWORD CFT2Module::Ft2GetFontData(HPS hps, DWORD dwTable, DWORD dwOffset,
332 LPVOID lpvBuffer, DWORD cbData)
333{
334 //no fallback
335 SetLastError(ERROR_CALL_NOT_IMPLEMENTED_W);
336 return(GDI_ERROR);
337}
338//******************************************************************************
339// Query the font type current selected into the presentation space, or,
340// when hps == NULL, query the type of the font with the specified name
341//******************************************************************************
342DWORD CFT2Module::Ft2QueryFontType(HPS hps, LPCSTR lpszFontName)
343{
344 DWORD ret;
345 USHORT sel;
346
347 // All FreeType calls should be wrapped for saving FS
348 if(pfnFt2QueryFontType) {
349 sel = RestoreOS2FS();
350 ret = pfnFt2QueryFontType(hps, lpszFontName);
351 SetFS(sel);
352 if(ret || (ret == GDI_ERROR && ERRORIDERROR(WinGetLastError(0)) != PMERR_FUNCTION_NOT_SUPPORTED))
353 return ret;
354 }
355 //no fallback
356 return FT2_FONTTYPE_UNKNOWN;
357}
358//******************************************************************************
359//******************************************************************************
360BOOL CFT2Module::Ft2GetStringWidthW(HDC hdc, LPWSTR lpszString, UINT cbString, PINT pWidthArray)
361{
362 DWORD ret;
363 USHORT sel;
364 pDCData pHps;
365
366 pHps = (pDCData)OSLibGpiQueryDCData(hdc);
367 if(pHps == NULL) {
368 DebugInt3();
369 SetLastError(ERROR_INVALID_HANDLE_W);
370 return 0;
371 }
372
373 // All FreeType calls should be wrapped for saving FS
374 if(pfnFt2QueryStringWidthW) {
375 sel = RestoreOS2FS();
376 ret = pfnFt2QueryStringWidthW((HPS)hdc, lpszString, cbString, (LONG *)pWidthArray);
377 SetFS(sel);
378 if(ret || (ret == GDI_ERROR && ERRORIDERROR(WinGetLastError(0)) != PMERR_FUNCTION_NOT_SUPPORTED))
379 {
380 if(pHps && pHps->isPrinter && pHps->hdc)
381 {//scale for printer dcs
382 LONG alArray[2];
383
384 if(OSLibDevQueryCaps(pHps, OSLIB_CAPS_HORIZONTAL_RESOLUTION, 2, &alArray[0]) &&
385 alArray[0] != alArray[1])
386 {
387 dprintf(("Different hor/vert resolutions (%d,%d)", alArray[0], alArray[1]));
388 for (int i = 0; i < cbString; i++)
389 {
390 pWidthArray[i] = pWidthArray[i] * alArray[0] / alArray[1];
391 }
392 }
393 }
394 return ret;
395 }
396 }
397 //fallback method
398 int c, i;
399 for (i = 0; i < cbString; i++)
400 {
401 if (GetCharWidth32W(hdc, lpszString[i], lpszString[i], (LPINT)&c)) {
402 dprintf(("%c pWidthArray[%d] = %d", lpszString[i], i, c));
403 pWidthArray[i]= c;
404 }
405 else {
406 dprintf(("WARNING: GetCharWidth32W failed for %c!!!", lpszString[i]));
407 pWidthArray[i] = 0;
408 }
409 }
410 return TRUE;
411}
412/*****************************************************************************
413 * Name : DWORD GetCharacterPlacementW
414 * Purpose : The GetCharacterPlacementW function retrieves information about
415 * a character string, such as character widths, caret positioning,
416 * ordering within the string, and glyph rendering. The type of
417 * information returned depends on the dwFlags parameter and is
418 * based on the currently selected font in the given display context.
419 * The function copies the information to the specified GCP_RESULTSW
420 * structure or to one or more arrays specified by the structure.
421 * Parameters: HDC hdc handle to device context
422 * LPCSTR lpString pointer to string
423 * int nCount number of characters in string
424 * int nMaxExtent maximum extent for displayed string
425 * GCP_RESULTSW *lpResults pointer to buffer for placement result
426 * DWORD dwFlags placement flags
427 * Variables :
428 * Result :
429 * Remark :
430 * Status : Partly working
431 *
432 * Author : Borrowed Rewind Code
433 *****************************************************************************/
434DWORD CFT2Module::Ft2GetCharacterPlacementW(HDC hdc,
435 LPCWSTR lpString,
436 int uCount,
437 int nMaxExtent,
438 GCP_RESULTSW *lpResults,
439 DWORD dwFlags)
440{
441 DWORD ret;
442 USHORT sel;
443 SIZE size;
444 UINT i, nSet;
445 pDCData pHps;
446
447 pHps = (pDCData)OSLibGpiQueryDCData(hdc);
448 if(pHps == NULL) {
449 DebugInt3();
450 SetLastError(ERROR_INVALID_HANDLE_W);
451 return 0;
452 }
453
454 dprintf(("%ls, %d, %d, 0x%08lx\n", lpString, uCount, nMaxExtent, dwFlags));
455
456 dprintf(("lStructSize=%ld, lpOutString=%p, lpOrder=%p, lpDx=%p, lpCaretPos=%p, lpClass=%p, lpGlyphs=%p, nGlyphs=%u, nMaxFit=%d\n",
457 lpResults->lStructSize, lpResults->lpOutString, lpResults->lpOrder,
458 lpResults->lpDx, lpResults->lpCaretPos, lpResults->lpClass,
459 lpResults->lpGlyphs, lpResults->nGlyphs, lpResults->nMaxFit));
460
461 if(dwFlags&(~0)) dprintf(("unsupported flags 0x%08lx\n", dwFlags));
462 if(lpResults->lpCaretPos) dprintf(("caret positions not implemented\n"));
463 if(lpResults->lpClass) dprintf(("classes not implemented\n"));
464
465 nSet = (UINT)uCount;
466 if(nSet > lpResults->nGlyphs)
467 nSet = lpResults->nGlyphs;
468
469 /* return number of initialized fields */
470 lpResults->nGlyphs = nSet;
471 lpResults->nMaxFit = nSet;
472
473 /* Treat the case where no special handling was requested in a fastpath way */
474 /* copy will do if the GCP_REORDER flag is not set */
475 if(lpResults->lpOutString)
476 strncpyW( lpResults->lpOutString, lpString, nSet );
477
478 if(lpResults->lpOrder)
479 for(i = 0; i < nSet; i++)
480 lpResults->lpOrder[i] = i;
481
482 //fallback method
483
484 /* FIXME: Will use the placement chars */
485 if (lpResults->lpDx)
486 {
487 Ft2GetStringWidthW(hdc, (LPWSTR)lpString, nSet, lpResults->lpDx);
488 }
489
490 if(lpResults->lpGlyphs)
491 GetGlyphIndicesW(hdc, lpString, nSet, lpResults->lpGlyphs, 0);
492
493 if (GetTextExtentPoint32W(hdc, lpString, uCount, &size))
494 ret = MAKELONG(size.cx, size.cy);
495 else ret = 0;
496
497 return ret;
498}
499//******************************************************************************
500//******************************************************************************
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