graphics/enhmetafiledrv/init.c

   1 /*
   2  * Enhanced MetaFile driver initialisation functions
   3  *
   4  * Copyright 1999 Huw D M Davies
   5  */
   6
   7 #include <string.h>
   8
   9 #include "windef.h"
  10 #include "wingdi.h"
  11 #include "gdi.h"
  12 #include "heap.h"
  13 #include "enhmetafile.h"
  14 #include "enhmetafiledrv.h"
  15 #include "debugtools.h"
  16
  17 DEFAULT_DEBUG_CHANNEL(enhmetafile);
  18
  19 static const DC_FUNCTIONS EMFDRV_Funcs =
  20 {
  21     NULL,                            /* pAbortDoc */
  22     EMFDRV_AbortPath,                /* pAbortPath */
  23     NULL,                            /* pAngleArc */
  24     EMFDRV_Arc,                      /* pArc */
  25     NULL,                            /* pArcTo */
  26     EMFDRV_BeginPath,                /* pBeginPath */
  27     NULL,                            /* pBitBlt */
  28     NULL,                            /* pBitmapBits */
  29     NULL,                            /* pChoosePixelFormat */
  30     EMFDRV_Chord,                    /* pChord */
  31     EMFDRV_CloseFigure,              /* pCloseFigure */
  32     NULL,                            /* pCreateBitmap */
  33     NULL, /* no implementation */    /* pCreateDC */
  34     NULL,                            /* pCreateDIBSection */
  35     NULL,                            /* pCreateDIBSection16 */
  36     NULL, /* no implementation */    /* pDeleteDC */
  37     NULL,                            /* pDeleteObject */
  38     NULL,                            /* pDescribePixelFormat */
  39     NULL,                            /* pDeviceCapabilities */
  40     EMFDRV_Ellipse,                  /* pEllipse */
  41     NULL,                            /* pEndDoc */
  42     NULL,                            /* pEndPage */
  43     EMFDRV_EndPath,                  /* pEndPath */
  44     NULL,                            /* pEnumDeviceFonts */
  45     NULL,                            /* pEscape */
  46     EMFDRV_ExcludeClipRect,          /* pExcludeClipRect */
  47     NULL,                            /* pExtDeviceMode */
  48     EMFDRV_ExtFloodFill,             /* pExtFloodFill */
  49     NULL,                            /* pExtTextOut */
  50     EMFDRV_FillPath,                 /* pFillPath */
  51     EMFDRV_FillRgn,                  /* pFillRgn */
  52     EMFDRV_FlattenPath,              /* pFlattenPath */
  53     EMFDRV_FrameRgn,                 /* pFrameRgn */
  54     NULL,                            /* pGetCharWidth */
  55     NULL,                            /* pGetDCOrgEx */
  56     NULL, /* no implementation */    /* pGetPixel */
  57     NULL,                            /* pGetPixelFormat */
  58     NULL,                            /* pGetTextExtentPoint */
  59     NULL,                            /* pGetTextMetrics */
  60     EMFDRV_IntersectClipRect,        /* pIntersectClipRect */
  61     EMFDRV_InvertRgn,                /* pInvertRgn */
  62     EMFDRV_LineTo,                   /* pLineTo */
  63     EMFDRV_MoveTo,                   /* pMoveTo */
  64     EMFDRV_OffsetClipRgn,            /* pOffsetClipRgn */
  65     NULL,                            /* pOffsetViewportOrg */
  66     NULL,                            /* pOffsetWindowOrg */
  67     EMFDRV_PaintRgn,                 /* pPaintRgn */
  68     NULL,                            /* pPatBlt */
  69     EMFDRV_Pie,                      /* pPie */
  70     NULL,                            /* pPolyBezier */
  71     NULL,                            /* pPolyBezierTo */
  72     NULL,                            /* pPolyDraw */
  73     EMFDRV_PolyPolygon,              /* pPolyPolygon */
  74     EMFDRV_PolyPolyline,             /* pPolyPolyline */
  75     EMFDRV_Polygon,                  /* pPolygon */
  76     EMFDRV_Polyline,                 /* pPolyline */
  77     NULL,                            /* pPolylineTo */
  78     NULL,                            /* pRealizePalette */
  79     EMFDRV_Rectangle,                /* pRectangle */
  80     EMFDRV_RestoreDC,                /* pRestoreDC */
  81     EMFDRV_RoundRect,                /* pRoundRect */
  82     EMFDRV_SaveDC,                   /* pSaveDC */
  83     EMFDRV_ScaleViewportExt,         /* pScaleViewportExt */
  84     EMFDRV_ScaleWindowExt,           /* pScaleWindowExt */
  85     EMFDRV_SelectClipPath,           /* pSelectClipPath */
  86     NULL,                            /* pSelectClipRgn */
  87     EMFDRV_SelectObject,             /* pSelectObject */
  88     NULL,                            /* pSelectPalette */
  89     EMFDRV_SetBkColor,               /* pSetBkColor */
  90     EMFDRV_SetBkMode,                /* pSetBkMode */
  91     NULL,                            /* pSetDeviceClipping */
  92     NULL,                            /* pSetDIBitsToDevice */
  93     EMFDRV_SetMapMode,               /* pSetMapMode */
  94     EMFDRV_SetMapperFlags,           /* pSetMapperFlags */
  95     NULL,                            /* pSetPixel */
  96     NULL,                            /* pSetPixelFormat */
  97     EMFDRV_SetPolyFillMode,          /* pSetPolyFillMode */
  98     EMFDRV_SetROP2,                  /* pSetROP2 */
  99     NULL,                            /* pSetRelAbs */
 100     EMFDRV_SetStretchBltMode,        /* pSetStretchBltMode */
 101     EMFDRV_SetTextAlign,             /* pSetTextAlign */
 102     NULL,                            /* pSetTextCharacterExtra */
 103     EMFDRV_SetTextColor,             /* pSetTextColor */
 104     NULL,                            /* pSetTextJustification */
 105     EMFDRV_SetViewportExt,           /* pSetViewportExt */
 106     EMFDRV_SetViewportOrg,           /* pSetViewportOrg */
 107     EMFDRV_SetWindowExt,             /* pSetWindowExt */
 108     EMFDRV_SetWindowOrg,             /* pSetWindowOrg */
 109     NULL,                            /* pStartDoc */
 110     NULL,                            /* pStartPage */
 111     NULL,                            /* pStretchBlt */
 112     NULL,                            /* pStretchDIBits */
 113     EMFDRV_StrokeAndFillPath,        /* pStrokeAndFillPath */
 114     EMFDRV_StrokePath,               /* pStrokePath */
 115     NULL,                            /* pSwapBuffers */
 116     EMFDRV_WidenPath                 /* pWiddenPath */
 117 };
 118
 119
 120 /**********************************************************************
 121  *           EMFDRV_DeleteDC
 122  */
 123 static BOOL EMFDRV_DeleteDC( DC *dc )
 124 {
 125     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE *)dc->physDev;
 126
 127     if (physDev->emh) HeapFree( GetProcessHeap(), 0, physDev->emh );
 128     HeapFree( GetProcessHeap(), 0, physDev );
 129     dc->physDev = NULL;
 130     GDI_FreeObject( dc->hSelf, dc );
 131     return TRUE;
 132 }
 133
 134
 135 /******************************************************************
 136  *         EMFDRV_WriteRecord
 137  *
 138  * Warning: this function can change the pointer to the metafile header.
 139  */
 140 BOOL EMFDRV_WriteRecord( DC *dc, EMR *emr )
 141 {
 142     DWORD len;
 143     ENHMETAHEADER *emh;
 144     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE *)dc->physDev;
 145
 146     physDev->emh->nBytes += emr->nSize;
 147     physDev->emh->nRecords++;
 148
 149     if(physDev->hFile) {
 150         TRACE("Writing record to disk\n");
 151         if (!WriteFile(physDev->hFile, (char *)emr, emr->nSize, NULL, NULL))
 152             return FALSE;
 153     } else {
 154         len = physDev->emh->nBytes;
 155         emh = HeapReAlloc( GetProcessHeap(), 0, physDev->emh, len );
 156         if (!emh) return FALSE;
 157         physDev->emh = emh;
 158         memcpy((CHAR *)physDev->emh + physDev->emh->nBytes - emr->nSize, emr,
 159                emr->nSize);
 160     }
 161     return TRUE;
 162 }
 163
 164
 165 /******************************************************************
 166  *         EMFDRV_UpdateBBox
 167  */
 168 void EMFDRV_UpdateBBox( DC *dc, RECTL *rect )
 169 {
 170     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE *)dc->physDev;
 171     RECTL *bounds = &physDev->emh->rclBounds;
 172
 173     if(bounds->left > bounds->right) {/* first rect */
 174         *bounds = *rect;
 175         return;
 176     }
 177     bounds->left   = min(bounds->left,   rect->left);
 178     bounds->top    = min(bounds->top,    rect->top);
 179     bounds->right  = max(bounds->right,  rect->right);
 180     bounds->bottom = max(bounds->bottom, rect->bottom);
 181     return;
 182 }
 183
 184 /******************************************************************
 185  *         EMFDRV_AddHandleDC
 186  *
 187  * Note: this function assumes that we never delete objects.
 188  * If we do someday, we'll need to maintain a table to re-use deleted
 189  * handles.
 190  */
 191 int EMFDRV_AddHandleDC( DC *dc )
 192 {
 193     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE *)dc->physDev;
 194     physDev->emh->nHandles++;
 195     return physDev->nextHandle++;
 196 }
 197
 198
 199 /**********************************************************************
 200  *          CreateEnhMetaFileA   (GDI32.41)
 201  */
 202 HDC WINAPI CreateEnhMetaFileA(
 203     HDC hdc,           /* [in] optional reference DC */
 204     LPCSTR filename,   /* [in] optional filename for disk metafiles */
 205     const RECT *rect,  /* [in] optional bounding rectangle */
 206     LPCSTR description /* [in] optional description */
 207     )
 208 {
 209     LPWSTR filenameW = NULL;
 210     LPWSTR descriptionW = NULL;
 211     HDC hReturnDC;
 212     DWORD len1, len2, total;
 213
 214     if(filename)
 215         filenameW = HEAP_strdupAtoW( GetProcessHeap(), 0, filename );
 216
 217     if(description) {
 218         len1 = strlen(description);
 219         len2 = strlen(description + len1 + 1);
 220         total = MultiByteToWideChar( CP_ACP, 0, description, len1 + len2 + 3, NULL, 0 );
 221         descriptionW = HeapAlloc( GetProcessHeap(), 0, total * sizeof(WCHAR) );
 222         MultiByteToWideChar( CP_ACP, 0, description, len1 + len2 + 3, descriptionW, total );
 223     }
 224
 225     hReturnDC = CreateEnhMetaFileW(hdc, filenameW, rect, descriptionW);
 226
 227     if(filenameW)
 228         HeapFree( GetProcessHeap(), 0, filenameW );
 229     if(descriptionW)
 230         HeapFree( GetProcessHeap(), 0, descriptionW );
 231
 232     return hReturnDC;
 233 }
 234
 235 /**********************************************************************
 236  *          CreateEnhMetaFileW   (GDI32.42)
 237  */
 238 HDC WINAPI CreateEnhMetaFileW(
 239     HDC           hdc,        /* [in] optional reference DC */
 240     LPCWSTR       filename,   /* [in] optional filename for disk metafiles */
 241     const RECT*   rect,       /* [in] optional bounding rectangle */
 242     LPCWSTR       description /* [in] optional description */
 243     )
 244 {
 245     HDC ret;
 246     DC *dc;
 247     HDC hRefDC = hdc ? hdc : CreateDCA("DISPLAY",NULL,NULL,NULL); /* If no ref, use current display */
 248     EMFDRV_PDEVICE *physDev;
 249     HFILE hFile;
 250     DWORD size = 0, length = 0;
 251
 252     TRACE("'%s'\n", debugstr_w(filename) );
 253
 254     if (!(dc = DC_AllocDC( &EMFDRV_Funcs ))) return 0;
 255     dc->header.wMagic = ENHMETAFILE_DC_MAGIC;
 256
 257     physDev = (EMFDRV_PDEVICE *)HeapAlloc(GetProcessHeap(),0,sizeof(*physDev));
 258     if (!physDev) {
 259         GDI_FreeObject( dc->hSelf, dc );
 260         return 0;
 261     }
 262     dc->physDev = physDev;
 263
 264     if(description) { /* App name\0Title\0\0 */
 265         length = lstrlenW(description);
 266         length += lstrlenW(description + length + 1);
 267         length += 3;
 268         length *= 2;
 269     }
 270     size = sizeof(ENHMETAHEADER) + (length + 3) / 4 * 4;
 271
 272     if (!(physDev->emh = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, size))) {
 273         HeapFree( GetProcessHeap(), 0, physDev );
 274         GDI_FreeObject( dc->hSelf, dc );
 275         return 0;
 276     }
 277
 278     physDev->nextHandle = 1;
 279     physDev->hFile = 0;
 280
 281     physDev->emh->iType = EMR_HEADER;
 282     physDev->emh->nSize = size;
 283
 284     physDev->emh->rclBounds.left = physDev->emh->rclBounds.top = 0;
 285     physDev->emh->rclBounds.right = physDev->emh->rclBounds.bottom = -1;
 286
 287     if(rect) {
 288         physDev->emh->rclFrame.left   = rect->left;
 289         physDev->emh->rclFrame.top    = rect->top;
 290         physDev->emh->rclFrame.right  = rect->right;
 291         physDev->emh->rclFrame.bottom = rect->bottom;
 292     } else {  /* Set this to {0,0 - -1,-1} and update it at the end */
 293         physDev->emh->rclFrame.left = physDev->emh->rclFrame.top = 0;
 294         physDev->emh->rclFrame.right = physDev->emh->rclFrame.bottom = -1;
 295     }
 296
 297     physDev->emh->dSignature = ENHMETA_SIGNATURE;
 298     physDev->emh->nVersion = 0x10000;
 299     physDev->emh->nBytes = physDev->emh->nSize;
 300     physDev->emh->nRecords = 1;
 301     physDev->emh->nHandles = 1;
 302
 303     physDev->emh->sReserved = 0; /* According to docs, this is reserved and must be 0 */
 304     physDev->emh->nDescription = length / 2;
 305
 306     physDev->emh->offDescription = length ? sizeof(ENHMETAHEADER) : 0;
 307
 308     physDev->emh->nPalEntries = 0; /* I guess this should start at 0 */
 309
 310     /* Size in pixels */
 311     physDev->emh->szlDevice.cx = GetDeviceCaps( hRefDC, HORZRES );
 312     physDev->emh->szlDevice.cy = GetDeviceCaps( hRefDC, VERTRES );
 313
 314     /* Size in millimeters */
 315     physDev->emh->szlMillimeters.cx = GetDeviceCaps( hRefDC, HORZSIZE );
 316     physDev->emh->szlMillimeters.cy = GetDeviceCaps( hRefDC, VERTSIZE );
 317
 318     memcpy((char *)physDev->emh + sizeof(ENHMETAHEADER), description, length);
 319
 320     if (filename)  /* disk based metafile */
 321     {
 322         if ((hFile = CreateFileW(filename, GENERIC_WRITE | GENERIC_READ, 0,
 323                                  NULL, CREATE_ALWAYS, 0, 0)) == INVALID_HANDLE_VALUE) {
 324             EMFDRV_DeleteDC( dc );
 325             return 0;
 326         }
 327         if (!WriteFile( hFile, (LPSTR)physDev->emh, size, NULL, NULL )) {
 328             EMFDRV_DeleteDC( dc );
 329             return 0;
 330         }
 331         physDev->hFile = hFile;
 332     }
 333
 334     if( !hdc )
 335       DeleteDC( hRefDC );
 336
 337     TRACE("returning %04x\n", dc->hSelf);
 338     ret = dc->hSelf;
 339     GDI_ReleaseObj( dc->hSelf );
 340     return ret;
 341 }
 342
 343 /******************************************************************
 344  *             CloseEnhMetaFile
 345  */
 346 HENHMETAFILE WINAPI CloseEnhMetaFile(HDC hdc) /* [in] metafile DC */
 347 {
 348     HENHMETAFILE hmf;
 349     EMFDRV_PDEVICE *physDev;
 350     DC *dc;
 351     EMREOF emr;
 352     HANDLE hMapping = 0;
 353
 354     TRACE("(%04x)\n", hdc );
 355
 356     if (!(dc = (DC *) GDI_GetObjPtr( hdc, ENHMETAFILE_DC_MAGIC ))) return 0;
 357     physDev = (EMFDRV_PDEVICE *)dc->physDev;
 358
 359     emr.emr.iType = EMR_EOF;
 360     emr.emr.nSize = sizeof(emr);
 361     emr.nPalEntries = 0;
 362     emr.offPalEntries = 0;
 363     emr.nSizeLast = emr.emr.nSize;
 364     EMFDRV_WriteRecord( dc, &emr.emr );
 365
 366     /* Update rclFrame if not initialized in CreateEnhMetaFile */
 367     if(physDev->emh->rclFrame.left > physDev->emh->rclFrame.right) {
 368         physDev->emh->rclFrame.left = physDev->emh->rclBounds.left *
 369           physDev->emh->szlMillimeters.cx * 100 / physDev->emh->szlDevice.cx;
 370         physDev->emh->rclFrame.top = physDev->emh->rclBounds.top *
 371           physDev->emh->szlMillimeters.cy * 100 / physDev->emh->szlDevice.cy;
 372         physDev->emh->rclFrame.right = physDev->emh->rclBounds.right *
 373           physDev->emh->szlMillimeters.cx * 100 / physDev->emh->szlDevice.cx;
 374         physDev->emh->rclFrame.bottom = physDev->emh->rclBounds.bottom *
 375           physDev->emh->szlMillimeters.cy * 100 / physDev->emh->szlDevice.cy;
 376     }
 377
 378     if (physDev->hFile)  /* disk based metafile */
 379     {
 380         if (SetFilePointer(physDev->hFile, 0, NULL, FILE_BEGIN) != 0) {
 381             EMFDRV_DeleteDC( dc );
 382             return 0;
 383         }
 384
 385         if (!WriteFile(physDev->hFile, (LPSTR)physDev->emh,
 386                        sizeof(*physDev->emh), NULL, NULL)) {
 387             EMFDRV_DeleteDC( dc );
 388             return 0;
 389         }
 390         HeapFree( GetProcessHeap(), 0, physDev->emh );
 391         hMapping = CreateFileMappingA(physDev->hFile, NULL, PAGE_READONLY, 0,
 392                                       0, NULL);
 393         TRACE("hMapping = %08x\n", hMapping );
 394         physDev->emh = MapViewOfFile(hMapping, FILE_MAP_READ, 0, 0, 0);
 395         TRACE("view = %p\n", physDev->emh );
 396     }
 397
 398
 399     hmf = EMF_Create_HENHMETAFILE( physDev->emh, physDev->hFile, hMapping );
 400     physDev->emh = NULL;  /* So it won't be deleted */
 401     EMFDRV_DeleteDC( dc );
 402     return hmf;
 403 }
 404
 405