git.oblomov.eu Git - wine/blob - graphics/enhmetafiledrv/init.c

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