dlls/gdiplus/metafile.c

   1 /*
   2  * Copyright (C) 2011 Vincent Povirk for CodeWeavers
   3  *
   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.
   8  *
   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.
  13  *
  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
  17  */
  18
  19 #include <stdarg.h>
  20 #include <math.h>
  21
  22 #include "windef.h"
  23 #include "winbase.h"
  24 #include "wingdi.h"
  25 #include "wine/unicode.h"
  26
  27 #define COBJMACROS
  28 #include "objbase.h"
  29 #include "ocidl.h"
  30 #include "olectl.h"
  31 #include "ole2.h"
  32
  33 #include "winreg.h"
  34 #include "shlwapi.h"
  35
  36 #include "gdiplus.h"
  37 #include "gdiplus_private.h"
  38 #include "wine/debug.h"
  39 #include "wine/list.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(gdiplus);
  42
  43 typedef struct EmfPlusRecordHeader
  44 {
  45     WORD Type;
  46     WORD Flags;
  47     DWORD Size;
  48     DWORD DataSize;
  49 } EmfPlusRecordHeader;
  50
  51 typedef struct EmfPlusHeader
  52 {
  53     EmfPlusRecordHeader Header;
  54     DWORD Version;
  55     DWORD EmfPlusFlags;
  56     DWORD LogicalDpiX;
  57     DWORD LogicalDpiY;
  58 } EmfPlusHeader;
  59
  60 static GpStatus METAFILE_AllocateRecord(GpMetafile *metafile, DWORD size, void **result)
  61 {
  62     DWORD size_needed;
  63     EmfPlusRecordHeader *record;
  64
  65     if (!metafile->comment_data_size)
  66     {
  67         DWORD data_size = max(256, size * 2 + 4);
  68         metafile->comment_data = GdipAlloc(data_size);
  69
  70         if (!metafile->comment_data)
  71             return OutOfMemory;
  72
  73         memcpy(metafile->comment_data, "EMF+", 4);
  74
  75         metafile->comment_data_size = data_size;
  76         metafile->comment_data_length = 4;
  77     }
  78
  79     size_needed = size + metafile->comment_data_length;
  80
  81     if (size_needed > metafile->comment_data_size)
  82     {
  83         DWORD data_size = size_needed * 2;
  84         BYTE *new_data = GdipAlloc(data_size);
  85
  86         if (!new_data)
  87             return OutOfMemory;
  88
  89         memcpy(new_data, metafile->comment_data, metafile->comment_data_length);
  90
  91         metafile->comment_data_size = data_size;
  92         GdipFree(metafile->comment_data);
  93         metafile->comment_data = new_data;
  94     }
  95
  96     *result = metafile->comment_data + metafile->comment_data_length;
  97     metafile->comment_data_length += size;
  98
  99     record = (EmfPlusRecordHeader*)*result;
 100     record->Size = size;
 101     record->DataSize = size - sizeof(EmfPlusRecordHeader);
 102
 103     return Ok;
 104 }
 105
 106 static void METAFILE_WriteRecords(GpMetafile *metafile)
 107 {
 108     if (metafile->comment_data_length > 4)
 109     {
 110         GdiComment(metafile->record_dc, metafile->comment_data_length, metafile->comment_data);
 111         metafile->comment_data_length = 4;
 112     }
 113 }
 114
 115 static GpStatus METAFILE_WriteHeader(GpMetafile *metafile, HDC hdc)
 116 {
 117     GpStatus stat;
 118
 119     if (metafile->metafile_type == MetafileTypeEmfPlusOnly || metafile->metafile_type == MetafileTypeEmfPlusDual)
 120     {
 121         EmfPlusHeader *header;
 122
 123         stat = METAFILE_AllocateRecord(metafile, sizeof(EmfPlusHeader), (void**)&header);
 124         if (stat != Ok)
 125             return stat;
 126
 127         header->Header.Type = EmfPlusRecordTypeHeader;
 128
 129         if (metafile->metafile_type == MetafileTypeEmfPlusDual)
 130             header->Header.Flags = 1;
 131         else
 132             header->Header.Flags = 0;
 133
 134         header->Version = 0xDBC01002;
 135
 136         if (GetDeviceCaps(hdc, TECHNOLOGY) == DT_RASDISPLAY)
 137             header->EmfPlusFlags = 1;
 138         else
 139             header->EmfPlusFlags = 0;
 140
 141         header->LogicalDpiX = GetDeviceCaps(hdc, LOGPIXELSX);
 142         header->LogicalDpiY = GetDeviceCaps(hdc, LOGPIXELSY);
 143
 144         METAFILE_WriteRecords(metafile);
 145     }
 146
 147     return Ok;
 148 }
 149
 150 static GpStatus METAFILE_WriteEndOfFile(GpMetafile *metafile)
 151 {
 152     GpStatus stat;
 153
 154     if (metafile->metafile_type == MetafileTypeEmfPlusOnly || metafile->metafile_type == MetafileTypeEmfPlusDual)
 155     {
 156         EmfPlusRecordHeader *record;
 157
 158         stat = METAFILE_AllocateRecord(metafile, sizeof(EmfPlusRecordHeader), (void**)&record);
 159         if (stat != Ok)
 160             return stat;
 161
 162         record->Type = EmfPlusRecordTypeEndOfFile;
 163         record->Flags = 0;
 164
 165         METAFILE_WriteRecords(metafile);
 166     }
 167
 168     return Ok;
 169 }
 170
 171 GpStatus WINGDIPAPI GdipRecordMetafile(HDC hdc, EmfType type, GDIPCONST GpRectF *frameRect,
 172                                        MetafileFrameUnit frameUnit, GDIPCONST WCHAR *desc, GpMetafile **metafile)
 173 {
 174     HDC record_dc;
 175     REAL framerect_factor_x, framerect_factor_y;
 176     RECT rc;
 177     GpStatus stat;
 178
 179     TRACE("(%p %d %p %d %p %p)\n", hdc, type, frameRect, frameUnit, desc, metafile);
 180
 181     if (!hdc || type < EmfTypeEmfOnly || type > EmfTypeEmfPlusDual || !metafile)
 182         return InvalidParameter;
 183
 184     if (!frameRect)
 185     {
 186         FIXME("not implemented for NULL rect\n");
 187         return NotImplemented;
 188     }
 189
 190     switch (frameUnit)
 191     {
 192     case MetafileFrameUnitPixel:
 193         framerect_factor_x = 2540.0 / GetDeviceCaps(hdc, LOGPIXELSX);
 194         framerect_factor_y = 2540.0 / GetDeviceCaps(hdc, LOGPIXELSY);
 195         break;
 196     case MetafileFrameUnitPoint:
 197         framerect_factor_x = framerect_factor_y = 2540.0 / 72.0;
 198         break;
 199     case MetafileFrameUnitInch:
 200         framerect_factor_x = framerect_factor_y = 2540.0;
 201         break;
 202     case MetafileFrameUnitDocument:
 203         framerect_factor_x = framerect_factor_y = 2540.0 / 300.0;
 204         break;
 205     case MetafileFrameUnitMillimeter:
 206         framerect_factor_x = framerect_factor_y = 100.0;
 207         break;
 208     case MetafileFrameUnitGdi:
 209         framerect_factor_x = framerect_factor_y = 1.0;
 210         break;
 211     default:
 212         return InvalidParameter;
 213     }
 214
 215     rc.left = framerect_factor_x * frameRect->X;
 216     rc.top = framerect_factor_y * frameRect->Y;
 217     rc.right = rc.left + framerect_factor_x * frameRect->Width;
 218     rc.bottom = rc.top + framerect_factor_y * frameRect->Height;
 219
 220     record_dc = CreateEnhMetaFileW(hdc, NULL, &rc, desc);
 221
 222     if (!record_dc)
 223         return GenericError;
 224
 225     *metafile = GdipAlloc(sizeof(GpMetafile));
 226     if(!*metafile)
 227     {
 228         DeleteEnhMetaFile(CloseEnhMetaFile(record_dc));
 229         return OutOfMemory;
 230     }
 231
 232     (*metafile)->image.type = ImageTypeMetafile;
 233     (*metafile)->image.picture = NULL;
 234     (*metafile)->image.flags   = ImageFlagsNone;
 235     (*metafile)->image.palette_flags = 0;
 236     (*metafile)->image.palette_count = 0;
 237     (*metafile)->image.palette_size = 0;
 238     (*metafile)->image.palette_entries = NULL;
 239     (*metafile)->bounds = *frameRect;
 240     (*metafile)->unit = frameUnit;
 241     (*metafile)->metafile_type = type;
 242     (*metafile)->record_dc = record_dc;
 243     (*metafile)->comment_data = NULL;
 244     (*metafile)->comment_data_size = 0;
 245     (*metafile)->comment_data_length = 0;
 246     (*metafile)->hemf = NULL;
 247
 248     stat = METAFILE_WriteHeader(*metafile, hdc);
 249
 250     if (stat != Ok)
 251     {
 252         DeleteEnhMetaFile(CloseEnhMetaFile(record_dc));
 253         GdipFree(*metafile);
 254         *metafile = NULL;
 255         return OutOfMemory;
 256     }
 257
 258     return stat;
 259 }
 260
 261 /*****************************************************************************
 262  * GdipRecordMetafileI [GDIPLUS.@]
 263  */
 264 GpStatus WINGDIPAPI GdipRecordMetafileI(HDC hdc, EmfType type, GDIPCONST GpRect *frameRect,
 265                                         MetafileFrameUnit frameUnit, GDIPCONST WCHAR *desc, GpMetafile **metafile)
 266 {
 267     GpRectF frameRectF, *pFrameRectF;
 268
 269     TRACE("(%p %d %p %d %p %p)\n", hdc, type, frameRect, frameUnit, desc, metafile);
 270
 271     if (frameRect)
 272     {
 273         frameRectF.X = frameRect->X;
 274         frameRectF.Y = frameRect->Y;
 275         frameRectF.Width = frameRect->Width;
 276         frameRectF.Height = frameRect->Height;
 277         pFrameRectF = &frameRectF;
 278     }
 279     else
 280         pFrameRectF = NULL;
 281
 282     return GdipRecordMetafile(hdc, type, pFrameRectF, frameUnit, desc, metafile);
 283 }
 284
 285 GpStatus METAFILE_GetGraphicsContext(GpMetafile* metafile, GpGraphics **result)
 286 {
 287     GpStatus stat;
 288
 289     if (!metafile->record_dc || metafile->record_graphics)
 290         return InvalidParameter;
 291
 292     stat = graphics_from_image((GpImage*)metafile, &metafile->record_graphics);
 293
 294     if (stat == Ok)
 295         *result = metafile->record_graphics;
 296
 297     return stat;
 298 }
 299
 300 GpStatus METAFILE_GraphicsDeleted(GpMetafile* metafile)
 301 {
 302     GpStatus stat;
 303
 304     stat = METAFILE_WriteEndOfFile(metafile);
 305     metafile->record_graphics = NULL;
 306
 307     metafile->hemf = CloseEnhMetaFile(metafile->record_dc);
 308     metafile->record_dc = NULL;
 309
 310     return stat;
 311 }
 312
 313 GpStatus WINGDIPAPI GdipGetHemfFromMetafile(GpMetafile *metafile, HENHMETAFILE *hEmf)
 314 {
 315     TRACE("(%p,%p)\n", metafile, hEmf);
 316
 317     if (!metafile || !hEmf || !metafile->hemf)
 318         return InvalidParameter;
 319
 320     *hEmf = metafile->hemf;
 321     metafile->hemf = NULL;
 322
 323     return Ok;
 324 }