reactos/dll/win32/gdiplus/font.c

   1 /*
   2  * Copyright (C) 2007 Google (Evan Stade)
   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
  21 #include "windef.h"
  22 #include "winbase.h"
  23 #include "wingdi.h"
  24 #include "winnls.h"
  25 #include "winreg.h"
  26 #include "wine/debug.h"
  27 #include "wine/unicode.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL (gdiplus);
  30
  31 #include "objbase.h"
  32
  33 #include "gdiplus.h"
  34 #include "gdiplus_private.h"
  35
  36 static const REAL mm_per_inch = 25.4;
  37 static const REAL inch_per_point = 1.0/72.0;
  38
  39 static inline REAL get_dpi (void)
  40 {
  41     REAL dpi;
  42     GpGraphics *graphics;
  43     HDC hdc = GetDC(0);
  44     GdipCreateFromHDC (hdc, &graphics);
  45     GdipGetDpiX(graphics, &dpi);
  46     GdipDeleteGraphics(graphics);
  47     ReleaseDC (0, hdc);
  48
  49     return dpi;
  50 }
  51
  52 static inline REAL point_to_pixel (REAL point)
  53 {
  54     return point * get_dpi() * inch_per_point;
  55 }
  56
  57 static inline REAL inch_to_pixel (REAL inch)
  58 {
  59     return inch * get_dpi();
  60 }
  61
  62 static inline REAL document_to_pixel (REAL doc)
  63 {
  64     return doc * (get_dpi() / 300.0); /* Per MSDN */
  65 }
  66
  67 static inline REAL mm_to_pixel (REAL mm)
  68 {
  69     return mm * (get_dpi() / mm_per_inch);
  70 }
  71
  72 /*******************************************************************************
  73  * GdipCreateFont [GDIPLUS.@]
  74  *
  75  * Create a new font based off of a FontFamily
  76  *
  77  * PARAMS
  78  *  *fontFamily     [I] Family to base the font off of
  79  *  emSize          [I] Size of the font
  80  *  style           [I] Bitwise OR of FontStyle enumeration
  81  *  unit            [I] Unit emSize is measured in
  82  *  **font          [I] the resulting Font object
  83  *
  84  * RETURNS
  85  *  SUCCESS: Ok
  86  *  FAILURE: InvalidParameter if fontfamily or font is NULL.
  87  *  FAILURE: FontFamilyNotFound if an invalid FontFamily is given
  88  *
  89  * NOTES
  90  *  UnitDisplay is unsupported.
  91  *  emSize is stored separately from lfHeight, to hold the fraction.
  92  */
  93 GpStatus WINGDIPAPI GdipCreateFont(GDIPCONST GpFontFamily *fontFamily,
  94                         REAL emSize, INT style, Unit unit, GpFont **font)
  95 {
  96     WCHAR facename[LF_FACESIZE];
  97     LOGFONTW* lfw;
  98     const TEXTMETRICW* tmw;
  99     GpStatus stat;
 100
 101     if (!fontFamily || !fontFamily->FamilyName || !font)
 102         return InvalidParameter;
 103
 104     TRACE("%p (%s), %f, %d, %d, %p\n", fontFamily,
 105             debugstr_w(fontFamily->FamilyName), emSize, style, unit, font);
 106
 107     stat = GdipGetFamilyName (fontFamily, facename, 0);
 108     if (stat != Ok) return stat;
 109     *font = GdipAlloc(sizeof(GpFont));
 110
 111     tmw = &fontFamily->tmw;
 112     lfw = &((*font)->lfw);
 113     ZeroMemory(&(*lfw), sizeof(*lfw));
 114
 115     lfw->lfWeight = tmw->tmWeight;
 116     lfw->lfItalic = tmw->tmItalic;
 117     lfw->lfUnderline = tmw->tmUnderlined;
 118     lfw->lfStrikeOut = tmw->tmStruckOut;
 119     lfw->lfCharSet = tmw->tmCharSet;
 120     lfw->lfPitchAndFamily = tmw->tmPitchAndFamily;
 121     lstrcpynW((lfw->lfFaceName), facename, sizeof(WCHAR) * LF_FACESIZE);
 122
 123     switch (unit)
 124     {
 125         case UnitWorld:
 126             /* FIXME: Figure out when World != Pixel */
 127             lfw->lfHeight = emSize; break;
 128         case UnitDisplay:
 129             FIXME("Unknown behavior for UnitDisplay! Please report!\n");
 130             /* FIXME: Figure out how this works...
 131              * MSDN says that if "DISPLAY" is a monitor, then pixel should be
 132              * used. That's not what I got. Tests on Windows revealed no output,
 133              * and the tests in tests/font crash windows */
 134             lfw->lfHeight = 0; break;
 135         case UnitPixel:
 136             lfw->lfHeight = emSize; break;
 137         case UnitPoint:
 138             lfw->lfHeight = point_to_pixel(emSize); break;
 139         case UnitInch:
 140             lfw->lfHeight = inch_to_pixel(emSize); break;
 141         case UnitDocument:
 142             lfw->lfHeight = document_to_pixel(emSize); break;
 143         case UnitMillimeter:
 144             lfw->lfHeight = mm_to_pixel(emSize); break;
 145     }
 146
 147     lfw->lfHeight *= -1;
 148
 149     lfw->lfWeight = style & FontStyleBold ? 700 : 400;
 150     lfw->lfItalic = style & FontStyleItalic;
 151     lfw->lfUnderline = style & FontStyleUnderline;
 152     lfw->lfStrikeOut = style & FontStyleStrikeout;
 153
 154     (*font)->unit = unit;
 155     (*font)->emSize = emSize;
 156
 157     return Ok;
 158 }
 159
 160 GpStatus WINGDIPAPI GdipCreateFontFromLogfontW(HDC hdc,
 161     GDIPCONST LOGFONTW *logfont, GpFont **font)
 162 {
 163     HFONT hfont, oldfont;
 164     TEXTMETRICW textmet;
 165
 166     if(!logfont || !font)
 167         return InvalidParameter;
 168
 169     *font = GdipAlloc(sizeof(GpFont));
 170     if(!*font)  return OutOfMemory;
 171
 172     memcpy(&(*font)->lfw.lfFaceName, logfont->lfFaceName, LF_FACESIZE *
 173            sizeof(WCHAR));
 174     (*font)->lfw.lfHeight = logfont->lfHeight;
 175     (*font)->lfw.lfItalic = logfont->lfItalic;
 176     (*font)->lfw.lfUnderline = logfont->lfUnderline;
 177     (*font)->lfw.lfStrikeOut = logfont->lfStrikeOut;
 178
 179     (*font)->emSize = logfont->lfHeight;
 180     (*font)->unit = UnitPixel;
 181
 182     hfont = CreateFontIndirectW(&(*font)->lfw);
 183     oldfont = SelectObject(hdc, hfont);
 184     GetTextMetricsW(hdc, &textmet);
 185
 186     (*font)->lfw.lfHeight = -textmet.tmHeight;
 187     (*font)->lfw.lfWeight = textmet.tmWeight;
 188
 189     SelectObject(hdc, oldfont);
 190     DeleteObject(hfont);
 191
 192     return Ok;
 193 }
 194
 195 GpStatus WINGDIPAPI GdipCreateFontFromLogfontA(HDC hdc,
 196     GDIPCONST LOGFONTA *lfa, GpFont **font)
 197 {
 198     LOGFONTW lfw;
 199
 200     if(!lfa || !font)
 201         return InvalidParameter;
 202
 203     memcpy(&lfw, lfa, FIELD_OFFSET(LOGFONTA,lfFaceName) );
 204
 205     if(!MultiByteToWideChar(CP_ACP, 0, lfa->lfFaceName, -1, lfw.lfFaceName, LF_FACESIZE))
 206         return GenericError;
 207
 208     GdipCreateFontFromLogfontW(hdc, &lfw, font);
 209
 210     return Ok;
 211 }
 212
 213 GpStatus WINGDIPAPI GdipDeleteFont(GpFont* font)
 214 {
 215     if(!font)
 216         return InvalidParameter;
 217
 218     GdipFree(font);
 219
 220     return Ok;
 221 }
 222
 223 GpStatus WINGDIPAPI GdipCreateFontFromDC(HDC hdc, GpFont **font)
 224 {
 225     HFONT hfont;
 226     LOGFONTW lfw;
 227
 228     if(!font)
 229         return InvalidParameter;
 230
 231     hfont = (HFONT)GetCurrentObject(hdc, OBJ_FONT);
 232     if(!hfont)
 233         return GenericError;
 234
 235     if(!GetObjectW(hfont, sizeof(LOGFONTW), &lfw))
 236         return GenericError;
 237
 238     return GdipCreateFontFromLogfontW(hdc, &lfw, font);
 239 }
 240
 241 /******************************************************************************
 242  * GdipGetFontSize [GDIPLUS.@]
 243  *
 244  * Returns the size of the font in Units
 245  *
 246  * PARAMS
 247  *  *font       [I] The font to retrieve size from
 248  *  *size       [O] Pointer to hold retrieved value
 249  *
 250  * RETURNS
 251  *  SUCCESS: Ok
 252  *  FAILURE: InvalidParamter (font or size was NULL)
 253  *
 254  * NOTES
 255  *  Size returned is actually emSize -- not internal size used for drawing.
 256  */
 257 GpStatus WINGDIPAPI GdipGetFontSize(GpFont *font, REAL *size)
 258 {
 259     if (!(font && size)) return InvalidParameter;
 260
 261     *size = font->emSize;
 262
 263     return Ok;
 264 }
 265
 266 /*******************************************************************************
 267  * GdipGetFontUnit  [GDIPLUS.@]
 268  *
 269  * PARAMS
 270  *  font    [I] Font to retrieve from
 271  *  unit    [O] Return value
 272  *
 273  * RETURNS
 274  *  FAILURE: font or unit was NULL
 275  *  OK: otherwise
 276  */
 277 GpStatus WINGDIPAPI GdipGetFontUnit(GpFont *font, Unit *unit)
 278 {
 279     if (!(font && unit)) return InvalidParameter;
 280
 281     *unit = font->unit;
 282
 283     return Ok;
 284 }
 285
 286 /* FIXME: use graphics */
 287 GpStatus WINGDIPAPI GdipGetLogFontW(GpFont *font, GpGraphics *graphics,
 288     LOGFONTW *lfw)
 289 {
 290     if(!font || !graphics || !lfw)
 291         return InvalidParameter;
 292
 293     *lfw = font->lfw;
 294
 295     return Ok;
 296 }
 297
 298 GpStatus WINGDIPAPI GdipCloneFont(GpFont *font, GpFont **cloneFont)
 299 {
 300     if(!font || !cloneFont)
 301         return InvalidParameter;
 302
 303     *cloneFont = GdipAlloc(sizeof(GpFont));
 304     if(!*cloneFont)    return OutOfMemory;
 305
 306     **cloneFont = *font;
 307
 308     return Ok;
 309 }
 310
 311 /* Borrowed from GDI32 */
 312 static INT CALLBACK is_font_installed_proc(const LOGFONTW *elf,
 313                             const TEXTMETRICW *ntm, DWORD type, LPARAM lParam)
 314 {
 315     return 0;
 316 }
 317
 318 static BOOL is_font_installed(const WCHAR *name)
 319 {
 320     HDC hdc = GetDC(0);
 321     BOOL ret = FALSE;
 322
 323     if(!EnumFontFamiliesW(hdc, name, is_font_installed_proc, 0))
 324         ret = TRUE;
 325
 326     ReleaseDC(0, hdc);
 327     return ret;
 328 }
 329
 330 /*******************************************************************************
 331  * GdipCreateFontFamilyFromName [GDIPLUS.@]
 332  *
 333  * Creates a font family object based on a supplied name
 334  *
 335  * PARAMS
 336  *  name               [I] Name of the font
 337  *  fontCollection     [I] What font collection (if any) the font belongs to (may be NULL)
 338  *  FontFamily         [O] Pointer to the resulting FontFamily object
 339  *
 340  * RETURNS
 341  *  SUCCESS: Ok
 342  *  FAILURE: FamilyNotFound if the requested FontFamily does not exist on the system
 343  *  FAILURE: Invalid parameter if FontFamily or name is NULL
 344  *
 345  * NOTES
 346  *   If fontCollection is NULL then the object is not part of any collection
 347  *
 348  */
 349
 350 GpStatus WINGDIPAPI GdipCreateFontFamilyFromName(GDIPCONST WCHAR *name,
 351                                         GpFontCollection *fontCollection,
 352                                         GpFontFamily **FontFamily)
 353 {
 354     GpFontFamily* ffamily;
 355     HDC hdc;
 356     HFONT hFont, hfont_old;
 357     LOGFONTW lfw;
 358
 359     TRACE("%s, %p %p\n", debugstr_w(name), fontCollection, FontFamily);
 360
 361     if (!(name && FontFamily))
 362         return InvalidParameter;
 363     if (fontCollection)
 364         FIXME("No support for FontCollections yet!\n");
 365     if (!is_font_installed(name))
 366         return FontFamilyNotFound;
 367
 368     ffamily = GdipAlloc(sizeof (GpFontFamily));
 369     if (!ffamily) return OutOfMemory;
 370
 371     hdc = GetDC(0);
 372     lstrcpynW(lfw.lfFaceName, name, sizeof(WCHAR) * LF_FACESIZE);
 373     hFont = CreateFontIndirectW (&lfw);
 374     hfont_old = SelectObject(hdc, hFont);
 375
 376     GetTextMetricsW(hdc, &ffamily->tmw);
 377     DeleteObject(SelectObject(hdc, hfont_old));
 378
 379     ffamily->FamilyName = GdipAlloc(LF_FACESIZE * sizeof (WCHAR));
 380     if (!ffamily->FamilyName)
 381     {
 382         GdipFree(ffamily);
 383         ReleaseDC(0, hdc);
 384         return OutOfMemory;
 385     }
 386
 387     lstrcpynW(ffamily->FamilyName, name, sizeof(WCHAR) * LF_FACESIZE);
 388
 389     *FontFamily = ffamily;
 390     ReleaseDC(0, hdc);
 391
 392     return Ok;
 393 }
 394
 395 /*******************************************************************************
 396  * GdipGetFamilyName [GDIPLUS.@]
 397  *
 398  * Returns the family name into name
 399  *
 400  * PARAMS
 401  *  *family     [I] Family to retrieve from
 402  *  *name       [O] WCHARS of the family name
 403  *  LANGID      [I] charset
 404  *
 405  * RETURNS
 406  *  SUCCESS: Ok
 407  *  FAILURE: InvalidParameter if family is NULL
 408  *
 409  * NOTES
 410  *   If name is a NULL ptr, then both XP and Vista will crash (so we do as well)
 411  */
 412 GpStatus WINGDIPAPI GdipGetFamilyName (GDIPCONST GpFontFamily *family,
 413                                        WCHAR *name, LANGID language)
 414 {
 415     if (family == NULL)
 416          return InvalidParameter;
 417
 418     TRACE("%p, %p, %d\n", family, name, language);
 419
 420     if (language != LANG_NEUTRAL)
 421         FIXME("No support for handling of multiple languages!\n");
 422
 423     lstrcpynW (name, family->FamilyName, LF_FACESIZE);
 424
 425     return Ok;
 426 }
 427
 428
 429 /*****************************************************************************
 430  * GdipDeleteFontFamily [GDIPLUS.@]
 431  *
 432  * Removes the specified FontFamily
 433  *
 434  * PARAMS
 435  *  *FontFamily         [I] The family to delete
 436  *
 437  * RETURNS
 438  *  SUCCESS: Ok
 439  *  FAILURE: InvalidParameter if FontFamily is NULL.
 440  *
 441  */
 442 GpStatus WINGDIPAPI GdipDeleteFontFamily(GpFontFamily *FontFamily)
 443 {
 444     if (!FontFamily)
 445         return InvalidParameter;
 446     TRACE("Deleting %p (%s)\n", FontFamily, debugstr_w(FontFamily->FamilyName));
 447
 448     if (FontFamily->FamilyName) GdipFree (FontFamily->FamilyName);
 449     GdipFree (FontFamily);
 450
 451     return Ok;
 452 }
 453
 454 /*****************************************************************************
 455  * GdipGetGenericFontFamilyMonospace [GDIPLUS.@]
 456  *
 457  * Obtains a serif family (Courier New on Windows)
 458  *
 459  * PARAMS
 460  *  **nativeFamily         [I] Where the font will be stored
 461  *
 462  * RETURNS
 463  *  InvalidParameter if nativeFamily is NULL.
 464  *  Ok otherwise.
 465  */
 466 GpStatus WINGDIPAPI GdipGetGenericFontFamilyMonospace(GpFontFamily **nativeFamily)
 467 {
 468     static const WCHAR CourierNew[] = {'C','o','u','r','i','e','r',' ','N','e','w','\0'};
 469
 470     if (nativeFamily == NULL) return InvalidParameter;
 471
 472     return GdipCreateFontFamilyFromName(CourierNew, NULL, nativeFamily);
 473 }
 474
 475 /*****************************************************************************
 476  * GdipGetGenericFontFamilySerif [GDIPLUS.@]
 477  *
 478  * Obtains a serif family (Times New Roman on Windows)
 479  *
 480  * PARAMS
 481  *  **nativeFamily         [I] Where the font will be stored
 482  *
 483  * RETURNS
 484  *  InvalidParameter if nativeFamily is NULL.
 485  *  Ok otherwise.
 486  */
 487 GpStatus WINGDIPAPI GdipGetGenericFontFamilySerif(GpFontFamily **nativeFamily)
 488 {
 489     static const WCHAR TimesNewRoman[] = {'T','i','m','e','s',' ','N','e','w',' ','R','o','m','a','n','\0'};
 490
 491     if (nativeFamily == NULL) return InvalidParameter;
 492
 493     return GdipCreateFontFamilyFromName(TimesNewRoman, NULL, nativeFamily);
 494 }
 495
 496 /*****************************************************************************
 497  * GdipGetGenericFontFamilySansSerif [GDIPLUS.@]
 498  *
 499  * Obtains a serif family (Microsoft Sans Serif on Windows)
 500  *
 501  * PARAMS
 502  *  **nativeFamily         [I] Where the font will be stored
 503  *
 504  * RETURNS
 505  *  InvalidParameter if nativeFamily is NULL.
 506  *  Ok otherwise.
 507  */
 508 GpStatus WINGDIPAPI GdipGetGenericFontFamilySansSerif(GpFontFamily **nativeFamily)
 509 {
 510     /* FIXME: On Windows this is called Microsoft Sans Serif, this shouldn't
 511      * affect anything */
 512     static const WCHAR MSSansSerif[] = {'M','S',' ','S','a','n','s',' ','S','e','r','i','f','\0'};
 513
 514     if (nativeFamily == NULL) return InvalidParameter;
 515
 516     return GdipCreateFontFamilyFromName(MSSansSerif, NULL, nativeFamily);
 517 }