dlls/dwrite/gdiinterop.c

   1 /*
   2  *    GDI Interop
   3  *
   4  * Copyright 2011 Huw Davies
   5  * Copyright 2012, 2014 Nikolay Sivov for CodeWeavers
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #define COBJMACROS
  23
  24 #include <stdarg.h>
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "wingdi.h"
  29 #include "dwrite_private.h"
  30
  31 #include "wine/debug.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(dwrite);
  34
  35 struct gdiinterop {
  36     IDWriteGdiInterop IDWriteGdiInterop_iface;
  37     IDWriteFactory2 *factory;
  38 };
  39
  40 struct dib_data {
  41     DWORD *ptr;
  42     int stride;
  43     int width;
  44 };
  45
  46 struct rendertarget {
  47     IDWriteBitmapRenderTarget1 IDWriteBitmapRenderTarget1_iface;
  48     ID2D1SimplifiedGeometrySink ID2D1SimplifiedGeometrySink_iface;
  49     LONG ref;
  50
  51     IDWriteFactory *factory;
  52     DWRITE_TEXT_ANTIALIAS_MODE antialiasmode;
  53     FLOAT ppdip;
  54     DWRITE_MATRIX m;
  55     SIZE size;
  56     HDC hdc;
  57     struct dib_data dib;
  58 };
  59
  60 static inline int get_dib_stride(int width, int bpp)
  61 {
  62     return ((width * bpp + 31) >> 3) & ~3;
  63 }
  64
  65 static HRESULT create_target_dibsection(struct rendertarget *target, UINT32 width, UINT32 height)
  66 {
  67     char bmibuf[FIELD_OFFSET(BITMAPINFO, bmiColors[256])];
  68     BITMAPINFO *bmi = (BITMAPINFO*)bmibuf;
  69     HBITMAP hbm;
  70
  71     target->size.cx = width;
  72     target->size.cy = height;
  73
  74     memset(bmi, 0, sizeof(bmibuf));
  75     bmi->bmiHeader.biSize = sizeof(bmi->bmiHeader);
  76     bmi->bmiHeader.biHeight = -height;
  77     bmi->bmiHeader.biWidth = width;
  78     bmi->bmiHeader.biBitCount = 32;
  79     bmi->bmiHeader.biPlanes = 1;
  80     bmi->bmiHeader.biCompression = BI_RGB;
  81
  82     hbm = CreateDIBSection(target->hdc, bmi, DIB_RGB_COLORS, (void**)&target->dib.ptr, NULL, 0);
  83     if (!hbm) {
  84         hbm = CreateBitmap(1, 1, 1, 1, NULL);
  85         target->dib.ptr = NULL;
  86         target->dib.stride = 0;
  87         target->dib.width = 0;
  88     }
  89     else {
  90         target->dib.stride = get_dib_stride(width, 32);
  91         target->dib.width = width;
  92     }
  93
  94     DeleteObject(SelectObject(target->hdc, hbm));
  95     return S_OK;
  96 }
  97
  98 static inline struct rendertarget *impl_from_IDWriteBitmapRenderTarget1(IDWriteBitmapRenderTarget1 *iface)
  99 {
 100     return CONTAINING_RECORD(iface, struct rendertarget, IDWriteBitmapRenderTarget1_iface);
 101 }
 102
 103 static inline struct rendertarget *impl_from_ID2D1SimplifiedGeometrySink(ID2D1SimplifiedGeometrySink *iface)
 104 {
 105     return CONTAINING_RECORD(iface, struct rendertarget, ID2D1SimplifiedGeometrySink_iface);
 106 }
 107
 108 static inline struct gdiinterop *impl_from_IDWriteGdiInterop(IDWriteGdiInterop *iface)
 109 {
 110     return CONTAINING_RECORD(iface, struct gdiinterop, IDWriteGdiInterop_iface);
 111 }
 112
 113 static HRESULT WINAPI rendertarget_sink_QueryInterface(ID2D1SimplifiedGeometrySink *iface, REFIID riid, void **obj)
 114 {
 115     if (IsEqualIID(riid, &IID_ID2D1SimplifiedGeometrySink) ||
 116         IsEqualIID(riid, &IID_IUnknown))
 117     {
 118         *obj = iface;
 119         ID2D1SimplifiedGeometrySink_AddRef(iface);
 120         return S_OK;
 121     }
 122
 123     *obj = NULL;
 124
 125     return E_NOINTERFACE;
 126 }
 127
 128 static ULONG WINAPI rendertarget_sink_AddRef(ID2D1SimplifiedGeometrySink *iface)
 129 {
 130     struct rendertarget *This = impl_from_ID2D1SimplifiedGeometrySink(iface);
 131     return IDWriteBitmapRenderTarget1_AddRef(&This->IDWriteBitmapRenderTarget1_iface);
 132 }
 133
 134 static ULONG WINAPI rendertarget_sink_Release(ID2D1SimplifiedGeometrySink *iface)
 135 {
 136     struct rendertarget *This = impl_from_ID2D1SimplifiedGeometrySink(iface);
 137     return IDWriteBitmapRenderTarget1_Release(&This->IDWriteBitmapRenderTarget1_iface);
 138 }
 139
 140 static void WINAPI rendertarget_sink_SetFillMode(ID2D1SimplifiedGeometrySink *iface, D2D1_FILL_MODE mode)
 141 {
 142     struct rendertarget *This = impl_from_ID2D1SimplifiedGeometrySink(iface);
 143     SetPolyFillMode(This->hdc, mode == D2D1_FILL_MODE_ALTERNATE ? ALTERNATE : WINDING);
 144 }
 145
 146 static void WINAPI rendertarget_sink_SetSegmentFlags(ID2D1SimplifiedGeometrySink *iface, D2D1_PATH_SEGMENT vertexFlags)
 147 {
 148 }
 149
 150 static void WINAPI rendertarget_sink_BeginFigure(ID2D1SimplifiedGeometrySink *iface, D2D1_POINT_2F startPoint, D2D1_FIGURE_BEGIN figureBegin)
 151 {
 152     struct rendertarget *This = impl_from_ID2D1SimplifiedGeometrySink(iface);
 153     MoveToEx(This->hdc, startPoint.x, startPoint.y, NULL);
 154 }
 155
 156 static void WINAPI rendertarget_sink_AddLines(ID2D1SimplifiedGeometrySink *iface, const D2D1_POINT_2F *points, UINT32 count)
 157 {
 158     struct rendertarget *This = impl_from_ID2D1SimplifiedGeometrySink(iface);
 159
 160     while (count--) {
 161         LineTo(This->hdc, points->x, points->y);
 162         points++;
 163     }
 164 }
 165
 166 static void WINAPI rendertarget_sink_AddBeziers(ID2D1SimplifiedGeometrySink *iface, const D2D1_BEZIER_SEGMENT *beziers, UINT32 count)
 167 {
 168     struct rendertarget *This = impl_from_ID2D1SimplifiedGeometrySink(iface);
 169     POINT points[3];
 170
 171     while (count--) {
 172         points[0].x = beziers->point1.x;
 173         points[0].y = beziers->point1.y;
 174         points[1].x = beziers->point2.x;
 175         points[1].y = beziers->point2.y;
 176         points[2].x = beziers->point3.x;
 177         points[2].y = beziers->point3.y;
 178
 179         PolyBezierTo(This->hdc, points, 3);
 180         beziers++;
 181     }
 182 }
 183
 184 static void WINAPI rendertarget_sink_EndFigure(ID2D1SimplifiedGeometrySink *iface, D2D1_FIGURE_END figureEnd)
 185 {
 186     struct rendertarget *This = impl_from_ID2D1SimplifiedGeometrySink(iface);
 187     CloseFigure(This->hdc);
 188 }
 189
 190 static HRESULT WINAPI rendertarget_sink_Close(ID2D1SimplifiedGeometrySink *iface)
 191 {
 192     return S_OK;
 193 }
 194
 195 static const ID2D1SimplifiedGeometrySinkVtbl rendertargetsinkvtbl = {
 196     rendertarget_sink_QueryInterface,
 197     rendertarget_sink_AddRef,
 198     rendertarget_sink_Release,
 199     rendertarget_sink_SetFillMode,
 200     rendertarget_sink_SetSegmentFlags,
 201     rendertarget_sink_BeginFigure,
 202     rendertarget_sink_AddLines,
 203     rendertarget_sink_AddBeziers,
 204     rendertarget_sink_EndFigure,
 205     rendertarget_sink_Close
 206 };
 207
 208 static HRESULT WINAPI rendertarget_QueryInterface(IDWriteBitmapRenderTarget1 *iface, REFIID riid, void **obj)
 209 {
 210     struct rendertarget *This = impl_from_IDWriteBitmapRenderTarget1(iface);
 211
 212     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), obj);
 213
 214     if (IsEqualIID(riid, &IID_IDWriteBitmapRenderTarget1) ||
 215         IsEqualIID(riid, &IID_IDWriteBitmapRenderTarget) ||
 216         IsEqualIID(riid, &IID_IUnknown))
 217     {
 218         *obj = iface;
 219         IDWriteBitmapRenderTarget1_AddRef(iface);
 220         return S_OK;
 221     }
 222
 223     *obj = NULL;
 224
 225     return E_NOINTERFACE;
 226 }
 227
 228 static ULONG WINAPI rendertarget_AddRef(IDWriteBitmapRenderTarget1 *iface)
 229 {
 230     struct rendertarget *This = impl_from_IDWriteBitmapRenderTarget1(iface);
 231     ULONG ref = InterlockedIncrement(&This->ref);
 232     TRACE("(%p)->(%d)\n", This, ref);
 233     return ref;
 234 }
 235
 236 static ULONG WINAPI rendertarget_Release(IDWriteBitmapRenderTarget1 *iface)
 237 {
 238     struct rendertarget *This = impl_from_IDWriteBitmapRenderTarget1(iface);
 239     ULONG ref = InterlockedDecrement(&This->ref);
 240
 241     TRACE("(%p)->(%d)\n", This, ref);
 242
 243     if (!ref)
 244     {
 245         IDWriteFactory_Release(This->factory);
 246         DeleteDC(This->hdc);
 247         heap_free(This);
 248     }
 249
 250     return ref;
 251 }
 252
 253 static inline DWORD *get_pixel_ptr_32(struct dib_data *dib, int x, int y)
 254 {
 255     return (DWORD *)((BYTE*)dib->ptr + y * dib->stride + x * 4);
 256 }
 257
 258 static void blit_8(struct dib_data *dib, const BYTE *src, const RECT *rect, DWORD text_pixel)
 259 {
 260     DWORD *dst_ptr = get_pixel_ptr_32(dib, rect->left, rect->top);
 261     int x, y, src_width = rect->right - rect->left;
 262
 263     for (y = rect->top; y < rect->bottom; y++) {
 264         for (x = 0; x < src_width; x++) {
 265             if (src[x] < DWRITE_ALPHA_MAX) continue;
 266             dst_ptr[x] = text_pixel;
 267         }
 268
 269         src += src_width;
 270         dst_ptr += dib->stride / 4;
 271     }
 272 }
 273
 274 static inline BYTE blend_color(BYTE dst, BYTE src, BYTE alpha)
 275 {
 276     return (src * alpha + dst * (255 - alpha) + 127) / 255;
 277 }
 278
 279 static inline DWORD blend_subpixel(BYTE r, BYTE g, BYTE b, DWORD text, const BYTE *alpha)
 280 {
 281     return blend_color(r, text >> 16, alpha[0]) << 16 |
 282            blend_color(g, text >> 8,  alpha[1]) << 8  |
 283            blend_color(b, text,       alpha[2]);
 284 }
 285
 286 static void blit_subpixel_888(struct dib_data *dib, int dib_width, const BYTE *src,
 287     const RECT *rect, DWORD text_pixel)
 288 {
 289     DWORD *dst_ptr = get_pixel_ptr_32(dib, rect->left, rect->top);
 290     int x, y, src_width = rect->right - rect->left;
 291
 292     for (y = rect->top; y < rect->bottom; y++) {
 293         for (x = 0; x < src_width; x++) {
 294             if (src[3*x] == 0 && src[3*x+1] == 0 && src[3*x+2] == 0) continue;
 295             dst_ptr[x] = blend_subpixel(dst_ptr[x] >> 16, dst_ptr[x] >> 8, dst_ptr[x], text_pixel, &src[3*x]);
 296         }
 297         dst_ptr += dib->stride / 4;
 298         src += src_width * 3;
 299     }
 300 }
 301
 302 static inline DWORD colorref_to_pixel_888(COLORREF color)
 303 {
 304     return (((color >> 16) & 0xff) | (color & 0xff00) | ((color << 16) & 0xff0000));
 305 }
 306
 307 static HRESULT WINAPI rendertarget_DrawGlyphRun(IDWriteBitmapRenderTarget1 *iface,
 308     FLOAT originX, FLOAT originY, DWRITE_MEASURING_MODE measuring_mode,
 309     DWRITE_GLYPH_RUN const *run, IDWriteRenderingParams *params, COLORREF color,
 310     RECT *bbox_ret)
 311 {
 312     struct rendertarget *This = impl_from_IDWriteBitmapRenderTarget1(iface);
 313     IDWriteGlyphRunAnalysis *analysis;
 314     DWRITE_RENDERING_MODE rendermode;
 315     DWRITE_TEXTURE_TYPE texturetype;
 316     IDWriteFontFace1 *fontface1;
 317     RECT target, bounds;
 318     HRESULT hr;
 319
 320     TRACE("(%p)->(%.2f %.2f %d %p %p 0x%08x %p)\n", This, originX, originY,
 321         measuring_mode, run, params, color, bbox_ret);
 322
 323     SetRectEmpty(bbox_ret);
 324
 325     if (!This->dib.ptr)
 326         return S_OK;
 327
 328     hr = IDWriteFontFace_QueryInterface(run->fontFace, &IID_IDWriteFontFace1, (void**)&fontface1);
 329     if (hr == S_OK) {
 330         hr = IDWriteFontFace1_GetRecommendedRenderingMode(fontface1, run->fontEmSize, This->ppdip * 96.0f,
 331             This->ppdip * 96.0f, NULL, run->isSideways, DWRITE_OUTLINE_THRESHOLD_ALIASED, measuring_mode,
 332             &rendermode);
 333         IDWriteFontFace1_Release(fontface1);
 334     }
 335     else
 336         hr = IDWriteFontFace_GetRecommendedRenderingMode(run->fontFace, run->fontEmSize,
 337             This->ppdip, measuring_mode, params, &rendermode);
 338
 339     if (FAILED(hr))
 340         return hr;
 341
 342     target.left = target.top = 0;
 343     target.right = This->size.cx;
 344     target.bottom = This->size.cy;
 345
 346     if (rendermode == DWRITE_RENDERING_MODE_OUTLINE) {
 347         static const XFORM identity = { 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f };
 348         const DWRITE_MATRIX *m = &This->m;
 349         XFORM xform;
 350
 351         /* target allows any transform to be set, filter it here */
 352         if (m->m11 * m->m22 == m->m12 * m->m21) {
 353             xform.eM11 = 1.0f;
 354             xform.eM12 = 0.0f;
 355             xform.eM21 = 0.0f;
 356             xform.eM22 = 1.0f;
 357             xform.eDx  = originX;
 358             xform.eDy  = originY;
 359         } else {
 360             xform.eM11 = m->m11;
 361             xform.eM12 = m->m12;
 362             xform.eM21 = m->m21;
 363             xform.eM22 = m->m22;
 364             xform.eDx  = m->m11 * originX + m->m21 * originY + m->dx;
 365             xform.eDy  = m->m12 * originX + m->m22 * originY + m->dy;
 366         }
 367         SetWorldTransform(This->hdc, &xform);
 368
 369         BeginPath(This->hdc);
 370
 371         hr = IDWriteFontFace_GetGlyphRunOutline(run->fontFace, run->fontEmSize * This->ppdip,
 372             run->glyphIndices, run->glyphAdvances, run->glyphOffsets, run->glyphCount,
 373             run->isSideways, run->bidiLevel & 1, &This->ID2D1SimplifiedGeometrySink_iface);
 374
 375         EndPath(This->hdc);
 376
 377         if (hr == S_OK) {
 378             HBRUSH brush = CreateSolidBrush(color);
 379
 380             SelectObject(This->hdc, brush);
 381
 382             FillPath(This->hdc);
 383
 384             /* FIXME: one way to get affected rectangle bounds is to use region fill */
 385             if (bbox_ret)
 386                 *bbox_ret = target;
 387
 388             DeleteObject(brush);
 389         }
 390
 391         SetWorldTransform(This->hdc, &identity);
 392
 393         return hr;
 394     }
 395
 396     hr = IDWriteFactory_CreateGlyphRunAnalysis(This->factory,
 397         run, This->ppdip, &This->m, rendermode, measuring_mode,
 398         originX, originY, &analysis);
 399     if (FAILED(hr)) {
 400         WARN("failed to create analysis instance, 0x%08x\n", hr);
 401         return hr;
 402     }
 403
 404     SetRectEmpty(&bounds);
 405     texturetype = DWRITE_TEXTURE_ALIASED_1x1;
 406     hr = IDWriteGlyphRunAnalysis_GetAlphaTextureBounds(analysis, DWRITE_TEXTURE_ALIASED_1x1, &bounds);
 407     if (FAILED(hr) || IsRectEmpty(&bounds)) {
 408         hr = IDWriteGlyphRunAnalysis_GetAlphaTextureBounds(analysis, DWRITE_TEXTURE_CLEARTYPE_3x1, &bounds);
 409         if (FAILED(hr)) {
 410             WARN("GetAlphaTextureBounds() failed, 0x%08x\n", hr);
 411             IDWriteGlyphRunAnalysis_Release(analysis);
 412             return hr;
 413         }
 414         texturetype = DWRITE_TEXTURE_CLEARTYPE_3x1;
 415     }
 416
 417     if (IntersectRect(&target, &target, &bounds)) {
 418         UINT32 size = (target.right - target.left) * (target.bottom - target.top);
 419         BYTE *bitmap;
 420
 421         color = colorref_to_pixel_888(color);
 422         if (texturetype == DWRITE_TEXTURE_CLEARTYPE_3x1)
 423             size *= 3;
 424         bitmap = heap_alloc_zero(size);
 425         if (!bitmap) {
 426             IDWriteGlyphRunAnalysis_Release(analysis);
 427             return E_OUTOFMEMORY;
 428         }
 429
 430         hr = IDWriteGlyphRunAnalysis_CreateAlphaTexture(analysis, texturetype, &target, bitmap, size);
 431         if (hr == S_OK) {
 432             /* blit to target dib */
 433             if (texturetype == DWRITE_TEXTURE_ALIASED_1x1)
 434                 blit_8(&This->dib, bitmap, &target, color);
 435             else
 436                 blit_subpixel_888(&This->dib, This->size.cx, bitmap, &target, color);
 437
 438             if (bbox_ret) *bbox_ret = target;
 439         }
 440
 441         heap_free(bitmap);
 442     }
 443
 444     IDWriteGlyphRunAnalysis_Release(analysis);
 445
 446     return S_OK;
 447 }
 448
 449 static HDC WINAPI rendertarget_GetMemoryDC(IDWriteBitmapRenderTarget1 *iface)
 450 {
 451     struct rendertarget *This = impl_from_IDWriteBitmapRenderTarget1(iface);
 452     TRACE("(%p)\n", This);
 453     return This->hdc;
 454 }
 455
 456 static FLOAT WINAPI rendertarget_GetPixelsPerDip(IDWriteBitmapRenderTarget1 *iface)
 457 {
 458     struct rendertarget *This = impl_from_IDWriteBitmapRenderTarget1(iface);
 459     TRACE("(%p)\n", This);
 460     return This->ppdip;
 461 }
 462
 463 static HRESULT WINAPI rendertarget_SetPixelsPerDip(IDWriteBitmapRenderTarget1 *iface, FLOAT ppdip)
 464 {
 465     struct rendertarget *This = impl_from_IDWriteBitmapRenderTarget1(iface);
 466
 467     TRACE("(%p)->(%.2f)\n", This, ppdip);
 468
 469     if (ppdip <= 0.0f)
 470         return E_INVALIDARG;
 471
 472     This->ppdip = ppdip;
 473     return S_OK;
 474 }
 475
 476 static HRESULT WINAPI rendertarget_GetCurrentTransform(IDWriteBitmapRenderTarget1 *iface, DWRITE_MATRIX *transform)
 477 {
 478     struct rendertarget *This = impl_from_IDWriteBitmapRenderTarget1(iface);
 479
 480     TRACE("(%p)->(%p)\n", This, transform);
 481
 482     *transform = This->m;
 483     return S_OK;
 484 }
 485
 486 static HRESULT WINAPI rendertarget_SetCurrentTransform(IDWriteBitmapRenderTarget1 *iface, DWRITE_MATRIX const *transform)
 487 {
 488     struct rendertarget *This = impl_from_IDWriteBitmapRenderTarget1(iface);
 489
 490     TRACE("(%p)->(%p)\n", This, transform);
 491
 492     This->m = transform ? *transform : identity;
 493     return S_OK;
 494 }
 495
 496 static HRESULT WINAPI rendertarget_GetSize(IDWriteBitmapRenderTarget1 *iface, SIZE *size)
 497 {
 498     struct rendertarget *This = impl_from_IDWriteBitmapRenderTarget1(iface);
 499
 500     TRACE("(%p)->(%p)\n", This, size);
 501     *size = This->size;
 502     return S_OK;
 503 }
 504
 505 static HRESULT WINAPI rendertarget_Resize(IDWriteBitmapRenderTarget1 *iface, UINT32 width, UINT32 height)
 506 {
 507     struct rendertarget *This = impl_from_IDWriteBitmapRenderTarget1(iface);
 508
 509     TRACE("(%p)->(%u %u)\n", This, width, height);
 510
 511     if (This->size.cx == width && This->size.cy == height)
 512         return S_OK;
 513
 514     return create_target_dibsection(This, width, height);
 515 }
 516
 517 static DWRITE_TEXT_ANTIALIAS_MODE WINAPI rendertarget_GetTextAntialiasMode(IDWriteBitmapRenderTarget1 *iface)
 518 {
 519     struct rendertarget *This = impl_from_IDWriteBitmapRenderTarget1(iface);
 520     TRACE("(%p)\n", This);
 521     return This->antialiasmode;
 522 }
 523
 524 static HRESULT WINAPI rendertarget_SetTextAntialiasMode(IDWriteBitmapRenderTarget1 *iface, DWRITE_TEXT_ANTIALIAS_MODE mode)
 525 {
 526     struct rendertarget *This = impl_from_IDWriteBitmapRenderTarget1(iface);
 527
 528     TRACE("(%p)->(%d)\n", This, mode);
 529
 530     if ((DWORD)mode > DWRITE_TEXT_ANTIALIAS_MODE_GRAYSCALE)
 531         return E_INVALIDARG;
 532
 533     This->antialiasmode = mode;
 534     return S_OK;
 535 }
 536
 537 static const IDWriteBitmapRenderTarget1Vtbl rendertargetvtbl = {
 538     rendertarget_QueryInterface,
 539     rendertarget_AddRef,
 540     rendertarget_Release,
 541     rendertarget_DrawGlyphRun,
 542     rendertarget_GetMemoryDC,
 543     rendertarget_GetPixelsPerDip,
 544     rendertarget_SetPixelsPerDip,
 545     rendertarget_GetCurrentTransform,
 546     rendertarget_SetCurrentTransform,
 547     rendertarget_GetSize,
 548     rendertarget_Resize,
 549     rendertarget_GetTextAntialiasMode,
 550     rendertarget_SetTextAntialiasMode
 551 };
 552
 553 static HRESULT create_rendertarget(IDWriteFactory *factory, HDC hdc, UINT32 width, UINT32 height, IDWriteBitmapRenderTarget **ret)
 554 {
 555     struct rendertarget *target;
 556     HRESULT hr;
 557
 558     *ret = NULL;
 559
 560     target = heap_alloc(sizeof(struct rendertarget));
 561     if (!target) return E_OUTOFMEMORY;
 562
 563     target->IDWriteBitmapRenderTarget1_iface.lpVtbl = &rendertargetvtbl;
 564     target->ID2D1SimplifiedGeometrySink_iface.lpVtbl = &rendertargetsinkvtbl;
 565     target->ref = 1;
 566
 567     target->hdc = CreateCompatibleDC(hdc);
 568     SetGraphicsMode(target->hdc, GM_ADVANCED);
 569     hr = create_target_dibsection(target, width, height);
 570     if (FAILED(hr)) {
 571         IDWriteBitmapRenderTarget1_Release(&target->IDWriteBitmapRenderTarget1_iface);
 572         return hr;
 573     }
 574
 575     target->m = identity;
 576     target->ppdip = GetDeviceCaps(target->hdc, LOGPIXELSX) / 96.0f;
 577     target->antialiasmode = DWRITE_TEXT_ANTIALIAS_MODE_CLEARTYPE;
 578     target->factory = factory;
 579     IDWriteFactory_AddRef(factory);
 580
 581     *ret = (IDWriteBitmapRenderTarget*)&target->IDWriteBitmapRenderTarget1_iface;
 582
 583     return S_OK;
 584 }
 585
 586 static HRESULT WINAPI gdiinterop_QueryInterface(IDWriteGdiInterop *iface, REFIID riid, void **obj)
 587 {
 588     struct gdiinterop *This = impl_from_IDWriteGdiInterop(iface);
 589
 590     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), obj);
 591
 592     if (IsEqualIID(riid, &IID_IDWriteGdiInterop) ||
 593         IsEqualIID(riid, &IID_IUnknown))
 594     {
 595         *obj = iface;
 596         IDWriteGdiInterop_AddRef(iface);
 597         return S_OK;
 598     }
 599
 600     *obj = NULL;
 601     return E_NOINTERFACE;
 602 }
 603
 604 static ULONG WINAPI gdiinterop_AddRef(IDWriteGdiInterop *iface)
 605 {
 606     struct gdiinterop *This = impl_from_IDWriteGdiInterop(iface);
 607     TRACE("(%p)\n", This);
 608     return IDWriteFactory2_AddRef(This->factory);
 609 }
 610
 611 static ULONG WINAPI gdiinterop_Release(IDWriteGdiInterop *iface)
 612 {
 613     struct gdiinterop *This = impl_from_IDWriteGdiInterop(iface);
 614     TRACE("(%p)\n", This);
 615     return IDWriteFactory2_Release(This->factory);
 616 }
 617
 618 static HRESULT WINAPI gdiinterop_CreateFontFromLOGFONT(IDWriteGdiInterop *iface,
 619     LOGFONTW const *logfont, IDWriteFont **font)
 620 {
 621     struct gdiinterop *This = impl_from_IDWriteGdiInterop(iface);
 622     IDWriteFontCollection *collection;
 623     IDWriteFontFamily *family;
 624     DWRITE_FONT_STYLE style;
 625     BOOL exists = FALSE;
 626     UINT32 index;
 627     HRESULT hr;
 628
 629     TRACE("(%p)->(%p %p)\n", This, logfont, font);
 630
 631     *font = NULL;
 632
 633     if (!logfont) return E_INVALIDARG;
 634
 635     hr = IDWriteFactory2_GetSystemFontCollection(This->factory, &collection, FALSE);
 636     if (FAILED(hr)) {
 637         ERR("failed to get system font collection: 0x%08x.\n", hr);
 638         return hr;
 639     }
 640
 641     hr = IDWriteFontCollection_FindFamilyName(collection, logfont->lfFaceName, &index, &exists);
 642     if (FAILED(hr)) {
 643         IDWriteFontCollection_Release(collection);
 644         goto done;
 645     }
 646
 647     if (!exists) {
 648         hr = DWRITE_E_NOFONT;
 649         goto done;
 650     }
 651
 652     hr = IDWriteFontCollection_GetFontFamily(collection, index, &family);
 653     if (FAILED(hr))
 654         goto done;
 655
 656     style = logfont->lfItalic ? DWRITE_FONT_STYLE_ITALIC : DWRITE_FONT_STYLE_NORMAL;
 657     hr = IDWriteFontFamily_GetFirstMatchingFont(family, logfont->lfWeight, DWRITE_FONT_STRETCH_NORMAL, style, font);
 658     IDWriteFontFamily_Release(family);
 659
 660 done:
 661     IDWriteFontCollection_Release(collection);
 662     return hr;
 663 }
 664
 665 static HRESULT WINAPI gdiinterop_ConvertFontToLOGFONT(IDWriteGdiInterop *iface,
 666     IDWriteFont *font, LOGFONTW *logfont, BOOL *is_systemfont)
 667 {
 668     struct gdiinterop *This = impl_from_IDWriteGdiInterop(iface);
 669     static const WCHAR enusW[] = {'e','n','-','u','s',0};
 670     DWRITE_FONT_SIMULATIONS simulations;
 671     IDWriteFontCollection *collection;
 672     IDWriteLocalizedStrings *name;
 673     IDWriteFontFamily *family;
 674     DWRITE_FONT_STYLE style;
 675     UINT32 index;
 676     BOOL exists;
 677     HRESULT hr;
 678
 679     TRACE("(%p)->(%p %p %p)\n", This, font, logfont, is_systemfont);
 680
 681     *is_systemfont = FALSE;
 682
 683     memset(logfont, 0, sizeof(*logfont));
 684
 685     if (!font)
 686         return E_INVALIDARG;
 687
 688     hr = IDWriteFont_GetFontFamily(font, &family);
 689     if (FAILED(hr))
 690         return hr;
 691
 692     hr = IDWriteFontFamily_GetFontCollection(family, &collection);
 693     IDWriteFontFamily_Release(family);
 694     if (FAILED(hr))
 695         return hr;
 696
 697     *is_systemfont = is_system_collection(collection);
 698     IDWriteFontCollection_Release(collection);
 699
 700     simulations = IDWriteFont_GetSimulations(font);
 701     style = IDWriteFont_GetStyle(font);
 702
 703     logfont->lfCharSet = DEFAULT_CHARSET;
 704     logfont->lfWeight = IDWriteFont_GetWeight(font);
 705     logfont->lfItalic = style == DWRITE_FONT_STYLE_ITALIC || (simulations & DWRITE_FONT_SIMULATIONS_OBLIQUE);
 706     logfont->lfOutPrecision = OUT_OUTLINE_PRECIS;
 707     logfont->lfFaceName[0] = 0;
 708
 709     exists = FALSE;
 710     hr = IDWriteFont_GetInformationalStrings(font, DWRITE_INFORMATIONAL_STRING_WIN32_FAMILY_NAMES, &name, &exists);
 711     if (FAILED(hr) || !exists)
 712         return hr;
 713
 714     hr = IDWriteLocalizedStrings_FindLocaleName(name, enusW, &index, &exists);
 715     if (hr == S_OK)
 716         hr = IDWriteLocalizedStrings_GetString(name, index, logfont->lfFaceName, sizeof(logfont->lfFaceName)/sizeof(WCHAR));
 717     IDWriteLocalizedStrings_Release(name);
 718     return hr;
 719 }
 720
 721 static HRESULT WINAPI gdiinterop_ConvertFontFaceToLOGFONT(IDWriteGdiInterop *iface,
 722     IDWriteFontFace *fontface, LOGFONTW *logfont)
 723 {
 724     static const WCHAR enusW[] = {'e','n','-','u','s',0};
 725     struct gdiinterop *This = impl_from_IDWriteGdiInterop(iface);
 726     IDWriteLocalizedStrings *familynames;
 727     DWRITE_FONT_SIMULATIONS simulations;
 728     DWRITE_FONT_FACE_TYPE face_type;
 729     struct dwrite_font_props props;
 730     IDWriteFontFileStream *stream;
 731     IDWriteFontFile *file = NULL;
 732     UINT32 index;
 733     BOOL exists;
 734     HRESULT hr;
 735
 736     TRACE("(%p)->(%p %p)\n", This, fontface, logfont);
 737
 738     memset(logfont, 0, sizeof(*logfont));
 739
 740     index = 1;
 741     hr = IDWriteFontFace_GetFiles(fontface, &index, &file);
 742     if (FAILED(hr) || !file)
 743         return hr;
 744
 745     hr = get_filestream_from_file(file, &stream);
 746     if (FAILED(hr)) {
 747         IDWriteFontFile_Release(file);
 748         return hr;
 749     }
 750
 751     index = IDWriteFontFace_GetIndex(fontface);
 752     face_type = IDWriteFontFace_GetType(fontface);
 753     opentype_get_font_properties(stream, face_type, index, &props);
 754     hr = opentype_get_font_familyname(stream, index, face_type, &familynames);
 755     IDWriteFontFile_Release(file);
 756     IDWriteFontFileStream_Release(stream);
 757     if (FAILED(hr))
 758         return hr;
 759
 760     simulations = IDWriteFontFace_GetSimulations(fontface);
 761
 762     logfont->lfCharSet = DEFAULT_CHARSET;
 763     logfont->lfWeight = props.weight;
 764     logfont->lfItalic = props.style == DWRITE_FONT_STYLE_ITALIC || (simulations & DWRITE_FONT_SIMULATIONS_OBLIQUE);
 765     logfont->lfOutPrecision = OUT_OUTLINE_PRECIS;
 766     logfont->lfFaceName[0] = 0;
 767
 768     exists = FALSE;
 769     hr = IDWriteLocalizedStrings_FindLocaleName(familynames, enusW, &index, &exists);
 770     if (FAILED(hr) || !exists) {
 771         /* fallback to 0 index */
 772         if (IDWriteLocalizedStrings_GetCount(familynames) > 0)
 773             index = 0;
 774         else {
 775             IDWriteLocalizedStrings_Release(familynames);
 776             return E_FAIL;
 777         }
 778     }
 779
 780     hr = IDWriteLocalizedStrings_GetString(familynames, index, logfont->lfFaceName, sizeof(logfont->lfFaceName)/sizeof(WCHAR));
 781     IDWriteLocalizedStrings_Release(familynames);
 782
 783     return hr;
 784 }
 785
 786 struct font_realization_info {
 787     DWORD size;
 788     DWORD flags;
 789     DWORD cache_num;
 790     DWORD instance_id;
 791     DWORD unk;
 792     WORD  face_index;
 793     WORD  simulations;
 794 };
 795
 796 struct font_fileinfo {
 797     FILETIME writetime;
 798     LARGE_INTEGER size;
 799     WCHAR path[1];
 800 };
 801
 802 /* Undocumented gdi32 exports, used to access actually selected font information */
 803 extern BOOL WINAPI GetFontRealizationInfo(HDC hdc, struct font_realization_info *info);
 804 extern BOOL WINAPI GetFontFileInfo(DWORD instance_id, DWORD unknown, struct font_fileinfo *info, DWORD size, DWORD *needed);
 805
 806 static HRESULT WINAPI gdiinterop_CreateFontFaceFromHdc(IDWriteGdiInterop *iface,
 807     HDC hdc, IDWriteFontFace **fontface)
 808 {
 809     struct gdiinterop *This = impl_from_IDWriteGdiInterop(iface);
 810     struct font_realization_info info;
 811     struct font_fileinfo *fileinfo;
 812     DWRITE_FONT_FILE_TYPE filetype;
 813     DWRITE_FONT_FACE_TYPE facetype;
 814     IDWriteFontFile *file;
 815     BOOL is_supported;
 816     UINT32 facenum;
 817     DWORD needed;
 818     HRESULT hr;
 819
 820     TRACE("(%p)->(%p %p)\n", This, hdc, fontface);
 821
 822     *fontface = NULL;
 823
 824     if (!hdc)
 825         return E_INVALIDARG;
 826
 827     /* get selected font id  */
 828     info.size = sizeof(info);
 829     if (!GetFontRealizationInfo(hdc, &info)) {
 830         WARN("failed to get selected font id\n");
 831         return E_FAIL;
 832     }
 833
 834     needed = 0;
 835     GetFontFileInfo(info.instance_id, 0, NULL, 0, &needed);
 836     if (needed == 0) {
 837         WARN("failed to get font file info size\n");
 838         return E_FAIL;
 839     }
 840
 841     fileinfo = heap_alloc(needed);
 842     if (!fileinfo)
 843         return E_OUTOFMEMORY;
 844
 845     if (!GetFontFileInfo(info.instance_id, 0, fileinfo, needed, &needed)) {
 846         heap_free(fileinfo);
 847         return E_FAIL;
 848     }
 849
 850     hr = IDWriteFactory2_CreateFontFileReference(This->factory, fileinfo->path, &fileinfo->writetime,
 851         &file);
 852     heap_free(fileinfo);
 853     if (FAILED(hr))
 854         return hr;
 855
 856     is_supported = FALSE;
 857     hr = IDWriteFontFile_Analyze(file, &is_supported, &filetype, &facetype, &facenum);
 858     if (FAILED(hr) || !is_supported) {
 859         IDWriteFontFile_Release(file);
 860         return hr;
 861     }
 862
 863     /* Simulations flags values match DWRITE_FONT_SIMULATIONS */
 864     hr = IDWriteFactory2_CreateFontFace(This->factory, facetype, 1, &file, info.face_index, info.simulations,
 865         fontface);
 866     IDWriteFontFile_Release(file);
 867     return hr;
 868 }
 869
 870 static HRESULT WINAPI gdiinterop_CreateBitmapRenderTarget(IDWriteGdiInterop *iface,
 871     HDC hdc, UINT32 width, UINT32 height, IDWriteBitmapRenderTarget **target)
 872 {
 873     struct gdiinterop *This = impl_from_IDWriteGdiInterop(iface);
 874     TRACE("(%p)->(%p %u %u %p)\n", This, hdc, width, height, target);
 875     return create_rendertarget((IDWriteFactory*)This->factory, hdc, width, height, target);
 876 }
 877
 878 static const struct IDWriteGdiInteropVtbl gdiinteropvtbl = {
 879     gdiinterop_QueryInterface,
 880     gdiinterop_AddRef,
 881     gdiinterop_Release,
 882     gdiinterop_CreateFontFromLOGFONT,
 883     gdiinterop_ConvertFontToLOGFONT,
 884     gdiinterop_ConvertFontFaceToLOGFONT,
 885     gdiinterop_CreateFontFaceFromHdc,
 886     gdiinterop_CreateBitmapRenderTarget
 887 };
 888
 889 HRESULT create_gdiinterop(IDWriteFactory2 *factory, IDWriteGdiInterop **ret)
 890 {
 891     struct gdiinterop *This;
 892
 893     *ret = NULL;
 894
 895     This = heap_alloc(sizeof(struct gdiinterop));
 896     if (!This) return E_OUTOFMEMORY;
 897
 898     This->IDWriteGdiInterop_iface.lpVtbl = &gdiinteropvtbl;
 899     This->factory = factory;
 900
 901     *ret= &This->IDWriteGdiInterop_iface;
 902     return S_OK;
 903 }
 904
 905 void release_gdiinterop(IDWriteGdiInterop *iface)
 906 {
 907     struct gdiinterop *interop = impl_from_IDWriteGdiInterop(iface);
 908     heap_free(interop);
 909 }