summaryrefslogtreecommitdiff
path: root/core/fxge/win32/fx_win32_dwrite.cpp
blob: 5f620cba4c4901c6e3f1743b73ad8b53dd703863 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#include "core/fxge/include/fx_ge.h"

#if _FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_DESKTOP_
#include <dwrite.h>

#include "core/fxge/include/fx_ge_win32.h"
#include "core/fxge/win32/dwrite_int.h"

typedef HRESULT(__stdcall* FuncType_DWriteCreateFactory)(
    __in DWRITE_FACTORY_TYPE,
    __in REFIID,
    __out IUnknown**);
template <typename InterfaceType>
inline void SafeRelease(InterfaceType** currentObject) {
  if (*currentObject) {
    (*currentObject)->Release();
    *currentObject = nullptr;
  }
}
template <typename InterfaceType>
inline InterfaceType* SafeAcquire(InterfaceType* newObject) {
  if (newObject) {
    newObject->AddRef();
  }
  return newObject;
}
class CDwFontFileStream final : public IDWriteFontFileStream {
 public:
  explicit CDwFontFileStream(void const* fontFileReferenceKey,
                             UINT32 fontFileReferenceKeySize);
  virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid,
                                                   void** ppvObject);
  virtual ULONG STDMETHODCALLTYPE AddRef();
  virtual ULONG STDMETHODCALLTYPE Release();
  virtual HRESULT STDMETHODCALLTYPE
  ReadFileFragment(void const** fragmentStart,
                   UINT64 fileOffset,
                   UINT64 fragmentSize,
                   OUT void** fragmentContext);
  virtual void STDMETHODCALLTYPE ReleaseFileFragment(void* fragmentContext);
  virtual HRESULT STDMETHODCALLTYPE GetFileSize(OUT UINT64* fileSize);
  virtual HRESULT STDMETHODCALLTYPE GetLastWriteTime(OUT UINT64* lastWriteTime);
  bool IsInitialized() { return !!resourcePtr_; }

 private:
  ULONG refCount_;
  void const* resourcePtr_;
  DWORD resourceSize_;
};
class CDwFontFileLoader final : public IDWriteFontFileLoader {
 public:
  virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid,
                                                   void** ppvObject);
  virtual ULONG STDMETHODCALLTYPE AddRef();
  virtual ULONG STDMETHODCALLTYPE Release();
  virtual HRESULT STDMETHODCALLTYPE
  CreateStreamFromKey(void const* fontFileReferenceKey,
                      UINT32 fontFileReferenceKeySize,
                      OUT IDWriteFontFileStream** fontFileStream);

  static IDWriteFontFileLoader* GetLoader() {
    if (!instance_) {
      instance_ = new CDwFontFileLoader();
    }
    return instance_;
  }
  static bool IsLoaderInitialized() { return !!instance_; }

 private:
  CDwFontFileLoader();
  ULONG refCount_;
  static IDWriteFontFileLoader* instance_;
};
class CDwFontContext {
 public:
  CDwFontContext(IDWriteFactory* dwriteFactory);
  ~CDwFontContext();
  HRESULT Initialize();

 private:
  CDwFontContext(CDwFontContext const&);
  void operator=(CDwFontContext const&);
  HRESULT hr_;
  IDWriteFactory* dwriteFactory_;
};
class CDwGdiTextRenderer {
 public:
  CDwGdiTextRenderer(CFX_DIBitmap* pBitmap,
                     IDWriteBitmapRenderTarget* bitmapRenderTarget,
                     IDWriteRenderingParams* renderingParams);
  ~CDwGdiTextRenderer();
  HRESULT STDMETHODCALLTYPE DrawGlyphRun(const FX_RECT& text_bbox,
                                         __in_opt CFX_ClipRgn* pClipRgn,
                                         __in_opt DWRITE_MATRIX const* pMatrix,
                                         FLOAT baselineOriginX,
                                         FLOAT baselineOriginY,
                                         DWRITE_MEASURING_MODE measuringMode,
                                         __in DWRITE_GLYPH_RUN const* glyphRun,
                                         const COLORREF& textColor);

 private:
  CFX_DIBitmap* pBitmap_;
  IDWriteBitmapRenderTarget* pRenderTarget_;
  IDWriteRenderingParams* pRenderingParams_;
};
CDWriteExt::CDWriteExt() {
  m_hModule = nullptr;
  m_pDWriteFactory = nullptr;
  m_pDwFontContext = nullptr;
  m_pDwTextRenderer = nullptr;
}
void CDWriteExt::Load() {}
void CDWriteExt::Unload() {
  if (m_pDwFontContext) {
    delete (CDwFontContext*)m_pDwFontContext;
    m_pDwFontContext = nullptr;
  }
  SafeRelease((IDWriteFactory**)&m_pDWriteFactory);
}
CDWriteExt::~CDWriteExt() {
  Unload();
}
LPVOID CDWriteExt::DwCreateFontFaceFromStream(uint8_t* pData,
                                              uint32_t size,
                                              int simulation_style) {
  IDWriteFactory* pDwFactory = (IDWriteFactory*)m_pDWriteFactory;
  IDWriteFontFile* pDwFontFile = nullptr;
  IDWriteFontFace* pDwFontFace = nullptr;
  BOOL isSupportedFontType = FALSE;
  DWRITE_FONT_FILE_TYPE fontFileType;
  DWRITE_FONT_FACE_TYPE fontFaceType;
  UINT32 numberOfFaces;
  DWRITE_FONT_SIMULATIONS fontStyle =
      (DWRITE_FONT_SIMULATIONS)(simulation_style & 3);
  HRESULT hr = S_OK;
  hr = pDwFactory->CreateCustomFontFileReference(
      (void const*)pData, (UINT32)size, CDwFontFileLoader::GetLoader(),
      &pDwFontFile);
  if (FAILED(hr)) {
    goto failed;
  }
  hr = pDwFontFile->Analyze(&isSupportedFontType, &fontFileType, &fontFaceType,
                            &numberOfFaces);
  if (FAILED(hr) || !isSupportedFontType ||
      fontFaceType == DWRITE_FONT_FACE_TYPE_UNKNOWN) {
    goto failed;
  }
  hr = pDwFactory->CreateFontFace(fontFaceType, 1, &pDwFontFile, 0, fontStyle,
                                  &pDwFontFace);
  if (FAILED(hr)) {
    goto failed;
  }
  SafeRelease(&pDwFontFile);
  return pDwFontFace;
failed:
  SafeRelease(&pDwFontFile);
  return nullptr;
}
FX_BOOL CDWriteExt::DwCreateRenderingTarget(CFX_DIBitmap* pBitmap,
                                            void** renderTarget) {
  if (pBitmap->GetFormat() > FXDIB_Argb) {
    return FALSE;
  }
  IDWriteFactory* pDwFactory = (IDWriteFactory*)m_pDWriteFactory;
  IDWriteGdiInterop* pGdiInterop = nullptr;
  IDWriteBitmapRenderTarget* pBitmapRenderTarget = nullptr;
  IDWriteRenderingParams* pRenderingParams = nullptr;
  HRESULT hr = S_OK;
  hr = pDwFactory->GetGdiInterop(&pGdiInterop);
  if (FAILED(hr)) {
    goto failed;
  }
  hr = pGdiInterop->CreateBitmapRenderTarget(
      nullptr, pBitmap->GetWidth(), pBitmap->GetHeight(), &pBitmapRenderTarget);
  if (FAILED(hr)) {
    goto failed;
  }
  hr = pDwFactory->CreateCustomRenderingParams(
      1.0f, 0.0f, 1.0f, DWRITE_PIXEL_GEOMETRY_RGB,
      DWRITE_RENDERING_MODE_DEFAULT, &pRenderingParams);
  if (FAILED(hr)) {
    goto failed;
  }
  hr = pBitmapRenderTarget->SetPixelsPerDip(1.0f);
  if (FAILED(hr)) {
    goto failed;
  }
  *(CDwGdiTextRenderer**)renderTarget =
      new CDwGdiTextRenderer(pBitmap, pBitmapRenderTarget, pRenderingParams);
  SafeRelease(&pGdiInterop);
  SafeRelease(&pBitmapRenderTarget);
  SafeRelease(&pRenderingParams);
  return TRUE;
failed:
  SafeRelease(&pGdiInterop);
  SafeRelease(&pBitmapRenderTarget);
  SafeRelease(&pRenderingParams);
  return FALSE;
}
FX_BOOL CDWriteExt::DwRendingString(void* renderTarget,
                                    CFX_ClipRgn* pClipRgn,
                                    FX_RECT& stringRect,
                                    CFX_Matrix* pMatrix,
                                    void* font,
                                    FX_FLOAT font_size,
                                    FX_ARGB text_color,
                                    int glyph_count,
                                    unsigned short* glyph_indices,
                                    FX_FLOAT baselineOriginX,
                                    FX_FLOAT baselineOriginY,
                                    void* glyph_offsets,
                                    FX_FLOAT* glyph_advances) {
  if (!renderTarget) {
    return TRUE;
  }
  CDwGdiTextRenderer* pTextRenderer = (CDwGdiTextRenderer*)renderTarget;
  DWRITE_MATRIX transform;
  DWRITE_GLYPH_RUN glyphRun;
  HRESULT hr = S_OK;
  if (pMatrix) {
    transform.m11 = pMatrix->a;
    transform.m12 = pMatrix->b;
    transform.m21 = pMatrix->c;
    transform.m22 = pMatrix->d;
    transform.dx = pMatrix->e;
    transform.dy = pMatrix->f;
  }
  glyphRun.fontFace = (IDWriteFontFace*)font;
  glyphRun.fontEmSize = font_size;
  glyphRun.glyphCount = glyph_count;
  glyphRun.glyphIndices = glyph_indices;
  glyphRun.glyphAdvances = glyph_advances;
  glyphRun.glyphOffsets = (DWRITE_GLYPH_OFFSET*)glyph_offsets;
  glyphRun.isSideways = FALSE;
  glyphRun.bidiLevel = 0;
  hr = pTextRenderer->DrawGlyphRun(
      stringRect, pClipRgn, pMatrix ? &transform : nullptr, baselineOriginX,
      baselineOriginY, DWRITE_MEASURING_MODE_NATURAL, &glyphRun,
      RGB(FXARGB_R(text_color), FXARGB_G(text_color), FXARGB_B(text_color)));
  return SUCCEEDED(hr);
}
void CDWriteExt::DwDeleteRenderingTarget(void* renderTarget) {
  delete (CDwGdiTextRenderer*)renderTarget;
}
void CDWriteExt::DwDeleteFont(void* pFont) {
  if (pFont) {
    SafeRelease((IDWriteFontFace**)&pFont);
  }
}
CDwFontFileStream::CDwFontFileStream(void const* fontFileReferenceKey,
                                     UINT32 fontFileReferenceKeySize) {
  refCount_ = 0;
  resourcePtr_ = fontFileReferenceKey;
  resourceSize_ = fontFileReferenceKeySize;
}
HRESULT STDMETHODCALLTYPE CDwFontFileStream::QueryInterface(REFIID iid,
                                                            void** ppvObject) {
  if (iid == IID_IUnknown || iid == __uuidof(IDWriteFontFileStream)) {
    *ppvObject = this;
    AddRef();
    return S_OK;
  }
  *ppvObject = nullptr;
  return E_NOINTERFACE;
}
ULONG STDMETHODCALLTYPE CDwFontFileStream::AddRef() {
  return InterlockedIncrement((long*)(&refCount_));
}
ULONG STDMETHODCALLTYPE CDwFontFileStream::Release() {
  ULONG newCount = InterlockedDecrement((long*)(&refCount_));
  if (newCount == 0) {
    delete this;
  }
  return newCount;
}
HRESULT STDMETHODCALLTYPE
CDwFontFileStream::ReadFileFragment(void const** fragmentStart,
                                    UINT64 fileOffset,
                                    UINT64 fragmentSize,
                                    OUT void** fragmentContext) {
  if (fileOffset <= resourceSize_ &&
      fragmentSize <= resourceSize_ - fileOffset) {
    *fragmentStart = static_cast<uint8_t const*>(resourcePtr_) +
                     static_cast<size_t>(fileOffset);
    *fragmentContext = nullptr;
    return S_OK;
  }
  *fragmentStart = nullptr;
  *fragmentContext = nullptr;
  return E_FAIL;
}
void STDMETHODCALLTYPE
CDwFontFileStream::ReleaseFileFragment(void* fragmentContext) {}
HRESULT STDMETHODCALLTYPE CDwFontFileStream::GetFileSize(OUT UINT64* fileSize) {
  *fileSize = resourceSize_;
  return S_OK;
}
HRESULT STDMETHODCALLTYPE
CDwFontFileStream::GetLastWriteTime(OUT UINT64* lastWriteTime) {
  *lastWriteTime = 0;
  return E_NOTIMPL;
}
IDWriteFontFileLoader* CDwFontFileLoader::instance_ = nullptr;
CDwFontFileLoader::CDwFontFileLoader() : refCount_(0) {}
HRESULT STDMETHODCALLTYPE CDwFontFileLoader::QueryInterface(REFIID iid,
                                                            void** ppvObject) {
  if (iid == IID_IUnknown || iid == __uuidof(IDWriteFontFileLoader)) {
    *ppvObject = this;
    AddRef();
    return S_OK;
  }
  *ppvObject = nullptr;
  return E_NOINTERFACE;
}
ULONG STDMETHODCALLTYPE CDwFontFileLoader::AddRef() {
  return InterlockedIncrement((long*)(&refCount_));
}
ULONG STDMETHODCALLTYPE CDwFontFileLoader::Release() {
  ULONG newCount = InterlockedDecrement((long*)(&refCount_));
  if (newCount == 0) {
    instance_ = nullptr;
    delete this;
  }
  return newCount;
}
HRESULT STDMETHODCALLTYPE CDwFontFileLoader::CreateStreamFromKey(
    void const* fontFileReferenceKey,
    UINT32 fontFileReferenceKeySize,
    OUT IDWriteFontFileStream** fontFileStream) {
  *fontFileStream = nullptr;
  CDwFontFileStream* stream =
      new CDwFontFileStream(fontFileReferenceKey, fontFileReferenceKeySize);
  if (!stream->IsInitialized()) {
    delete stream;
    return E_FAIL;
  }
  *fontFileStream = SafeAcquire(stream);
  return S_OK;
}
CDwFontContext::CDwFontContext(IDWriteFactory* dwriteFactory)
    : hr_(S_FALSE), dwriteFactory_(SafeAcquire(dwriteFactory)) {}
CDwFontContext::~CDwFontContext() {
  if (dwriteFactory_ && hr_ == S_OK) {
    dwriteFactory_->UnregisterFontFileLoader(CDwFontFileLoader::GetLoader());
  }
  SafeRelease(&dwriteFactory_);
}
HRESULT CDwFontContext::Initialize() {
  if (hr_ == S_FALSE) {
    return hr_ = dwriteFactory_->RegisterFontFileLoader(
               CDwFontFileLoader::GetLoader());
  }
  return hr_;
}
CDwGdiTextRenderer::CDwGdiTextRenderer(
    CFX_DIBitmap* pBitmap,
    IDWriteBitmapRenderTarget* bitmapRenderTarget,
    IDWriteRenderingParams* renderingParams)
    : pBitmap_(pBitmap),
      pRenderTarget_(SafeAcquire(bitmapRenderTarget)),
      pRenderingParams_(SafeAcquire(renderingParams)) {}
CDwGdiTextRenderer::~CDwGdiTextRenderer() {
  SafeRelease(&pRenderTarget_);
  SafeRelease(&pRenderingParams_);
}
STDMETHODIMP CDwGdiTextRenderer::DrawGlyphRun(
    const FX_RECT& text_bbox,
    __in_opt CFX_ClipRgn* pClipRgn,
    __in_opt DWRITE_MATRIX const* pMatrix,
    FLOAT baselineOriginX,
    FLOAT baselineOriginY,
    DWRITE_MEASURING_MODE measuringMode,
    __in DWRITE_GLYPH_RUN const* glyphRun,
    const COLORREF& textColor) {
  HRESULT hr = S_OK;
  if (pMatrix) {
    hr = pRenderTarget_->SetCurrentTransform(pMatrix);
    if (FAILED(hr)) {
      return hr;
    }
  }
  HDC hDC = pRenderTarget_->GetMemoryDC();
  HBITMAP hBitmap = (HBITMAP)::GetCurrentObject(hDC, OBJ_BITMAP);
  BITMAP bitmap;
  GetObject(hBitmap, sizeof bitmap, &bitmap);
  CFX_DIBitmap dib;
  dib.Create(bitmap.bmWidth, bitmap.bmHeight,
             bitmap.bmBitsPixel == 24 ? FXDIB_Rgb : FXDIB_Rgb32,
             (uint8_t*)bitmap.bmBits);
  dib.CompositeBitmap(text_bbox.left, text_bbox.top, text_bbox.Width(),
                      text_bbox.Height(), pBitmap_, text_bbox.left,
                      text_bbox.top, FXDIB_BLEND_NORMAL, nullptr);
  hr = pRenderTarget_->DrawGlyphRun(baselineOriginX, baselineOriginY,
                                    measuringMode, glyphRun, pRenderingParams_,
                                    textColor);
  if (FAILED(hr)) {
    return hr;
  }
  pBitmap_->CompositeBitmap(text_bbox.left, text_bbox.top, text_bbox.Width(),
                            text_bbox.Height(), &dib, text_bbox.left,
                            text_bbox.top, FXDIB_BLEND_NORMAL, pClipRgn);
  return hr;
}
#endif