HB_SHAPER_DATA_ENSURE_DECLARE(directwrite, face)
HB_SHAPER_DATA_ENSURE_DECLARE(directwrite, font)
-/*
-* shaper face data
-*/
-struct hb_directwrite_shaper_face_data_t {
- HANDLE fh;
- wchar_t face_name[LF_FACESIZE];
-};
+/*
+ * DirectWrite font stream helpers
+ */
-/* face_name should point to a wchar_t[LF_FACESIZE] object. */
-static void
-_hb_generate_unique_face_name(wchar_t *face_name, unsigned int *plen)
+// This is a font loader which provides only one font (unlike its original design).
+// For a better implementation which was also source of this
+// and DWriteFontFileStream, have a look at to NativeFontResourceDWrite.cpp in Mozilla
+class DWriteFontFileLoader : public IDWriteFontFileLoader
{
- /* We'll create a private name for the font from a UUID using a simple,
- * somewhat base64-like encoding scheme */
- const char *enc = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-";
- UUID id;
- UuidCreate ((UUID*)&id);
- ASSERT_STATIC (2 + 3 * (16 / 2) < LF_FACESIZE);
- unsigned int name_str_len = 0;
- face_name[name_str_len++] = 'F';
- face_name[name_str_len++] = '_';
- unsigned char *p = (unsigned char *)&id;
- for (unsigned int i = 0; i < 16; i += 2)
- {
- /* Spread the 16 bits from two bytes of the UUID across three chars of face_name,
- * using the bits in groups of 5,5,6 to select chars from enc.
- * This will generate 24 characters; with the 'F_' prefix we already provided,
- * the name will be 26 chars (plus the NUL terminator), so will always fit within
- * face_name (LF_FACESIZE = 32). */
- face_name[name_str_len++] = enc[p[i] >> 3];
- face_name[name_str_len++] = enc[((p[i] << 2) | (p[i + 1] >> 6)) & 0x1f];
- face_name[name_str_len++] = enc[p[i + 1] & 0x3f];
- }
- face_name[name_str_len] = 0;
- if (plen)
- *plen = name_str_len;
-}
+private:
+ IDWriteFontFileStream *mFontFileStream;
+public:
+ DWriteFontFileLoader (IDWriteFontFileStream *fontFileStream) {
+ mFontFileStream = fontFileStream;
+ }
-/* Destroys blob. */
-static hb_blob_t *
-_hb_rename_font(hb_blob_t *blob, wchar_t *new_name)
-{
- /* Create a copy of the font data, with the 'name' table replaced by a
- * table that names the font with our private F_* name created above.
- * For simplicity, we just append a new 'name' table and update the
- * sfnt directory; the original table is left in place, but unused.
- *
- * The new table will contain just 5 name IDs: family, style, unique,
- * full, PS. All of them point to the same name data with our unique name.
- */
+ // IUnknown interface
+ IFACEMETHOD(QueryInterface)(IID const& iid, OUT void** ppObject) { return S_OK; }
+ IFACEMETHOD_(ULONG, AddRef)() { return 1; }
+ IFACEMETHOD_(ULONG, Release)() { return 1; }
- blob = OT::Sanitizer<OT::OpenTypeFontFile>::sanitize (blob);
+ // IDWriteFontFileLoader methods
+ virtual HRESULT STDMETHODCALLTYPE CreateStreamFromKey(void const* fontFileReferenceKey,
+ UINT32 fontFileReferenceKeySize,
+ OUT IDWriteFontFileStream** fontFileStream)
+ {
+ *fontFileStream = mFontFileStream;
+ return S_OK;
+ }
+};
- unsigned int length, new_length, name_str_len;
- const char *orig_sfnt_data = hb_blob_get_data (blob, &length);
+class DWriteFontFileStream : public IDWriteFontFileStream
+{
+private:
+ uint8_t *mData;
+ uint32_t mSize;
+public:
+ DWriteFontFileStream(uint8_t *aData, uint32_t aSize)
+ {
+ mData = aData;
+ mSize = aSize;
+ }
- _hb_generate_unique_face_name (new_name, &name_str_len);
+ // IUnknown interface
+ IFACEMETHOD(QueryInterface)(IID const& iid, OUT void** ppObject) { return S_OK; }
+ IFACEMETHOD_(ULONG, AddRef)() { return 1; }
+ IFACEMETHOD_(ULONG, Release)() { return 1; }
- static const uint16_t name_IDs[] = { 1, 2, 3, 4, 6 };
+ // IDWriteFontFileStream methods
+ virtual HRESULT STDMETHODCALLTYPE ReadFileFragment(void const** fragmentStart,
+ UINT64 fileOffset,
+ UINT64 fragmentSize,
+ OUT void** fragmentContext)
+ {
+ // We are required to do bounds checking.
+ if (fileOffset + fragmentSize > mSize) {
+ return E_FAIL;
+ }
- unsigned int name_table_length = OT::name::min_size +
- ARRAY_LENGTH(name_IDs) * OT::NameRecord::static_size +
- name_str_len * 2; /* for name data in UTF16BE form */
- unsigned int name_table_offset = (length + 3) & ~3;
+ // truncate the 64 bit fileOffset to size_t sized index into mData
+ size_t index = static_cast<size_t> (fileOffset);
- new_length = name_table_offset + ((name_table_length + 3) & ~3);
- void *new_sfnt_data = calloc(1, new_length);
- if (!new_sfnt_data)
- {
- hb_blob_destroy (blob);
- return NULL;
+ // We should be alive for the duration of this.
+ *fragmentStart = &mData[index];
+ *fragmentContext = nullptr;
+ return S_OK;
}
- memcpy(new_sfnt_data, orig_sfnt_data, length);
+ virtual void STDMETHODCALLTYPE ReleaseFileFragment(void* fragmentContext) { }
- OT::name &name = OT::StructAtOffset<OT::name> (new_sfnt_data, name_table_offset);
- name.format.set (0);
- name.count.set (ARRAY_LENGTH (name_IDs));
- name.stringOffset.set (name.get_size());
- for (unsigned int i = 0; i < ARRAY_LENGTH (name_IDs); i++)
+ virtual HRESULT STDMETHODCALLTYPE GetFileSize(OUT UINT64* fileSize)
{
- OT::NameRecord &record = name.nameRecord[i];
- record.platformID.set(3);
- record.encodingID.set(1);
- record.languageID.set(0x0409u); /* English */
- record.nameID.set(name_IDs[i]);
- record.length.set(name_str_len * 2);
- record.offset.set(0);
- }
-
- /* Copy string data from new_name, converting wchar_t to UTF16BE. */
- unsigned char *p = &OT::StructAfter<unsigned char>(name);
- for (unsigned int i = 0; i < name_str_len; i++)
- {
- *p++ = new_name[i] >> 8;
- *p++ = new_name[i] & 0xff;
+ *fileSize = mSize;
+ return S_OK;
}
- /* Adjust name table entry to point to new name table */
- const OT::OpenTypeFontFile &file = *(OT::OpenTypeFontFile *) (new_sfnt_data);
- unsigned int face_count = file.get_face_count ();
- for (unsigned int face_index = 0; face_index < face_count; face_index++)
+ virtual HRESULT STDMETHODCALLTYPE GetLastWriteTime(OUT UINT64* lastWriteTime)
{
- /* Note: doing multiple edits (ie. TTC) can be unsafe. There may be
- * toe-stepping. But we don't really care. */
- const OT::OpenTypeFontFace &face = file.get_face (face_index);
- unsigned int index;
- if (face.find_table_index (HB_OT_TAG_name, &index))
- {
- OT::TableRecord &record = const_cast<OT::TableRecord &> (face.get_table (index));
- record.checkSum.set_for_data (&name, name_table_length);
- record.offset.set (name_table_offset);
- record.length.set (name_table_length);
- }
- else if (face_index == 0) /* Fail if first face doesn't have 'name' table. */
- {
- free (new_sfnt_data);
- hb_blob_destroy (blob);
- return NULL;
- }
+ return E_NOTIMPL;
}
+};
- /* The checkSumAdjustment field in the 'head' table is now wrong,
- * but that doesn't actually seem to cause any problems so we don't
- * bother. */
- hb_blob_destroy (blob);
- return hb_blob_create ((const char *)new_sfnt_data, new_length,
- HB_MEMORY_MODE_WRITABLE, NULL, free);
-}
+/*
+* shaper face data
+*/
+
+struct hb_directwrite_shaper_face_data_t {
+ IDWriteFactory* dwriteFactory;
+ IDWriteFontFile* fontFile;
+ IDWriteFontFileLoader* fontFileLoader;
+ IDWriteFontFace* fontFace;
+};
hb_directwrite_shaper_face_data_t *
_hb_directwrite_shaper_face_data_create(hb_face_t *face)
{
hb_directwrite_shaper_face_data_t *data =
- (hb_directwrite_shaper_face_data_t *) calloc (1, sizeof (hb_directwrite_shaper_face_data_t));
+ (hb_directwrite_shaper_face_data_t *) malloc (sizeof (hb_directwrite_shaper_face_data_t));
if (unlikely (!data))
return NULL;
- hb_blob_t *blob = hb_face_reference_blob (face);
- if (unlikely (!hb_blob_get_length (blob)))
- DEBUG_MSG(DIRECTWRITE, face, "Face has empty blob");
+ // TODO: factory and fontFileLoader should be cached separately
+ IDWriteFactory* dwriteFactory;
+ DWriteCreateFactory (
+ DWRITE_FACTORY_TYPE_SHARED,
+ __uuidof (IDWriteFactory),
+ (IUnknown**) &dwriteFactory
+ );
+
- blob = _hb_rename_font (blob, data->face_name);
- if (unlikely (!blob))
- {
- free(data);
- return NULL;
+ HRESULT hr;
+ hb_blob_t* blob = hb_face_reference_blob (face);
+ IDWriteFontFileStream *fontFileStream = new DWriteFontFileStream (
+ (uint8_t*) hb_blob_get_data (blob, NULL), hb_blob_get_length (blob));
+
+ IDWriteFontFileLoader *fontFileLoader = new DWriteFontFileLoader (fontFileStream);
+ dwriteFactory->RegisterFontFileLoader (fontFileLoader);
+
+ IDWriteFontFile *fontFile;
+ uint64_t fontFileKey = 0;
+ hr = dwriteFactory->CreateCustomFontFileReference (&fontFileKey, sizeof (fontFileKey),
+ fontFileLoader, &fontFile);
+
+#define FAIL(...) \
+ HB_STMT_START { \
+ DEBUG_MSG (DIRECTWRITE, NULL, __VA_ARGS__); \
+ return false; \
+ } HB_STMT_END;
+
+ if (FAILED (hr)) {
+ FAIL ("Failed to load font file from data!");
+ return false;
}
- DWORD num_fonts_installed;
- data->fh = AddFontMemResourceEx ((void *)hb_blob_get_data(blob, NULL),
- hb_blob_get_length (blob),
- 0, &num_fonts_installed);
- if (unlikely (!data->fh))
- {
- DEBUG_MSG (DIRECTWRITE, face, "Face AddFontMemResourceEx() failed");
- free (data);
- return NULL;
+ BOOL isSupported;
+ DWRITE_FONT_FILE_TYPE fileType;
+ DWRITE_FONT_FACE_TYPE faceType;
+ UINT32 numberOfFaces;
+ hr = fontFile->Analyze (&isSupported, &fileType, &faceType, &numberOfFaces);
+ if (FAILED (hr) || !isSupported) {
+ FAIL ("Font file is not supported.");
+ return false;
}
+#undef FAIL
+
+ IDWriteFontFace *fontFace;
+ dwriteFactory->CreateFontFace (faceType, 1, &fontFile, 0,
+ DWRITE_FONT_SIMULATIONS_NONE, &fontFace);
+
+ data->dwriteFactory = dwriteFactory;
+ data->fontFile = fontFile;
+ data->fontFileLoader = fontFileLoader;
+ data->fontFace = fontFace;
+
return data;
}
void
_hb_directwrite_shaper_face_data_destroy(hb_directwrite_shaper_face_data_t *data)
{
- RemoveFontMemResourceEx(data->fh);
- free(data);
+ data->dwriteFactory->UnregisterFontFileLoader (data->fontFileLoader);
+ delete data->fontFileLoader;
+ free (data);
}
*/
struct hb_directwrite_shaper_font_data_t {
- HDC hdc;
- LOGFONTW log_font;
- HFONT hfont;
};
-static bool
-populate_log_font (LOGFONTW *lf,
- hb_font_t *font)
-{
- memset (lf, 0, sizeof (*lf));
- lf->lfHeight = -font->y_scale;
- lf->lfCharSet = DEFAULT_CHARSET;
-
- hb_face_t *face = font->face;
- hb_directwrite_shaper_face_data_t *face_data = HB_SHAPER_DATA_GET (face);
-
- memcpy (lf->lfFaceName, face_data->face_name, sizeof (lf->lfFaceName));
-
- return true;
-}
-
hb_directwrite_shaper_font_data_t *
_hb_directwrite_shaper_font_data_create (hb_font_t *font)
{
if (unlikely (!hb_directwrite_shaper_face_data_ensure (font->face))) return NULL;
hb_directwrite_shaper_font_data_t *data =
- (hb_directwrite_shaper_font_data_t *) calloc (1, sizeof (hb_directwrite_shaper_font_data_t));
+ (hb_directwrite_shaper_font_data_t *) malloc (sizeof (hb_directwrite_shaper_font_data_t));
if (unlikely (!data))
return NULL;
- data->hdc = GetDC (NULL);
-
- if (unlikely (!populate_log_font (&data->log_font, font)))
- {
- DEBUG_MSG (DIRECTWRITE, font, "Font populate_log_font() failed");
- _hb_directwrite_shaper_font_data_destroy (data);
- return NULL;
- }
-
- data->hfont = CreateFontIndirectW (&data->log_font);
- if (unlikely (!data->hfont))
- {
- DEBUG_MSG (DIRECTWRITE, font, "Font CreateFontIndirectW() failed");
- _hb_directwrite_shaper_font_data_destroy (data);
- return NULL;
- }
-
- if (!SelectObject (data->hdc, data->hfont))
- {
- DEBUG_MSG (DIRECTWRITE, font, "Font SelectObject() failed");
- _hb_directwrite_shaper_font_data_destroy (data);
- return NULL;
- }
-
return data;
}
void
_hb_directwrite_shaper_font_data_destroy (hb_directwrite_shaper_font_data_t *data)
{
- if (data->hdc)
- ReleaseDC (NULL, data->hdc);
- if (data->hfont)
- DeleteObject (data->hfont);
free (data);
}
-LOGFONTW *
-hb_directwrite_font_get_logfontw (hb_font_t *font)
-{
- if (unlikely (!hb_directwrite_shaper_font_data_ensure (font))) return NULL;
- hb_directwrite_shaper_font_data_t *font_data = HB_SHAPER_DATA_GET (font);
- return &font_data->log_font;
-}
-
-HFONT
-hb_directwrite_font_get_hfont (hb_font_t *font)
-{
- if (unlikely (!hb_directwrite_shaper_font_data_ensure (font))) return NULL;
- hb_directwrite_shaper_font_data_t *font_data = HB_SHAPER_DATA_GET (font);
- return font_data->hfont;
-}
-
/*
* shaper shape_plan data
{
}
-// Most of here TextAnalysis is originally written by Bas Schouten for Mozilla project
+// Most of TextAnalysis is originally written by Bas Schouten for Mozilla project
// but now is relicensed to MIT for HarfBuzz use
class TextAnalysis
: public IDWriteTextAnalysisSource, public IDWriteTextAnalysisSink
Run mRunHead;
};
-static inline uint16_t hb_uint16_swap (const uint16_t v)
+static inline uint16_t hb_uint16_swap(const uint16_t v)
{ return (v >> 8) | (v << 8); }
-static inline uint32_t hb_uint32_swap (const uint32_t v)
+static inline uint32_t hb_uint32_swap(const uint32_t v)
{ return (hb_uint16_swap(v) << 16) | hb_uint16_swap(v >> 16); }
/*
hb_face_t *face = font->face;
hb_directwrite_shaper_face_data_t *face_data = HB_SHAPER_DATA_GET (face);
hb_directwrite_shaper_font_data_t *font_data = HB_SHAPER_DATA_GET (font);
-
- // factory probably should be cached
-#ifndef HB_DIRECTWRITE_EXPERIMENTAL_JUSTIFICATION
- IDWriteFactory* dwriteFactory;
-#else
- IDWriteFactory1* dwriteFactory;
-#endif
- DWriteCreateFactory (
- DWRITE_FACTORY_TYPE_SHARED,
- __uuidof (IDWriteFactory),
- (IUnknown**) &dwriteFactory
- );
-
- IDWriteGdiInterop *gdiInterop;
- dwriteFactory->GetGdiInterop (&gdiInterop);
- IDWriteFontFace* fontFace;
- gdiInterop->CreateFontFaceFromHdc (font_data->hdc, &fontFace);
+ IDWriteFactory *dwriteFactory = face_data->dwriteFactory;
+ IDWriteFontFace *fontFace = face_data->fontFace;
#ifndef HB_DIRECTWRITE_EXPERIMENTAL_JUSTIFICATION
IDWriteTextAnalyzer* analyzer;
}
}
- HRESULT hr;
// TODO: Handle TEST_DISABLE_OPTIONAL_LIGATURES
DWRITE_READING_DIRECTION readingDirection = buffer->props.direction ?
TextAnalysis analysis(textString, textLength, NULL, readingDirection);
TextAnalysis::Run *runHead;
+ HRESULT hr;
hr = analysis.GenerateResults(analyzer, &runHead);
#define FAIL(...) \
projects / platform / upstream / libHarfBuzzSharp.git / commitdiff