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Merge pull request #3011 from harfbuzz/directwrite-cleanup 

Some directwrite cleanups
This commit is contained in:
Behdad Esfahbod 2021-06-07 16:41:27 -07:00 committed by GitHub
parent 4811e8f5d7 6119ff9d80
commit a83b9b0fec
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 10 additions and 168 deletions
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178
src/hb-directwrite.cc
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@ -42,24 +42,6 @@
* Functions for using HarfBuzz with DirectWrite fonts.
**/
/* Declare object creator for dynamic support of DWRITE */
typedef HRESULT (* WINAPI t_DWriteCreateFactory)(
DWRITE_FACTORY_TYPE factoryType,
REFIID iid,
IUnknown **factory
);
/*
* hb-directwrite uses new/delete syntatically but as we let users
* to override malloc/free, we will redefine new/delete so users
* won't need to do that by their own.
*/
void* operator new (size_t size) { return malloc (size); }
void* operator new [] (size_t size) { return malloc (size); }
void operator delete (void* pointer) { free (pointer); }
void operator delete [] (void* pointer) { free (pointer); }
/*
* DirectWrite font stream helpers
*/
@ -154,7 +136,6 @@ public:
struct hb_directwrite_face_data_t
{
HMODULE dwrite_dll;
IDWriteFactory *dwriteFactory;
IDWriteFontFile *fontFile;
DWriteFontFileStream *fontFileStream;
@ -176,33 +157,12 @@ _hb_directwrite_shaper_face_data_create (hb_face_t *face)
return nullptr; \
} HB_STMT_END
data->dwrite_dll = LoadLibrary (TEXT ("DWRITE"));
if (unlikely (!data->dwrite_dll))
FAIL ("Cannot find DWrite.DLL");
t_DWriteCreateFactory p_DWriteCreateFactory;
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-function-type"
#endif
p_DWriteCreateFactory = (t_DWriteCreateFactory)
GetProcAddress (data->dwrite_dll, "DWriteCreateFactory");
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
if (unlikely (!p_DWriteCreateFactory))
FAIL ("Cannot find DWriteCreateFactory().");
HRESULT hr;
// TODO: factory and fontFileLoader should be cached separately
IDWriteFactory* dwriteFactory;
hr = p_DWriteCreateFactory (DWRITE_FACTORY_TYPE_SHARED, __uuidof (IDWriteFactory),
(IUnknown**) &dwriteFactory);
hr = DWriteCreateFactory (DWRITE_FACTORY_TYPE_SHARED, __uuidof (IDWriteFactory),
(IUnknown**) &dwriteFactory);
if (unlikely (hr != S_OK))
FAIL ("Failed to run DWriteCreateFactory().");
@ -266,8 +226,6 @@ _hb_directwrite_shaper_face_data_destroy (hb_directwrite_face_data_t *data)
delete data->fontFileStream;
if (data->faceBlob)
hb_blob_destroy (data->faceBlob);
if (data->dwrite_dll)
FreeLibrary (data->dwrite_dll);
if (data)
delete data;
}
@ -552,13 +510,12 @@ protected:
* shaper
*/
static hb_bool_t
_hb_directwrite_shape_full (hb_shape_plan_t *shape_plan,
hb_font_t *font,
hb_buffer_t *buffer,
const hb_feature_t *features,
unsigned int num_features,
float lineWidth)
hb_bool_t
_hb_directwrite_shape (hb_shape_plan_t *shape_plan,
hb_font_t *font,
hb_buffer_t *buffer,
const hb_feature_t *features,
unsigned int num_features)
{
hb_face_t *face = font->face;
const hb_directwrite_face_data_t *face_data = face->data.directwrite;
@ -725,91 +682,6 @@ retry_getglyphs:
if (FAILED (hr))
FAIL ("Analyzer failed to get glyph placements.");
IDWriteTextAnalyzer1* analyzer1;
analyzer->QueryInterface (&analyzer1);
if (analyzer1 && lineWidth)
{
DWRITE_JUSTIFICATION_OPPORTUNITY* justificationOpportunities =
new DWRITE_JUSTIFICATION_OPPORTUNITY[maxGlyphCount];
hr = analyzer1->GetJustificationOpportunities (fontFace, fontEmSize, runHead->mScript,
textLength, glyphCount, textString,
clusterMap, glyphProperties,
justificationOpportunities);
if (FAILED (hr))
FAIL ("Analyzer failed to get justification opportunities.");
float* justifiedGlyphAdvances = new float[maxGlyphCount];
DWRITE_GLYPH_OFFSET* justifiedGlyphOffsets = new DWRITE_GLYPH_OFFSET[glyphCount];
hr = analyzer1->JustifyGlyphAdvances (lineWidth, glyphCount, justificationOpportunities,
glyphAdvances, glyphOffsets, justifiedGlyphAdvances,
justifiedGlyphOffsets);
if (FAILED (hr)) FAIL ("Analyzer failed to get justify glyph advances.");
DWRITE_SCRIPT_PROPERTIES scriptProperties;
hr = analyzer1->GetScriptProperties (runHead->mScript, &scriptProperties);
if (FAILED (hr)) FAIL ("Analyzer failed to get script properties.");
uint32_t justificationCharacter = scriptProperties.justificationCharacter;
// if a script justificationCharacter is not space, it can have GetJustifiedGlyphs
if (justificationCharacter != 32)
{
uint16_t* modifiedClusterMap = new uint16_t[textLength];
retry_getjustifiedglyphs:
uint16_t* modifiedGlyphIndices = new uint16_t[maxGlyphCount];
float* modifiedGlyphAdvances = new float[maxGlyphCount];
DWRITE_GLYPH_OFFSET* modifiedGlyphOffsets = new DWRITE_GLYPH_OFFSET[maxGlyphCount];
uint32_t actualGlyphsCount;
hr = analyzer1->GetJustifiedGlyphs (fontFace, fontEmSize, runHead->mScript,
textLength, glyphCount, maxGlyphCount,
clusterMap, glyphIndices, glyphAdvances,
justifiedGlyphAdvances, justifiedGlyphOffsets,
glyphProperties, &actualGlyphsCount,
modifiedClusterMap, modifiedGlyphIndices,
modifiedGlyphAdvances, modifiedGlyphOffsets);
if (hr == HRESULT_FROM_WIN32 (ERROR_INSUFFICIENT_BUFFER))
{
maxGlyphCount = actualGlyphsCount;
delete [] modifiedGlyphIndices;
delete [] modifiedGlyphAdvances;
delete [] modifiedGlyphOffsets;
maxGlyphCount = actualGlyphsCount;
goto retry_getjustifiedglyphs;
}
if (FAILED (hr))
FAIL ("Analyzer failed to get justified glyphs.");
delete [] clusterMap;
delete [] glyphIndices;
delete [] glyphAdvances;
delete [] glyphOffsets;
glyphCount = actualGlyphsCount;
clusterMap = modifiedClusterMap;
glyphIndices = modifiedGlyphIndices;
glyphAdvances = modifiedGlyphAdvances;
glyphOffsets = modifiedGlyphOffsets;
delete [] justifiedGlyphAdvances;
delete [] justifiedGlyphOffsets;
}
else
{
delete [] glyphAdvances;
delete [] glyphOffsets;
glyphAdvances = justifiedGlyphAdvances;
glyphOffsets = justifiedGlyphOffsets;
}
delete [] justificationOpportunities;
}
/* Ok, we've got everything we need, now compose output buffer,
* very, *very*, carefully! */
@ -877,36 +749,6 @@ retry_getglyphs:
return true;
}
hb_bool_t
_hb_directwrite_shape (hb_shape_plan_t *shape_plan,
hb_font_t *font,
hb_buffer_t *buffer,
const hb_feature_t *features,
unsigned int num_features)
{
return _hb_directwrite_shape_full (shape_plan, font, buffer,
features, num_features, 0);
}
HB_UNUSED static bool
_hb_directwrite_shape_experimental_width (hb_font_t *font,
hb_buffer_t *buffer,
const hb_feature_t *features,
unsigned int num_features,
float width)
{
static const char *shapers = "directwrite";
hb_shape_plan_t *shape_plan;
shape_plan = hb_shape_plan_create_cached (font->face, &buffer->props,
features, num_features, &shapers);
hb_bool_t res = _hb_directwrite_shape_full (shape_plan, font, buffer,
features, num_features, width);
buffer->unsafe_to_break_all ();
return res;
}
struct _hb_directwrite_font_table_context {
IDWriteFontFace *face;
void *table_context;
@ -917,7 +759,7 @@ _hb_directwrite_table_data_release (void *data)
{
_hb_directwrite_font_table_context *context = (_hb_directwrite_font_table_context *) data;
context->face->ReleaseFontTable (context->table_context);
delete context;
free (context);
}
static hb_blob_t *
@ -938,7 +780,7 @@ _hb_directwrite_reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *
return nullptr;
}
_hb_directwrite_font_table_context *context = new _hb_directwrite_font_table_context;
_hb_directwrite_font_table_context *context = (_hb_directwrite_font_table_context *) malloc (sizeof (_hb_directwrite_font_table_context));
context->face = dw_face;
context->table_context = table_context;