Index: third_party/harfbuzz-ng/src/hb-uniscribe.cc |
diff --git a/third_party/harfbuzz-ng/src/hb-uniscribe.cc b/third_party/harfbuzz-ng/src/hb-uniscribe.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..ce86074ec88cdd8aeef4f80f869fe0aa011192d0 |
--- /dev/null |
+++ b/third_party/harfbuzz-ng/src/hb-uniscribe.cc |
@@ -0,0 +1,463 @@ |
+/* |
+ * Copyright © 2011 Google, Inc. |
+ * |
+ * This is part of HarfBuzz, a text shaping library. |
+ * |
+ * Permission is hereby granted, without written agreement and without |
+ * license or royalty fees, to use, copy, modify, and distribute this |
+ * software and its documentation for any purpose, provided that the |
+ * above copyright notice and the following two paragraphs appear in |
+ * all copies of this software. |
+ * |
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
+ * DAMAGE. |
+ * |
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
+ * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
+ * |
+ * Google Author(s): Behdad Esfahbod |
+ */ |
+ |
+#define _WIN32_WINNT 0x0500 |
+ |
+#include "hb-private.hh" |
+ |
+#include <windows.h> |
+#include <usp10.h> |
+ |
+typedef ULONG WIN_ULONG; |
+ |
+#include "hb-uniscribe.h" |
+ |
+#include "hb-ot-name-table.hh" |
+#include "hb-ot-tag.h" |
+ |
+#include "hb-font-private.hh" |
+#include "hb-buffer-private.hh" |
+ |
+ |
+ |
+#ifndef HB_DEBUG_UNISCRIBE |
+#define HB_DEBUG_UNISCRIBE (HB_DEBUG+0) |
+#endif |
+ |
+ |
+/* |
+DWORD GetFontData( |
+ __in HDC hdc, |
+ __in DWORD dwTable, |
+ __in DWORD dwOffset, |
+ __out LPVOID lpvBuffer, |
+ __in DWORD cbData |
+); |
+*/ |
+ |
+static bool |
+populate_log_font (LOGFONTW *lf, |
+ HDC hdc, |
+ hb_font_t *font) |
+{ |
+ memset (lf, 0, sizeof (*lf)); |
+ int dpi = GetDeviceCaps (hdc, LOGPIXELSY); |
+ lf->lfHeight = -font->y_scale; |
+ |
+ hb_blob_t *blob = Sanitizer<name>::sanitize (hb_face_reference_table (font->face, HB_TAG ('n','a','m','e'))); |
+ const name *name_table = Sanitizer<name>::lock_instance (blob); |
+ unsigned int len = name_table->get_name (3, 1, 0x409, 4, |
+ lf->lfFaceName, |
+ sizeof (lf->lfFaceName[0]) * LF_FACESIZE) |
+ / sizeof (lf->lfFaceName[0]); |
+ hb_blob_destroy (blob); |
+ |
+ if (unlikely (!len)) { |
+ DEBUG_MSG (UNISCRIBE, NULL, "Didn't find English name table entry"); |
+ return FALSE; |
+ } |
+ if (unlikely (len >= LF_FACESIZE)) { |
+ DEBUG_MSG (UNISCRIBE, NULL, "Font name too long"); |
+ return FALSE; |
+ } |
+ |
+ for (unsigned int i = 0; i < len; i++) |
+ lf->lfFaceName[i] = hb_be_uint16 (lf->lfFaceName[i]); |
+ lf->lfFaceName[len] = 0; |
+ |
+ return TRUE; |
+} |
+ |
+ |
+static hb_user_data_key_t hb_uniscribe_data_key; |
+ |
+ |
+static struct hb_uniscribe_face_data_t { |
+ HANDLE fh; |
+} _hb_uniscribe_face_data_nil = {0}; |
+ |
+static void |
+_hb_uniscribe_face_data_destroy (hb_uniscribe_face_data_t *data) |
+{ |
+ if (data->fh) |
+ RemoveFontMemResourceEx (data->fh); |
+ free (data); |
+} |
+ |
+static hb_uniscribe_face_data_t * |
+_hb_uniscribe_face_get_data (hb_face_t *face) |
+{ |
+ hb_uniscribe_face_data_t *data = (hb_uniscribe_face_data_t *) hb_face_get_user_data (face, &hb_uniscribe_data_key); |
+ if (likely (data)) return data; |
+ |
+ data = (hb_uniscribe_face_data_t *) calloc (1, sizeof (hb_uniscribe_face_data_t)); |
+ if (unlikely (!data)) |
+ return &_hb_uniscribe_face_data_nil; |
+ |
+ |
+ hb_blob_t *blob = hb_face_reference_blob (face); |
+ unsigned int blob_length; |
+ const char *blob_data = hb_blob_get_data (blob, &blob_length); |
+ if (unlikely (!blob_length)) |
+ DEBUG_MSG (UNISCRIBE, face, "Face has empty blob"); |
+ |
+ DWORD num_fonts_installed; |
+ data->fh = AddFontMemResourceEx ((void *) blob_data, blob_length, 0, &num_fonts_installed); |
+ hb_blob_destroy (blob); |
+ if (unlikely (!data->fh)) |
+ DEBUG_MSG (UNISCRIBE, face, "Face AddFontMemResourceEx() failed"); |
+ |
+ |
+ if (unlikely (!hb_face_set_user_data (face, &hb_uniscribe_data_key, data, |
+ (hb_destroy_func_t) _hb_uniscribe_face_data_destroy, |
+ FALSE))) |
+ { |
+ _hb_uniscribe_face_data_destroy (data); |
+ data = (hb_uniscribe_face_data_t *) hb_face_get_user_data (face, &hb_uniscribe_data_key); |
+ if (data) |
+ return data; |
+ else |
+ return &_hb_uniscribe_face_data_nil; |
+ } |
+ |
+ return data; |
+} |
+ |
+ |
+static struct hb_uniscribe_font_data_t { |
+ HDC hdc; |
+ LOGFONTW log_font; |
+ HFONT hfont; |
+ SCRIPT_CACHE script_cache; |
+} _hb_uniscribe_font_data_nil = {NULL, NULL, NULL}; |
+ |
+static void |
+_hb_uniscribe_font_data_destroy (hb_uniscribe_font_data_t *data) |
+{ |
+ if (data->hdc) |
+ ReleaseDC (NULL, data->hdc); |
+ if (data->hfont) |
+ DeleteObject (data->hfont); |
+ if (data->script_cache) |
+ ScriptFreeCache (&data->script_cache); |
+ free (data); |
+} |
+ |
+static hb_uniscribe_font_data_t * |
+_hb_uniscribe_font_get_data (hb_font_t *font) |
+{ |
+ hb_uniscribe_font_data_t *data = (hb_uniscribe_font_data_t *) hb_font_get_user_data (font, &hb_uniscribe_data_key); |
+ if (likely (data)) return data; |
+ |
+ data = (hb_uniscribe_font_data_t *) calloc (1, sizeof (hb_uniscribe_font_data_t)); |
+ if (unlikely (!data)) |
+ return &_hb_uniscribe_font_data_nil; |
+ |
+ data->hdc = GetDC (NULL); |
+ |
+ if (unlikely (!populate_log_font (&data->log_font, data->hdc, font))) |
+ DEBUG_MSG (UNISCRIBE, font, "Font populate_log_font() failed"); |
+ else { |
+ data->hfont = CreateFontIndirectW (&data->log_font); |
+ if (unlikely (!data->hfont)) |
+ DEBUG_MSG (UNISCRIBE, font, "Font CreateFontIndirectW() failed"); |
+ if (!SelectObject (data->hdc, data->hfont)) |
+ DEBUG_MSG (UNISCRIBE, font, "Font SelectObject() failed"); |
+ } |
+ |
+ if (unlikely (!hb_font_set_user_data (font, &hb_uniscribe_data_key, data, |
+ (hb_destroy_func_t) _hb_uniscribe_font_data_destroy, |
+ FALSE))) |
+ { |
+ _hb_uniscribe_font_data_destroy (data); |
+ data = (hb_uniscribe_font_data_t *) hb_font_get_user_data (font, &hb_uniscribe_data_key); |
+ if (data) |
+ return data; |
+ else |
+ return &_hb_uniscribe_font_data_nil; |
+ } |
+ |
+ return data; |
+} |
+ |
+LOGFONTW * |
+hb_uniscribe_font_get_logfontw (hb_font_t *font) |
+{ |
+ hb_uniscribe_font_data_t *font_data = _hb_uniscribe_font_get_data (font); |
+ if (unlikely (!font_data)) |
+ return NULL; |
+ return &font_data->log_font; |
+} |
+ |
+HFONT |
+hb_uniscribe_font_get_hfont (hb_font_t *font) |
+{ |
+ hb_uniscribe_font_data_t *font_data = _hb_uniscribe_font_get_data (font); |
+ if (unlikely (!font_data)) |
+ return 0; |
+ return font_data->hfont; |
+} |
+ |
+ |
+hb_bool_t |
+hb_uniscribe_shape (hb_font_t *font, |
+ hb_buffer_t *buffer, |
+ const hb_feature_t *features, |
+ unsigned int num_features, |
+ const char * const *shaper_options) |
+{ |
+ buffer->guess_properties (); |
+ |
+#define FAIL(...) \ |
+ HB_STMT_START { \ |
+ DEBUG_MSG (UNISCRIBE, NULL, __VA_ARGS__); \ |
+ return FALSE; \ |
+ } HB_STMT_END; |
+ |
+ hb_uniscribe_face_data_t *face_data = _hb_uniscribe_face_get_data (font->face); |
+ if (unlikely (!face_data->fh)) |
+ FAIL ("Couldn't get face data"); |
+ |
+ hb_uniscribe_font_data_t *font_data = _hb_uniscribe_font_get_data (font); |
+ if (unlikely (!font_data->hfont)) |
+ FAIL ("Couldn't get font font"); |
+ |
+ if (unlikely (!buffer->len)) |
+ return TRUE; |
+ |
+ HRESULT hr; |
+ |
+retry: |
+ |
+ unsigned int scratch_size; |
+ char *scratch = (char *) buffer->get_scratch_buffer (&scratch_size); |
+ |
+ /* Allocate char buffers; they all fit */ |
+ |
+#define ALLOCATE_ARRAY(Type, name, len) \ |
+ Type *name = (Type *) scratch; \ |
+ scratch += len * sizeof (name[0]); \ |
+ scratch_size -= len * sizeof (name[0]); |
+ |
+#define utf16_index() var1.u32 |
+ |
+ WCHAR *pchars = (WCHAR *) scratch; |
+ unsigned int chars_len = 0; |
+ for (unsigned int i = 0; i < buffer->len; i++) { |
+ hb_codepoint_t c = buffer->info[i].codepoint; |
+ buffer->info[i].utf16_index() = chars_len; |
+ if (likely (c < 0x10000)) |
+ pchars[chars_len++] = c; |
+ else if (unlikely (c >= 0x110000)) |
+ pchars[chars_len++] = 0xFFFD; |
+ else { |
+ pchars[chars_len++] = 0xD800 + ((c - 0x10000) >> 10); |
+ pchars[chars_len++] = 0xDC00 + ((c - 0x10000) & ((1 << 10) - 1)); |
+ } |
+ } |
+ |
+ ALLOCATE_ARRAY (WCHAR, wchars, chars_len); |
+ ALLOCATE_ARRAY (WORD, log_clusters, chars_len); |
+ ALLOCATE_ARRAY (SCRIPT_CHARPROP, char_props, chars_len); |
+ |
+ /* On Windows, we don't care about alignment...*/ |
+ unsigned int glyphs_size = scratch_size / (sizeof (WORD) + |
+ sizeof (SCRIPT_GLYPHPROP) + |
+ sizeof (int) + |
+ sizeof (GOFFSET) + |
+ sizeof (uint32_t)); |
+ |
+ ALLOCATE_ARRAY (WORD, glyphs, glyphs_size); |
+ ALLOCATE_ARRAY (SCRIPT_GLYPHPROP, glyph_props, glyphs_size); |
+ ALLOCATE_ARRAY (int, advances, glyphs_size); |
+ ALLOCATE_ARRAY (GOFFSET, offsets, glyphs_size); |
+ ALLOCATE_ARRAY (uint32_t, vis_clusters, glyphs_size); |
+ |
+ |
+#define MAX_ITEMS 10 |
+ |
+ SCRIPT_ITEM items[MAX_ITEMS + 1]; |
+ SCRIPT_CONTROL bidi_control = {0}; |
+ SCRIPT_STATE bidi_state = {0}; |
+ WIN_ULONG script_tags[MAX_ITEMS]; |
+ int item_count; |
+ |
+ /* MinGW32 doesn't define fMergeNeutralItems, so we bruteforce */ |
+ //bidi_control.fMergeNeutralItems = TRUE; |
+ *(uint32_t*)&bidi_control |= 1<<24; |
+ |
+ bidi_state.uBidiLevel = HB_DIRECTION_IS_FORWARD (buffer->props.direction) ? 0 : 1; |
+// bidi_state.fOverrideDirection = 1; |
+ |
+ hr = ScriptItemizeOpenType (wchars, |
+ chars_len, |
+ MAX_ITEMS, |
+ &bidi_control, |
+ &bidi_state, |
+ items, |
+ script_tags, |
+ &item_count); |
+ if (unlikely (FAILED (hr))) |
+ FAIL ("ScriptItemizeOpenType() failed: 0x%08xL", hr); |
+ |
+#undef MAX_ITEMS |
+ |
+ int *range_char_counts = NULL; |
+ TEXTRANGE_PROPERTIES **range_properties = NULL; |
+ int range_count = 0; |
+ if (num_features) { |
+ /* TODO setup ranges */ |
+ } |
+ |
+ OPENTYPE_TAG language_tag = hb_ot_tag_from_language (buffer->props.language); |
+ |
+ unsigned int glyphs_offset = 0; |
+ unsigned int glyphs_len; |
+ for (unsigned int i = 0; i < item_count; i++) |
+ { |
+ unsigned int chars_offset = items[i].iCharPos; |
+ unsigned int item_chars_len = items[i + 1].iCharPos - chars_offset; |
+ OPENTYPE_TAG script_tag = script_tags[i]; /* XXX buffer->props.script */ |
+ |
+ hr = ScriptShapeOpenType (font_data->hdc, |
+ &font_data->script_cache, |
+ &items[i].a, |
+ script_tag, |
+ language_tag, |
+ range_char_counts, |
+ range_properties, |
+ range_count, |
+ wchars + chars_offset, |
+ item_chars_len, |
+ glyphs_size - glyphs_offset, |
+ /* out */ |
+ log_clusters + chars_offset, |
+ char_props + chars_offset, |
+ glyphs + glyphs_offset, |
+ glyph_props + glyphs_offset, |
+ (int *) &glyphs_len); |
+ |
+ if (unlikely (items[i].a.fNoGlyphIndex)) |
+ FAIL ("ScriptShapeOpenType() set fNoGlyphIndex"); |
+ if (unlikely (hr == E_OUTOFMEMORY)) |
+ { |
+ buffer->ensure (buffer->allocated * 2); |
+ if (buffer->in_error) |
+ FAIL ("Buffer resize failed"); |
+ goto retry; |
+ } |
+ if (unlikely (hr == USP_E_SCRIPT_NOT_IN_FONT)) |
+ FAIL ("ScriptShapeOpenType() failed: Font doesn't support script"); |
+ if (unlikely (FAILED (hr))) |
+ FAIL ("ScriptShapeOpenType() failed: 0x%08xL", hr); |
+ |
+ hr = ScriptPlaceOpenType (font_data->hdc, |
+ &font_data->script_cache, |
+ &items[i].a, |
+ script_tag, |
+ language_tag, |
+ range_char_counts, |
+ range_properties, |
+ range_count, |
+ wchars + chars_offset, |
+ log_clusters + chars_offset, |
+ char_props + chars_offset, |
+ item_chars_len, |
+ glyphs + glyphs_offset, |
+ glyph_props + glyphs_offset, |
+ glyphs_len, |
+ /* out */ |
+ advances + glyphs_offset, |
+ offsets + glyphs_offset, |
+ NULL); |
+ if (unlikely (FAILED (hr))) |
+ FAIL ("ScriptPlaceOpenType() failed: 0x%08xL", hr); |
+ |
+ glyphs_offset += glyphs_len; |
+ } |
+ glyphs_len = glyphs_offset; |
+ |
+ /* Ok, we've got everything we need, now compose output buffer, |
+ * very, *very*, carefully! */ |
+ |
+ /* Calculate visual-clusters. That's what we ship. */ |
+ for (unsigned int i = 0; i < glyphs_len; i++) |
+ vis_clusters[i] = -1; |
+ for (unsigned int i = 0; i < buffer->len; i++) { |
+ uint32_t *p = &vis_clusters[log_clusters[buffer->info[i].utf16_index()]]; |
+ *p = MIN (*p, buffer->info[i].cluster); |
+ } |
+ if (HB_DIRECTION_IS_FORWARD (buffer->props.direction)) { |
+ for (unsigned int i = 1; i < glyphs_len; i++) |
+ if (!glyph_props[i].sva.fClusterStart) |
+ vis_clusters[i] = vis_clusters[i - 1]; |
+ } else { |
+ for (int i = glyphs_len - 2; i >= 0; i--) |
+ if (!glyph_props[i].sva.fClusterStart) |
+ vis_clusters[i] = vis_clusters[i + 1]; |
+ } |
+ |
+#undef utf16_index |
+ |
+ buffer->ensure (glyphs_len); |
+ if (buffer->in_error) |
+ FAIL ("Buffer in error"); |
+ |
+#undef FAIL |
+ |
+ /* Set glyph infos */ |
+ buffer->len = 0; |
+ for (unsigned int i = 0; i < glyphs_len; i++) |
+ { |
+ hb_glyph_info_t *info = &buffer->info[buffer->len++]; |
+ |
+ info->codepoint = glyphs[i]; |
+ info->cluster = vis_clusters[i]; |
+ |
+ /* The rest is crap. Let's store position info there for now. */ |
+ info->mask = advances[i]; |
+ info->var1.u32 = offsets[i].du; |
+ info->var2.u32 = offsets[i].dv; |
+ } |
+ |
+ /* Set glyph positions */ |
+ buffer->clear_positions (); |
+ for (unsigned int i = 0; i < glyphs_len; i++) |
+ { |
+ hb_glyph_info_t *info = &buffer->info[i]; |
+ hb_glyph_position_t *pos = &buffer->pos[i]; |
+ |
+ /* TODO vertical */ |
+ pos->x_advance = info->mask; |
+ pos->x_offset = info->var1.u32; |
+ pos->y_offset = info->var2.u32; |
+ } |
+ |
+ /* Wow, done! */ |
+ return TRUE; |
+} |
+ |
+ |