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src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot-os2-table.hh
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@@ -1,7 +1,8 @@
/*
* Copyright © 2011,2012 Google, Inc.
+ * Copyright © 2018 Ebrahim Byagowi
*
* 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
@@ -25,40 +26,135 @@
*/
#ifndef HB_OT_OS2_TABLE_HH
#define HB_OT_OS2_TABLE_HH
-#include "hb-open-type-private.hh"
+#include "hb-open-type.hh"
#include "hb-ot-os2-unicode-ranges.hh"
-#include "hb-subset-plan.hh"
-namespace OT {
+#include "hb-set.hh"
/*
* OS/2 and Windows Metrics
* https://docs.microsoft.com/en-us/typography/opentype/spec/os2
*/
-#define HB_OT_TAG_os2 HB_TAG('O','S','/','2')
+#define HB_OT_TAG_OS2 HB_TAG('O','S','/','2')
+
+
+namespace OT {
-struct os2
+struct OS2V1Tail
{
- static const hb_tag_t tableTag = HB_OT_TAG_os2;
+ bool sanitize (hb_sanitize_context_t *c) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (c->check_struct (this));
+ }
+
+ public:
+ HBUINT32 ulCodePageRange1;
+ HBUINT32 ulCodePageRange2;
+ public:
+ DEFINE_SIZE_STATIC (8);
+};
- inline bool sanitize (hb_sanitize_context_t *c) const
+struct OS2V2Tail
+{
+ bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this));
}
- inline bool subset (hb_subset_plan_t *plan) const
+ public:
+ HBINT16 sxHeight;
+ HBINT16 sCapHeight;
+ HBUINT16 usDefaultChar;
+ HBUINT16 usBreakChar;
+ HBUINT16 usMaxContext;
+ public:
+ DEFINE_SIZE_STATIC (10);
+};
+
+struct OS2V5Tail
+{
+ bool sanitize (hb_sanitize_context_t *c) const
{
- hb_blob_t *os2_blob = OT::Sanitizer<OT::os2>().sanitize (hb_face_reference_table (plan->source, HB_OT_TAG_os2));
+ TRACE_SANITIZE (this);
+ return_trace (c->check_struct (this));
+ }
+
+ public:
+ HBUINT16 usLowerOpticalPointSize;
+ HBUINT16 usUpperOpticalPointSize;
+ public:
+ DEFINE_SIZE_STATIC (4);
+};
+
+struct OS2
+{
+ static constexpr hb_tag_t tableTag = HB_OT_TAG_OS2;
+
+ bool has_data () const { return this != &Null (OS2); }
+
+ const OS2V1Tail &v1 () const { return version >= 1 ? v1X : Null (OS2V1Tail); }
+ const OS2V2Tail &v2 () const { return version >= 2 ? v2X : Null (OS2V2Tail); }
+ const OS2V5Tail &v5 () const { return version >= 5 ? v5X : Null (OS2V5Tail); }
+
+ enum selection_flag_t {
+ ITALIC = 1u<<0,
+ UNDERSCORE = 1u<<1,
+ NEGATIVE = 1u<<2,
+ OUTLINED = 1u<<3,
+ STRIKEOUT = 1u<<4,
+ BOLD = 1u<<5,
+ REGULAR = 1u<<6,
+ USE_TYPO_METRICS = 1u<<7,
+ WWS = 1u<<8,
+ OBLIQUE = 1u<<9
+ };
+
+ bool is_italic () const { return fsSelection & ITALIC; }
+ bool is_oblique () const { return fsSelection & OBLIQUE; }
+ bool is_typo_metrics () const { return fsSelection & USE_TYPO_METRICS; }
+
+ enum width_class_t {
+ FWIDTH_ULTRA_CONDENSED = 1, /* 50% */
+ FWIDTH_EXTRA_CONDENSED = 2, /* 62.5% */
+ FWIDTH_CONDENSED = 3, /* 75% */
+ FWIDTH_SEMI_CONDENSED = 4, /* 87.5% */
+ FWIDTH_NORMAL = 5, /* 100% */
+ FWIDTH_SEMI_EXPANDED = 6, /* 112.5% */
+ FWIDTH_EXPANDED = 7, /* 125% */
+ FWIDTH_EXTRA_EXPANDED = 8, /* 150% */
+ FWIDTH_ULTRA_EXPANDED = 9 /* 200% */
+ };
+
+ float get_width () const
+ {
+ switch (usWidthClass) {
+ case FWIDTH_ULTRA_CONDENSED:return 50.f;
+ case FWIDTH_EXTRA_CONDENSED:return 62.5f;
+ case FWIDTH_CONDENSED: return 75.f;
+ case FWIDTH_SEMI_CONDENSED: return 87.5f;
+ default:
+ case FWIDTH_NORMAL: return 100.f;
+ case FWIDTH_SEMI_EXPANDED: return 112.5f;
+ case FWIDTH_EXPANDED: return 125.f;
+ case FWIDTH_EXTRA_EXPANDED: return 150.f;
+ case FWIDTH_ULTRA_EXPANDED: return 200.f;
+ }
+ }
+
+ bool subset (hb_subset_plan_t *plan) const
+ {
+ hb_blob_t *os2_blob = hb_sanitize_context_t ().reference_table<OS2> (plan->source);
hb_blob_t *os2_prime_blob = hb_blob_create_sub_blob (os2_blob, 0, -1);
// TODO(grieger): move to hb_blob_copy_writable_or_fail
hb_blob_destroy (os2_blob);
- OT::os2 *os2_prime = (OT::os2 *) hb_blob_get_data_writable (os2_prime_blob, nullptr);
+ OS2 *os2_prime = (OS2 *) hb_blob_get_data_writable (os2_prime_blob, nullptr);
if (unlikely (!os2_prime)) {
hb_blob_destroy (os2_prime_blob);
return false;
}
@@ -66,25 +162,25 @@
find_min_and_max_codepoint (plan->unicodes, &min_cp, &max_cp);
os2_prime->usFirstCharIndex.set (min_cp);
os2_prime->usLastCharIndex.set (max_cp);
_update_unicode_ranges (plan->unicodes, os2_prime->ulUnicodeRange);
- bool result = plan->add_table (HB_OT_TAG_os2, os2_prime_blob);
+ bool result = plan->add_table (HB_OT_TAG_OS2, os2_prime_blob);
hb_blob_destroy (os2_prime_blob);
return result;
}
- inline void _update_unicode_ranges (const hb_set_t *codepoints,
+ void _update_unicode_ranges (const hb_set_t *codepoints,
HBUINT32 ulUnicodeRange[4]) const
{
for (unsigned int i = 0; i < 4; i++)
ulUnicodeRange[i].set (0);
hb_codepoint_t cp = HB_SET_VALUE_INVALID;
while (codepoints->next (&cp)) {
- unsigned int bit = hb_get_unicode_range_bit (cp);
+ unsigned int bit = _hb_ot_os2_get_unicode_range_bit (cp);
if (bit < 128)
{
unsigned int block = bit / 32;
unsigned int bit_in_block = bit % 32;
unsigned int mask = 1 << bit_in_block;
@@ -98,11 +194,11 @@
ulUnicodeRange[1].set (ulUnicodeRange[1] | (1 << 25));
}
}
}
- static inline void find_min_and_max_codepoint (const hb_set_t *codepoints,
+ static void find_min_and_max_codepoint (const hb_set_t *codepoints,
uint16_t *min_cp, /* OUT */
uint16_t *max_cp /* OUT */)
{
*min_cp = codepoints->get_min ();
*max_cp = codepoints->get_max ();
@@ -117,21 +213,25 @@
TRAD_FARSI_FONT_PAGE = 0xBB00, // Traditional Farsi Windows 3.1 font page
THAI_FONT_PAGE = 0xDE00 // Thai Windows 3.1 font page
};
// https://github.com/Microsoft/Font-Validator/blob/520aaae/OTFontFileVal/val_OS2.cs#L644-L681
- inline font_page_t get_font_page () const
+ font_page_t get_font_page () const
+ { return (font_page_t) (version == 0 ? fsSelection & 0xFF00 : 0); }
+
+ bool sanitize (hb_sanitize_context_t *c) const
{
- if (version != 0)
- return (font_page_t) 0;
- return (font_page_t) (fsSelection & 0xFF00);
+ TRACE_SANITIZE (this);
+ if (unlikely (!c->check_struct (this))) return_trace (false);
+ if (unlikely (version >= 1 && !v1X.sanitize (c))) return_trace (false);
+ if (unlikely (version >= 2 && !v2X.sanitize (c))) return_trace (false);
+ if (unlikely (version >= 5 && !v5X.sanitize (c))) return_trace (false);
+ return_trace (true);
}
public:
HBUINT16 version;
-
- /* Version 0 */
HBINT16 xAvgCharWidth;
HBUINT16 usWeightClass;
HBUINT16 usWidthClass;
HBUINT16 fsType;
HBINT16 ySubscriptXSize;
@@ -154,28 +254,15 @@
HBINT16 sTypoAscender;
HBINT16 sTypoDescender;
HBINT16 sTypoLineGap;
HBUINT16 usWinAscent;
HBUINT16 usWinDescent;
-
- /* Version 1 */
- //HBUINT32 ulCodePageRange1;
- //HBUINT32 ulCodePageRange2;
-
- /* Version 2 */
- //HBINT16 sxHeight;
- //HBINT16 sCapHeight;
- //HBUINT16 usDefaultChar;
- //HBUINT16 usBreakChar;
- //HBUINT16 usMaxContext;
-
- /* Version 5 */
- //HBUINT16 usLowerOpticalPointSize;
- //HBUINT16 usUpperOpticalPointSize;
-
+ OS2V1Tail v1X;
+ OS2V2Tail v2X;
+ OS2V5Tail v5X;
public:
- DEFINE_SIZE_STATIC (78);
+ DEFINE_SIZE_MIN (78);
};
} /* namespace OT */
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