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[mort] Some Ligature work

This commit is contained in:
Behdad Esfahbod 2018-10-31 00:15:00 -07:00
parent 28b68cffe4
commit 431c6e496b
1 changed files with 31 additions and 7 deletions
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38
src/hb-aat-layout-morx-table.hh
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@ -359,19 +359,43 @@ struct ContextualSubtable
DEFINE_SIZE_STATIC (20);
};
template <typename Types>
struct LigatureSubtable
{
typedef typename Types::HBUINT HBUINT;
struct EntryData
template <bool extended>
struct LigatureEntry;
template <>
struct LigatureEntry<true>
{
typedef struct
{
HBUINT16 ligActionIndex; /* Index to the first ligActionTable entry
* for processing this group, if indicated
* by the flags. */
public:
DEFINE_SIZE_STATIC (2);
};
} EntryData;
template <typename Entry, typename Flags>
static inline unsigned int ligActionIndex (Entry &entry, Flags flags)
{ return entry->data.ligActionIndex; };
};
template <>
struct LigatureEntry<false>
{
typedef void EntryData;
template <typename Entry, typename Flags>
static inline unsigned int ligActionIndex (Entry &entry, Flags flags)
{ return flags & 0x3FFF; };
};
template <typename Types>
struct LigatureSubtable
{
typedef typename Types::HBUINT HBUINT;
typedef typename LigatureEntry<Types::extended>::EntryData EntryData;
struct driver_context_t
{
@ -436,7 +460,7 @@ struct LigatureSubtable
{
DEBUG_MSG (APPLY, nullptr, "Perform action with %d", match_length);
unsigned int end = buffer->out_len;
unsigned int action_idx = entry->data.ligActionIndex;
unsigned int action_idx = LigatureEntry<Types::extended>::ligActionIndex (entry, flags);
unsigned int action;
unsigned int ligature_idx = 0;