92 lines
2.1 KiB
C++
92 lines
2.1 KiB
C++
/*
|
|
**********************************************************************
|
|
* Copyright (C) 2003-2008, International Business Machines
|
|
* Corporation and others. All Rights Reserved.
|
|
**********************************************************************
|
|
*/
|
|
|
|
#include "layout/LETypes.h"
|
|
|
|
#include "letest.h"
|
|
#include "FontTableCache.h"
|
|
|
|
#define TABLE_CACHE_INIT 5
|
|
#define TABLE_CACHE_GROW 5
|
|
|
|
struct FontTableCacheEntry
|
|
{
|
|
LETag tag;
|
|
const void *table;
|
|
};
|
|
|
|
FontTableCache::FontTableCache()
|
|
: fTableCacheCurr(0), fTableCacheSize(TABLE_CACHE_INIT)
|
|
{
|
|
fTableCache = NEW_ARRAY(FontTableCacheEntry, fTableCacheSize);
|
|
|
|
if (fTableCache == NULL) {
|
|
fTableCacheSize = 0;
|
|
return;
|
|
}
|
|
|
|
for (int i = 0; i < fTableCacheSize; i += 1) {
|
|
fTableCache[i].tag = 0;
|
|
fTableCache[i].table = NULL;
|
|
}
|
|
}
|
|
|
|
FontTableCache::~FontTableCache()
|
|
{
|
|
for (int i = fTableCacheCurr - 1; i >= 0; i -= 1) {
|
|
DELETE_ARRAY(fTableCache[i].table);
|
|
|
|
fTableCache[i].tag = 0;
|
|
fTableCache[i].table = NULL;
|
|
}
|
|
|
|
fTableCacheCurr = 0;
|
|
|
|
DELETE_ARRAY(fTableCache);
|
|
}
|
|
|
|
void FontTableCache::freeFontTable(const void *table) const
|
|
{
|
|
DELETE_ARRAY(table);
|
|
}
|
|
|
|
const void *FontTableCache::find(LETag tableTag) const
|
|
{
|
|
for (int i = 0; i < fTableCacheCurr; i += 1) {
|
|
if (fTableCache[i].tag == tableTag) {
|
|
return fTableCache[i].table;
|
|
}
|
|
}
|
|
|
|
const void *table = readFontTable(tableTag);
|
|
|
|
((FontTableCache *) this)->add(tableTag, table);
|
|
|
|
return table;
|
|
}
|
|
|
|
void FontTableCache::add(LETag tableTag, const void *table)
|
|
{
|
|
if (fTableCacheCurr >= fTableCacheSize) {
|
|
le_int32 newSize = fTableCacheSize + TABLE_CACHE_GROW;
|
|
|
|
fTableCache = (FontTableCacheEntry *) GROW_ARRAY(fTableCache, newSize);
|
|
|
|
for (le_int32 i = fTableCacheSize; i < newSize; i += 1) {
|
|
fTableCache[i].tag = 0;
|
|
fTableCache[i].table = NULL;
|
|
}
|
|
|
|
fTableCacheSize = newSize;
|
|
}
|
|
|
|
fTableCache[fTableCacheCurr].tag = tableTag;
|
|
fTableCache[fTableCacheCurr].table = table;
|
|
|
|
fTableCacheCurr += 1;
|
|
}
|