| /* |
| ********************************************************************** |
| * Copyright (C) 2003-2013, 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; |
| size_t length; |
| }; |
| |
| FontTableCache::FontTableCache() |
| : fTableCacheCurr(0), fTableCacheSize(TABLE_CACHE_INIT) |
| { |
| fTableCache = LE_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; |
| fTableCache[i].length = 0; |
| } |
| } |
| |
| FontTableCache::~FontTableCache() |
| { |
| for (int i = fTableCacheCurr - 1; i >= 0; i -= 1) { |
| LE_DELETE_ARRAY(fTableCache[i].table); |
| |
| fTableCache[i].tag = 0; |
| fTableCache[i].table = NULL; |
| fTableCache[i].length = 0; |
| } |
| |
| fTableCacheCurr = 0; |
| |
| LE_DELETE_ARRAY(fTableCache); |
| } |
| |
| void FontTableCache::freeFontTable(const void *table) const |
| { |
| LE_DELETE_ARRAY(table); |
| } |
| |
| const void *FontTableCache::find(LETag tableTag, size_t &length) const |
| { |
| for (int i = 0; i < fTableCacheCurr; i += 1) { |
| if (fTableCache[i].tag == tableTag) { |
| length = fTableCache[i].length; |
| return fTableCache[i].table; |
| } |
| } |
| |
| const void *table = readFontTable(tableTag, length); |
| |
| ((FontTableCache *) this)->add(tableTag, table, length); |
| |
| return table; |
| } |
| |
| void FontTableCache::add(LETag tableTag, const void *table, size_t length) |
| { |
| if (fTableCacheCurr >= fTableCacheSize) { |
| le_int32 newSize = fTableCacheSize + TABLE_CACHE_GROW; |
| |
| fTableCache = (FontTableCacheEntry *) LE_GROW_ARRAY(fTableCache, newSize); |
| |
| for (le_int32 i = fTableCacheSize; i < newSize; i += 1) { |
| fTableCache[i].tag = 0; |
| fTableCache[i].table = NULL; |
| fTableCache[i].length = 0; |
| } |
| |
| fTableCacheSize = newSize; |
| } |
| |
| fTableCache[fTableCacheCurr].tag = tableTag; |
| fTableCache[fTableCacheCurr].table = table; |
| fTableCache[fTableCacheCurr].length = length; |
| |
| fTableCacheCurr += 1; |
| } |