1 /* 2 * Copyright 2011 Google Inc. All Rights Reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SFNTLY_CPP_SRC_SFNTLY_TOOLS_SUBSETTER_SUBSETTER_H_ 18 #define SFNTLY_CPP_SRC_SFNTLY_TOOLS_SUBSETTER_SUBSETTER_H_ 19 20 #include <vector> 21 22 #include "sfntly/font.h" 23 #include "sfntly/font_factory.h" 24 #include "sfntly/table/core/cmap_table.h" 25 #include "sfntly/tools/subsetter/table_subsetter.h" 26 27 namespace sfntly { 28 29 class Subsetter : public RefCounted<Subsetter> { 30 public: 31 Subsetter(Font* font, FontFactory* font_factory); 32 virtual ~Subsetter(); 33 34 virtual void SetGlyphs(IntegerList* glyphs); 35 36 // Set the cmaps to be used in the subsetted font. The cmaps are listed in 37 // order of priority and the number parameter gives a count of how many of the 38 // list should be put into the subsetted font. If there are no matches in the 39 // font for any of the provided cmap ids which would lead to a font with no 40 // cmap then an error will be thrown during subsetting. 41 // The two most common cases would be: <list> 42 // * a list of one or more cmap ids with a count setting of 1 43 // This will use the list of cmap ids as an ordered priority and look for 44 // an available cmap in the font that matches the requests. Only the first 45 // such match will be placed in the subsetted font. 46 // * a list of one or more cmap ids with a count setting equal to the list 47 // length 48 // This will use the list of cmap ids and try to place each one specified 49 // into the subsetted font. 50 // @param cmapIds the cmap ids to use for the subsetted font 51 // @param number the maximum number of cmaps to place in the subsetted font 52 virtual void SetCMaps(CMapIdList* cmap_ids, int32_t number); 53 54 virtual void SetRemoveTables(IntegerSet* remove_tables); 55 virtual CALLER_ATTACH Font::Builder* Subset(); 56 virtual IntegerList* GlyphPermutationTable(); 57 virtual CMapIdList* CMapId(); 58 59 private: 60 FontPtr font_; 61 FontFactoryPtr font_factory_; 62 TableSubsetterList table_subsetters_; 63 64 // Settings from user 65 IntegerSet remove_tables_; 66 IntegerList new_to_old_glyphs_; 67 CMapIdList cmap_ids_; 68 }; 69 70 } // namespace sfntly 71 72 #endif // SFNTLY_CPP_SRC_SFNTLY_TOOLS_SUBSETTER_SUBSETTER_H_ 73