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      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_TABLE_BITMAP_SMALL_GLYPH_METRICS_H_
     18 #define SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_SMALL_GLYPH_METRICS_H_
     19 
     20 #include "sfntly/port/refcount.h"
     21 #include "sfntly/table/bitmap/glyph_metrics.h"
     22 
     23 namespace sfntly {
     24 
     25 class SmallGlyphMetrics : public GlyphMetrics,
     26                           public RefCounted<SmallGlyphMetrics> {
     27  public:
     28   struct Offset {
     29     enum {
     30       kMetricsLength = 5,
     31       kHeight = 0,
     32       kWidth = 1,
     33       kBearingX = 2,
     34       kBearingY = 3,
     35       kAdvance = 4,
     36     };
     37   };
     38 
     39   class Builder : public GlyphMetrics::Builder,
     40                   public RefCounted<Builder> {
     41    public:
     42     // Constructor scope altered to public because C++ does not allow base
     43     // class to instantiate derived class with protected constructors.
     44     explicit Builder(WritableFontData* data);
     45     explicit Builder(ReadableFontData* data);
     46     virtual ~Builder();
     47 
     48     int32_t Height();
     49     void SetHeight(byte_t height);
     50     int32_t Width();
     51     void SetWidth(byte_t width);
     52     int32_t BearingX();
     53     void SetBearingX(byte_t bearing);
     54     int32_t BearingY();
     55     void SetBearingY(byte_t bearing);
     56     int32_t Advance();
     57     void SetAdvance(byte_t advance);
     58 
     59     virtual CALLER_ATTACH FontDataTable* SubBuildTable(ReadableFontData* data);
     60     virtual void SubDataSet();
     61     virtual int32_t SubDataSizeToSerialize();
     62     virtual bool SubReadyToSerialize();
     63     virtual int32_t SubSerialize(WritableFontData* new_data);
     64   };
     65 
     66   explicit SmallGlyphMetrics(ReadableFontData* data);
     67   virtual ~SmallGlyphMetrics();
     68 
     69   int32_t Height();
     70   int32_t Width();
     71   int32_t BearingX();
     72   int32_t BearingY();
     73   int32_t Advance();
     74 };
     75 typedef Ptr<SmallGlyphMetrics> SmallGlyphMetricsPtr;
     76 
     77 }  // namespace sfntly
     78 
     79 #endif  // SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_SMALL_GLYPH_METRICS_H_
     80