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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_BIG_GLYPH_METRICS_H_
     18 #define SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_BIG_GLYPH_METRICS_H_
     19 
     20 #include "sfntly/table/bitmap/glyph_metrics.h"
     21 
     22 namespace sfntly {
     23 
     24 class BigGlyphMetrics : public GlyphMetrics,
     25                         public RefCounted<BigGlyphMetrics> {
     26  public:
     27   struct Offset {
     28     enum {
     29       kMetricsLength = 8,
     30 
     31       kHeight = 0,
     32       kWidth = 1,
     33       kHoriBearingX = 2,
     34       kHoriBearingY = 3,
     35       kHoriAdvance = 4,
     36       kVertBearingX = 5,
     37       kVertBearingY = 6,
     38       kVertAdvance = 7,
     39     };
     40   };
     41 
     42   class Builder : public GlyphMetrics::Builder,
     43                   public RefCounted<Builder> {
     44    public:
     45     // Constructor scope altered to public because C++ does not allow base
     46     // class to instantiate derived class with protected constructors.
     47     explicit Builder(WritableFontData* data);
     48     explicit Builder(ReadableFontData* data);
     49 
     50     virtual ~Builder();
     51 
     52     int32_t Height();
     53     void SetHeight(byte_t height);
     54     int32_t Width();
     55     void SetWidth(byte_t width);
     56     int32_t HoriBearingX();
     57     void SetHoriBearingX(byte_t bearing);
     58     int32_t HoriBearingY();
     59     void SetHoriBearingY(byte_t bearing);
     60     int32_t HoriAdvance();
     61     void SetHoriAdvance(byte_t advance);
     62     int32_t VertBearingX();
     63     void SetVertBearingX(byte_t bearing);
     64     int32_t VertBearingY();
     65     void SetVertBearingY(byte_t bearing);
     66     int32_t VertAdvance();
     67     void SetVertAdvance(byte_t advance);
     68 
     69     virtual CALLER_ATTACH FontDataTable* SubBuildTable(ReadableFontData* data);
     70     virtual void SubDataSet();
     71     virtual int32_t SubDataSizeToSerialize();
     72     virtual bool SubReadyToSerialize();
     73     virtual int32_t SubSerialize(WritableFontData* new_data);
     74 
     75     // Static instantiation function.
     76     static CALLER_ATTACH Builder* CreateBuilder();
     77   };
     78 
     79   explicit BigGlyphMetrics(ReadableFontData* data);
     80   virtual ~BigGlyphMetrics();
     81 
     82   int32_t Height();
     83   int32_t Width();
     84   int32_t HoriBearingX();
     85   int32_t HoriBearingY();
     86   int32_t HoriAdvance();
     87   int32_t VertBearingX();
     88   int32_t VertBearingY();
     89   int32_t VertAdvance();
     90 };
     91 typedef Ptr<BigGlyphMetrics> BigGlyphMetricsPtr;
     92 typedef Ptr<BigGlyphMetrics::Builder> BigGlyphMetricsBuilderPtr;
     93 
     94 }  // namespace sfntly
     95 
     96 #endif  // SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_BIG_GLYPH_METRICS_H_
     97