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      1 //+--------------------------------------------------------------------------
      2 //
      3 //  Copyright (c) Microsoft Corporation.  All rights reserved.
      4 //
      5 //  Abstract:
      6 //     Public API definitions for DWrite and D2D
      7 //
      8 //----------------------------------------------------------------------------
      9 
     10 #ifndef DCOMMON_H_INCLUDED
     11 #define DCOMMON_H_INCLUDED
     12 
     13 //
     14 //These macros are defined in the Windows 7 SDK, however to enable development using the technical preview,
     15 //they are included here temporarily.
     16 //
     17 #ifndef DEFINE_ENUM_FLAG_OPERATORS
     18 #define DEFINE_ENUM_FLAG_OPERATORS(ENUMTYPE) \
     19 extern "C++" { \
     20 inline ENUMTYPE operator | (ENUMTYPE a, ENUMTYPE b) { return ENUMTYPE(((int)a) | ((int)b)); } \
     21 inline ENUMTYPE &operator |= (ENUMTYPE &a, ENUMTYPE b) { return (ENUMTYPE &)(((int &)a) |= ((int)b)); } \
     22 inline ENUMTYPE operator & (ENUMTYPE a, ENUMTYPE b) { return ENUMTYPE(((int)a) & ((int)b)); } \
     23 inline ENUMTYPE &operator &= (ENUMTYPE &a, ENUMTYPE b) { return (ENUMTYPE &)(((int &)a) &= ((int)b)); } \
     24 inline ENUMTYPE operator ~ (ENUMTYPE a) { return ENUMTYPE(~((int)a)); } \
     25 inline ENUMTYPE operator ^ (ENUMTYPE a, ENUMTYPE b) { return ENUMTYPE(((int)a) ^ ((int)b)); } \
     26 inline ENUMTYPE &operator ^= (ENUMTYPE &a, ENUMTYPE b) { return (ENUMTYPE &)(((int &)a) ^= ((int)b)); } \
     27 }
     28 #endif
     29 
     30 #ifndef __field_ecount_opt
     31 #define __field_ecount_opt(x)
     32 #endif
     33 
     34 #ifndef __range
     35 #define __range(x,y)
     36 #endif
     37 
     38 #ifndef __field_ecount
     39 #define __field_ecount(x)
     40 #endif
     41 
     42 /// <summary>
     43 /// The measuring method used for text layout.
     44 /// </summary>
     45 typedef enum DWRITE_MEASURING_MODE
     46 {
     47     /// <summary>
     48     /// Text is measured using glyph ideal metrics whose values are independent to the current display resolution.
     49     /// </summary>
     50     DWRITE_MEASURING_MODE_NATURAL,
     51 
     52     /// <summary>
     53     /// Text is measured using glyph display compatible metrics whose values tuned for the current display resolution.
     54     /// </summary>
     55     DWRITE_MEASURING_MODE_GDI_CLASSIC,
     56 
     57     /// <summary>
     58     /// Text is measured using the same glyph display metrics as text measured by GDI using a font
     59     /// created with CLEARTYPE_NATURAL_QUALITY.
     60     /// </summary>
     61     DWRITE_MEASURING_MODE_GDI_NATURAL
     62 
     63 } DWRITE_MEASURING_MODE;
     64 
     65 #endif /* DCOMMON_H_INCLUDED */
     66