Visualization Library 2.0.0-b5

A lightweight C++ OpenGL middleware for 2D/3D graphics

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ftcimage.c
Go to the documentation of this file.
1 /***************************************************************************/
2 /* */
3 /* ftcimage.c */
4 /* */
5 /* FreeType Image cache (body). */
6 /* */
7 /* Copyright 2000-2001, 2003, 2004, 2006, 2010 by */
8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */
9 /* */
10 /* This file is part of the FreeType project, and may only be used, */
11 /* modified, and distributed under the terms of the FreeType project */
12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */
13 /* this file you indicate that you have read the license and */
14 /* understand and accept it fully. */
15 /* */
16 /***************************************************************************/
17 
18 
19 #include <ft2build.h>
20 #include FT_CACHE_H
21 #include "ftcimage.h"
22 #include FT_INTERNAL_MEMORY_H
23 
24 #include "ftccback.h"
25 #include "ftcerror.h"
26 
27 
28  /* finalize a given glyph image node */
29  FT_LOCAL_DEF( void )
31  FTC_Cache cache )
32  {
33  FTC_INode inode = (FTC_INode)ftcinode;
34  FT_Memory memory = cache->memory;
35 
36 
37  if ( inode->glyph )
38  {
39  FT_Done_Glyph( inode->glyph );
40  inode->glyph = NULL;
41  }
42 
43  FTC_GNode_Done( FTC_GNODE( inode ), cache );
44  FT_FREE( inode );
45  }
46 
47 
48  FT_LOCAL_DEF( void )
50  FTC_Cache cache )
51  {
52  ftc_inode_free( FTC_NODE( inode ), cache );
53  }
54 
55 
56  /* initialize a new glyph image node */
59  FTC_GQuery gquery,
60  FTC_Cache cache )
61  {
62  FT_Memory memory = cache->memory;
64  FTC_INode inode = NULL;
65 
66 
67  if ( !FT_NEW( inode ) )
68  {
69  FTC_GNode gnode = FTC_GNODE( inode );
70  FTC_Family family = gquery->family;
71  FT_UInt gindex = gquery->gindex;
73 
74 
75  /* initialize its inner fields */
76  FTC_GNode_Init( gnode, gindex, family );
77 
78  /* we will now load the glyph image */
79  error = clazz->family_load_glyph( family, gindex, cache,
80  &inode->glyph );
81  if ( error )
82  {
83  FTC_INode_Free( inode, cache );
84  inode = NULL;
85  }
86  }
87 
88  *pinode = inode;
89  return error;
90  }
91 
92 
94  ftc_inode_new( FTC_Node *ftcpinode,
95  FT_Pointer ftcgquery,
96  FTC_Cache cache )
97  {
98  FTC_INode *pinode = (FTC_INode*)ftcpinode;
99  FTC_GQuery gquery = (FTC_GQuery)ftcgquery;
100 
101 
102  return FTC_INode_New( pinode, gquery, cache );
103  }
104 
105 
108  FTC_Cache ftccache )
109  {
110  FTC_INode inode = (FTC_INode)ftcinode;
111  FT_Offset size = 0;
112  FT_Glyph glyph = inode->glyph;
113 
114  FT_UNUSED( ftccache );
115 
116 
117  switch ( glyph->format )
118  {
119  case FT_GLYPH_FORMAT_BITMAP:
120  {
121  FT_BitmapGlyph bitg;
122 
123 
124  bitg = (FT_BitmapGlyph)glyph;
125  size = bitg->bitmap.rows * ft_labs( bitg->bitmap.pitch ) +
126  sizeof ( *bitg );
127  }
128  break;
129 
131  {
132  FT_OutlineGlyph outg;
133 
134 
135  outg = (FT_OutlineGlyph)glyph;
136  size = outg->outline.n_points *
137  ( sizeof ( FT_Vector ) + sizeof ( FT_Byte ) ) +
138  outg->outline.n_contours * sizeof ( FT_Short ) +
139  sizeof ( *outg );
140  }
141  break;
142 
143  default:
144  ;
145  }
146 
147  size += sizeof ( *inode );
148  return size;
149  }
150 
151 
152 #if 0
153 
155  FTC_INode_Weight( FTC_INode inode )
156  {
157  return ftc_inode_weight( FTC_NODE( inode ), NULL );
158  }
159 
160 #endif /* 0 */
161 
162 
163 /* END */
FTC_IFamily_LoadGlyphFunc family_load_glyph
Definition: ftcimage.h:67
int FT_Error
Definition: fttypes.h:296
#define FTC_CACHE__IFAMILY_CLASS(x)
Definition: ftcimage.h:75
struct FT_OutlineGlyphRec_ * FT_OutlineGlyph
Definition: ftglyph.h:179
FT_Bitmap bitmap
Definition: ftglyph.h:165
#define NULL
Definition: ftobjs.h:61
short n_contours
Definition: ftimage.h:385
int rows
Definition: ftimage.h:312
sizeof(AF_ModuleRec)
FTC_INode_New(FTC_INode *pinode, FTC_GQuery gquery, FTC_Cache cache)
Definition: ftcimage.c:58
#define FT_UNUSED(arg)
Definition: ftconfig.h:76
int pitch
Definition: ftimage.h:314
#define FTC_NODE(x)
Definition: ftccache.h:69
struct FT_BitmapGlyphRec_ * FT_BitmapGlyph
Definition: ftglyph.h:127
ftc_inode_weight(FTC_Node ftcinode, FTC_Cache ftccache)
Definition: ftcimage.c:107
unsigned char FT_Byte
Definition: fttypes.h:150
FTC_GNode_Init(FTC_GNode gnode, FT_UInt gindex, FTC_Family family)
Definition: ftcglyph.c:31
FT_Outline outline
Definition: ftglyph.h:211
#define FT_FREE(ptr)
Definition: ftmemory.h:286
FT_Error error
Definition: cffdrivr.c:411
FTC_INode_Free(FTC_INode inode, FTC_Cache cache)
Definition: ftcimage.c:49
void * FT_Pointer
Definition: fttypes.h:307
#define FTC_GNODE(x)
Definition: ftcglyph.h:156
short n_points
Definition: ftimage.h:386
signed short FT_Short
Definition: fttypes.h:194
typedefFT_BEGIN_HEADER struct FT_MemoryRec_ * FT_Memory
Definition: ftsystem.h:66
ftc_inode_new(FTC_Node *ftcpinode, FT_Pointer ftcgquery, FTC_Cache cache)
Definition: ftcimage.c:94
FT_BEGIN_HEADER struct FTC_FamilyRec_ * FTC_Family
struct FT_Vector_ FT_Vector
FTC_GNode_Done(FTC_GNode gnode, FTC_Cache cache)
Definition: ftcglyph.c:55
FT_Glyph_Format format
Definition: ftglyph.h:112
unsigned int FT_UInt
Definition: fttypes.h:227
FT_BEGIN_HEADER struct FTC_INodeRec_ * FTC_INode
struct FTC_GQueryRec_ * FTC_GQuery
ftc_inode_free(FTC_Node ftcinode, FTC_Cache cache)
Definition: ftcimage.c:30
#define ft_labs
Definition: ftstdlib.h:145
#define FT_NEW(ptr)
Definition: ftmemory.h:288
FT_Done_Glyph(FT_Glyph glyph)
Definition: ftglyph.c:613
GLsizeiptr size
FT_Module_Constructor FT_GLYPH_FORMAT_OUTLINE
Definition: ftrend1.c:284
#define FT_LOCAL_DEF(x)
Definition: ftconfig.h:236
size_t FT_Offset
Definition: fttypes.h:320