ReactOS  0.4.15-dev-494-g1d8c567
ftsynth.c File Reference
#include <ft2build.h>
Include dependency graph for ftsynth.c:

Go to the source code of this file.

Macros

#define FT_COMPONENT   trace_synth
 

Functions

 FT_GlyphSlot_Oblique (FT_GlyphSlot slot)
 
 FT_GlyphSlot_Embolden (FT_GlyphSlot slot)
 

Macro Definition Documentation

◆ FT_COMPONENT

#define FT_COMPONENT   trace_synth

Definition at line 34 of file ftsynth.c.

Function Documentation

◆ FT_GlyphSlot_Embolden()

FT_GlyphSlot_Embolden ( FT_GlyphSlot  slot)

Definition at line 90 of file ftsynth.c.

91  {
93  FT_Face face;
95  FT_Pos xstr, ystr;
96 
97 
98  if ( !slot )
99  return;
100 
101  library = slot->library;
102  face = slot->face;
103 
104  if ( slot->format != FT_GLYPH_FORMAT_OUTLINE &&
105  slot->format != FT_GLYPH_FORMAT_BITMAP )
106  return;
107 
108  /* some reasonable strength */
109  xstr = FT_MulFix( face->units_per_EM,
110  face->size->metrics.y_scale ) / 24;
111  ystr = xstr;
112 
113  if ( slot->format == FT_GLYPH_FORMAT_OUTLINE )
114  FT_Outline_EmboldenXY( &slot->outline, xstr, ystr );
115 
116  else /* slot->format == FT_GLYPH_FORMAT_BITMAP */
117  {
118  /* round to full pixels */
119  xstr &= ~63;
120  if ( xstr == 0 )
121  xstr = 1 << 6;
122  ystr &= ~63;
123 
124  /*
125  * XXX: overflow check for 16-bit system, for compatibility
126  * with FT_GlyphSlot_Embolden() since FreeType 2.1.10.
127  * unfortunately, this function return no informations
128  * about the cause of error.
129  */
130  if ( ( ystr >> 6 ) > FT_INT_MAX || ( ystr >> 6 ) < FT_INT_MIN )
131  {
132  FT_TRACE1(( "FT_GlyphSlot_Embolden:" ));
133  FT_TRACE1(( "too strong emboldening parameter ystr=%d\n", ystr ));
134  return;
135  }
137  if ( error )
138  return;
139 
140  error = FT_Bitmap_Embolden( library, &slot->bitmap, xstr, ystr );
141  if ( error )
142  return;
143  }
144 
145  if ( slot->advance.x )
146  slot->advance.x += xstr;
147 
148  if ( slot->advance.y )
149  slot->advance.y += ystr;
150 
151  slot->metrics.width += xstr;
152  slot->metrics.height += ystr;
153  slot->metrics.horiAdvance += xstr;
154  slot->metrics.vertAdvance += ystr;
155  slot->metrics.horiBearingY += ystr;
156 
157  /* XXX: 16-bit overflow case must be excluded before here */
158  if ( slot->format == FT_GLYPH_FORMAT_BITMAP )
159  slot->bitmap_top += (FT_Int)( ystr >> 6 );
160  }
int FT_Error
Definition: fttypes.h:300
FT_BEGIN_HEADER typedef signed long FT_Pos
Definition: ftimage.h:58
FT_Bitmap_Embolden(FT_Library library, FT_Bitmap *bitmap, FT_Pos xStrength, FT_Pos yStrength)
Definition: ftbitmap.c:296
#define error(str)
Definition: mkdosfs.c:1605
signed int FT_Int
Definition: fttypes.h:220
FT_Library library
Definition: cffdrivr.c:654
#define FT_TRACE1(varformat)
Definition: ftdebug.h:158
FT_GlyphSlot_Own_Bitmap(FT_GlyphSlot slot)
Definition: ftbitmap.c:801
smooth FT_Module_Constructor FT_Module_Destructor FT_Module_Requester FT_GLYPH_FORMAT_OUTLINE
Definition: ftsmooth.c:416
#define FT_INT_MIN
Definition: ftstdlib.h:64
WORD face[3]
Definition: mesh.c:4747
FT_Outline_EmboldenXY(FT_Outline *outline, FT_Pos xstrength, FT_Pos ystrength)
Definition: ftoutln.c:909
FT_MulFix(FT_Long a, FT_Long b)
Definition: ftcalc.c:509
Definition: vfat.h:184
#define FT_INT_MAX
Definition: ftstdlib.h:63
GLenum GLuint GLint GLenum face
Definition: glext.h:7025

Referenced by IntExtTextOutW(), and TextIntGetTextExtentPoint().

◆ FT_GlyphSlot_Oblique()

FT_GlyphSlot_Oblique ( FT_GlyphSlot  slot)

Definition at line 48 of file ftsynth.c.

49  {
52 
53 
54  if ( !slot )
55  return;
56 
57  outline = &slot->outline;
58 
59  /* only oblique outline glyphs */
60  if ( slot->format != FT_GLYPH_FORMAT_OUTLINE )
61  return;
62 
63  /* we don't touch the advance width */
64 
65  /* For italic, simply apply a shear transform, with an angle */
66  /* of about 12 degrees. */
67 
68  transform.xx = 0x10000L;
69  transform.yx = 0x00000L;
70 
71  transform.xy = 0x0366AL;
72  transform.yy = 0x10000L;
73 
75  }
FT_Outline_Transform(const FT_Outline *outline, const FT_Matrix *matrix)
Definition: ftoutln.c:711
smooth FT_Module_Constructor FT_Module_Destructor FT_Module_Requester FT_GLYPH_FORMAT_OUTLINE
Definition: ftsmooth.c:416
static const WCHAR L[]
Definition: oid.c:1250
Definition: mesh.c:5329
Definition: vfat.h:184
GLuint GLenum GLenum transform
Definition: glext.h:9407

Referenced by IntExtTextOutW(), and TextIntGetTextExtentPoint().