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ftrend1.c
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1 /***************************************************************************/
2 /* */
3 /* ftrend1.c */
4 /* */
5 /* The FreeType glyph rasterizer interface (body). */
6 /* */
7 /* Copyright 1996-2018 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_INTERNAL_DEBUG_H
21 #include FT_INTERNAL_OBJECTS_H
22 #include FT_OUTLINE_H
23 #include "ftrend1.h"
24 #include "ftraster.h"
25 #include "rastpic.h"
26 
27 #include "rasterrs.h"
28 
29 
30  /* initialize renderer -- init its raster */
31  static FT_Error
33  {
34  render->clazz->raster_class->raster_reset( render->raster, NULL, 0 );
35 
36  return FT_Err_Ok;
37  }
38 
39 
40  /* set render-specific mode */
41  static FT_Error
43  FT_ULong mode_tag,
45  {
46  /* we simply pass it to the raster */
47  return render->clazz->raster_class->raster_set_mode( render->raster,
48  mode_tag,
49  data );
50  }
51 
52 
53  /* transform a given glyph image */
54  static FT_Error
57  const FT_Matrix* matrix,
58  const FT_Vector* delta )
59  {
61 
62 
63  if ( slot->format != render->glyph_format )
64  {
65  error = FT_THROW( Invalid_Argument );
66  goto Exit;
67  }
68 
69  if ( matrix )
70  FT_Outline_Transform( &slot->outline, matrix );
71 
72  if ( delta )
73  FT_Outline_Translate( &slot->outline, delta->x, delta->y );
74 
75  Exit:
76  return error;
77  }
78 
79 
80  /* return the glyph's control box */
81  static void
84  FT_BBox* cbox )
85  {
86  FT_ZERO( cbox );
87 
88  if ( slot->format == render->glyph_format )
89  FT_Outline_Get_CBox( &slot->outline, cbox );
90  }
91 
92 
93  /* convert a slot's glyph image into a bitmap */
94  static FT_Error
98  const FT_Vector* origin )
99  {
101  FT_Outline* outline = &slot->outline;
102  FT_Bitmap* bitmap = &slot->bitmap;
103  FT_Memory memory = render->root.memory;
104  FT_Pos x_shift = 0;
105  FT_Pos y_shift = 0;
106 
108 
109 
110  /* check glyph image format */
111  if ( slot->format != render->glyph_format )
112  {
113  error = FT_THROW( Invalid_Argument );
114  goto Exit;
115  }
116 
117  /* check rendering mode */
118  if ( mode != FT_RENDER_MODE_MONO )
119  {
120  /* raster1 is only capable of producing monochrome bitmaps */
121  return FT_THROW( Cannot_Render_Glyph );
122  }
123 
124  /* release old bitmap buffer */
125  if ( slot->internal->flags & FT_GLYPH_OWN_BITMAP )
126  {
127  FT_FREE( bitmap->buffer );
128  slot->internal->flags &= ~FT_GLYPH_OWN_BITMAP;
129  }
130 
132 
133  /* allocate new one */
134  if ( FT_ALLOC_MULT( bitmap->buffer, bitmap->rows, bitmap->pitch ) )
135  goto Exit;
136 
137  slot->internal->flags |= FT_GLYPH_OWN_BITMAP;
138 
139  x_shift = -slot->bitmap_left * 64;
140  y_shift = ( (FT_Int)bitmap->rows - slot->bitmap_top ) * 64;
141 
142  if ( origin )
143  {
144  x_shift += origin->x;
145  y_shift += origin->y;
146  }
147 
148  /* translate outline to render it into the bitmap */
149  if ( x_shift || y_shift )
150  FT_Outline_Translate( outline, x_shift, y_shift );
151 
152  /* set up parameters */
153  params.target = bitmap;
154  params.source = outline;
156 
157  /* render outline into the bitmap */
158  error = render->raster_render( render->raster, &params );
159 
160  Exit:
161  if ( !error )
162  /* everything is fine; the glyph is now officially a bitmap */
163  slot->format = FT_GLYPH_FORMAT_BITMAP;
164  else if ( slot->internal->flags & FT_GLYPH_OWN_BITMAP )
165  {
166  FT_FREE( bitmap->buffer );
167  slot->internal->flags &= ~FT_GLYPH_OWN_BITMAP;
168  }
169 
170  if ( x_shift || y_shift )
171  FT_Outline_Translate( outline, -x_shift, -y_shift );
172 
173  return error;
174  }
175 
176 
178  ft_raster1_renderer_class,
179 
181  sizeof ( FT_RendererRec ),
182 
183  "raster1",
184  0x10000L,
185  0x20000L,
186 
187  NULL, /* module specific interface */
188 
189  (FT_Module_Constructor)ft_raster1_init, /* module_init */
190  (FT_Module_Destructor) NULL, /* module_done */
191  (FT_Module_Requester) NULL, /* get_interface */
192 
194 
195  (FT_Renderer_RenderFunc) ft_raster1_render, /* render_glyph */
196  (FT_Renderer_TransformFunc)ft_raster1_transform, /* transform_glyph */
197  (FT_Renderer_GetCBoxFunc) ft_raster1_get_cbox, /* get_glyph_cbox */
199 
200  (FT_Raster_Funcs*)&FT_STANDARD_RASTER_GET /* raster_class */
201  )
202 
203 
204 /* END */
int FT_Error
Definition: fttypes.h:300
FT_Pos y
Definition: ftimage.h:77
FT_Error(* FT_Module_Constructor)(FT_Module module)
Definition: ftmodapi.h:152
unsigned long FT_ULong
Definition: fttypes.h:253
FT_BEGIN_HEADER typedef signed long FT_Pos
Definition: ftimage.h:58
#define error(str)
Definition: mkdosfs.c:1605
#define FT_STANDARD_RASTER_GET
Definition: rastpic.h:30
FT_Pos x
Definition: ftimage.h:76
signed int FT_Int
Definition: fttypes.h:220
GLuint GLenum matrix
Definition: glext.h:9407
enum FT_Render_Mode_ FT_Render_Mode
static FT_Error ft_raster1_set_mode(FT_Renderer render, FT_ULong mode_tag, FT_Pointer data)
Definition: ftrend1.c:42
voidpf uLong int origin
Definition: ioapi.h:142
static FT_Error ft_raster1_init(FT_Renderer render)
Definition: ftrend1.c:32
return FT_Err_Ok
Definition: ftbbox.c:511
static char memory[1024 *256]
Definition: process.c:116
#define FT_GLYPH_OWN_BITMAP
Definition: ftobjs.h:463
void(* FT_Renderer_GetCBoxFunc)(FT_Renderer renderer, FT_GlyphSlot slot, FT_BBox *cbox)
Definition: ftrender.h:102
GLenum const GLfloat * params
Definition: glext.h:5645
#define FT_THROW(e)
Definition: ftdebug.h:213
FT_Module_Interface(* FT_Module_Requester)(FT_Module module, const char *name)
Definition: ftmodapi.h:184
FT_Outline_Get_CBox(const FT_Outline *outline, FT_BBox *acbox)
Definition: ftoutln.c:478
smooth NULL
Definition: ftsmooth.c:416
#define FT_FREE(ptr)
Definition: ftmemory.h:329
FT_Outline_Transform(const FT_Outline *outline, const FT_Matrix *matrix)
Definition: ftoutln.c:711
static FT_Error ft_raster1_transform(FT_Renderer render, FT_GlyphSlot slot, const FT_Matrix *matrix, const FT_Vector *delta)
Definition: ftrend1.c:55
Definition: uimain.c:88
#define FT_ZERO(p)
Definition: ftmemory.h:237
smooth FT_Module_Constructor FT_Module_Destructor FT_Module_Requester FT_GLYPH_FORMAT_OUTLINE
Definition: ftsmooth.c:416
static void Exit(void)
Definition: sock.c:1331
static void render(void)
Definition: ssstars.c:272
FT_DEFINE_RENDERER(ft_smooth_renderer_class, FT_MODULE_RENDERER, sizeof(FT_RendererRec), "smooth", 0x10000L, 0x20000L, NULL,(FT_Module_Constructor) ft_smooth_init,(FT_Module_Destructor) NULL,(FT_Module_Requester) NULL, FT_GLYPH_FORMAT_OUTLINE,(FT_Renderer_RenderFunc) ft_smooth_render,(FT_Renderer_TransformFunc) ft_smooth_transform,(FT_Renderer_GetCBoxFunc) ft_smooth_get_cbox,(FT_Renderer_SetModeFunc) ft_smooth_set_mode,(FT_Raster_Funcs *)&FT_GRAYS_RASTER_GET) FT_DEFINE_RENDERER(ft_smooth_lcd_renderer_class
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: gl.h:1950
static void ft_raster1_get_cbox(FT_Renderer render, FT_GlyphSlot slot, FT_BBox *cbox)
Definition: ftrend1.c:82
typedefFT_BEGIN_HEADER struct FT_MemoryRec_ * FT_Memory
Definition: ftsystem.h:66
GLenum mode
Definition: glext.h:6217
Definition: mesh.c:5329
Definition: vfat.h:184
FT_Error(* FT_Renderer_SetModeFunc)(FT_Renderer renderer, FT_ULong mode_tag, FT_Pointer mode_ptr)
Definition: ftrender.h:108
ft_glyphslot_preset_bitmap(FT_GlyphSlot slot, FT_Render_Mode mode, const FT_Vector *origin)
Definition: ftobjs.c:334
void(* FT_Module_Destructor)(FT_Module module)
Definition: ftmodapi.h:167
#define FT_ALLOC_MULT(ptr, count, item_size)
Definition: ftmemory.h:309
FT_Error(* FT_Renderer_TransformFunc)(FT_Renderer renderer, FT_GlyphSlot slot, const FT_Matrix *matrix, const FT_Vector *delta)
Definition: ftrender.h:95
FT_MODULE_RENDERER
Definition: ftsmooth.c:413
FT_Outline_Translate(const FT_Outline *outline, FT_Pos xOffset, FT_Pos yOffset)
Definition: ftoutln.c:528
#define FT_RASTER_FLAG_DEFAULT
Definition: ftimage.h:940
static HBITMAP bitmap
Definition: clipboard.c:1344
static FT_Error ft_raster1_render(FT_Renderer render, FT_GlyphSlot slot, FT_Render_Mode mode, const FT_Vector *origin)
Definition: ftrend1.c:95
FT_Error(* FT_Renderer_RenderFunc)(FT_Renderer renderer, FT_GlyphSlot slot, FT_Render_Mode mode, const FT_Vector *origin)
Definition: ftrender.h:89