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improved the Type1 drivers to deal with the case where

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the lenIV field is set to -1 to indicate unencoded charstrings

fixed some source code to prevent a compiler bug on IRIX

fixed the module version's in the "type1z" driver
This commit is contained in:
David Turner 2000-06-23 00:07:06 +00:00
parent 910c597d1a
commit d0079e669e
5 changed files with 57 additions and 177 deletions
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161
src/renderer/ftrender.c
View File

@ -1,161 +0,0 @@
#include <freetype/internal/ftobjs.h>
/* sets render-specific mode */
static FT_Error ft_renderer_set_mode( FT_Renderer render,
FT_ULong mode_tag,
FT_Pointer data )
{
/* we simply pass it to the raster */
return render->clazz->raster_class->raster_set_mode(
render->raster, mode_tag, data );
}
/* convert a slot's glyph image into a bitmap */
static FT_Error ft_renderer_render( FT_Renderer render,
FT_GlyphSlot slot,
FT_UInt mode )
{
FT_Error error;
FT_Outline* outline;
FT_BBox cbox;
FT_UInt width, height, pitch;
FT_Bitmap* bitmap;
FT_Memory memory;
FT_Raster_Params params;
/* first of all, transform the outline */
if (slot->format != ft_glyph_format_outline)
{
error = FT_Err_Invalid_Argument;
goto Exit;
}
outline = &slot->outline;
FT_Outline_Transform( outline, &slot->transform_matrix );
FT_Outline_Translate( outline, slot->transform_delta.x,
slot->transform_delta.y );
/* compute the control box, and grid fit it */
FT_Outline_Get_CBox( outline, &cbox );
cbox.xMin &= -64;
cbox.yMin &= -64;
cbox.xMax = (cbox.xMax+63) & -64;
cbox.yMax = (cbox.yMax+63) & -64;
width = (cbox.xMax - cbox.xMin) >> 6;
height = (cbox.yMax - cbox.yMin) >> 6;
bitmap = &slot->bitmap;
memory = slot->face->memory;
/* release old bitmap buffer */
if ((slot->flags & ft_glyph_own_bitmap))
FREE(bitmap->buffer);
/* allocate new one, depends on pixel format */
if ( mode & ft_render_mode_antialias )
{
pitch = width;
bitmap->pixel_mode = ft_pixel_mode_grays;
bitmap->num_grays = 256;
}
else
{
pitch = (width+7) >> 3;
bitmap->pixel_mode = ft_pixel_mode_mono;
}
bitmap->width = width;
bitmap->rows = height;
bitmap->pitch = pitch;
if (ALLOC( bitmap->buffer, (FT_ULong)pitch * height ))
goto Exit;
/* translate outline to render it into the bitmap */
FT_Outline_Translate( outline, -cbox.xMin, -cbox.yMin );
/* set up parameters */
params.target = bitmap;
params.source = outline;
params.flags = 0;
if ( bitmap->pixel_mode == ft_pixel_mode_grays )
params.flags |= ft_raster_flag_aa;
/* render outline into the bitmap */
error = render->render( render->raster, &params );
if (error) goto Exit;
slot->format = ft_glyph_format_bitmap;
slot->bitmap_left = cbox.xMin >> 6;
slot->bitmap_top = cbox.yMax >> 6;
Exit:
return error;
}
#ifndef FT_CONFIG_OPTION_NO_STD_RASTER
#include <freetype/ftraster.h>
const FT_Renderer_Class ft_standard_renderer_class =
{
{
ft_module_renderer,
sizeof( FT_RendererRec ),
"standard renderer",
0x10000,
0x20000,
0, /* module specific interface */
(FT_Module_Constructor) 0,
(FT_Module_Destructor) 0,
(FT_Module_Requester) 0
},
ft_glyph_format_outline,
(FTRenderer_render) ft_renderer_render,
(FTRenderer_setMode) ft_renderer_set_mode,
(FT_Raster_Funcs*) &ft_standard_raster
};
#endif /* !FT_CONFIG_OPTION_NO_STD_RASTER */
#ifndef FT_CONFIG_OPTION_NO_SMOOTH_RASTER
#include <freetype/ftgrays.h>
const FT_Renderer_Class ft_smooth_renderer_class =
{
{
ft_module_renderer,
sizeof( FT_RendererRec ),
"smooth renderer",
0x10000,
0x20000,
0, /* module specific interface */
(FT_Module_Constructor) 0,
(FT_Module_Destructor) 0,
(FT_Module_Requester) 0
},
ft_glyph_format_outline,
(FTRenderer_render) ft_renderer_render,
(FTRenderer_setMode) ft_renderer_set_mode,
(FT_Raster_Funcs*) &ft_grays_raster
};
#endif /* !FT_CONFIG_OPTION_NO_SMOOTH_RASTER */

9
src/type1/t1gload.c
View File

@ -830,7 +830,14 @@
case op_div:
if (top[1])
*top++ = top[0] / top[1];
{
/* this code was originally "*top++ = top[1]/top[0]" */
/* however, it didn't run correctly on IRIX 6.5 using */
/* the MISPRO 7.2 compiler suite. The following code */
/* should run flawlessly.. */
*top = top[0] / top[1];
++top;
}
else
{
FT_ERROR(( "T1.Parse_CHarStrings : division by 0\n" ));

30
src/type1/t1load.c
View File

@ -719,11 +719,20 @@
{
FT_Byte* base = tokzer->base + tokzer->cursor;
t1_decrypt( base, count, 4330 );
tokzer->cursor += count;
base += face->type1.private_dict.lenIV;
count -= face->type1.private_dict.lenIV;
/* some fonts use a value of -1 for lenIV to indicate that */
/* the charstrings are unencoded.. */
/* */
/* thanks to Tom Kacvinsky for pointing this out.. */
/* */
if (face->type1.private_dict.lenIV >= 0)
{
t1_decrypt( base, count, 4330 );
base += face->type1.private_dict.lenIV;
count -= face->type1.private_dict.lenIV;
}
error = T1_Add_Table( &parser->table, index, base, count );
}
@ -803,11 +812,20 @@
{
FT_Byte* base = tokzer->base + tokzer->cursor;
t1_decrypt( base, count, 4330 );
tokzer->cursor += count; /* skip */
/* some fonts use a value of -1 for lenIV to indicate that */
/* the charstrings are unencoded.. */
/* */
/* thanks to Tom Kacvinsky for pointing this out.. */
/* */
if (face->type1.private_dict.lenIV >= 0)
{
t1_decrypt( base, count, 4330 );
base += face->type1.private_dict.lenIV;
count -= face->type1.private_dict.lenIV;
base += face->type1.private_dict.lenIV;
count -= face->type1.private_dict.lenIV;
}
error = T1_Add_Table( &parser->table, index*2+1, base, count );
}

6
src/type1z/t1driver.c
View File

@ -229,9 +229,9 @@
ft_module_font_driver | ft_module_driver_scalable,
sizeof( FT_DriverRec ),
"type1",
100,
200,
"type1z",
0x10000,
0x20000,
0, /* format interface */

28
src/type1z/t1load.c
View File

@ -1078,9 +1078,17 @@
index = T1_ToInt(parser);
if (!read_binary_data(parser,&size,&base)) return;
T1_Decrypt( base, size, 4330 );
size -= face->type1.private_dict.lenIV;
base += face->type1.private_dict.lenIV;
/* some fonts use a value of -1 for lenIV to indicate that */
/* the charstrings are unencoded.. */
/* */
/* thanks to Tom Kacvinsky for pointing this out.. */
/* */
if (face->type1.private_dict.lenIV >= 0)
{
T1_Decrypt( base, size, 4330 );
size -= face->type1.private_dict.lenIV;
base += face->type1.private_dict.lenIV;
}
error = T1_Add_Table( table, index, base, size );
if (error) goto Fail;
@ -1162,9 +1170,17 @@
parser->cursor = cur2;
if (!read_binary_data(parser,&size,&base)) return;
T1_Decrypt( base, size, 4330 );
size -= face->type1.private_dict.lenIV;
base += face->type1.private_dict.lenIV;
/* some fonts use a value of -1 for lenIV to indicate that */
/* the charstrings are unencoded.. */
/* */
/* thanks to Tom Kacvinsky for pointing this out.. */
/* */
if (face->type1.private_dict.lenIV >= 0)
{
T1_Decrypt( base, size, 4330 );
size -= face->type1.private_dict.lenIV;
base += face->type1.private_dict.lenIV;
}
error = T1_Add_Table( code_table, n, base, size );
if (error) goto Fail;