FreeType-2.8 API Reference

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Module Management

Synopsis

The definitions below are used to manage modules within FreeType. Modules can be added, upgraded, and removed at runtime. Additionally, some module properties can be controlled also.

Here is a list of possible values of the ‘module_name’ field in the FT_Module_Class structure.

typedef struct FT_Module_Class_ { FT_ULong module_flags; FT_Long module_size; const FT_String* module_name; FT_Fixed module_version; FT_Fixed module_requires; const void* module_interface; FT_Module_Constructor module_init; FT_Module_Destructor module_done; FT_Module_Requester get_interface; } FT_Module_Class;

FT_EXPORT( FT_Error ) FT_Property_Set( FT_Library library, const FT_String* module_name, const FT_String* property_name, const void* value );

FT_EXPORT( FT_Error ) FT_Property_Get( FT_Library library, const FT_String* module_name, const FT_String* property_name, void* value );

typedef struct FT_Renderer_Class_ { FT_Module_Class root; FT_Glyph_Format glyph_format; FT_Renderer_RenderFunc render_glyph; FT_Renderer_TransformFunc transform_glyph; FT_Renderer_GetCBoxFunc get_glyph_cbox; FT_Renderer_SetModeFunc set_mode; FT_Raster_Funcs* raster_class; } FT_Renderer_Class;

FT_EXPORT( FT_Error ) FT_Set_Renderer( FT_Library library, FT_Renderer renderer, FT_UInt num_params, FT_Parameter* parameters );

FT_Module
FT_Module_Constructor	FT_New_Library
FT_Module_Destructor	FT_Done_Library
FT_Module_Requester	FT_Reference_Library
FT_Module_Class
	FT_Renderer
FT_Add_Module	FT_Renderer_Class
FT_Get_Module
FT_Remove_Module	FT_Get_Renderer
FT_Add_Default_Modules	FT_Set_Renderer

FT_Property_Set	FT_Set_Debug_Hook
FT_Property_Get
FT_Set_Default_Properties	FT_Driver

hook_index	The index of the debug hook. You should use the values defined in ‘ftobjs.h’, e.g., ‘FT_DEBUG_HOOK_TRUETYPE’.
debug_hook	The function used to debug the interpreter.

module	The module to be searched.
name	The name of the interface in the module.

module_flags	Bit flags describing the module.
module_size	The size of one module object/instance in bytes.
module_name	The name of the module.
module_version	The version, as a 16.16 fixed number (major.minor).
module_requires	The version of FreeType this module requires, as a 16.16 fixed number (major.minor). Starts at version 2.0, i.e., 0x20000.
module_init	The initializing function.
module_done	The finalizing function.
get_interface	The interface requesting function.

library	A handle to the library object.
module_name	The module's name (as an ASCII string).

library	A handle to the library the module is part of.
module_name	The module name.
property_name	The property name. Properties are described in the ‘Synopsis’ subsection of the module's documentation. Note that only a few modules have properties.
value	A generic pointer to a variable or structure that gives the new value of the property. The exact definition of ‘value’ is dependent on the property; see the ‘Synopsis’ subsection of the module's documentation.

root	The root FT_Module_Class fields.
glyph_format	The glyph image format this renderer handles.
render_glyph	A method used to render the image that is in a given glyph slot into a bitmap.
transform_glyph	A method used to transform the image that is in a given glyph slot.
get_glyph_cbox	A method used to access the glyph's cbox.
set_mode	A method used to pass additional parameters.
raster_class	For FT_GLYPH_FORMAT_OUTLINE renderers only. This is a pointer to its raster's class.

library	A handle to the library object.
format	The glyph format.

renderer	A handle to the renderer object.
num_params	The number of additional parameters.
parameters	Additional parameters.

FreeType-2.8 API Reference

Module Management

Synopsis

FT_Module

FT_Module_Constructor

input

FT_Module_Destructor

input

FT_Module_Requester

input

FT_Module_Class

fields

FT_Add_Module

inout

input

return

note

FT_Get_Module

input

return

note

FT_Remove_Module

inout

input

return

note

FT_Add_Default_Modules

inout

FT_Property_Set

input

return

note

since

FT_Property_Get

input

inout

return

note

since

FT_Set_Default_Properties

module-name1

property-name1

module-name2

property-name2

inout

FT_New_Library

input

output

return

note

FT_Done_Library

input

return

note

FT_Reference_Library

input

return

since

FT_Renderer

FT_Renderer_Class

fields

FT_Get_Renderer

input

return

note

FT_Set_Renderer

inout

input

return

note

FT_Set_Debug_Hook

inout

input

note

FT_Driver