Engines: Pango Reference Manual

## Engines Engines — Language-specific and rendering-system-specific processing |

## Functions

void | script_engine_list ()
void | script_engine_init ()
void | script_engine_exit ()
PangoEngine * | script_engine_create ()

## Types and Values

struct | PangoEngineInfo
struct | PangoEngineScriptInfo
struct | PangoEngine
struct | PangoEngineClass

## Object Hierarchy

        GObject
        ╰── PangoEngine
            ├── PangoEngineLang
            ╰── PangoEngineShape

## Description

Pango used to have a module architecture in which the language-specific and render-system-specific components are provided by loadable modules.

This is no longer the case, and all the APIs related to modules and engines should not be used anymore.

## Functions

### script_engine_list ()

    void
    script_engine_list (PangoEngineInfo **engines,
                        int *n_engines);

`script_engine_list` has been deprecated since version 1.38 and should not be used in newly-written code.

Do not use.

[skip]

#### Parameters

engines | location to store a pointer to an array of engines. |
n_engines | location to store the number of elements in `engines` . |

### script_engine_init ()

    void
    script_engine_init (GTypeModule *module);

`script_engine_init` has been deprecated since version 1.38 and should not be used in newly-written code.

Do not use.

[skip]

#### Parameters

module | a GTypeModule structure used to associate any GObject types created in this module with the module. |

### script_engine_exit ()

    void
    script_engine_exit (void);

`script_engine_exit` has been deprecated since version 1.38 and should not be used in newly-written code.

Do not use.

[skip]

### script_engine_create ()

    PangoEngine *
    script_engine_create (const char *id);

`script_engine_create` has been deprecated since version 1.38 and should not be used in newly-written code.

Do not use.

[skip]

#### Parameters

id | the ID of an engine as reported by script_engine_list. |

## Types and Values

### struct PangoEngineInfo

    struct PangoEngineInfo {
      const gchar *id;
      const gchar *engine_type;
      const gchar *render_type;
      PangoEngineScriptInfo *scripts;
      gint n_scripts;
    };

`PangoEngineInfo` has been deprecated since version 1.38 and should not be used in newly-written code.

The PangoEngineInfo structure contains information about a particular engine. It contains the following fields:

#### Members

const gchar *`id`; | a unique string ID for the engine. |
const gchar *`engine_type`; | a string identifying the engine type. |
const gchar *`render_type`; | a string identifying the render type. |
PangoEngineScriptInfo *`scripts`; | array of scripts this engine supports. |
gint `n_scripts`; | number of items in `scripts` . |

### struct PangoEngineScriptInfo

    struct PangoEngineScriptInfo {
      PangoScript script;
      const gchar *langs;
    };

`PangoEngineScriptInfo` has been deprecated since version 1.38 and should not be used in newly-written code.

The PangoEngineScriptInfo structure contains information about how the shaper covers a particular script.

#### Members

PangoScript `script`; | a PangoScript. The value `PANGO_SCRIPT_COMMON` has the special meaning here of "all scripts" |
const gchar *`langs`; | a semicolon separated list of languages that this engine handles for this script. This may be empty, in which case the engine is saying that it is a fallback choice for all languages for this range, but should not be used if another engine indicates that it is specific for the language for a given code point. An entry in this list of "*" indicates that this engine is specific to all languages for this range. |

### struct PangoEngine

    struct PangoEngine;

`PangoEngine` has been deprecated since version 1.38 and should not be used in newly-written code.

PangoEngine is the base class for all types of language and script specific engines. It has no functionality by itself.

### struct PangoEngineClass

    struct PangoEngineClass {
    };

`PangoEngineClass` has been deprecated since version 1.38 and should not be used in newly-written code.

Class structure for PangoEngine