ardour/gtk2_ardour/lv2_external_ui.h
David Robillard c37722f7dc Use new Suil and SLV2 APIs for LV2 plugin UIs.
Add lv2_ui.h (required by lv2_external_ui.h).


git-svn-id: svn://localhost/ardour2/branches/3.0@9406 d708f5d6-7413-0410-9779-e7cbd77b26cf
2011-04-22 08:08:37 +00:00

102 lines
3.1 KiB
C

/* -*- Mode: C ; c-basic-offset: 2 -*- */
/*****************************************************************************
*
* This work is in public domain.
*
* This file is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* If you have questions, contact Nedko Arnaudov <nedko@arnaudov.name> or
* ask in #lad channel, FreeNode IRC network.
*
*****************************************************************************/
#ifndef LV2_EXTERNAL_UI_H__5AFE09A5_0FB7_47AF_924E_2AF0F8DE8873__INCLUDED
#define LV2_EXTERNAL_UI_H__5AFE09A5_0FB7_47AF_924E_2AF0F8DE8873__INCLUDED
/** UI extension suitable for out-of-process UIs */
#define LV2_EXTERNAL_UI_URI "http://lv2plug.in/ns/extensions/ui#external"
#ifdef __cplusplus
extern "C" {
#endif
#if 0
} /* Adjust editor indent */
#endif
/**
* When LV2_EXTERNAL_UI_URI UI is instantiated, the returned
* LV2UI_Widget handle must be cast to pointer to struct lv2_external_ui.
* UI is created in invisible state.
*/
struct lv2_external_ui
{
/**
* Host calls this function regulary. UI library implementing the
* callback may do IPC or redraw the UI.
*
* @param _this_ the UI context
*/
void (* run)(struct lv2_external_ui * _this_);
/**
* Host calls this function to make the plugin UI visible.
*
* @param _this_ the UI context
*/
void (* show)(struct lv2_external_ui * _this_);
/**
* Host calls this function to make the plugin UI invisible again.
*
* @param _this_ the UI context
*/
void (* hide)(struct lv2_external_ui * _this_);
};
#define LV2_EXTERNAL_UI_RUN(ptr) (ptr)->run(ptr)
#define LV2_EXTERNAL_UI_SHOW(ptr) (ptr)->show(ptr)
#define LV2_EXTERNAL_UI_HIDE(ptr) (ptr)->hide(ptr)
/**
* On UI instantiation, host must supply LV2_EXTERNAL_UI_URI
* feature. LV2_Feature::data must be pointer to struct lv2_external_ui_host. */
struct lv2_external_ui_host
{
/**
* Callback that plugin UI will call
* when UI (GUI window) is closed by user.
* This callback wil; be called during execution of lv2_external_ui::run()
* (i.e. not from background thread).
*
* After this callback is called, UI is defunct. Host must call
* LV2UI_Descriptor::cleanup(). If host wants to make the UI visible
* again UI must be reinstantiated.
*
* @param controller Host context associated with plugin UI, as
* supplied to LV2UI_Descriptor::instantiate()
*/
void (* ui_closed)(void* controller);
/**
* Optional (may be NULL) "user friendly" identifier which the UI
* may display to allow a user to easily associate this particular
* UI instance with the correct plugin instance as it is represented
* by the host (e.g. "track 1" or "channel 4").
*
* If supplied by host, the string will be referenced only during
* LV2UI_Descriptor::instantiate()
*/
const char * plugin_human_id;
};
#if 0
{ /* Adjust editor indent */
#endif
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* #ifndef LV2_EXTERNAL_UI_H__5AFE09A5_0FB7_47AF_924E_2AF0F8DE8873__INCLUDED */