David Robillard
c37722f7dc
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
102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/* -*- Mode: C ; c-basic-offset: 2 -*- */
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/*****************************************************************************
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*
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* This work is in public domain.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* If you have questions, contact Nedko Arnaudov <nedko@arnaudov.name> or
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* ask in #lad channel, FreeNode IRC network.
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*
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*****************************************************************************/
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#ifndef LV2_EXTERNAL_UI_H__5AFE09A5_0FB7_47AF_924E_2AF0F8DE8873__INCLUDED
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#define LV2_EXTERNAL_UI_H__5AFE09A5_0FB7_47AF_924E_2AF0F8DE8873__INCLUDED
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/** UI extension suitable for out-of-process UIs */
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#define LV2_EXTERNAL_UI_URI "http://lv2plug.in/ns/extensions/ui#external"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if 0
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} /* Adjust editor indent */
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#endif
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/**
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* When LV2_EXTERNAL_UI_URI UI is instantiated, the returned
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* LV2UI_Widget handle must be cast to pointer to struct lv2_external_ui.
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* UI is created in invisible state.
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*/
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struct lv2_external_ui
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{
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/**
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* Host calls this function regulary. UI library implementing the
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* callback may do IPC or redraw the UI.
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*
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* @param _this_ the UI context
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*/
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void (* run)(struct lv2_external_ui * _this_);
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/**
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* Host calls this function to make the plugin UI visible.
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*
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* @param _this_ the UI context
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*/
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void (* show)(struct lv2_external_ui * _this_);
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/**
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* Host calls this function to make the plugin UI invisible again.
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*
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* @param _this_ the UI context
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*/
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void (* hide)(struct lv2_external_ui * _this_);
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};
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#define LV2_EXTERNAL_UI_RUN(ptr) (ptr)->run(ptr)
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#define LV2_EXTERNAL_UI_SHOW(ptr) (ptr)->show(ptr)
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#define LV2_EXTERNAL_UI_HIDE(ptr) (ptr)->hide(ptr)
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/**
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* On UI instantiation, host must supply LV2_EXTERNAL_UI_URI
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* feature. LV2_Feature::data must be pointer to struct lv2_external_ui_host. */
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struct lv2_external_ui_host
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{
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/**
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* Callback that plugin UI will call
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* when UI (GUI window) is closed by user.
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* This callback wil; be called during execution of lv2_external_ui::run()
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* (i.e. not from background thread).
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*
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* After this callback is called, UI is defunct. Host must call
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* LV2UI_Descriptor::cleanup(). If host wants to make the UI visible
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* again UI must be reinstantiated.
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*
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* @param controller Host context associated with plugin UI, as
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* supplied to LV2UI_Descriptor::instantiate()
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*/
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void (* ui_closed)(void* controller);
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/**
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* Optional (may be NULL) "user friendly" identifier which the UI
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* may display to allow a user to easily associate this particular
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* UI instance with the correct plugin instance as it is represented
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* by the host (e.g. "track 1" or "channel 4").
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*
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* If supplied by host, the string will be referenced only during
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* LV2UI_Descriptor::instantiate()
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*/
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const char * plugin_human_id;
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};
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#if 0
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{ /* Adjust editor indent */
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#endif
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* #ifndef LV2_EXTERNAL_UI_H__5AFE09A5_0FB7_47AF_924E_2AF0F8DE8873__INCLUDED */
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