159 lines
6 KiB
C
159 lines
6 KiB
C
/******************************************************************************
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Copyright (C) 2013-2014 by Hugh Bailey <obs.jim@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program 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. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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#pragma once
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#include "util/c99defs.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @file
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*
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* Modules can specify custom user-interface-specific exports. UI functions
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* can be within the same library as the actual core logic, or separated in to
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* different modules to split up UI logic and core module logic.
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*
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* The reasoning for this is to allow for custom user interface of differing
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* toolkits or for automatically generated user interface, or to simply allow
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* separation of UI code from core code (which may often be in differing
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* languages).
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*/
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/** Modal UI definition structure */
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struct obs_modal_ui {
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const char *id; /**< Identifier associated with this UI */
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const char *task; /**< Task of the UI */
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const char *target; /**< UI target (UI toolkit or program name) */
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/**
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* Callback to execute modal interface.
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*
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* The @b object variable points to the input/output/encoder/etc. The
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* @b ui_data variable points to the UI parent or UI-specific data to
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* be used with the custom user interface.
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*
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* What @b ui_data points to differs depending on the target, and you
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* should use discretion and consistency when using this variable to
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* relay information to the UI function. For example, it would be
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* ideal to have @b ui_data point to a parent, QWidget for Qt, or a
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* wxWindow for wxWidgets, etc., though it's up to the discretion of
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* the developer to define that value. Because of the nature of void
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* pointers, discretion and consistency is advised.
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*
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* @param object Pointer/handle to the data associated with this
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* call.
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* @param ui_data UI data to pass associated with this specific
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* target, if any.
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* @return @b true if user completed the task, or
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* @b false if user cancelled the task.
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*/
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bool (*exec)(void *object, void *ui_data);
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void *type_data;
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void (*free_type_data)(void *type_data);
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};
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/**
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* Registers a modal UI definition to the current obs context. This should be
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* used in obs_module_load.
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*
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* @param info Pointer to the modal definition structure
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*/
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EXPORT void obs_register_modal_ui(const struct obs_modal_ui *info);
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/* ------------------------------------------------------------------------- */
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/** Modeless UI definition structure */
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struct obs_modeless_ui {
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const char *id; /**< Identifier associated with this UI */
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const char *task; /**< Task of the UI */
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const char *target; /**< UI target (UI toolkit or program name) */
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/**
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* Callback to create modeless interface.
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*
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* This function is almost identical to the modal exec function,
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* except modeless UI calls return immediately, and typically are
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* supposed to return a pointer or handle to the specific UI object
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* that was created. For example, a Qt object would ideally return a
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* pointer to a QWidget. Again, discretion and consistency is advised
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* for the return value.
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*
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* @param object Pointer/handle to the data associated with this
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* call.
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* @param ui_data UI data to pass associated with this specific
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* target, if any.
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* @return Pointer/handle to the modeless UI associated with
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* the specific target.
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*/
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void *(*create)(void *object, void *ui_data);
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void *type_data;
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void (*free_type_data)(void *type_data);
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};
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/**
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* Registers a modeless UI definition to the current obs context. This should
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* be used in obs_module_load.
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*
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* @param info Pointer to the modal definition structure
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*/
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EXPORT void obs_register_modeless_ui(const struct obs_modeless_ui *info);
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/* ------------------------------------------------------------------------- */
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#define OBS_UI_SUCCESS 0
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#define OBS_UI_CANCEL -1
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#define OBS_UI_NOTFOUND -2
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/**
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* Requests modal UI to be displayed. Returns when user is complete.
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*
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* @param name Name of the input/output/etc type that UI was requested for
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* @param task Task of the user interface (usually "config")
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* @param target Desired target (i.e. "qt", "wx", "gtk3", "win32", etc)
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* @param data Pointer to the obs input/output/etc
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* @param ui_data UI-specific data, usually a parent pointer/handle (if any)
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*
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* @return OBS_UI_SUCCESS if the UI was successful,
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* OBS_UI_CANCEL if the UI was cancelled by the user, or
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* OBS_UI_NOTFOUND if the UI callback was not found
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*/
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EXPORT int obs_exec_ui(const char *id, const char *task, const char *target,
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void *data, void *ui_data);
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/**
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* Requests modeless UI to be created. Returns immediately.
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*
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* @param name Name of the input/output/etc type that UI was requested for
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* @param task Task of the user interface
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* @param target Desired target (i.e. "qt", "wx", "gtk3", "win32", etc)
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* @param data Pointer to the obs input/output/etc
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* @param ui_data UI-specific data, usually a parent pointer/handle (if any)
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*
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* @return Pointer/handle to the target-specific modeless object, or
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* NULL if not found or failed.
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*/
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EXPORT void *obs_create_ui(const char *id, const char *task, const char *target,
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void *data, void *ui_data);
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#ifdef __cplusplus
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}
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#endif
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