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118 lines
3.3 KiB
C
118 lines
3.3 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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/**
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* # CategoryGesture
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*
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* Include file for SDL gesture event handling.
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*/
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#ifndef SDL_gesture_h_
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#define SDL_gesture_h_
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#include "SDL_stdinc.h"
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#include "SDL_error.h"
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#include "SDL_video.h"
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#include "SDL_touch.h"
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#include "begin_code.h"
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/* Set up for C function definitions, even when using C++ */
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef Sint64 SDL_GestureID;
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/* Function prototypes */
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/**
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* Begin recording a gesture on a specified touch device or all touch devices.
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*
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* If the parameter `touchId` is -1 (i.e., all devices), this function will
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* always return 1, regardless of whether there actually are any devices.
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*
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* \param touchId the touch device id, or -1 for all touch devices.
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* \returns 1 on success or 0 if the specified device could not be found.
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*
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* \since This function is available since SDL 2.0.0.
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*
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* \sa SDL_GetTouchDevice
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*/
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extern DECLSPEC int SDLCALL SDL_RecordGesture(SDL_TouchID touchId);
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/**
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* Save all currently loaded Dollar Gesture templates.
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*
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* \param dst a SDL_RWops to save to.
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* \returns the number of saved templates on success or 0 on failure; call
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* SDL_GetError() for more information.
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*
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* \since This function is available since SDL 2.0.0.
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*
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* \sa SDL_LoadDollarTemplates
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* \sa SDL_SaveDollarTemplate
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*/
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extern DECLSPEC int SDLCALL SDL_SaveAllDollarTemplates(SDL_RWops *dst);
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/**
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* Save a currently loaded Dollar Gesture template.
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*
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* \param gestureId a gesture id.
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* \param dst a SDL_RWops to save to.
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* \returns 1 on success or 0 on failure; call SDL_GetError() for more
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* information.
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*
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* \since This function is available since SDL 2.0.0.
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*
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* \sa SDL_LoadDollarTemplates
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* \sa SDL_SaveAllDollarTemplates
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*/
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extern DECLSPEC int SDLCALL SDL_SaveDollarTemplate(SDL_GestureID gestureId,SDL_RWops *dst);
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/**
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* Load Dollar Gesture templates from a file.
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*
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* \param touchId a touch id.
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* \param src a SDL_RWops to load from.
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* \returns the number of loaded templates on success or a negative error code
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* (or 0) on failure; call SDL_GetError() for more information.
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*
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* \since This function is available since SDL 2.0.0.
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*
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* \sa SDL_SaveAllDollarTemplates
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* \sa SDL_SaveDollarTemplate
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*/
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extern DECLSPEC int SDLCALL SDL_LoadDollarTemplates(SDL_TouchID touchId, SDL_RWops *src);
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/* Ends C function definitions when using C++ */
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#ifdef __cplusplus
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}
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#endif
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#include "close_code.h"
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#endif /* SDL_gesture_h_ */
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/* vi: set ts=4 sw=4 expandtab: */
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