SDL
2.0
SDL_touch.h
Go to the documentation of this file.
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2018 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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* \file SDL_touch.h
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*
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* Include file for SDL touch event handling.
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*/
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#ifndef SDL_touch_h_
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#define SDL_touch_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 "
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_TouchID
;
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typedef
Sint64
SDL_FingerID
;
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typedef
struct
SDL_Finger
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{
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SDL_FingerID
id
;
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float
x
;
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float
y
;
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float
pressure
;
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}
SDL_Finger
;
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/* Used as the device ID for mouse events simulated with touch input */
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#define SDL_TOUCH_MOUSEID ((Uint32)-1)
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/* Function prototypes */
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/**
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* \brief Get the number of registered touch devices.
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*/
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extern
DECLSPEC
int
SDLCALL
SDL_GetNumTouchDevices
(
void
);
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/**
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* \brief Get the touch ID with the given index, or 0 if the index is invalid.
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*/
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extern
DECLSPEC
SDL_TouchID
SDLCALL
SDL_GetTouchDevice
(
int
index
);
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/**
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* \brief Get the number of active fingers for a given touch device.
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*/
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extern
DECLSPEC
int
SDLCALL
SDL_GetNumTouchFingers
(
SDL_TouchID
touchID);
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/**
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* \brief Get the finger object of the given touch, with the given index.
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*/
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extern
DECLSPEC
SDL_Finger
*
SDLCALL
SDL_GetTouchFinger
(
SDL_TouchID
touchID,
int
index
);
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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_touch_h_ */
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/* vi: set ts=4 sw=4 expandtab: */
DECLSPEC
#define DECLSPEC
Definition:
SDL_internal.h:44
SDL_error.h
SDL_FingerID
Sint64 SDL_FingerID
Definition:
SDL_touch.h:42
SDLCALL
#define SDLCALL
Definition:
SDL_internal.h:45
SDL_GetTouchDevice
SDL_TouchID SDL_GetTouchDevice(int index)
Get the touch ID with the given index, or 0 if the index is invalid.
Definition:
SDL_touch.c:49
index
GLuint index
Definition:
SDL_opengl_glext.h:660
close_code.h
begin_code.h
SDL_Finger
Definition:
SDL_touch.h:45
SDL_GetNumTouchFingers
int SDL_GetNumTouchFingers(SDL_TouchID touchID)
Get the number of active fingers for a given touch device.
Definition:
SDL_touch.c:112
SDL_TouchID
Sint64 SDL_TouchID
Definition:
SDL_touch.h:41
SDL_GetNumTouchDevices
int SDL_GetNumTouchDevices(void)
Get the number of registered touch devices.
Definition:
SDL_touch.c:43
Sint64
int64_t Sint64
Definition:
SDL_stdinc.h:210
SDL_Finger::y
float y
Definition:
SDL_touch.h:48
SDL_stdinc.h
SDL_Finger::pressure
float pressure
Definition:
SDL_touch.h:49
SDL_GetTouchFinger
SDL_Finger * SDL_GetTouchFinger(SDL_TouchID touchID, int index)
Get the finger object of the given touch, with the given index.
Definition:
SDL_touch.c:122
SDL_Finger::id
SDL_FingerID id
Definition:
SDL_touch.h:46
SDL_video.h
SDL_Finger::x
float x
Definition:
SDL_touch.h:47
include
SDL_touch.h
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