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102 lines
2.9 KiB
102 lines
2.9 KiB
/* |
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Simple DirectMedia Layer |
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Copyright (C) 1997-2020 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 enum |
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{ |
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SDL_TOUCH_DEVICE_INVALID = -1, |
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SDL_TOUCH_DEVICE_DIRECT, /* touch screen with window-relative coordinates */ |
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SDL_TOUCH_DEVICE_INDIRECT_ABSOLUTE, /* trackpad with absolute device coordinates */ |
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SDL_TOUCH_DEVICE_INDIRECT_RELATIVE /* trackpad with screen cursor-relative coordinates */ |
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} SDL_TouchDeviceType; |
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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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/* Used as the SDL_TouchID for touch events simulated with mouse input */ |
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#define SDL_MOUSE_TOUCHID ((Sint64)-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 type of the given touch device. |
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*/ |
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extern DECLSPEC SDL_TouchDeviceType SDLCALL SDL_GetTouchDeviceType(SDL_TouchID touchID); |
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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: */
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