src/events/SDL_touch_c.h
author Jim Grandpre <jim.tla@gmail.com>
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Added SDL_touch.c/SDL_touch_c.h as slightly modifeind SDL_mouse*. Made reads in touchSimp non-blocking.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2010 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library 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 GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#ifndef _SDL_touch_c_h
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#define _SDL_touch_c_h
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typedef struct SDL_Touch SDL_Touch;
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struct SDL_Touch
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{
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    /* Warp the touch to (x,y) */
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    void (*WarpTouch) (SDL_Touch * touch, SDL_Window * window, int x,
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                       int y);
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    /* Free the touch when it's time */
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    void (*FreeTouch) (SDL_Touch * touch);
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    /* data common for tablets */
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    int pressure;
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    int pressure_max;
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    int pressure_min;
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    int tilt;                   /* for future use */
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    int rotation;               /* for future use */
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    int total_ends;
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    int current_end;
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    /* Data common to all touch */
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    int id;
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    SDL_Window *focus;
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    int which;
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    int x;
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    int y;
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    int z;                      /* for future use */
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    int xdelta;
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    int ydelta;
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    int last_x, last_y;         /* the last reported x and y coordinates */
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    char *name;
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    Uint8 buttonstate;
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    SDL_bool relative_mode;
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    SDL_bool proximity;
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    SDL_bool flush_motion;
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    SDL_Cursor *cursors;
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    SDL_Cursor *def_cursor;
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    SDL_Cursor *cur_cursor;
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    SDL_bool cursor_shown;
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    void *driverdata;
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};
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/* Initialize the touch subsystem */
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extern int SDL_TouchInit(void);
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/* Get the touch at an index */
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extern SDL_Touch *SDL_GetTouch(int index);
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/* Add a touch, possibly reattaching at a particular index (or -1),
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   returning the index of the touch, or -1 if there was an error.
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 */
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extern int SDL_AddTouch(const SDL_Touch * touch, char *name,
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                        int pressure_max, int pressure_min, int ends);
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/* Remove a touch at an index, clearing the slot for later */
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extern void SDL_DelTouch(int index);
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/* Clear the button state of a touch at an index */
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extern void SDL_ResetTouch(int index);
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/* Set the touch focus window */
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extern void SDL_SetTouchFocus(int id, SDL_Window * window);
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/* Send a touch motion event for a touch */
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extern int SDL_SendTouchMotion(int id, int relative, int x, int y, int z);
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/* Send a touch button event for a touch */
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extern int SDL_SendTouchButton(int id, Uint8 state, Uint8 button);
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/* Send a touch wheel event for a touch */
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extern int SDL_SendTouchWheel(int id, int x, int y);
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/* Send a proximity event for a touch */
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extern int SDL_SendProximity(int id, int x, int y, int type);
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/* Shutdown the touch subsystem */
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extern void SDL_TouchQuit(void);
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/* FIXME: Where do these functions go in this header? */
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extern void SDL_ChangeEnd(int id, int end);
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#endif /* _SDL_touch_c_h */
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/* vi: set ts=4 sw=4 expandtab: */