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SDL_mouse.h
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SDL_mouse.h
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2012 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
/** @file SDL_mouse.h
* Include file for SDL mouse event handling
*/
#ifndef _SDL_mouse_h
#define _SDL_mouse_h
#include "SDL_stdinc.h"
#include "SDL_error.h"
#include "SDL_video.h"
#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
extern "C" {
#endif
typedef struct WMcursor WMcursor; /**< Implementation dependent */
typedef struct SDL_Cursor {
SDL_Rect area; /**< The area of the mouse cursor */
Sint16 hot_x, hot_y; /**< The "tip" of the cursor */
Uint8 *data; /**< B/W cursor data */
Uint8 *mask; /**< B/W cursor mask */
Uint8 *save[2]; /**< Place to save cursor area */
WMcursor *wm_cursor; /**< Window-manager cursor */
} SDL_Cursor;
/* Function prototypes */
/**
* Retrieve the current state of the mouse.
* The current button state is returned as a button bitmask, which can
* be tested using the SDL_BUTTON(X) macros, and x and y are set to the
* current mouse cursor position. You can pass NULL for either x or y.
*/
extern DECLSPEC Uint8 SDLCALL SDL_GetMouseState(int *x, int *y);
/**
* Retrieve the current state of the mouse.
* The current button state is returned as a button bitmask, which can
* be tested using the SDL_BUTTON(X) macros, and x and y are set to the
* mouse deltas since the last call to SDL_GetRelativeMouseState().
*/
extern DECLSPEC Uint8 SDLCALL SDL_GetRelativeMouseState(int *x, int *y);
/**
* Set the position of the mouse cursor (generates a mouse motion event)
*/
extern DECLSPEC void SDLCALL SDL_WarpMouse(Uint16 x, Uint16 y);
/**
* Create a cursor using the specified data and mask (in MSB format).
* The cursor width must be a multiple of 8 bits.
*
* The cursor is created in black and white according to the following:
* data mask resulting pixel on screen
* 0 1 White
* 1 1 Black
* 0 0 Transparent
* 1 0 Inverted color if possible, black if not.
*
* Cursors created with this function must be freed with SDL_FreeCursor().
*/
extern DECLSPEC SDL_Cursor * SDLCALL SDL_CreateCursor
(Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y);
/**
* Set the currently active cursor to the specified one.
* If the cursor is currently visible, the change will be immediately
* represented on the display.
*/
extern DECLSPEC void SDLCALL SDL_SetCursor(SDL_Cursor *cursor);
/**
* Returns the currently active cursor.
*/
extern DECLSPEC SDL_Cursor * SDLCALL SDL_GetCursor(void);
/**
* Deallocates a cursor created with SDL_CreateCursor().
*/
extern DECLSPEC void SDLCALL SDL_FreeCursor(SDL_Cursor *cursor);
/**
* Toggle whether or not the cursor is shown on the screen.
* The cursor start off displayed, but can be turned off.
* SDL_ShowCursor() returns 1 if the cursor was being displayed
* before the call, or 0 if it was not. You can query the current
* state by passing a 'toggle' value of -1.
*/
extern DECLSPEC int SDLCALL SDL_ShowCursor(int toggle);
/*@{*/
/** Used as a mask when testing buttons in buttonstate
* Button 1: Left mouse button
* Button 2: Middle mouse button
* Button 3: Right mouse button
* Button 4: Mouse wheel up (may also be a real button)
* Button 5: Mouse wheel down (may also be a real button)
*/
#define SDL_BUTTON(X) (1 << ((X)-1))
#define SDL_BUTTON_LEFT 1
#define SDL_BUTTON_MIDDLE 2
#define SDL_BUTTON_RIGHT 3
#define SDL_BUTTON_WHEELUP 4
#define SDL_BUTTON_WHEELDOWN 5
#define SDL_BUTTON_X1 6
#define SDL_BUTTON_X2 7
#define SDL_BUTTON_LMASK SDL_BUTTON(SDL_BUTTON_LEFT)
#define SDL_BUTTON_MMASK SDL_BUTTON(SDL_BUTTON_MIDDLE)
#define SDL_BUTTON_RMASK SDL_BUTTON(SDL_BUTTON_RIGHT)
#define SDL_BUTTON_X1MASK SDL_BUTTON(SDL_BUTTON_X1)
#define SDL_BUTTON_X2MASK SDL_BUTTON(SDL_BUTTON_X2)
/*@}*/
/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}
#endif
#include "close_code.h"
#endif /* _SDL_mouse_h */