| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | This library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | |
| 23 | /** @file SDL_mouse.h |
| 24 | * Include file for SDL mouse event handling |
| 25 | */ |
| 26 | |
| 27 | #ifndef _SDL_mouse_h |
| 28 | #define _SDL_mouse_h |
| 29 | |
| 30 | #include "SDL_stdinc.h" |
| 31 | #include "SDL_error.h" |
| 32 | #include "SDL_video.h" |
| 33 | |
| 34 | #include "begin_code.h" |
| 35 | /* Set up for C function definitions, even when using C++ */ |
| 36 | #ifdef __cplusplus |
| 37 | extern "C" { |
| 38 | #endif |
| 39 | |
| 40 | typedef struct WMcursor WMcursor; /**< Implementation dependent */ |
| 41 | typedef struct SDL_Cursor { |
| 42 | SDL_Rect area; /**< The area of the mouse cursor */ |
| 43 | Sint16 hot_x, hot_y; /**< The "tip" of the cursor */ |
| 44 | Uint8 *data; /**< B/W cursor data */ |
| 45 | Uint8 *mask; /**< B/W cursor mask */ |
| 46 | Uint8 *save[2]; /**< Place to save cursor area */ |
| 47 | WMcursor *wm_cursor; /**< Window-manager cursor */ |
| 48 | } SDL_Cursor; |
| 49 | |
| 50 | /* Function prototypes */ |
| 51 | /** |
| 52 | * Retrieve the current state of the mouse. |
| 53 | * The current button state is returned as a button bitmask, which can |
| 54 | * be tested using the SDL_BUTTON(X) macros, and x and y are set to the |
| 55 | * current mouse cursor position. You can pass NULL for either x or y. |
| 56 | */ |
| 57 | extern DECLSPEC Uint8 SDLCALL SDL_GetMouseState(int *x, int *y); |
| 58 | |
| 59 | /** |
| 60 | * Retrieve the current state of the mouse. |
| 61 | * The current button state is returned as a button bitmask, which can |
| 62 | * be tested using the SDL_BUTTON(X) macros, and x and y are set to the |
| 63 | * mouse deltas since the last call to SDL_GetRelativeMouseState(). |
| 64 | */ |
| 65 | extern DECLSPEC Uint8 SDLCALL SDL_GetRelativeMouseState(int *x, int *y); |
| 66 | |
| 67 | /** |
| 68 | * Set the position of the mouse cursor (generates a mouse motion event) |
| 69 | */ |
| 70 | extern DECLSPEC void SDLCALL SDL_WarpMouse(Uint16 x, Uint16 y); |
| 71 | |
| 72 | /** |
| 73 | * Create a cursor using the specified data and mask (in MSB format). |
| 74 | * The cursor width must be a multiple of 8 bits. |
| 75 | * |
| 76 | * The cursor is created in black and white according to the following: |
| 77 | * data mask resulting pixel on screen |
| 78 | * 0 1 White |
| 79 | * 1 1 Black |
| 80 | * 0 0 Transparent |
| 81 | * 1 0 Inverted color if possible, black if not. |
| 82 | * |
| 83 | * Cursors created with this function must be freed with SDL_FreeCursor(). |
| 84 | */ |
| 85 | extern DECLSPEC SDL_Cursor * SDLCALL SDL_CreateCursor |
| 86 | (Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y); |
| 87 | |
| 88 | /** |
| 89 | * Set the currently active cursor to the specified one. |
| 90 | * If the cursor is currently visible, the change will be immediately |
| 91 | * represented on the display. |
| 92 | */ |
| 93 | extern DECLSPEC void SDLCALL SDL_SetCursor(SDL_Cursor *cursor); |
| 94 | |
| 95 | /** |
| 96 | * Returns the currently active cursor. |
| 97 | */ |
| 98 | extern DECLSPEC SDL_Cursor * SDLCALL SDL_GetCursor(void); |
| 99 | |
| 100 | /** |
| 101 | * Deallocates a cursor created with SDL_CreateCursor(). |
| 102 | */ |
| 103 | extern DECLSPEC void SDLCALL SDL_FreeCursor(SDL_Cursor *cursor); |
| 104 | |
| 105 | /** |
| 106 | * Toggle whether or not the cursor is shown on the screen. |
| 107 | * The cursor start off displayed, but can be turned off. |
| 108 | * SDL_ShowCursor() returns 1 if the cursor was being displayed |
| 109 | * before the call, or 0 if it was not. You can query the current |
| 110 | * state by passing a 'toggle' value of -1. |
| 111 | */ |
| 112 | extern DECLSPEC int SDLCALL SDL_ShowCursor(int toggle); |
| 113 | |
| 114 | /*@{*/ |
| 115 | /** Used as a mask when testing buttons in buttonstate |
| 116 | * Button 1: Left mouse button |
| 117 | * Button 2: Middle mouse button |
| 118 | * Button 3: Right mouse button |
| 119 | * Button 4: Mouse wheel up (may also be a real button) |
| 120 | * Button 5: Mouse wheel down (may also be a real button) |
| 121 | */ |
| 122 | #define SDL_BUTTON(X) (1 << ((X)-1)) |
| 123 | #define SDL_BUTTON_LEFT 1 |
| 124 | #define SDL_BUTTON_MIDDLE 2 |
| 125 | #define SDL_BUTTON_RIGHT 3 |
| 126 | #define SDL_BUTTON_WHEELUP 4 |
| 127 | #define SDL_BUTTON_WHEELDOWN 5 |
| 128 | #define SDL_BUTTON_X1 6 |
| 129 | #define SDL_BUTTON_X2 7 |
| 130 | #define SDL_BUTTON_LMASK SDL_BUTTON(SDL_BUTTON_LEFT) |
| 131 | #define SDL_BUTTON_MMASK SDL_BUTTON(SDL_BUTTON_MIDDLE) |
| 132 | #define SDL_BUTTON_RMASK SDL_BUTTON(SDL_BUTTON_RIGHT) |
| 133 | #define SDL_BUTTON_X1MASK SDL_BUTTON(SDL_BUTTON_X1) |
| 134 | #define SDL_BUTTON_X2MASK SDL_BUTTON(SDL_BUTTON_X2) |
| 135 | /*@}*/ |
| 136 | |
| 137 | /* Ends C function definitions when using C++ */ |
| 138 | #ifdef __cplusplus |
| 139 | } |
| 140 | #endif |
| 141 | #include "close_code.h" |
| 142 | |
| 143 | #endif /* _SDL_mouse_h */ |