1 /* 2 Simple DirectMedia Layer 3 Copyright (C) 1997-2014 Sam Lantinga <slouken (at) libsdl.org> 4 5 This software is provided 'as-is', without any express or implied 6 warranty. In no event will the authors be held liable for any damages 7 arising from the use of this software. 8 9 Permission is granted to anyone to use this software for any purpose, 10 including commercial applications, and to alter it and redistribute it 11 freely, subject to the following restrictions: 12 13 1. The origin of this software must not be misrepresented; you must not 14 claim that you wrote the original software. If you use this software 15 in a product, an acknowledgment in the product documentation would be 16 appreciated but is not required. 17 2. Altered source versions must be plainly marked as such, and must not be 18 misrepresented as being the original software. 19 3. This notice may not be removed or altered from any source distribution. 20 */ 21 22 /** 23 * \file SDL_mouse.h 24 * 25 * Include file for SDL mouse event handling. 26 */ 27 28 #ifndef _SDL_mouse_h 29 #define _SDL_mouse_h 30 31 #include "SDL_stdinc.h" 32 #include "SDL_error.h" 33 #include "SDL_video.h" 34 35 #include "begin_code.h" 36 /* Set up for C function definitions, even when using C++ */ 37 #ifdef __cplusplus 38 extern "C" { 39 #endif 40 41 typedef struct SDL_Cursor SDL_Cursor; /* Implementation dependent */ 42 43 /** 44 * \brief Cursor types for SDL_CreateSystemCursor. 45 */ 46 typedef enum 47 { 48 SDL_SYSTEM_CURSOR_ARROW, /**< Arrow */ 49 SDL_SYSTEM_CURSOR_IBEAM, /**< I-beam */ 50 SDL_SYSTEM_CURSOR_WAIT, /**< Wait */ 51 SDL_SYSTEM_CURSOR_CROSSHAIR, /**< Crosshair */ 52 SDL_SYSTEM_CURSOR_WAITARROW, /**< Small wait cursor (or Wait if not available) */ 53 SDL_SYSTEM_CURSOR_SIZENWSE, /**< Double arrow pointing northwest and southeast */ 54 SDL_SYSTEM_CURSOR_SIZENESW, /**< Double arrow pointing northeast and southwest */ 55 SDL_SYSTEM_CURSOR_SIZEWE, /**< Double arrow pointing west and east */ 56 SDL_SYSTEM_CURSOR_SIZENS, /**< Double arrow pointing north and south */ 57 SDL_SYSTEM_CURSOR_SIZEALL, /**< Four pointed arrow pointing north, south, east, and west */ 58 SDL_SYSTEM_CURSOR_NO, /**< Slashed circle or crossbones */ 59 SDL_SYSTEM_CURSOR_HAND, /**< Hand */ 60 SDL_NUM_SYSTEM_CURSORS 61 } SDL_SystemCursor; 62 63 /* Function prototypes */ 64 65 /** 66 * \brief Get the window which currently has mouse focus. 67 */ 68 extern DECLSPEC SDL_Window * SDLCALL SDL_GetMouseFocus(void); 69 70 /** 71 * \brief Retrieve the current state of the mouse. 72 * 73 * The current button state is returned as a button bitmask, which can 74 * be tested using the SDL_BUTTON(X) macros, and x and y are set to the 75 * mouse cursor position relative to the focus window for the currently 76 * selected mouse. You can pass NULL for either x or y. 77 */ 78 extern DECLSPEC Uint32 SDLCALL SDL_GetMouseState(int *x, int *y); 79 80 /** 81 * \brief Retrieve the relative state of the mouse. 82 * 83 * The current button state is returned as a button bitmask, which can 84 * be tested using the SDL_BUTTON(X) macros, and x and y are set to the 85 * mouse deltas since the last call to SDL_GetRelativeMouseState(). 86 */ 87 extern DECLSPEC Uint32 SDLCALL SDL_GetRelativeMouseState(int *x, int *y); 88 89 /** 90 * \brief Moves the mouse to the given position within the window. 91 * 92 * \param window The window to move the mouse into, or NULL for the current mouse focus 93 * \param x The x coordinate within the window 94 * \param y The y coordinate within the window 95 * 96 * \note This function generates a mouse motion event 97 */ 98 extern DECLSPEC void SDLCALL SDL_WarpMouseInWindow(SDL_Window * window, 99 int x, int y); 100 101 /** 102 * \brief Set relative mouse mode. 103 * 104 * \param enabled Whether or not to enable relative mode 105 * 106 * \return 0 on success, or -1 if relative mode is not supported. 107 * 108 * While the mouse is in relative mode, the cursor is hidden, and the 109 * driver will try to report continuous motion in the current window. 110 * Only relative motion events will be delivered, the mouse position 111 * will not change. 112 * 113 * \note This function will flush any pending mouse motion. 114 * 115 * \sa SDL_GetRelativeMouseMode() 116 */ 117 extern DECLSPEC int SDLCALL SDL_SetRelativeMouseMode(SDL_bool enabled); 118 119 /** 120 * \brief Query whether relative mouse mode is enabled. 121 * 122 * \sa SDL_SetRelativeMouseMode() 123 */ 124 extern DECLSPEC SDL_bool SDLCALL SDL_GetRelativeMouseMode(void); 125 126 /** 127 * \brief Create a cursor, using the specified bitmap data and 128 * mask (in MSB format). 129 * 130 * The cursor width must be a multiple of 8 bits. 131 * 132 * The cursor is created in black and white according to the following: 133 * <table> 134 * <tr><td> data </td><td> mask </td><td> resulting pixel on screen </td></tr> 135 * <tr><td> 0 </td><td> 1 </td><td> White </td></tr> 136 * <tr><td> 1 </td><td> 1 </td><td> Black </td></tr> 137 * <tr><td> 0 </td><td> 0 </td><td> Transparent </td></tr> 138 * <tr><td> 1 </td><td> 0 </td><td> Inverted color if possible, black 139 * if not. </td></tr> 140 * </table> 141 * 142 * \sa SDL_FreeCursor() 143 */ 144 extern DECLSPEC SDL_Cursor *SDLCALL SDL_CreateCursor(const Uint8 * data, 145 const Uint8 * mask, 146 int w, int h, int hot_x, 147 int hot_y); 148 149 /** 150 * \brief Create a color cursor. 151 * 152 * \sa SDL_FreeCursor() 153 */ 154 extern DECLSPEC SDL_Cursor *SDLCALL SDL_CreateColorCursor(SDL_Surface *surface, 155 int hot_x, 156 int hot_y); 157 158 /** 159 * \brief Create a system cursor. 160 * 161 * \sa SDL_FreeCursor() 162 */ 163 extern DECLSPEC SDL_Cursor *SDLCALL SDL_CreateSystemCursor(SDL_SystemCursor id); 164 165 /** 166 * \brief Set the active cursor. 167 */ 168 extern DECLSPEC void SDLCALL SDL_SetCursor(SDL_Cursor * cursor); 169 170 /** 171 * \brief Return the active cursor. 172 */ 173 extern DECLSPEC SDL_Cursor *SDLCALL SDL_GetCursor(void); 174 175 /** 176 * \brief Return the default cursor. 177 */ 178 extern DECLSPEC SDL_Cursor *SDLCALL SDL_GetDefaultCursor(void); 179 180 /** 181 * \brief Frees a cursor created with SDL_CreateCursor(). 182 * 183 * \sa SDL_CreateCursor() 184 */ 185 extern DECLSPEC void SDLCALL SDL_FreeCursor(SDL_Cursor * cursor); 186 187 /** 188 * \brief Toggle whether or not the cursor is shown. 189 * 190 * \param toggle 1 to show the cursor, 0 to hide it, -1 to query the current 191 * state. 192 * 193 * \return 1 if the cursor is shown, or 0 if the cursor is hidden. 194 */ 195 extern DECLSPEC int SDLCALL SDL_ShowCursor(int toggle); 196 197 /** 198 * Used as a mask when testing buttons in buttonstate. 199 * - Button 1: Left mouse button 200 * - Button 2: Middle mouse button 201 * - Button 3: Right mouse button 202 */ 203 #define SDL_BUTTON(X) (1 << ((X)-1)) 204 #define SDL_BUTTON_LEFT 1 205 #define SDL_BUTTON_MIDDLE 2 206 #define SDL_BUTTON_RIGHT 3 207 #define SDL_BUTTON_X1 4 208 #define SDL_BUTTON_X2 5 209 #define SDL_BUTTON_LMASK SDL_BUTTON(SDL_BUTTON_LEFT) 210 #define SDL_BUTTON_MMASK SDL_BUTTON(SDL_BUTTON_MIDDLE) 211 #define SDL_BUTTON_RMASK SDL_BUTTON(SDL_BUTTON_RIGHT) 212 #define SDL_BUTTON_X1MASK SDL_BUTTON(SDL_BUTTON_X1) 213 #define SDL_BUTTON_X2MASK SDL_BUTTON(SDL_BUTTON_X2) 214 215 216 /* Ends C function definitions when using C++ */ 217 #ifdef __cplusplus 218 } 219 #endif 220 #include "close_code.h" 221 222 #endif /* _SDL_mouse_h */ 223 224 /* vi: set ts=4 sw=4 expandtab: */ 225
