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annotate include/SDL_mouse.h @ 4467:0baef09fe702

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author Eric Wing <ewing . public |-at-| gmail . com> Wed May 12 12:49:28 2010 -0700 (5 days ago) Added the automated test plist file and modified .hgignore to be less aggressive. Discovered that the new plist file for the automated test was not checked in because the .hgignore file was too aggressive. I changed the .hgignore to not ignore the Xcode directory and instead added a longer list of things to ignore.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 17 May 2010 23:13:33 -0700
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 /**
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24 * \file SDL_mouse.h
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25 *
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26 * Include file for SDL mouse event handling.
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27 *
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28 * Please note that this ONLY discusses "mice" with the notion of the
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29 * desktop GUI. You (usually) have one system cursor, and the OS hides
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30 * the hardware details from you. If you plug in 10 mice, all ten move that
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31 * one cursor. For many applications and games, this is perfect, and this
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32 * API has served hundreds of SDL programs well since its birth.
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33 *
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34 * It's not the whole picture, though. If you want more lowlevel control,
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35 * SDL offers a different API, that gives you visibility into each input
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36 * device, multi-touch interfaces, etc.
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37 *
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38 * Those two APIs are incompatible, and you usually should not use both
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39 * at the same time. But for legacy purposes, this API refers to a "mouse"
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40 * when it actually means the system pointer and not a physical mouse.
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41 *
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42 * The other API is in SDL_input.h
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43 */
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44
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45 #ifndef _SDL_mouse_h
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46 #define _SDL_mouse_h
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47
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48 #include "SDL_stdinc.h"
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49 #include "SDL_error.h"
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50 #include "SDL_video.h"
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51
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52 #include "begin_code.h"
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53 /* Set up for C function definitions, even when using C++ */
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54 #ifdef __cplusplus
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55 /* *INDENT-OFF* */
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56 extern "C" {
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57 /* *INDENT-ON* */
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58 #endif
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59
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60 typedef struct SDL_Cursor SDL_Cursor; /* Implementation dependent */
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61
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62
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63 /* Function prototypes */
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65 /**
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66 * \brief Get the window which currently has mouse focus.
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67 */
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68 extern DECLSPEC SDL_Window * SDLCALL SDL_GetMouseFocus(void);
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70 /**
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71 * \brief Retrieve the current state of the mouse.
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72 *
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73 * The current button state is returned as a button bitmask, which can
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74 * be tested using the SDL_BUTTON(X) macros, and x and y are set to the
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75 * mouse cursor position relative to the focus window for the currently
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76 * selected mouse. You can pass NULL for either x or y.
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77 */
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78 extern DECLSPEC Uint8 SDLCALL SDL_GetMouseState(int *x, int *y);
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80 /**
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81 * \brief Retrieve the relative state of the mouse.
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82 *
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83 * The current button state is returned as a button bitmask, which can
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84 * be tested using the SDL_BUTTON(X) macros, and x and y are set to the
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85 * mouse deltas since the last call to SDL_GetRelativeMouseState().
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86 */
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87 extern DECLSPEC Uint8 SDLCALL SDL_GetRelativeMouseState(int *x, int *y);
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89 /**
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90 * \brief Moves the mouse to the given position within the window.
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91 *
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92 * \param window The window to move the mouse into, or NULL for the current mouse focus
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93 * \param x The x coordinate within the window
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94 * \param y The y coordinate within the window
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95 *
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96 * \note This function generates a mouse motion event
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97 */
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98 extern DECLSPEC void SDLCALL SDL_WarpMouseInWindow(SDL_Window * window,
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99 int x, int y);
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101 /**
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102 * \brief Set relative mouse mode.
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103 *
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104 * \param enabled Whether or not to enable relative mode
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105 *
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106 * \return 0 on success, or -1 if relative mode is not supported.
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107 *
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108 * While the mouse is in relative mode, the cursor is hidden, and the
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109 * driver will try to report continuous motion in the current window.
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110 * Only relative motion events will be delivered, the mouse position
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111 * will not change.
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112 *
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113 * \note This function will flush any pending mouse motion.
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114 *
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115 * \sa SDL_GetRelativeMouseMode()
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116 */
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117 extern DECLSPEC int SDLCALL SDL_SetRelativeMouseMode(SDL_bool enabled);
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119 /**
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120 * \brief Query whether relative mouse mode is enabled.
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121 *
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122 * \sa SDL_SetRelativeMouseMode()
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123 */
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124 extern DECLSPEC SDL_bool SDLCALL SDL_GetRelativeMouseMode(void);
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125
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126 /**
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127 * \brief Create a cursor, using the specified bitmap data and
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128 * mask (in MSB format).
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129 *
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130 * The cursor width must be a multiple of 8 bits.
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131 *
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132 * The cursor is created in black and white according to the following:
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133 * <table>
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134 * <tr><td> data </td><td> mask </td><td> resulting pixel on screen </td></tr>
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135 * <tr><td> 0 </td><td> 1 </td><td> White </td></tr>
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136 * <tr><td> 1 </td><td> 1 </td><td> Black </td></tr>
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137 * <tr><td> 0 </td><td> 0 </td><td> Transparent </td></tr>
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138 * <tr><td> 1 </td><td> 0 </td><td> Inverted color if possible, black
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139 * if not. </td></tr>
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140 * </table>
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141 *
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142 * \sa SDL_FreeCursor()
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143 */
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144 extern DECLSPEC SDL_Cursor *SDLCALL SDL_CreateCursor(const Uint8 * data,
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145 const Uint8 * mask,
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146 int w, int h, int hot_x,
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147 int hot_y);
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148
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149 /**
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150 * \brief Set the active cursor.
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151 */
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152 extern DECLSPEC void SDLCALL SDL_SetCursor(SDL_Cursor * cursor);
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153
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154 /**
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155 * \brief Return the active cursor.
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156 */
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157 extern DECLSPEC SDL_Cursor *SDLCALL SDL_GetCursor(void);
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158
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159 /**
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160 * \brief Frees a cursor created with SDL_CreateCursor().
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161 *
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162 * \sa SDL_CreateCursor()
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163 */
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164 extern DECLSPEC void SDLCALL SDL_FreeCursor(SDL_Cursor * cursor);
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165
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166 /**
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167 * \brief Toggle whether or not the cursor is shown.
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168 *
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169 * \param toggle 1 to show the cursor, 0 to hide it, -1 to query the current
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170 * state.
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171 *
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172 * \return 1 if the cursor is shown, or 0 if the cursor is hidden.
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173 */
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174 extern DECLSPEC int SDLCALL SDL_ShowCursor(int toggle);
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175
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176 /**
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177 * Used as a mask when testing buttons in buttonstate.
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178 * - Button 1: Left mouse button
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179 * - Button 2: Middle mouse button
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180 * - Button 3: Right mouse button
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181 */
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182 #define SDL_BUTTON(X) (1 << ((X)-1))
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183 #define SDL_BUTTON_LEFT 1
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184 #define SDL_BUTTON_MIDDLE 2
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185 #define SDL_BUTTON_RIGHT 3
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186 #define SDL_BUTTON_X1 4
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187 #define SDL_BUTTON_X2 5
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188 #define SDL_BUTTON_LMASK SDL_BUTTON(SDL_BUTTON_LEFT)
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189 #define SDL_BUTTON_MMASK SDL_BUTTON(SDL_BUTTON_MIDDLE)
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190 #define SDL_BUTTON_RMASK SDL_BUTTON(SDL_BUTTON_RIGHT)
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191 #define SDL_BUTTON_X1MASK SDL_BUTTON(SDL_BUTTON_X1)
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192 #define SDL_BUTTON_X2MASK SDL_BUTTON(SDL_BUTTON_X2)
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193
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194
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195 /* Ends C function definitions when using C++ */
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196 #ifdef __cplusplus
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197 /* *INDENT-OFF* */
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198 }
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199 /* *INDENT-ON* */
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200 #endif
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201 #include "close_code.h"
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202
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203 #endif /* _SDL_mouse_h */
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204
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205 /* vi: set ts=4 sw=4 expandtab: */