Mercurial > sdl-ios-xcode
annotate src/video/wincommon/SDL_sysmouse.c @ 1361:19418e4422cb
New configure-based build system. Still work in progress, but much improved
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 16 Feb 2006 10:11:48 +0000 |
| parents | c71e05b4dc2e |
| children | d910939febfa |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 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 |
| 0 | 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. |
| 0 | 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 | |
|
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13 Lesser General Public License for more details. |
| 0 | 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 |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
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23 #include "SDL_windows.h" |
| 0 | 24 |
| 25 #include "SDL_mouse.h" | |
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26 #include "../../events/SDL_events_c.h" |
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27 #include "../SDL_cursor_c.h" |
| 0 | 28 #include "SDL_sysmouse_c.h" |
| 29 #include "SDL_lowvideo.h" | |
| 30 | |
| 31 #ifdef _WIN32_WCE | |
| 32 #define USE_STATIC_CURSOR | |
| 33 #endif | |
| 34 | |
| 35 HCURSOR SDL_hcursor = NULL; /* Exported for SDL_eventloop.c */ | |
| 36 | |
| 37 /* The implementation dependent data for the window manager cursor */ | |
| 38 /* For some reason when creating a windows cursor, the ands and xors memory | |
| 39 is not copied, so we need to keep track of it and free it when we are done | |
| 40 with the cursor. If we free the memory prematurely, the app crashes. :-} | |
| 41 */ | |
| 42 struct WMcursor { | |
| 43 HCURSOR curs; | |
| 44 #ifndef USE_STATIC_CURSOR | |
| 45 Uint8 *ands; | |
| 46 Uint8 *xors; | |
| 47 #endif | |
| 48 }; | |
| 49 | |
| 50 /* Convert bits to padded bytes */ | |
| 51 #define PAD_BITS(bits) ((bits+7)/8) | |
| 52 | |
| 53 #ifdef CURSOR_DEBUG | |
| 54 static void PrintBITMAP(FILE *out, char *bits, int w, int h) | |
| 55 { | |
| 56 int i; | |
| 57 unsigned char ch; | |
| 58 | |
| 59 while ( h-- > 0 ) { | |
| 60 for ( i=0; i<w; ++i ) { | |
| 61 if ( (i%8) == 0 ) | |
| 62 ch = *bits++; | |
| 63 if ( ch&0x80 ) | |
| 64 fprintf(out, "X"); | |
| 65 else | |
| 66 fprintf(out, " "); | |
| 67 ch <<= 1; | |
| 68 } | |
| 69 fprintf(out, "\n"); | |
| 70 } | |
| 71 } | |
| 72 #endif | |
| 73 | |
| 74 #ifndef USE_STATIC_CURSOR | |
| 75 /* Local functions to convert the SDL cursor mask into Windows format */ | |
| 76 static void memnot(Uint8 *dst, Uint8 *src, int len) | |
| 77 { | |
| 78 while ( len-- > 0 ) | |
| 79 *dst++ = ~*src++; | |
| 80 } | |
| 81 static void memxor(Uint8 *dst, Uint8 *src1, Uint8 *src2, int len) | |
| 82 { | |
| 83 while ( len-- > 0 ) | |
| 84 *dst++ = (*src1++)^(*src2++); | |
| 85 } | |
| 86 #endif /* !USE_STATIC_CURSOR */ | |
| 87 | |
| 88 void WIN_FreeWMCursor(_THIS, WMcursor *cursor) | |
| 89 { | |
| 90 #ifndef USE_STATIC_CURSOR | |
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Fixed cursor resource leak in Windows (thanks Huib-Jan Imbens!)
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91 if ( cursor->curs == GetCursor() ) |
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92 SetCursor(NULL); |
| 0 | 93 if ( cursor->curs != NULL ) |
| 94 DestroyCursor(cursor->curs); | |
| 95 if ( cursor->ands != NULL ) | |
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96 SDL_free(cursor->ands); |
| 0 | 97 if ( cursor->xors != NULL ) |
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98 SDL_free(cursor->xors); |
| 0 | 99 #endif /* !USE_STATIC_CURSOR */ |
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100 SDL_free(cursor); |
| 0 | 101 } |
| 102 | |
| 103 WMcursor *WIN_CreateWMCursor(_THIS, | |
| 104 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y) | |
| 105 { | |
| 106 #ifdef USE_STATIC_CURSOR | |
| 107 WMcursor *cursor; | |
| 108 | |
| 109 /* Allocate the cursor */ | |
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110 cursor = (WMcursor *)SDL_malloc(sizeof(*cursor)); |
| 0 | 111 if ( cursor ) { |
| 112 cursor->curs = LoadCursor(NULL, IDC_ARROW); | |
| 113 } | |
| 114 return(cursor); | |
| 115 #else | |
| 116 WMcursor *cursor; | |
| 117 int allowed_x; | |
| 118 int allowed_y; | |
| 119 int run, pad, i; | |
| 120 Uint8 *aptr, *xptr; | |
| 121 | |
| 122 /* Check to make sure the cursor size is okay */ | |
| 123 allowed_x = GetSystemMetrics(SM_CXCURSOR); | |
| 124 allowed_y = GetSystemMetrics(SM_CYCURSOR); | |
| 125 if ( (w > allowed_x) || (h > allowed_y) ) { | |
| 126 SDL_SetError("Only cursors of dimension (%dx%d) are allowed", | |
| 127 allowed_x, allowed_y); | |
| 128 return(NULL); | |
| 129 } | |
| 130 | |
| 131 /* Allocate the cursor */ | |
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132 cursor = (WMcursor *)SDL_malloc(sizeof(*cursor)); |
| 0 | 133 if ( cursor == NULL ) { |
| 134 SDL_SetError("Out of memory"); | |
| 135 return(NULL); | |
| 136 } | |
| 137 cursor->curs = NULL; | |
| 138 cursor->ands = NULL; | |
| 139 cursor->xors = NULL; | |
| 140 | |
| 141 /* Pad out to the normal cursor size */ | |
| 142 run = PAD_BITS(w); | |
| 143 pad = PAD_BITS(allowed_x)-run; | |
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144 aptr = cursor->ands = (Uint8 *)SDL_malloc((run+pad)*allowed_y); |
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145 xptr = cursor->xors = (Uint8 *)SDL_malloc((run+pad)*allowed_y); |
| 0 | 146 if ( (aptr == NULL) || (xptr == NULL) ) { |
| 147 WIN_FreeWMCursor(NULL, cursor); | |
| 148 SDL_OutOfMemory(); | |
| 149 return(NULL); | |
| 150 } | |
| 151 for ( i=0; i<h; ++i ) { | |
| 152 memxor(xptr, data, mask, run); | |
| 153 xptr += run; | |
| 154 data += run; | |
| 155 memnot(aptr, mask, run); | |
| 156 mask += run; | |
| 157 aptr += run; | |
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158 SDL_memset(xptr, 0, pad); |
| 0 | 159 xptr += pad; |
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160 SDL_memset(aptr, ~0, pad); |
| 0 | 161 aptr += pad; |
| 162 } | |
| 163 pad += run; | |
| 164 for ( ; i<allowed_y; ++i ) { | |
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165 SDL_memset(xptr, 0, pad); |
| 0 | 166 xptr += pad; |
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167 SDL_memset(aptr, ~0, pad); |
| 0 | 168 aptr += pad; |
| 169 } | |
| 170 | |
| 171 /* Create the cursor */ | |
| 172 cursor->curs = CreateCursor( | |
| 173 (HINSTANCE)GetWindowLong(SDL_Window, GWL_HINSTANCE), | |
| 174 hot_x, hot_y, allowed_x, allowed_y, | |
| 175 cursor->ands, cursor->xors); | |
| 176 if ( cursor->curs == NULL ) { | |
| 177 WIN_FreeWMCursor(NULL, cursor); | |
| 178 SDL_SetError("Windows couldn't create the requested cursor"); | |
| 179 return(NULL); | |
| 180 } | |
| 181 return(cursor); | |
| 182 #endif /* USE_STATIC_CURSOR */ | |
| 183 } | |
| 184 | |
| 185 int WIN_ShowWMCursor(_THIS, WMcursor *cursor) | |
| 186 { | |
| 187 POINT mouse_pos; | |
| 188 | |
| 189 /* The fullscreen cursor must be done in software with DirectInput */ | |
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190 if ( !this->screen || DDRAW_FULLSCREEN() ) { |
| 0 | 191 return(0); |
| 192 } | |
| 193 | |
| 194 /* Set the window cursor to our cursor, if applicable */ | |
| 195 if ( cursor != NULL ) { | |
| 196 SDL_hcursor = cursor->curs; | |
| 197 } else { | |
| 198 SDL_hcursor = NULL; | |
| 199 } | |
| 200 GetCursorPos(&mouse_pos); | |
| 201 if ( PtInRect(&SDL_bounds, mouse_pos) ) { | |
| 202 SetCursor(SDL_hcursor); | |
| 203 } | |
| 204 return(1); | |
| 205 } | |
| 206 | |
| 207 void WIN_WarpWMCursor(_THIS, Uint16 x, Uint16 y) | |
| 208 { | |
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209 if ( DDRAW_FULLSCREEN() ) { |
| 0 | 210 SDL_PrivateMouseMotion(0, 0, x, y); |
| 211 } else if ( mouse_relative) { | |
| 212 /* RJR: March 28, 2000 | |
| 213 leave physical cursor at center of screen if | |
| 214 mouse hidden and grabbed */ | |
| 215 SDL_PrivateMouseMotion(0, 0, x, y); | |
| 216 } else { | |
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217 POINT pt; |
| 0 | 218 pt.x = x; |
| 219 pt.y = y; | |
| 220 ClientToScreen(SDL_Window, &pt); | |
| 221 SetCursorPos(pt.x, pt.y); | |
| 222 } | |
| 223 } | |
| 224 | |
| 225 /* Update the current mouse state and position */ | |
| 226 void WIN_UpdateMouse(_THIS) | |
| 227 { | |
| 228 RECT rect; | |
| 229 POINT pt; | |
| 230 | |
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231 if ( ! DDRAW_FULLSCREEN() ) { |
| 0 | 232 GetClientRect(SDL_Window, &rect); |
| 233 GetCursorPos(&pt); | |
| 234 MapWindowPoints(NULL, SDL_Window, &pt, 1); | |
| 235 if (PtInRect(&rect, pt) && (WindowFromPoint(pt) == SDL_Window)){ | |
| 236 SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS); | |
| 237 SDL_PrivateMouseMotion(0,0, (Sint16)pt.x, (Sint16)pt.y); | |
| 238 } else { | |
| 239 SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS); | |
| 240 } | |
| 241 } | |
| 242 } | |
| 243 | |
| 244 /* Check to see if we need to enter or leave mouse relative mode */ | |
| 245 void WIN_CheckMouseMode(_THIS) | |
| 246 { | |
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247 #ifndef _WIN32_WCE |
| 0 | 248 /* If the mouse is hidden and input is grabbed, we use relative mode */ |
| 249 if ( !(SDL_cursorstate & CURSOR_VISIBLE) && | |
| 250 (this->input_grab != SDL_GRAB_OFF) ) { | |
| 251 mouse_relative = 1; | |
| 252 } else { | |
| 253 mouse_relative = 0; | |
| 254 } | |
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255 #else |
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256 mouse_relative = 0; |
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257 #endif |
| 0 | 258 } |