Mercurial > sdl-ios-xcode
annotate src/events/SDL_mouse.c @ 664:abfdc08eb289
Date: Sun, 3 Aug 2003 22:07:57 +0200
From: Max Horn
Subject: SDL OSX fullscreen FIX
the attached patch fixes the fullscreen problems on SDL/OSX. The cause
was that click events are bounded by winRect. Now, winRect is set to
the size of the video surface. But if you e.g. request a 640x420
surface, you might get a 640x480 "real" surface. Still,
SDL_VideoSurface->h will be set to 420! Thus, the upper 60 pixels in my
example received no mouse down events.
My fix simply disables this clipping when in full screen mode - after
all, all clicks then should be inside the screen surface. Higher SDL
functions ensure that the coordinates then are clipped to 640x420. It
works fine in all my tests here. I don't know if it's the right thing
to do in multi screen scenarios, though.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 04 Aug 2003 01:00:30 +0000 |
| parents | 300b46757b7a |
| children | b8d311d90021 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2002
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 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 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* General mouse handling code for SDL */ | |
| 29 | |
| 30 #include <stdio.h> | |
| 31 #include <stdlib.h> | |
| 32 #include <string.h> | |
| 33 | |
| 34 #include "SDL_events.h" | |
| 35 #include "SDL_events_c.h" | |
| 36 #include "SDL_cursor_c.h" | |
| 37 #include "SDL_sysvideo.h" | |
| 38 | |
| 39 | |
| 40 /* These are static for our mouse handling code */ | |
| 41 static Sint16 SDL_MouseX = 0; | |
| 42 static Sint16 SDL_MouseY = 0; | |
| 43 static Sint16 SDL_DeltaX = 0; | |
| 44 static Sint16 SDL_DeltaY = 0; | |
| 45 static Uint8 SDL_ButtonState = 0; | |
| 46 | |
| 47 | |
| 48 /* Public functions */ | |
| 49 int SDL_MouseInit(void) | |
| 50 { | |
| 51 /* The mouse is at (0,0) */ | |
| 52 SDL_MouseX = 0; | |
| 53 SDL_MouseY = 0; | |
| 54 SDL_DeltaX = 0; | |
| 55 SDL_DeltaY = 0; | |
| 56 SDL_ButtonState = 0; | |
| 57 | |
| 58 /* That's it! */ | |
| 59 return(0); | |
| 60 } | |
| 61 | |
|
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62 /* We lost the mouse, so post button up messages for all pressed buttons */ |
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63 void SDL_ResetMouse(void) |
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64 { |
| 518 | 65 Uint8 i; |
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66 for ( i = 0; i < sizeof(SDL_ButtonState)*8; ++i ) { |
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67 if ( SDL_ButtonState & SDL_BUTTON(i) ) { |
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68 SDL_PrivateMouseButton(SDL_RELEASED, i, 0, 0); |
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69 } |
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70 } |
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Sam Lantinga <slouken@libsdl.org>
parents:
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71 } |
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parents:
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72 |
| 0 | 73 Uint8 SDL_GetMouseState (int *x, int *y) |
| 74 { | |
| 75 if ( x ) | |
| 76 *x = SDL_MouseX; | |
| 77 if ( y ) | |
| 78 *y = SDL_MouseY; | |
| 79 return(SDL_ButtonState); | |
| 80 } | |
| 81 | |
| 82 Uint8 SDL_GetRelativeMouseState (int *x, int *y) | |
| 83 { | |
| 84 if ( x ) | |
| 85 *x = SDL_DeltaX; | |
| 86 if ( y ) | |
| 87 *y = SDL_DeltaY; | |
| 88 SDL_DeltaX = 0; | |
| 89 SDL_DeltaY = 0; | |
| 90 return(SDL_ButtonState); | |
| 91 } | |
| 92 | |
| 93 static void ClipOffset(Sint16 *x, Sint16 *y) | |
| 94 { | |
| 95 /* This clips absolute mouse coordinates when the apparent | |
| 96 display surface is smaller than the real display surface. | |
| 97 */ | |
| 98 if ( SDL_VideoSurface->offset ) { | |
| 99 *y -= SDL_VideoSurface->offset/SDL_VideoSurface->pitch; | |
| 100 *x -= (SDL_VideoSurface->offset%SDL_VideoSurface->pitch)/ | |
| 101 SDL_VideoSurface->format->BytesPerPixel; | |
| 102 } | |
| 103 } | |
| 104 | |
| 105 /* These are global for SDL_eventloop.c */ | |
| 106 int SDL_PrivateMouseMotion(Uint8 buttonstate, int relative, Sint16 x, Sint16 y) | |
| 107 { | |
| 108 int posted; | |
| 109 Uint16 X, Y; | |
| 110 Sint16 Xrel; | |
| 111 Sint16 Yrel; | |
| 112 | |
| 113 /* Don't handle mouse motion if there's no cursor surface */ | |
| 114 if ( SDL_VideoSurface == NULL ) { | |
| 115 return(0); | |
| 116 } | |
| 117 | |
| 118 /* Default buttonstate is the current one */ | |
| 119 if ( ! buttonstate ) { | |
| 120 buttonstate = SDL_ButtonState; | |
| 121 } | |
| 122 | |
| 123 Xrel = x; | |
| 124 Yrel = y; | |
| 125 if ( relative ) { | |
| 126 /* Push the cursor around */ | |
| 127 x = (SDL_MouseX+x); | |
| 128 y = (SDL_MouseY+y); | |
| 129 } else { | |
| 130 /* Do we need to clip {x,y} ? */ | |
| 131 ClipOffset(&x, &y); | |
| 132 } | |
| 133 | |
| 134 /* Mouse coordinates range from 0 - width-1 and 0 - height-1 */ | |
| 135 if ( x < 0 ) | |
| 136 X = 0; | |
| 137 else | |
| 138 if ( x >= SDL_VideoSurface->w ) | |
| 139 X = SDL_VideoSurface->w-1; | |
| 140 else | |
| 141 X = (Uint16)x; | |
| 142 | |
| 143 if ( y < 0 ) | |
| 144 Y = 0; | |
| 145 else | |
| 146 if ( y >= SDL_VideoSurface->h ) | |
| 147 Y = SDL_VideoSurface->h-1; | |
| 148 else | |
| 149 Y = (Uint16)y; | |
| 150 | |
| 151 /* If not relative mode, generate relative motion from clamped X/Y. | |
| 152 This prevents lots of extraneous large delta relative motion when | |
| 153 the screen is windowed mode and the mouse is outside the window. | |
| 154 */ | |
| 155 if ( ! relative ) { | |
| 156 Xrel = X-SDL_MouseX; | |
| 157 Yrel = Y-SDL_MouseY; | |
| 158 } | |
| 159 | |
| 160 /* Update internal mouse state */ | |
| 161 SDL_ButtonState = buttonstate; | |
| 162 SDL_MouseX = X; | |
| 163 SDL_MouseY = Y; | |
| 164 SDL_DeltaX += Xrel; | |
| 165 SDL_DeltaY += Yrel; | |
| 166 SDL_MoveCursor(SDL_MouseX, SDL_MouseY); | |
| 167 | |
| 168 /* Post the event, if desired */ | |
| 169 posted = 0; | |
| 170 if ( SDL_ProcessEvents[SDL_MOUSEMOTION] == SDL_ENABLE ) { | |
| 171 SDL_Event event; | |
| 172 memset(&event, 0, sizeof(event)); | |
| 173 event.type = SDL_MOUSEMOTION; | |
| 174 event.motion.state = buttonstate; | |
| 175 event.motion.x = X; | |
| 176 event.motion.y = Y; | |
| 177 event.motion.xrel = Xrel; | |
| 178 event.motion.yrel = Yrel; | |
| 179 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { | |
| 180 posted = 1; | |
| 181 SDL_PushEvent(&event); | |
| 182 } | |
| 183 } | |
| 184 return(posted); | |
| 185 } | |
| 186 | |
| 187 int SDL_PrivateMouseButton(Uint8 state, Uint8 button, Sint16 x, Sint16 y) | |
| 188 { | |
| 189 SDL_Event event; | |
| 190 int posted; | |
| 191 int move_mouse; | |
| 192 Uint8 buttonstate; | |
| 193 | |
| 194 memset(&event, 0, sizeof(event)); | |
| 195 | |
| 196 /* Check parameters */ | |
| 197 if ( x || y ) { | |
| 198 ClipOffset(&x, &y); | |
| 199 move_mouse = 1; | |
| 200 /* Mouse coordinates range from 0 - width-1 and 0 - height-1 */ | |
| 201 if ( x < 0 ) | |
| 202 x = 0; | |
| 203 else | |
| 204 if ( x >= SDL_VideoSurface->w ) | |
| 205 x = SDL_VideoSurface->w-1; | |
| 206 | |
| 207 if ( y < 0 ) | |
| 208 y = 0; | |
| 209 else | |
| 210 if ( y >= SDL_VideoSurface->h ) | |
| 211 y = SDL_VideoSurface->h-1; | |
| 212 } else { | |
| 213 move_mouse = 0; | |
| 214 } | |
| 215 if ( ! x ) | |
| 216 x = SDL_MouseX; | |
| 217 if ( ! y ) | |
| 218 y = SDL_MouseY; | |
| 219 | |
| 220 /* Figure out which event to perform */ | |
| 221 buttonstate = SDL_ButtonState; | |
| 222 switch ( state ) { | |
| 223 case SDL_PRESSED: | |
| 224 event.type = SDL_MOUSEBUTTONDOWN; | |
| 225 buttonstate |= SDL_BUTTON(button); | |
| 226 break; | |
| 227 case SDL_RELEASED: | |
| 228 event.type = SDL_MOUSEBUTTONUP; | |
| 229 buttonstate &= ~SDL_BUTTON(button); | |
| 230 break; | |
| 231 default: | |
| 232 /* Invalid state -- bail */ | |
| 233 return(0); | |
| 234 } | |
| 235 | |
| 236 /* Update internal mouse state */ | |
| 237 SDL_ButtonState = buttonstate; | |
| 238 if ( move_mouse ) { | |
| 239 SDL_MouseX = x; | |
| 240 SDL_MouseY = y; | |
| 241 SDL_MoveCursor(SDL_MouseX, SDL_MouseY); | |
| 242 } | |
| 243 | |
| 244 /* Post the event, if desired */ | |
| 245 posted = 0; | |
| 246 if ( SDL_ProcessEvents[event.type] == SDL_ENABLE ) { | |
| 247 event.button.state = state; | |
| 248 event.button.button = button; | |
| 249 event.button.x = x; | |
| 250 event.button.y = y; | |
| 251 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { | |
| 252 posted = 1; | |
| 253 SDL_PushEvent(&event); | |
| 254 } | |
| 255 } | |
| 256 return(posted); | |
| 257 } | |
| 258 |