Mercurial > sdl-ios-xcode
annotate src/events/SDL_mouse.c @ 320:66f815c147ed
Date: Thu, 28 Mar 2002 09:20:03 +0200
From: "Mike Gorchak" <mike@malva.ua>
Subject: New QNX patch.
Hi !
1. Removed warning (possible bug) with invalid type, passing to the function
in ph_WarpedMotion.
2. Rewritten handler of Ph_WM_RESIZE message, now works, but buggy (old
handler doesn't work at all).
3. Added stub handler for Ph_WM_MAX (maximize) message.
4. Added more #ifdef HAVE_OPENGL to disable OpenGL stuff when it not needed.
5. Added support for SDL_NOFRAME and SDL_RESIZABLE flags (in OpenGL windows
too).
6. Added cosmetic changes, if no SDL_RESIZABLE flag defined, disable resize
handlers in window border and maximize button at caption.
7. Fixed my bug with invalid arguments count passed to PtCreateWidget call.
8. Fixed some palette problems.
9. Updated README.QNX file.
And I changed testgl.c test application:
10. Added in testgl.c application support for SDL_NOFRAME flag and
option -noframe.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 28 Mar 2002 16:20:10 +0000 |
| parents | f6ffac90895c |
| children | a888b3ae31ff |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
297
f6ffac90895c
Updated copyright information for 2002
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
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 | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
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 | |
| 62 Uint8 SDL_GetMouseState (int *x, int *y) | |
| 63 { | |
| 64 if ( x ) | |
| 65 *x = SDL_MouseX; | |
| 66 if ( y ) | |
| 67 *y = SDL_MouseY; | |
| 68 return(SDL_ButtonState); | |
| 69 } | |
| 70 | |
| 71 Uint8 SDL_GetRelativeMouseState (int *x, int *y) | |
| 72 { | |
| 73 if ( x ) | |
| 74 *x = SDL_DeltaX; | |
| 75 if ( y ) | |
| 76 *y = SDL_DeltaY; | |
| 77 SDL_DeltaX = 0; | |
| 78 SDL_DeltaY = 0; | |
| 79 return(SDL_ButtonState); | |
| 80 } | |
| 81 | |
| 82 static void ClipOffset(Sint16 *x, Sint16 *y) | |
| 83 { | |
| 84 /* This clips absolute mouse coordinates when the apparent | |
| 85 display surface is smaller than the real display surface. | |
| 86 */ | |
| 87 if ( SDL_VideoSurface->offset ) { | |
| 88 *y -= SDL_VideoSurface->offset/SDL_VideoSurface->pitch; | |
| 89 *x -= (SDL_VideoSurface->offset%SDL_VideoSurface->pitch)/ | |
| 90 SDL_VideoSurface->format->BytesPerPixel; | |
| 91 } | |
| 92 } | |
| 93 | |
| 94 /* These are global for SDL_eventloop.c */ | |
| 95 int SDL_PrivateMouseMotion(Uint8 buttonstate, int relative, Sint16 x, Sint16 y) | |
| 96 { | |
| 97 int posted; | |
| 98 Uint16 X, Y; | |
| 99 Sint16 Xrel; | |
| 100 Sint16 Yrel; | |
| 101 | |
| 102 /* Don't handle mouse motion if there's no cursor surface */ | |
| 103 if ( SDL_VideoSurface == NULL ) { | |
| 104 return(0); | |
| 105 } | |
| 106 | |
| 107 /* Default buttonstate is the current one */ | |
| 108 if ( ! buttonstate ) { | |
| 109 buttonstate = SDL_ButtonState; | |
| 110 } | |
| 111 | |
| 112 Xrel = x; | |
| 113 Yrel = y; | |
| 114 if ( relative ) { | |
| 115 /* Push the cursor around */ | |
| 116 x = (SDL_MouseX+x); | |
| 117 y = (SDL_MouseY+y); | |
| 118 } else { | |
| 119 /* Do we need to clip {x,y} ? */ | |
| 120 ClipOffset(&x, &y); | |
| 121 } | |
| 122 | |
| 123 /* Mouse coordinates range from 0 - width-1 and 0 - height-1 */ | |
| 124 if ( x < 0 ) | |
| 125 X = 0; | |
| 126 else | |
| 127 if ( x >= SDL_VideoSurface->w ) | |
| 128 X = SDL_VideoSurface->w-1; | |
| 129 else | |
| 130 X = (Uint16)x; | |
| 131 | |
| 132 if ( y < 0 ) | |
| 133 Y = 0; | |
| 134 else | |
| 135 if ( y >= SDL_VideoSurface->h ) | |
| 136 Y = SDL_VideoSurface->h-1; | |
| 137 else | |
| 138 Y = (Uint16)y; | |
| 139 | |
| 140 /* If not relative mode, generate relative motion from clamped X/Y. | |
| 141 This prevents lots of extraneous large delta relative motion when | |
| 142 the screen is windowed mode and the mouse is outside the window. | |
| 143 */ | |
| 144 if ( ! relative ) { | |
| 145 Xrel = X-SDL_MouseX; | |
| 146 Yrel = Y-SDL_MouseY; | |
| 147 } | |
| 148 | |
| 149 /* Update internal mouse state */ | |
| 150 SDL_ButtonState = buttonstate; | |
| 151 SDL_MouseX = X; | |
| 152 SDL_MouseY = Y; | |
| 153 SDL_DeltaX += Xrel; | |
| 154 SDL_DeltaY += Yrel; | |
| 155 SDL_MoveCursor(SDL_MouseX, SDL_MouseY); | |
| 156 | |
| 157 /* Post the event, if desired */ | |
| 158 posted = 0; | |
| 159 if ( SDL_ProcessEvents[SDL_MOUSEMOTION] == SDL_ENABLE ) { | |
| 160 SDL_Event event; | |
| 161 memset(&event, 0, sizeof(event)); | |
| 162 event.type = SDL_MOUSEMOTION; | |
| 163 event.motion.state = buttonstate; | |
| 164 event.motion.x = X; | |
| 165 event.motion.y = Y; | |
| 166 event.motion.xrel = Xrel; | |
| 167 event.motion.yrel = Yrel; | |
| 168 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { | |
| 169 posted = 1; | |
| 170 SDL_PushEvent(&event); | |
| 171 } | |
| 172 } | |
| 173 return(posted); | |
| 174 } | |
| 175 | |
| 176 int SDL_PrivateMouseButton(Uint8 state, Uint8 button, Sint16 x, Sint16 y) | |
| 177 { | |
| 178 SDL_Event event; | |
| 179 int posted; | |
| 180 int move_mouse; | |
| 181 Uint8 buttonstate; | |
| 182 | |
| 183 memset(&event, 0, sizeof(event)); | |
| 184 | |
| 185 /* Check parameters */ | |
| 186 if ( x || y ) { | |
| 187 ClipOffset(&x, &y); | |
| 188 move_mouse = 1; | |
| 189 /* Mouse coordinates range from 0 - width-1 and 0 - height-1 */ | |
| 190 if ( x < 0 ) | |
| 191 x = 0; | |
| 192 else | |
| 193 if ( x >= SDL_VideoSurface->w ) | |
| 194 x = SDL_VideoSurface->w-1; | |
| 195 | |
| 196 if ( y < 0 ) | |
| 197 y = 0; | |
| 198 else | |
| 199 if ( y >= SDL_VideoSurface->h ) | |
| 200 y = SDL_VideoSurface->h-1; | |
| 201 } else { | |
| 202 move_mouse = 0; | |
| 203 } | |
| 204 if ( ! x ) | |
| 205 x = SDL_MouseX; | |
| 206 if ( ! y ) | |
| 207 y = SDL_MouseY; | |
| 208 | |
| 209 /* Figure out which event to perform */ | |
| 210 buttonstate = SDL_ButtonState; | |
| 211 switch ( state ) { | |
| 212 case SDL_PRESSED: | |
| 213 event.type = SDL_MOUSEBUTTONDOWN; | |
| 214 buttonstate |= SDL_BUTTON(button); | |
| 215 break; | |
| 216 case SDL_RELEASED: | |
| 217 event.type = SDL_MOUSEBUTTONUP; | |
| 218 buttonstate &= ~SDL_BUTTON(button); | |
| 219 break; | |
| 220 default: | |
| 221 /* Invalid state -- bail */ | |
| 222 return(0); | |
| 223 } | |
| 224 | |
| 225 /* Update internal mouse state */ | |
| 226 SDL_ButtonState = buttonstate; | |
| 227 if ( move_mouse ) { | |
| 228 SDL_MouseX = x; | |
| 229 SDL_MouseY = y; | |
| 230 SDL_MoveCursor(SDL_MouseX, SDL_MouseY); | |
| 231 } | |
| 232 | |
| 233 /* Post the event, if desired */ | |
| 234 posted = 0; | |
| 235 if ( SDL_ProcessEvents[event.type] == SDL_ENABLE ) { | |
| 236 event.button.state = state; | |
| 237 event.button.button = button; | |
| 238 event.button.x = x; | |
| 239 event.button.y = y; | |
| 240 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { | |
| 241 posted = 1; | |
| 242 SDL_PushEvent(&event); | |
| 243 } | |
| 244 } | |
| 245 return(posted); | |
| 246 } | |
| 247 |