diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/events/SDL_mouse.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/events/SDL_mouse.c | 263 |
1 files changed, 0 insertions, 263 deletions
diff --git a/distrib/sdl-1.2.12/src/events/SDL_mouse.c b/distrib/sdl-1.2.12/src/events/SDL_mouse.c deleted file mode 100644 index f72ef3c..0000000 --- a/distrib/sdl-1.2.12/src/events/SDL_mouse.c +++ /dev/null @@ -1,263 +0,0 @@ -/* - SDL - Simple DirectMedia Layer - Copyright (C) 1997-2006 Sam Lantinga - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - This library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - Sam Lantinga - slouken@libsdl.org -*/ -#include "SDL_config.h" - -/* General mouse handling code for SDL */ - -#include "SDL_events.h" -#include "SDL_events_c.h" -#include "../video/SDL_cursor_c.h" -#include "../video/SDL_sysvideo.h" - - -/* These are static for our mouse handling code */ -static Sint16 SDL_MouseX = 0; -static Sint16 SDL_MouseY = 0; -static Sint16 SDL_DeltaX = 0; -static Sint16 SDL_DeltaY = 0; -static Uint8 SDL_ButtonState = 0; - - -/* Public functions */ -int SDL_MouseInit(void) -{ - /* The mouse is at (0,0) */ - SDL_MouseX = 0; - SDL_MouseY = 0; - SDL_DeltaX = 0; - SDL_DeltaY = 0; - SDL_ButtonState = 0; - - /* That's it! */ - return(0); -} -void SDL_MouseQuit(void) -{ -} - -/* We lost the mouse, so post button up messages for all pressed buttons */ -void SDL_ResetMouse(void) -{ - Uint8 i; - for ( i = 0; i < sizeof(SDL_ButtonState)*8; ++i ) { - if ( SDL_ButtonState & SDL_BUTTON(i) ) { - SDL_PrivateMouseButton(SDL_RELEASED, i, 0, 0); - } - } -} - -Uint8 SDL_GetMouseState (int *x, int *y) -{ - if ( x ) { - *x = SDL_MouseX; - } - if ( y ) { - *y = SDL_MouseY; - } - return(SDL_ButtonState); -} - -Uint8 SDL_GetRelativeMouseState (int *x, int *y) -{ - if ( x ) - *x = SDL_DeltaX; - if ( y ) - *y = SDL_DeltaY; - SDL_DeltaX = 0; - SDL_DeltaY = 0; - return(SDL_ButtonState); -} - -static void ClipOffset(Sint16 *x, Sint16 *y) -{ - /* This clips absolute mouse coordinates when the apparent - display surface is smaller than the real display surface. - */ - if ( SDL_VideoSurface->offset ) { - *y -= SDL_VideoSurface->offset/SDL_VideoSurface->pitch; - *x -= (SDL_VideoSurface->offset%SDL_VideoSurface->pitch)/ - SDL_VideoSurface->format->BytesPerPixel; - } -} - -/* These are global for SDL_eventloop.c */ -int SDL_PrivateMouseMotion(Uint8 buttonstate, int relative, Sint16 x, Sint16 y) -{ - int posted; - Uint16 X, Y; - Sint16 Xrel; - Sint16 Yrel; - - /* Don't handle mouse motion if there's no cursor surface */ - if ( SDL_VideoSurface == NULL ) { - return(0); - } - - /* Default buttonstate is the current one */ - if ( ! buttonstate ) { - buttonstate = SDL_ButtonState; - } - - Xrel = x; - Yrel = y; - if ( relative ) { - /* Push the cursor around */ - x = (SDL_MouseX+x); - y = (SDL_MouseY+y); - } else { - /* Do we need to clip {x,y} ? */ - ClipOffset(&x, &y); - } - - /* Mouse coordinates range from 0 - width-1 and 0 - height-1 */ - if ( x < 0 ) - X = 0; - else - if ( x >= SDL_VideoSurface->w ) - X = SDL_VideoSurface->w-1; - else - X = (Uint16)x; - - if ( y < 0 ) - Y = 0; - else - if ( y >= SDL_VideoSurface->h ) - Y = SDL_VideoSurface->h-1; - else - Y = (Uint16)y; - - /* If not relative mode, generate relative motion from clamped X/Y. - This prevents lots of extraneous large delta relative motion when - the screen is windowed mode and the mouse is outside the window. - */ - if ( ! relative ) { - Xrel = X-SDL_MouseX; - Yrel = Y-SDL_MouseY; - } - - /* Drop events that don't change state */ - if ( ! Xrel && ! Yrel ) { -#if 0 -printf("Mouse event didn't change state - dropped!\n"); -#endif - return(0); - } - - /* Update internal mouse state */ - SDL_ButtonState = buttonstate; - SDL_MouseX = X; - SDL_MouseY = Y; - SDL_DeltaX += Xrel; - SDL_DeltaY += Yrel; - SDL_MoveCursor(SDL_MouseX, SDL_MouseY); - - /* Post the event, if desired */ - posted = 0; - if ( SDL_ProcessEvents[SDL_MOUSEMOTION] == SDL_ENABLE ) { - SDL_Event event; - SDL_memset(&event, 0, sizeof(event)); - event.type = SDL_MOUSEMOTION; - event.motion.state = buttonstate; - event.motion.x = X; - event.motion.y = Y; - event.motion.xrel = Xrel; - event.motion.yrel = Yrel; - if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { - posted = 1; - SDL_PushEvent(&event); - } - } - return(posted); -} - -int SDL_PrivateMouseButton(Uint8 state, Uint8 button, Sint16 x, Sint16 y) -{ - SDL_Event event; - int posted; - int move_mouse; - Uint8 buttonstate; - - SDL_memset(&event, 0, sizeof(event)); - - /* Check parameters */ - if ( x || y ) { - ClipOffset(&x, &y); - move_mouse = 1; - /* Mouse coordinates range from 0 - width-1 and 0 - height-1 */ - if ( x < 0 ) - x = 0; - else - if ( x >= SDL_VideoSurface->w ) - x = SDL_VideoSurface->w-1; - - if ( y < 0 ) - y = 0; - else - if ( y >= SDL_VideoSurface->h ) - y = SDL_VideoSurface->h-1; - } else { - move_mouse = 0; - } - if ( ! x ) - x = SDL_MouseX; - if ( ! y ) - y = SDL_MouseY; - - /* Figure out which event to perform */ - buttonstate = SDL_ButtonState; - switch ( state ) { - case SDL_PRESSED: - event.type = SDL_MOUSEBUTTONDOWN; - buttonstate |= SDL_BUTTON(button); - break; - case SDL_RELEASED: - event.type = SDL_MOUSEBUTTONUP; - buttonstate &= ~SDL_BUTTON(button); - break; - default: - /* Invalid state -- bail */ - return(0); - } - - /* Update internal mouse state */ - SDL_ButtonState = buttonstate; - if ( move_mouse ) { - SDL_MouseX = x; - SDL_MouseY = y; - SDL_MoveCursor(SDL_MouseX, SDL_MouseY); - } - - /* Post the event, if desired */ - posted = 0; - if ( SDL_ProcessEvents[event.type] == SDL_ENABLE ) { - event.button.state = state; - event.button.button = button; - event.button.x = x; - event.button.y = y; - if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { - posted = 1; - SDL_PushEvent(&event); - } - } - return(posted); -} - |