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));
if ( x || y ) {
ClipOffset(&x, &y);
move_mouse = 1;
if ( x < 0 )
x = 0;
else
if ( x >= SDL_MouseMaxX )
x = SDL_MouseMaxX-1;
if ( y < 0 )
y = 0;
else
if ( y >= SDL_MouseMaxY )
y = SDL_MouseMaxY-1;
} else {
move_mouse = 0;
}
if ( ! x )
x = SDL_MouseX;
if ( ! y )
y = SDL_MouseY;
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:
return(0);
}
SDL_ButtonState = buttonstate;
if ( move_mouse ) {
SDL_MouseX = x;
SDL_MouseY = y;
SDL_MoveCursor(SDL_MouseX, SDL_MouseY);
}
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);
}
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);
}
int SDL_PrivateMouseMotion(Uint8 buttonstate, int relative, Sint16 x, Sint16 y)
{
int posted;
Uint16 X, Y;
Sint16 Xrel;
Sint16 Yrel;
if ( ! buttonstate ) {
buttonstate = SDL_ButtonState;
}
Xrel = x;
Yrel = y;
if ( relative ) {
x = (SDL_MouseX+x);
y = (SDL_MouseY+y);
} else {
ClipOffset(&x, &y);
}
if ( x < 0 )
X = 0;
else
if ( x >= SDL_MouseMaxX )
X = SDL_MouseMaxX-1;
else
X = (Uint16)x;
if ( y < 0 )
Y = 0;
else
if ( y >= SDL_MouseMaxY )
Y = SDL_MouseMaxY-1;
else
Y = (Uint16)y;
if ( ! relative ) {
Xrel = X-SDL_MouseX;
Yrel = Y-SDL_MouseY;
}
if ( ! Xrel && ! Yrel ) {
#if 0
printf("Mouse event didn't change state - dropped!\n");
#endif
return(0);
}
SDL_ButtonState = buttonstate;
SDL_MouseX = X;
SDL_MouseY = Y;
SDL_DeltaX += Xrel;
SDL_DeltaY += Yrel;
SDL_MoveCursor(SDL_MouseX, SDL_MouseY);
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);
}
/* 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);
}
