void GLUTAPIENTRY
glutMotionFunc(GLUTmotionCB motionFunc)
{
/* Hack. Some window managers (4Dwm by default) will mask
motion events if the client is not selecting for button
press and release events. So we select for press and
release events too (being careful to use reference
counting). */
if (__glutCurrentWindow->motion) {
if (!motionFunc) {
/* previous mouseFunc being disabled */
__glutCurrentWindow->buttonUses--;
__glutChangeWindowEventMask(
ButtonPressMask | ButtonReleaseMask,
__glutCurrentWindow->buttonUses > 0);
}
} else {
if (motionFunc) {
/* Previously no mouseFunc, new one being installed. */
__glutCurrentWindow->buttonUses++;
__glutChangeWindowEventMask(
ButtonPressMask | ButtonReleaseMask, True);
}
}
/* Real work of selecting for passive mouse motion. */
__glutChangeWindowEventMask(
Button1MotionMask | Button2MotionMask | Button3MotionMask,
motionFunc != NULL);
__glutCurrentWindow->motion = motionFunc;
}
void GLUTAPIENTRY
glutPassiveMotionFunc(GLUTpassiveCB passiveMotionFunc)
{
__glutChangeWindowEventMask(PointerMotionMask,
passiveMotionFunc != NULL);
/* Passive motion also requires watching enters and leaves so
that a fake passive motion event can be generated on an
enter. */
__glutChangeWindowEventMask(EnterWindowMask | LeaveWindowMask,
__glutCurrentWindow->entry != NULL || passiveMotionFunc != NULL);
__glutCurrentWindow->passive = passiveMotionFunc;
}
void GLUTAPIENTRY
glutSpecialFunc(GLUTspecialCB specialFunc)
{
__glutChangeWindowEventMask(KeyPressMask,
specialFunc != NULL || __glutCurrentWindow->keyboard != NULL);
__glutCurrentWindow->special = specialFunc;
}
/* CENTRY */
void GLUTAPIENTRY
glutKeyboardFunc(GLUTkeyboardCB keyboardFunc)
{
__glutChangeWindowEventMask(KeyPressMask,
keyboardFunc != NULL || __glutCurrentWindow->special != NULL);
__glutCurrentWindow->keyboard = keyboardFunc;
}
void GLUTAPIENTRY
glutSpecialUpFunc(GLUTspecialCB specialUpFunc)
{
__glutChangeWindowEventMask(KeyReleaseMask,
specialUpFunc != NULL || __glutCurrentWindow->keyboardUp != NULL);
__glutCurrentWindow->specialUp = specialUpFunc;
}
void GLUTAPIENTRY
glutEntryFunc(GLUTentryCB entryFunc)
{
__glutChangeWindowEventMask(EnterWindowMask | LeaveWindowMask,
entryFunc != NULL || __glutCurrentWindow->passive);
__glutCurrentWindow->entry = entryFunc;
if (!entryFunc) {
__glutCurrentWindow->entryState = -1;
}
}
void GLUTAPIENTRY
glutWindowStatusFunc(GLUTwindowStatusCB windowStatusFunc)
{
__glutChangeWindowEventMask(VisibilityChangeMask,
windowStatusFunc != NULL);
__glutCurrentWindow->windowStatus = windowStatusFunc;
if (!windowStatusFunc) {
/* Make state invalid. */
__glutCurrentWindow->visState = -1;
}
}
void GLUTAPIENTRY
glutMouseFunc(GLUTmouseCB mouseFunc)
{
if (__glutCurrentWindow->mouse) {
if (!mouseFunc) {
/* Previous mouseFunc being disabled. */
__glutCurrentWindow->buttonUses--;
__glutChangeWindowEventMask(
ButtonPressMask | ButtonReleaseMask,
__glutCurrentWindow->buttonUses > 0);
}
} else {
if (mouseFunc) {
/* Previously no mouseFunc, new one being installed. */
__glutCurrentWindow->buttonUses++;
__glutChangeWindowEventMask(
ButtonPressMask | ButtonReleaseMask, True);
}
}
__glutCurrentWindow->mouse = mouseFunc;
}
void GLUTAPIENTRY
glutDetachMenu(int button)
{
if (__glutMappedMenu) {
__glutMenuModificationError();
}
if (__glutCurrentWindow->menu[button] > 0) {
__glutCurrentWindow->buttonUses--;
__glutChangeWindowEventMask(ButtonPressMask | ButtonReleaseMask,
__glutCurrentWindow->buttonUses > 0);
__glutCurrentWindow->menu[button] = 0;
}
}
