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better one-button trackball

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This commit is contained in:
David Rose 2006-10-11 23:14:19 +00:00
parent f8864484ca
commit d7892c5bb2
1 changed files with 16 additions and 22 deletions
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38
panda/src/tform/trackball.cxx
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@ -66,13 +66,12 @@ Trackball(const string &name) :
watch_button(MouseButton::two());
watch_button(MouseButton::three());
#ifdef IS_OSX
// In OSX mode, we need to use the command and option key in
// conjunction with the (one) mouse button. We can go ahead and
// keep this code live in other platforms too; it doesn't do any
// harm.
// conjunction with the (one) mouse button.
watch_button(KeyboardButton::meta());
watch_button(KeyboardButton::alt());
watch_button(KeyboardButton::control());
#endif
}
////////////////////////////////////////////////////////////////////
@ -558,30 +557,25 @@ do_transmit_data(DataGraphTraverser *, const DataNodeTransmit &input,
int this_button = 0;
if (is_down(MouseButton::one())) {
if (is_down(KeyboardButton::meta())) {
// Wait, the user is holding down the command key in
// conjunction with mouse button 1. This changes its meaning
// to either mouse 2 and/or mouse 3, according to whether the
// alt or control key is also held down.
if (is_down(KeyboardButton::alt())) {
// Command + alt: B2 + B3.
this_button |= B2_MASK | B3_MASK;
} else if (is_down(KeyboardButton::control())) {
// Command + control: B2.
this_button |= B2_MASK;
} else {
// Command key by itself: B3.
#ifdef IS_OSX
if (is_down(KeyboardButton::alt())) {
// B1 + alt (option) = B2.
this_button |= B2_MASK;
if (is_down(KeyboardButton::meta())) {
this_button |= B3_MASK;
}
} else if (is_down(KeyboardButton::meta())) {
// B1 + meta (command) = B3.
this_button |= B3_MASK;
} else {
// Without the command key, a mouse 1 button is a mouse 1
// button.
// Without a special key, B1 is B1.
this_button |= B1_MASK;
}
#else // IS_OSX
this_button |= B1_MASK;
#endif // IS_OSX
}
if (is_down(MouseButton::two())) {
this_button |= B2_MASK;