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Implemented scrolling factor for smooth trackpad scrolling

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Working platforms platform: OSX, Windows.
Support for almost all ui elements, including project list.

Ported from 304a1f5b5a (#7864).
Fixes #492 and #3913.
This commit is contained in:
Sean Bohan 2017-05-13 12:02:26 +08:00
parent e7328fe5a0
commit ee670f3724
15 changed files with 111 additions and 67 deletions
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24
scene/gui/scroll_container.cpp
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@ -85,20 +85,32 @@ void ScrollContainer::_input_event(const InputEvent &p_input_event) {
const InputEventMouseButton &mb = p_input_event.mouse_button;
if (mb.button_index == BUTTON_WHEEL_UP && mb.pressed) {
// only horizontal is enabled, scroll horizontally
if (h_scroll->is_visible() && !v_scroll->is_visible()) {
// only horizontal is enabled, scroll horizontally
h_scroll->set_val(h_scroll->get_val() - h_scroll->get_page() / 8);
h_scroll->set_val(h_scroll->get_val() - h_scroll->get_page() / 8 * mb.factor);
} else if (v_scroll->is_visible()) {
v_scroll->set_val(v_scroll->get_val() - v_scroll->get_page() / 8);
v_scroll->set_val(v_scroll->get_val() - v_scroll->get_page() / 8 * mb.factor);
}
}
if (mb.button_index == BUTTON_WHEEL_DOWN && mb.pressed) {
// only horizontal is enabled, scroll horizontally
if (h_scroll->is_visible() && !v_scroll->is_visible()) {
// only horizontal is enabled, scroll horizontally
h_scroll->set_val(h_scroll->get_val() + h_scroll->get_page() / 8);
h_scroll->set_val(h_scroll->get_val() + h_scroll->get_page() / 8 * mb.factor);
} else if (v_scroll->is_visible()) {
v_scroll->set_val(v_scroll->get_val() + v_scroll->get_page() / 8);
v_scroll->set_val(v_scroll->get_val() + v_scroll->get_page() / 8 * mb.factor);
}
}
if (mb.button_index == BUTTON_WHEEL_LEFT && mb.pressed) {
if (h_scroll->is_visible()) {
h_scroll->set_val(h_scroll->get_val() - h_scroll->get_page() * mb.factor / 8);
}
}
if (mb.button_index == BUTTON_WHEEL_RIGHT && mb.pressed) {
if (h_scroll->is_visible()) {
h_scroll->set_val(h_scroll->get_val() + h_scroll->get_page() * mb.factor / 8);
}
}