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Support mouse wheel events

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Emitting button/press release events on buttons 4 to 7 to emulate the
vertical and horizontal scrolling.
This commit is contained in:
Martin Gräßlin 2013-05-18 09:21:26 +02:00
parent 5d3aa8e7cf
commit cef62541ce
1 changed files with 21 additions and 3 deletions
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24
egl_wayland_backend.cpp
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@ -169,9 +169,27 @@ static void pointerHandleAxis(void *data, wl_pointer *pointer, uint32_t time, ui
Q_UNUSED(data)
Q_UNUSED(pointer)
Q_UNUSED(time)
Q_UNUSED(axis)
Q_UNUSED(value)
// TODO: implement mouse wheel support
uint8_t xButton = 0;
const int delta = wl_fixed_to_int(value);
if (delta == 0) {
return;
}
switch (axis) {
case WL_POINTER_AXIS_VERTICAL_SCROLL:
xButton = delta > 0 ? XCB_BUTTON_INDEX_5 : XCB_BUTTON_INDEX_4;
break;
case WL_POINTER_AXIS_HORIZONTAL_SCROLL:
// no enum values defined for buttons larger than 5
xButton = delta > 0 ? 7 : 6;
break;
default:
// doesn't exist
return;
}
for (int i = 0; i < qAbs(delta); ++i) {
xcb_test_fake_input(connection(), XCB_BUTTON_PRESS, xButton, XCB_TIME_CURRENT_TIME, XCB_WINDOW_NONE, 0, 0, 0);
xcb_test_fake_input(connection(), XCB_BUTTON_RELEASE, xButton, XCB_TIME_CURRENT_TIME, XCB_WINDOW_NONE, 0, 0, 0);
}
}
static void keyboardHandleKeymap(void *data, wl_keyboard *keyboard,