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input: Emulate discrete scrolling from v120 events (#6881)
* seat: avoid sending axis_stop() when source is wheel * fix rounding for absolute discrete values greater than 1 Co-authored-by: Agent_00Ming <agent00ming9366@gmail.com>
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parent
300228b503
commit
8e15f91c24
4 changed files with 49 additions and 6 deletions
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@ -472,6 +472,7 @@ CConfigManager::CConfigManager() {
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m_pConfig->addConfigValue("input:scroll_button_lock", Hyprlang::INT{0});
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m_pConfig->addConfigValue("input:scroll_factor", {1.f});
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m_pConfig->addConfigValue("input:scroll_points", {STRVAL_EMPTY});
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m_pConfig->addConfigValue("input:emulate_discrete_scroll", Hyprlang::INT{1});
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m_pConfig->addConfigValue("input:touchpad:natural_scroll", Hyprlang::INT{0});
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m_pConfig->addConfigValue("input:touchpad:disable_while_typing", Hyprlang::INT{1});
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m_pConfig->addConfigValue("input:touchpad:clickfinger_behavior", Hyprlang::INT{0});
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@ -333,9 +333,7 @@ void CSeatManager::sendPointerAxis(uint32_t timeMs, wl_pointer_axis axis, double
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if (source == 0) {
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p->sendAxisValue120(axis, value120);
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p->sendAxisDiscrete(axis, discrete);
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}
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if (value == 0)
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} else if (value == 0)
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p->sendAxisStop(timeMs, axis);
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}
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}
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@ -760,6 +760,7 @@ void CInputManager::onMouseWheel(IPointer::SAxisEvent e) {
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static auto POFFWINDOWAXIS = CConfigValue<Hyprlang::INT>("input:off_window_axis_events");
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static auto PINPUTSCROLLFACTOR = CConfigValue<Hyprlang::FLOAT>("input:scroll_factor");
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static auto PTOUCHPADSCROLLFACTOR = CConfigValue<Hyprlang::FLOAT>("input:touchpad:scroll_factor");
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static auto PEMULATEDISCRETE = CConfigValue<Hyprlang::INT>("input:emulate_discrete_scroll");
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auto factor = (*PTOUCHPADSCROLLFACTOR <= 0.f || e.source == WL_POINTER_AXIS_SOURCE_FINGER ? *PTOUCHPADSCROLLFACTOR : *PINPUTSCROLLFACTOR);
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@ -798,9 +799,44 @@ void CInputManager::onMouseWheel(IPointer::SAxisEvent e) {
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}
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}
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}
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double deltaDiscrete = (e.deltaDiscrete != 0) ? (factor * e.deltaDiscrete / std::abs(e.deltaDiscrete)) : 0;
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g_pSeatManager->sendPointerAxis(e.timeMs, e.axis, factor * e.delta, deltaDiscrete > 0 ? std::ceil(deltaDiscrete) : std::floor(deltaDiscrete),
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std::round(factor * e.deltaDiscrete), e.source, WL_POINTER_AXIS_RELATIVE_DIRECTION_IDENTICAL);
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double discrete = (e.deltaDiscrete != 0) ? (factor * e.deltaDiscrete / std::abs(e.deltaDiscrete)) : 0;
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double delta = e.delta * factor;
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if (e.source == 0) {
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// if an application supports v120, it should ignore discrete anyways
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if ((*PEMULATEDISCRETE >= 1 && std::abs(e.deltaDiscrete) != 120) || *PEMULATEDISCRETE >= 2) {
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const int interval = factor != 0 ? std::round(120 * (1 / factor)) : 120;
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// reset the accumulator when timeout is reached or direction/axis has changed
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if (std::signbit(e.deltaDiscrete) != m_ScrollWheelState.lastEventSign || e.axis != m_ScrollWheelState.lastEventAxis ||
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e.timeMs - m_ScrollWheelState.lastEventTime > 500 /* 500ms taken from libinput default timeout */) {
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m_ScrollWheelState.accumulatedScroll = 0;
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// send 1 discrete on first event for responsiveness
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discrete = std::copysign(1, e.deltaDiscrete);
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} else
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discrete = 0;
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for (int ac = m_ScrollWheelState.accumulatedScroll; ac >= interval; ac -= interval) {
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discrete += std::copysign(1, e.deltaDiscrete);
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m_ScrollWheelState.accumulatedScroll -= interval;
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}
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m_ScrollWheelState.lastEventSign = std::signbit(e.deltaDiscrete);
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m_ScrollWheelState.lastEventAxis = e.axis;
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m_ScrollWheelState.lastEventTime = e.timeMs;
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m_ScrollWheelState.accumulatedScroll += std::abs(e.deltaDiscrete);
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delta = 15.0 * discrete * factor;
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}
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}
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int32_t value120 = std::round(factor * e.deltaDiscrete);
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int32_t deltaDiscrete = std::abs(discrete) != 0 && std::abs(discrete) < 1 ? std::copysign(1, discrete) : std::round(discrete);
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g_pSeatManager->sendPointerAxis(e.timeMs, e.axis, delta, deltaDiscrete, value120, e.source, WL_POINTER_AXIS_RELATIVE_DIRECTION_IDENTICAL);
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}
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Vector2D CInputManager::getMouseCoordsInternal() {
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@ -278,6 +278,14 @@ class CInputManager {
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void restoreCursorIconToApp(); // no-op if restored
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// discrete scrolling emulation using v120 data
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struct {
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bool lastEventSign = 0;
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bool lastEventAxis = 0;
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uint32_t lastEventTime = 0;
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uint32_t accumulatedScroll = 0;
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} m_ScrollWheelState;
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friend class CKeybindManager;
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friend class CWLSurface;
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};
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