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Fix scrolling behavior by accumulating partial ticks

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This commit is contained in:
Cameron Gutman 2016-02-26 14:43:20 -05:00
parent e7b45e5b6c
commit 4f6c547e47
2 changed files with 16 additions and 3 deletions
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15
input.cpp
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@ -112,14 +112,25 @@ bool MoonlightInstance::HandleInputEvent(const pp::InputEvent& event) {
} }
case PP_INPUTEVENT_TYPE_WHEEL: { case PP_INPUTEVENT_TYPE_WHEEL: {
signed char fullTicks;
if (!m_MouseLocked) { if (!m_MouseLocked) {
return false; return false;
} }
pp::WheelInputEvent wheelEvent(event); pp::WheelInputEvent wheelEvent(event);
// FIXME: Handle fractional scroll ticks // Accumulate the current tick value
LiSendScrollEvent((signed char) wheelEvent.GetTicks().y()); m_AccumulatedTicks += wheelEvent.GetTicks().y();
// Compute the number of full ticks
fullTicks = (signed char) m_AccumulatedTicks;
// Send a scroll event if we've completed a full tick
if (fullTicks != 0) {
LiSendScrollEvent(fullTicks);
m_AccumulatedTicks -= fullTicks;
}
return true; return true;
} }

4
moonlight.hpp
View File

@ -44,7 +44,8 @@ class MoonlightInstance : public pp::Instance, public pp::MouseLock {
m_CallbackFactory(this), m_CallbackFactory(this),
m_MouseLocked(false), m_MouseLocked(false),
m_KeyModifiers(0), m_KeyModifiers(0),
m_WaitingForAllModifiersUp(false) { m_WaitingForAllModifiersUp(false),
m_AccumulatedTicks(0) {
// This function MUST be used otherwise sockets don't work (nacl_io_init() doesn't work!) // This function MUST be used otherwise sockets don't work (nacl_io_init() doesn't work!)
nacl_io_init_ppapi(pp_instance(), pp::Module::Get()->get_browser_interface()); nacl_io_init_ppapi(pp_instance(), pp::Module::Get()->get_browser_interface());
@ -135,6 +136,7 @@ class MoonlightInstance : public pp::Instance, public pp::MouseLock {
bool m_MouseLocked; bool m_MouseLocked;
char m_KeyModifiers; char m_KeyModifiers;
bool m_WaitingForAllModifiersUp; bool m_WaitingForAllModifiersUp;
float m_AccumulatedTicks;
}; };
extern MoonlightInstance* g_Instance; extern MoonlightInstance* g_Instance;