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Fix the cursor not always grabbed again correctly after a focus gain

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This commit is contained in:
Victor Levasseur 2016-06-21 17:55:00 +02:00 committed by Lukas Dürrenberger
parent 6f3273b7a6
commit 61526628d1
1 changed files with 61 additions and 42 deletions
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33
src/SFML/Window/Unix/WindowImplX11.cpp
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@ -34,6 +34,7 @@
#include <SFML/System/Err.hpp>
#include <SFML/System/Mutex.hpp>
#include <SFML/System/Lock.hpp>
#include <SFML/System/Sleep.hpp>
#include <xcb/xcb_image.h>
#include <xcb/randr.h>
#include <X11/Xlibint.h>
@ -72,6 +73,8 @@ namespace
XCB_EVENT_MASK_ENTER_WINDOW | XCB_EVENT_MASK_LEAVE_WINDOW |
XCB_EVENT_MASK_VISIBILITY_CHANGE;
static const unsigned int maxTrialsCount = 5;
// Filter the events received by windows (only allow those matching a specific window)
Bool checkEvent(::Display*, XEvent* event, XPointer userData)
{
@ -977,6 +980,9 @@ void WindowImplX11::setMouseCursorGrabbed(bool grabbed)
return;
if (grabbed)
{
// Try multiple times to grab the cursor
for (unsigned int trial = 0; trial < maxTrialsCount; ++trial)
{
sf::priv::ScopedXcbPtr<xcb_generic_error_t> error(NULL);
@ -999,12 +1005,16 @@ void WindowImplX11::setMouseCursorGrabbed(bool grabbed)
if (!error && grabPointerReply && (grabPointerReply->status == XCB_GRAB_STATUS_SUCCESS))
{
m_cursorGrabbed = true;
break;
}
else
{
// The cursor grab failed, trying again after a small sleep
sf::sleep(sf::milliseconds(50));
}
if (!m_cursorGrabbed)
err() << "Failed to grab mouse cursor" << std::endl;
}
}
else
{
ScopedXcbPtr<xcb_generic_error_t> error(xcb_request_check(
@ -1738,6 +1748,9 @@ bool WindowImplX11::processEvent(XEvent& windowEvent)
// Grab cursor
if (m_cursorGrabbed)
{
// Try multiple times to grab the cursor
for (unsigned int trial = 0; trial < maxTrialsCount; ++trial)
{
sf::priv::ScopedXcbPtr<xcb_generic_error_t> error(NULL);
@ -1757,12 +1770,18 @@ bool WindowImplX11::processEvent(XEvent& windowEvent)
&error
));
if (error || !grabPointerReply || (grabPointerReply->status != XCB_GRAB_STATUS_SUCCESS))
if (!error && grabPointerReply && (grabPointerReply->status == XCB_GRAB_STATUS_SUCCESS))
{
err() << "Failed to grab mouse cursor" << std::endl;
m_cursorGrabbed = false;
m_cursorGrabbed = true;
break;
}
// The cursor grab failed, trying again after a small sleep
sf::sleep(sf::milliseconds(50));
}
if (!m_cursorGrabbed)
err() << "Failed to grab mouse cursor" << std::endl;
}
Event event;