fixed bugs in mouse motion. wasn't taking care to capture all
motion events relative to the previous mouse position. for example, if two mouse events arrive, the first at x+1,y and the second at x+2,y, we used to compute deltas of 1,0 and 2,0 instead of 1,0 and 1,0. that's fixed. also worked around a bug (probably) in windows that caused a motion event after a SetCursorPos() to be lost or reported one pixel off from the correct position. now using mouse_event() which doesn't have that problem. also fixed calculation of normalized coordinates for mouse_event() when there are multiple displays.
This commit is contained in:
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@ -342,8 +342,8 @@ CMSWindowsSecondaryScreen::mouseMove(SInt32 x, SInt32 y)
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SInt32 x0, y0, w, h;
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getScreenShape(x0, y0, w, h);
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mouse_event(MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE,
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(SInt32)(65535.99 * x / (w - 1)) + x0,
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(SInt32)(65535.99 * y / (h - 1)) + y0,
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(DWORD)((65535.99 * (x - x0)) / (w - 1)),
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(DWORD)((65535.99 * (y - y0)) / (h - 1)),
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0, 0);
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}
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@ -560,8 +560,8 @@ CMSWindowsSecondaryScreen::onEnter(SInt32 x, SInt32 y)
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SInt32 x0, y0, w, h;
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getScreenShape(x0, y0, w, h);
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mouse_event(MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE,
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(DWORD)((65535.99 * x) / (w - 1)) + x0,
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(DWORD)((65535.99 * y) / (h - 1)) + y0,
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(DWORD)((65535.99 * (x - x0)) / (w - 1)),
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(DWORD)((65535.99 * (y - y0)) / (h - 1)),
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0, 0);
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// show cursor
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@ -110,12 +110,16 @@ CMSWindowsPrimaryScreen::open(CServer* server)
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m_markReceived = 0;
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nextMark();
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// save cursor pos
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POINT pos;
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GetCursorPos(&pos);
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m_x = pos.x;
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m_y = pos.y;
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// send screen info
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SInt32 x, y, w, h;
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getScreenShape(x, y, w, h);
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POINT pos;
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GetCursorPos(&pos);
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m_server->setInfo(x, y, w, h, getJumpZoneSize(), pos.x, pos.y);
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m_server->setInfo(x, y, w, h, getJumpZoneSize(), m_x, m_y);
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// compute center pixel of primary screen
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m_xCenter = GetSystemMetrics(SM_CXSCREEN) >> 1;
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@ -174,7 +178,7 @@ CMSWindowsPrimaryScreen::leave()
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updateKeys();
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// warp mouse to center of screen
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warpCursor(m_xCenter, m_yCenter);
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warpCursorToCenter();
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// ignore this many mouse motion events (not including the already
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// queued events). on (at least) the win2k login desktop, one
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@ -182,6 +186,7 @@ CMSWindowsPrimaryScreen::leave()
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// warpCursor(). i don't know why it does that and other desktops
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// don't have the same problem. anyway, simply ignoring that event
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// works around it.
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// FIXME -- is this true now that we're using mouse_event?
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m_mouseMoveIgnore = 1;
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// disable ctrl+alt+del, alt+tab, etc
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@ -240,6 +245,24 @@ CMSWindowsPrimaryScreen::warpCursor(SInt32 x, SInt32 y)
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{
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// set the cursor position without generating an event
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SetCursorPos(x, y);
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// save position as last position
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m_x = x;
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m_y = y;
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}
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void
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CMSWindowsPrimaryScreen::warpCursorToCenter()
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{
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// warp to center. the extra info tells the hook DLL to send
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// SYNERGY_MSG_POST_WARP instead of SYNERGY_MSG_MOUSE_MOVE.
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SInt32 x, y, w, h;
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getScreenShape(x, y, w, h);
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mouse_event(MOUSEEVENTF_ABSOLUTE | MOUSEEVENTF_MOVE,
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(DWORD)((65535.99 * (m_xCenter - x)) / (w - 1)),
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(DWORD)((65535.99 * (m_yCenter - y)) / (h - 1)),
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0,
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0x12345678);
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}
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void
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@ -451,16 +474,21 @@ CMSWindowsPrimaryScreen::onPreTranslate(MSG* msg)
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m_server->onMouseMovePrimary(x, y);
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}
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else {
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// get mouse deltas
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x -= m_xCenter;
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y -= m_yCenter;
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// compute motion delta. this is relative to the
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// last known mouse position.
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x -= m_x;
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y -= m_y;
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// save position to compute delta of next motion
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m_x = static_cast<SInt32>(msg->wParam);
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m_y = static_cast<SInt32>(msg->lParam);
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// ignore if the mouse didn't move or we're ignoring
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// motion.
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if (m_mouseMoveIgnore == 0) {
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if (x != 0 && y != 0) {
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// warp mouse back to center
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warpCursor(m_xCenter, m_yCenter);
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if (x != 0 || y != 0) {
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// back to center
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warpCursorToCenter();
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// send motion
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m_server->onMouseMoveSecondary(x, y);
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@ -474,6 +502,11 @@ CMSWindowsPrimaryScreen::onPreTranslate(MSG* msg)
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}
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return true;
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case SYNERGY_MSG_POST_WARP:
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m_x = static_cast<SInt32>(msg->wParam);
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m_y = static_cast<SInt32>(msg->lParam);
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return true;
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case WM_TIMER:
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// if current desktop is not the input desktop then switch to it
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if (!m_is95Family) {
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@ -566,7 +599,7 @@ CMSWindowsPrimaryScreen::onEvent(HWND hwnd, UINT msg,
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// warp mouse to center if active
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if (m_active) {
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warpCursor(m_xCenter, m_yCenter);
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warpCursorToCenter();
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}
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// tell hook about resize if not active
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@ -44,6 +44,10 @@ private:
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void onEnter();
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bool onLeave();
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// warp mouse to center of primary display (used when computing
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// motion deltas while mouse is on secondary screen).
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void warpCursorToCenter();
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// discard posted messages
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void nextMark();
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@ -91,6 +95,9 @@ private:
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// map of key state
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BYTE m_keys[256];
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// last mouse position
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SInt32 m_x, m_y;
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// position of center pixel of screen
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SInt32 m_xCenter, m_yCenter;
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@ -169,8 +169,6 @@ mouseHook(int code, WPARAM wParam, LPARAM lParam)
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{
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const MOUSEHOOKSTRUCT* info =
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(const MOUSEHOOKSTRUCT*)lParam;
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SInt32 x = (SInt32)info->pt.x;
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SInt32 y = (SInt32)info->pt.y;
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// we want the cursor to be hidden at all times so we
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// hide the cursor on whatever window has it. but then
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@ -186,7 +184,16 @@ mouseHook(int code, WPARAM wParam, LPARAM lParam)
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}
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// relay the motion
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PostThreadMessage(g_threadID, SYNERGY_MSG_MOUSE_MOVE, x, y);
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SInt32 x = (SInt32)info->pt.x;
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SInt32 y = (SInt32)info->pt.y;
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if (info->dwExtraInfo == 0x12345678) {
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PostThreadMessage(g_threadID,
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SYNERGY_MSG_POST_WARP, x, y);
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}
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else {
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PostThreadMessage(g_threadID,
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SYNERGY_MSG_MOUSE_MOVE, x, y);
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}
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}
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return 1;
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}
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@ -20,7 +20,8 @@
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#define SYNERGY_MSG_KEY WM_APP + 0x0012 // vk code; key data
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#define SYNERGY_MSG_MOUSE_BUTTON WM_APP + 0x0013 // button msg; <unused>
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#define SYNERGY_MSG_MOUSE_MOVE WM_APP + 0x0014 // x; y
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#define SYNERGY_MSG_MOUSE_WHEEL WM_APP + 0x0015 // delta; <unused>
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#define SYNERGY_MSG_POST_WARP WM_APP + 0x0015 // x; y
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#define SYNERGY_MSG_MOUSE_WHEEL WM_APP + 0x0016 // delta; <unused>
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extern "C" {
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@ -151,39 +151,70 @@ CXWindowsPrimaryScreen::run()
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case MotionNotify:
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{
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log((CLOG_DEBUG2 "event: MotionNotify %d,%d", xevent.xmotion.x_root, xevent.xmotion.y_root));
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SInt32 x, y;
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SInt32 x = xevent.xmotion.x_root;
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SInt32 y = xevent.xmotion.y_root;
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if (!m_active) {
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x = xevent.xmotion.x_root;
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y = xevent.xmotion.y_root;
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m_server->onMouseMovePrimary(x, y);
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}
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else {
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// FIXME -- slurp up all remaining motion events?
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// probably not since keystrokes may go to wrong place.
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// compute motion delta. this is relative to the
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// last known mouse position.
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x -= m_x;
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y -= m_y;
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// XXX -- why call XQueryPointer?
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// get mouse deltas
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{
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// save position to compute delta of next motion
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m_x = xevent.xmotion.x_root;
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m_y = xevent.xmotion.y_root;
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// if event was sent then ignore it and discard
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// the event from the mouse warp. this is how we
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// warp the mouse back to the center of the screen
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// without that causing a corresponding motion on
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// the secondary screen.
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if (xevent.xmotion.send_event) {
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// ignore event
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x = 0;
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y = 0;
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// discard events until we find the matching
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// sent event. see below for where the events
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// are sent. we discard the matching sent
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// event and can be sure we've skipped the
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// warp event.
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CDisplayLock display(this);
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Window root, window;
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int xRoot, yRoot, xWindow, yWindow;
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unsigned int mask;
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if (!XQueryPointer(display, m_window, &root, &window,
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&xRoot, &yRoot, &xWindow, &yWindow, &mask)) {
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break;
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}
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// compute position of center of window
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SInt32 x0, y0, w, h;
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getScreenShape(x0, y0, w, h);
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x = xRoot - (w >> 1);
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y = yRoot - (h >> 1);
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// warp mouse back to center
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warpCursorNoLock(display, w >> 1, h >> 1);
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do {
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XMaskEvent(display, PointerMotionMask, &xevent);
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} while (!xevent.xmotion.send_event);
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}
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m_server->onMouseMoveSecondary(x, y);
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// warp mouse back to center
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if (x != 0 || y != 0) {
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CDisplayLock display(this);
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// send an event that we can recognize before
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// the mouse warp.
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XEvent eventBefore = xevent;
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xevent.xmotion.window = m_window;
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xevent.xmotion.time = CurrentTime;
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xevent.xmotion.x = m_xCenter;
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xevent.xmotion.y = m_yCenter;
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xevent.xmotion.x_root = m_xCenter;
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xevent.xmotion.y_root = m_yCenter;
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XEvent eventAfter = eventBefore;
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XSendEvent(display, m_window, False, 0, &xevent);
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// warp mouse back to center
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XWarpPointer(display, None, getRoot(),
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0, 0, 0, 0, m_xCenter, m_yCenter);
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// send an event that we can recognize after
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// the mouse warp.
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XSendEvent(display, m_window, False, 0, &xevent);
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}
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// send event if mouse moved
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if (x != 0 || y != 0) {
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m_server->onMouseMoveSecondary(x, y);
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}
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}
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}
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break;
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@ -221,7 +252,6 @@ CXWindowsPrimaryScreen::open(CServer* server)
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SInt32 x, y, w, h;
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getScreenShape(x, y, w, h);
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int mx, my;
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{
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CDisplayLock display(this);
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@ -230,17 +260,25 @@ CXWindowsPrimaryScreen::open(CServer* server)
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// get mouse position
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Window root, window;
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int xWindow, yWindow;
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int mx, my, xWindow, yWindow;
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unsigned int mask;
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if (!XQueryPointer(display, m_window, &root, &window,
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&mx, &my, &xWindow, &yWindow, &mask)) {
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mx = w >> 1;
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my = h >> 1;
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}
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// save mouse position
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m_x = x;
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m_y = y;
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}
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// save position of center of screen
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m_xCenter = x + (w >> 1);
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m_yCenter = y + (h >> 1);
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// send screen info
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m_server->setInfo(x, y, w, h, getJumpZoneSize(), mx, my);
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m_server->setInfo(x, y, w, h, getJumpZoneSize(), m_x, m_y);
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}
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void
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log((CLOG_DEBUG1 "grabbed pointer and keyboard"));
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// move the mouse to the center of grab window
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SInt32 x, y, w, h;
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getScreenShape(x, y, w, h);
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warpCursorNoLock(display, w >> 1, h >> 1);
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warpCursorNoLock(display, m_xCenter, m_yCenter);
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// local client now active
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m_active = true;
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@ -381,6 +417,10 @@ CXWindowsPrimaryScreen::warpCursorNoLock(Display* display, SInt32 x, SInt32 y)
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PointerMotionMask, &xevent)) {
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// do nothing
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}
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// save position as last position
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m_x = x;
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m_y = y;
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}
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void
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@ -71,6 +71,12 @@ private:
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unsigned int m_numLockMask;
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unsigned int m_capsLockMask;
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unsigned int m_scrollLockMask;
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// last mouse position
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SInt32 m_x, m_y;
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// position of center pixel of screen
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SInt32 m_xCenter, m_yCenter;
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};
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#endif
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