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Used MouseKeys accessibility function to show the mouse cursor

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on a secondary screen when there's no physical mouse attached to
the system.  Kinda flaky when a mouse is attached or detached but
seems to work well enough when the device is not attached to start
with and not attached while running synergy.
This commit is contained in:
crs
2004-05-02 16:06:04 +00:00
parent 423dd3b718
commit a1bd77f91a
2 changed files with 134 additions and 1 deletions
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102
lib/platform/CMSWindowsScreen.cpp
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@@ -106,7 +106,9 @@ CMSWindowsScreen::CMSWindowsScreen(bool isPrimary,
m_setMode(NULL),
m_keyState(NULL),
m_suspend(suspend),
m_resume(resume)
m_resume(resume),
m_hasMouse(GetSystemMetrics(SM_MOUSEPRESENT) != 0),
m_showingMouse(false)
{
assert(s_instance != NULL);
assert(s_screen == NULL);
@@ -125,6 +127,7 @@ CMSWindowsScreen::CMSWindowsScreen(bool isPrimary,
updateScreenShape();
m_class = createWindowClass();
m_window = createWindow(m_class, "Synergy");
forceShowCursor();
LOG((CLOG_DEBUG "screen shape: %d,%d %dx%d %s", m_x, m_y, m_w, m_h, m_multimon ? "(multi-monitor)" : ""));
LOG((CLOG_DEBUG "window is 0x%08x", m_window));
}
@@ -240,6 +243,7 @@ CMSWindowsScreen::disable()
m_nextClipboardWindow = NULL;
m_isOnScreen = m_isPrimary;
forceShowCursor();
}
void
@@ -259,6 +263,7 @@ CMSWindowsScreen::enter()
// now on screen
m_isOnScreen = true;
forceShowCursor();
}
bool
@@ -292,6 +297,7 @@ CMSWindowsScreen::leave()
// now off screen
m_isOnScreen = false;
forceShowCursor();
return true;
}
@@ -525,6 +531,36 @@ CMSWindowsScreen::updateKeys()
m_desks->updateKeys();
}
void
CMSWindowsScreen::fakeKeyDown(KeyID id, KeyModifierMask mask,
KeyButton button)
{
CPlatformScreen::fakeKeyDown(id, mask, button);
updateForceShowCursor();
}
void
CMSWindowsScreen::fakeKeyRepeat(KeyID id, KeyModifierMask mask,
SInt32 count, KeyButton button)
{
CPlatformScreen::fakeKeyRepeat(id, mask, count, button);
updateForceShowCursor();
}
void
CMSWindowsScreen::fakeKeyUp(KeyButton button)
{
CPlatformScreen::fakeKeyUp(button);
updateForceShowCursor();
}
void
CMSWindowsScreen::fakeToggle(KeyModifierMask modifier)
{
CPlatformScreen::fakeToggle(modifier);
updateForceShowCursor();
}
HINSTANCE
CMSWindowsScreen::openHookLibrary(const char* name)
{
@@ -829,6 +865,16 @@ CMSWindowsScreen::onEvent(HWND, UINT msg,
}
*result = TRUE;
return true;
case WM_DEVICECHANGE:
forceShowCursor();
break;
case WM_SETTINGCHANGE:
if (wParam == SPI_SETMOUSEKEYS) {
forceShowCursor();
}
break;
}
return false;
@@ -1377,6 +1423,60 @@ CMSWindowsScreen::updateKeysCB(void*)
updateButtons();
}
void
CMSWindowsScreen::forceShowCursor()
{
// check for mouse
m_hasMouse = (GetSystemMetrics(SM_MOUSEPRESENT) != 0);
// decide if we should show the mouse
bool showMouse = (!m_hasMouse && !m_isPrimary && m_isOnScreen);
// show/hide the mouse
if (showMouse != m_showingMouse) {
if (showMouse) {
m_oldMouseKeys.cbSize = sizeof(m_oldMouseKeys);
m_gotOldMouseKeys =
(SystemParametersInfo(SPI_GETMOUSEKEYS,
m_oldMouseKeys.cbSize, &m_oldMouseKeys, 0) != 0);
if (m_gotOldMouseKeys) {
m_mouseKeys = m_oldMouseKeys;
m_showingMouse = true;
updateForceShowCursor();
}
}
else {
if (m_gotOldMouseKeys) {
SystemParametersInfo(SPI_SETMOUSEKEYS,
m_oldMouseKeys.cbSize,
&m_oldMouseKeys, SPIF_SENDCHANGE);
m_showingMouse = false;
}
}
}
}
void
CMSWindowsScreen::updateForceShowCursor()
{
DWORD oldFlags = m_mouseKeys.dwFlags;
// turn on MouseKeys
m_mouseKeys.dwFlags = MKF_AVAILABLE | MKF_MOUSEKEYSON;
// make sure MouseKeys is active in whatever state the NumLock is
// not currently in.
if ((m_keyState->getActiveModifiers() & KeyModifierNumLock) != 0) {
m_mouseKeys.dwFlags |= MKF_REPLACENUMBERS;
}
// update MouseKeys
if (oldFlags != m_mouseKeys.dwFlags) {
SystemParametersInfo(SPI_SETMOUSEKEYS,
m_mouseKeys.cbSize, &m_mouseKeys, SPIF_SENDCHANGE);
}
}
LRESULT CALLBACK
CMSWindowsScreen::wndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{