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Bug 594977 - Part 3: rejigger the Trackpoint hack for older versions of the Synaptics drivers r=roc a=blocker

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This commit is contained in:
Cameron McCormack 2010-12-28 23:16:43 +13:00
parent 29e8c5c29d
commit f1086ecddc
2 changed files with 62 additions and 8 deletions
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66
widget/src/windows/nsWindow.cpp
View File

@ -625,12 +625,50 @@ nsWindow::Create(nsIWidget *aParent,
if (mWindowType != eWindowType_plugin &&
mWindowType != eWindowType_invisible &&
UseTrackPointHack()) {
// Ugly Thinkpad Driver Hack (Bug 507222)
// We create an invisible scrollbar to trick the
// Trackpoint driver into sending us scrolling messages
::CreateWindowW(L"SCROLLBAR", L"FAKETRACKPOINTSCROLLBAR",
WS_CHILD | WS_VISIBLE, 0,0,0,0, mWnd, NULL,
nsToolkit::mDllInstance, NULL);
// Ugly Thinkpad Driver Hack (Bugs 507222 and 594977)
//
// We create two zero-sized windows as descendants of the top-level window,
// like so:
//
// Top-level window (MozillaWindowClass)
// FAKETRACKPOINTSCROLLCONTAINER (MozillaWindowClass)
// FAKETRACKPOINTSCROLLABLE (MozillaWindowClass)
//
// We need to have the middle window, otherwise the Trackpoint driver
// will fail to deliver scroll messages. WM_MOUSEWHEEL messages are
// sent to the FAKETRACKPOINTSCROLLABLE, which then propagate up the
// window hierarchy until they are handled by nsWindow::WindowProc.
// WM_HSCROLL messages are also sent to the FAKETRACKPOINTSCROLLABLE,
// but these do not propagate automatically, so we have the window
// procedure pretend that they were dispatched to the top-level window
// instead.
//
// The FAKETRACKPOINTSCROLLABLE needs to have the specific window styles it
// is given below so that it catches the Trackpoint driver's heuristics.
HWND scrollContainerWnd = ::CreateWindowW
(className.get(), L"FAKETRACKPOINTSCROLLCONTAINER",
WS_CHILD | WS_VISIBLE,
0, 0, 0, 0, mWnd, NULL, nsToolkit::mDllInstance, NULL);
HWND scrollableWnd = ::CreateWindowW
(className.get(), L"FAKETRACKPOINTSCROLLABLE",
WS_CHILD | WS_VISIBLE | WS_VSCROLL | WS_TABSTOP | 0x30,
0, 0, 0, 0, scrollContainerWnd, NULL, nsToolkit::mDllInstance, NULL);
// Give the FAKETRACKPOINTSCROLLABLE window a specific ID so that
// WindowProcInternal can distinguish it from the top-level window
// easily.
::SetWindowLongPtrW(scrollableWnd, GWLP_ID, eFakeTrackPointScrollableID);
// Make FAKETRACKPOINTSCROLLABLE use nsWindow::WindowProc, and store the
// old window procedure in its "user data".
WNDPROC oldWndProc;
if (mUnicodeWidget)
oldWndProc = (WNDPROC)::SetWindowLongPtrW(scrollableWnd, GWLP_WNDPROC,
(LONG_PTR)nsWindow::WindowProc);
else
oldWndProc = (WNDPROC)::SetWindowLongPtrA(scrollableWnd, GWLP_WNDPROC,
(LONG_PTR)nsWindow::WindowProc);
::SetWindowLongPtrW(scrollableWnd, GWLP_USERDATA, (LONG_PTR)oldWndProc);
}
// call the event callback to notify about creation
@ -4422,6 +4460,18 @@ LRESULT CALLBACK nsWindow::WindowProcInternal(HWND hWnd, UINT msg, WPARAM wParam
MOZ_FUNCTION_NAME, __LINE__, hWnd, msg,
wParam, lParam);
if (::GetWindowLongPtrW(hWnd, GWLP_ID) == eFakeTrackPointScrollableID) {
// This message was sent to the FAKETRACKPOINTSCROLLABLE.
if (msg == WM_HSCROLL) {
// Route WM_HSCROLL messages to the main window.
hWnd = ::GetParent(::GetParent(hWnd));
} else {
// Handle all other messages with its original window procedure.
WNDPROC prevWindowProc = (WNDPROC)::GetWindowLongPtr(hWnd, GWLP_USERDATA);
return ::CallWindowProcW(prevWindowProc, hWnd, msg, wParam, lParam);
}
}
// Get the window which caused the event and ask it to process the message
nsWindow *someWindow = GetNSWindowPtr(hWnd);
@ -8620,13 +8670,13 @@ IsObsoleteSynapticsDriver()
{
HKEY key;
LONG result = ::RegOpenKeyExW(HKEY_LOCAL_MACHINE,
L"Software\\Synaptics\\SynTP\\Install\\DriverVersion", 0, KEY_READ, &key);
L"Software\\Synaptics\\SynTP\\Install", 0, KEY_READ, &key);
if (result != ERROR_SUCCESS)
return PR_FALSE;
DWORD type;
PRUnichar buf[40];
DWORD buflen = sizeof(buf);
result = ::RegQueryValueExW(key, NULL, NULL, &type, (BYTE*)buf, &buflen);
result = ::RegQueryValueExW(key, L"DriverVersion", NULL, &type, (BYTE*)buf, &buflen);
::RegCloseKey(key);
if (result != ERROR_SUCCESS || type != REG_SZ)
return PR_FALSE;

4
widget/src/windows/nsWindow.h
View File

@ -287,6 +287,10 @@ public:
NS_IMETHOD ReparentNativeWidget(nsIWidget* aNewParent);
protected:
// A magic number to identify the FAKETRACKPOINTSCROLLABLE window created
// when the trackpoint hack is enabled.
enum { eFakeTrackPointScrollableID = 0x46545053 };
/**
* Callbacks
*/