LRESULT CALLBACK
winWindowProc (HWND hwnd, UINT message,
WPARAM wParam, LPARAM lParam)
{
static winPrivScreenPtr s_pScreenPriv = NULL;
static winScreenInfo *s_pScreenInfo = NULL;
static ScreenPtr s_pScreen = NULL;
static HWND s_hwndLastPrivates = NULL;
static HINSTANCE s_hInstance;
static Bool s_fTracking = FALSE;
static unsigned long s_ulServerGeneration = 0;
int iScanCode;
int i;
/* Watch for server regeneration */
if (g_ulServerGeneration != s_ulServerGeneration)
{
/* Store new server generation */
s_ulServerGeneration = g_ulServerGeneration;
}
/* Only retrieve new privates pointers if window handle is null or changed */
if ((s_pScreenPriv == NULL || hwnd != s_hwndLastPrivates)
&& (s_pScreenPriv = GetProp (hwnd, WIN_SCR_PROP)) != NULL)
{
#if CYGDEBUG
ErrorF ("winWindowProc - Setting privates handle\n");
#endif
s_pScreenInfo = s_pScreenPriv->pScreenInfo;
s_pScreen = s_pScreenInfo->pScreen;
s_hwndLastPrivates = hwnd;
}
else if (s_pScreenPriv == NULL)
{
/* For safety, handle case that should never happen */
s_pScreenInfo = NULL;
s_pScreen = NULL;
s_hwndLastPrivates = NULL;
}
/* Branch on message type */
switch (message)
{
case WM_TRAYICON:
return winHandleIconMessage (hwnd, message, wParam, lParam,
s_pScreenPriv);
case WM_CREATE:
#if CYGDEBUG
ErrorF ("winWindowProc - WM_CREATE\n");
#endif
/*
* Add a property to our display window that references
* this screens' privates.
*
* This allows the window procedure to refer to the
* appropriate window DC and shadow DC for the window that
* it is processing. We use this to repaint exposed
* areas of our display window.
*/
s_pScreenPriv = ((LPCREATESTRUCT) lParam)->lpCreateParams;
s_hInstance = ((LPCREATESTRUCT) lParam)->hInstance;
s_pScreenInfo = s_pScreenPriv->pScreenInfo;
s_pScreen = s_pScreenInfo->pScreen;
s_hwndLastPrivates = hwnd;
SetProp (hwnd, WIN_SCR_PROP, s_pScreenPriv);
/* Store the mode key states so restore doesn't try to restore them */
winStoreModeKeyStates (s_pScreen);
/* Setup tray icon */
if (!s_pScreenInfo->fNoTrayIcon)
{
/*
* NOTE: The WM_CREATE message is processed before CreateWindowEx
* returns, so s_pScreenPriv->hwndScreen is invalid at this point.
* We go ahead and copy our hwnd parameter over top of the screen
* privates hwndScreen so that we have a valid value for
* that member. Otherwise, the tray icon will disappear
* the first time you move the mouse over top of it.
*/
s_pScreenPriv->hwndScreen = hwnd;
winInitNotifyIcon (s_pScreenPriv);
}
return 0;
case WM_DISPLAYCHANGE:
/* We cannot handle a display mode change during initialization */
if (s_pScreenInfo == NULL)
FatalError ("winWindowProc - WM_DISPLAYCHANGE - The display "
"mode changed while we were intializing. This is "
"very bad and unexpected. Exiting.\n");
/*
* We do not care about display changes with
* fullscreen DirectDraw engines, because those engines set
* their own mode when they become active.
*/
if (s_pScreenInfo->fFullScreen
&& (s_pScreenInfo->dwEngine == WIN_SERVER_SHADOW_DD
|| s_pScreenInfo->dwEngine == WIN_SERVER_SHADOW_DDNL
|| s_pScreenInfo->dwEngine == WIN_SERVER_PRIMARY_DD))
{
/*
* Store the new display dimensions and depth.
* We do this here for future compatibility in case we
* ever allow switching from fullscreen to windowed mode.
*/
s_pScreenPriv->dwLastWindowsWidth = GetSystemMetrics (SM_CXSCREEN);
s_pScreenPriv->dwLastWindowsHeight = GetSystemMetrics (SM_CYSCREEN);
s_pScreenPriv->dwLastWindowsBitsPixel
= GetDeviceCaps (s_pScreenPriv->hdcScreen, BITSPIXEL);
break;
}
ErrorF ("winWindowProc - WM_DISPLAYCHANGE - orig bpp: %d, last bpp: %d, "
"new bpp: %d\n",
s_pScreenInfo->dwBPP,
s_pScreenPriv->dwLastWindowsBitsPixel,
wParam);
ErrorF ("winWindowProc - WM_DISPLAYCHANGE - new width: %d "
"new height: %d\n",
LOWORD (lParam), HIWORD (lParam));
/*
* TrueColor --> TrueColor depth changes are disruptive for:
* Windowed:
* Shadow DirectDraw
* Shadow DirectDraw Non-Locking
* Primary DirectDraw
*
* TrueColor --> TrueColor depth changes are non-optimal for:
* Windowed:
* Shadow GDI
*
* FullScreen:
* Shadow GDI
*
* TrueColor --> PseudoColor or vice versa are disruptive for:
* Windowed:
* Shadow DirectDraw
* Shadow DirectDraw Non-Locking
* Primary DirectDraw
* Shadow GDI
*/
/*
* Check for a disruptive change in depth.
* We can only display a message for a disruptive depth change,
* we cannot do anything to correct the situation.
*/
if ((s_pScreenInfo->dwBPP != wParam)
&& (s_pScreenInfo->dwEngine == WIN_SERVER_SHADOW_DD
|| s_pScreenInfo->dwEngine == WIN_SERVER_SHADOW_DDNL
|| s_pScreenInfo->dwEngine == WIN_SERVER_PRIMARY_DD))
{
/* Cannot display the visual until the depth is restored */
ErrorF ("winWindowProc - Disruptive change in depth\n");
/* Display Exit dialog */
winDisplayDepthChangeDialog (s_pScreenPriv);
/* Flag that we have an invalid screen depth */
s_pScreenPriv->fBadDepth = TRUE;
/* Minimize the display window */
ShowWindow (hwnd, SW_MINIMIZE);
}
else
{
/* Flag that we have a valid screen depth */
s_pScreenPriv->fBadDepth = FALSE;
}
/*
* Check for a change in display dimensions.
* We can simply recreate the same-sized primary surface when
* the display dimensions change.
*/
if (s_pScreenPriv->dwLastWindowsWidth != LOWORD (lParam)
|| s_pScreenPriv->dwLastWindowsHeight != HIWORD (lParam))
{
/*
* NOTE: The non-DirectDraw engines set the ReleasePrimarySurface
* and CreatePrimarySurface function pointers to point
* to the no operation function, NoopDDA. This allows us
* to blindly call these functions, even if they are not
* relevant to the current engine (e.g., Shadow GDI).
*/
#if CYGDEBUG
ErrorF ("winWindowProc - WM_DISPLAYCHANGE - Dimensions changed\n");
#endif
/* Release the old primary surface */
(*s_pScreenPriv->pwinReleasePrimarySurface) (s_pScreen);
#if CYGDEBUG
ErrorF ("winWindowProc - WM_DISPLAYCHANGE - Released "
"primary surface\n");
#endif
/* Create the new primary surface */
(*s_pScreenPriv->pwinCreatePrimarySurface) (s_pScreen);
#if CYGDEBUG
ErrorF ("winWindowProc - WM_DISPLAYCHANGE - Recreated "
"primary surface\n");
#endif
}
else
{
#if CYGDEBUG
ErrorF ("winWindowProc - WM_DISPLAYCHANGE - Dimensions did not "
"change\n");
#endif
}
/* Store the new display dimensions and depth */
s_pScreenPriv->dwLastWindowsWidth = GetSystemMetrics (SM_CXSCREEN);
s_pScreenPriv->dwLastWindowsHeight = GetSystemMetrics (SM_CYSCREEN);
s_pScreenPriv->dwLastWindowsBitsPixel
= GetDeviceCaps (s_pScreenPriv->hdcScreen, BITSPIXEL);
break;
case WM_SIZE:
{
SCROLLINFO si;
RECT rcWindow;
int iWidth, iHeight;
#if CYGDEBUG
ErrorF ("winWindowProc - WM_SIZE\n");
#endif
/* Break if we do not use scrollbars */
if (!s_pScreenInfo->fScrollbars
|| !s_pScreenInfo->fDecoration
|| s_pScreenInfo->fRootless
|| s_pScreenInfo->fMultiWindow
|| s_pScreenInfo->fFullScreen)
break;
/* No need to resize if we get minimized */
if (wParam == SIZE_MINIMIZED)
return 0;
/*
* Get the size of the whole window, including client area,
* scrollbars, and non-client area decorations (caption, borders).
* We do this because we need to check if the client area
* without scrollbars is large enough to display the whole visual.
* The new client area size passed by lParam already subtracts
* the size of the scrollbars if they are currently displayed.
* So checking is LOWORD(lParam) == visual_width and
* HIWORD(lParam) == visual_height will never tell us to hide
* the scrollbars because the client area would always be too small.
* GetClientRect returns the same sizes given by lParam, so we
* cannot use GetClientRect either.
*/
GetWindowRect (hwnd, &rcWindow);
iWidth = rcWindow.right - rcWindow.left;
iHeight = rcWindow.bottom - rcWindow.top;
ErrorF ("winWindowProc - WM_SIZE - window w: %d h: %d, "
"new client area w: %d h: %d\n",
iWidth, iHeight, LOWORD (lParam), HIWORD (lParam));
/* Subtract the frame size from the window size. */
iWidth -= 2 * GetSystemMetrics (SM_CXSIZEFRAME);
iHeight -= (2 * GetSystemMetrics (SM_CYSIZEFRAME)
+ GetSystemMetrics (SM_CYCAPTION));
/*
* Update scrollbar page sizes.
* NOTE: If page size == range, then the scrollbar is
* automatically hidden.
*/
/* Is the naked client area large enough to show the whole visual? */
if (iWidth < s_pScreenInfo->dwWidth
|| iHeight < s_pScreenInfo->dwHeight)
{
/* Client area too small to display visual, use scrollbars */
iWidth -= GetSystemMetrics (SM_CXVSCROLL);
iHeight -= GetSystemMetrics (SM_CYHSCROLL);
}
/* Set the horizontal scrollbar page size */
si.cbSize = sizeof (si);
si.fMask = SIF_PAGE | SIF_RANGE;
si.nMin = 0;
si.nMax = s_pScreenInfo->dwWidth - 1;
si.nPage = iWidth;
SetScrollInfo (hwnd, SB_HORZ, &si, TRUE);
/* Set the vertical scrollbar page size */
si.cbSize = sizeof (si);
si.fMask = SIF_PAGE | SIF_RANGE;
si.nMin = 0;
si.nMax = s_pScreenInfo->dwHeight - 1;
si.nPage = iHeight;
SetScrollInfo (hwnd, SB_VERT, &si, TRUE);
/*
* NOTE: Scrollbars may have moved if they were at the
* far right/bottom, so we query their current position.
*/
/* Get the horizontal scrollbar position and set the offset */
si.cbSize = sizeof (si);
si.fMask = SIF_POS;
GetScrollInfo (hwnd, SB_HORZ, &si);
s_pScreenInfo->dwXOffset = -si.nPos;
/* Get the vertical scrollbar position and set the offset */
si.cbSize = sizeof (si);
si.fMask = SIF_POS;
GetScrollInfo (hwnd, SB_VERT, &si);
s_pScreenInfo->dwYOffset = -si.nPos;
}
return 0;
case WM_VSCROLL:
{
SCROLLINFO si;
int iVertPos;
#if CYGDEBUG
ErrorF ("winWindowProc - WM_VSCROLL\n");
#endif
/* Get vertical scroll bar info */
si.cbSize = sizeof (si);
si.fMask = SIF_ALL;
GetScrollInfo (hwnd, SB_VERT, &si);
/* Save the vertical position for comparison later */
iVertPos = si.nPos;
/*
* Don't forget:
* moving the scrollbar to the DOWN, scroll the content UP
*/
switch (LOWORD(wParam))
{
case SB_TOP:
si.nPos = si.nMin;
break;
case SB_BOTTOM:
si.nPos = si.nMax - si.nPage + 1;
break;
case SB_LINEUP:
si.nPos -= 1;
break;
case SB_LINEDOWN:
si.nPos += 1;
break;
case SB_PAGEUP:
si.nPos -= si.nPage;
break;
case SB_PAGEDOWN:
si.nPos += si.nPage;
break;
case SB_THUMBTRACK:
si.nPos = si.nTrackPos;
break;
default:
break;
}
/*
* We retrieve the position after setting it,
* because Windows may adjust it.
*/
si.fMask = SIF_POS;
SetScrollInfo (hwnd, SB_VERT, &si, TRUE);
GetScrollInfo (hwnd, SB_VERT, &si);
/* Scroll the window if the position has changed */
if (si.nPos != iVertPos)
{
/* Save the new offset for bit block transfers, etc. */
s_pScreenInfo->dwYOffset = -si.nPos;
/* Change displayed region in the window */
ScrollWindowEx (hwnd,
0,
iVertPos - si.nPos,
NULL,
NULL,
NULL,
NULL,
SW_INVALIDATE);
/* Redraw the window contents */
UpdateWindow (hwnd);
}
}
return 0;
case WM_HSCROLL:
{
SCROLLINFO si;
int iHorzPos;
#if CYGDEBUG
ErrorF ("winWindowProc - WM_HSCROLL\n");
#endif
/* Get horizontal scroll bar info */
si.cbSize = sizeof (si);
si.fMask = SIF_ALL;
GetScrollInfo (hwnd, SB_HORZ, &si);
/* Save the horizontal position for comparison later */
iHorzPos = si.nPos;
/*
* Don't forget:
* moving the scrollbar to the RIGHT, scroll the content LEFT
*/
switch (LOWORD(wParam))
{
case SB_LEFT:
si.nPos = si.nMin;
break;
case SB_RIGHT:
si.nPos = si.nMax - si.nPage + 1;
break;
case SB_LINELEFT:
si.nPos -= 1;
break;
case SB_LINERIGHT:
si.nPos += 1;
break;
case SB_PAGELEFT:
si.nPos -= si.nPage;
break;
case SB_PAGERIGHT:
si.nPos += si.nPage;
break;
case SB_THUMBTRACK:
si.nPos = si.nTrackPos;
break;
default:
break;
}
/*
* We retrieve the position after setting it,
* because Windows may adjust it.
*/
si.fMask = SIF_POS;
SetScrollInfo (hwnd, SB_HORZ, &si, TRUE);
GetScrollInfo (hwnd, SB_HORZ, &si);
/* Scroll the window if the position has changed */
if (si.nPos != iHorzPos)
{
/* Save the new offset for bit block transfers, etc. */
s_pScreenInfo->dwXOffset = -si.nPos;
/* Change displayed region in the window */
ScrollWindowEx (hwnd,
iHorzPos - si.nPos,
0,
NULL,
NULL,
NULL,
NULL,
SW_INVALIDATE);
/* Redraw the window contents */
UpdateWindow (hwnd);
}
}
return 0;
case WM_GETMINMAXINFO:
{
MINMAXINFO *pMinMaxInfo = (MINMAXINFO *) lParam;
int iCaptionHeight;
int iBorderHeight, iBorderWidth;
#if CYGDEBUG
ErrorF ("winWindowProc - WM_GETMINMAXINFO - pScreenInfo: %08x\n",
s_pScreenInfo);
#endif
/* Can't do anything without screen info */
if (s_pScreenInfo == NULL
|| !s_pScreenInfo->fScrollbars
|| s_pScreenInfo->fFullScreen
|| !s_pScreenInfo->fDecoration
|| s_pScreenInfo->fRootless
|| s_pScreenInfo->fMultiWindow)
break;
/*
* Here we can override the maximum tracking size, which
* is the largest size that can be assigned to our window
* via the sizing border.
*/
/*
* FIXME: Do we only need to do this once, since our visual size
* does not change? Does Windows store this value statically
* once we have set it once?
*/
/* Get the border and caption sizes */
iCaptionHeight = GetSystemMetrics (SM_CYCAPTION);
iBorderWidth = 2 * GetSystemMetrics (SM_CXSIZEFRAME);
iBorderHeight = 2 * GetSystemMetrics (SM_CYSIZEFRAME);
/* Allow the full visual to be displayed */
pMinMaxInfo->ptMaxTrackSize.x
= s_pScreenInfo->dwWidth + iBorderWidth;
pMinMaxInfo->ptMaxTrackSize.y
= s_pScreenInfo->dwHeight + iBorderHeight + iCaptionHeight;
}
return 0;
case WM_ERASEBKGND:
#if CYGDEBUG
ErrorF ("winWindowProc - WM_ERASEBKGND\n");
#endif
/*
* Pretend that we did erase the background but we don't care,
* the application uses the full window estate. This avoids some
* flickering when resizing.
*/
return TRUE;
case WM_PAINT:
#if CYGDEBUG
ErrorF ("winWindowProc - WM_PAINT\n");
#endif
/* Only paint if we have privates and the server is enabled */
if (s_pScreenPriv == NULL
|| !s_pScreenPriv->fEnabled
|| (s_pScreenInfo->fFullScreen && !s_pScreenPriv->fActive)
|| s_pScreenPriv->fBadDepth)
{
/* We don't want to paint */
break;
}
/* Break out here if we don't have a valid paint routine */
if (s_pScreenPriv->pwinBltExposedRegions == NULL)
break;
/* Call the engine dependent repainter */
(*s_pScreenPriv->pwinBltExposedRegions) (s_pScreen);
return 0;
case WM_PALETTECHANGED:
{
#if CYGDEBUG
ErrorF ("winWindowProc - WM_PALETTECHANGED\n");
#endif
/*
* Don't process if we don't have privates or a colormap,
* or if we have an invalid depth.
*/
if (s_pScreenPriv == NULL
|| s_pScreenPriv->pcmapInstalled == NULL
|| s_pScreenPriv->fBadDepth)
break;
/* Return if we caused the palette to change */
if ((HWND) wParam == hwnd)
{
/* Redraw the screen */
(*s_pScreenPriv->pwinRedrawScreen) (s_pScreen);
return 0;
}
/* Reinstall the windows palette */
(*s_pScreenPriv->pwinRealizeInstalledPalette) (s_pScreen);
/* Redraw the screen */
(*s_pScreenPriv->pwinRedrawScreen) (s_pScreen);
return 0;
}
case WM_MOUSEMOVE:
/* We can't do anything without privates */
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
/* Has the mouse pointer crossed screens? */
if (s_pScreen != miPointerCurrentScreen ())
miPointerSetNewScreen (s_pScreenInfo->dwScreen,
GET_X_LPARAM(lParam)-s_pScreenInfo->dwXOffset,
GET_Y_LPARAM(lParam)-s_pScreenInfo->dwYOffset);
/* Are we tracking yet? */
if (!s_fTracking)
{
TRACKMOUSEEVENT tme;
/* Setup data structure */
ZeroMemory (&tme, sizeof (tme));
tme.cbSize = sizeof (tme);
tme.dwFlags = TME_LEAVE;
tme.hwndTrack = hwnd;
/* Call the tracking function */
if (!(*g_fpTrackMouseEvent) (&tme))
ErrorF ("winWindowProc - _TrackMouseEvent failed\n");
/* Flag that we are tracking now */
s_fTracking = TRUE;
}
/* Hide or show the Windows mouse cursor */
if (g_fCursor && (s_pScreenPriv->fActive || s_pScreenInfo->fLessPointer))
{
/* Hide Windows cursor */
g_fCursor = FALSE;
ShowCursor (FALSE);
}
else if (!g_fCursor && !s_pScreenPriv->fActive
&& !s_pScreenInfo->fLessPointer)
{
/* Show Windows cursor */
g_fCursor = TRUE;
ShowCursor (TRUE);
}
/* Deliver absolute cursor position to X Server */
miPointerAbsoluteCursor (GET_X_LPARAM(lParam)-s_pScreenInfo->dwXOffset,
GET_Y_LPARAM(lParam)-s_pScreenInfo->dwYOffset,
g_c32LastInputEventTime = GetTickCount ());
return 0;
case WM_NCMOUSEMOVE:
/*
* We break instead of returning 0 since we need to call
* DefWindowProc to get the mouse cursor changes
* and min/max/close button highlighting in Windows XP.
* The Platform SDK says that you should return 0 if you
* process this message, but it fails to mention that you
* will give up any default functionality if you do return 0.
*/
/* We can't do anything without privates */
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
/* Non-client mouse movement, show Windows cursor */
if (!g_fCursor)
{
g_fCursor = TRUE;
ShowCursor (TRUE);
}
break;
case WM_MOUSELEAVE:
/* Mouse has left our client area */
/* Flag that we are no longer tracking */
s_fTracking = FALSE;
/* Show the mouse cursor, if necessary */
if (!g_fCursor)
{
g_fCursor = TRUE;
ShowCursor (TRUE);
}
return 0;
case WM_LBUTTONDBLCLK:
case WM_LBUTTONDOWN:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
if (s_pScreenInfo->fRootless) SetCapture (hwnd);
return winMouseButtonsHandle (s_pScreen, ButtonPress, Button1, wParam);
case WM_LBUTTONUP:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
if (s_pScreenInfo->fRootless) ReleaseCapture ();
return winMouseButtonsHandle (s_pScreen, ButtonRelease, Button1, wParam);
case WM_MBUTTONDBLCLK:
case WM_MBUTTONDOWN:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
if (s_pScreenInfo->fRootless) SetCapture (hwnd);
return winMouseButtonsHandle (s_pScreen, ButtonPress, Button2, wParam);
case WM_MBUTTONUP:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
if (s_pScreenInfo->fRootless) ReleaseCapture ();
return winMouseButtonsHandle (s_pScreen, ButtonRelease, Button2, wParam);
case WM_RBUTTONDBLCLK:
case WM_RBUTTONDOWN:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
if (s_pScreenInfo->fRootless) SetCapture (hwnd);
return winMouseButtonsHandle (s_pScreen, ButtonPress, Button3, wParam);
case WM_RBUTTONUP:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
if (s_pScreenInfo->fRootless) ReleaseCapture ();
return winMouseButtonsHandle (s_pScreen, ButtonRelease, Button3, wParam);
case WM_TIMER:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
/* Branch on the timer id */
switch (wParam)
{
case WIN_E3B_TIMER_ID:
/* Send delayed button press */
winMouseButtonsSendEvent (ButtonPress,
s_pScreenPriv->iE3BCachedPress);
/* Kill this timer */
KillTimer (s_pScreenPriv->hwndScreen, WIN_E3B_TIMER_ID);
/* Clear screen privates flags */
s_pScreenPriv->iE3BCachedPress = 0;
break;
case WIN_POLLING_MOUSE_TIMER_ID:
{
POINT point;
/* Get the current position of the mouse cursor */
GetCursorPos (&point);
/* Map from screen (-X, -Y) to root (0, 0) */
point.x -= GetSystemMetrics (SM_XVIRTUALSCREEN);
point.y -= GetSystemMetrics (SM_YVIRTUALSCREEN);
/* Deliver absolute cursor position to X Server */
miPointerAbsoluteCursor (point.x, point.y,
g_c32LastInputEventTime = GetTickCount());
}
}
return 0;
case WM_CTLCOLORSCROLLBAR:
FatalError ("winWindowProc - WM_CTLCOLORSCROLLBAR - We are not "
"supposed to get this message. Exiting.\n");
return 0;
case WM_MOUSEWHEEL:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
#if CYGDEBUG
ErrorF ("winWindowProc - WM_MOUSEWHEEL\n");
#endif
winMouseWheel (s_pScreen, GET_WHEEL_DELTA_WPARAM(wParam));
break;
case WM_SETFOCUS:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
/* Restore the state of all mode keys */
winRestoreModeKeyStates (s_pScreen);
return 0;
case WM_KILLFOCUS:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
/* Store the state of all mode keys */
winStoreModeKeyStates (s_pScreen);
/* Release any pressed keys */
winKeybdReleaseKeys ();
return 0;
#if WIN_NEW_KEYBOARD_SUPPORT
case WM_SYSKEYDOWN:
case WM_KEYDOWN:
case WM_SYSKEYUP:
case WM_KEYUP:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
/* Don't process keys if we are not active */
if (!s_pScreenPriv->fActive)
return 0;
winProcessKeyEvent ((DWORD)wParam, (DWORD) lParam);
return 0;
case WM_DEADCHAR:
case WM_SYSDEADCHAR:
return 0;
#else /* WIN_NEW_KEYBOARD_SUPPORT */
case WM_SYSKEYDOWN:
case WM_KEYDOWN:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
/*
* FIXME: Catching Alt-F4 like this is really terrible. This should
* be generalized to handle other Windows keyboard signals. Actually,
* the list keys to catch and the actions to perform when caught should
* be configurable; that way user's can customize the keys that they
* need to have passed through to their window manager or apps, or they
* can remap certain actions to new key codes that do not conflict
* with the X apps that they are using. Yeah, that'll take awhile.
*/
if ((s_pScreenInfo->fUseWinKillKey && wParam == VK_F4
&& (GetKeyState (VK_MENU) & 0x8000))
|| (s_pScreenInfo->fUseUnixKillKey && wParam == VK_BACK
&& (GetKeyState (VK_MENU) & 0x8000)
&& (GetKeyState (VK_CONTROL) & 0x8000)))
{
/*
* Better leave this message here, just in case some unsuspecting
* user enters Alt + F4 and is surprised when the application
* quits.
*/
ErrorF ("winWindowProc - WM_*KEYDOWN - Closekey hit, quitting\n");
/* Display Exit dialog */
winDisplayExitDialog (s_pScreenPriv);
return 0;
}
/*
* Don't do anything for the Windows keys, as focus will soon
* be returned to Windows. We may be able to trap the Windows keys,
* but we should determine if that is desirable before doing so.
*/
if (wParam == VK_LWIN || wParam == VK_RWIN)
break;
/* Discard fake Ctrl_L presses that precede AltGR on non-US keyboards */
if (winIsFakeCtrl_L (message, wParam, lParam))
return 0;
/* Send the key event(s) */
winTranslateKey (wParam, lParam, &iScanCode);
for (i = 0; i < LOWORD(lParam); ++i)
winSendKeyEvent (iScanCode, TRUE);
return 0;
case WM_SYSKEYUP:
case WM_KEYUP:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
/*
* Don't do anything for the Windows keys, as focus will soon
* be returned to Windows. We may be able to trap the Windows keys,
* but we should determine if that is desirable before doing so.
*/
if (wParam == VK_LWIN || wParam == VK_RWIN)
break;
/* Ignore the fake Ctrl_L that follows an AltGr release */
if (winIsFakeCtrl_L (message, wParam, lParam))
return 0;
/* Enqueue a keyup event */
winTranslateKey (wParam, lParam, &iScanCode);
winSendKeyEvent (iScanCode, FALSE);
return 0;
#endif /* WIN_NEW_KEYBOARD_SUPPORT */
case WM_HOTKEY:
if (s_pScreenPriv == NULL)
break;
/* Call the engine-specific hot key handler */
(*s_pScreenPriv->pwinHotKeyAltTab) (s_pScreen);
return 0;
case WM_ACTIVATE:
if (s_pScreenPriv == NULL
|| s_pScreenInfo->fIgnoreInput)
break;
/* TODO: Override display of window when we have a bad depth */
if (LOWORD(wParam) != WA_INACTIVE && s_pScreenPriv->fBadDepth)
{
ErrorF ("winWindowProc - WM_ACTIVATE - Bad depth, trying "
"to override window activation\n");
/* Minimize the window */
ShowWindow (hwnd, SW_MINIMIZE);
/* Display dialog box */
if (g_hDlgDepthChange != NULL)
{
/* Make the existing dialog box active */
SetActiveWindow (g_hDlgDepthChange);
}
else
{
/* TODO: Recreate the dialog box and bring to the top */
ShowWindow (g_hDlgDepthChange, SW_SHOWDEFAULT);
}
/* Don't do any other processing of this message */
return 0;
}
#if CYGDEBUG
ErrorF ("winWindowProc - WM_ACTIVATE\n");
#endif
/*
* Focus is being changed to another window.
* The other window may or may not belong to
* our process.
*/
/* Clear any lingering wheel delta */
s_pScreenPriv->iDeltaZ = 0;
/* Reshow the Windows mouse cursor if we are being deactivated */
if (LOWORD(wParam) == WA_INACTIVE
&& !g_fCursor)
{
/* Show Windows cursor */
g_fCursor = TRUE;
ShowCursor (TRUE);
}
return 0;
case WM_ACTIVATEAPP:
if (s_pScreenPriv == NULL
|| s_pScreenInfo->fIgnoreInput)
break;
#if CYGDEBUG
ErrorF ("winWindowProc - WM_ACTIVATEAPP\n");
#endif
/* Activate or deactivate */
s_pScreenPriv->fActive = wParam;
/* Reshow the Windows mouse cursor if we are being deactivated */
if (!s_pScreenPriv->fActive
&& !g_fCursor)
{
/* Show Windows cursor */
g_fCursor = TRUE;
ShowCursor (TRUE);
}
/* Call engine specific screen activation/deactivation function */
(*s_pScreenPriv->pwinActivateApp) (s_pScreen);
return 0;
case WM_COMMAND:
switch (LOWORD (wParam))
{
case ID_APP_EXIT:
/* Display Exit dialog */
winDisplayExitDialog (s_pScreenPriv);
return 0;
case ID_APP_HIDE_ROOT:
ShowWindow (s_pScreenPriv->hwndScreen, SW_HIDE);
s_pScreenPriv->fRootWindowShown = FALSE;
return 0;
case ID_APP_SHOW_ROOT:
ShowWindow (s_pScreenPriv->hwndScreen, SW_SHOW);
s_pScreenPriv->fRootWindowShown = TRUE;
return 0;
default:
/* It's probably one of the custom menus... */
return HandleCustomWM_COMMAND (0, LOWORD (wParam));
}
break;
case WM_GIVEUP:
/* Tell X that we are giving up */
winDeinitClipboard ();
winDeinitMultiWindowWM ();
GiveUp (0);
return 0;
case WM_CLOSE:
/* Display Exit dialog */
winDisplayExitDialog (s_pScreenPriv);
return 0;
}
return DefWindowProc (hwnd, message, wParam, lParam);
}
int
winMouseButtonsHandle (ScreenPtr pScreen,
int iEventType, int iButton,
WPARAM wParam)
{
winScreenPriv(pScreen);
winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
/* Send button events right away if emulate 3 buttons is off */
if (pScreenInfo->iE3BTimeout == WIN_E3B_OFF)
{
/* Emulate 3 buttons is off, send the button event */
winMouseButtonsSendEvent (iEventType, iButton);
return 0;
}
/* Emulate 3 buttons is on, let the fun begin */
if (iEventType == ButtonPress
&& pScreenPriv->iE3BCachedPress == 0
&& !pScreenPriv->fE3BFakeButton2Sent)
{
/*
* Button was pressed, no press is cached,
* and there is no fake button 2 release pending.
*/
/* Store button press type */
pScreenPriv->iE3BCachedPress = iButton;
/*
* Set a timer to send this button press if the other button
* is not pressed within the timeout time.
*/
SetTimer (pScreenPriv->hwndScreen,
WIN_E3B_TIMER_ID,
pScreenInfo->iE3BTimeout,
NULL);
}
else if (iEventType == ButtonPress
&& pScreenPriv->iE3BCachedPress != 0
&& pScreenPriv->iE3BCachedPress != iButton
&& !pScreenPriv->fE3BFakeButton2Sent)
{
/*
* Button press is cached, other button was pressed,
* and there is no fake button 2 release pending.
*/
/* Mouse button was cached and other button was pressed */
KillTimer (pScreenPriv->hwndScreen, WIN_E3B_TIMER_ID);
pScreenPriv->iE3BCachedPress = 0;
/* Send fake middle button */
winMouseButtonsSendEvent (ButtonPress, Button2);
/* Indicate that a fake middle button event was sent */
pScreenPriv->fE3BFakeButton2Sent = TRUE;
}
else if (iEventType == ButtonRelease
&& pScreenPriv->iE3BCachedPress == iButton)
{
/*
* Cached button was released before timer ran out,
* and before the other mouse button was pressed.
*/
KillTimer (pScreenPriv->hwndScreen, WIN_E3B_TIMER_ID);
pScreenPriv->iE3BCachedPress = 0;
/* Send cached press, then send release */
winMouseButtonsSendEvent (ButtonPress, iButton);
winMouseButtonsSendEvent (ButtonRelease, iButton);
}
else if (iEventType == ButtonRelease
&& pScreenPriv->fE3BFakeButton2Sent
&& !(wParam & MK_LBUTTON)
&& !(wParam & MK_RBUTTON))
{
/*
* Fake button 2 was sent and both mouse buttons have now been released
*/
pScreenPriv->fE3BFakeButton2Sent = FALSE;
/* Send middle mouse button release */
winMouseButtonsSendEvent (ButtonRelease, Button2);
}
else if (iEventType == ButtonRelease
&& pScreenPriv->iE3BCachedPress == 0
&& !pScreenPriv->fE3BFakeButton2Sent)
{
/*
* Button was release, no button is cached,
* and there is no fake button 2 release is pending.
*/
winMouseButtonsSendEvent (ButtonRelease, iButton);
}
return 0;
}
LRESULT CALLBACK
winWindowProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static winPrivScreenPtr s_pScreenPriv = NULL;
static winScreenInfo *s_pScreenInfo = NULL;
static ScreenPtr s_pScreen = NULL;
static HWND s_hwndLastPrivates = NULL;
static HINSTANCE s_hInstance;
static Bool s_fTracking = FALSE;
static unsigned long s_ulServerGeneration = 0;
static UINT s_uTaskbarRestart = 0;
int iScanCode;
int i;
#if CYGDEBUG
winDebugWin32Message("winWindowProc", hwnd, message, wParam, lParam);
#endif
/* Watch for server regeneration */
if (g_ulServerGeneration != s_ulServerGeneration) {
/* Store new server generation */
s_ulServerGeneration = g_ulServerGeneration;
}
/* Only retrieve new privates pointers if window handle is null or changed */
if ((s_pScreenPriv == NULL || hwnd != s_hwndLastPrivates)
&& (s_pScreenPriv = GetProp(hwnd, WIN_SCR_PROP)) != NULL) {
#if CYGDEBUG
winDebug("winWindowProc - Setting privates handle\n");
#endif
s_pScreenInfo = s_pScreenPriv->pScreenInfo;
s_pScreen = s_pScreenInfo->pScreen;
s_hwndLastPrivates = hwnd;
}
else if (s_pScreenPriv == NULL) {
/* For safety, handle case that should never happen */
s_pScreenInfo = NULL;
s_pScreen = NULL;
s_hwndLastPrivates = NULL;
}
/* Branch on message type */
switch (message) {
case WM_TRAYICON:
return winHandleIconMessage(hwnd, message, wParam, lParam,
s_pScreenPriv);
case WM_CREATE:
#if CYGDEBUG
winDebug("winWindowProc - WM_CREATE\n");
#endif
/*
* Add a property to our display window that references
* this screens' privates.
*
* This allows the window procedure to refer to the
* appropriate window DC and shadow DC for the window that
* it is processing. We use this to repaint exposed
* areas of our display window.
*/
s_pScreenPriv = ((LPCREATESTRUCT) lParam)->lpCreateParams;
s_hInstance = ((LPCREATESTRUCT) lParam)->hInstance;
s_pScreenInfo = s_pScreenPriv->pScreenInfo;
s_pScreen = s_pScreenInfo->pScreen;
s_hwndLastPrivates = hwnd;
s_uTaskbarRestart = RegisterWindowMessage(TEXT("TaskbarCreated"));
SetProp(hwnd, WIN_SCR_PROP, s_pScreenPriv);
/* Setup tray icon */
if (!s_pScreenInfo->fNoTrayIcon) {
/*
* NOTE: The WM_CREATE message is processed before CreateWindowEx
* returns, so s_pScreenPriv->hwndScreen is invalid at this point.
* We go ahead and copy our hwnd parameter over top of the screen
* privates hwndScreen so that we have a valid value for
* that member. Otherwise, the tray icon will disappear
* the first time you move the mouse over top of it.
*/
s_pScreenPriv->hwndScreen = hwnd;
winInitNotifyIcon(s_pScreenPriv);
}
return 0;
case WM_DISPLAYCHANGE:
/*
WM_DISPLAYCHANGE seems to be sent when the monitor layout or
any monitor's resolution or depth changes, but it's lParam and
wParam always indicate the resolution and bpp for the primary
monitor (so ignore that as we could be on any monitor...)
*/
/* We cannot handle a display mode change during initialization */
if (s_pScreenInfo == NULL)
FatalError("winWindowProc - WM_DISPLAYCHANGE - The display "
"mode changed while we were intializing. This is "
"very bad and unexpected. Exiting.\n");
/*
* We do not care about display changes with
* fullscreen DirectDraw engines, because those engines set
* their own mode when they become active.
*/
if (s_pScreenInfo->fFullScreen
&& (s_pScreenInfo->dwEngine == WIN_SERVER_SHADOW_DD
|| s_pScreenInfo->dwEngine == WIN_SERVER_SHADOW_DDNL
#ifdef XWIN_PRIMARYFB
|| s_pScreenInfo->dwEngine == WIN_SERVER_PRIMARY_DD
#endif
)) {
break;
}
ErrorF("winWindowProc - WM_DISPLAYCHANGE - new width: %d "
"new height: %d new bpp: %d\n",
LOWORD(lParam), HIWORD(lParam), wParam);
/* 0 bpp has no defined meaning, ignore this message */
if (wParam == 0)
break;
/*
* Check for a disruptive change in depth.
* We can only display a message for a disruptive depth change,
* we cannot do anything to correct the situation.
*/
/*
XXX: maybe we need to check if GetSystemMetrics(SM_SAMEDISPLAYFORMAT)
has changed as well...
*/
if (s_pScreenInfo->dwBPP !=
GetDeviceCaps(s_pScreenPriv->hdcScreen, BITSPIXEL)) {
if ((s_pScreenInfo->dwEngine == WIN_SERVER_SHADOW_DD ||
s_pScreenInfo->dwEngine == WIN_SERVER_SHADOW_DDNL
#ifdef XWIN_PRIMARYFB
|| s_pScreenInfo->dwEngine == WIN_SERVER_PRIMARY_DD
#endif
)) {
/* Cannot display the visual until the depth is restored */
ErrorF("winWindowProc - Disruptive change in depth\n");
/* Display depth change dialog */
winDisplayDepthChangeDialog(s_pScreenPriv);
/* Flag that we have an invalid screen depth */
s_pScreenPriv->fBadDepth = TRUE;
/* Minimize the display window */
ShowWindow(hwnd, SW_MINIMIZE);
}
else {
/* For GDI, performance may suffer until original depth is restored */
ErrorF
("winWindowProc - Performance may be non-optimal after change in depth\n");
}
}
else {
/* Flag that we have a valid screen depth */
s_pScreenPriv->fBadDepth = FALSE;
}
/*
If we could cheaply check if this WM_DISPLAYCHANGE change
affects the monitor(s) which this X screen is displayed on
then we should do so here. For the moment, assume it does.
(this is probably usually the case so that might be an
overoptimization)
*/
{
/*
In rootless modes which are monitor or virtual desktop size
use RandR to resize the X screen
*/
if ((!s_pScreenInfo->fUserGaveHeightAndWidth) &&
(s_pScreenInfo->iResizeMode == resizeWithRandr) && (FALSE
#ifdef XWIN_MULTIWINDOWEXTWM
||
s_pScreenInfo->
fMWExtWM
#endif
||
s_pScreenInfo->
fRootless
#ifdef XWIN_MULTIWINDOW
||
s_pScreenInfo->
fMultiWindow
#endif
)) {
DWORD dwWidth, dwHeight;
if (s_pScreenInfo->fMultipleMonitors) {
/* resize to new virtual desktop size */
dwWidth = GetSystemMetrics(SM_CXVIRTUALSCREEN);
dwHeight = GetSystemMetrics(SM_CYVIRTUALSCREEN);
}
else {
/* resize to new size of specified monitor */
struct GetMonitorInfoData data;
if (QueryMonitor(s_pScreenInfo->iMonitor, &data)) {
if (data.bMonitorSpecifiedExists == TRUE) {
dwWidth = data.monitorWidth;
dwHeight = data.monitorHeight;
/*
XXX: monitor may have changed position,
so we might need to update xinerama data
*/
}
else {
ErrorF("Monitor number %d no longer exists!\n",
s_pScreenInfo->iMonitor);
}
}
}
/*
XXX: probably a small bug here: we don't compute the work area
and allow for task bar
XXX: generally, we don't allow for the task bar being moved after
the server is started
*/
/* Set screen size to match new size, if it is different to current */
if ((s_pScreenInfo->dwWidth != dwWidth) ||
(s_pScreenInfo->dwHeight != dwHeight)) {
winDoRandRScreenSetSize(s_pScreen,
dwWidth,
dwHeight,
(dwWidth * 25.4) /
monitorResolution,
(dwHeight * 25.4) /
monitorResolution);
}
}
else {
/*
* We can simply recreate the same-sized primary surface when
* the display dimensions change.
*/
/*
* NOTE: The non-DirectDraw engines set the ReleasePrimarySurface
* and CreatePrimarySurface function pointers to point
* to the no operation function, NoopDDA. This allows us
* to blindly call these functions, even if they are not
* relevant to the current engine (e.g., Shadow GDI).
*/
winDebug
("winWindowProc - WM_DISPLAYCHANGE - Releasing and recreating primary surface\n");
/* Release the old primary surface */
(*s_pScreenPriv->pwinReleasePrimarySurface) (s_pScreen);
/* Create the new primary surface */
(*s_pScreenPriv->pwinCreatePrimarySurface) (s_pScreen);
}
}
break;
case WM_SIZE:
{
SCROLLINFO si;
RECT rcWindow;
int iWidth, iHeight;
#if CYGDEBUG
winDebug("winWindowProc - WM_SIZE\n");
#endif
/* Break if we do not allow resizing */
if ((s_pScreenInfo->iResizeMode == notAllowed)
|| !s_pScreenInfo->fDecoration
#ifdef XWIN_MULTIWINDOWEXTWM
|| s_pScreenInfo->fMWExtWM
#endif
|| s_pScreenInfo->fRootless
#ifdef XWIN_MULTIWINDOW
|| s_pScreenInfo->fMultiWindow
#endif
|| s_pScreenInfo->fFullScreen)
break;
/* No need to resize if we get minimized */
if (wParam == SIZE_MINIMIZED)
return 0;
ErrorF("winWindowProc - WM_SIZE - new client area w: %d h: %d\n",
LOWORD(lParam), HIWORD(lParam));
if (s_pScreenInfo->iResizeMode == resizeWithRandr) {
/* Actual resizing is done on WM_EXITSIZEMOVE */
return 0;
}
/* Otherwise iResizeMode == resizeWithScrollbars */
/*
* Get the size of the whole window, including client area,
* scrollbars, and non-client area decorations (caption, borders).
* We do this because we need to check if the client area
* without scrollbars is large enough to display the whole visual.
* The new client area size passed by lParam already subtracts
* the size of the scrollbars if they are currently displayed.
* So checking is LOWORD(lParam) == visual_width and
* HIWORD(lParam) == visual_height will never tell us to hide
* the scrollbars because the client area would always be too small.
* GetClientRect returns the same sizes given by lParam, so we
* cannot use GetClientRect either.
*/
GetWindowRect(hwnd, &rcWindow);
iWidth = rcWindow.right - rcWindow.left;
iHeight = rcWindow.bottom - rcWindow.top;
/* Subtract the frame size from the window size. */
iWidth -= 2 * GetSystemMetrics(SM_CXSIZEFRAME);
iHeight -= (2 * GetSystemMetrics(SM_CYSIZEFRAME)
+ GetSystemMetrics(SM_CYCAPTION));
/*
* Update scrollbar page sizes.
* NOTE: If page size == range, then the scrollbar is
* automatically hidden.
*/
/* Is the naked client area large enough to show the whole visual? */
if (iWidth < s_pScreenInfo->dwWidth
|| iHeight < s_pScreenInfo->dwHeight) {
/* Client area too small to display visual, use scrollbars */
iWidth -= GetSystemMetrics(SM_CXVSCROLL);
iHeight -= GetSystemMetrics(SM_CYHSCROLL);
}
/* Set the horizontal scrollbar page size */
si.cbSize = sizeof(si);
si.fMask = SIF_PAGE | SIF_RANGE;
si.nMin = 0;
si.nMax = s_pScreenInfo->dwWidth - 1;
si.nPage = iWidth;
SetScrollInfo(hwnd, SB_HORZ, &si, TRUE);
/* Set the vertical scrollbar page size */
si.cbSize = sizeof(si);
si.fMask = SIF_PAGE | SIF_RANGE;
si.nMin = 0;
si.nMax = s_pScreenInfo->dwHeight - 1;
si.nPage = iHeight;
SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
/*
* NOTE: Scrollbars may have moved if they were at the
* far right/bottom, so we query their current position.
*/
/* Get the horizontal scrollbar position and set the offset */
si.cbSize = sizeof(si);
si.fMask = SIF_POS;
GetScrollInfo(hwnd, SB_HORZ, &si);
s_pScreenInfo->dwXOffset = -si.nPos;
/* Get the vertical scrollbar position and set the offset */
si.cbSize = sizeof(si);
si.fMask = SIF_POS;
GetScrollInfo(hwnd, SB_VERT, &si);
s_pScreenInfo->dwYOffset = -si.nPos;
}
return 0;
case WM_SYSCOMMAND:
if (s_pScreenInfo->iResizeMode == resizeWithRandr &&
((wParam & 0xfff0) == SC_MAXIMIZE ||
(wParam & 0xfff0) == SC_RESTORE))
PostMessage(hwnd, WM_EXITSIZEMOVE, 0, 0);
break;
case WM_ENTERSIZEMOVE:
ErrorF("winWindowProc - WM_ENTERSIZEMOVE\n");
break;
case WM_EXITSIZEMOVE:
ErrorF("winWindowProc - WM_EXITSIZEMOVE\n");
if (s_pScreenInfo->iResizeMode == resizeWithRandr) {
/* Set screen size to match new client area, if it is different to current */
RECT rcClient;
DWORD dwWidth, dwHeight;
GetClientRect(hwnd, &rcClient);
dwWidth = rcClient.right - rcClient.left;
dwHeight = rcClient.bottom - rcClient.top;
if ((s_pScreenInfo->dwWidth != dwWidth) ||
(s_pScreenInfo->dwHeight != dwHeight)) {
/* mm = dots * (25.4 mm / inch) / (dots / inch) */
winDoRandRScreenSetSize(s_pScreen,
dwWidth,
dwHeight,
(dwWidth * 25.4) / monitorResolution,
(dwHeight * 25.4) / monitorResolution);
}
}
break;
case WM_VSCROLL:
{
SCROLLINFO si;
int iVertPos;
#if CYGDEBUG
winDebug("winWindowProc - WM_VSCROLL\n");
#endif
/* Get vertical scroll bar info */
si.cbSize = sizeof(si);
si.fMask = SIF_ALL;
GetScrollInfo(hwnd, SB_VERT, &si);
/* Save the vertical position for comparison later */
iVertPos = si.nPos;
/*
* Don't forget:
* moving the scrollbar to the DOWN, scroll the content UP
*/
switch (LOWORD(wParam)) {
case SB_TOP:
si.nPos = si.nMin;
break;
case SB_BOTTOM:
si.nPos = si.nMax - si.nPage + 1;
break;
case SB_LINEUP:
si.nPos -= 1;
break;
case SB_LINEDOWN:
si.nPos += 1;
break;
case SB_PAGEUP:
si.nPos -= si.nPage;
break;
case SB_PAGEDOWN:
si.nPos += si.nPage;
break;
case SB_THUMBTRACK:
si.nPos = si.nTrackPos;
break;
default:
break;
}
/*
* We retrieve the position after setting it,
* because Windows may adjust it.
*/
si.fMask = SIF_POS;
SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
GetScrollInfo(hwnd, SB_VERT, &si);
/* Scroll the window if the position has changed */
if (si.nPos != iVertPos) {
/* Save the new offset for bit block transfers, etc. */
s_pScreenInfo->dwYOffset = -si.nPos;
/* Change displayed region in the window */
ScrollWindowEx(hwnd,
0,
iVertPos - si.nPos,
NULL, NULL, NULL, NULL, SW_INVALIDATE);
/* Redraw the window contents */
UpdateWindow(hwnd);
}
}
return 0;
case WM_HSCROLL:
{
SCROLLINFO si;
int iHorzPos;
#if CYGDEBUG
winDebug("winWindowProc - WM_HSCROLL\n");
#endif
/* Get horizontal scroll bar info */
si.cbSize = sizeof(si);
si.fMask = SIF_ALL;
GetScrollInfo(hwnd, SB_HORZ, &si);
/* Save the horizontal position for comparison later */
iHorzPos = si.nPos;
/*
* Don't forget:
* moving the scrollbar to the RIGHT, scroll the content LEFT
*/
switch (LOWORD(wParam)) {
case SB_LEFT:
si.nPos = si.nMin;
break;
case SB_RIGHT:
si.nPos = si.nMax - si.nPage + 1;
break;
case SB_LINELEFT:
si.nPos -= 1;
break;
case SB_LINERIGHT:
si.nPos += 1;
break;
case SB_PAGELEFT:
si.nPos -= si.nPage;
break;
case SB_PAGERIGHT:
si.nPos += si.nPage;
break;
case SB_THUMBTRACK:
si.nPos = si.nTrackPos;
break;
default:
break;
}
/*
* We retrieve the position after setting it,
* because Windows may adjust it.
*/
si.fMask = SIF_POS;
SetScrollInfo(hwnd, SB_HORZ, &si, TRUE);
GetScrollInfo(hwnd, SB_HORZ, &si);
/* Scroll the window if the position has changed */
if (si.nPos != iHorzPos) {
/* Save the new offset for bit block transfers, etc. */
s_pScreenInfo->dwXOffset = -si.nPos;
/* Change displayed region in the window */
ScrollWindowEx(hwnd,
iHorzPos - si.nPos,
0, NULL, NULL, NULL, NULL, SW_INVALIDATE);
/* Redraw the window contents */
UpdateWindow(hwnd);
}
}
return 0;
case WM_GETMINMAXINFO:
{
MINMAXINFO *pMinMaxInfo = (MINMAXINFO *) lParam;
int iCaptionHeight;
int iBorderHeight, iBorderWidth;
#if CYGDEBUG
winDebug("winWindowProc - WM_GETMINMAXINFO - pScreenInfo: %08x\n",
s_pScreenInfo);
#endif
/* Can't do anything without screen info */
if (s_pScreenInfo == NULL
|| (s_pScreenInfo->iResizeMode != resizeWithScrollbars)
|| s_pScreenInfo->fFullScreen || !s_pScreenInfo->fDecoration
#ifdef XWIN_MULTIWINDOWEXTWM
|| s_pScreenInfo->fMWExtWM
#endif
|| s_pScreenInfo->fRootless
#ifdef XWIN_MULTIWINDOW
|| s_pScreenInfo->fMultiWindow
#endif
)
break;
/*
* Here we can override the maximum tracking size, which
* is the largest size that can be assigned to our window
* via the sizing border.
*/
/*
* FIXME: Do we only need to do this once, since our visual size
* does not change? Does Windows store this value statically
* once we have set it once?
*/
/* Get the border and caption sizes */
iCaptionHeight = GetSystemMetrics(SM_CYCAPTION);
iBorderWidth = 2 * GetSystemMetrics(SM_CXSIZEFRAME);
iBorderHeight = 2 * GetSystemMetrics(SM_CYSIZEFRAME);
/* Allow the full visual to be displayed */
pMinMaxInfo->ptMaxTrackSize.x = s_pScreenInfo->dwWidth + iBorderWidth;
pMinMaxInfo->ptMaxTrackSize.y
= s_pScreenInfo->dwHeight + iBorderHeight + iCaptionHeight;
}
return 0;
case WM_ERASEBKGND:
#if CYGDEBUG
winDebug("winWindowProc - WM_ERASEBKGND\n");
#endif
/*
* Pretend that we did erase the background but we don't care,
* the application uses the full window estate. This avoids some
* flickering when resizing.
*/
return TRUE;
case WM_PAINT:
#if CYGDEBUG
winDebug("winWindowProc - WM_PAINT\n");
#endif
/* Only paint if we have privates and the server is enabled */
if (s_pScreenPriv == NULL
|| !s_pScreenPriv->fEnabled
|| (s_pScreenInfo->fFullScreen && !s_pScreenPriv->fActive)
|| s_pScreenPriv->fBadDepth) {
/* We don't want to paint */
break;
}
/* Break out here if we don't have a valid paint routine */
if (s_pScreenPriv->pwinBltExposedRegions == NULL)
break;
/* Call the engine dependent repainter */
(*s_pScreenPriv->pwinBltExposedRegions) (s_pScreen);
return 0;
case WM_PALETTECHANGED:
{
#if CYGDEBUG
winDebug("winWindowProc - WM_PALETTECHANGED\n");
#endif
/*
* Don't process if we don't have privates or a colormap,
* or if we have an invalid depth.
*/
if (s_pScreenPriv == NULL
|| s_pScreenPriv->pcmapInstalled == NULL
|| s_pScreenPriv->fBadDepth)
break;
/* Return if we caused the palette to change */
if ((HWND) wParam == hwnd) {
/* Redraw the screen */
(*s_pScreenPriv->pwinRedrawScreen) (s_pScreen);
return 0;
}
/* Reinstall the windows palette */
(*s_pScreenPriv->pwinRealizeInstalledPalette) (s_pScreen);
/* Redraw the screen */
(*s_pScreenPriv->pwinRedrawScreen) (s_pScreen);
return 0;
}
case WM_MOUSEMOVE:
/* We can't do anything without privates */
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
/* We can't do anything without g_pwinPointer */
if (g_pwinPointer == NULL)
break;
/* Has the mouse pointer crossed screens? */
if (s_pScreen != miPointerGetScreen(g_pwinPointer))
miPointerSetScreen(g_pwinPointer, s_pScreenInfo->dwScreen,
GET_X_LPARAM(lParam) - s_pScreenInfo->dwXOffset,
GET_Y_LPARAM(lParam) - s_pScreenInfo->dwYOffset);
/* Are we tracking yet? */
if (!s_fTracking) {
TRACKMOUSEEVENT tme;
/* Setup data structure */
ZeroMemory(&tme, sizeof(tme));
tme.cbSize = sizeof(tme);
tme.dwFlags = TME_LEAVE;
tme.hwndTrack = hwnd;
/* Call the tracking function */
if (!TrackMouseEvent(&tme))
ErrorF("winWindowProc - TrackMouseEvent failed\n");
/* Flag that we are tracking now */
s_fTracking = TRUE;
}
/* Hide or show the Windows mouse cursor */
if (g_fSoftwareCursor && g_fCursor &&
(s_pScreenPriv->fActive || s_pScreenInfo->fLessPointer)) {
/* Hide Windows cursor */
g_fCursor = FALSE;
ShowCursor(FALSE);
}
else if (g_fSoftwareCursor && !g_fCursor && !s_pScreenPriv->fActive
&& !s_pScreenInfo->fLessPointer) {
/* Show Windows cursor */
g_fCursor = TRUE;
ShowCursor(TRUE);
}
/* Deliver absolute cursor position to X Server */
winEnqueueMotion(GET_X_LPARAM(lParam) - s_pScreenInfo->dwXOffset,
GET_Y_LPARAM(lParam) - s_pScreenInfo->dwYOffset);
return 0;
case WM_NCMOUSEMOVE:
/*
* We break instead of returning 0 since we need to call
* DefWindowProc to get the mouse cursor changes
* and min/max/close button highlighting in Windows XP.
* The Platform SDK says that you should return 0 if you
* process this message, but it fails to mention that you
* will give up any default functionality if you do return 0.
*/
/* We can't do anything without privates */
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
/* Non-client mouse movement, show Windows cursor */
if (g_fSoftwareCursor && !g_fCursor) {
g_fCursor = TRUE;
ShowCursor(TRUE);
}
break;
case WM_MOUSELEAVE:
/* Mouse has left our client area */
/* Flag that we are no longer tracking */
s_fTracking = FALSE;
/* Show the mouse cursor, if necessary */
if (g_fSoftwareCursor && !g_fCursor) {
g_fCursor = TRUE;
ShowCursor(TRUE);
}
return 0;
case WM_LBUTTONDBLCLK:
case WM_LBUTTONDOWN:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
if (s_pScreenInfo->fRootless
#ifdef XWIN_MULTIWINDOWEXTWM
|| s_pScreenInfo->fMWExtWM
#endif
)
SetCapture(hwnd);
return winMouseButtonsHandle(s_pScreen, ButtonPress, Button1, wParam);
case WM_LBUTTONUP:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
if (s_pScreenInfo->fRootless
#ifdef XWIN_MULTIWINDOWEXTWM
|| s_pScreenInfo->fMWExtWM
#endif
)
ReleaseCapture();
return winMouseButtonsHandle(s_pScreen, ButtonRelease, Button1, wParam);
case WM_MBUTTONDBLCLK:
case WM_MBUTTONDOWN:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
if (s_pScreenInfo->fRootless
#ifdef XWIN_MULTIWINDOWEXTWM
|| s_pScreenInfo->fMWExtWM
#endif
)
SetCapture(hwnd);
return winMouseButtonsHandle(s_pScreen, ButtonPress, Button2, wParam);
case WM_MBUTTONUP:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
if (s_pScreenInfo->fRootless
#ifdef XWIN_MULTIWINDOWEXTWM
|| s_pScreenInfo->fMWExtWM
#endif
)
ReleaseCapture();
return winMouseButtonsHandle(s_pScreen, ButtonRelease, Button2, wParam);
case WM_RBUTTONDBLCLK:
case WM_RBUTTONDOWN:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
if (s_pScreenInfo->fRootless
#ifdef XWIN_MULTIWINDOWEXTWM
|| s_pScreenInfo->fMWExtWM
#endif
)
SetCapture(hwnd);
return winMouseButtonsHandle(s_pScreen, ButtonPress, Button3, wParam);
case WM_RBUTTONUP:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
if (s_pScreenInfo->fRootless
#ifdef XWIN_MULTIWINDOWEXTWM
|| s_pScreenInfo->fMWExtWM
#endif
)
ReleaseCapture();
return winMouseButtonsHandle(s_pScreen, ButtonRelease, Button3, wParam);
case WM_XBUTTONDBLCLK:
case WM_XBUTTONDOWN:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
if (s_pScreenInfo->fRootless
#ifdef XWIN_MULTIWINDOWEXTWM
|| s_pScreenInfo->fMWExtWM
#endif
)
SetCapture(hwnd);
return winMouseButtonsHandle(s_pScreen, ButtonPress, HIWORD(wParam) + 5,
wParam);
case WM_XBUTTONUP:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
if (s_pScreenInfo->fRootless
#ifdef XWIN_MULTIWINDOWEXTWM
|| s_pScreenInfo->fMWExtWM
#endif
)
ReleaseCapture();
return winMouseButtonsHandle(s_pScreen, ButtonRelease,
HIWORD(wParam) + 5, wParam);
case WM_TIMER:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
/* Branch on the timer id */
switch (wParam) {
case WIN_E3B_TIMER_ID:
/* Send delayed button press */
winMouseButtonsSendEvent(ButtonPress,
s_pScreenPriv->iE3BCachedPress);
/* Kill this timer */
KillTimer(s_pScreenPriv->hwndScreen, WIN_E3B_TIMER_ID);
/* Clear screen privates flags */
s_pScreenPriv->iE3BCachedPress = 0;
break;
case WIN_POLLING_MOUSE_TIMER_ID:
{
POINT point;
WPARAM wL, wM, wR, wShift, wCtrl;
LPARAM lPos;
/* Get the current position of the mouse cursor */
GetCursorPos(&point);
/* Map from screen (-X, -Y) to root (0, 0) */
point.x -= GetSystemMetrics(SM_XVIRTUALSCREEN);
point.y -= GetSystemMetrics(SM_YVIRTUALSCREEN);
/* Deliver absolute cursor position to X Server */
winEnqueueMotion(point.x, point.y);
/* Check if a button was released but we didn't see it */
GetCursorPos(&point);
wL = (GetKeyState(VK_LBUTTON) & 0x8000) ? MK_LBUTTON : 0;
wM = (GetKeyState(VK_MBUTTON) & 0x8000) ? MK_MBUTTON : 0;
wR = (GetKeyState(VK_RBUTTON) & 0x8000) ? MK_RBUTTON : 0;
wShift = (GetKeyState(VK_SHIFT) & 0x8000) ? MK_SHIFT : 0;
wCtrl = (GetKeyState(VK_CONTROL) & 0x8000) ? MK_CONTROL : 0;
lPos = MAKELPARAM(point.x, point.y);
if (g_fButton[0] & !wL)
PostMessage(hwnd, WM_LBUTTONUP, wCtrl | wM | wR | wShift, lPos);
if (g_fButton[1] & !wM)
PostMessage(hwnd, WM_MBUTTONUP, wCtrl | wL | wR | wShift, lPos);
if (g_fButton[2] & !wR)
PostMessage(hwnd, WM_RBUTTONUP, wCtrl | wL | wM | wShift, lPos);
}
}
return 0;
case WM_CTLCOLORSCROLLBAR:
FatalError("winWindowProc - WM_CTLCOLORSCROLLBAR - We are not "
"supposed to get this message. Exiting.\n");
return 0;
case WM_MOUSEWHEEL:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
#if CYGDEBUG
winDebug("winWindowProc - WM_MOUSEWHEEL\n");
#endif
winMouseWheel(s_pScreen, GET_WHEEL_DELTA_WPARAM(wParam));
break;
case WM_SETFOCUS:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
/* Restore the state of all mode keys */
winRestoreModeKeyStates();
/* Add the keyboard hook if possible */
if (g_fKeyboardHookLL)
g_fKeyboardHookLL = winInstallKeyboardHookLL();
return 0;
case WM_KILLFOCUS:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
/* Release any pressed keys */
winKeybdReleaseKeys();
/* Remove our keyboard hook if it is installed */
winRemoveKeyboardHookLL();
return 0;
case WM_SYSKEYDOWN:
case WM_KEYDOWN:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
/*
* FIXME: Catching Alt-F4 like this is really terrible. This should
* be generalized to handle other Windows keyboard signals. Actually,
* the list keys to catch and the actions to perform when caught should
* be configurable; that way user's can customize the keys that they
* need to have passed through to their window manager or apps, or they
* can remap certain actions to new key codes that do not conflict
* with the X apps that they are using. Yeah, that'll take awhile.
*/
if ((s_pScreenInfo->fUseWinKillKey && wParam == VK_F4
&& (GetKeyState(VK_MENU) & 0x8000))
|| (s_pScreenInfo->fUseUnixKillKey && wParam == VK_BACK
&& (GetKeyState(VK_MENU) & 0x8000)
&& (GetKeyState(VK_CONTROL) & 0x8000))) {
/*
* Better leave this message here, just in case some unsuspecting
* user enters Alt + F4 and is surprised when the application
* quits.
*/
ErrorF("winWindowProc - WM_*KEYDOWN - Closekey hit, quitting\n");
/* Display Exit dialog */
winDisplayExitDialog(s_pScreenPriv);
return 0;
}
/*
* Don't do anything for the Windows keys, as focus will soon
* be returned to Windows. We may be able to trap the Windows keys,
* but we should determine if that is desirable before doing so.
*/
if ((wParam == VK_LWIN || wParam == VK_RWIN) && !g_fKeyboardHookLL)
break;
/* Discard fake Ctrl_L events that precede AltGR on non-US keyboards */
if (winIsFakeCtrl_L(message, wParam, lParam))
return 0;
/*
* Discard presses generated from Windows auto-repeat
*/
if (lParam & (1 << 30)) {
switch (wParam) {
/* ago: Pressing LControl while RControl is pressed is
* Indicated as repeat. Fix this!
*/
case VK_CONTROL:
case VK_SHIFT:
if (winCheckKeyPressed(wParam, lParam))
return 0;
break;
default:
return 0;
}
}
/* Translate Windows key code to X scan code */
winTranslateKey(wParam, lParam, &iScanCode);
/* Ignore repeats for CapsLock */
if (wParam == VK_CAPITAL)
lParam = 1;
/* Send the key event(s) */
for (i = 0; i < LOWORD(lParam); ++i)
winSendKeyEvent(iScanCode, TRUE);
return 0;
case WM_SYSKEYUP:
case WM_KEYUP:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
/*
* Don't do anything for the Windows keys, as focus will soon
* be returned to Windows. We may be able to trap the Windows keys,
* but we should determine if that is desirable before doing so.
*/
if ((wParam == VK_LWIN || wParam == VK_RWIN) && !g_fKeyboardHookLL)
break;
/* Ignore the fake Ctrl_L that follows an AltGr release */
if (winIsFakeCtrl_L(message, wParam, lParam))
return 0;
/* Enqueue a keyup event */
winTranslateKey(wParam, lParam, &iScanCode);
winSendKeyEvent(iScanCode, FALSE);
/* Release all pressed shift keys */
if (wParam == VK_SHIFT)
winFixShiftKeys(iScanCode);
return 0;
case WM_HOTKEY:
if (s_pScreenPriv == NULL)
break;
/* Call the engine-specific hot key handler */
(*s_pScreenPriv->pwinHotKeyAltTab) (s_pScreen);
return 0;
case WM_ACTIVATE:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
/* TODO: Override display of window when we have a bad depth */
if (LOWORD(wParam) != WA_INACTIVE && s_pScreenPriv->fBadDepth) {
ErrorF("winWindowProc - WM_ACTIVATE - Bad depth, trying "
"to override window activation\n");
/* Minimize the window */
ShowWindow(hwnd, SW_MINIMIZE);
/* Display dialog box */
if (g_hDlgDepthChange != NULL) {
/* Make the existing dialog box active */
SetActiveWindow(g_hDlgDepthChange);
}
else {
/* TODO: Recreate the dialog box and bring to the top */
ShowWindow(g_hDlgDepthChange, SW_SHOWDEFAULT);
}
/* Don't do any other processing of this message */
return 0;
}
#if CYGDEBUG
winDebug("winWindowProc - WM_ACTIVATE\n");
#endif
/*
* Focus is being changed to another window.
* The other window may or may not belong to
* our process.
*/
/* Clear any lingering wheel delta */
s_pScreenPriv->iDeltaZ = 0;
/* Reshow the Windows mouse cursor if we are being deactivated */
if (g_fSoftwareCursor && LOWORD(wParam) == WA_INACTIVE && !g_fCursor) {
/* Show Windows cursor */
g_fCursor = TRUE;
ShowCursor(TRUE);
}
return 0;
case WM_ACTIVATEAPP:
if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
break;
#if CYGDEBUG || TRUE
winDebug("winWindowProc - WM_ACTIVATEAPP\n");
#endif
/* Activate or deactivate */
s_pScreenPriv->fActive = wParam;
/* Reshow the Windows mouse cursor if we are being deactivated */
if (g_fSoftwareCursor && !s_pScreenPriv->fActive && !g_fCursor) {
/* Show Windows cursor */
g_fCursor = TRUE;
ShowCursor(TRUE);
}
#ifdef XWIN_CLIPBOARD
/* Make sure the clipboard chain is ok. */
winFixClipboardChain();
#endif
/* Call engine specific screen activation/deactivation function */
(*s_pScreenPriv->pwinActivateApp) (s_pScreen);
#ifdef XWIN_MULTIWINDOWEXTWM
if (s_pScreenPriv->fActive) {
/* Restack all window unless using built-in wm. */
if (s_pScreenInfo->fInternalWM && s_pScreenInfo->fAnotherWMRunning)
winMWExtWMRestackWindows(s_pScreen);
}
#endif
return 0;
case WM_COMMAND:
switch (LOWORD(wParam)) {
case ID_APP_EXIT:
/* Display Exit dialog */
winDisplayExitDialog(s_pScreenPriv);
return 0;
#ifdef XWIN_MULTIWINDOW
case ID_APP_HIDE_ROOT:
if (s_pScreenPriv->fRootWindowShown)
ShowWindow(s_pScreenPriv->hwndScreen, SW_HIDE);
else
ShowWindow(s_pScreenPriv->hwndScreen, SW_SHOW);
s_pScreenPriv->fRootWindowShown = !s_pScreenPriv->fRootWindowShown;
return 0;
#endif
case ID_APP_ABOUT:
/* Display the About box */
winDisplayAboutDialog(s_pScreenPriv);
return 0;
default:
/* It's probably one of the custom menus... */
if (HandleCustomWM_COMMAND(0, LOWORD(wParam)))
return 0;
}
break;
case WM_ENDSESSION:
case WM_GIVEUP:
/* Tell X that we are giving up */
#ifdef XWIN_MULTIWINDOW
if (s_pScreenInfo->fMultiWindow)
winDeinitMultiWindowWM();
#endif
GiveUp(0);
return 0;
case WM_CLOSE:
/* Display Exit dialog */
winDisplayExitDialog(s_pScreenPriv);
return 0;
case WM_SETCURSOR:
if (LOWORD(lParam) == HTCLIENT) {
if (!g_fSoftwareCursor)
SetCursor(s_pScreenPriv->cursor.handle);
return TRUE;
}
break;
#ifdef XWIN_MULTIWINDOWEXTWM
case WM_MANAGE:
ErrorF("winWindowProc - WM_MANAGE\n");
s_pScreenInfo->fAnotherWMRunning = FALSE;
if (s_pScreenInfo->fInternalWM) {
EnumThreadWindows(g_dwCurrentThreadID, winMWExtWMDecorateWindow, 0);
//RootlessRepositionWindows (s_pScreen);
}
break;
case WM_UNMANAGE:
ErrorF("winWindowProc - WM_UNMANAGE\n");
s_pScreenInfo->fAnotherWMRunning = TRUE;
if (s_pScreenInfo->fInternalWM) {
EnumThreadWindows(g_dwCurrentThreadID, winMWExtWMDecorateWindow, 0);
winMWExtWMRestackWindows(s_pScreen);
}
break;
#endif
default:
if (message == s_uTaskbarRestart) {
winInitNotifyIcon(s_pScreenPriv);
}
break;
}
return DefWindowProc(hwnd, message, wParam, lParam);
}
/* Handle the mouse wheel */
int
winMouseWheel (ScreenPtr pScreen, int iDeltaZ)
{
winScreenPriv(pScreen);
int button; /* Button4 or Button5 */
/* Button4 = WheelUp */
/* Button5 = WheelDown */
/* Do we have any previous delta stored? */
if ((pScreenPriv->iDeltaZ > 0
&& iDeltaZ > 0)
|| (pScreenPriv->iDeltaZ < 0
&& iDeltaZ < 0))
{
/* Previous delta and of same sign as current delta */
iDeltaZ += pScreenPriv->iDeltaZ;
pScreenPriv->iDeltaZ = 0;
}
else
{
/*
* Previous delta of different sign, or zero.
* We will set it to zero for either case,
* as blindly setting takes just as much time
* as checking, then setting if necessary :)
*/
pScreenPriv->iDeltaZ = 0;
}
/*
* Only process this message if the wheel has moved further than
* WHEEL_DELTA
*/
if (iDeltaZ >= WHEEL_DELTA || (-1 * iDeltaZ) >= WHEEL_DELTA)
{
pScreenPriv->iDeltaZ = 0;
/* Figure out how many whole deltas of the wheel we have */
iDeltaZ /= WHEEL_DELTA;
}
else
{
/*
* Wheel has not moved past WHEEL_DELTA threshold;
* we will store the wheel delta until the threshold
* has been reached.
*/
pScreenPriv->iDeltaZ = iDeltaZ;
return 0;
}
/* Set the button to indicate up or down wheel delta */
if (iDeltaZ > 0)
{
button = Button4;
}
else
{
button = Button5;
}
/*
* Flip iDeltaZ to positive, if negative,
* because always need to generate a *positive* number of
* button clicks for the Z axis.
*/
if (iDeltaZ < 0)
{
iDeltaZ *= -1;
}
/* Generate X input messages for each wheel delta we have seen */
while (iDeltaZ--)
{
/* Push the wheel button */
winMouseButtonsSendEvent (ButtonPress, button);
/* Release the wheel button */
winMouseButtonsSendEvent (ButtonRelease, button);
}
return 0;
}