Merge branch 'cygwin-patches-for-1.15' into cygwin-release-1.15xserver-cygwin-1.15.0-1

1 files changed, 308 insertions, 0 deletions

diff --git a/hw/xwin/wmutil/keyboard.c b/hw/xwin/wmutil/keyboard.c
new file mode 100644
index 000000000..780668d42
--- /dev/null
+++ b/hw/xwin/wmutil/keyboard.c
@@ -0,0 +1,308 @@
+/*
+ *Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved.
+ *
+ *Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ *"Software"), to deal in the Software without restriction, including
+ *without limitation the rights to use, copy, modify, merge, publish,
+ *distribute, sublicense, and/or sell copies of the Software, and to
+ *permit persons to whom the Software is furnished to do so, subject to
+ *the following conditions:
+ *
+ *The above copyright notice and this permission notice shall be
+ *included in all copies or substantial portions of the Software.
+ *
+ *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *NONINFRINGEMENT. IN NO EVENT SHALL THE XFREE86 PROJECT BE LIABLE FOR
+ *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ *Except as contained in this notice, the name of the XFree86 Project
+ *shall not be used in advertising or otherwise to promote the sale, use
+ *or other dealings in this Software without prior written authorization
+ *from the XFree86 Project.
+ *
+ * Authors:	Dakshinamurthy Karra
+ *		Suhaib M Siddiqi
+ *		Peter Busch
+ *		Harold L Hunt II
+ */
+
+#ifdef HAVE_XWIN_CONFIG_H
+#include <xwin-config.h>
+#endif
+
+#include <X11/Xwindows.h>
+#include <X11/Xmd.h>   // to provide a BYTE type, since the Windows one is eclipsed
+
+#include "winvkmap.h"
+#include "keyboard.h"
+
+#include "winmsg.h"
+
+static bool g_winKeyState[NUM_KEYCODES];
+
+/*
+ * Translate a Windows WM_[SYS]KEY(UP/DOWN) message
+ * into an ASCII scan code.
+ *
+ * We do this ourselves, rather than letting Windows handle it,
+ * because Windows tends to munge the handling of special keys,
+ * like AltGr on European keyboards.
+ */
+
+int
+winTranslateKey(WPARAM wParam, LPARAM lParam)
+{
+    int iKeyFixup = g_iKeyMap[wParam * WIN_KEYMAP_COLS + 1];
+    int iKeyFixupEx = g_iKeyMap[wParam * WIN_KEYMAP_COLS + 2];
+    int iParam = HIWORD(lParam);
+    int iParamScanCode = LOBYTE(iParam);
+    int iScanCode;
+
+    winDebug("winTranslateKey: wParam %08x lParam %08x\n", wParam, lParam);
+
+/* WM_ key messages faked by Vista speech recognition (WSR) don't have a
+ * scan code.
+ *
+ * Vocola 3 (Rick Mohr's supplement to WSR) uses
+ * System.Windows.Forms.SendKeys.SendWait(), which appears always to give a
+ * scan code of 1
+ */
+    if (iParamScanCode <= 1) {
+        if (VK_PRIOR <= wParam && wParam <= VK_DOWN)
+            /* Trigger special case table to translate to extended
+             * keycode, otherwise if num_lock is on, we can get keypad
+             * numbers instead of navigation keys. */
+            iParam |= KF_EXTENDED;
+        else
+            iParamScanCode = MapVirtualKeyEx(wParam,
+                                             /*MAPVK_VK_TO_VSC */ 0,
+                                             GetKeyboardLayout(0));
+    }
+
+    /* Branch on special extended, special non-extended, or normal key */
+    if ((iParam & KF_EXTENDED) && iKeyFixupEx)
+        iScanCode = iKeyFixupEx;
+    else if (iKeyFixup)
+        iScanCode = iKeyFixup;
+    else if (wParam == 0 && iParamScanCode == 0x70)
+        iScanCode = KEY_HKTG;
+    else
+        switch (iParamScanCode) {
+        case 0x70:
+            iScanCode = KEY_HKTG;
+            break;
+        case 0x73:
+            iScanCode = KEY_BSlash2;
+            break;
+        default:
+            iScanCode = iParamScanCode;
+            break;
+        }
+
+    return iScanCode;
+}
+
+/*
+ * Look for the lovely fake Control_L press/release generated by Windows
+ * when AltGr is pressed/released on a non-U.S. keyboard.
+ */
+
+bool
+winIsFakeCtrl_L(UINT message, WPARAM wParam, LPARAM lParam)
+{
+    MSG msgNext;
+    LONG lTime;
+    bool fReturn;
+
+    static bool lastWasControlL = FALSE;
+    static LONG lastTime;
+
+    /*
+     * Fake Ctrl_L presses will be followed by an Alt_R press
+     * with the same timestamp as the Ctrl_L press.
+     */
+    if ((message == WM_KEYDOWN || message == WM_SYSKEYDOWN)
+        && wParam == VK_CONTROL && (HIWORD(lParam) & KF_EXTENDED) == 0) {
+        /* Got a Ctrl_L press */
+
+        /* Get time of current message */
+        lTime = GetMessageTime();
+
+        /* Look for next press message */
+        fReturn = PeekMessage(&msgNext, NULL,
+                              WM_KEYDOWN, WM_SYSKEYDOWN, PM_NOREMOVE);
+
+        if (fReturn && msgNext.message != WM_KEYDOWN &&
+            msgNext.message != WM_SYSKEYDOWN)
+            fReturn = 0;
+
+        if (!fReturn) {
+            lastWasControlL = TRUE;
+            lastTime = lTime;
+        }
+        else {
+            lastWasControlL = FALSE;
+        }
+
+        /* Is next press an Alt_R with the same timestamp? */
+        if (fReturn && msgNext.wParam == VK_MENU
+            && msgNext.time == lTime
+            && (HIWORD(msgNext.lParam) & KF_EXTENDED)) {
+            /*
+             * Next key press is Alt_R with same timestamp as current
+             * Ctrl_L message.  Therefore, this Ctrl_L press is a fake
+             * event, so discard it.
+             */
+            return TRUE;
+        }
+    }
+    /*
+     * Sometimes, the Alt_R press message is not yet posted when the
+     * fake Ctrl_L press message arrives (even though it has the
+     * same timestamp), so check for an Alt_R press message that has
+     * arrived since the last Ctrl_L message.
+     */
+    else if ((message == WM_KEYDOWN || message == WM_SYSKEYDOWN)
+             && wParam == VK_MENU && (HIWORD(lParam) & KF_EXTENDED)) {
+        /* Got a Alt_R press */
+
+        if (lastWasControlL) {
+            lTime = GetMessageTime();
+
+            if (lastTime == lTime) {
+                /* Undo the fake Ctrl_L press by sending a fake Ctrl_L release */
+                winSendKeyEvent(KEY_LCtrl, FALSE);
+            }
+            lastWasControlL = FALSE;
+        }
+    }
+    /*
+     * Fake Ctrl_L releases will be followed by an Alt_R release
+     * with the same timestamp as the Ctrl_L release.
+     */
+    else if ((message == WM_KEYUP || message == WM_SYSKEYUP)
+             && wParam == VK_CONTROL && (HIWORD(lParam) & KF_EXTENDED) == 0) {
+        /* Got a Ctrl_L release */
+
+        /* Get time of current message */
+        lTime = GetMessageTime();
+
+        /* Look for next release message */
+        fReturn = PeekMessage(&msgNext, NULL,
+                              WM_KEYUP, WM_SYSKEYUP, PM_NOREMOVE);
+
+        if (fReturn && msgNext.message != WM_KEYUP &&
+            msgNext.message != WM_SYSKEYUP)
+            fReturn = 0;
+
+        lastWasControlL = FALSE;
+
+        /* Is next press an Alt_R with the same timestamp? */
+        if (fReturn
+            && (msgNext.message == WM_KEYUP || msgNext.message == WM_SYSKEYUP)
+            && msgNext.wParam == VK_MENU
+            && msgNext.time == lTime
+            && (HIWORD(msgNext.lParam) & KF_EXTENDED)) {
+            /*
+             * Next key release is Alt_R with same timestamp as current
+             * Ctrl_L message. Therefore, this Ctrl_L release is a fake
+             * event, so discard it.
+             */
+            return TRUE;
+        }
+    }
+    else {
+        /* On any other press or release message, we don't have a
+           potentially fake Ctrl_L to worry about anymore... */
+        lastWasControlL = FALSE;
+    }
+
+    /* Not a fake control left press/release */
+    return FALSE;
+}
+
+/*
+ * Lift any modifier keys that are pressed
+ */
+
+void
+winKeybdReleaseKeys(void)
+{
+    int i;
+
+    /* Loop through all keys */
+    for (i = 0; i < NUM_KEYCODES; ++i) {
+        /* Pop key if pressed */
+        if (g_winKeyState[i])
+            winSendKeyEvent(i, FALSE);
+
+        /* Reset pressed flag for keys */
+        g_winKeyState[i] = FALSE;
+    }
+}
+
+/*
+ * Take a raw X key code and send an up or down event for it.
+ *
+ * Thanks to VNC for inspiration, though it is a simple function.
+ */
+
+void
+winSendKeyEvent(DWORD dwKey, bool fDown)
+{
+    /*
+     * When alt-tabing between screens we can get phantom key up messages
+     * Here we only pass them through it we think we should!
+     */
+    if (g_winKeyState[dwKey] == FALSE && fDown == FALSE)
+        return;
+
+    /* Update the keyState map */
+    g_winKeyState[dwKey] = fDown;
+
+    winSendKeyEventCallback(dwKey + MIN_KEYCODE, fDown);
+
+    winDebug("winSendKeyEvent: dwKey: %d, fDown: %d\n", dwKey, fDown);
+}
+
+bool
+winCheckKeyPressed(WPARAM wParam, LPARAM lParam)
+{
+    switch (wParam) {
+    case VK_CONTROL:
+        if ((lParam & 0x1ff0000) == 0x11d0000 && g_winKeyState[KEY_RCtrl])
+            return TRUE;
+        if ((lParam & 0x1ff0000) == 0x01d0000 && g_winKeyState[KEY_LCtrl])
+            return TRUE;
+        break;
+    case VK_SHIFT:
+        if ((lParam & 0x1ff0000) == 0x0360000 && g_winKeyState[KEY_ShiftR])
+            return TRUE;
+        if ((lParam & 0x1ff0000) == 0x02a0000 && g_winKeyState[KEY_ShiftL])
+            return TRUE;
+        break;
+    default:
+        return TRUE;
+    }
+    return FALSE;
+}
+
+/* Only one shift release message is sent even if both are pressed.
+ * Fix this here
+ */
+void
+winFixShiftKeys(int iScanCode)
+{
+    if (GetKeyState(VK_SHIFT) & 0x8000)
+        return;
+
+    if (iScanCode == KEY_ShiftL && g_winKeyState[KEY_ShiftR])
+        winSendKeyEvent(KEY_ShiftR, FALSE);
+    if (iScanCode == KEY_ShiftR && g_winKeyState[KEY_ShiftL])
+        winSendKeyEvent(KEY_ShiftL, FALSE);
+}