[deb_xorg-server.git] / hw / xwin / winkeyhook.c

/*
 *Copyright (C) 2004 Harold L Hunt II 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 HAROLD L HUNT II 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 Harold L Hunt II
 *shall not be used in advertising or otherwise to promote the sale, use
 *or other dealings in this Software without prior written authorization
 *from Harold L Hunt II.
 *
 * Authors:	Harold L Hunt II
 */

#ifdef HAVE_XWIN_CONFIG_H
#include <xwin-config.h>
#endif
#include "win.h"

static HHOOK g_hhookKeyboardLL = NULL;

/*
 * Function prototypes
 */

static LRESULT CALLBACK
winKeyboardMessageHookLL(int iCode, WPARAM wParam, LPARAM lParam);

#ifndef LLKHF_EXTENDED
#define LLKHF_EXTENDED  0x00000001
#endif
#ifndef LLKHF_UP
#define LLKHF_UP  0x00000080
#endif

/*
 * KeyboardMessageHook
 */

static LRESULT CALLBACK
winKeyboardMessageHookLL(int iCode, WPARAM wParam, LPARAM lParam)
{
    BOOL fPassKeystroke = FALSE;
    BOOL fPassAltTab = TRUE;
    PKBDLLHOOKSTRUCT p = (PKBDLLHOOKSTRUCT) lParam;
    HWND hwnd = GetActiveWindow();

#ifdef XWIN_MULTIWINDOW
    WindowPtr pWin = NULL;
    winPrivWinPtr pWinPriv = NULL;
    winPrivScreenPtr pScreenPriv = NULL;
    winScreenInfo *pScreenInfo = NULL;

    /* Check if the Windows window property for our X window pointer is valid */
    if ((pWin = GetProp(hwnd, WIN_WINDOW_PROP)) != NULL) {
        /* Get a pointer to our window privates */
        pWinPriv = winGetWindowPriv(pWin);

        /* Get pointers to our screen privates and screen info */
        pScreenPriv = pWinPriv->pScreenPriv;
        pScreenInfo = pScreenPriv->pScreenInfo;

        if (pScreenInfo->fMultiWindow)
            fPassAltTab = FALSE;
    }
#endif

    /* Pass keystrokes on to our main message loop */
    if (iCode == HC_ACTION) {
        winDebug("winKeyboardMessageHook: vkCode: %08x scanCode: %08x\n",
                 p->vkCode, p->scanCode);

        switch (wParam) {
        case WM_KEYDOWN:
        case WM_SYSKEYDOWN:
        case WM_KEYUP:
        case WM_SYSKEYUP:
            fPassKeystroke =
                (fPassAltTab &&
                 (p->vkCode == VK_TAB) && ((p->flags & LLKHF_ALTDOWN) != 0))
                || (p->vkCode == VK_LWIN) || (p->vkCode == VK_RWIN);
            break;
        }
    }

    /*
     * Pass message on to our main message loop.
     * We process this immediately with SendMessage so that the keystroke
     * appears in, hopefully, the correct order.
     */
    if (fPassKeystroke) {
        LPARAM lParamKey = 0x0;

        /* Construct the lParam from KBDLLHOOKSTRUCT */
        lParamKey = lParamKey | (0x0000FFFF & 0x00000001);      /* Repeat count */
        lParamKey = lParamKey | (0x00FF0000 & (p->scanCode << 16));
        lParamKey = lParamKey
            | (0x01000000 & ((p->flags & LLKHF_EXTENDED) << 23));
        lParamKey = lParamKey
            | (0x20000000 & ((p->flags & LLKHF_ALTDOWN) << 24));
        lParamKey = lParamKey | (0x80000000 & ((p->flags & LLKHF_UP) << 24));

        /* Send message to our main window that has the keyboard focus */
        PostMessage(hwnd, (UINT) wParam, (WPARAM) p->vkCode, lParamKey);

        return 1;
    }

    /* Call next hook */
    return CallNextHookEx(NULL, iCode, wParam, lParam);
}

/*
 * Attempt to install the keyboard hook, return FALSE if it was not installed
 */

Bool
winInstallKeyboardHookLL(void)
{
    /* Install the hook only once */
    if (!g_hhookKeyboardLL)
        g_hhookKeyboardLL = SetWindowsHookEx(WH_KEYBOARD_LL,
                                             winKeyboardMessageHookLL,
                                             g_hInstance, 0);

    return TRUE;
}

/*
 * Remove the keyboard hook if it is installed
 */

void
winRemoveKeyboardHookLL(void)
{
    if (g_hhookKeyboardLL)
        UnhookWindowsHookEx(g_hhookKeyboardLL);
    g_hhookKeyboardLL = NULL;
}
Commit	Line	Data
a09e091a JB	1	/*
	2	*Copyright (C) 2004 Harold L Hunt II All Rights Reserved.
	3	*
	4	*Permission is hereby granted, free of charge, to any person obtaining
	5	* a copy of this software and associated documentation files (the
	6	*"Software"), to deal in the Software without restriction, including
	7	*without limitation the rights to use, copy, modify, merge, publish,
	8	*distribute, sublicense, and/or sell copies of the Software, and to
	9	*permit persons to whom the Software is furnished to do so, subject to
	10	*the following conditions:
	11	*
	12	*The above copyright notice and this permission notice shall be
	13	*included in all copies or substantial portions of the Software.
	14	*
	15	*THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	16	*EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	17	*MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	18	*NONINFRINGEMENT. IN NO EVENT SHALL HAROLD L HUNT II BE LIABLE FOR
	19	*ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
	20	*CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
	21	*WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	22	*
	23	*Except as contained in this notice, the name of Harold L Hunt II
	24	*shall not be used in advertising or otherwise to promote the sale, use
	25	*or other dealings in this Software without prior written authorization
	26	*from Harold L Hunt II.
	27	*
	28	* Authors: Harold L Hunt II
	29	*/
	30
	31	#ifdef HAVE_XWIN_CONFIG_H
	32	#include <xwin-config.h>
	33	#endif
	34	#include "win.h"
	35
	36	static HHOOK g_hhookKeyboardLL = NULL;
	37
	38	/*
	39	* Function prototypes
	40	*/
	41
	42	static LRESULT CALLBACK
	43	winKeyboardMessageHookLL(int iCode, WPARAM wParam, LPARAM lParam);
	44
	45	#ifndef LLKHF_EXTENDED
	46	#define LLKHF_EXTENDED 0x00000001
	47	#endif
	48	#ifndef LLKHF_UP
	49	#define LLKHF_UP 0x00000080
	50	#endif
	51
	52	/*
	53	* KeyboardMessageHook
	54	*/
	55
	56	static LRESULT CALLBACK
	57	winKeyboardMessageHookLL(int iCode, WPARAM wParam, LPARAM lParam)
	58	{
	59	BOOL fPassKeystroke = FALSE;
	60	BOOL fPassAltTab = TRUE;
	61	PKBDLLHOOKSTRUCT p = (PKBDLLHOOKSTRUCT) lParam;
	62	HWND hwnd = GetActiveWindow();
	63
	64	#ifdef XWIN_MULTIWINDOW
65	WindowPtr pWin = NULL;
66	winPrivWinPtr pWinPriv = NULL;
67	winPrivScreenPtr pScreenPriv = NULL;
68	winScreenInfo *pScreenInfo = NULL;
69
70	/* Check if the Windows window property for our X window pointer is valid */
71	if ((pWin = GetProp(hwnd, WIN_WINDOW_PROP)) != NULL) {
72	/* Get a pointer to our window privates */
73	pWinPriv = winGetWindowPriv(pWin);
74
75	/* Get pointers to our screen privates and screen info */
76	pScreenPriv = pWinPriv->pScreenPriv;
77	pScreenInfo = pScreenPriv->pScreenInfo;
78
79	if (pScreenInfo->fMultiWindow)
80	fPassAltTab = FALSE;
81	}
82	#endif
83
84	/* Pass keystrokes on to our main message loop */
85	if (iCode == HC_ACTION) {
86	winDebug("winKeyboardMessageHook: vkCode: %08x scanCode: %08x\n",
87	p->vkCode, p->scanCode);
88
89	switch (wParam) {
90	case WM_KEYDOWN:
91	case WM_SYSKEYDOWN:
92	case WM_KEYUP:
93	case WM_SYSKEYUP:
94	fPassKeystroke =
95	(fPassAltTab &&
96	(p->vkCode == VK_TAB) && ((p->flags & LLKHF_ALTDOWN) != 0))
97	\|\| (p->vkCode == VK_LWIN) \|\| (p->vkCode == VK_RWIN);
98	break;
99	}
100	}
101
102	/*
103	* Pass message on to our main message loop.
104	* We process this immediately with SendMessage so that the keystroke
105	* appears in, hopefully, the correct order.
106	*/
107	if (fPassKeystroke) {
108	LPARAM lParamKey = 0x0;
109
110	/* Construct the lParam from KBDLLHOOKSTRUCT */
111	lParamKey = lParamKey \| (0x0000FFFF & 0x00000001); /* Repeat count */
112	lParamKey = lParamKey \| (0x00FF0000 & (p->scanCode << 16));
113	lParamKey = lParamKey
114	\| (0x01000000 & ((p->flags & LLKHF_EXTENDED) << 23));
115	lParamKey = lParamKey
116	\| (0x20000000 & ((p->flags & LLKHF_ALTDOWN) << 24));
117	lParamKey = lParamKey \| (0x80000000 & ((p->flags & LLKHF_UP) << 24));
118
119	/* Send message to our main window that has the keyboard focus */
120	PostMessage(hwnd, (UINT) wParam, (WPARAM) p->vkCode, lParamKey);
121
122	return 1;
123	}
124
125	/* Call next hook */
126	return CallNextHookEx(NULL, iCode, wParam, lParam);
127	}
128
129	/*
130	* Attempt to install the keyboard hook, return FALSE if it was not installed
131	*/
132
133	Bool
134	winInstallKeyboardHookLL(void)
135	{
136	/* Install the hook only once */
137	if (!g_hhookKeyboardLL)
138	g_hhookKeyboardLL = SetWindowsHookEx(WH_KEYBOARD_LL,
139	winKeyboardMessageHookLL,
140	g_hInstance, 0);
141
142	return TRUE;
143	}
144
145	/*
146	* Remove the keyboard hook if it is installed
147	*/
148
149	void
150	winRemoveKeyboardHookLL(void)
151	{
152	if (g_hhookKeyboardLL)
153	UnhookWindowsHookEx(g_hhookKeyboardLL);
154	g_hhookKeyboardLL = NULL;
155	}