trunk/PTD/PTD.cpp

/* PTD.cpp - Privacy Tray Dynamic
 *      Copyright (C) 2002-2005 Timo Schulz
 *
 * This file is part of WinPT.
 *
 * WinPT is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * WinPT is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with WinPT; if not, write to the Free Software Foundation, 
 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */

#include <windows.h>
#include <stdio.h>
#include <ocidl.h>
#include <olectl.h>

#include "wptJPG.h"

HINSTANCE glob_hinst;

/* We need a special section in the DLL for storing our shared data */
#pragma data_seg(".SHARDAT")
static HHOOK cbt_hook = NULL;
static DWORD tray_proc_id = 0;
static HWND shell_traywnd = 0;
static HWND curr_focus = NULL;
static HWND rebar_w32 = NULL;
static HWND mstask_swc = NULL;
static HWND systab_c32 = NULL;
#pragma data_seg()

static unsigned * journ_keys = 0;
static unsigned key_idx = 0;
static unsigned nkeys = 0;
static HHOOK journ_hook = NULL;


static LRESULT CALLBACK
PTD_CBT_proc (int code, WPARAM wparam, LPARAM lparam)
{
    HWND curr_hwnd = NULL;      
    DWORD proc_id = 0;
    
    if (code >= 0 && code == HCBT_SETFOCUS) {
        /* A window is about to receive the keyboard focus */           
        
        curr_hwnd = (HWND)wparam;
        GetWindowThreadProcessId( curr_hwnd, &proc_id );
        /* Only if the current window is different from this window list,
           we set the new focus. For more information read the hint in 
           PTD_initialize. */
        if ((proc_id != tray_proc_id)
             && (curr_hwnd != NULL)
             && (curr_hwnd != curr_focus)
             && (curr_hwnd != shell_traywnd)
             && (curr_hwnd != systab_c32)
             && (curr_hwnd != mstask_swc)
             && (curr_hwnd != rebar_w32)) {
            curr_focus = curr_hwnd;
        }
    }
    
    return  CallNextHookEx (cbt_hook , code, wparam, lparam);
}


/* Return the last selected window */
HWND
PTD_get_curr_hwnd (void)
{
    return curr_focus;
}


/* Initialize CTB hook and try to find the system windows. */
BOOL
PTD_initialize (void)
{
    tray_proc_id = GetCurrentProcessId ();
    cbt_hook = SetWindowsHookEx (WH_CBT, PTD_CBT_proc, glob_hinst, 0);
    if (cbt_hook == NULL)
        return FALSE;
    
    /* Okay, what are we doing here:
     * In the past I used the Spy++ application to find out why the old current window
     * doesn't work on so much systems. Now we try to use the computer based training
     * hook, more precise the HCBT_SETFOCUS to find out the last window focus. But to
     * succeed we need to ignore some windows because otherwise our own window or a
     * window from the taskbar would be recognized.
     *
     * Here is what the Spy++ says about the windows order:
     * Shell_TrayWnd
     *  \ ReBarWindow32
     *                \ MSTaskSwWClass
     *                               \ SysTabControl32
     * 
     * As a result we need to ignore those windows to prevent failured in the code.
     */
    shell_traywnd = FindWindowEx (NULL, NULL, "Shell_TrayWnd", NULL);
    rebar_w32 = FindWindowEx (shell_traywnd, NULL, "ReBarWindow32", NULL);
    mstask_swc = FindWindowEx (rebar_w32, NULL, "MSTaskSwWClass", NULL);
    systab_c32 = FindWindowEx (mstask_swc, NULL, "SysTabControl32", NULL);
    
    /*_log_box ("tray_proc_id=%u cbt_hook=%p shell_traywnd=%p rebar_w32=%p "
                "mstask_swc=%p systab_c32=%p",
                tray_proc_id, cbt_hook, shell_traywnd, rebar_w32, 
                mstask_swc, systab_c32);*/
    
    return TRUE;
}


/* Remove the CTB hook from the system and reset all variables. */
void
PTD_delete (void)
{
    if (!cbt_hook)
        return;
    UnhookWindowsHookEx (cbt_hook);
    cbt_hook = NULL;
    shell_traywnd = NULL;
    tray_proc_id = 0;
}


/* Return if the CTB hook is currently used. */
int
PTD_is_used (void)
{
    return shell_traywnd && cbt_hook;
}


static LRESULT CALLBACK 
PTD_playback_proc (int code, WPARAM wparam, LPARAM lparam)
{
    LPEVENTMSG em;
    
    if (code == HC_SKIP) {
        key_idx++;
        if (key_idx == nkeys) {
            UnhookWindowsHookEx (journ_hook);
            journ_hook = NULL;
        }
        return 0;
    }
    else if (code == HC_GETNEXT) {
        /* Here is an overview what the event message struct can contain:
         * message - WM_KEYUP, WM_KEYDOWN, WM_SYSKEYUP, WM_SYSKEYDOWN:
         * paramL - specifies the virtual key code of the key that was pressed.
         * paramH - specifies the scan code.                            
         */
        em = (LPEVENTMSG )lparam;
        if (journ_keys[key_idx] & 0x8000)
            em->message = journ_keys[key_idx] & 0x4000 ? WM_SYSKEYDOWN : WM_KEYDOWN;
        else 
            em->message = journ_keys[key_idx] & 0x4000 ? WM_SYSKEYUP : WM_KEYUP;
        em->paramL = LOBYTE( journ_keys[key_idx] )
            | (MapVirtualKey (LOBYTE (journ_keys[key_idx]), 0) << 8);
        em->paramH = 1;
        em->time = GetTickCount ();
        return 0;
    }
    
    return CallNextHookEx (journ_hook, code, wparam, lparam);
} /* PTD_Playback_proc */


BOOL
PTD_keyb_send (UINT *keys, UINT n_keys)
{
    MSG msg;
    journ_keys = keys;
    key_idx = 0;
    nkeys =  n_keys;    
    
    if (journ_hook)
        return FALSE;
    
    while (GetAsyncKeyState (VK_MENU) & 0x8000
            || GetAsyncKeyState (VK_SHIFT) & 0x8000
            || GetAsyncKeyState (VK_CONTROL) & 0x8000) {
        if (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) {
            if (msg.message == WM_QUIT) {
                PostMessage (msg.hwnd, msg.message, msg.wParam, msg.lParam);
                return FALSE;
            }
            TranslateMessage (&msg);
            DispatchMessage (&msg);
        }
    }
    journ_hook = SetWindowsHookEx (WH_JOURNALPLAYBACK,
                                   (HOOKPROC)PTD_playback_proc,
                                   glob_hinst, 0);
    if (journ_hook == NULL)
        return FALSE;
    
    while (journ_hook) {
        if (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) {
            if (msg.message == WM_QUIT) {
                if (journ_hook)
                    UnhookWindowsHookEx (journ_hook);
                PostMessage (msg.hwnd, msg.message, msg.wParam, msg.wParam);
            }
            TranslateMessage (&msg);
            DispatchMessage (&msg);
        }
    }
    
    return TRUE;
}


const char *
PTD_get_version (void)
{
    return "0.8.1";
}


/* Display a JPG picture in the given window at the given point. */
int
PTD_jpg_show (HWND hwnd, POINT *p, LPCSTR name)
{
    CJPG jpg;
    HDC hdc;
    POINT p2;
    BOOL rc;

    rc = jpg.Load (name);
    if (!rc)
        return -1;
    hdc = GetWindowDC (hwnd);
    rc = jpg.UpdateSizeOnDC (hdc);
    if (!rc) {
        ReleaseDC (hwnd, hdc);
        return -2;
    }

    p2.x = jpg.m_Width;
    p2.y = jpg.m_Height;
    rc = jpg.Show (hdc, p, &p2, 0, 0);

    ReleaseDC (hwnd, hdc);
    jpg.FreePictureData ();
    return rc;
}


BOOL WINAPI 
DllMain (HINSTANCE hinst, DWORD reason, LPVOID reserv)
{
    switch (reason)  {
    case DLL_PROCESS_ATTACH: 
        glob_hinst = hinst; 
        break;
    case DLL_THREAD_ATTACH:  
        break;
    case DLL_THREAD_DETACH:  
        break;
    case DLL_PROCESS_DETACH: 
        break;
    }
    return TRUE;
}

1	twoaday	2	/* PTD.cpp - Privacy Tray Dynamic
2			* Copyright (C) 2002-2005 Timo Schulz
3			*
4			* This file is part of WinPT.
5			*
6			* WinPT is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* WinPT is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with WinPT; if not, write to the Free Software Foundation,
18			* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
19			*/
20
21			#include <windows.h>
22			#include <stdio.h>
23	twoaday	32	#include <ocidl.h>
24			#include <olectl.h>
25	twoaday	2
26	twoaday	32	#include "wptJPG.h"
27
28	twoaday	2	HINSTANCE glob_hinst;
29
30			/* We need a special section in the DLL for storing our shared data */
31			#pragma data_seg(".SHARDAT")
32			static HHOOK cbt_hook = NULL;
33			static DWORD tray_proc_id = 0;
34			static HWND shell_traywnd = 0;
35			static HWND curr_focus = NULL;
36			static HWND rebar_w32 = NULL;
37			static HWND mstask_swc = NULL;
38			static HWND systab_c32 = NULL;
39			#pragma data_seg()
40
41			static unsigned * journ_keys = 0;
42			static unsigned key_idx = 0;
43			static unsigned nkeys = 0;
44			static HHOOK journ_hook = NULL;
45
46
47			static LRESULT CALLBACK
48			PTD_CBT_proc (int code, WPARAM wparam, LPARAM lparam)
49			{
50			HWND curr_hwnd = NULL;
51			DWORD proc_id = 0;
52
53			if (code >= 0 && code == HCBT_SETFOCUS) {
54			/* A window is about to receive the keyboard focus */
55
56			curr_hwnd = (HWND)wparam;
57			GetWindowThreadProcessId( curr_hwnd, &proc_id );
58			/* Only if the current window is different from this window list,
59			we set the new focus. For more information read the hint in
60			PTD_initialize. */
61			if ((proc_id != tray_proc_id)
62			&& (curr_hwnd != NULL)
63			&& (curr_hwnd != curr_focus)
64			&& (curr_hwnd != shell_traywnd)
65			&& (curr_hwnd != systab_c32)
66			&& (curr_hwnd != mstask_swc)
67			&& (curr_hwnd != rebar_w32)) {
68			curr_focus = curr_hwnd;
69			}
70			}
71
72			return CallNextHookEx (cbt_hook , code, wparam, lparam);
73	twoaday	32	}
74	twoaday	2
75
76	twoaday	32	/* Return the last selected window */
77	twoaday	2	HWND
78			PTD_get_curr_hwnd (void)
79			{
80			return curr_focus;
81	twoaday	32	}
82	twoaday	2
83
84	twoaday	32	/* Initialize CTB hook and try to find the system windows. */
85	twoaday	2	BOOL
86			PTD_initialize (void)
87			{
88	twoaday	32	tray_proc_id = GetCurrentProcessId ();
89			cbt_hook = SetWindowsHookEx (WH_CBT, PTD_CBT_proc, glob_hinst, 0);
90			if (cbt_hook == NULL)
91	twoaday	2	return FALSE;
92
93			/* Okay, what are we doing here:
94			* In the past I used the Spy++ application to find out why the old current window
95			* doesn't work on so much systems. Now we try to use the computer based training
96			* hook, more precise the HCBT_SETFOCUS to find out the last window focus. But to
97			* succeed we need to ignore some windows because otherwise our own window or a
98			* window from the taskbar would be recognized.
99			*
100			* Here is what the Spy++ says about the windows order:
101			* Shell_TrayWnd
102			* \ ReBarWindow32
103			* \ MSTaskSwWClass
104			* \ SysTabControl32
105			*
106			* As a result we need to ignore those windows to prevent failured in the code.
107			*/
108			shell_traywnd = FindWindowEx (NULL, NULL, "Shell_TrayWnd", NULL);
109			rebar_w32 = FindWindowEx (shell_traywnd, NULL, "ReBarWindow32", NULL);
110			mstask_swc = FindWindowEx (rebar_w32, NULL, "MSTaskSwWClass", NULL);
111			systab_c32 = FindWindowEx (mstask_swc, NULL, "SysTabControl32", NULL);
112
113			/*_log_box ("tray_proc_id=%u cbt_hook=%p shell_traywnd=%p rebar_w32=%p "
114			"mstask_swc=%p systab_c32=%p",
115			tray_proc_id, cbt_hook, shell_traywnd, rebar_w32,
116			mstask_swc, systab_c32);*/
117
118			return TRUE;
119	twoaday	32	}
120	twoaday	2
121
122	twoaday	32	/* Remove the CTB hook from the system and reset all variables. */
123	twoaday	2	void
124			PTD_delete (void)
125			{
126			if (!cbt_hook)
127			return;
128			UnhookWindowsHookEx (cbt_hook);
129			cbt_hook = NULL;
130			shell_traywnd = NULL;
131			tray_proc_id = 0;
132	twoaday	32	}
133	twoaday	2
134
135	twoaday	32	/* Return if the CTB hook is currently used. */
136	twoaday	2	int
137			PTD_is_used (void)
138			{
139			return shell_traywnd && cbt_hook;
140	twoaday	32	}
141	twoaday	2
142
143	twoaday	32	static LRESULT CALLBACK
144	twoaday	2	PTD_playback_proc (int code, WPARAM wparam, LPARAM lparam)
145			{
146			LPEVENTMSG em;
147
148			if (code == HC_SKIP) {
149			key_idx++;
150			if (key_idx == nkeys) {
151			UnhookWindowsHookEx (journ_hook);
152			journ_hook = NULL;
153			}
154			return 0;
155			}
156			else if (code == HC_GETNEXT) {
157			/* Here is an overview what the event message struct can contain:
158			* message - WM_KEYUP, WM_KEYDOWN, WM_SYSKEYUP, WM_SYSKEYDOWN:
159			* paramL - specifies the virtual key code of the key that was pressed.
160			* paramH - specifies the scan code.
161			*/
162			em = (LPEVENTMSG )lparam;
163			if (journ_keys[key_idx] & 0x8000)
164			em->message = journ_keys[key_idx] & 0x4000 ? WM_SYSKEYDOWN : WM_KEYDOWN;
165			else
166			em->message = journ_keys[key_idx] & 0x4000 ? WM_SYSKEYUP : WM_KEYUP;
167			em->paramL = LOBYTE( journ_keys[key_idx] )
168			\| (MapVirtualKey (LOBYTE (journ_keys[key_idx]), 0) << 8);
169			em->paramH = 1;
170			em->time = GetTickCount ();
171			return 0;
172			}
173
174			return CallNextHookEx (journ_hook, code, wparam, lparam);
175			} /* PTD_Playback_proc */
176
177
178	twoaday	32
179	twoaday	2	BOOL
180	twoaday	32	PTD_keyb_send (UINT *keys, UINT n_keys)
181	twoaday	2	{
182			MSG msg;
183			journ_keys = keys;
184			key_idx = 0;
185			nkeys = n_keys;
186
187			if (journ_hook)
188			return FALSE;
189
190			while (GetAsyncKeyState (VK_MENU) & 0x8000
191			\|\| GetAsyncKeyState (VK_SHIFT) & 0x8000
192			\|\| GetAsyncKeyState (VK_CONTROL) & 0x8000) {
193			if (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) {
194			if (msg.message == WM_QUIT) {
195			PostMessage (msg.hwnd, msg.message, msg.wParam, msg.lParam);
196			return FALSE;
197			}
198			TranslateMessage (&msg);
199			DispatchMessage (&msg);
200			}
201			}
202			journ_hook = SetWindowsHookEx (WH_JOURNALPLAYBACK,
203			(HOOKPROC)PTD_playback_proc,
204			glob_hinst, 0);
205			if (journ_hook == NULL)
206			return FALSE;
207
208			while (journ_hook) {
209			if (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) {
210			if (msg.message == WM_QUIT) {
211			if (journ_hook)
212			UnhookWindowsHookEx (journ_hook);
213			PostMessage (msg.hwnd, msg.message, msg.wParam, msg.wParam);
214			}
215			TranslateMessage (&msg);
216			DispatchMessage (&msg);
217			}
218			}
219
220			return TRUE;
221	twoaday	32	}
222	twoaday	2
223
224			const char *
225			PTD_get_version (void)
226			{
227	twoaday	32	return "0.8.1";
228			}
229	twoaday	2
230	twoaday	32
231			/* Display a JPG picture in the given window at the given point. */
232			int
233			PTD_jpg_show (HWND hwnd, POINT *p, LPCSTR name)
234			{
235			CJPG jpg;
236			HDC hdc;
237			POINT p2;
238			BOOL rc;
239
240			rc = jpg.Load (name);
241			if (!rc)
242			return -1;
243			hdc = GetWindowDC (hwnd);
244			rc = jpg.UpdateSizeOnDC (hdc);
245			if (!rc) {
246			ReleaseDC (hwnd, hdc);
247			return -2;
248			}
249
250			p2.x = jpg.m_Width;
251			p2.y = jpg.m_Height;
252			rc = jpg.Show (hdc, p, &p2, 0, 0);
253
254			ReleaseDC (hwnd, hdc);
255			jpg.FreePictureData ();
256			return rc;
257			}
258
259
260	twoaday	2
261			BOOL WINAPI
262			DllMain (HINSTANCE hinst, DWORD reason, LPVOID reserv)
263			{
264			switch (reason) {
265			case DLL_PROCESS_ATTACH:
266			glob_hinst = hinst;
267			break;
268			case DLL_THREAD_ATTACH:
269			break;
270			case DLL_THREAD_DETACH:
271			break;
272			case DLL_PROCESS_DETACH:
273			break;
274			}
275			return TRUE;
276	twoaday	32	}
277