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/* PTD.cpp - Privacy Tray Dynamic |
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* Copyright (C) 2002-2006 Timo Schulz |
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* |
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* This file is part of WinPT. |
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* |
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* WinPT is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* WinPT is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with WinPT; if not, write to the Free Software Foundation, |
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
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*/ |
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|
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#ifdef HAVE_CONFIG_H |
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#include <config.h> |
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#endif |
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|
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#include <windows.h> |
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#include <stdio.h> |
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#include <ocidl.h> |
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#include <olectl.h> |
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|
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#include "wptJPG.h" |
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|
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HINSTANCE glob_hinst; |
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|
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/* We need a special section in the DLL for storing our shared data. |
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This shared data is required by the hook function because that |
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function is called in the context of the actual thread running the |
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hook and thus we need a way to communicate the result of our hook |
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function back to us. We use a shared data segment for this. */ |
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#ifdef __GNUC__ |
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#define ATTR_SEC __attribute__((section (".SHARDAT"), shared)) |
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#else |
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#define ATTR_SEC |
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#pragma data_seg(".SHARDAT") |
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#endif |
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static HHOOK cbt_hook ATTR_SEC = NULL; /* CTB hook handle. */ |
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static DWORD tray_proc_id ATTR_SEC = 0; /* WinPT PID */ |
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static HWND shell_traywnd ATTR_SEC = 0; /* Tray window handle. */ |
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static HWND curr_focus ATTR_SEC = NULL; /* Current window focus handle. */ |
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static HWND rebar_w32 ATTR_SEC = NULL; |
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static HWND mstask_swc ATTR_SEC = NULL; |
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static HWND systab_c32 ATTR_SEC = NULL; |
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#ifndef __GNUC__ |
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#pragma data_seg() |
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#endif |
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#undef ATTR_SEC |
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|
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static unsigned *journ_keys = 0; |
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static unsigned key_idx = 0; |
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static unsigned nkeys = 0; |
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static HHOOK journ_hook = NULL; /* Journaling hook handle. */ |
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|
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|
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void dns_cleanup (void); |
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|
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|
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static LRESULT CALLBACK |
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PTD_CBT_proc (int code, WPARAM wparam, LPARAM lparam) |
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{ |
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HWND curr_hwnd = NULL; |
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DWORD proc_id = 0; |
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|
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if (code >= 0 && code == HCBT_SETFOCUS) { |
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/* A window is about to receive the keyboard focus */ |
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|
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curr_hwnd = (HWND)wparam; |
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GetWindowThreadProcessId (curr_hwnd, &proc_id); |
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/* Only if the current window is different from this window list, |
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we set the new focus. For more information read the hint in |
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PTD_initialize. */ |
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if ((proc_id != tray_proc_id) |
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&& (curr_hwnd != NULL) |
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&& (curr_hwnd != curr_focus) |
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&& (curr_hwnd != shell_traywnd) |
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&& (curr_hwnd != systab_c32) |
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&& (curr_hwnd != mstask_swc) |
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&& (curr_hwnd != rebar_w32)) { |
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curr_focus = curr_hwnd; |
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} |
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} |
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|
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return CallNextHookEx (cbt_hook , code, wparam, lparam); |
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} |
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|
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|
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/* Return the last selected window */ |
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extern "C" HWND |
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PTD_get_curr_hwnd (void) |
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{ |
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return curr_focus; |
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} |
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|
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|
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/* Initialize CTB hook and try to find the system windows. */ |
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extern "C" BOOL |
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PTD_initialize (void) |
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{ |
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tray_proc_id = GetCurrentProcessId (); |
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cbt_hook = SetWindowsHookEx (WH_CBT, PTD_CBT_proc, glob_hinst, 0); |
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if (cbt_hook == NULL) |
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return FALSE; |
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|
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/* Okay, what are we doing here: |
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* In the past I used the Spy++ application to find out why the old current |
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* window doesn't work on so much systems. Now we try to use the computer |
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* based training hook, more precise the HCBT_SETFOCUS to find out the |
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* last window focus. But to succeed we need to ignore some windows |
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* because otherwise our own window or a window from the taskbar |
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* would be recognized. |
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* |
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* Here is what the Spy++ says about the windows order: |
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* Shell_TrayWnd |
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* \ ReBarWindow32 |
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* \ MSTaskSwWClass |
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* \ SysTabControl32 |
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* |
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* As a result we need to ignore those windows to prevent failured |
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* in the code. |
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*/ |
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shell_traywnd = FindWindowEx (NULL, NULL, "Shell_TrayWnd", NULL); |
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rebar_w32 = FindWindowEx (shell_traywnd, NULL, "ReBarWindow32", NULL); |
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mstask_swc = FindWindowEx (rebar_w32, NULL, "MSTaskSwWClass", NULL); |
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systab_c32 = FindWindowEx (mstask_swc, NULL, "SysTabControl32", NULL); |
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|
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/*log_foo ("tray_proc_id=%u cbt_hook=%p shell_traywnd=%p rebar_w32=%p " |
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"mstask_swc=%p systab_c32=%p", |
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tray_proc_id, cbt_hook, shell_traywnd, rebar_w32, |
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mstask_swc, systab_c32);*/ |
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|
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return TRUE; |
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} |
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|
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|
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/* Remove the CTB hook from the system and reset all variables. */ |
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extern "C" void |
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PTD_delete (void) |
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{ |
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if (!cbt_hook) |
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return; |
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dns_cleanup (); |
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UnhookWindowsHookEx (cbt_hook); |
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cbt_hook = NULL; |
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shell_traywnd = NULL; |
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tray_proc_id = 0; |
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} |
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|
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|
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/* Return if the CTB hook is currently used. */ |
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extern "C" int |
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PTD_is_used (void) |
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{ |
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return shell_traywnd && cbt_hook; |
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} |
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|
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|
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static LRESULT CALLBACK |
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PTD_playback_proc (int code, WPARAM wparam, LPARAM lparam) |
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{ |
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LPEVENTMSG em; |
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|
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if (code == HC_SKIP) { |
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key_idx++; |
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if (key_idx == nkeys) { |
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UnhookWindowsHookEx (journ_hook); |
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journ_hook = NULL; |
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} |
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return 0; |
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} |
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else if (code == HC_GETNEXT) { |
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/* Here is an overview what the event message struct can contain: |
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* message - WM_KEYUP, WM_KEYDOWN, WM_SYSKEYUP, WM_SYSKEYDOWN: |
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* paramL - specifies the virtual key code of the key that was pressed. |
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* paramH - specifies the scan code. |
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*/ |
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em = (LPEVENTMSG )lparam; |
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if (journ_keys[key_idx] & 0x8000) |
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em->message = journ_keys[key_idx] & 0x4000 ? WM_SYSKEYDOWN : WM_KEYDOWN; |
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else |
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em->message = journ_keys[key_idx] & 0x4000 ? WM_SYSKEYUP : WM_KEYUP; |
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em->paramL = LOBYTE( journ_keys[key_idx] ) |
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| (MapVirtualKey (LOBYTE (journ_keys[key_idx]), 0) << 8); |
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em->paramH = 1; |
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em->time = GetTickCount (); |
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return 0; |
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} |
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|
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return CallNextHookEx (journ_hook, code, wparam, lparam); |
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} |
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|
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|
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|
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extern "C" BOOL |
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PTD_keyb_send (UINT *keys, UINT n_keys) |
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{ |
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MSG msg; |
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journ_keys = keys; |
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key_idx = 0; |
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nkeys = n_keys; |
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|
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if (journ_hook) |
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return FALSE; |
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|
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while (GetAsyncKeyState (VK_MENU) & 0x8000 |
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|| GetAsyncKeyState (VK_SHIFT) & 0x8000 |
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|| GetAsyncKeyState (VK_CONTROL) & 0x8000) { |
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if (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) { |
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if (msg.message == WM_QUIT) { |
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PostMessage (msg.hwnd, msg.message, msg.wParam, msg.lParam); |
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return FALSE; |
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} |
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TranslateMessage (&msg); |
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DispatchMessage (&msg); |
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} |
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} |
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journ_hook = SetWindowsHookEx (WH_JOURNALPLAYBACK, |
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(HOOKPROC)PTD_playback_proc, |
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glob_hinst, 0); |
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if (journ_hook == NULL) |
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return FALSE; |
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|
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while (journ_hook) { |
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if (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) { |
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if (msg.message == WM_QUIT) { |
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if (journ_hook) |
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UnhookWindowsHookEx (journ_hook); |
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PostMessage (msg.hwnd, msg.message, msg.wParam, msg.wParam); |
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} |
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TranslateMessage (&msg); |
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DispatchMessage (&msg); |
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} |
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} |
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|
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return TRUE; |
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} |
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|
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|
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/* Display a JPG picture in the given window at the given point. */ |
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extern "C" int |
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PTD_jpg_show (HWND hwnd, POINT *p, LPCSTR name) |
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{ |
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CJPG jpg; |
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HDC hdc; |
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POINT sizewnd; |
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RECT rwnd; |
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BOOL rc; |
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|
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rc = jpg.load (name); |
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if (!rc) |
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return -1; /* XXX: use real return code. */ |
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hdc = GetWindowDC (hwnd); |
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rc = jpg.updateSizeOnDC (hdc); |
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if (!rc) { |
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ReleaseDC (hwnd, hdc); |
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return -2; /* XXX: use real return code. */ |
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} |
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|
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GetWindowRect (hwnd, &rwnd); |
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sizewnd.x = rwnd.right - rwnd.left; |
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sizewnd.y = rwnd.bottom - rwnd.top; |
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rc = jpg.show (hdc, p, &sizewnd, 0, 0); |
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|
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ReleaseDC (hwnd, hdc); |
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jpg.freePictureData (); |
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return rc; |
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} |
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|
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|
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extern "C" BOOL WINAPI |
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DllMain (HINSTANCE hinst, DWORD reason, LPVOID reserv) |
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{ |
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switch (reason) { |
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case DLL_PROCESS_ATTACH: |
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glob_hinst = hinst; |
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break; |
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case DLL_THREAD_ATTACH: |
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break; |
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case DLL_THREAD_DETACH: |
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break; |
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case DLL_PROCESS_DETACH: |
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break; |
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} |
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return TRUE; |
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} |
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