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Sweden-Number/programs/explorer/systray.c

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/*
* Copyright (C) 2004 Mike Hearn, for CodeWeavers
* Copyright (C) 2005 Robert Shearman
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
/* There are two types of window involved here. The first is the
* listener window. This is like the taskbar in Windows. It doesn't
* ever appear on-screen in our implementation, instead we create
* individual mini "adaptor" windows which are docked by the native
* systray host.
*
* In future for those who don't have a systray we could make the
* listener window more clever so it can draw itself like the Windows
* tray area does (with a clock and stuff).
*/
#include <assert.h>
#define UNICODE
#define _WIN32_IE 0x500
#include <windows.h>
#include <commctrl.h>
#include <wine/debug.h>
#include <wine/list.h>
#include "explorer_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(systray);
#define IS_OPTION_FALSE(ch) \
((ch) == 'n' || (ch) == 'N' || (ch) == 'f' || (ch) == 'F' || (ch) == '0')
static const WCHAR adaptor_classname[] = /* Adaptor */ {'A','d','a','p','t','o','r',0};
/* tray state */
struct tray
{
HWND window;
struct list icons;
};
/* an individual systray icon, unpacked from the NOTIFYICONDATA and always in unicode */
struct icon
{
struct list entry;
HICON image; /* the image to render */
HWND owner; /* the HWND passed in to the Shell_NotifyIcon call */
HWND window; /* the adaptor window */
HWND tooltip; /* Icon tooltip */
UINT id; /* the unique id given by the app */
UINT callback_message;
};
static struct tray tray;
static BOOL hide_systray;
/* adaptor code */
#define ICON_SIZE GetSystemMetrics(SM_CXSMICON)
/* space around icon (forces icon to center of KDE systray area) */
#define ICON_BORDER 4
static LRESULT WINAPI adaptor_wndproc(HWND window, UINT msg,
WPARAM wparam, LPARAM lparam)
{
struct icon *icon = NULL;
BOOL ret;
WINE_TRACE("hwnd=%p, msg=0x%x\n", window, msg);
/* set the icon data for the window from the data passed into CreateWindow */
if (msg == WM_NCCREATE)
SetWindowLongPtrW(window, GWLP_USERDATA, (LPARAM)((const CREATESTRUCT *)lparam)->lpCreateParams);
icon = (struct icon *) GetWindowLongPtr(window, GWLP_USERDATA);
switch (msg)
{
case WM_PAINT:
{
RECT rc;
int top;
PAINTSTRUCT ps;
HDC hdc;
WINE_TRACE("painting\n");
hdc = BeginPaint(window, &ps);
GetClientRect(window, &rc);
/* calculate top so we can deal with arbitrary sized trays */
top = ((rc.bottom-rc.top)/2) - ((ICON_SIZE)/2);
DrawIconEx(hdc, (ICON_BORDER/2), top, icon->image,
ICON_SIZE, ICON_SIZE, 0, 0, DI_DEFAULTSIZE|DI_NORMAL);
EndPaint(window, &ps);
break;
}
case WM_MOUSEMOVE:
case WM_LBUTTONDOWN:
case WM_LBUTTONUP:
case WM_RBUTTONDOWN:
case WM_RBUTTONUP:
case WM_MBUTTONDOWN:
case WM_MBUTTONUP:
case WM_LBUTTONDBLCLK:
case WM_RBUTTONDBLCLK:
case WM_MBUTTONDBLCLK:
{
/* notify the owner hwnd of the message */
WINE_TRACE("relaying 0x%x\n", msg);
ret = PostMessage(icon->owner, icon->callback_message, (WPARAM) icon->id, (LPARAM) msg);
if (!ret && (GetLastError() == ERROR_INVALID_HANDLE))
{
WINE_WARN("application window was destroyed without removing "
"notification icon, removing automatically\n");
DestroyWindow(window);
}
return 0;
}
case WM_NCDESTROY:
SetWindowLongPtr(window, GWLP_USERDATA, 0);
list_remove(&icon->entry);
DestroyIcon(icon->image);
HeapFree(GetProcessHeap(), 0, icon);
break;
}
return DefWindowProc(window, msg, wparam, lparam);
}
/* listener code */
static struct icon *get_icon(HWND owner, UINT id)
{
struct icon *this;
/* search for the icon */
LIST_FOR_EACH_ENTRY( this, &tray.icons, struct icon, entry )
if ((this->id == id) && (this->owner == owner)) return this;
return NULL;
}
static void set_tooltip(struct icon *icon, WCHAR *szTip, BOOL modify)
{
TTTOOLINFOW ti;
ti.cbSize = sizeof(TTTOOLINFOW);
ti.uFlags = TTF_SUBCLASS | TTF_IDISHWND;
ti.hwnd = icon->window;
ti.hinst = 0;
ti.uId = (UINT_PTR)icon->window;
ti.lpszText = szTip;
ti.lParam = 0;
ti.lpReserved = NULL;
if (modify)
SendMessageW(icon->tooltip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
else
SendMessageW(icon->tooltip, TTM_ADDTOOLW, 0, (LPARAM)&ti);
}
static void modify_icon(NOTIFYICONDATAW *nid, BOOL modify_tooltip)
{
struct icon *icon;
WINE_TRACE("id=0x%x, hwnd=%p\n", nid->uID, nid->hWnd);
/* demarshal the request from the NID */
icon = get_icon(nid->hWnd, nid->uID);
if (!icon)
{
WINE_WARN("Invalid icon ID (0x%x) for HWND %p\n", nid->uID, nid->hWnd);
return;
}
if (nid->uFlags & NIF_ICON)
{
if (icon->image) DestroyIcon(icon->image);
icon->image = CopyIcon(nid->hIcon);
RedrawWindow(icon->window, NULL, NULL, RDW_ERASE | RDW_INVALIDATE | RDW_UPDATENOW);
}
if (nid->uFlags & NIF_MESSAGE)
{
icon->callback_message = nid->uCallbackMessage;
}
if (nid->uFlags & NIF_TIP)
{
set_tooltip(icon, nid->szTip, modify_tooltip);
}
}
static void add_icon(NOTIFYICONDATAW *nid)
{
RECT rect;
struct icon *icon;
static const WCHAR adaptor_windowname[] = /* Wine System Tray Adaptor */ {'W','i','n','e',' ','S','y','s','t','e','m',' ','T','r','a','y',' ','A','d','a','p','t','o','r',0};
static BOOL tooltps_initialized = FALSE;
WINE_TRACE("id=0x%x, hwnd=%p\n", nid->uID, nid->hWnd);
if ((icon = get_icon(nid->hWnd, nid->uID)))
{
WINE_WARN("duplicate tray icon add, buggy app?\n");
return;
}
if (!(icon = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*icon))))
{
WINE_ERR("out of memory\n");
return;
}
icon->id = nid->uID;
icon->owner = nid->hWnd;
icon->image = NULL;
rect.left = 0;
rect.top = 0;
rect.right = GetSystemMetrics(SM_CXSMICON) + ICON_BORDER;
rect.bottom = GetSystemMetrics(SM_CYSMICON) + ICON_BORDER;
AdjustWindowRect(&rect, WS_CLIPSIBLINGS | WS_CAPTION, FALSE);
/* create the adaptor window */
icon->window = CreateWindowEx(WS_EX_TRAYWINDOW, adaptor_classname,
adaptor_windowname,
WS_CLIPSIBLINGS | WS_CAPTION,
CW_USEDEFAULT, CW_USEDEFAULT,
rect.right - rect.left,
rect.bottom - rect.top,
NULL, NULL, NULL, icon);
if (!hide_systray)
ShowWindow(icon->window, SW_SHOWNA);
/* create icon tooltip */
/* Register tooltip classes if this is the first icon */
if (!tooltps_initialized)
{
INITCOMMONCONTROLSEX init_tooltip;
init_tooltip.dwSize = sizeof(INITCOMMONCONTROLSEX);
init_tooltip.dwICC = ICC_TAB_CLASSES;
InitCommonControlsEx(&init_tooltip);
tooltps_initialized = TRUE;
}
icon->tooltip = CreateWindowEx(WS_EX_TOPMOST, TOOLTIPS_CLASS, NULL,
WS_POPUP | TTS_ALWAYSTIP,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
icon->window, NULL, NULL, NULL);
list_add_tail(&tray.icons, &icon->entry);
modify_icon(nid, FALSE);
}
static void delete_icon(const NOTIFYICONDATAW *nid)
{
struct icon *icon = get_icon(nid->hWnd, nid->uID);
WINE_TRACE("id=0x%x, hwnd=%p\n", nid->uID, nid->hWnd);
if (!icon)
{
WINE_ERR("invalid tray icon ID specified: %ud\n", nid->uID);
return;
}
DestroyWindow(icon->tooltip);
DestroyWindow(icon->window);
}
static void handle_incoming(HWND hwndSource, COPYDATASTRUCT *cds)
{
NOTIFYICONDATAW nid;
if (cds->cbData < sizeof(nid)) return;
memcpy(&nid, cds->lpData, sizeof(nid));
/* FIXME: if statement only needed because we don't support interprocess
* icon handles */
if ((nid.uFlags & NIF_ICON) && (cds->cbData >= sizeof(nid) + 2 * sizeof(BITMAP)))
{
LONG cbMaskBits;
LONG cbColourBits;
BITMAP bmMask;
BITMAP bmColour;
const char *buffer = cds->lpData;
buffer += sizeof(nid);
memcpy(&bmMask, buffer, sizeof(bmMask));
buffer += sizeof(bmMask);
memcpy(&bmColour, buffer, sizeof(bmColour));
buffer += sizeof(bmColour);
cbMaskBits = (bmMask.bmPlanes * bmMask.bmWidth * bmMask.bmHeight * bmMask.bmBitsPixel) / 8;
cbColourBits = (bmColour.bmPlanes * bmColour.bmWidth * bmColour.bmHeight * bmColour.bmBitsPixel) / 8;
if (cds->cbData < sizeof(nid) + 2 * sizeof(BITMAP) + cbMaskBits + cbColourBits)
{
WINE_ERR("buffer underflow\n");
return;
}
/* sanity check */
if ((bmColour.bmWidth != bmMask.bmWidth) || (bmColour.bmHeight != bmMask.bmHeight))
{
WINE_ERR("colour and mask bitmaps aren't consistent\n");
return;
}
nid.hIcon = CreateIcon(NULL, bmColour.bmWidth, bmColour.bmHeight,
bmColour.bmPlanes, bmColour.bmBitsPixel,
buffer, buffer + cbMaskBits);
}
switch (cds->dwData)
{
case NIM_ADD:
add_icon(&nid);
break;
case NIM_DELETE:
delete_icon(&nid);
break;
case NIM_MODIFY:
modify_icon(&nid, TRUE);
break;
default:
WINE_FIXME("unhandled tray message: %ld\n", cds->dwData);
break;
}
/* FIXME: if statement only needed because we don't support interprocess
* icon handles */
if (nid.uFlags & NIF_ICON)
DestroyIcon(nid.hIcon);
}
static LRESULT WINAPI listener_wndproc(HWND window, UINT msg,
WPARAM wparam, LPARAM lparam)
{
if (msg == WM_COPYDATA)
handle_incoming((HWND)wparam, (COPYDATASTRUCT *)lparam);
return DefWindowProc(window, msg, wparam, lparam);
}
static BOOL is_systray_hidden(void)
{
const WCHAR show_systray_keyname[] = {'S','o','f','t','w','a','r','e','\\','W','i','n','e','\\',
'X','1','1',' ','D','r','i','v','e','r',0};
const WCHAR show_systray_valuename[] = {'S','h','o','w','S','y','s','t','r','a','y',0};
HKEY hkey;
BOOL ret = FALSE;
/* @@ Wine registry key: HKCU\Software\Wine\X11 Driver */
if (RegOpenKeyW(HKEY_CURRENT_USER, show_systray_keyname, &hkey) == ERROR_SUCCESS)
{
WCHAR value[10];
DWORD type, size = sizeof(value);
if (RegQueryValueExW(hkey, show_systray_valuename, 0, &type, (LPBYTE)&value, &size) == ERROR_SUCCESS)
{
ret = IS_OPTION_FALSE(value[0]);
}
RegCloseKey(hkey);
}
return ret;
}
/* this function creates the the listener window */
void initialize_systray(void)
{
WNDCLASSEX class;
static const WCHAR classname[] = /* Shell_TrayWnd */ {'S','h','e','l','l','_','T','r','a','y','W','n','d',0};
static const WCHAR winname[] = /* Wine Systray Listener */
{'W','i','n','e',' ','S','y','s','t','r','a','y',' ','L','i','s','t','e','n','e','r',0};
WINE_TRACE("initiaizing\n");
hide_systray = is_systray_hidden();
list_init(&tray.icons);
/* register the systray listener window class */
ZeroMemory(&class, sizeof(class));
class.cbSize = sizeof(class);
class.lpfnWndProc = &listener_wndproc;
class.hInstance = NULL;
class.hIcon = LoadIcon(0, IDI_WINLOGO);
class.hCursor = LoadCursor(0, IDC_ARROW);
class.hbrBackground = (HBRUSH) COLOR_WINDOW;
class.lpszClassName = (WCHAR *) &classname;
if (!RegisterClassEx(&class))
{
WINE_ERR("Could not register SysTray window class\n");
return;
}
/* now register the adaptor window class */
ZeroMemory(&class, sizeof(class));
class.cbSize = sizeof(class);
class.lpfnWndProc = adaptor_wndproc;
class.hInstance = NULL;
class.hIcon = LoadIcon(0, IDI_WINLOGO);
class.hCursor = LoadCursor(0, IDC_ARROW);
class.hbrBackground = (HBRUSH) COLOR_WINDOW;
class.lpszClassName = adaptor_classname;
class.style = CS_SAVEBITS | CS_DBLCLKS;
if (!RegisterClassEx(&class))
{
WINE_ERR("Could not register adaptor class\n");
return;
}
tray.window = CreateWindow(classname, winname, WS_OVERLAPPED,
CW_USEDEFAULT, CW_USEDEFAULT,
0, 0, 0, 0, 0, 0);
if (!tray.window)
{
WINE_ERR("Could not create tray window\n");
return;
}
}
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