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wine/programs/explorer/systray.c
Zhiyi Zhang 8459a5272a explorer: Use a valid taskbar position when the taskbar is hidden. 
Some applications use FindWindowA() with class Shell_TrayWnd to find the taskbar window on Windows.
Then GetWindowRect() is called to get the taskbar window rectangle. Finally, the taskbar window
rectangle is subtracted from the primary screen rectangle to calculate the work area. Without a
valid taskbar window position, these applications end up getting an incorrect work area and going
down the wrong path. So use the same position and size as the host system panel for explorer taskbar
when it's hidden.
2022-11-17 10:00:24 +01:00

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/*
* Copyright (C) 2004 Mike Hearn, for CodeWeavers
* Copyright (C) 2005 Robert Shearman
* Copyright (C) 2008 Alexandre Julliard
*
* 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
*/
#include <assert.h>
#define NONAMELESSUNION
#include <windows.h>
#include <commctrl.h>
#include <shellapi.h>
#include <wine/debug.h>
#include <wine/list.h>
#include "explorer_private.h"
#include "resource.h"
WINE_DEFAULT_DEBUG_CHANNEL(systray);
struct notify_data /* platform-independent format for NOTIFYICONDATA */
{
LONG hWnd;
UINT uID;
UINT uFlags;
UINT uCallbackMessage;
WCHAR szTip[128];
DWORD dwState;
DWORD dwStateMask;
WCHAR szInfo[256];
union {
UINT uTimeout;
UINT uVersion;
} u;
WCHAR szInfoTitle[64];
DWORD dwInfoFlags;
GUID guidItem;
/* data for the icon bitmap */
UINT width;
UINT height;
UINT planes;
UINT bpp;
};
static int (CDECL *wine_notify_icon)(DWORD,NOTIFYICONDATAW *);
/* 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 tooltip; /* Icon tooltip */
UINT state; /* state flags */
UINT id; /* the unique id given by the app */
UINT callback_message;
int display; /* index in display list, or -1 if hidden */
WCHAR tiptext[128]; /* Tooltip text. If empty => tooltip disabled */
WCHAR info_text[256]; /* info balloon text */
WCHAR info_title[64]; /* info balloon title */
UINT info_flags; /* flags for info balloon */
UINT info_timeout; /* timeout for info balloon */
HICON info_icon; /* info balloon icon */
UINT version; /* notify icon api version */
};
static struct list icon_list = LIST_INIT( icon_list );
struct taskbar_button
{
struct list entry;
HWND hwnd;
HWND button;
BOOL active;
BOOL visible;
};
static struct list taskbar_buttons = LIST_INIT( taskbar_buttons );
static HWND tray_window;
static unsigned int alloc_displayed;
static unsigned int nb_displayed;
static struct icon **displayed; /* array of currently displayed icons */
static BOOL hide_systray, enable_shell;
static int icon_cx, icon_cy, tray_width, tray_height;
static int start_button_width, taskbar_button_width;
static WCHAR start_label[50];
static struct icon *balloon_icon;
static HWND balloon_window;
#define MIN_DISPLAYED 8
#define ICON_BORDER 2
#define BALLOON_CREATE_TIMER 1
#define BALLOON_SHOW_TIMER 2
#define BALLOON_CREATE_TIMEOUT 2000
#define BALLOON_SHOW_MIN_TIMEOUT 10000
#define BALLOON_SHOW_MAX_TIMEOUT 30000
#define WM_POPUPSYSTEMMENU 0x0313
static void do_hide_systray(void);
static void do_show_systray(void);
/* Retrieves icon record by owner window and ID */
static struct icon *get_icon(HWND owner, UINT id)
{
struct icon *this;
/* search for the icon */
LIST_FOR_EACH_ENTRY( this, &icon_list, struct icon, entry )
if ((this->id == id) && (this->owner == owner)) return this;
return NULL;
}
static RECT get_icon_rect( struct icon *icon )
{
RECT rect;
rect.right = tray_width - icon_cx * icon->display;
rect.left = rect.right - icon_cx;
rect.top = (tray_height - icon_cy) / 2;
rect.bottom = rect.top + icon_cy;
return rect;
}
static void init_common_controls(void)
{
static BOOL initialized = FALSE;
if (!initialized)
{
INITCOMMONCONTROLSEX init_tooltip;
init_tooltip.dwSize = sizeof(INITCOMMONCONTROLSEX);
init_tooltip.dwICC = ICC_TAB_CLASSES|ICC_STANDARD_CLASSES;
InitCommonControlsEx(&init_tooltip);
initialized = TRUE;
}
}
/* Creates tooltip window for icon. */
static void create_tooltip(struct icon *icon)
{
TTTOOLINFOW ti;
init_common_controls();
icon->tooltip = CreateWindowExW(WS_EX_TOPMOST, TOOLTIPS_CLASSW, NULL,
WS_POPUP | TTS_ALWAYSTIP,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
tray_window, NULL, NULL, NULL);
ZeroMemory(&ti, sizeof(ti));
ti.cbSize = sizeof(TTTOOLINFOW);
ti.hwnd = tray_window;
ti.lpszText = icon->tiptext;
if (icon->display != -1) ti.rect = get_icon_rect( icon );
SendMessageW(icon->tooltip, TTM_ADDTOOLW, 0, (LPARAM)&ti);
}
static void set_balloon_position( struct icon *icon )
{
RECT rect = get_icon_rect( icon );
POINT pos;
MapWindowPoints( tray_window, 0, (POINT *)&rect, 2 );
pos.x = (rect.left + rect.right) / 2;
pos.y = (rect.top + rect.bottom) / 2;
SendMessageW( balloon_window, TTM_TRACKPOSITION, 0, MAKELONG( pos.x, pos.y ));
}
static void balloon_create_timer(void)
{
TTTOOLINFOW ti;
init_common_controls();
balloon_window = CreateWindowExW( WS_EX_TOPMOST, TOOLTIPS_CLASSW, NULL,
WS_POPUP | TTS_ALWAYSTIP | TTS_NOPREFIX | TTS_BALLOON | TTS_CLOSE,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
tray_window, NULL, NULL, NULL);
memset( &ti, 0, sizeof(ti) );
ti.cbSize = sizeof(TTTOOLINFOW);
ti.hwnd = tray_window;
ti.uFlags = TTF_TRACK;
ti.lpszText = balloon_icon->info_text;
SendMessageW( balloon_window, TTM_ADDTOOLW, 0, (LPARAM)&ti );
if ((balloon_icon->info_flags & NIIF_ICONMASK) == NIIF_USER)
SendMessageW( balloon_window, TTM_SETTITLEW, (WPARAM)balloon_icon->info_icon,
(LPARAM)balloon_icon->info_title );
else
SendMessageW( balloon_window, TTM_SETTITLEW, balloon_icon->info_flags,
(LPARAM)balloon_icon->info_title );
set_balloon_position( balloon_icon );
SendMessageW( balloon_window, TTM_TRACKACTIVATE, TRUE, (LPARAM)&ti );
KillTimer( tray_window, BALLOON_CREATE_TIMER );
SetTimer( tray_window, BALLOON_SHOW_TIMER, balloon_icon->info_timeout, NULL );
}
static BOOL show_balloon( struct icon *icon )
{
if (icon->display == -1) return FALSE; /* not displayed */
if (!icon->info_text[0]) return FALSE; /* no balloon */
balloon_icon = icon;
SetTimer( tray_window, BALLOON_CREATE_TIMER, BALLOON_CREATE_TIMEOUT, NULL );
return TRUE;
}
static void hide_balloon(void)
{
if (!balloon_icon) return;
if (balloon_window)
{
KillTimer( tray_window, BALLOON_SHOW_TIMER );
DestroyWindow( balloon_window );
balloon_window = 0;
}
else KillTimer( tray_window, BALLOON_CREATE_TIMER );
balloon_icon = NULL;
}
static void show_next_balloon(void)
{
struct icon *icon;
LIST_FOR_EACH_ENTRY( icon, &icon_list, struct icon, entry )
if (show_balloon( icon )) break;
}
static void update_balloon( struct icon *icon )
{
if (balloon_icon == icon)
{
hide_balloon();
show_balloon( icon );
}
else if (!balloon_icon)
{
if (!show_balloon( icon )) return;
}
if (!balloon_icon) show_next_balloon();
}
static void balloon_timer(void)
{
if (balloon_icon) balloon_icon->info_text[0] = 0; /* clear text now that balloon has been shown */
hide_balloon();
show_next_balloon();
}
/* Synchronize tooltip text with tooltip window */
static void update_tooltip_text(struct icon *icon)
{
TTTOOLINFOW ti;
ZeroMemory(&ti, sizeof(ti));
ti.cbSize = sizeof(TTTOOLINFOW);
ti.hwnd = tray_window;
ti.lpszText = icon->tiptext;
SendMessageW(icon->tooltip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
}
/* synchronize tooltip position with tooltip window */
static void update_tooltip_position( struct icon *icon )
{
TTTOOLINFOW ti;
ZeroMemory(&ti, sizeof(ti));
ti.cbSize = sizeof(TTTOOLINFOW);
ti.hwnd = tray_window;
if (icon->display != -1) ti.rect = get_icon_rect( icon );
SendMessageW( icon->tooltip, TTM_NEWTOOLRECTW, 0, (LPARAM)&ti );
if (balloon_icon == icon) set_balloon_position( icon );
}
/* find the icon located at a certain point in the tray window */
static struct icon *icon_from_point( int x, int y )
{
if (y < 0 || y >= icon_cy) return NULL;
x = tray_width - x;
if (x < 0 || x >= icon_cx * nb_displayed) return NULL;
return displayed[x / icon_cx];
}
/* invalidate the portion of the tray window that contains the specified icons */
static void invalidate_icons( unsigned int start, unsigned int end )
{
RECT rect;
rect.left = tray_width - (end + 1) * icon_cx;
rect.top = (tray_height - icon_cy) / 2;
rect.right = tray_width - start * icon_cx;
rect.bottom = rect.top + icon_cy;
InvalidateRect( tray_window, &rect, TRUE );
}
/* make an icon visible */
static BOOL show_icon(struct icon *icon)
{
WINE_TRACE("id=0x%x, hwnd=%p\n", icon->id, icon->owner);
if (icon->display != -1) return TRUE; /* already displayed */
if (nb_displayed >= alloc_displayed)
{
unsigned int new_count = max( alloc_displayed * 2, 32 );
struct icon **ptr;
if (displayed) ptr = HeapReAlloc( GetProcessHeap(), 0, displayed, new_count * sizeof(*ptr) );
else ptr = HeapAlloc( GetProcessHeap(), 0, new_count * sizeof(*ptr) );
if (!ptr) return FALSE;
displayed = ptr;
alloc_displayed = new_count;
}
icon->display = nb_displayed;
displayed[nb_displayed++] = icon;
update_tooltip_position( icon );
invalidate_icons( nb_displayed-1, nb_displayed-1 );
if (nb_displayed == 1 && !hide_systray) do_show_systray();
create_tooltip(icon);
update_balloon( icon );
return TRUE;
}
/* make an icon invisible */
static BOOL hide_icon(struct icon *icon)
{
unsigned int i;
WINE_TRACE("id=0x%x, hwnd=%p\n", icon->id, icon->owner);
if (icon->display == -1) return TRUE; /* already hidden */
assert( nb_displayed );
for (i = icon->display; i < nb_displayed - 1; i++)
{
displayed[i] = displayed[i + 1];
displayed[i]->display = i;
update_tooltip_position( displayed[i] );
}
nb_displayed--;
invalidate_icons( icon->display, nb_displayed );
icon->display = -1;
if (!nb_displayed && !enable_shell) do_hide_systray();
update_balloon( icon );
update_tooltip_position( icon );
return TRUE;
}
/* Modifies an existing icon record */
static BOOL modify_icon( struct icon *icon, NOTIFYICONDATAW *nid )
{
WINE_TRACE("id=0x%x, hwnd=%p\n", nid->uID, nid->hWnd);
/* demarshal the request from the NID */
if (!icon)
{
WINE_WARN("Invalid icon ID (0x%x) for HWND %p\n", nid->uID, nid->hWnd);
return FALSE;
}
if (nid->uFlags & NIF_STATE)
{
icon->state = (icon->state & ~nid->dwStateMask) | (nid->dwState & nid->dwStateMask);
}
if (nid->uFlags & NIF_ICON)
{
if (icon->image) DestroyIcon(icon->image);
icon->image = CopyIcon(nid->hIcon);
if (icon->display != -1) invalidate_icons( icon->display, icon->display );
}
if (nid->uFlags & NIF_MESSAGE)
{
icon->callback_message = nid->uCallbackMessage;
}
if (nid->uFlags & NIF_TIP)
{
lstrcpynW( icon->tiptext, nid->szTip, ARRAY_SIZE( icon->tiptext ));
if (icon->display != -1) update_tooltip_text(icon);
}
if (nid->uFlags & NIF_INFO && nid->cbSize >= NOTIFYICONDATAA_V2_SIZE)
{
lstrcpynW( icon->info_text, nid->szInfo, ARRAY_SIZE( icon->info_text ));
lstrcpynW( icon->info_title, nid->szInfoTitle, ARRAY_SIZE( icon->info_title ));
icon->info_flags = nid->dwInfoFlags;
icon->info_timeout = max(min(nid->u.uTimeout, BALLOON_SHOW_MAX_TIMEOUT), BALLOON_SHOW_MIN_TIMEOUT);
icon->info_icon = nid->hBalloonIcon;
update_balloon( icon );
}
if (icon->state & NIS_HIDDEN) hide_icon( icon );
else show_icon( icon );
return TRUE;
}
/* Adds a new icon record to the list */
static BOOL add_icon(NOTIFYICONDATAW *nid)
{
struct icon *icon;
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 FALSE;
}
if (!(icon = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*icon))))
{
WINE_ERR("out of memory\n");
return FALSE;
}
ZeroMemory(icon, sizeof(struct icon));
icon->id = nid->uID;
icon->owner = nid->hWnd;
icon->display = -1;
list_add_tail(&icon_list, &icon->entry);
return modify_icon( icon, nid );
}
/* Deletes tray icon window and icon record */
static BOOL delete_icon(struct icon *icon)
{
hide_icon(icon);
list_remove(&icon->entry);
DestroyIcon(icon->image);
HeapFree(GetProcessHeap(), 0, icon);
return TRUE;
}
/* cleanup icons belonging to a window that has been destroyed */
static void cleanup_systray_window( HWND hwnd )
{
struct icon *icon, *next;
LIST_FOR_EACH_ENTRY_SAFE( icon, next, &icon_list, struct icon, entry )
if (icon->owner == hwnd) delete_icon( icon );
if (wine_notify_icon)
{
NOTIFYICONDATAW nid = { sizeof(nid), hwnd };
wine_notify_icon( 0xdead, &nid );
}
}
/* update the taskbar buttons when something changed */
static void sync_taskbar_buttons(void)
{
struct taskbar_button *win;
int pos = 0, count = 0;
int width = taskbar_button_width;
int right = tray_width - nb_displayed * icon_cx;
HWND foreground = GetAncestor( GetForegroundWindow(), GA_ROOTOWNER );
if (!IsWindowVisible( tray_window )) return;
LIST_FOR_EACH_ENTRY( win, &taskbar_buttons, struct taskbar_button, entry )
{
if (!win->hwnd) /* start button */
{
SetWindowPos( win->button, 0, pos, 0, start_button_width, tray_height,
SWP_NOZORDER | SWP_NOACTIVATE | SWP_SHOWWINDOW );
pos += start_button_width;
continue;
}
win->active = (win->hwnd == foreground);
win->visible = IsWindowVisible( win->hwnd ) && !GetWindow( win->hwnd, GW_OWNER );
if (win->visible) count++;
}
/* shrink buttons if space is tight */
if (count && (count * width > right - pos))
width = max( taskbar_button_width / 4, (right - pos) / count );
LIST_FOR_EACH_ENTRY( win, &taskbar_buttons, struct taskbar_button, entry )
{
if (!win->hwnd) continue; /* start button */
if (win->visible && right - pos >= width)
{
SetWindowPos( win->button, 0, pos, 0, width, tray_height,
SWP_NOZORDER | SWP_NOACTIVATE | SWP_SHOWWINDOW );
InvalidateRect( win->button, NULL, TRUE );
pos += width;
}
else SetWindowPos( win->button, 0, 0, 0, 0, 0, SWP_NOZORDER | SWP_NOACTIVATE | SWP_HIDEWINDOW );
}
}
static BOOL handle_incoming(HWND hwndSource, COPYDATASTRUCT *cds)
{
struct icon *icon = NULL;
const struct notify_data *data;
NOTIFYICONDATAW nid;
int ret = FALSE;
if (cds->cbData < sizeof(*data)) return FALSE;
data = cds->lpData;
nid.cbSize = sizeof(nid);
nid.hWnd = LongToHandle( data->hWnd );
nid.uID = data->uID;
nid.uFlags = data->uFlags;
nid.uCallbackMessage = data->uCallbackMessage;
nid.hIcon = 0;
nid.dwState = data->dwState;
nid.dwStateMask = data->dwStateMask;
nid.u.uTimeout = data->u.uTimeout;
nid.dwInfoFlags = data->dwInfoFlags;
nid.guidItem = data->guidItem;
lstrcpyW( nid.szTip, data->szTip );
lstrcpyW( nid.szInfo, data->szInfo );
lstrcpyW( nid.szInfoTitle, data->szInfoTitle );
nid.hBalloonIcon = 0;
/* FIXME: if statement only needed because we don't support interprocess
* icon handles */
if ((nid.uFlags & NIF_ICON) && cds->cbData > sizeof(*data))
{
LONG cbMaskBits;
LONG cbColourBits;
const char *buffer = (const char *)(data + 1);
cbMaskBits = (data->width * data->height + 15) / 16 * 2;
cbColourBits = (data->planes * data->width * data->height * data->bpp + 15) / 16 * 2;
if (cds->cbData < sizeof(*data) + cbMaskBits + cbColourBits)
{
WINE_ERR("buffer underflow\n");
return FALSE;
}
nid.hIcon = CreateIcon(NULL, data->width, data->height, data->planes, data->bpp,
buffer, buffer + cbMaskBits);
}
/* try forwarding to the display driver first */
if (cds->dwData == NIM_ADD || !(icon = get_icon( nid.hWnd, nid.uID )))
{
if (wine_notify_icon && ((ret = wine_notify_icon( cds->dwData, &nid )) != -1))
{
if (nid.hIcon) DestroyIcon( nid.hIcon );
return ret;
}
ret = FALSE;
}
switch (cds->dwData)
{
case NIM_ADD:
ret = add_icon(&nid);
break;
case NIM_DELETE:
if (icon) ret = delete_icon( icon );
break;
case NIM_MODIFY:
if (icon) ret = modify_icon( icon, &nid );
break;
case NIM_SETVERSION:
if (icon)
{
icon->version = nid.u.uVersion;
ret = TRUE;
}
break;
default:
WINE_FIXME("unhandled tray message: %Id\n", cds->dwData);
break;
}
if (nid.hIcon) DestroyIcon( nid.hIcon );
sync_taskbar_buttons();
return ret;
}
static void add_taskbar_button( HWND hwnd )
{
struct taskbar_button *win;
if (hide_systray) return;
/* ignore our own windows */
if (hwnd)
{
DWORD process;
if (!GetWindowThreadProcessId( hwnd, &process ) || process == GetCurrentProcessId()) return;
}
if (!(win = HeapAlloc( GetProcessHeap(), 0, sizeof(*win) ))) return;
win->hwnd = hwnd;
win->button = CreateWindowW( WC_BUTTONW, NULL, WS_CHILD | BS_OWNERDRAW,
0, 0, 0, 0, tray_window, (HMENU)hwnd, 0, 0 );
list_add_tail( &taskbar_buttons, &win->entry );
}
static struct taskbar_button *find_taskbar_button( HWND hwnd )
{
struct taskbar_button *win;
LIST_FOR_EACH_ENTRY( win, &taskbar_buttons, struct taskbar_button, entry )
if (win->hwnd == hwnd) return win;
return NULL;
}
static void remove_taskbar_button( HWND hwnd )
{
struct taskbar_button *win = find_taskbar_button( hwnd );
if (!win) return;
list_remove( &win->entry );
DestroyWindow( win->button );
HeapFree( GetProcessHeap(), 0, win );
}
static void paint_taskbar_button( const DRAWITEMSTRUCT *dis )
{
RECT rect;
UINT flags = DC_TEXT;
struct taskbar_button *win = find_taskbar_button( LongToHandle( dis->CtlID ));
if (!win) return;
GetClientRect( dis->hwndItem, &rect );
DrawFrameControl( dis->hDC, &rect, DFC_BUTTON, DFCS_BUTTONPUSH | DFCS_ADJUSTRECT |
((dis->itemState & ODS_SELECTED) ? DFCS_PUSHED : 0 ));
if (win->hwnd)
{
flags |= win->active ? DC_ACTIVE : DC_INBUTTON;
DrawCaptionTempW( win->hwnd, dis->hDC, &rect, 0, 0, NULL, flags );
}
else /* start button */
DrawCaptionTempW( 0, dis->hDC, &rect, 0, 0, start_label, flags | DC_INBUTTON | DC_ICON );
}
static void click_taskbar_button( HWND button )
{
LONG_PTR id = GetWindowLongPtrW( button, GWLP_ID );
HWND hwnd = (HWND)id;
if (!hwnd) /* start button */
{
do_startmenu( tray_window );
return;
}
if (IsIconic( hwnd ))
{
SendMessageW( hwnd, WM_SYSCOMMAND, SC_RESTORE, 0 );
return;
}
if (IsWindowEnabled( hwnd ))
{
if (hwnd == GetForegroundWindow())
{
SendMessageW( hwnd, WM_SYSCOMMAND, SC_MINIMIZE, 0 );
return;
}
}
else /* look for an enabled window owned by this one */
{
HWND owned = GetWindow( GetDesktopWindow(), GW_CHILD );
while (owned && owned != hwnd)
{
if (IsWindowVisible( owned ) &&
IsWindowEnabled( owned ) &&
(GetWindow( owned, GW_OWNER ) == hwnd))
break;
owned = GetWindow( owned, GW_HWNDNEXT );
}
hwnd = owned;
}
SetForegroundWindow( hwnd );
}
static void show_taskbar_contextmenu( HWND button, LPARAM lparam )
{
ULONG_PTR id = GetWindowLongPtrW( button, GWLP_ID );
if (id) SendNotifyMessageW( (HWND)id, WM_POPUPSYSTEMMENU, 0, lparam );
}
static void do_hide_systray(void)
{
ShowWindow( tray_window, SW_HIDE );
}
static BOOL notify_owner( struct icon *icon, UINT msg, POINT pt )
{
WPARAM wp = icon->id;
LPARAM lp = msg;
if (icon->version >= NOTIFYICON_VERSION_4)
{
ClientToScreen( tray_window, &pt );
wp = MAKEWPARAM( pt.x, pt.y );
lp = MAKELPARAM( msg, icon->id );
}
TRACE( "relaying 0x%x\n", msg );
if (!SendNotifyMessageW( icon->owner, icon->callback_message, wp, lp ) &&
(GetLastError() == ERROR_INVALID_WINDOW_HANDLE))
{
WARN( "application window was destroyed, removing icon %u\n", icon->id );
delete_icon( icon );
return FALSE;
}
return TRUE;
}
static void do_show_systray(void)
{
SIZE size;
NONCLIENTMETRICSW ncm;
HFONT font;
HDC hdc = GetDC( 0 );
ncm.cbSize = sizeof(NONCLIENTMETRICSW);
SystemParametersInfoW( SPI_GETNONCLIENTMETRICS, sizeof(NONCLIENTMETRICSW), &ncm, 0 );
font = CreateFontIndirectW( &ncm.lfCaptionFont );
/* FIXME: Implement BCM_GETIDEALSIZE and use that instead. */
SelectObject( hdc, font );
GetTextExtentPointA( hdc, "abcdefghijklmnopqrstuvwxyz", 26, &size );
taskbar_button_width = size.cx;
GetTextExtentPointW( hdc, start_label, lstrlenW(start_label), &size );
/* add some margins (FIXME) */
size.cx += 12 + GetSystemMetrics( SM_CXSMICON );
size.cy += 4;
ReleaseDC( 0, hdc );
DeleteObject( font );
tray_width = GetSystemMetrics( SM_CXSCREEN );
tray_height = max( icon_cy, size.cy );
start_button_width = size.cx;
SetWindowPos( tray_window, 0, 0, GetSystemMetrics( SM_CYSCREEN ) - tray_height,
tray_width, tray_height, SWP_NOZORDER | SWP_NOACTIVATE | SWP_SHOWWINDOW );
sync_taskbar_buttons();
}
static LRESULT WINAPI tray_wndproc( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
{
switch (msg)
{
case WM_COPYDATA:
return handle_incoming((HWND)wparam, (COPYDATASTRUCT *)lparam);
case WM_DISPLAYCHANGE:
if (hide_systray || (!nb_displayed && !enable_shell)) do_hide_systray();
else do_show_systray();
break;
case WM_TIMER:
switch (wparam)
{
case BALLOON_CREATE_TIMER: balloon_create_timer(); break;
case BALLOON_SHOW_TIMER: balloon_timer(); break;
}
break;
case WM_PAINT:
{
unsigned int i;
PAINTSTRUCT ps;
HDC hdc;
hdc = BeginPaint( hwnd, &ps );
for (i = 0; i < nb_displayed; i++)
{
RECT dummy, rect = get_icon_rect( displayed[i] );
if (IntersectRect( &dummy, &rect, &ps.rcPaint ))
DrawIconEx( hdc, rect.left + ICON_BORDER, rect.top + ICON_BORDER, displayed[i]->image,
icon_cx - 2*ICON_BORDER, icon_cy - 2*ICON_BORDER,
0, 0, DI_DEFAULTSIZE|DI_NORMAL);
}
EndPaint( hwnd, &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:
{
MSG message;
POINT pt = { (short)LOWORD(lparam), (short)HIWORD(lparam) };
struct icon *icon = icon_from_point( pt.x, pt.y );
if (!icon) break;
message.hwnd = hwnd;
message.message = msg;
message.wParam = wparam;
message.lParam = lparam;
SendMessageW( icon->tooltip, TTM_RELAYEVENT, 0, (LPARAM)&message );
if (!notify_owner( icon, msg, pt )) break;
if (icon->version > 0)
{
switch (msg)
{
case WM_RBUTTONUP:
notify_owner( icon, WM_CONTEXTMENU, pt );
break;
case WM_LBUTTONUP:
notify_owner( icon, NIN_SELECT, pt );
break;
}
}
break;
}
case WM_CLOSE:
/* don't destroy the tray window, just hide it */
ShowWindow( hwnd, SW_HIDE );
return 0;
case WM_DRAWITEM:
paint_taskbar_button( (const DRAWITEMSTRUCT *)lparam );
break;
case WM_COMMAND:
if (HIWORD(wparam) == BN_CLICKED) click_taskbar_button( (HWND)lparam );
break;
case WM_CONTEXTMENU:
show_taskbar_contextmenu( (HWND)wparam, lparam );
break;
case WM_MOUSEACTIVATE:
return MA_NOACTIVATE;
case WM_INITMENUPOPUP:
case WM_MENUCOMMAND:
return menu_wndproc(hwnd, msg, wparam, lparam);
default:
return DefWindowProcW( hwnd, msg, wparam, lparam );
}
return 0;
}
/* notification posted to the desktop window */
void handle_parent_notify( HWND hwnd, WPARAM wp )
{
switch (LOWORD(wp))
{
case WM_CREATE:
add_taskbar_button( hwnd );
break;
case WM_DESTROY:
remove_taskbar_button( hwnd );
cleanup_systray_window( hwnd );
break;
}
sync_taskbar_buttons();
}
/* this function creates the listener window */
void initialize_systray( HMODULE graphics_driver, BOOL using_root, BOOL arg_enable_shell )
{
WNDCLASSEXW class;
static const WCHAR classname[] = {'S','h','e','l','l','_','T','r','a','y','W','n','d',0};
RECT work_rect, primary_rect, taskbar_rect;
if (using_root && graphics_driver) wine_notify_icon = (void *)GetProcAddress( graphics_driver, "wine_notify_icon" );
icon_cx = GetSystemMetrics( SM_CXSMICON ) + 2*ICON_BORDER;
icon_cy = GetSystemMetrics( SM_CYSMICON ) + 2*ICON_BORDER;
hide_systray = using_root;
enable_shell = arg_enable_shell;
/* register the systray listener window class */
ZeroMemory(&class, sizeof(class));
class.cbSize = sizeof(class);
class.style = CS_DBLCLKS | CS_HREDRAW;
class.lpfnWndProc = tray_wndproc;
class.hInstance = NULL;
class.hIcon = LoadIconW(0, (LPCWSTR)IDI_WINLOGO);
class.hCursor = LoadCursorW(0, (LPCWSTR)IDC_ARROW);
class.hbrBackground = (HBRUSH) COLOR_WINDOW;
class.lpszClassName = classname;
if (!RegisterClassExW(&class))
{
WINE_ERR("Could not register SysTray window class\n");
return;
}
SystemParametersInfoW( SPI_GETWORKAREA, 0, &work_rect, 0 );
SetRect( &primary_rect, 0, 0, GetSystemMetrics( SM_CXSCREEN ), GetSystemMetrics( SM_CYSCREEN ) );
SubtractRect( &taskbar_rect, &primary_rect, &work_rect );
tray_window = CreateWindowExW( WS_EX_NOACTIVATE, classname, NULL, WS_POPUP, taskbar_rect.left,
taskbar_rect.top, taskbar_rect.right - taskbar_rect.left,
taskbar_rect.bottom - taskbar_rect.top, 0, 0, 0, 0 );
if (!tray_window)
{
WINE_ERR("Could not create tray window\n");
return;
}
LoadStringW( NULL, IDS_START_LABEL, start_label, ARRAY_SIZE( start_label ));
add_taskbar_button( 0 );
if (hide_systray) do_hide_systray();
else if (enable_shell) do_show_systray();
}
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