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reactos/base/shell/explorer/taskswnd.cpp
Katayama Hirofumi MZ 92551f540c
[EXPLORER] Check IsHungAppWindow before minimizing (#7080) 
Reduce system freezing on Win+D.
Normal minimizing causes message
transfer. If the window was hanging,
then it fell into endless message loop.
JIRA issue: CORE-19673
2024-07-07 06:50:46 +09:00

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/*
* ReactOS Explorer
*
* Copyright 2006 - 2007 Thomas Weidenmueller <w3seek@reactos.org>
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "precomp.h"
#include <commoncontrols.h>
/* Set DUMP_TASKS to 1 to enable a dump of the tasks and task groups every
5 seconds */
#define DUMP_TASKS 0
#define DEBUG_SHELL_HOOK 0
#define MAX_TASKS_COUNT (0x7FFF)
#define TASK_ITEM_ARRAY_ALLOC 64
const WCHAR szTaskSwitchWndClass[] = L"MSTaskSwWClass";
const WCHAR szRunningApps[] = L"Running Applications";
#if DEBUG_SHELL_HOOK
const struct {
INT msg;
LPCWSTR msg_name;
} hshell_msg [] = {
{ HSHELL_WINDOWCREATED, L"HSHELL_WINDOWCREATED" },
{ HSHELL_WINDOWDESTROYED, L"HSHELL_WINDOWDESTROYED" },
{ HSHELL_ACTIVATESHELLWINDOW, L"HSHELL_ACTIVATESHELLWINDOW" },
{ HSHELL_WINDOWACTIVATED, L"HSHELL_WINDOWACTIVATED" },
{ HSHELL_GETMINRECT, L"HSHELL_GETMINRECT" },
{ HSHELL_REDRAW, L"HSHELL_REDRAW" },
{ HSHELL_TASKMAN, L"HSHELL_TASKMAN" },
{ HSHELL_LANGUAGE, L"HSHELL_LANGUAGE" },
{ HSHELL_SYSMENU, L"HSHELL_SYSMENU" },
{ HSHELL_ENDTASK, L"HSHELL_ENDTASK" },
{ HSHELL_ACCESSIBILITYSTATE, L"HSHELL_ACCESSIBILITYSTATE" },
{ HSHELL_APPCOMMAND, L"HSHELL_APPCOMMAND" },
{ HSHELL_WINDOWREPLACED, L"HSHELL_WINDOWREPLACED" },
{ HSHELL_WINDOWREPLACING, L"HSHELL_WINDOWREPLACING" },
{ HSHELL_RUDEAPPACTIVATED, L"HSHELL_RUDEAPPACTIVATED" },
};
#endif
typedef struct _TASK_GROUP
{
/* We have to use a linked list instead of an array so we don't have to
update all pointers to groups in the task item array when removing
groups. */
struct _TASK_GROUP *Next;
DWORD dwTaskCount;
DWORD dwProcessId;
INT Index;
union
{
DWORD dwFlags;
struct
{
DWORD IsCollapsed : 1;
};
};
} TASK_GROUP, *PTASK_GROUP;
typedef struct _TASK_ITEM
{
HWND hWnd;
PTASK_GROUP Group;
INT Index;
INT IconIndex;
union
{
DWORD dwFlags;
struct
{
/* IsFlashing is TRUE when the task bar item should be flashing. */
DWORD IsFlashing : 1;
/* RenderFlashed is only TRUE if the task bar item should be
drawn with a flash. */
DWORD RenderFlashed : 1;
};
};
} TASK_ITEM, *PTASK_ITEM;
class CHardErrorThread
{
DWORD m_ThreadId;
HANDLE m_hThread;
LONG m_bThreadRunning;
DWORD m_Status;
DWORD m_dwType;
CStringW m_Title;
CStringW m_Text;
public:
CHardErrorThread():
m_ThreadId(0),
m_hThread(NULL),
m_bThreadRunning(FALSE),
m_Status(NULL),
m_dwType(NULL)
{
}
~CHardErrorThread()
{
if (m_bThreadRunning)
{
/* Try to unstuck Show */
PostThreadMessage(m_ThreadId, WM_QUIT, 0, 0);
DWORD ret = WaitForSingleObject(m_hThread, 3*1000);
if (ret == WAIT_TIMEOUT)
TerminateThread(m_hThread, 0);
CloseHandle(m_hThread);
}
}
HRESULT ThreadProc()
{
HRESULT hr;
CComPtr<IUserNotification> pnotification;
hr = OleInitialize(NULL);
if (FAILED_UNEXPECTEDLY(hr))
return hr;
hr = CoCreateInstance(CLSID_UserNotification,
NULL,
CLSCTX_INPROC_SERVER,
IID_PPV_ARG(IUserNotification, &pnotification));
if (FAILED_UNEXPECTEDLY(hr))
return hr;
hr = pnotification->SetBalloonInfo(m_Title, m_Text, NIIF_WARNING);
if (FAILED_UNEXPECTEDLY(hr))
return hr;
hr = pnotification->SetIconInfo(NULL, NULL);
if (FAILED_UNEXPECTEDLY(hr))
return hr;
/* Show will block until the balloon closes */
hr = pnotification->Show(NULL, 0);
if (FAILED_UNEXPECTEDLY(hr))
return hr;
return S_OK;
}
static DWORD CALLBACK s_HardErrorThreadProc(IN OUT LPVOID lpParameter)
{
CHardErrorThread* pThis = reinterpret_cast<CHardErrorThread*>(lpParameter);
pThis->ThreadProc();
CloseHandle(pThis->m_hThread);
OleUninitialize();
InterlockedExchange(&pThis->m_bThreadRunning, FALSE);
return 0;
}
void StartThread(PBALLOON_HARD_ERROR_DATA pData)
{
BOOL bIsRunning = InterlockedExchange(&m_bThreadRunning, TRUE);
/* Ignore the new message if we are already showing one */
if (bIsRunning)
return;
m_Status = pData->Status;
m_dwType = pData->dwType;
m_Title = (PWCHAR)((ULONG_PTR)pData + pData->TitleOffset);
m_Text = (PWCHAR)((ULONG_PTR)pData + pData->MessageOffset);
m_hThread = CreateThread(NULL, 0, s_HardErrorThreadProc, this, 0, &m_ThreadId);
if (!m_hThread)
{
m_bThreadRunning = FALSE;
CloseHandle(m_hThread);
}
}
};
class CTaskToolbar :
public CWindowImplBaseT< CToolbar<TASK_ITEM>, CControlWinTraits >
{
public:
INT UpdateTbButtonSpacing(IN BOOL bHorizontal, IN BOOL bThemed, IN UINT uiRows = 0, IN UINT uiBtnsPerLine = 0)
{
TBMETRICS tbm;
tbm.cbSize = sizeof(tbm);
tbm.dwMask = TBMF_BARPAD | TBMF_BUTTONSPACING;
tbm.cxBarPad = tbm.cyBarPad = 0;
if (bThemed)
{
tbm.cxButtonSpacing = 0;
tbm.cyButtonSpacing = 0;
}
else
{
if (bHorizontal || uiBtnsPerLine > 1)
tbm.cxButtonSpacing = (3 * GetSystemMetrics(SM_CXEDGE) / 2);
else
tbm.cxButtonSpacing = 0;
if (!bHorizontal || uiRows > 1)
tbm.cyButtonSpacing = (3 * GetSystemMetrics(SM_CYEDGE) / 2);
else
tbm.cyButtonSpacing = 0;
}
SetMetrics(&tbm);
return tbm.cxButtonSpacing;
}
VOID BeginUpdate()
{
SetRedraw(FALSE);
}
VOID EndUpdate()
{
SendMessageW(WM_SETREDRAW, TRUE);
InvalidateRect(NULL, TRUE);
}
BOOL SetButtonCommandId(IN INT iButtonIndex, IN INT iCommandId)
{
TBBUTTONINFO tbbi;
tbbi.cbSize = sizeof(tbbi);
tbbi.dwMask = TBIF_BYINDEX | TBIF_COMMAND;
tbbi.idCommand = iCommandId;
return SetButtonInfo(iButtonIndex, &tbbi) != 0;
}
LRESULT OnNcHitTestToolbar(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
POINT pt;
/* See if the mouse is on a button */
pt.x = GET_X_LPARAM(lParam);
pt.y = GET_Y_LPARAM(lParam);
ScreenToClient(&pt);
INT index = HitTest(&pt);
if (index < 0)
{
/* Make the control appear to be transparent outside of any buttons */
return HTTRANSPARENT;
}
bHandled = FALSE;
return 0;
}
public:
BEGIN_MSG_MAP(CNotifyToolbar)
MESSAGE_HANDLER(WM_NCHITTEST, OnNcHitTestToolbar)
END_MSG_MAP()
BOOL Initialize(HWND hWndParent)
{
DWORD styles = WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN |
TBSTYLE_TOOLTIPS | TBSTYLE_WRAPABLE | TBSTYLE_LIST | TBSTYLE_TRANSPARENT |
CCS_TOP | CCS_NORESIZE | CCS_NODIVIDER;
// HACK & FIXME: CORE-18016
HWND toolbar = CToolbar::Create(hWndParent, styles);
m_hWnd = NULL;
return SubclassWindow(toolbar);
}
};
class CTaskSwitchWnd :
public CComCoClass<CTaskSwitchWnd>,
public CComObjectRootEx<CComMultiThreadModelNoCS>,
public CWindowImpl < CTaskSwitchWnd, CWindow, CControlWinTraits >,
public IOleWindow
{
CTaskToolbar m_TaskBar;
CComPtr<ITrayWindow> m_Tray;
UINT m_ShellHookMsg;
WORD m_TaskItemCount;
WORD m_AllocatedTaskItems;
PTASK_GROUP m_TaskGroups;
PTASK_ITEM m_TaskItems;
PTASK_ITEM m_ActiveTaskItem;
HTHEME m_Theme;
UINT m_ButtonsPerLine;
WORD m_ButtonCount;
HIMAGELIST m_ImageList;
BOOL m_IsGroupingEnabled;
BOOL m_IsDestroying;
SIZE m_ButtonSize;
UINT m_uHardErrorMsg;
CHardErrorThread m_HardErrorThread;
public:
CTaskSwitchWnd() :
m_ShellHookMsg(NULL),
m_TaskItemCount(0),
m_AllocatedTaskItems(0),
m_TaskGroups(NULL),
m_TaskItems(NULL),
m_ActiveTaskItem(NULL),
m_Theme(NULL),
m_ButtonsPerLine(0),
m_ButtonCount(0),
m_ImageList(NULL),
m_IsGroupingEnabled(FALSE),
m_IsDestroying(FALSE)
{
ZeroMemory(&m_ButtonSize, sizeof(m_ButtonSize));
m_uHardErrorMsg = RegisterWindowMessageW(L"HardError");
}
virtual ~CTaskSwitchWnd() { }
INT GetWndTextFromTaskItem(IN PTASK_ITEM TaskItem, LPWSTR szBuf, DWORD cchBuf)
{
/* Get the window text without sending a message so we don't hang if an
application isn't responding! */
return InternalGetWindowText(TaskItem->hWnd, szBuf, cchBuf);
}
#if DUMP_TASKS != 0
VOID DumpTasks()
{
PTASK_GROUP CurrentGroup;
PTASK_ITEM CurrentTaskItem, LastTaskItem;
TRACE("Tasks dump:\n");
if (m_IsGroupingEnabled)
{
CurrentGroup = m_TaskGroups;
while (CurrentGroup != NULL)
{
TRACE("- Group PID: 0x%p Tasks: %d Index: %d\n", CurrentGroup->dwProcessId, CurrentGroup->dwTaskCount, CurrentGroup->Index);
CurrentTaskItem = m_TaskItems;
LastTaskItem = CurrentTaskItem + m_TaskItemCount;
while (CurrentTaskItem != LastTaskItem)
{
if (CurrentTaskItem->Group == CurrentGroup)
{
TRACE(" + Task hwnd: 0x%p Index: %d\n", CurrentTaskItem->hWnd, CurrentTaskItem->Index);
}
CurrentTaskItem++;
}
CurrentGroup = CurrentGroup->Next;
}
CurrentTaskItem = m_TaskItems;
LastTaskItem = CurrentTaskItem + m_TaskItemCount;
while (CurrentTaskItem != LastTaskItem)
{
if (CurrentTaskItem->Group == NULL)
{
TRACE("- Task hwnd: 0x%p Index: %d\n", CurrentTaskItem->hWnd, CurrentTaskItem->Index);
}
CurrentTaskItem++;
}
}
else
{
CurrentTaskItem = m_TaskItems;
LastTaskItem = CurrentTaskItem + m_TaskItemCount;
while (CurrentTaskItem != LastTaskItem)
{
TRACE("- Task hwnd: 0x%p Index: %d\n", CurrentTaskItem->hWnd, CurrentTaskItem->Index);
CurrentTaskItem++;
}
}
}
#endif
VOID UpdateIndexesAfter(IN INT iIndex, BOOL bInserted)
{
PTASK_GROUP CurrentGroup;
PTASK_ITEM CurrentTaskItem, LastTaskItem;
INT NewIndex;
int offset = bInserted ? +1 : -1;
if (m_IsGroupingEnabled)
{
/* Update all affected groups */
CurrentGroup = m_TaskGroups;
while (CurrentGroup != NULL)
{
if (CurrentGroup->IsCollapsed &&
CurrentGroup->Index >= iIndex)
{
/* Update the toolbar buttons */
NewIndex = CurrentGroup->Index + offset;
if (m_TaskBar.SetButtonCommandId(CurrentGroup->Index + offset, NewIndex))
{
CurrentGroup->Index = NewIndex;
}
else
CurrentGroup->Index = -1;
}
CurrentGroup = CurrentGroup->Next;
}
}
/* Update all affected task items */
CurrentTaskItem = m_TaskItems;
LastTaskItem = CurrentTaskItem + m_TaskItemCount;
while (CurrentTaskItem != LastTaskItem)
{
CurrentGroup = CurrentTaskItem->Group;
if (CurrentGroup != NULL)
{
if (!CurrentGroup->IsCollapsed &&
CurrentTaskItem->Index >= iIndex)
{
goto UpdateTaskItemBtn;
}
}
else if (CurrentTaskItem->Index >= iIndex)
{
UpdateTaskItemBtn:
/* Update the toolbar buttons */
NewIndex = CurrentTaskItem->Index + offset;
if (m_TaskBar.SetButtonCommandId(CurrentTaskItem->Index + offset, NewIndex))
{
CurrentTaskItem->Index = NewIndex;
}
else
CurrentTaskItem->Index = -1;
}
CurrentTaskItem++;
}
}
INT UpdateTaskGroupButton(IN PTASK_GROUP TaskGroup)
{
ASSERT(TaskGroup->Index >= 0);
/* FIXME: Implement */
return TaskGroup->Index;
}
VOID ExpandTaskGroup(IN PTASK_GROUP TaskGroup)
{
ASSERT(TaskGroup->dwTaskCount > 0);
ASSERT(TaskGroup->IsCollapsed);
ASSERT(TaskGroup->Index >= 0);
/* FIXME: Implement */
}
HICON GetWndIcon(HWND hwnd)
{
HICON hIcon = NULL;
/* Retrieve icon by sending a message */
#define GET_ICON(type) \
SendMessageTimeout(hwnd, WM_GETICON, (type), 0, SMTO_NOTIMEOUTIFNOTHUNG, 100, (PDWORD_PTR)&hIcon)
LRESULT bAlive = GET_ICON(g_TaskbarSettings.bSmallIcons ? ICON_SMALL2 : ICON_BIG);
if (hIcon)
return hIcon;
if (bAlive)
{
bAlive = GET_ICON(ICON_SMALL);
if (hIcon)
return hIcon;
}
if (bAlive)
{
GET_ICON(g_TaskbarSettings.bSmallIcons ? ICON_BIG : ICON_SMALL2);
if (hIcon)
return hIcon;
}
#undef GET_ICON
/* If we failed, retrieve icon from the window class */
hIcon = (HICON)GetClassLongPtr(hwnd, g_TaskbarSettings.bSmallIcons ? GCLP_HICONSM : GCLP_HICON);
if (hIcon)
return hIcon;
return (HICON)GetClassLongPtr(hwnd, g_TaskbarSettings.bSmallIcons ? GCLP_HICON : GCLP_HICONSM);
}
INT UpdateTaskItemButton(IN PTASK_ITEM TaskItem)
{
TBBUTTONINFO tbbi = { 0 };
HICON icon;
WCHAR windowText[255];
ASSERT(TaskItem->Index >= 0);
tbbi.cbSize = sizeof(tbbi);
tbbi.dwMask = TBIF_BYINDEX | TBIF_STATE | TBIF_TEXT | TBIF_IMAGE;
tbbi.fsState = TBSTATE_ENABLED;
if (m_ActiveTaskItem == TaskItem)
tbbi.fsState |= TBSTATE_CHECKED;
if (TaskItem->RenderFlashed)
tbbi.fsState |= TBSTATE_MARKED;
/* Check if we're updating a button that is the last one in the
line. If so, we need to set the TBSTATE_WRAP flag! */
if (!m_Tray->IsHorizontal() || (m_ButtonsPerLine != 0 &&
(TaskItem->Index + 1) % m_ButtonsPerLine == 0))
{
tbbi.fsState |= TBSTATE_WRAP;
}
if (GetWndTextFromTaskItem(TaskItem, windowText, _countof(windowText)) > 0)
{
tbbi.pszText = windowText;
}
icon = GetWndIcon(TaskItem->hWnd);
if (!icon)
icon = static_cast<HICON>(LoadImageW(NULL, MAKEINTRESOURCEW(OIC_SAMPLE), IMAGE_ICON, 0, 0, LR_SHARED | LR_DEFAULTSIZE));
TaskItem->IconIndex = ImageList_ReplaceIcon(m_ImageList, TaskItem->IconIndex, icon);
tbbi.iImage = TaskItem->IconIndex;
if (!m_TaskBar.SetButtonInfo(TaskItem->Index, &tbbi))
{
TaskItem->Index = -1;
return -1;
}
TRACE("Updated button %d for hwnd 0x%p\n", TaskItem->Index, TaskItem->hWnd);
return TaskItem->Index;
}
VOID RemoveIcon(IN PTASK_ITEM TaskItem)
{
TBBUTTONINFO tbbi;
PTASK_ITEM currentTaskItem, LastItem;
if (TaskItem->IconIndex == -1)
return;
tbbi.cbSize = sizeof(tbbi);
tbbi.dwMask = TBIF_IMAGE;
currentTaskItem = m_TaskItems;
LastItem = currentTaskItem + m_TaskItemCount;
while (currentTaskItem != LastItem)
{
if (currentTaskItem->IconIndex > TaskItem->IconIndex)
{
currentTaskItem->IconIndex--;
tbbi.iImage = currentTaskItem->IconIndex;
m_TaskBar.SetButtonInfo(currentTaskItem->Index, &tbbi);
}
currentTaskItem++;
}
ImageList_Remove(m_ImageList, TaskItem->IconIndex);
}
PTASK_ITEM FindLastTaskItemOfGroup(
IN PTASK_GROUP TaskGroup OPTIONAL,
IN PTASK_ITEM NewTaskItem OPTIONAL)
{
PTASK_ITEM TaskItem, LastTaskItem, FoundTaskItem = NULL;
DWORD dwTaskCount;
ASSERT(m_IsGroupingEnabled);
TaskItem = m_TaskItems;
LastTaskItem = TaskItem + m_TaskItemCount;
dwTaskCount = (TaskGroup != NULL ? TaskGroup->dwTaskCount : MAX_TASKS_COUNT);
ASSERT(dwTaskCount > 0);
while (TaskItem != LastTaskItem)
{
if (TaskItem->Group == TaskGroup)
{
if ((NewTaskItem != NULL && TaskItem != NewTaskItem) || NewTaskItem == NULL)
{
FoundTaskItem = TaskItem;
}
if (--dwTaskCount == 0)
{
/* We found the last task item in the group! */
break;
}
}
TaskItem++;
}
return FoundTaskItem;
}
INT CalculateTaskItemNewButtonIndex(IN PTASK_ITEM TaskItem)
{
PTASK_GROUP TaskGroup;
PTASK_ITEM LastTaskItem;
/* NOTE: This routine assumes that the group is *not* collapsed! */
TaskGroup = TaskItem->Group;
if (m_IsGroupingEnabled)
{
if (TaskGroup != NULL)
{
ASSERT(TaskGroup->Index < 0);
ASSERT(!TaskGroup->IsCollapsed);
if (TaskGroup->dwTaskCount > 1)
{
LastTaskItem = FindLastTaskItemOfGroup(TaskGroup, TaskItem);
if (LastTaskItem != NULL)
{
/* Since the group is expanded the task items must have an index */
ASSERT(LastTaskItem->Index >= 0);
return LastTaskItem->Index + 1;
}
}
}
else
{
/* Find the last NULL group button. NULL groups are added at the end of the
task item list when grouping is enabled */
LastTaskItem = FindLastTaskItemOfGroup(NULL, TaskItem);
if (LastTaskItem != NULL)
{
ASSERT(LastTaskItem->Index >= 0);
return LastTaskItem->Index + 1;
}
}
}
return m_ButtonCount;
}
INT AddTaskItemButton(IN OUT PTASK_ITEM TaskItem)
{
WCHAR windowText[255];
TBBUTTON tbBtn = { 0 };
INT iIndex;
HICON icon;
if (TaskItem->Index >= 0)
{
return UpdateTaskItemButton(TaskItem);
}
if (TaskItem->Group != NULL &&
TaskItem->Group->IsCollapsed)
{
/* The task group is collapsed, we only need to update the group button */
return UpdateTaskGroupButton(TaskItem->Group);
}
icon = GetWndIcon(TaskItem->hWnd);
if (!icon)
icon = static_cast<HICON>(LoadImageW(NULL, MAKEINTRESOURCEW(OIC_SAMPLE), IMAGE_ICON, 0, 0, LR_SHARED | LR_DEFAULTSIZE));
TaskItem->IconIndex = ImageList_ReplaceIcon(m_ImageList, -1, icon);
tbBtn.iBitmap = TaskItem->IconIndex;
tbBtn.fsState = TBSTATE_ENABLED | TBSTATE_ELLIPSES;
tbBtn.fsStyle = BTNS_CHECK | BTNS_NOPREFIX | BTNS_SHOWTEXT;
tbBtn.dwData = TaskItem->Index;
if (GetWndTextFromTaskItem(TaskItem, windowText, _countof(windowText)) > 0)
{
tbBtn.iString = (DWORD_PTR) windowText;
}
/* Find out where to insert the new button */
iIndex = CalculateTaskItemNewButtonIndex(TaskItem);
ASSERT(iIndex >= 0);
tbBtn.idCommand = iIndex;
m_TaskBar.BeginUpdate();
if (m_TaskBar.InsertButton(iIndex, &tbBtn))
{
UpdateIndexesAfter(iIndex, TRUE);
TRACE("Added button %d for hwnd 0x%p\n", iIndex, TaskItem->hWnd);
TaskItem->Index = iIndex;
m_ButtonCount++;
/* Update button sizes and fix the button wrapping */
UpdateButtonsSize(TRUE);
return iIndex;
}
m_TaskBar.EndUpdate();
return -1;
}
BOOL DeleteTaskItemButton(IN OUT PTASK_ITEM TaskItem)
{
PTASK_GROUP TaskGroup;
INT iIndex;
TaskGroup = TaskItem->Group;
if (TaskItem->Index >= 0)
{
if ((TaskGroup != NULL && !TaskGroup->IsCollapsed) ||
TaskGroup == NULL)
{
m_TaskBar.BeginUpdate();
RemoveIcon(TaskItem);
iIndex = TaskItem->Index;
if (m_TaskBar.DeleteButton(iIndex))
{
TaskItem->Index = -1;
m_ButtonCount--;
UpdateIndexesAfter(iIndex, FALSE);
/* Update button sizes and fix the button wrapping */
UpdateButtonsSize(TRUE);
return TRUE;
}
m_TaskBar.EndUpdate();
}
}
return FALSE;
}
PTASK_GROUP AddToTaskGroup(IN HWND hWnd)
{
DWORD dwProcessId;
PTASK_GROUP TaskGroup, *PrevLink;
if (!GetWindowThreadProcessId(hWnd,
&dwProcessId))
{
TRACE("Cannot get process id of hwnd 0x%p\n", hWnd);
return NULL;
}
/* Try to find an existing task group */
TaskGroup = m_TaskGroups;
PrevLink = &m_TaskGroups;
while (TaskGroup != NULL)
{
if (TaskGroup->dwProcessId == dwProcessId)
{
TaskGroup->dwTaskCount++;
return TaskGroup;
}
PrevLink = &TaskGroup->Next;
TaskGroup = TaskGroup->Next;
}
/* Allocate a new task group */
TaskGroup = (PTASK_GROUP) HeapAlloc(hProcessHeap,
HEAP_ZERO_MEMORY,
sizeof(*TaskGroup));
if (TaskGroup != NULL)
{
TaskGroup->dwTaskCount = 1;
TaskGroup->dwProcessId = dwProcessId;
TaskGroup->Index = -1;
/* Add the task group to the list */
*PrevLink = TaskGroup;
}
return TaskGroup;
}
VOID RemoveTaskFromTaskGroup(IN OUT PTASK_ITEM TaskItem)
{
PTASK_GROUP TaskGroup, CurrentGroup, *PrevLink;
TaskGroup = TaskItem->Group;
if (TaskGroup != NULL)
{
DWORD dwNewTaskCount = --TaskGroup->dwTaskCount;
if (dwNewTaskCount == 0)
{
/* Find the previous pointer in the chain */
CurrentGroup = m_TaskGroups;
PrevLink = &m_TaskGroups;
while (CurrentGroup != TaskGroup)
{
PrevLink = &CurrentGroup->Next;
CurrentGroup = CurrentGroup->Next;
}
/* Remove the group from the list */
ASSERT(TaskGroup == CurrentGroup);
*PrevLink = TaskGroup->Next;
/* Free the task group */
HeapFree(hProcessHeap,
0,
TaskGroup);
}
else if (TaskGroup->IsCollapsed &&
TaskGroup->Index >= 0)
{
if (dwNewTaskCount > 1)
{
/* FIXME: Check if we should expand the group */
/* Update the task group button */
UpdateTaskGroupButton(TaskGroup);
}
else
{
/* Expand the group of one task button to a task button */
ExpandTaskGroup(TaskGroup);
}
}
}
}
PTASK_ITEM FindTaskItem(IN HWND hWnd)
{
PTASK_ITEM TaskItem, LastItem;
TaskItem = m_TaskItems;
LastItem = TaskItem + m_TaskItemCount;
while (TaskItem != LastItem)
{
if (TaskItem->hWnd == hWnd)
return TaskItem;
TaskItem++;
}
return NULL;
}
PTASK_ITEM FindOtherTaskItem(IN HWND hWnd)
{
PTASK_ITEM LastItem, TaskItem;
PTASK_GROUP TaskGroup;
DWORD dwProcessId;
if (!GetWindowThreadProcessId(hWnd, &dwProcessId))
{
return NULL;
}
/* Try to find another task that belongs to the same
process as the given window */
TaskItem = m_TaskItems;
LastItem = TaskItem + m_TaskItemCount;
while (TaskItem != LastItem)
{
TaskGroup = TaskItem->Group;
if (TaskGroup != NULL)
{
if (TaskGroup->dwProcessId == dwProcessId)
return TaskItem;
}
else
{
DWORD dwProcessIdTask;
if (GetWindowThreadProcessId(TaskItem->hWnd,
&dwProcessIdTask) &&
dwProcessIdTask == dwProcessId)
{
return TaskItem;
}
}
TaskItem++;
}
return NULL;
}
PTASK_ITEM AllocTaskItem()
{
if (m_TaskItemCount >= MAX_TASKS_COUNT)
{
/* We need the most significant bit in 16 bit command IDs to indicate whether it
is a task group or task item. WM_COMMAND limits command IDs to 16 bits! */
return NULL;
}
ASSERT(m_AllocatedTaskItems >= m_TaskItemCount);
if (m_TaskItemCount == 0)
{
m_TaskItems = (PTASK_ITEM) HeapAlloc(hProcessHeap,
0,
TASK_ITEM_ARRAY_ALLOC * sizeof(*m_TaskItems));
if (m_TaskItems != NULL)
{
m_AllocatedTaskItems = TASK_ITEM_ARRAY_ALLOC;
}
else
return NULL;
}
else if (m_TaskItemCount >= m_AllocatedTaskItems)
{
PTASK_ITEM NewArray;
SIZE_T NewArrayLength, ActiveTaskItemIndex;
NewArrayLength = m_AllocatedTaskItems + TASK_ITEM_ARRAY_ALLOC;
NewArray = (PTASK_ITEM) HeapReAlloc(hProcessHeap,
0,
m_TaskItems,
NewArrayLength * sizeof(*m_TaskItems));
if (NewArray != NULL)
{
if (m_ActiveTaskItem != NULL)
{
/* Fixup the ActiveTaskItem pointer */
ActiveTaskItemIndex = m_ActiveTaskItem - m_TaskItems;
m_ActiveTaskItem = NewArray + ActiveTaskItemIndex;
}
m_AllocatedTaskItems = (WORD) NewArrayLength;
m_TaskItems = NewArray;
}
else
return NULL;
}
return m_TaskItems + m_TaskItemCount++;
}
VOID FreeTaskItem(IN OUT PTASK_ITEM TaskItem)
{
WORD wIndex;
if (TaskItem == m_ActiveTaskItem)
m_ActiveTaskItem = NULL;
wIndex = (WORD) (TaskItem - m_TaskItems);
if (wIndex + 1 < m_TaskItemCount)
{
MoveMemory(TaskItem,
TaskItem + 1,
(m_TaskItemCount - wIndex - 1) * sizeof(*TaskItem));
}
m_TaskItemCount--;
}
VOID DeleteTaskItem(IN OUT PTASK_ITEM TaskItem)
{
if (!m_IsDestroying)
{
/* Delete the task button from the toolbar */
DeleteTaskItemButton(TaskItem);
}
/* Remove the task from it's group */
RemoveTaskFromTaskGroup(TaskItem);
/* Free the task item */
FreeTaskItem(TaskItem);
}
VOID CheckActivateTaskItem(IN OUT PTASK_ITEM TaskItem)
{
PTASK_ITEM CurrentTaskItem;
PTASK_GROUP TaskGroup = NULL;
CurrentTaskItem = m_ActiveTaskItem;
if (TaskItem != NULL)
TaskGroup = TaskItem->Group;
if (m_IsGroupingEnabled &&
TaskGroup != NULL &&
TaskGroup->IsCollapsed)
{
/* FIXME */
return;
}
if (CurrentTaskItem != NULL)
{
PTASK_GROUP CurrentTaskGroup;
if (CurrentTaskItem == TaskItem)
return;
CurrentTaskGroup = CurrentTaskItem->Group;
if (m_IsGroupingEnabled &&
CurrentTaskGroup != NULL &&
CurrentTaskGroup->IsCollapsed)
{
if (CurrentTaskGroup == TaskGroup)
return;
/* FIXME */
}
else
{
m_ActiveTaskItem = NULL;
if (CurrentTaskItem->Index >= 0)
{
UpdateTaskItemButton(CurrentTaskItem);
}
}
}
m_ActiveTaskItem = TaskItem;
if (TaskItem != NULL && TaskItem->Index >= 0)
{
UpdateTaskItemButton(TaskItem);
}
else if (TaskItem == NULL)
{
TRACE("Active TaskItem now NULL\n");
}
}
PTASK_ITEM FindTaskItemByIndex(IN INT Index)
{
PTASK_ITEM TaskItem, LastItem;
TaskItem = m_TaskItems;
LastItem = TaskItem + m_TaskItemCount;
while (TaskItem != LastItem)
{
if (TaskItem->Index == Index)
return TaskItem;
TaskItem++;
}
return NULL;
}
PTASK_GROUP FindTaskGroupByIndex(IN INT Index)
{
PTASK_GROUP CurrentGroup;
CurrentGroup = m_TaskGroups;
while (CurrentGroup != NULL)
{
if (CurrentGroup->Index == Index)
break;
CurrentGroup = CurrentGroup->Next;
}
return CurrentGroup;
}
BOOL AddTask(IN HWND hWnd)
{
PTASK_ITEM TaskItem;
if (!::IsWindow(hWnd) || m_Tray->IsSpecialHWND(hWnd))
return FALSE;
TaskItem = FindTaskItem(hWnd);
if (TaskItem == NULL)
{
TRACE("Add window 0x%p\n", hWnd);
TaskItem = AllocTaskItem();
if (TaskItem != NULL)
{
ZeroMemory(TaskItem, sizeof(*TaskItem));
TaskItem->hWnd = hWnd;
TaskItem->Index = -1;
TaskItem->Group = AddToTaskGroup(hWnd);
if (!m_IsDestroying)
{
AddTaskItemButton(TaskItem);
}
}
}
return TaskItem != NULL;
}
BOOL ActivateTaskItem(IN OUT PTASK_ITEM TaskItem OPTIONAL)
{
if (TaskItem != NULL)
{
TRACE("Activate window 0x%p on button %d\n", TaskItem->hWnd, TaskItem->Index);
}
CheckActivateTaskItem(TaskItem);
return FALSE;
}
BOOL ActivateTask(IN HWND hWnd)
{
PTASK_ITEM TaskItem;
if (!hWnd)
{
return ActivateTaskItem(NULL);
}
TaskItem = FindTaskItem(hWnd);
if (TaskItem == NULL)
{
TaskItem = FindOtherTaskItem(hWnd);
}
if (TaskItem == NULL)
{
WARN("Activate window 0x%p, could not find task\n", hWnd);
RefreshWindowList();
}
return ActivateTaskItem(TaskItem);
}
BOOL DeleteTask(IN HWND hWnd)
{
PTASK_ITEM TaskItem;
TaskItem = FindTaskItem(hWnd);
if (TaskItem != NULL)
{
TRACE("Delete window 0x%p on button %d\n", hWnd, TaskItem->Index);
DeleteTaskItem(TaskItem);
return TRUE;
}
//else
//TRACE("Failed to delete window 0x%p\n", hWnd);
return FALSE;
}
VOID DeleteAllTasks()
{
PTASK_ITEM CurrentTask;
if (m_TaskItemCount > 0)
{
CurrentTask = m_TaskItems + m_TaskItemCount;
do
{
DeleteTaskItem(--CurrentTask);
} while (CurrentTask != m_TaskItems);
}
}
VOID FlashTaskItem(IN OUT PTASK_ITEM TaskItem)
{
TaskItem->RenderFlashed = 1;
UpdateTaskItemButton(TaskItem);
}
BOOL FlashTask(IN HWND hWnd)
{
PTASK_ITEM TaskItem;
TaskItem = FindTaskItem(hWnd);
if (TaskItem != NULL)
{
TRACE("Flashing window 0x%p on button %d\n", hWnd, TaskItem->Index);
FlashTaskItem(TaskItem);
return TRUE;
}
return FALSE;
}
VOID RedrawTaskItem(IN OUT PTASK_ITEM TaskItem)
{
PTASK_GROUP TaskGroup;
TaskGroup = TaskItem->Group;
if (m_IsGroupingEnabled && TaskGroup != NULL)
{
if (TaskGroup->IsCollapsed && TaskGroup->Index >= 0)
{
UpdateTaskGroupButton(TaskGroup);
}
else if (TaskItem->Index >= 0)
{
goto UpdateTaskItem;
}
}
else if (TaskItem->Index >= 0)
{
UpdateTaskItem:
TaskItem->RenderFlashed = 0;
UpdateTaskItemButton(TaskItem);
}
}
BOOL RedrawTask(IN HWND hWnd)
{
PTASK_ITEM TaskItem;
TaskItem = FindTaskItem(hWnd);
if (TaskItem != NULL)
{
RedrawTaskItem(TaskItem);
return TRUE;
}
return FALSE;
}
VOID UpdateButtonsSize(IN BOOL bRedrawDisabled)
{
RECT rcClient;
UINT uiRows, uiMax, uiMin, uiBtnsPerLine, ui;
LONG NewBtnSize;
BOOL Horizontal;
/* Update the size of the image list if needed */
int cx, cy;
ImageList_GetIconSize(m_ImageList, &cx, &cy);
if (cx != GetSystemMetrics(g_TaskbarSettings.bSmallIcons ? SM_CXSMICON : SM_CXICON) ||
cy != GetSystemMetrics(g_TaskbarSettings.bSmallIcons ? SM_CYSMICON : SM_CYICON))
{
ImageList_SetIconSize(m_ImageList,
GetSystemMetrics(g_TaskbarSettings.bSmallIcons ? SM_CXSMICON : SM_CXICON),
GetSystemMetrics(g_TaskbarSettings.bSmallIcons ? SM_CYSMICON : SM_CYICON));
/* SetIconSize removes all icons so we have to reinsert them */
PTASK_ITEM TaskItem = m_TaskItems;
PTASK_ITEM LastTaskItem = m_TaskItems + m_TaskItemCount;
while (TaskItem != LastTaskItem)
{
TaskItem->IconIndex = -1;
UpdateTaskItemButton(TaskItem);
TaskItem++;
}
m_TaskBar.SetImageList(m_ImageList);
}
if (GetClientRect(&rcClient) && !IsRectEmpty(&rcClient))
{
if (m_ButtonCount > 0)
{
Horizontal = m_Tray->IsHorizontal();
if (Horizontal)
{
TBMETRICS tbm = { 0 };
tbm.cbSize = sizeof(tbm);
tbm.dwMask = TBMF_BUTTONSPACING;
m_TaskBar.GetMetrics(&tbm);
if (m_ButtonSize.cy + tbm.cyButtonSpacing != 0)
uiRows = (rcClient.bottom + tbm.cyButtonSpacing) / (m_ButtonSize.cy + tbm.cyButtonSpacing);
else
uiRows = 1;
if (uiRows == 0)
uiRows = 1;
uiBtnsPerLine = (m_ButtonCount + uiRows - 1) / uiRows;
}
else
{
uiBtnsPerLine = 1;
uiRows = m_ButtonCount;
}
if (!bRedrawDisabled)
m_TaskBar.BeginUpdate();
/* We might need to update the button spacing */
int cxButtonSpacing = m_TaskBar.UpdateTbButtonSpacing(
Horizontal, m_Theme != NULL,
uiRows, uiBtnsPerLine);
/* Determine the minimum and maximum width of a button */
uiMin = GetSystemMetrics(SM_CXSIZE) + (2 * GetSystemMetrics(SM_CXEDGE));
if (Horizontal)
{
uiMax = GetSystemMetrics(SM_CXMINIMIZED);
/* Calculate the ideal width and make sure it's within the allowed range */
NewBtnSize = (rcClient.right - (uiBtnsPerLine * cxButtonSpacing)) / uiBtnsPerLine;
if (NewBtnSize < (LONG) uiMin)
NewBtnSize = uiMin;
if (NewBtnSize >(LONG)uiMax)
NewBtnSize = uiMax;
/* Recalculate how many buttons actually fit into one line */
uiBtnsPerLine = rcClient.right / (NewBtnSize + cxButtonSpacing);
if (uiBtnsPerLine == 0)
uiBtnsPerLine++;
}
else
{
NewBtnSize = uiMax = rcClient.right;
}
m_ButtonSize.cx = NewBtnSize;
m_ButtonsPerLine = uiBtnsPerLine;
for (ui = 0; ui != m_ButtonCount; ui++)
{
TBBUTTONINFOW tbbi = { 0 };
tbbi.cbSize = sizeof(tbbi);
tbbi.dwMask = TBIF_BYINDEX | TBIF_SIZE | TBIF_STATE;
tbbi.cx = (INT) NewBtnSize;
tbbi.fsState = TBSTATE_ENABLED;
/* Check if we're updating a button that is the last one in the
line. If so, we need to set the TBSTATE_WRAP flag! */
if (Horizontal)
{
if ((ui + 1) % uiBtnsPerLine == 0)
tbbi.fsState |= TBSTATE_WRAP;
}
else
{
tbbi.fsState |= TBSTATE_WRAP;
}
if (m_ActiveTaskItem != NULL &&
m_ActiveTaskItem->Index == (INT)ui)
{
tbbi.fsState |= TBSTATE_CHECKED;
}
m_TaskBar.SetButtonInfo(ui, &tbbi);
}
}
else
{
m_ButtonsPerLine = 0;
m_ButtonSize.cx = 0;
}
}
// FIXME: This seems to be enabling redraws prematurely, but moving it to its right place doesn't work!
m_TaskBar.EndUpdate();
}
BOOL CALLBACK EnumWindowsProc(IN HWND hWnd)
{
if (m_Tray->IsTaskWnd(hWnd))
{
TRACE("Adding task for %p...\n", hWnd);
AddTask(hWnd);
}
return TRUE;
}
static BOOL CALLBACK s_EnumWindowsProc(IN HWND hWnd, IN LPARAM lParam)
{
CTaskSwitchWnd * This = (CTaskSwitchWnd *) lParam;
return This->EnumWindowsProc(hWnd);
}
BOOL RefreshWindowList()
{
TRACE("Refreshing window list...\n");
/* Add all windows to the toolbar */
return EnumWindows(s_EnumWindowsProc, (LPARAM)this);
}
LRESULT OnThemeChanged(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
TRACE("OmThemeChanged\n");
if (m_Theme)
CloseThemeData(m_Theme);
if (IsThemeActive())
m_Theme = OpenThemeData(m_hWnd, L"TaskBand");
else
m_Theme = NULL;
return TRUE;
}
LRESULT OnCreate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
if (!m_TaskBar.Initialize(m_hWnd))
return FALSE;
SetWindowTheme(m_TaskBar.m_hWnd, L"TaskBand", NULL);
m_ImageList = ImageList_Create(GetSystemMetrics(g_TaskbarSettings.bSmallIcons ? SM_CXSMICON : SM_CXICON),
GetSystemMetrics(g_TaskbarSettings.bSmallIcons ? SM_CYSMICON : SM_CYICON),
ILC_COLOR32 | ILC_MASK, 0, 1000);
m_TaskBar.SetImageList(m_ImageList);
/* Set proper spacing between buttons */
m_TaskBar.UpdateTbButtonSpacing(m_Tray->IsHorizontal(), m_Theme != NULL);
/* Register the shell hook */
m_ShellHookMsg = RegisterWindowMessageW(L"SHELLHOOK");
TRACE("ShellHookMsg got assigned number %d\n", m_ShellHookMsg);
RegisterShellHook(m_hWnd, 3); /* 1 if no NT! We're targeting NT so we don't care! */
RefreshWindowList();
/* Recalculate the button size */
UpdateButtonsSize(FALSE);
#if DUMP_TASKS != 0
SetTimer(hwnd, 1, 5000, NULL);
#endif
return TRUE;
}
LRESULT OnDestroy(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
m_IsDestroying = TRUE;
/* Unregister the shell hook */
RegisterShellHook(m_hWnd, FALSE);
CloseThemeData(m_Theme);
DeleteAllTasks();
return TRUE;
}
VOID SendPulseToTray(BOOL bDelete, HWND hwndActive)
{
HWND hwndTray = m_Tray->GetHWND();
::SendMessage(hwndTray, TWM_PULSE, bDelete, (LPARAM)hwndActive);
}
BOOL HandleAppCommand(IN WPARAM wParam, IN LPARAM lParam)
{
BOOL Ret = FALSE;
switch (GET_APPCOMMAND_LPARAM(lParam))
{
case APPCOMMAND_BROWSER_SEARCH:
Ret = SHFindFiles(NULL,
NULL);
break;
case APPCOMMAND_BROWSER_HOME:
case APPCOMMAND_LAUNCH_MAIL:
default:
TRACE("Shell app command %d unhandled!\n", (INT) GET_APPCOMMAND_LPARAM(lParam));
break;
}
return Ret;
}
LRESULT OnShellHook(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
BOOL Ret = FALSE;
/* In case the shell hook wasn't registered properly, ignore WM_NULLs*/
if (uMsg == 0)
{
bHandled = FALSE;
return 0;
}
TRACE("Received shell hook message: wParam=%08lx, lParam=%08lx\n", wParam, lParam);
switch ((INT) wParam)
{
case HSHELL_APPCOMMAND:
Ret = HandleAppCommand(wParam, lParam);
break;
case HSHELL_WINDOWCREATED:
SendPulseToTray(FALSE, (HWND)lParam);
AddTask((HWND) lParam);
break;
case HSHELL_WINDOWDESTROYED:
/* The window still exists! Delay destroying it a bit */
SendPulseToTray(TRUE, (HWND)lParam);
DeleteTask((HWND)lParam);
break;
case HSHELL_RUDEAPPACTIVATED:
case HSHELL_WINDOWACTIVATED:
SendPulseToTray(FALSE, (HWND)lParam);
ActivateTask((HWND)lParam);
break;
case HSHELL_FLASH:
FlashTask((HWND) lParam);
break;
case HSHELL_REDRAW:
RedrawTask((HWND) lParam);
break;
case HSHELL_TASKMAN:
::PostMessage(m_Tray->GetHWND(), TWM_OPENSTARTMENU, 0, 0);
break;
case HSHELL_ACTIVATESHELLWINDOW:
::SwitchToThisWindow(m_Tray->GetHWND(), TRUE);
::SetForegroundWindow(m_Tray->GetHWND());
break;
case HSHELL_LANGUAGE:
case HSHELL_SYSMENU:
case HSHELL_ENDTASK:
case HSHELL_ACCESSIBILITYSTATE:
case HSHELL_WINDOWREPLACED:
case HSHELL_WINDOWREPLACING:
case HSHELL_GETMINRECT:
default:
{
#if DEBUG_SHELL_HOOK
int i, found;
for (i = 0, found = 0; i != _countof(hshell_msg); i++)
{
if (hshell_msg[i].msg == (INT) wParam)
{
TRACE("Shell message %ws unhandled (lParam = 0x%p)!\n", hshell_msg[i].msg_name, lParam);
found = 1;
break;
}
}
if (found)
break;
#endif
TRACE("Shell message %d unhandled (lParam = 0x%p)!\n", (INT) wParam, lParam);
break;
}
}
return Ret;
}
VOID HandleTaskItemClick(IN OUT PTASK_ITEM TaskItem)
{
BOOL bIsMinimized;
BOOL bIsActive;
if (::IsWindow(TaskItem->hWnd))
{
bIsMinimized = ::IsIconic(TaskItem->hWnd);
bIsActive = (TaskItem == m_ActiveTaskItem);
TRACE("Active TaskItem %p, selected TaskItem %p\n", m_ActiveTaskItem, TaskItem);
if (m_ActiveTaskItem)
TRACE("Active TaskItem hWnd=%p, TaskItem hWnd %p\n", m_ActiveTaskItem->hWnd, TaskItem->hWnd);
TRACE("Valid button clicked. HWND=%p, IsMinimized=%s, IsActive=%s...\n",
TaskItem->hWnd, bIsMinimized ? "Yes" : "No", bIsActive ? "Yes" : "No");
if (!bIsMinimized && bIsActive)
{
if (!::IsHungAppWindow(TaskItem->hWnd))
::ShowWindowAsync(TaskItem->hWnd, SW_MINIMIZE);
TRACE("Valid button clicked. App window Minimized.\n");
}
else
{
::SwitchToThisWindow(TaskItem->hWnd, TRUE);
TRACE("Valid button clicked. App window Restored.\n");
}
}
}
VOID HandleTaskGroupClick(IN OUT PTASK_GROUP TaskGroup)
{
/* TODO: Show task group menu */
}
BOOL HandleButtonClick(IN WORD wIndex)
{
PTASK_ITEM TaskItem;
PTASK_GROUP TaskGroup;
if (m_IsGroupingEnabled)
{
TaskGroup = FindTaskGroupByIndex((INT) wIndex);
if (TaskGroup != NULL && TaskGroup->IsCollapsed)
{
HandleTaskGroupClick(TaskGroup);
return TRUE;
}
}
TaskItem = FindTaskItemByIndex((INT) wIndex);
if (TaskItem != NULL)
{
SendPulseToTray(FALSE, TaskItem->hWnd);
HandleTaskItemClick(TaskItem);
return TRUE;
}
return FALSE;
}
static VOID CALLBACK
SendAsyncProc(HWND hwnd, UINT uMsg, DWORD_PTR dwData, LRESULT lResult)
{
::PostMessageW(hwnd, WM_NULL, 0, 0);
}
VOID HandleTaskItemRightClick(IN OUT PTASK_ITEM TaskItem)
{
POINT pt;
GetCursorPos(&pt);
SetForegroundWindow(TaskItem->hWnd);
ActivateTask(TaskItem->hWnd);
if (GetForegroundWindow() != TaskItem->hWnd)
ERR("HandleTaskItemRightClick detected the window did not become foreground\n");
::SendMessageCallbackW(TaskItem->hWnd, WM_POPUPSYSTEMMENU, 0, MAKELPARAM(pt.x, pt.y),
SendAsyncProc, (ULONG_PTR)TaskItem);
}
VOID HandleTaskGroupRightClick(IN OUT PTASK_GROUP TaskGroup)
{
/* TODO: Show task group right click menu */
}
BOOL HandleButtonRightClick(IN WORD wIndex)
{
PTASK_ITEM TaskItem;
PTASK_GROUP TaskGroup;
if (m_IsGroupingEnabled)
{
TaskGroup = FindTaskGroupByIndex((INT) wIndex);
if (TaskGroup != NULL && TaskGroup->IsCollapsed)
{
HandleTaskGroupRightClick(TaskGroup);
return TRUE;
}
}
TaskItem = FindTaskItemByIndex((INT) wIndex);
if (TaskItem != NULL)
{
HandleTaskItemRightClick(TaskItem);
return TRUE;
}
return FALSE;
}
LRESULT HandleItemPaint(IN OUT NMTBCUSTOMDRAW *nmtbcd)
{
LRESULT Ret = CDRF_DODEFAULT;
PTASK_GROUP TaskGroup;
PTASK_ITEM TaskItem;
TaskItem = FindTaskItemByIndex((INT) nmtbcd->nmcd.dwItemSpec);
TaskGroup = FindTaskGroupByIndex((INT) nmtbcd->nmcd.dwItemSpec);
if (TaskGroup == NULL && TaskItem != NULL)
{
ASSERT(TaskItem != NULL);
if (TaskItem != NULL && ::IsWindow(TaskItem->hWnd))
{
/* Make the entire button flashing if necessary */
if (nmtbcd->nmcd.uItemState & CDIS_MARKED)
{
Ret = TBCDRF_NOBACKGROUND;
if (!m_Theme)
{
SelectObject(nmtbcd->nmcd.hdc, GetSysColorBrush(COLOR_HIGHLIGHT));
Rectangle(nmtbcd->nmcd.hdc,
nmtbcd->nmcd.rc.left,
nmtbcd->nmcd.rc.top,
nmtbcd->nmcd.rc.right,
nmtbcd->nmcd.rc.bottom);
}
else
{
DrawThemeBackground(m_Theme, nmtbcd->nmcd.hdc, TDP_FLASHBUTTON, 0, &nmtbcd->nmcd.rc, 0);
}
nmtbcd->clrText = GetSysColor(COLOR_HIGHLIGHTTEXT);
return Ret;
}
}
}
else if (TaskGroup != NULL)
{
/* FIXME: Implement painting for task groups */
}
return Ret;
}
LRESULT HandleToolbarNotification(IN const NMHDR *nmh)
{
LRESULT Ret = 0;
switch (nmh->code)
{
case NM_CUSTOMDRAW:
{
LPNMTBCUSTOMDRAW nmtbcd = (LPNMTBCUSTOMDRAW) nmh;
switch (nmtbcd->nmcd.dwDrawStage)
{
case CDDS_ITEMPREPAINT:
Ret = HandleItemPaint(nmtbcd);
break;
case CDDS_PREPAINT:
Ret = CDRF_NOTIFYITEMDRAW;
break;
default:
Ret = CDRF_DODEFAULT;
break;
}
break;
}
}
return Ret;
}
LRESULT OnEraseBackground(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
HDC hdc = (HDC) wParam;
if (!IsAppThemed())
{
bHandled = FALSE;
return 0;
}
RECT rect;
GetClientRect(&rect);
DrawThemeParentBackground(m_hWnd, hdc, &rect);
return TRUE;
}
LRESULT OnSize(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
SIZE szClient;
szClient.cx = LOWORD(lParam);
szClient.cy = HIWORD(lParam);
if (m_TaskBar.m_hWnd != NULL)
{
m_TaskBar.SetWindowPos(NULL, 0, 0, szClient.cx, szClient.cy, SWP_NOZORDER);
UpdateButtonsSize(FALSE);
}
return TRUE;
}
LRESULT OnNcHitTest(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
LRESULT Ret = TRUE;
/* We want the tray window to be draggable everywhere, so make the control
appear transparent */
Ret = DefWindowProc(uMsg, wParam, lParam);
if (Ret != HTVSCROLL && Ret != HTHSCROLL)
Ret = HTTRANSPARENT;
return Ret;
}
LRESULT OnCommand(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
LRESULT Ret = TRUE;
if (lParam != 0 && (HWND) lParam == m_TaskBar.m_hWnd)
{
HandleButtonClick(LOWORD(wParam));
}
return Ret;
}
LRESULT OnNotify(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
LRESULT Ret = TRUE;
const NMHDR *nmh = (const NMHDR *) lParam;
if (nmh->hwndFrom == m_TaskBar.m_hWnd)
{
Ret = HandleToolbarNotification(nmh);
}
return Ret;
}
LRESULT OnUpdateTaskbarPos(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
/* Update the button spacing */
m_TaskBar.UpdateTbButtonSpacing(m_Tray->IsHorizontal(), m_Theme != NULL);
return TRUE;
}
LRESULT OnTaskbarSettingsChanged(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
BOOL bSettingsChanged = FALSE;
TaskbarSettings* newSettings = (TaskbarSettings*)lParam;
if (newSettings->bGroupButtons != g_TaskbarSettings.bGroupButtons)
{
bSettingsChanged = TRUE;
g_TaskbarSettings.bGroupButtons = newSettings->bGroupButtons;
m_IsGroupingEnabled = g_TaskbarSettings.bGroupButtons;
}
if (newSettings->bSmallIcons != g_TaskbarSettings.bSmallIcons)
{
bSettingsChanged = TRUE;
g_TaskbarSettings.bSmallIcons = newSettings->bSmallIcons;
}
if (bSettingsChanged)
{
/* Refresh each task item view */
RefreshWindowList();
UpdateButtonsSize(FALSE);
}
return 0;
}
LRESULT OnContextMenu(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
LRESULT Ret = 0;
INT_PTR iBtn = -1;
if (m_TaskBar.m_hWnd != NULL)
{
POINT pt;
pt.x = GET_X_LPARAM(lParam);
pt.y = GET_Y_LPARAM(lParam);
::ScreenToClient(m_TaskBar.m_hWnd, &pt);
iBtn = m_TaskBar.HitTest(&pt);
if (iBtn >= 0)
{
HandleButtonRightClick(iBtn);
}
}
if (iBtn < 0)
{
/* Not on a taskbar button, so forward message to tray */
Ret = SendMessage(m_Tray->GetHWND(), uMsg, wParam, lParam);
}
return Ret;
}
LRESULT OnKludgeItemRect(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
PTASK_ITEM TaskItem = FindTaskItem((HWND) wParam);
if (TaskItem)
{
RECT* prcMinRect = (RECT*) lParam;
RECT rcItem, rcToolbar;
m_TaskBar.GetItemRect(TaskItem->Index, &rcItem);
m_TaskBar.GetWindowRect(&rcToolbar);
OffsetRect(&rcItem, rcToolbar.left, rcToolbar.top);
*prcMinRect = rcItem;
return TRUE;
}
return FALSE;
}
LRESULT OnMouseActivate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
return MA_NOACTIVATE;
}
LRESULT OnTimer(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
#if DUMP_TASKS != 0
switch (wParam)
{
case 1:
DumpTasks();
break;
}
#endif
return TRUE;
}
LRESULT OnSetFont(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
return m_TaskBar.SendMessageW(uMsg, wParam, lParam);
}
LRESULT OnSettingChanged(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
if (wParam == SPI_SETNONCLIENTMETRICS)
{
/* Don't update the font, this will be done when we get a WM_SETFONT from our parent */
UpdateButtonsSize(FALSE);
}
return 0;
}
LRESULT OnCopyData(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
PCOPYDATASTRUCT cpData = (PCOPYDATASTRUCT)lParam;
if (cpData->dwData == m_uHardErrorMsg)
{
/* A hard error balloon message */
PBALLOON_HARD_ERROR_DATA pData = (PBALLOON_HARD_ERROR_DATA)cpData->lpData;
ERR("Got balloon data 0x%x, 0x%x, '%S', '%S'\n", pData->Status, pData->dwType, (WCHAR*)((ULONG_PTR)pData + pData->TitleOffset), (WCHAR*)((ULONG_PTR)pData + pData->MessageOffset));
if (pData->cbHeaderSize == sizeof(BALLOON_HARD_ERROR_DATA))
m_HardErrorThread.StartThread(pData);
return TRUE;
}
return FALSE;
}
HRESULT Initialize(IN HWND hWndParent, IN OUT ITrayWindow *tray)
{
m_Tray = tray;
m_IsGroupingEnabled = g_TaskbarSettings.bGroupButtons;
Create(hWndParent, 0, szRunningApps, WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_TABSTOP);
if (!m_hWnd)
return E_FAIL;
return S_OK;
}
HRESULT WINAPI GetWindow(HWND* phwnd)
{
if (!phwnd)
return E_INVALIDARG;
*phwnd = m_hWnd;
return S_OK;
}
HRESULT WINAPI ContextSensitiveHelp(BOOL fEnterMode)
{
return E_NOTIMPL;
}
DECLARE_WND_CLASS_EX(szTaskSwitchWndClass, CS_DBLCLKS, COLOR_3DFACE)
BEGIN_MSG_MAP(CTaskSwitchWnd)
MESSAGE_HANDLER(WM_THEMECHANGED, OnThemeChanged)
MESSAGE_HANDLER(WM_ERASEBKGND, OnEraseBackground)
MESSAGE_HANDLER(WM_SIZE, OnSize)
MESSAGE_HANDLER(WM_CREATE, OnCreate)
MESSAGE_HANDLER(WM_DESTROY, OnDestroy)
MESSAGE_HANDLER(WM_NCHITTEST, OnNcHitTest)
MESSAGE_HANDLER(WM_COMMAND, OnCommand)
MESSAGE_HANDLER(WM_NOTIFY, OnNotify)
MESSAGE_HANDLER(TSWM_UPDATETASKBARPOS, OnUpdateTaskbarPos)
MESSAGE_HANDLER(TWM_SETTINGSCHANGED, OnTaskbarSettingsChanged)
MESSAGE_HANDLER(WM_CONTEXTMENU, OnContextMenu)
MESSAGE_HANDLER(WM_TIMER, OnTimer)
MESSAGE_HANDLER(WM_SETFONT, OnSetFont)
MESSAGE_HANDLER(WM_SETTINGCHANGE, OnSettingChanged)
MESSAGE_HANDLER(m_ShellHookMsg, OnShellHook)
MESSAGE_HANDLER(WM_MOUSEACTIVATE, OnMouseActivate)
MESSAGE_HANDLER(WM_KLUDGEMINRECT, OnKludgeItemRect)
MESSAGE_HANDLER(WM_COPYDATA, OnCopyData)
END_MSG_MAP()
DECLARE_NOT_AGGREGATABLE(CTaskSwitchWnd)
DECLARE_PROTECT_FINAL_CONSTRUCT()
BEGIN_COM_MAP(CTaskSwitchWnd)
COM_INTERFACE_ENTRY_IID(IID_IOleWindow, IOleWindow)
END_COM_MAP()
};
HRESULT CTaskSwitchWnd_CreateInstance(IN HWND hWndParent, IN OUT ITrayWindow *Tray, REFIID riid, void **ppv)
{
return ShellObjectCreatorInit<CTaskSwitchWnd>(hWndParent, Tray, riid, ppv);
}
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