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reactos/dll/win32/uxtheme/themehooks.c
Amine Khaldi 527f2f9057 [SHELL/EXPERIMENTS] 
* Create a branch for some evul shell experiments.

svn path=/branches/shell-experiments/; revision=61927
2014-02-02 19:37:27 +00:00

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS uxtheme.dll
* FILE: dll/win32/uxtheme/themehooks.c
* PURPOSE: uxtheme user api hook functions
* PROGRAMMER: Giannis Adamopoulos
*/
#include "uxthemep.h"
USERAPIHOOK user32ApiHook;
BYTE gabDWPmessages[UAHOWP_MAX_SIZE];
BYTE gabMSGPmessages[UAHOWP_MAX_SIZE];
BOOL gbThemeHooksActive = FALSE;
PWND_CONTEXT ThemeGetWndContext(HWND hWnd)
{
PWND_CONTEXT pcontext;
pcontext = (PWND_CONTEXT)GetPropW(hWnd, (LPCWSTR)MAKEINTATOM(atWndContrext));
if(pcontext == NULL)
{
pcontext = HeapAlloc(GetProcessHeap(),
HEAP_ZERO_MEMORY,
sizeof(WND_CONTEXT));
if(pcontext == NULL)
{
return NULL;
}
SetPropW( hWnd, (LPCWSTR)MAKEINTATOM(atWndContrext), pcontext);
}
return pcontext;
}
void ThemeDetroyWndContext(HWND hWnd)
{
PWND_CONTEXT pContext;
DWORD ProcessId;
/*Do not destroy WND_CONTEXT of a window that belong to another process */
GetWindowThreadProcessId(hWnd, &ProcessId);
if(ProcessId != GetCurrentProcessId())
{
return;
}
pContext = (PWND_CONTEXT)GetPropW(hWnd, (LPCWSTR)MAKEINTATOM(atWndContrext));
if(pContext == NULL)
{
return;
}
if(pContext->HasThemeRgn)
{
user32ApiHook.SetWindowRgn(hWnd, 0, TRUE);
}
HeapFree(GetProcessHeap(), 0, pContext);
SetPropW( hWnd, (LPCWSTR)MAKEINTATOM(atWndContrext), NULL);
}
static BOOL CALLBACK ThemeCleanupChildWndContext (HWND hWnd, LPARAM msg)
{
ThemeDetroyWndContext(hWnd);
return TRUE;
}
static BOOL CALLBACK ThemeCleanupWndContext(HWND hWnd, LPARAM msg)
{
if (hWnd == NULL)
{
EnumWindows (ThemeCleanupWndContext, 0);
}
else
{
ThemeDetroyWndContext(hWnd);
EnumChildWindows (hWnd, ThemeCleanupChildWndContext, 0);
}
return TRUE;
}
void SetThemeRegion(HWND hWnd)
{
HTHEME hTheme;
RECT rcWindow;
HRGN hrgn, hrgn1;
int CaptionHeight, iPart;
WINDOWINFO wi;
TRACE("SetThemeRegion %d\n", hWnd);
wi.cbSize = sizeof(wi);
GetWindowInfo(hWnd, &wi);
/* Get the caption part id */
if (wi.dwExStyle & WS_EX_TOOLWINDOW)
iPart = WP_SMALLCAPTION;
else if (wi.dwStyle & WS_MAXIMIZE)
iPart = WP_MAXCAPTION;
else
iPart = WP_CAPTION;
CaptionHeight = wi.cyWindowBorders;
CaptionHeight += GetSystemMetrics(wi.dwExStyle & WS_EX_TOOLWINDOW ? SM_CYSMCAPTION : SM_CYCAPTION );
GetWindowRect(hWnd, &rcWindow);
rcWindow.right -= rcWindow.left;
rcWindow.bottom = CaptionHeight;
rcWindow.top = 0;
rcWindow.left = 0;
hTheme = MSSTYLES_OpenThemeClass(ActiveThemeFile, NULL, L"WINDOW");
GetThemeBackgroundRegion(hTheme, 0, iPart, FS_ACTIVE, &rcWindow, &hrgn);
CloseThemeData(hTheme);
GetWindowRect(hWnd, &rcWindow);
rcWindow.right -= rcWindow.left;
rcWindow.bottom -= rcWindow.top;
rcWindow.top = CaptionHeight;
rcWindow.left = 0;
hrgn1 = CreateRectRgnIndirect(&rcWindow);
CombineRgn(hrgn, hrgn, hrgn1, RGN_OR );
DeleteObject(hrgn1);
user32ApiHook.SetWindowRgn(hWnd, hrgn, TRUE);
}
int OnPostWinPosChanged(HWND hWnd, WINDOWPOS* pWinPos)
{
PWND_CONTEXT pcontext;
DWORD style;
/* We only proceed to change the window shape if it has a caption */
style = GetWindowLongW(hWnd, GWL_STYLE);
if((style & WS_CAPTION)!=WS_CAPTION)
return 0;
/* Get theme data for this window */
pcontext = ThemeGetWndContext(hWnd);
if (pcontext == NULL)
return 0;
/* Do not change the region of the window if its size wasn't changed */
if ((pWinPos->flags & SWP_NOSIZE) != 0 && pcontext->DirtyThemeRegion == FALSE)
return 0;
/* We don't touch the shape of the window if the application sets it on its own */
if (pcontext->HasAppDefinedRgn == TRUE)
return 0;
/* Calling SetWindowRgn will call SetWindowPos again so we need to avoid this recursion */
if (pcontext->UpdatingRgn == TRUE)
return 0;
if(!IsAppThemed())
{
if(pcontext->HasThemeRgn)
{
pcontext->HasThemeRgn = FALSE;
user32ApiHook.SetWindowRgn(hWnd, 0, TRUE);
}
return 0;
}
pcontext->DirtyThemeRegion = FALSE;
pcontext->HasThemeRgn = TRUE;
pcontext->UpdatingRgn = TRUE;
SetThemeRegion(hWnd);
pcontext->UpdatingRgn = FALSE;
return 0;
}
/**********************************************************************
* Hook Functions
*/
static LRESULT CALLBACK
ThemeDefWindowProcW(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
if(!IsAppThemed())
{
return user32ApiHook.DefWindowProcW(hWnd,
Msg,
wParam,
lParam);
}
return ThemeWndProc(hWnd,
Msg,
wParam,
lParam,
user32ApiHook.DefWindowProcW);
}
static LRESULT CALLBACK
ThemeDefWindowProcA(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
if(!IsAppThemed())
{
return user32ApiHook.DefWindowProcA(hWnd,
Msg,
wParam,
lParam);
}
return ThemeWndProc(hWnd,
Msg,
wParam,
lParam,
user32ApiHook.DefWindowProcA);
}
static LRESULT CALLBACK
ThemePreWindowProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam, ULONG_PTR ret,PDWORD unknown)
{
switch(Msg)
{
case WM_THEMECHANGED:
if (GetAncestor(hWnd, GA_PARENT) == GetDesktopWindow())
UXTHEME_LoadTheme(TRUE);
case WM_NCCREATE:
{
PWND_CONTEXT pcontext = ThemeGetWndContext(hWnd);
if (pcontext == NULL)
return 0;
pcontext->DirtyThemeRegion = TRUE;
}
}
return 0;
}
static LRESULT CALLBACK
ThemePostWindowProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam, ULONG_PTR ret,PDWORD unknown)
{
switch(Msg)
{
case WM_WINDOWPOSCHANGED:
{
return OnPostWinPosChanged(hWnd, (WINDOWPOS*)lParam);
}
case WM_DESTROY:
{
ThemeDetroyWndContext(hWnd);
return 0;
}
}
return 0;
}
int WINAPI ThemeSetWindowRgn(HWND hWnd, HRGN hRgn, BOOL bRedraw)
{
PWND_CONTEXT pcontext = ThemeGetWndContext(hWnd);
if(pcontext)
{
pcontext->HasAppDefinedRgn = TRUE;
pcontext->HasThemeRgn = FALSE;
}
return user32ApiHook.SetWindowRgn(hWnd, hRgn, bRedraw);
}
/**********************************************************************
* Exports
*/
BOOL CALLBACK
ThemeInitApiHook(UAPIHK State, PUSERAPIHOOK puah)
{
if (!puah || State != uahLoadInit)
{
UXTHEME_LoadTheme(FALSE);
ThemeCleanupWndContext(NULL, 0);
gbThemeHooksActive = FALSE;
return TRUE;
}
gbThemeHooksActive = TRUE;
/* Store the original functions from user32 */
user32ApiHook = *puah;
puah->DefWindowProcA = ThemeDefWindowProcA;
puah->DefWindowProcW = ThemeDefWindowProcW;
puah->PreWndProc = ThemePreWindowProc;
puah->PostWndProc = ThemePostWindowProc;
puah->PreDefDlgProc = ThemePreWindowProc;
puah->PostDefDlgProc = ThemePostWindowProc;
puah->DefWndProcArray.MsgBitArray = gabDWPmessages;
puah->DefWndProcArray.Size = UAHOWP_MAX_SIZE;
puah->WndProcArray.MsgBitArray = gabMSGPmessages;
puah->WndProcArray.Size = UAHOWP_MAX_SIZE;
puah->DlgProcArray.MsgBitArray = gabMSGPmessages;
puah->DlgProcArray.Size = UAHOWP_MAX_SIZE;
puah->SetWindowRgn = ThemeSetWindowRgn;
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_NCPAINT);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_NCACTIVATE);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_NCMOUSEMOVE);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_NCMOUSELEAVE);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_NCHITTEST);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_NCLBUTTONDOWN);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_NCUAHDRAWCAPTION);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_NCUAHDRAWFRAME);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_SETTEXT);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_WINDOWPOSCHANGED);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_CONTEXTMENU);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_STYLECHANGED);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_SETICON);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_NCDESTROY);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_SYSCOMMAND);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_CTLCOLORMSGBOX);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_CTLCOLORBTN);
UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_CTLCOLORSTATIC);
UAH_HOOK_MESSAGE(puah->WndProcArray, WM_CREATE);
UAH_HOOK_MESSAGE(puah->WndProcArray, WM_SETTINGCHANGE);
UAH_HOOK_MESSAGE(puah->WndProcArray, WM_DRAWITEM);
UAH_HOOK_MESSAGE(puah->WndProcArray, WM_MEASUREITEM);
UAH_HOOK_MESSAGE(puah->WndProcArray, WM_WINDOWPOSCHANGING);
UAH_HOOK_MESSAGE(puah->WndProcArray, WM_WINDOWPOSCHANGED);
UAH_HOOK_MESSAGE(puah->WndProcArray, WM_STYLECHANGING);
UAH_HOOK_MESSAGE(puah->WndProcArray, WM_STYLECHANGED);
UAH_HOOK_MESSAGE(puah->WndProcArray, WM_NCCREATE);
UAH_HOOK_MESSAGE(puah->WndProcArray, WM_NCDESTROY);
UAH_HOOK_MESSAGE(puah->WndProcArray, WM_NCPAINT);
UAH_HOOK_MESSAGE(puah->WndProcArray, WM_MENUCHAR);
UAH_HOOK_MESSAGE(puah->WndProcArray, WM_MDISETMENU);
UAH_HOOK_MESSAGE(puah->WndProcArray, WM_THEMECHANGED);
UAH_HOOK_MESSAGE(puah->WndProcArray, WM_UAHINIT);
UXTHEME_LoadTheme(TRUE);
return TRUE;
}
typedef BOOL (WINAPI * PREGISTER_UAH_WINXP)(HINSTANCE hInstance, USERAPIHOOKPROC CallbackFunc);
typedef BOOL (WINAPI * PREGISTER_UUAH_WIN2003)(PUSERAPIHOOKINFO puah);
BOOL WINAPI
ThemeHooksInstall()
{
PVOID lpFunc;
OSVERSIONINFO osvi;
BOOL ret;
lpFunc = GetProcAddress(GetModuleHandle("user32.dll"), "RegisterUserApiHook");
ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&osvi);
if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 1)
{
PREGISTER_UAH_WINXP lpfuncxp = (PREGISTER_UAH_WINXP)lpFunc;
ret = lpfuncxp(hDllInst, ThemeInitApiHook);
}
else if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 2)
{
PREGISTER_UUAH_WIN2003 lpfunc2003 = (PREGISTER_UUAH_WIN2003)lpFunc;
USERAPIHOOKINFO uah;
uah.m_size = sizeof(uah);
uah.m_dllname1 = L"uxtheme.dll";
uah.m_funname1 = L"ThemeInitApiHook";
uah.m_dllname2 = NULL;
uah.m_funname2 = NULL;
ret = lpfunc2003(&uah);
}
else
{
UNIMPLEMENTED;
ret = FALSE;
}
UXTHEME_broadcast_msg (NULL, WM_THEMECHANGED);
return ret;
}
BOOL WINAPI
ThemeHooksRemove()
{
BOOL ret;
ret = UnregisterUserApiHook();
UXTHEME_broadcast_msg (NULL, WM_THEMECHANGED);
return ret;
}
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