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/*
* Theming - Initialization
*
* Copyright (c) 2005 by Frank Richter
*
* 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 <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "comctl32.h"
#include "uxtheme.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(theming);
typedef LRESULT (CALLBACK* THEMING_SUBCLASSPROC)(HWND, UINT, WPARAM, LPARAM,
ULONG_PTR);
extern LRESULT CALLBACK THEMING_DialogSubclassProc (HWND, UINT, WPARAM, LPARAM,
ULONG_PTR) DECLSPEC_HIDDEN;
extern LRESULT CALLBACK THEMING_ScrollbarSubclassProc (HWND, UINT, WPARAM, LPARAM,
ULONG_PTR) DECLSPEC_HIDDEN;
static const WCHAR dialogClass[] = {'#','3','2','7','7','0',0};
static const struct ThemingSubclass
{
const WCHAR* className;
THEMING_SUBCLASSPROC subclassProc;
} subclasses[] = {
/* Note: list must be sorted by class name */
{dialogClass, THEMING_DialogSubclassProc},
{WC_SCROLLBARW, THEMING_ScrollbarSubclassProc}
};
#define NUM_SUBCLASSES (ARRAY_SIZE(subclasses))
static WNDPROC originalProcs[NUM_SUBCLASSES];
static ATOM atRefDataProp;
static ATOM atSubclassProp;
/* Generate a number of subclass window procs.
* With a single proc alone, we can't really reliably find out the superclass,
* so have one for each subclass. The subclass number is also stored in a prop
* since it's needed by THEMING_CallOriginalClass(). Then, the subclass
* proc and ref data are fetched and the proc called.
*/
#define MAKE_SUBCLASS_PROC(N) \
static LRESULT CALLBACK subclass_proc ## N (HWND wnd, UINT msg, \
WPARAM wParam, LPARAM lParam) \
{ \
LRESULT result; \
ULONG_PTR refData; \
SetPropW (wnd, (LPCWSTR)MAKEINTATOM(atSubclassProp), (HANDLE)N); \
refData = (ULONG_PTR)GetPropW (wnd, (LPCWSTR)MAKEINTATOM(atRefDataProp)); \
TRACE ("%d; (%p, %x, %lx, %lx, %lx)\n", N, wnd, msg, wParam, lParam, \
refData); \
result = subclasses[N].subclassProc (wnd, msg, wParam, lParam, refData);\
TRACE ("result = %lx\n", result); \
return result; \
}
MAKE_SUBCLASS_PROC(0)
MAKE_SUBCLASS_PROC(1)
static const WNDPROC subclassProcs[NUM_SUBCLASSES] = {
subclass_proc0,
subclass_proc1,
};
/***********************************************************************
* THEMING_Initialize
*
* Register classes for standard controls that will shadow the system
* classes.
*/
void THEMING_Initialize (void)
{
unsigned int i;
static const WCHAR subclassPropName[] =
{ 'C','C','3','2','T','h','e','m','i','n','g','S','u','b','C','l',0 };
static const WCHAR refDataPropName[] =
{ 'C','C','3','2','T','h','e','m','i','n','g','D','a','t','a',0 };
if (!IsThemeActive()) return;
atSubclassProp = GlobalAddAtomW (subclassPropName);
atRefDataProp = GlobalAddAtomW (refDataPropName);
for (i = 0; i < NUM_SUBCLASSES; i++)
{
WNDCLASSEXW class;
class.cbSize = sizeof(class);
if (!GetClassInfoExW (NULL, subclasses[i].className, &class))
{
ERR("Could not retrieve information for class %s\n",
debugstr_w (subclasses[i].className));
continue;
}
originalProcs[i] = class.lpfnWndProc;
class.lpfnWndProc = subclassProcs[i];
if (!class.lpfnWndProc)
{
ERR("Missing proc for class %s\n",
debugstr_w (subclasses[i].className));
continue;
}
if (!RegisterClassExW (&class))
{
ERR("Could not re-register class %s: %x\n",
debugstr_w (subclasses[i].className), GetLastError ());
}
else
{
TRACE("Re-registered class %s\n",
debugstr_w (subclasses[i].className));
}
}
}
/***********************************************************************
* THEMING_Uninitialize
*
* Unregister shadow classes for standard controls.
*/
void THEMING_Uninitialize (void)
{
unsigned int i;
if (!atSubclassProp) return; /* not initialized */
for (i = 0; i < NUM_SUBCLASSES; i++)
{
UnregisterClassW (subclasses[i].className, NULL);
}
}
/***********************************************************************
* THEMING_CallOriginalClass
*
* Determines the original window proc and calls it.
*/
LRESULT THEMING_CallOriginalClass (HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
INT_PTR subclass = (INT_PTR)GetPropW (wnd, (LPCWSTR)MAKEINTATOM(atSubclassProp));
WNDPROC oldProc = originalProcs[subclass];
return CallWindowProcW (oldProc, wnd, msg, wParam, lParam);
}