1 /*
2 * Theming - Initialization
3 *
4 * Copyright (c) 2005 by Frank Richter
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 *
20 */
21
22 #include <stdarg.h>
23
24 #include "windef.h"
25 #include "winbase.h"
26 #include "wingdi.h"
27 #include "winuser.h"
28 #include "comctl32.h"
29 #include "uxtheme.h"
30 #include "wine/debug.h"
31
32 WINE_DEFAULT_DEBUG_CHANNEL(theming);
33
34 typedef LRESULT (CALLBACK* THEMING_SUBCLASSPROC)(HWND, UINT, WPARAM, LPARAM,
35 ULONG_PTR);
36
37 extern LRESULT CALLBACK THEMING_ButtonSubclassProc (HWND, UINT, WPARAM, LPARAM,
38 ULONG_PTR) DECLSPEC_HIDDEN;
39 extern LRESULT CALLBACK THEMING_ComboSubclassProc (HWND, UINT, WPARAM, LPARAM,
40 ULONG_PTR) DECLSPEC_HIDDEN;
41 extern LRESULT CALLBACK THEMING_DialogSubclassProc (HWND, UINT, WPARAM, LPARAM,
42 ULONG_PTR) DECLSPEC_HIDDEN;
43 extern LRESULT CALLBACK THEMING_EditSubclassProc (HWND, UINT, WPARAM, LPARAM,
44 ULONG_PTR) DECLSPEC_HIDDEN;
45 extern LRESULT CALLBACK THEMING_ListBoxSubclassProc (HWND, UINT, WPARAM, LPARAM,
46 ULONG_PTR) DECLSPEC_HIDDEN;
47
48 static const WCHAR dialogClass[] = {'#','3','2','7','7','',0};
49 static const WCHAR comboLboxClass[] = {'C','o','m','b','o','L','b','o','x',0};
50
51 static const struct ThemingSubclass
52 {
53 const WCHAR* className;
54 THEMING_SUBCLASSPROC subclassProc;
55 } subclasses[] = {
56 /* Note: list must be sorted by class name */
57 {dialogClass, THEMING_DialogSubclassProc},
58 {WC_BUTTONW, THEMING_ButtonSubclassProc},
59 {WC_COMBOBOXW, THEMING_ComboSubclassProc},
60 {comboLboxClass, THEMING_ListBoxSubclassProc},
61 {WC_EDITW, THEMING_EditSubclassProc},
62 {WC_LISTBOXW, THEMING_ListBoxSubclassProc}
63 };
64
65 #define NUM_SUBCLASSES (sizeof(subclasses)/sizeof(subclasses[0]))
66
67 static WNDPROC originalProcs[NUM_SUBCLASSES];
68 static ATOM atRefDataProp;
69 static ATOM atSubclassProp;
70
71 /* Generate a number of subclass window procs.
72 * With a single proc alone, we can't really reliably find out the superclass,
73 * so have one for each subclass. The subclass number is also stored in a prop
74 * since it's needed by THEMING_CallOriginalClass(). Then, the subclass
75 * proc and ref data are fetched and the proc called.
76 */
77 #define MAKE_SUBCLASS_PROC(N) \
78 static LRESULT CALLBACK subclass_proc ## N (HWND wnd, UINT msg, \
79 WPARAM wParam, LPARAM lParam) \
80 { \
81 LRESULT result; \
82 ULONG_PTR refData; \
83 SetPropW (wnd, (LPCWSTR)MAKEINTATOM(atSubclassProp), (HANDLE)N); \
84 refData = (ULONG_PTR)GetPropW (wnd, (LPCWSTR)MAKEINTATOM(atRefDataProp)); \
85 TRACE ("%d; (%p, %x, %lx, %lx, %lx)\n", N, wnd, msg, wParam, lParam, \
86 refData); \
87 result = subclasses[N].subclassProc (wnd, msg, wParam, lParam, refData);\
88 TRACE ("result = %lx\n", result); \
89 return result; \
90 }
91
92 MAKE_SUBCLASS_PROC(0)
93 MAKE_SUBCLASS_PROC(1)
94 MAKE_SUBCLASS_PROC(2)
95 MAKE_SUBCLASS_PROC(3)
96 MAKE_SUBCLASS_PROC(4)
97 MAKE_SUBCLASS_PROC(5)
98
99 static const WNDPROC subclassProcs[NUM_SUBCLASSES] = {
100 subclass_proc0,
101 subclass_proc1,
102 subclass_proc2,
103 subclass_proc3,
104 subclass_proc4,
105 subclass_proc5
106 };
107
108 /***********************************************************************
109 * THEMING_Initialize
110 *
111 * Register classes for standard controls that will shadow the system
112 * classes.
113 */
114 void THEMING_Initialize (void)
115 {
116 unsigned int i;
117 static const WCHAR subclassPropName[] =
118 { 'C','C','3','2','T','h','e','m','i','n','g','S','u','b','C','l',0 };
119 static const WCHAR refDataPropName[] =
120 { 'C','C','3','2','T','h','e','m','i','n','g','D','a','t','a',0 };
121
122 if (!IsThemeActive()) return;
123
124 atSubclassProp = GlobalAddAtomW (subclassPropName);
125 atRefDataProp = GlobalAddAtomW (refDataPropName);
126
127 for (i = 0; i < NUM_SUBCLASSES; i++)
128 {
129 WNDCLASSEXW class;
130
131 class.cbSize = sizeof(class);
132 if (!GetClassInfoExW (NULL, subclasses[i].className, &class))
133 {
134 ERR("Could not retrieve information for class %s\n",
135 debugstr_w (subclasses[i].className));
136 continue;
137 }
138 originalProcs[i] = class.lpfnWndProc;
139 class.lpfnWndProc = subclassProcs[i];
140
141 if (!class.lpfnWndProc)
142 {
143 ERR("Missing proc for class %s\n",
144 debugstr_w (subclasses[i].className));
145 continue;
146 }
147
148 if (!RegisterClassExW (&class))
149 {
150 ERR("Could not re-register class %s: %x\n",
151 debugstr_w (subclasses[i].className), GetLastError ());
152 }
153 else
154 {
155 TRACE("Re-registered class %s\n",
156 debugstr_w (subclasses[i].className));
157 }
158 }
159 }
160
161 /***********************************************************************
162 * THEMING_Uninitialize
163 *
164 * Unregister shadow classes for standard controls.
165 */
166 void THEMING_Uninitialize (void)
167 {
168 unsigned int i;
169
170 if (!atSubclassProp) return; /* not initialized */
171
172 for (i = 0; i < NUM_SUBCLASSES; i++)
173 {
174 UnregisterClassW (subclasses[i].className, NULL);
175 }
176 }
177
178 /***********************************************************************
179 * THEMING_CallOriginalClass
180 *
181 * Determines the original window proc and calls it.
182 */
183 LRESULT THEMING_CallOriginalClass (HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam)
184 {
185 INT_PTR subclass = (INT_PTR)GetPropW (wnd, (LPCWSTR)MAKEINTATOM(atSubclassProp));
186 WNDPROC oldProc = originalProcs[subclass];
187 return CallWindowProcW (oldProc, wnd, msg, wParam, lParam);
188 }
189
190 /***********************************************************************
191 * THEMING_SetSubclassData
192 *
193 * Update the "refData" value of the subclassed window.
194 */
195 void THEMING_SetSubclassData (HWND wnd, ULONG_PTR refData)
196 {
197 SetPropW (wnd, (LPCWSTR)MAKEINTATOM(atRefDataProp), (HANDLE)refData);
198 }
199
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