jscript: Added Dll[Un]RegisterServer implementation.
[wine] / dlls / ole32 / ole32_main.c
1 /*
2  *  OLE32 Initialization
3  *
4  * Copyright 2000 Huw D M Davies for CodeWeavers
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 #include "config.h"
22 #include "wine/port.h"
23
24 #include <stdarg.h>
25 #include <stdio.h>
26
27 #include "windef.h"
28 #include "winbase.h"
29 #include "wingdi.h"
30 #include "winuser.h"
31 #include "winnls.h"
32 #include "objbase.h"
33 #include "wine/debug.h"
34
35 WINE_DEFAULT_DEBUG_CHANNEL(ole);
36
37 #define HIMETRIC_INCHES 2540
38
39 /***********************************************************************
40  *              OleMetafilePictFromIconAndLabel (OLE32.@)
41  */
42 HGLOBAL WINAPI OleMetafilePictFromIconAndLabel(HICON hIcon, LPOLESTR lpszLabel,
43                                                LPOLESTR lpszSourceFile, UINT iIconIndex)
44 {
45         METAFILEPICT mfp;
46         HDC hdc;
47         HGLOBAL hmem = NULL;
48         LPVOID mfdata;
49         static const char szIconOnly[] = "IconOnly";
50         SIZE text_size = { 0, 0 };
51         INT width;
52         INT icon_width;
53         INT icon_height;
54         INT label_offset;
55         HDC hdcScreen;
56         LOGFONTW lf;
57         HFONT font;
58
59         TRACE("%p %p %s %d\n", hIcon, lpszLabel, debugstr_w(lpszSourceFile), iIconIndex);
60
61         if( !hIcon )
62                 return NULL;
63
64         if (!SystemParametersInfoW(SPI_GETICONTITLELOGFONT, sizeof(lf), &lf, 0))
65                 return NULL;
66
67         font = CreateFontIndirectW(&lf);
68         if (!font)
69                 return NULL;
70
71         hdc = CreateMetaFileW(NULL);
72         if( !hdc )
73         {
74                 DeleteObject(font);
75                 return NULL;
76         }
77
78         SelectObject(hdc, font);
79
80         ExtEscape(hdc, MFCOMMENT, sizeof(szIconOnly), szIconOnly, 0, NULL);
81
82         icon_width = GetSystemMetrics(SM_CXICON);
83         icon_height = GetSystemMetrics(SM_CYICON);
84         /* FIXME: should we give the label a bit of padding here? */
85         label_offset = icon_height;
86         if (lpszLabel)
87         {
88                 HFONT screen_old_font;
89                 /* metafile DCs don't support GetTextExtentPoint32, so size the font
90                  * using the desktop window DC */
91                 hdcScreen = GetDC(NULL);
92                 screen_old_font = SelectObject(hdcScreen, font);
93                 GetTextExtentPoint32W(hdcScreen, lpszLabel, lstrlenW(lpszLabel), &text_size);
94                 SelectObject(hdcScreen, screen_old_font);
95                 ReleaseDC(NULL, hdcScreen);
96
97                 width = 3 * icon_width;
98         }
99         else
100                 width = icon_width;
101
102         SetMapMode(hdc, MM_ANISOTROPIC);
103         SetWindowOrgEx(hdc, 0, 0, NULL);
104         SetWindowExtEx(hdc, width, label_offset + text_size.cy, NULL);
105
106         /* draw the icon centred */
107         DrawIcon(hdc, (width-icon_width) / 2, 0, hIcon);
108         if(lpszLabel)
109                 /* draw the label centred too, if provided */
110                 TextOutW(hdc, (width-text_size.cx) / 2, label_offset, lpszLabel, lstrlenW(lpszLabel));
111
112         if (lpszSourceFile)
113         {
114                 char szIconIndex[10];
115                 int path_length = WideCharToMultiByte(CP_ACP,0,lpszSourceFile,-1,NULL,0,NULL,NULL);
116                 if (path_length > 1)
117                 {
118                         char * szPath = CoTaskMemAlloc(path_length * sizeof(CHAR));
119                         if (szPath)
120                         {
121                                 WideCharToMultiByte(CP_ACP,0,lpszSourceFile,-1,szPath,path_length,NULL,NULL);
122                                 ExtEscape(hdc, MFCOMMENT, path_length, szPath, 0, NULL);
123                                 CoTaskMemFree(szPath);
124                         }
125                 }
126                 snprintf(szIconIndex, 10, "%u", iIconIndex);
127                 ExtEscape(hdc, MFCOMMENT, strlen(szIconIndex)+1, szIconIndex, 0, NULL);
128         }
129
130         mfp.mm = MM_ANISOTROPIC;
131         hdcScreen = GetDC(NULL);
132         mfp.xExt = MulDiv(width, HIMETRIC_INCHES, GetDeviceCaps(hdcScreen, LOGPIXELSX));
133         mfp.yExt = MulDiv(label_offset + text_size.cy, HIMETRIC_INCHES, GetDeviceCaps(hdcScreen, LOGPIXELSY));
134         ReleaseDC(NULL, hdcScreen);
135         mfp.hMF = CloseMetaFile(hdc);
136         DeleteObject(font);
137         if( !mfp.hMF )
138                 return NULL;
139
140         hmem = GlobalAlloc( GMEM_MOVEABLE, sizeof(mfp) );
141         if( !hmem )
142         {
143                 DeleteMetaFile(mfp.hMF);
144                 return NULL;
145         }
146
147         mfdata = GlobalLock( hmem );
148         if( !mfdata )
149         {
150                 GlobalFree( hmem );
151                 DeleteMetaFile(mfp.hMF);
152                 return NULL;
153         }
154
155         memcpy(mfdata,&mfp,sizeof(mfp));
156         GlobalUnlock( hmem );
157
158         TRACE("returning %p\n",hmem);
159
160         return hmem;
161 }