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 "ole2.h"
34 #include "wine/debug.h"
35
36 WINE_DEFAULT_DEBUG_CHANNEL(ole);
37
38 #define HIMETRIC_INCHES 2540
39
40 /***********************************************************************
41 * OleMetafilePictFromIconAndLabel (OLE32.@)
42 */
43 HGLOBAL WINAPI OleMetafilePictFromIconAndLabel(HICON hIcon, LPOLESTR lpszLabel,
44 LPOLESTR lpszSourceFile, UINT iIconIndex)
45 {
46 METAFILEPICT mfp;
47 HDC hdc;
48 HGLOBAL hmem = NULL;
49 LPVOID mfdata;
50 static const char szIconOnly[] = "IconOnly";
51 SIZE text_size = { 0, 0 };
52 INT width;
53 INT icon_width;
54 INT icon_height;
55 INT label_offset;
56 HDC hdcScreen;
57 LOGFONTW lf;
58 HFONT font;
59
60 TRACE("%p %p %s %d\n", hIcon, lpszLabel, debugstr_w(lpszSourceFile), iIconIndex);
61
62 if( !hIcon )
63 return NULL;
64
65 if (!SystemParametersInfoW(SPI_GETICONTITLELOGFONT, sizeof(lf), &lf, 0))
66 return NULL;
67
68 font = CreateFontIndirectW(&lf);
69 if (!font)
70 return NULL;
71
72 hdc = CreateMetaFileW(NULL);
73 if( !hdc )
74 {
75 DeleteObject(font);
76 return NULL;
77 }
78
79 SelectObject(hdc, font);
80
81 ExtEscape(hdc, MFCOMMENT, sizeof(szIconOnly), szIconOnly, 0, NULL);
82
83 icon_width = GetSystemMetrics(SM_CXICON);
84 icon_height = GetSystemMetrics(SM_CYICON);
85 /* FIXME: should we give the label a bit of padding here? */
86 label_offset = icon_height;
87 if (lpszLabel)
88 {
89 HFONT screen_old_font;
90 /* metafile DCs don't support GetTextExtentPoint32, so size the font
91 * using the desktop window DC */
92 hdcScreen = GetDC(NULL);
93 screen_old_font = SelectObject(hdcScreen, font);
94 GetTextExtentPoint32W(hdcScreen, lpszLabel, lstrlenW(lpszLabel), &text_size);
95 SelectObject(hdcScreen, screen_old_font);
96 ReleaseDC(NULL, hdcScreen);
97
98 width = 3 * icon_width;
99 }
100 else
101 width = icon_width;
102
103 SetMapMode(hdc, MM_ANISOTROPIC);
104 SetWindowOrgEx(hdc, 0, 0, NULL);
105 SetWindowExtEx(hdc, width, label_offset + text_size.cy, NULL);
106
107 /* draw the icon centered */
108 DrawIcon(hdc, (width-icon_width) / 2, 0, hIcon);
109 if(lpszLabel)
110 /* draw the label centered too, if provided */
111 TextOutW(hdc, (width-text_size.cx) / 2, label_offset, lpszLabel, lstrlenW(lpszLabel));
112
113 if (lpszSourceFile)
114 {
115 char szIconIndex[10];
116 int path_length = WideCharToMultiByte(CP_ACP,0,lpszSourceFile,-1,NULL,0,NULL,NULL);
117 if (path_length > 1)
118 {
119 char * szPath = CoTaskMemAlloc(path_length * sizeof(CHAR));
120 if (szPath)
121 {
122 WideCharToMultiByte(CP_ACP,0,lpszSourceFile,-1,szPath,path_length,NULL,NULL);
123 ExtEscape(hdc, MFCOMMENT, path_length, szPath, 0, NULL);
124 CoTaskMemFree(szPath);
125 }
126 }
127 snprintf(szIconIndex, 10, "%u", iIconIndex);
128 ExtEscape(hdc, MFCOMMENT, strlen(szIconIndex)+1, szIconIndex, 0, NULL);
129 }
130
131 mfp.mm = MM_ANISOTROPIC;
132 hdcScreen = GetDC(NULL);
133 mfp.xExt = MulDiv(width, HIMETRIC_INCHES, GetDeviceCaps(hdcScreen, LOGPIXELSX));
134 mfp.yExt = MulDiv(label_offset + text_size.cy, HIMETRIC_INCHES, GetDeviceCaps(hdcScreen, LOGPIXELSY));
135 ReleaseDC(NULL, hdcScreen);
136 mfp.hMF = CloseMetaFile(hdc);
137 DeleteObject(font);
138 if( !mfp.hMF )
139 return NULL;
140
141 hmem = GlobalAlloc( GMEM_MOVEABLE, sizeof(mfp) );
142 if( !hmem )
143 {
144 DeleteMetaFile(mfp.hMF);
145 return NULL;
146 }
147
148 mfdata = GlobalLock( hmem );
149 if( !mfdata )
150 {
151 GlobalFree( hmem );
152 DeleteMetaFile(mfp.hMF);
153 return NULL;
154 }
155
156 memcpy(mfdata,&mfp,sizeof(mfp));
157 GlobalUnlock( hmem );
158
159 TRACE("returning %p\n",hmem);
160
161 return hmem;
162 }
163
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