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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef UI_BASE_L10N_L10N_UTIL_WIN_H_ | |
6 #define UI_BASE_L10N_L10N_UTIL_WIN_H_ | |
7 | |
8 #include <windows.h> | |
9 #include <string> | |
10 #include <vector> | |
11 | |
12 #include "base/strings/string16.h" | |
13 #include "ui/base/ui_base_export.h" | |
14 | |
15 namespace l10n_util { | |
16 | |
17 // Returns the locale-dependent extended window styles. | |
18 // This function is used for adding locale-dependent extended window styles | |
19 // (e.g. WS_EX_LAYOUTRTL, WS_EX_RTLREADING, etc.) when creating a window. | |
20 // Callers should OR this value into their extended style value when creating | |
21 // a window. | |
22 UI_BASE_EXPORT int GetExtendedStyles(); | |
23 | |
24 // TODO(xji): | |
25 // This is a temporary name, it will eventually replace GetExtendedStyles | |
26 UI_BASE_EXPORT int GetExtendedTooltipStyles(); | |
27 | |
28 // Give an HWND, this function sets the WS_EX_LAYOUTRTL extended style for the | |
29 // underlying window. When this style is set, the UI for the window is going to | |
30 // be mirrored. This is generally done for the UI of right-to-left languages | |
31 // such as Hebrew. | |
32 UI_BASE_EXPORT void HWNDSetRTLLayout(HWND hwnd); | |
33 | |
34 // See http://blogs.msdn.com/oldnewthing/archive/2005/09/15/467598.aspx | |
35 // and http://blogs.msdn.com/oldnewthing/archive/2006/06/26/647365.aspx | |
36 // as to why we need these three functions. | |
37 | |
38 // Return true if the default font (we get from Windows) is not suitable | |
39 // to use in the UI of the current UI (e.g. Malayalam, Bengali). If | |
40 // override_font_family and font_size_scaler are not null, they'll be | |
41 // filled with the font family name and the size scaler. The output | |
42 // parameters are not modified if the return value is false. | |
43 UI_BASE_EXPORT bool NeedOverrideDefaultUIFont( | |
44 base::string16* override_font_family, | |
45 double* font_size_scaler); | |
46 | |
47 // If the default UI font stored in |logfont| is not suitable, its family | |
48 // and size are replaced with those stored in the per-locale resource. The | |
49 // font size is adjusted based on the font scale setting in the OS preferences. | |
50 // Windows 8 supports scale factors of 1, 1.4 and 1.8. | |
51 UI_BASE_EXPORT void AdjustUIFont(LOGFONT* logfont); | |
52 | |
53 // If the default UI font stored in |logfont| is not suitable, its family | |
54 // and size are replaced with those stored in the per-locale resource. The | |
55 // |dpi_scale| is the ratio of the OS setting for dots per inch relative to the | |
56 // baseline of 96 DPI. This ratio is also used for converting sizes from | |
57 // device independent pixels (DIP) to physical pixels. The font size is scaled | |
58 // for use with Views and Aura which work in DIP. | |
59 UI_BASE_EXPORT void AdjustUIFontForDIP(float dpi_scale, LOGFONT* logfont); | |
60 | |
61 // If the font for a given window (pointed to by HWND) is not suitable for the | |
62 // UI in the current UI langauge, its family and size are replaced with those | |
63 // stored in the per-locale resource. | |
64 UI_BASE_EXPORT void AdjustUIFontForWindow(HWND hwnd); | |
65 | |
66 // Allow processes to override the configured locale with the user's Windows UI | |
67 // languages. This function should generally be called once early in | |
68 // Application startup. | |
69 UI_BASE_EXPORT void OverrideLocaleWithUILanguageList(); | |
70 | |
71 // Retrieve the locale override, or an empty vector if the locale has not been | |
72 // or failed to be overridden. | |
73 const std::vector<std::string>& GetLocaleOverrides(); | |
74 | |
75 } // namespace l10n_util | |
76 | |
77 #endif // UI_BASE_L10N_L10N_UTIL_WIN_H_ | |
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