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_ 78
