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 15namespace 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. 22UI_BASE_EXPORT int GetExtendedStyles(); 23 24// TODO(xji): 25// This is a temporary name, it will eventually replace GetExtendedStyles 26UI_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. 32UI_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. 43UI_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. 51UI_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. 59UI_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. 64UI_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. 69UI_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. 73const std::vector<std::string>& GetLocaleOverrides(); 74 75} // namespace l10n_util 76 77#endif // UI_BASE_L10N_L10N_UTIL_WIN_H_ 78