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      1 // Copyright 2013 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_WEBUI_WEB_UI_UTIL_H_
      6 #define UI_BASE_WEBUI_WEB_UI_UTIL_H_
      7 
      8 #include <string>
      9 
     10 #include "base/strings/string_piece.h"
     11 #include "base/values.h"
     12 #include "ui/base/ui_base_export.h"
     13 #include "ui/base/window_open_disposition.h"
     14 
     15 class GURL;
     16 class SkBitmap;
     17 
     18 namespace webui {
     19 
     20 // Convenience routine to convert SkBitmap object to data url
     21 // so that it can be used in WebUI.
     22 UI_BASE_EXPORT std::string GetBitmapDataUrl(const SkBitmap& bitmap);
     23 
     24 // Convenience routine to get data url that corresponds to given
     25 // resource_id as a bitmap. This function does not check if the
     26 // resource for the |resource_id| is a bitmap, therefore it is the
     27 // caller's responsibility to make sure the resource is indeed a
     28 // bitmap. Returns empty string if a resource does not exist for given
     29 // |resource_id|.
     30 UI_BASE_EXPORT std::string GetBitmapDataUrlFromResource(int resource_id);
     31 
     32 // Extracts a disposition from click event arguments. |args| should contain
     33 // an integer button and booleans alt key, ctrl key, meta key, and shift key
     34 // (in that order), starting at |start_index|.
     35 UI_BASE_EXPORT WindowOpenDisposition
     36     GetDispositionFromClick(const base::ListValue* args, int start_index);
     37 
     38 // Pares a formatted scale factor string into float and sets to |scale_factor|.
     39 UI_BASE_EXPORT bool ParseScaleFactor(const base::StringPiece& identifier,
     40                                      float* scale_factor);
     41 
     42 // Parses a URL containing some path @{scale}x. If it does not contain a scale
     43 // factor then the default scale factor is returned.
     44 UI_BASE_EXPORT void ParsePathAndScale(const GURL& url,
     45                                       std::string* path,
     46                                       float* scale_factor);
     47 
     48 // Helper function to set the font family, size, and text direction into the
     49 // given dictionary.
     50 UI_BASE_EXPORT void SetFontAndTextDirection(
     51     base::DictionaryValue* localized_strings);
     52 
     53 }  // namespace webui
     54 
     55 #endif  // UI_BASE_WEBUI_WEB_UI_UTIL_H_
     56