extensions/browser/image_util.cc

   1 // Copyright 2014 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 #include "extensions/browser/image_util.h"
   6
   7 #include <stdint.h>
   8 #include <vector>
   9
  10 #include "base/strings/string_number_conversions.h"
  11 #include "third_party/skia/include/core/SkColor.h"
  12
  13 namespace extensions {
  14 namespace image_util {
  15
  16 bool ParseCSSColorString(const std::string& color_string, SkColor* result) {
  17   std::string formatted_color;
  18   // Check the string for incorrect formatting.
  19   if (color_string.empty() || color_string[0] != '#')
  20     return false;
  21
  22   // Convert the string from #FFF format to #FFFFFF format.
  23   if (color_string.length() == 4) {
  24     for (size_t i = 1; i < 4; ++i) {
  25       formatted_color += color_string[i];
  26       formatted_color += color_string[i];
  27     }
  28   } else if (color_string.length() == 7) {
  29     formatted_color = color_string.substr(1, 6);
  30   } else {
  31     return false;
  32   }
  33
  34   // Convert the string to an integer and make sure it is in the correct value
  35   // range.
  36   std::vector<uint8_t> color_bytes;
  37   if (!base::HexStringToBytes(formatted_color, &color_bytes))
  38     return false;
  39
  40   *result = SkColorSetARGB(255, color_bytes[0], color_bytes[1], color_bytes[2]);
  41   return true;
  42 }
  43
  44 }  // namespace image_util
  45 }  // namespace extensions