components/favicon_base/fallback_icon_style.h

   1 // Copyright 2015 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 COMPONENTS_FAVICON_BASE_FALLBACK_ICON_STYLE_H_
   6 #define COMPONENTS_FAVICON_BASE_FALLBACK_ICON_STYLE_H_
   7
   8 #include "third_party/skia/include/core/SkColor.h"
   9
  10 namespace favicon_base {
  11
  12 // Styling specifications of a fallback icon. The icon is composed of a solid
  13 // rounded square containing a single letter. The specification excludes the
  14 // icon URL and size, which are given when the icon is rendered.
  15 struct FallbackIconStyle {
  16   FallbackIconStyle();
  17   ~FallbackIconStyle();
  18
  19   // If any member changes, also update FallbackIconStyleBuilder.
  20
  21   // Icon background fill color.
  22   SkColor background_color;
  23
  24   // Icon text color.
  25   SkColor text_color;
  26
  27   // Ratio in [0.0, 1.0] of the text font size (pixels) to the icon size.
  28   double font_size_ratio;
  29
  30   // The roundness of the icon's corners. 0 => square icon, 1 => circle icon.
  31   double roundness;
  32 };
  33
  34 // Reassigns |style|'s |text_color| to matches well against |background_color|.
  35 void MatchFallbackIconTextColorAgainstBackgroundColor(FallbackIconStyle* style);
  36
  37 // Returns whether |style| values are within bounds.
  38 bool ValidateFallbackIconStyle(const FallbackIconStyle& style);
  39
  40 }  // namespace favicon_base
  41
  42 #endif  // COMPONENTS_FAVICON_BASE_FALLBACK_ICON_STYLE_H_