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1 // Copyright (c) 2006-2008 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 CHROME_COMMON_GFX_FAVICON_SIZE_H__ | |
6 #define CHROME_COMMON_GFX_FAVICON_SIZE_H__ | |
7 | |
8 #include "base/compiler_specific.h" | |
9 | |
10 // Size (along each axis) of the favicon. | |
11 const int kFavIconSize = 16; | |
12 | |
13 // If the width or height is bigger than the favicon size, a new width/height | |
14 // is calculated and returned in width/height that maintains the aspect | |
15 // ratio of the supplied values. | |
16 static void calc_favicon_target_size(int* width, int* height) ALLOW_UNUSED; | |
17 | |
18 // static | |
19 void calc_favicon_target_size(int* width, int* height) { | |
20 if (*width > kFavIconSize || *height > kFavIconSize) { | |
21 // Too big, resize it maintaining the aspect ratio. | |
22 float aspect_ratio = static_cast<float>(*width) / | |
23 static_cast<float>(*height); | |
24 *height = kFavIconSize; | |
25 *width = static_cast<int>(aspect_ratio * *height); | |
26 if (*width > kFavIconSize) { | |
27 *width = kFavIconSize; | |
28 *height = static_cast<int>(*width / aspect_ratio); | |
29 } | |
30 } | |
31 } | |
32 | |
33 #endif // CHROME_COMMON_GFX_FAVICON_SIZE_H__ | |
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