| // Copyright (c) 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_BROWSER_RENDERER_HOST_FRAME_METADATA_UTIL_H_ |
| #define CONTENT_BROWSER_RENDERER_HOST_FRAME_METADATA_UTIL_H_ |
| |
| #include "content/common/content_export.h" |
| |
| namespace gfx { |
| class SizeF; |
| } |
| |
| namespace content { |
| |
| // Decides whether frame metadata corresponds to mobile-optimized content. |
| // By default returns |false|, except for the following cases: |
| // - page that has a width=device-width or narrower viewport |
| // (indicating that this is a mobile-optimized or responsive web design); |
| // - page that prevents zooming in or out. |
| CONTENT_EXPORT bool IsMobileOptimizedFrame( |
| float page_scale_factor, |
| float min_page_scale_factor, |
| float max_page_scale_factor, |
| const gfx::SizeF& scrollable_viewport_size, |
| const gfx::SizeF& root_layer_size); |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_RENDERER_HOST_FRAME_METADATA_UTIL_H_ |