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      1 // Copyright (c) 2012 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 CONTENT_RENDERER_DISAMBIGUATION_POPUP_HELPER_H_
      6 #define CONTENT_RENDERER_DISAMBIGUATION_POPUP_HELPER_H_
      7 
      8 #include "content/common/content_export.h"
      9 #include "third_party/WebKit/public/platform/WebVector.h"
     10 
     11 namespace gfx {
     12 class Rect;
     13 class Size;
     14 }
     15 
     16 namespace WebKit {
     17 struct WebRect;
     18 }
     19 
     20 namespace content {
     21 
     22 // Contains functions to calculate proper scaling factor and popup size
     23 class DisambiguationPopupHelper {
     24  public:
     25   CONTENT_EXPORT static float ComputeZoomAreaAndScaleFactor(
     26       const gfx::Rect& tap_rect,
     27       const WebKit::WebVector<WebKit::WebRect>& target_rects,
     28       const gfx::Size& screen_size,
     29       const gfx::Size& visible_content_size,
     30       float total_scale,
     31       gfx::Rect* zoom_rect);
     32 };
     33 
     34 }  // namespace content
     35 
     36 #endif  // CONTENT_RENDERER_DISAMBIGUATION_POPUP_HELPER_H_
     37