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* Copyright (C) 2012 Google Inc. All rights reserved.
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#ifndef FindInPageCoordinates_h
#define FindInPageCoordinates_h
#include "platform/geometry/FloatRect.h"
namespace WebCore {
class Range;
class RenderObject;
}
namespace blink {
// Find-in-page coordinate conversion methods.
//
// This coordinate system is designed to give consistent tickmarks in cases where find matches
// are in scrollable areas but might not be visible (e.g. child frames, scroll:overflow).
// In these cases, using absolute positions might lead to tickmarks pointing outside the visible
// area of its container, which is counter-intuitive for users.
//
// Find-in-page coordinates are represented as normalized fractions of the main frame document with
// the property that they are built by composing the relative position of each renderer to the maximum
// effective layout size of its container all the way up the render tree. The resulting coordinates
// are scroll-independent, representing any contents scaled to the visible area of their container.
// The provided methods support scroll:overflow and are CSS position and transform-friendly.
WebCore::FloatRect findInPageRectFromAbsoluteRect(const WebCore::FloatRect&, const WebCore::RenderObject*);
WebCore::FloatRect findInPageRectFromRange(WebCore::Range*);
} // namespace blink
#endif