| /* |
| * Copyright (C) 2012 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef FindInPageCoordinates_h |
| #define FindInPageCoordinates_h |
| |
| #include "platform/geometry/FloatRect.h" |
| #include "web/WebExport.h" |
| |
| namespace blink { |
| class Range; |
| class LayoutObject; |
| |
| // 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 layoutObject to the maximum |
| // effective layout size of its container all the way up the layout 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. |
| |
| WEB_EXPORT FloatRect findInPageRectFromAbsoluteRect(const FloatRect&, const LayoutObject*); |
| WEB_EXPORT FloatRect findInPageRectFromRange(Range*); |
| |
| } // namespace blink |
| |
| #endif |
