Use relative bounding boxes throughout Chrome accessibility

content/browser/accessibility/browser_accessibility.h

 // Copyright (c) 2012 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_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 125 matching lines @@
   // Returns nullptr if there are no children.
   BrowserAccessibility* PlatformDeepestFirstChild() const;
   // Returns nullptr if there are no children.
   BrowserAccessibility* PlatformDeepestLastChild() const;
 
   // Returns nullptr if there are no children.
   BrowserAccessibility* InternalDeepestFirstChild() const;
   // Returns nullptr if there are no children.
   BrowserAccessibility* InternalDeepestLastChild() const;
 
+  // Returns the bounds of this object in coordinates relative to this frame.
+  gfx::Rect GetFrameBoundsRect() const;
+
   // Returns the bounds of this object in coordinates relative to the
-  // top-left corner of the overall web area.
-  gfx::Rect GetLocalBoundsRect() const;
+  // page (specifically, the top-left corner of the topmost web contents).
+  gfx::Rect GetPageBoundsRect() const;
 
   // Returns the bounds of this object in screen coordinates.
-  gfx::Rect GetGlobalBoundsRect() const;
+  gfx::Rect GetScreenBoundsRect() const;
 
   // Returns the bounds of the given range in coordinates relative to the
   // top-left corner of the overall web area. Only valid when the
   // role is WebAXRoleStaticText.
-  gfx::Rect GetLocalBoundsForRange(int start, int len) const;
+  gfx::Rect GetPageBoundsForRange(int start, int len) const;
 
-  // Same as GetLocalBoundsForRange, in screen coordinates. Only valid when
+  // Same as GetPageBoundsForRange, in screen coordinates. Only valid when
   // the role is WebAXRoleStaticText.
-  gfx::Rect GetGlobalBoundsForRange(int start, int len) const;
+  gfx::Rect GetScreenBoundsForRange(int start, int len) const;
 
   // This is to handle the cases such as ARIA textbox, where the value should
   // be calculated from the object's inner text.
   virtual base::string16 GetValue() const;
 
   // Starting at the given character offset, locates the start of the next or
   // previous line and returns its character offset.
   int GetLineStartBoundary(int start,
                            ui::TextBoundaryDirection direction,
                            ui::AXTextAffinity affinity) const;
@@ skipping 47 matching lines @@
   // accessibility APIs.
   uint32_t InternalChildCount() const;
   BrowserAccessibility* InternalGetChild(uint32_t child_index) const;
   BrowserAccessibility* InternalGetParent() const;
 
   BrowserAccessibility* GetParent() const;
   int32_t GetIndexInParent() const;
 
   int32_t GetId() const;
   const ui::AXNodeData& GetData() const;
-  gfx::Rect GetLocation() const;
+  gfx::RectF GetLocation() const;
   int32_t GetRole() const;
   int32_t GetState() const;
 
   typedef base::StringPairs HtmlAttributes;
   const HtmlAttributes& GetHtmlAttributes() const;
 
   // Returns true if this is a native platform-specific object, vs a
   // cross-platform generic object. Don't call ToBrowserAccessibilityXXX if
   // IsNative returns false.
   virtual bool IsNative() const;
@@ skipping 118 matching lines @@
   // |GetInnerText| recursively includes all the text from descendants such as
   // text found in any embedded object. In contrast, |GetText| might include a
   // special character in the place of every embedded object instead of its
   // text, depending on the platform.
   base::string16 GetInnerText() const;
 
   // If a bounding rectangle is empty, compute it based on the union of its
   // children, since most accessibility APIs don't like elements with no
   // bounds, but "virtual" elements in the accessibility tree that don't
   // correspond to a layed-out element sometimes don't have bounds.
-  void FixEmptyBounds(gfx::Rect* bounds) const;
+  void FixEmptyBounds(gfx::RectF* bounds) const;
 
   // Convert the bounding rectangle of an element (which is relative to
-  // its nearest scrollable ancestor) to local bounds (which are relative
-  // to the top of the web accessibility tree).
-  gfx::Rect ElementBoundsToLocalBounds(gfx::Rect bounds) const;
+  // its nearest scrollable ancestor) to absolute bounds, either in
+  // page coordinates (when |frameOnly| is false), or in frame coordinates
+  // (when |frameOnly| is true).
+  gfx::Rect RelativeToAbsoluteBounds(gfx::RectF bounds, bool frame_only) const;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibility);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_