1/*
2 * Copyright (C) 2007 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#import "config.h"
27#import "FrameSelection.h"
28
29#import "AXObjectCache.h"
30#import "Frame.h"
31#import "RenderView.h"
32
33namespace WebCore {
34
35static CGRect accessibilityConvertScreenRect(CGRect bounds)
36{
37    NSArray *screens = [NSScreen screens];
38    if ([screens count]) {
39        CGFloat screenHeight = NSHeight([(NSScreen *)[screens objectAtIndex:0] frame]);
40        bounds.origin.y = (screenHeight - (bounds.origin.y + bounds.size.height));
41    } else
42        bounds = CGRectZero;
43
44    return bounds;
45}
46
47
48void FrameSelection::notifyAccessibilityForSelectionChange()
49{
50    Document* document = m_frame->document();
51
52    if (m_selection.start().isNotNull() && m_selection.end().isNotNull()) {
53        if (AXObjectCache* cache = document->existingAXObjectCache())
54            cache->postNotification(m_selection.start().deprecatedNode()->renderer(), AXObjectCache::AXSelectedTextChanged, false);
55    }
56
57    // if zoom feature is enabled, insertion point changes should update the zoom
58    if (!UAZoomEnabled() || !m_selection.isCaret())
59        return;
60
61    RenderView* renderView = document->renderView();
62    if (!renderView)
63        return;
64    FrameView* frameView = m_frame->view();
65    if (!frameView)
66        return;
67
68    IntRect selectionRect = absoluteCaretBounds();
69    IntRect viewRect = pixelSnappedIntRect(renderView->viewRect());
70
71    selectionRect = frameView->contentsToScreen(selectionRect);
72    viewRect = frameView->contentsToScreen(viewRect);
73    CGRect cgCaretRect = CGRectMake(selectionRect.x(), selectionRect.y(), selectionRect.width(), selectionRect.height());
74    CGRect cgViewRect = CGRectMake(viewRect.x(), viewRect.y(), viewRect.width(), viewRect.height());
75    cgCaretRect = accessibilityConvertScreenRect(cgCaretRect);
76    cgViewRect = accessibilityConvertScreenRect(cgViewRect);
77
78    UAZoomChangeFocus(&cgViewRect, &cgCaretRect, kUAZoomFocusTypeInsertionPoint);
79}
80
81} // namespace WebCore
82