2 * Copyright (C) 2005, 2007, 2008 Apple Inc. All rights reserved.
3 * Copyright (C) 2011 Google Inc. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
9 * * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
15 * * Neither the name of Google Inc. nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 #include "public/web/mac/WebSubstringUtil.h"
35 #import <Cocoa/Cocoa.h>
37 #include "bindings/v8/ExceptionStatePlaceholder.h"
38 #include "core/dom/Document.h"
39 #include "core/dom/Element.h"
40 #include "core/dom/Node.h"
41 #include "core/dom/Range.h"
42 #include "core/editing/FrameSelection.h"
43 #include "core/editing/PlainTextRange.h"
44 #include "core/editing/TextIterator.h"
45 #include "core/frame/FrameView.h"
46 #include "core/frame/LocalFrame.h"
47 #include "core/html/HTMLElement.h"
48 #include "core/rendering/HitTestResult.h"
49 #include "core/rendering/RenderObject.h"
50 #include "core/rendering/style/RenderStyle.h"
51 #include "platform/fonts/Font.h"
52 #include "platform/mac/ColorMac.h"
53 #include "public/platform/WebRect.h"
54 #include "public/web/WebHitTestResult.h"
55 #include "public/web/WebRange.h"
56 #include "public/web/WebView.h"
57 #include "web/WebLocalFrameImpl.h"
59 using namespace WebCore;
61 static NSAttributedString* attributedSubstringFromRange(const Range* range)
63 NSMutableAttributedString* string = [[NSMutableAttributedString alloc] init];
64 NSMutableDictionary* attrs = [NSMutableDictionary dictionary];
65 size_t length = range->endOffset() - range->startOffset();
67 unsigned position = 0;
68 for (TextIterator it(range); !it.atEnd() && [string length] < length; it.advance()) {
69 unsigned numCharacters = it.length();
73 Node* container = it.range()->startContainer();
74 RenderObject* renderer = container->renderer();
79 RenderStyle* style = renderer->style();
80 NSFont* font = style->font().primaryFont()->getNSFont();
81 // If the platform font can't be loaded, it's likely that the site is
82 // using a web font. For now, just use the default font instead.
83 // TODO(rsesek): Change the font activation flags to allow other processes
86 font = [NSFont systemFontOfSize:style->font().fontDescription().computedSize()];
87 [attrs setObject:font forKey:NSFontAttributeName];
89 if (style->visitedDependentColor(CSSPropertyColor).alpha())
90 [attrs setObject:nsColor(style->visitedDependentColor(CSSPropertyColor)) forKey:NSForegroundColorAttributeName];
92 [attrs removeObjectForKey:NSForegroundColorAttributeName];
93 if (style->visitedDependentColor(CSSPropertyBackgroundColor).alpha())
94 [attrs setObject:nsColor(style->visitedDependentColor(CSSPropertyBackgroundColor)) forKey:NSBackgroundColorAttributeName];
96 [attrs removeObjectForKey:NSBackgroundColorAttributeName];
98 Vector<UChar> characters;
99 it.appendTextTo(characters);
100 NSString* substring =
101 [[[NSString alloc] initWithCharacters:characters.data()
102 length:characters.size()] autorelease];
103 [string replaceCharactersInRange:NSMakeRange(position, 0)
104 withString:substring];
105 [string setAttributes:attrs range:NSMakeRange(position, numCharacters)];
106 position += numCharacters;
108 return [string autorelease];
113 NSAttributedString* WebSubstringUtil::attributedWordAtPoint(WebView* view, WebPoint point, WebPoint& baselinePoint)
115 HitTestResult result = view->hitTestResultAt(point);
116 if (!result.targetNode())
118 LocalFrame* frame = result.targetNode()->document().frame();
119 FrameView* frameView = frame->view();
121 RefPtrWillBeRawPtr<Range> range = frame->rangeForPoint(result.roundedPointInInnerNodeFrame());
125 // Expand to word under point.
126 VisibleSelection selection(range.get());
127 selection.expandUsingGranularity(WordGranularity);
128 RefPtrWillBeRawPtr<Range> wordRange = selection.toNormalizedRange();
130 // Convert to NSAttributedString.
131 NSAttributedString* string = attributedSubstringFromRange(wordRange.get());
133 // Compute bottom left corner and convert to AppKit coordinates.
134 IntRect stringRect = enclosingIntRect(wordRange->boundingRect());
135 IntPoint stringPoint = stringRect.minXMaxYCorner();
136 stringPoint.setY(frameView->height() - stringPoint.y());
138 // Adjust for the font's descender. AppKit wants the baseline point.
139 if ([string length]) {
140 NSDictionary* attributes = [string attributesAtIndex:0 effectiveRange:NULL];
141 NSFont* font = [attributes objectForKey:NSFontAttributeName];
143 stringPoint.move(0, ceil(-[font descender]));
146 baselinePoint = stringPoint;
150 NSAttributedString* WebSubstringUtil::attributedSubstringInRange(WebLocalFrame* webFrame, size_t location, size_t length)
152 LocalFrame* frame = toWebLocalFrameImpl(webFrame)->frame();
153 if (frame->view()->needsLayout())
154 frame->view()->layout();
156 Element* editable = frame->selection().rootEditableElementOrDocumentElement();
158 RefPtrWillBeRawPtr<Range> range(PlainTextRange(location, location + length).createRange(*editable));
162 return attributedSubstringFromRange(range.get());