1/*
2 * Copyright (C) 2006 Apple Inc.
3 * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
4 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB. If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 */
21
22#include "config.h"
23#include "RenderSVGBlock.h"
24
25#include "RenderSVGResource.h"
26#include "SVGResourcesCache.h"
27#include "StyleInheritedData.h"
28#include <wtf/IsoMallocInlines.h>
29
30namespace WebCore {
31
32WTF_MAKE_ISO_ALLOCATED_IMPL(RenderSVGBlock);
33
34RenderSVGBlock::RenderSVGBlock(SVGGraphicsElement& element, RenderStyle&& style)
35 : RenderBlockFlow(element, WTFMove(style))
36{
37}
38
39LayoutRect RenderSVGBlock::visualOverflowRect() const
40{
41 LayoutRect borderRect = borderBoxRect();
42
43 if (const ShadowData* textShadow = style().textShadow())
44 textShadow->adjustRectForShadow(borderRect);
45
46 return borderRect;
47}
48
49void RenderSVGBlock::updateFromStyle()
50{
51 RenderBlockFlow::updateFromStyle();
52
53 // RenderSVGlock, used by Render(SVGText|ForeignObject), is not allowed to call setHasOverflowClip(true).
54 // RenderBlock assumes a layer to be present when the overflow clip functionality is requested. Both
55 // Render(SVGText|ForeignObject) return 'false' on 'requiresLayer'. Fine for RenderSVGText.
56 //
57 // If we want to support overflow rules for <foreignObject> we can choose between two solutions:
58 // a) make RenderSVGForeignObject require layers and SVG layer aware
59 // b) reactor overflow logic out of RenderLayer (as suggested by dhyatt), which is a large task
60 //
61 // Until this is resolved, disable overflow support. Opera/FF don't support it as well at the moment (Feb 2010).
62 //
63 // Note: This does NOT affect overflow handling on outer/inner <svg> elements - this is handled
64 // manually by RenderSVGRoot - which owns the documents enclosing root layer and thus works fine.
65 setHasOverflowClip(false);
66}
67
68void RenderSVGBlock::absoluteRects(Vector<IntRect>&, const LayoutPoint&) const
69{
70 // This code path should never be taken for SVG, as we're assuming useTransforms=true everywhere, absoluteQuads should be used.
71 ASSERT_NOT_REACHED();
72}
73
74void RenderSVGBlock::willBeDestroyed()
75{
76 SVGResourcesCache::clientDestroyed(*this);
77 RenderBlockFlow::willBeDestroyed();
78}
79
80void RenderSVGBlock::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
81{
82 if (diff == StyleDifference::Layout)
83 setNeedsBoundariesUpdate();
84 RenderBlockFlow::styleDidChange(diff, oldStyle);
85 SVGResourcesCache::clientStyleChanged(*this, diff, style());
86}
87
88}
89