1 /*
2 * Copyright (C) 2006 Apple Computer, 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
24 #if ENABLE(SVG)
25 #include "RenderSVGBlock.h"
26
27 #include "RenderSVGResource.h"
28 #include "SVGElement.h"
29
30 namespace WebCore {
31
RenderSVGBlock(SVGElement * node)32 RenderSVGBlock::RenderSVGBlock(SVGElement* node)
33 : RenderBlock(node)
34 {
35 }
36
setStyle(PassRefPtr<RenderStyle> style)37 void RenderSVGBlock::setStyle(PassRefPtr<RenderStyle> style)
38 {
39 RefPtr<RenderStyle> useStyle = style;
40
41 // SVG text layout code expects us to be a block-level style element.
42 if (useStyle->isDisplayInlineType()) {
43 RefPtr<RenderStyle> newStyle = RenderStyle::create();
44 newStyle->inheritFrom(useStyle.get());
45 newStyle->setDisplay(BLOCK);
46 useStyle = newStyle.release();
47 }
48
49 RenderBlock::setStyle(useStyle.release());
50 }
51
updateBoxModelInfoFromStyle()52 void RenderSVGBlock::updateBoxModelInfoFromStyle()
53 {
54 RenderBlock::updateBoxModelInfoFromStyle();
55
56 // RenderSVGlock, used by Render(SVGText|ForeignObject), is not allowed to call setHasOverflowClip(true).
57 // RenderBlock assumes a layer to be present when the overflow clip functionality is requested. Both
58 // Render(SVGText|ForeignObject) return 'false' on 'requiresLayer'. Fine for RenderSVGText.
59 //
60 // If we want to support overflow rules for <foreignObject> we can choose between two solutions:
61 // a) make RenderSVGForeignObject require layers and SVG layer aware
62 // b) reactor overflow logic out of RenderLayer (as suggested by dhyatt), which is a large task
63 //
64 // Until this is resolved, disable overflow support. Opera/FF don't support it as well at the moment (Feb 2010).
65 //
66 // Note: This does NOT affect overflow handling on outer/inner <svg> elements - this is handled
67 // manually by RenderSVGRoot - which owns the documents enclosing root layer and thus works fine.
68 setHasOverflowClip(false);
69 }
70
absoluteRects(Vector<IntRect> &,int,int)71 void RenderSVGBlock::absoluteRects(Vector<IntRect>&, int, int)
72 {
73 // This code path should never be taken for SVG, as we're assuming useTransforms=true everywhere, absoluteQuads should be used.
74 ASSERT_NOT_REACHED();
75 }
76
destroy()77 void RenderSVGBlock::destroy()
78 {
79 SVGResourcesCache::clientDestroyed(this);
80 RenderBlock::destroy();
81 }
82
styleWillChange(StyleDifference diff,const RenderStyle * newStyle)83 void RenderSVGBlock::styleWillChange(StyleDifference diff, const RenderStyle* newStyle)
84 {
85 if (diff == StyleDifferenceLayout)
86 setNeedsBoundariesUpdate();
87 RenderBlock::styleWillChange(diff, newStyle);
88 }
89
styleDidChange(StyleDifference diff,const RenderStyle * oldStyle)90 void RenderSVGBlock::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
91 {
92 RenderBlock::styleDidChange(diff, oldStyle);
93 SVGResourcesCache::clientStyleChanged(this, diff, style());
94 }
95
updateFromElement()96 void RenderSVGBlock::updateFromElement()
97 {
98 RenderBlock::updateFromElement();
99 SVGResourcesCache::clientUpdatedFromElement(this, style());
100 }
101
102 }
103
104 #endif
105