1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/*
* Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2007 Rob Buis <buis@kde.org>
* Copyright (C) 2008 Dirk Schulze <krit@webkit.org>
* Copyright (C) Research In Motion Limited 2010. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "core/rendering/svg/RenderSVGResource.h"
#include "core/frame/FrameView.h"
#include "core/frame/LocalFrame.h"
#include "core/rendering/svg/RenderSVGResourceClipper.h"
#include "core/rendering/svg/RenderSVGResourceFilter.h"
#include "core/rendering/svg/RenderSVGResourceMasker.h"
#include "core/rendering/svg/RenderSVGResourceSolidColor.h"
#include "core/rendering/svg/SVGResources.h"
#include "core/rendering/svg/SVGResourcesCache.h"
namespace WebCore {
static inline bool inheritColorFromParentStyle(RenderObject* object, bool applyToFill, Color& color)
{
if (!object->parent() || !object->parent()->style())
return false;
const SVGRenderStyle* parentSVGStyle = object->parent()->style()->svgStyle();
SVGPaint::SVGPaintType paintType = applyToFill ? parentSVGStyle->fillPaintType() : parentSVGStyle->strokePaintType();
if (paintType != SVGPaint::SVG_PAINTTYPE_RGBCOLOR && paintType != SVGPaint::SVG_PAINTTYPE_RGBCOLOR_ICCCOLOR)
return false;
color = applyToFill ? parentSVGStyle->fillPaintColor() : parentSVGStyle->strokePaintColor();
return true;
}
static inline RenderSVGResource* requestPaintingResource(RenderSVGResourceMode mode, RenderObject* object, const RenderStyle* style, bool& hasFallback)
{
ASSERT(object);
ASSERT(style);
hasFallback = false;
// If we have no style at all, ignore it.
const SVGRenderStyle* svgStyle = style->svgStyle();
if (!svgStyle)
return 0;
bool isRenderingMask = false;
if (object->frame() && object->frame()->view())
isRenderingMask = object->frame()->view()->paintBehavior() & PaintBehaviorRenderingSVGMask;
// If we have no fill/stroke, return 0.
if (mode == ApplyToFillMode) {
// When rendering the mask for a RenderSVGResourceClipper, always use the initial fill paint server, and ignore stroke.
if (isRenderingMask) {
RenderSVGResourceSolidColor* colorResource = RenderSVGResource::sharedSolidPaintingResource();
colorResource->setColor(SVGRenderStyle::initialFillPaintColor());
return colorResource;
}
if (!svgStyle->hasFill())
return 0;
} else {
if (!svgStyle->hasStroke() || isRenderingMask)
return 0;
}
bool applyToFill = mode == ApplyToFillMode;
SVGPaint::SVGPaintType paintType = applyToFill ? svgStyle->fillPaintType() : svgStyle->strokePaintType();
ASSERT(paintType != SVGPaint::SVG_PAINTTYPE_NONE);
Color color;
bool hasColor = false;
switch (paintType) {
case SVGPaint::SVG_PAINTTYPE_CURRENTCOLOR:
case SVGPaint::SVG_PAINTTYPE_RGBCOLOR:
case SVGPaint::SVG_PAINTTYPE_RGBCOLOR_ICCCOLOR:
case SVGPaint::SVG_PAINTTYPE_URI_CURRENTCOLOR:
case SVGPaint::SVG_PAINTTYPE_URI_RGBCOLOR:
case SVGPaint::SVG_PAINTTYPE_URI_RGBCOLOR_ICCCOLOR:
color = applyToFill ? svgStyle->fillPaintColor() : svgStyle->strokePaintColor();
hasColor = true;
default:
break;
}
if (style->insideLink() == InsideVisitedLink) {
// FIXME: This code doesn't support the uri component of the visited link paint, https://bugs.webkit.org/show_bug.cgi?id=70006
SVGPaint::SVGPaintType visitedPaintType = applyToFill ? svgStyle->visitedLinkFillPaintType() : svgStyle->visitedLinkStrokePaintType();
// For SVG_PAINTTYPE_CURRENTCOLOR, 'color' already contains the 'visitedColor'.
if (visitedPaintType < SVGPaint::SVG_PAINTTYPE_URI_NONE && visitedPaintType != SVGPaint::SVG_PAINTTYPE_CURRENTCOLOR) {
const Color& visitedColor = applyToFill ? svgStyle->visitedLinkFillPaintColor() : svgStyle->visitedLinkStrokePaintColor();
color = Color(visitedColor.red(), visitedColor.green(), visitedColor.blue(), color.alpha());
hasColor = true;
}
}
// If the primary resource is just a color, return immediately.
RenderSVGResourceSolidColor* colorResource = RenderSVGResource::sharedSolidPaintingResource();
if (paintType < SVGPaint::SVG_PAINTTYPE_URI_NONE) {
if (!hasColor && !inheritColorFromParentStyle(object, applyToFill, color))
return 0;
colorResource->setColor(color);
return colorResource;
}
// If no resources are associated with the given renderer, return the color resource.
SVGResources* resources = SVGResourcesCache::cachedResourcesForRenderObject(object);
if (!resources) {
if (paintType == SVGPaint::SVG_PAINTTYPE_URI_NONE || (!hasColor && !inheritColorFromParentStyle(object, applyToFill, color)))
return 0;
colorResource->setColor(color);
return colorResource;
}
// If the requested resource is not available, return the color resource.
RenderSVGResource* uriResource = mode == ApplyToFillMode ? resources->fill() : resources->stroke();
if (!uriResource) {
if (!hasColor && !inheritColorFromParentStyle(object, applyToFill, color))
return 0;
colorResource->setColor(color);
return colorResource;
}
// The paint server resource exists, though it may be invalid (pattern with width/height=0). Pass the fallback color to our caller
// via sharedSolidPaintingResource so it can use the solid color painting resource, if applyResource() on the URI resource failed.
if (hasColor) {
colorResource->setColor(color);
hasFallback = true;
}
return uriResource;
}
RenderSVGResource* RenderSVGResource::fillPaintingResource(RenderObject* object, const RenderStyle* style, bool& hasFallback)
{
return requestPaintingResource(ApplyToFillMode, object, style, hasFallback);
}
RenderSVGResource* RenderSVGResource::strokePaintingResource(RenderObject* object, const RenderStyle* style, bool& hasFallback)
{
return requestPaintingResource(ApplyToStrokeMode, object, style, hasFallback);
}
RenderSVGResourceSolidColor* RenderSVGResource::sharedSolidPaintingResource()
{
static RenderSVGResourceSolidColor* s_sharedSolidPaintingResource = 0;
if (!s_sharedSolidPaintingResource)
s_sharedSolidPaintingResource = new RenderSVGResourceSolidColor;
return s_sharedSolidPaintingResource;
}
static inline void removeFromCacheAndInvalidateDependencies(RenderObject* object, bool needsLayout)
{
ASSERT(object);
if (SVGResources* resources = SVGResourcesCache::cachedResourcesForRenderObject(object)) {
if (RenderSVGResourceFilter* filter = resources->filter())
filter->removeClientFromCache(object);
if (RenderSVGResourceMasker* masker = resources->masker())
masker->removeClientFromCache(object);
if (RenderSVGResourceClipper* clipper = resources->clipper())
clipper->removeClientFromCache(object);
}
if (!object->node() || !object->node()->isSVGElement())
return;
SVGElementSet* dependencies = object->document().accessSVGExtensions().setOfElementsReferencingTarget(toSVGElement(object->node()));
if (!dependencies)
return;
// We allow cycles in SVGDocumentExtensions reference sets in order to avoid expensive
// reference graph adjustments on changes, so we need to break possible cycles here.
// This strong reference is safe, as it is guaranteed that this set will be emptied
// at the end of recursion.
typedef WillBeHeapHashSet<RawPtrWillBeMember<SVGElement> > SVGElementSet;
DEFINE_STATIC_LOCAL(OwnPtrWillBePersistent<SVGElementSet>, invalidatingDependencies, (adoptPtrWillBeNoop(new SVGElementSet)));
SVGElementSet::iterator end = dependencies->end();
for (SVGElementSet::iterator it = dependencies->begin(); it != end; ++it) {
if (RenderObject* renderer = (*it)->renderer()) {
if (UNLIKELY(!invalidatingDependencies->add(*it).isNewEntry)) {
// Reference cycle: we are in process of invalidating this dependant.
continue;
}
RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer, needsLayout);
invalidatingDependencies->remove(*it);
}
}
}
void RenderSVGResource::markForLayoutAndParentResourceInvalidation(RenderObject* object, bool needsLayout)
{
ASSERT(object);
ASSERT(object->node());
if (needsLayout && !object->documentBeingDestroyed())
object->setNeedsLayoutAndFullPaintInvalidation();
removeFromCacheAndInvalidateDependencies(object, needsLayout);
// Invalidate resources in ancestor chain, if needed.
RenderObject* current = object->parent();
while (current) {
removeFromCacheAndInvalidateDependencies(current, needsLayout);
if (current->isSVGResourceContainer()) {
// This will process the rest of the ancestors.
toRenderSVGResourceContainer(current)->removeAllClientsFromCache();
break;
}
current = current->parent();
}
}
}
|
