1 /*
2 * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2007 Rob Buis <buis@kde.org>
4 * Copyright (C) 2008 Dirk Schulze <krit@webkit.org>
5 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21 */
22
23 #include "config.h"
24
25 #if ENABLE(SVG)
26 #include "RenderSVGResource.h"
27
28 #include "RenderSVGResourceContainer.h"
29 #include "RenderSVGResourceSolidColor.h"
30 #include "SVGResources.h"
31 #include "SVGURIReference.h"
32
33 namespace WebCore {
34
requestPaintingResource(RenderSVGResourceMode mode,RenderObject * object,const RenderStyle * style,Color & fallbackColor)35 static inline RenderSVGResource* requestPaintingResource(RenderSVGResourceMode mode, RenderObject* object, const RenderStyle* style, Color& fallbackColor)
36 {
37 ASSERT(object);
38 ASSERT(style);
39
40 // If we have no style at all, ignore it.
41 const SVGRenderStyle* svgStyle = style->svgStyle();
42 if (!svgStyle)
43 return 0;
44
45 // If we have no fill/stroke, return 0.
46 if (mode == ApplyToFillMode) {
47 if (!svgStyle->hasFill())
48 return 0;
49 } else {
50 if (!svgStyle->hasStroke())
51 return 0;
52 }
53
54 SVGPaint* paint = mode == ApplyToFillMode ? svgStyle->fillPaint() : svgStyle->strokePaint();
55 ASSERT(paint);
56
57 SVGPaint::SVGPaintType paintType = paint->paintType();
58 if (paintType == SVGPaint::SVG_PAINTTYPE_NONE)
59 return 0;
60
61 Color color;
62 if (paintType == SVGPaint::SVG_PAINTTYPE_RGBCOLOR
63 || paintType == SVGPaint::SVG_PAINTTYPE_RGBCOLOR_ICCCOLOR
64 || paintType == SVGPaint::SVG_PAINTTYPE_URI_RGBCOLOR
65 || paintType == SVGPaint::SVG_PAINTTYPE_URI_RGBCOLOR_ICCCOLOR)
66 color = paint->color();
67 else if (paintType == SVGPaint::SVG_PAINTTYPE_CURRENTCOLOR || paintType == SVGPaint::SVG_PAINTTYPE_URI_CURRENTCOLOR)
68 color = style->visitedDependentColor(CSSPropertyColor);
69
70 if (style->insideLink() == InsideVisitedLink) {
71 RenderStyle* visitedStyle = style->getCachedPseudoStyle(VISITED_LINK);
72 ASSERT(visitedStyle);
73
74 if (SVGPaint* visitedPaint = mode == ApplyToFillMode ? visitedStyle->svgStyle()->fillPaint() : visitedStyle->svgStyle()->strokePaint()) {
75 // For SVG_PAINTTYPE_CURRENTCOLOR, 'color' already contains the 'visitedColor'.
76 if (visitedPaint->paintType() < SVGPaint::SVG_PAINTTYPE_URI_NONE && visitedPaint->paintType() != SVGPaint::SVG_PAINTTYPE_CURRENTCOLOR) {
77 const Color& visitedColor = visitedPaint->color();
78 if (visitedColor.isValid())
79 color = Color(visitedColor.red(), visitedColor.green(), visitedColor.blue(), color.alpha());
80 }
81 }
82 }
83
84 // If the primary resource is just a color, return immediately.
85 RenderSVGResourceSolidColor* colorResource = RenderSVGResource::sharedSolidPaintingResource();
86 if (paintType < SVGPaint::SVG_PAINTTYPE_URI_NONE) {
87 // If an invalid fill color is specified, fallback to fill/stroke="none".
88 if (!color.isValid())
89 return 0;
90
91 colorResource->setColor(color);
92 return colorResource;
93 }
94
95 // If no resources are associated with the given renderer, return the color resource.
96 SVGResources* resources = SVGResourcesCache::cachedResourcesForRenderObject(object);
97 if (!resources) {
98 // If a paint server is specified, and no or an invalid fallback color is given, default to fill/stroke="black".
99 if (!color.isValid())
100 color = Color::black;
101
102 colorResource->setColor(color);
103 return colorResource;
104 }
105
106 // If the requested resource is not available, return the color resource.
107 RenderSVGResource* uriResource = mode == ApplyToFillMode ? resources->fill() : resources->stroke();
108 if (!uriResource) {
109 // If a paint server is specified, and no or an invalid fallback color is given, default to fill/stroke="black".
110 if (!color.isValid())
111 color = Color::black;
112
113 colorResource->setColor(color);
114 return colorResource;
115 }
116
117 // The paint server resource exists, though it may be invalid (pattern with width/height=0). Pass the fallback color to our caller
118 // so it can use the solid color painting resource, if applyResource() on the URI resource failed.
119 fallbackColor = color;
120 return uriResource;
121 }
122
fillPaintingResource(RenderObject * object,const RenderStyle * style,Color & fallbackColor)123 RenderSVGResource* RenderSVGResource::fillPaintingResource(RenderObject* object, const RenderStyle* style, Color& fallbackColor)
124 {
125 return requestPaintingResource(ApplyToFillMode, object, style, fallbackColor);
126 }
127
strokePaintingResource(RenderObject * object,const RenderStyle * style,Color & fallbackColor)128 RenderSVGResource* RenderSVGResource::strokePaintingResource(RenderObject* object, const RenderStyle* style, Color& fallbackColor)
129 {
130 return requestPaintingResource(ApplyToStrokeMode, object, style, fallbackColor);
131 }
132
sharedSolidPaintingResource()133 RenderSVGResourceSolidColor* RenderSVGResource::sharedSolidPaintingResource()
134 {
135 static RenderSVGResourceSolidColor* s_sharedSolidPaintingResource = 0;
136 if (!s_sharedSolidPaintingResource)
137 s_sharedSolidPaintingResource = new RenderSVGResourceSolidColor;
138 return s_sharedSolidPaintingResource;
139 }
140
markForLayoutAndParentResourceInvalidation(RenderObject * object,bool needsLayout)141 void RenderSVGResource::markForLayoutAndParentResourceInvalidation(RenderObject* object, bool needsLayout)
142 {
143 ASSERT(object);
144 if (needsLayout)
145 object->setNeedsLayout(true);
146
147 // Invalidate resources in ancestor chain, if needed.
148 RenderObject* current = object->parent();
149 while (current) {
150 if (current->isSVGResourceContainer()) {
151 current->toRenderSVGResourceContainer()->removeAllClientsFromCache();
152 break;
153 }
154
155 current = current->parent();
156 }
157 }
158
159 }
160
161 #endif
162