1 /*
2 Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3 2004, 2005, 2010 Rob Buis <buis@kde.org>
4 Copyright (C) Research In Motion Limited 2010. All rights reserved.
5
6 Based on khtml code by:
7 Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
8 Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
9 Copyright (C) 2002-2003 Dirk Mueller (mueller@kde.org)
10 Copyright (C) 2002 Apple Computer, Inc.
11
12 This library is free software; you can redistribute it and/or
13 modify it under the terms of the GNU Library General Public
14 License as published by the Free Software Foundation; either
15 version 2 of the License, or (at your option) any later version.
16
17 This library is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 Library General Public License for more details.
21
22 You should have received a copy of the GNU Library General Public License
23 along with this library; see the file COPYING.LIB. If not, write to
24 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
25 Boston, MA 02110-1301, USA.
26 */
27
28 #include "config.h"
29
30 #include "core/rendering/style/SVGRenderStyle.h"
31
32
33 using namespace std;
34
35 namespace WebCore {
36
SVGRenderStyle()37 SVGRenderStyle::SVGRenderStyle()
38 {
39 static SVGRenderStyle* defaultStyle = new SVGRenderStyle(CreateDefault);
40
41 fill = defaultStyle->fill;
42 stroke = defaultStyle->stroke;
43 stops = defaultStyle->stops;
44 misc = defaultStyle->misc;
45 inheritedResources = defaultStyle->inheritedResources;
46 resources = defaultStyle->resources;
47
48 setBitDefaults();
49 }
50
SVGRenderStyle(CreateDefaultType)51 SVGRenderStyle::SVGRenderStyle(CreateDefaultType)
52 {
53 setBitDefaults();
54
55 fill.init();
56 stroke.init();
57 stops.init();
58 misc.init();
59 inheritedResources.init();
60 resources.init();
61 }
62
SVGRenderStyle(const SVGRenderStyle & other)63 SVGRenderStyle::SVGRenderStyle(const SVGRenderStyle& other)
64 : RefCounted<SVGRenderStyle>()
65 {
66 fill = other.fill;
67 stroke = other.stroke;
68 stops = other.stops;
69 misc = other.misc;
70 inheritedResources = other.inheritedResources;
71 resources = other.resources;
72
73 svg_inherited_flags = other.svg_inherited_flags;
74 svg_noninherited_flags = other.svg_noninherited_flags;
75 }
76
~SVGRenderStyle()77 SVGRenderStyle::~SVGRenderStyle()
78 {
79 }
80
operator ==(const SVGRenderStyle & other) const81 bool SVGRenderStyle::operator==(const SVGRenderStyle& other) const
82 {
83 return fill == other.fill
84 && stroke == other.stroke
85 && stops == other.stops
86 && misc == other.misc
87 && inheritedResources == other.inheritedResources
88 && resources == other.resources
89 && svg_inherited_flags == other.svg_inherited_flags
90 && svg_noninherited_flags == other.svg_noninherited_flags;
91 }
92
inheritedNotEqual(const SVGRenderStyle * other) const93 bool SVGRenderStyle::inheritedNotEqual(const SVGRenderStyle* other) const
94 {
95 return fill != other->fill
96 || stroke != other->stroke
97 || inheritedResources != other->inheritedResources
98 || svg_inherited_flags != other->svg_inherited_flags;
99 }
100
inheritFrom(const SVGRenderStyle * svgInheritParent)101 void SVGRenderStyle::inheritFrom(const SVGRenderStyle* svgInheritParent)
102 {
103 if (!svgInheritParent)
104 return;
105
106 fill = svgInheritParent->fill;
107 stroke = svgInheritParent->stroke;
108 inheritedResources = svgInheritParent->inheritedResources;
109
110 svg_inherited_flags = svgInheritParent->svg_inherited_flags;
111 }
112
copyNonInheritedFrom(const SVGRenderStyle * other)113 void SVGRenderStyle::copyNonInheritedFrom(const SVGRenderStyle* other)
114 {
115 svg_noninherited_flags = other->svg_noninherited_flags;
116 stops = other->stops;
117 misc = other->misc;
118 resources = other->resources;
119 }
120
diff(const SVGRenderStyle * other) const121 StyleDifference SVGRenderStyle::diff(const SVGRenderStyle* other) const
122 {
123 StyleDifference styleDifference;
124
125 if (diffNeedsLayoutAndRepaint(other)) {
126 styleDifference.setNeedsFullLayout();
127 styleDifference.setNeedsRepaintObject();
128 } else if (diffNeedsRepaint(other)) {
129 styleDifference.setNeedsRepaintObject();
130 }
131
132 return styleDifference;
133 }
134
diffNeedsLayoutAndRepaint(const SVGRenderStyle * other) const135 bool SVGRenderStyle::diffNeedsLayoutAndRepaint(const SVGRenderStyle* other) const
136 {
137 // If resources change, we need a relayout, as the presence of resources influences the repaint rect.
138 if (resources != other->resources)
139 return true;
140
141 // If markers change, we need a relayout, as marker boundaries are cached in RenderSVGPath.
142 if (inheritedResources != other->inheritedResources)
143 return true;
144
145 // All text related properties influence layout.
146 if (svg_inherited_flags._textAnchor != other->svg_inherited_flags._textAnchor
147 || svg_inherited_flags._writingMode != other->svg_inherited_flags._writingMode
148 || svg_inherited_flags._glyphOrientationHorizontal != other->svg_inherited_flags._glyphOrientationHorizontal
149 || svg_inherited_flags._glyphOrientationVertical != other->svg_inherited_flags._glyphOrientationVertical
150 || svg_noninherited_flags.f._alignmentBaseline != other->svg_noninherited_flags.f._alignmentBaseline
151 || svg_noninherited_flags.f._dominantBaseline != other->svg_noninherited_flags.f._dominantBaseline
152 || svg_noninherited_flags.f._baselineShift != other->svg_noninherited_flags.f._baselineShift)
153 return true;
154
155 // Text related properties influence layout.
156 if (misc->baselineShiftValue != other->misc->baselineShiftValue)
157 return true;
158
159 // These properties affect the cached stroke bounding box rects.
160 if (svg_inherited_flags._capStyle != other->svg_inherited_flags._capStyle
161 || svg_inherited_flags._joinStyle != other->svg_inherited_flags._joinStyle)
162 return true;
163
164 // vector-effect changes require a re-layout.
165 if (svg_noninherited_flags.f._vectorEffect != other->svg_noninherited_flags.f._vectorEffect)
166 return true;
167
168 // Some stroke properties, requires relayouts, as the cached stroke boundaries need to be recalculated.
169 if (stroke.get() != other->stroke.get()) {
170 if (stroke->width != other->stroke->width
171 || stroke->paintType != other->stroke->paintType
172 || stroke->paintColor != other->stroke->paintColor
173 || stroke->paintUri != other->stroke->paintUri
174 || stroke->miterLimit != other->stroke->miterLimit
175 || stroke->dashArray != other->stroke->dashArray
176 || stroke->dashOffset != other->stroke->dashOffset
177 || stroke->visitedLinkPaintColor != other->stroke->visitedLinkPaintColor
178 || stroke->visitedLinkPaintUri != other->stroke->visitedLinkPaintUri
179 || stroke->visitedLinkPaintType != other->stroke->visitedLinkPaintType)
180 return true;
181 }
182
183 return false;
184 }
185
diffNeedsRepaint(const SVGRenderStyle * other) const186 bool SVGRenderStyle::diffNeedsRepaint(const SVGRenderStyle* other) const
187 {
188 if (stroke->opacity != other->stroke->opacity)
189 return true;
190
191 // Painting related properties only need repaints.
192 if (misc.get() != other->misc.get()) {
193 if (misc->floodColor != other->misc->floodColor
194 || misc->floodOpacity != other->misc->floodOpacity
195 || misc->lightingColor != other->misc->lightingColor)
196 return true;
197 }
198
199 // If fill changes, we just need to repaint. Fill boundaries are not influenced by this, only by the Path, that RenderSVGPath contains.
200 if (fill.get() != other->fill.get()) {
201 if (fill->paintType != other->fill->paintType
202 || fill->paintColor != other->fill->paintColor
203 || fill->paintUri != other->fill->paintUri
204 || fill->opacity != other->fill->opacity)
205 return true;
206 }
207
208 // If gradient stops change, we just need to repaint. Style updates are already handled through RenderSVGGradientSTop.
209 if (stops != other->stops)
210 return true;
211
212 // Changes of these flags only cause repaints.
213 if (svg_inherited_flags._colorRendering != other->svg_inherited_flags._colorRendering
214 || svg_inherited_flags._shapeRendering != other->svg_inherited_flags._shapeRendering
215 || svg_inherited_flags._clipRule != other->svg_inherited_flags._clipRule
216 || svg_inherited_flags._fillRule != other->svg_inherited_flags._fillRule
217 || svg_inherited_flags._colorInterpolation != other->svg_inherited_flags._colorInterpolation
218 || svg_inherited_flags._colorInterpolationFilters != other->svg_inherited_flags._colorInterpolationFilters
219 || svg_inherited_flags._paintOrder != other->svg_inherited_flags._paintOrder)
220 return true;
221
222 if (svg_noninherited_flags.f.bufferedRendering != other->svg_noninherited_flags.f.bufferedRendering)
223 return true;
224
225 if (svg_noninherited_flags.f.maskType != other->svg_noninherited_flags.f.maskType)
226 return true;
227
228 return false;
229 }
230
paintOrderType(unsigned index) const231 EPaintOrderType SVGRenderStyle::paintOrderType(unsigned index) const
232 {
233 ASSERT(index < ((1 << kPaintOrderBitwidth)-1));
234 unsigned pt = (paintOrder() >> (kPaintOrderBitwidth*index)) & ((1u << kPaintOrderBitwidth) - 1);
235 return (EPaintOrderType)pt;
236 }
237
238 }
239