1 /*
2 Copyright (C) 2006 Nikolas Zimmermann <wildfox@kde.org>
3
4 This file is part of the KDE project
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 aint 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 "wtf/Platform.h"
23
24 #if ENABLE(SVG)
25 #include "SVGPaintServerGradient.h"
26
27 /*#include "GraphicsContext.h"*/
28 #include "RenderObject.h"
29 #include "RenderStyle.h"
30 #include "SVGGradientElement.h"
31
32 #include <QPainter>
33 #include <QPainterPath>
34 #include <QColor>
35 #include <QGradient>
36
37 namespace WebCore
38 {
39
40 // Helper function used by linear & radial gradient
fillColorArray(QGradient & gradient,const Vector<SVGGradientStop> & stops,float opacity) const41 void SVGPaintServerGradient::fillColorArray(QGradient &gradient, const Vector<SVGGradientStop> &stops,
42 float opacity) const
43 {
44 // qCDebug(KHTML_LOG) << stops.size();
45 for (unsigned i = 0; i < stops.size(); ++i) {
46 float offset = stops[i].first;
47 QColor color = stops[i].second;
48 // qCDebug(KHTML_LOG) << "offset" << offset << "color" << color;
49
50 QColor c(color.red(), color.green(), color.blue());
51 c.setAlpha(int(color.alpha() * opacity));
52
53 gradient.setColorAt(offset, c);
54 }
55 }
56
setup(QPainter * painter,QPainterPath * painterPath,const RenderObject * object,SVGPaintTargetType type,bool isPaintingText) const57 bool SVGPaintServerGradient::setup(QPainter *painter, QPainterPath *painterPath, const RenderObject *object,
58 SVGPaintTargetType type, bool isPaintingText) const
59 {
60 Q_UNUSED(isPaintingText);
61 // qCDebug(KHTML_LOG) << "!!!!!!!";
62 m_ownerElement->buildGradient();
63
64 /*QPainter* painter(context ? context->platformContext() : 0);
65 Q_ASSERT(painter);*/
66
67 /*QPainterPath* path(context ? context->currentPath() : 0);
68 Q_ASSERT(path);*/
69
70 RenderStyle *renderStyle = object->style();
71
72 QGradient gradient = setupGradient(painter, painterPath, object);
73
74 painter->setPen(Qt::NoPen);
75 painter->setBrush(Qt::NoBrush);
76
77 if (spreadMethod() == SPREADMETHOD_REPEAT) {
78 gradient.setSpread(QGradient::RepeatSpread);
79 } else if (spreadMethod() == SPREADMETHOD_REFLECT) {
80 gradient.setSpread(QGradient::ReflectSpread);
81 } else {
82 gradient.setSpread(QGradient::PadSpread);
83 }
84 double opacity = 1.0;
85
86 // qCDebug(KHTML_LOG) << "type: " << type << (type & ApplyToFillTargetType);
87 if ((type & ApplyToFillTargetType) && renderStyle->svgStyle()->hasFill()) {
88 fillColorArray(gradient, gradientStops(), opacity);
89
90 QBrush brush(gradient);
91 brush.setMatrix(gradientTransform());
92
93 painter->setBrush(brush);
94 /* FIXME khtml context->setFillRule(renderStyle->svgStyle()->fillRule());*/
95 }
96
97 if ((type & ApplyToStrokeTargetType) && renderStyle->svgStyle()->hasStroke()) {
98 fillColorArray(gradient, gradientStops(), opacity);
99
100 QPen pen;
101 QBrush brush(gradient);
102 brush.setMatrix(gradientTransform());
103
104 setPenProperties(object, renderStyle, pen);
105 pen.setBrush(brush);
106
107 painter->setPen(pen);
108 }
109
110 return true;
111 }
112
113 } // namespace WebCore
114
115 #endif
116
117