KHtml

SVGPaintServerGradientQt.cpp
1 /*
2  Copyright (C) 2006 Nikolas Zimmermann <[email protected]>
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
41 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 
57 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) {
79  } else if (spreadMethod() == SPREADMETHOD_REFLECT) {
81  } else {
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 
void setColorAt(qreal position, const QColor &color)
void setAlpha(int alpha)
void setBrush(const QBrush &brush)
int red() const const
void setPen(const QColor &color)
void setBrush(const QBrush &brush)
int alpha() const const
int green() const const
int blue() const const
void setSpread(QGradient::Spread method)
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