1 /*
2 * Copyright (C) 2010 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "FindIndicator.h"
28
29 #include "ShareableBitmap.h"
30 #include <WebCore/Gradient.h>
31 #include <WebCore/GraphicsContext.h>
32 #include <WebCore/IntRect.h>
33 #include <WebCore/Path.h>
34
35 using namespace WebCore;
36
37 static const float cornerRadius = 3.0;
38
39 static const float shadowOffsetX = 0.0;
40 static const float shadowOffsetY = 1.0;
41 static const float shadowBlurRadius = 3.0;
42
43 static const int shadowRed = 0;
44 static const int shadowGreen = 0;
45 static const int shadowBlue = 0;
46 static const int shadowAlpha = 204;
47
48 static const float lightBorderThickness = 1.0;
49 static const float horizontalPaddingInsideLightBorder = 3.0;
50 static const float verticalPaddingInsideLightBorder = 1.0;
51
52 static const float horizontalBorderInsideShadow = lightBorderThickness + horizontalPaddingInsideLightBorder;
53 static const float verticalBorderInsideShadow = lightBorderThickness + verticalPaddingInsideLightBorder;
54
55 static const float leftBorderThickness = horizontalBorderInsideShadow + shadowOffsetX + shadowBlurRadius / 2.0;
56 static const float topBorderThickness = verticalBorderInsideShadow - shadowOffsetY + shadowBlurRadius / 2.0;
57 static const float rightBorderThickness = horizontalBorderInsideShadow - shadowOffsetX + shadowBlurRadius / 2.0;
58 static const float bottomBorderThickness = verticalBorderInsideShadow + shadowOffsetY + shadowBlurRadius / 2.0;
59
60 static const float horizontalOutsetToCenterOfLightBorder = horizontalBorderInsideShadow - lightBorderThickness / 2.0;
61 static const float verticalOutsetToCenterOfLightBorder = verticalBorderInsideShadow - lightBorderThickness / 2.0;
62
63 static const int lightBorderRed = 245;
64 static const int lightBorderGreen = 230;
65 static const int lightBorderBlue = 0;
66 static const int lightBorderAlpha = 255;
67
68 static const int gradientDarkRed = 237;
69 static const int gradientDarkGreen = 204;
70 static const int gradientDarkBlue = 0;
71 static const int gradientDarkAlpha = 255;
72
73 static const int gradientLightRed = 242;
74 static const int gradientLightGreen = 239;
75 static const int gradientLightBlue = 0;
76 static const int gradientLightAlpha = 255;
77
78 namespace WebKit {
79
create(const FloatRect & selectionRectInWindowCoordinates,const Vector<FloatRect> & textRectsInSelectionRectCoordinates,const ShareableBitmap::Handle & contentImageHandle)80 PassRefPtr<FindIndicator> FindIndicator::create(const FloatRect& selectionRectInWindowCoordinates, const Vector<FloatRect>& textRectsInSelectionRectCoordinates, const ShareableBitmap::Handle& contentImageHandle)
81 {
82 RefPtr<ShareableBitmap> contentImage = ShareableBitmap::create(contentImageHandle);
83 if (!contentImage)
84 return 0;
85 ASSERT(contentImage->size() == enclosingIntRect(selectionRectInWindowCoordinates).size());
86
87 return adoptRef(new FindIndicator(selectionRectInWindowCoordinates, textRectsInSelectionRectCoordinates, contentImage.release()));
88 }
89
FindIndicator(const WebCore::FloatRect & selectionRectInWindowCoordinates,const Vector<WebCore::FloatRect> & textRectsInSelectionRectCoordinates,PassRefPtr<ShareableBitmap> contentImage)90 FindIndicator::FindIndicator(const WebCore::FloatRect& selectionRectInWindowCoordinates, const Vector<WebCore::FloatRect>& textRectsInSelectionRectCoordinates, PassRefPtr<ShareableBitmap> contentImage)
91 : m_selectionRectInWindowCoordinates(selectionRectInWindowCoordinates)
92 , m_textRectsInSelectionRectCoordinates(textRectsInSelectionRectCoordinates)
93 , m_contentImage(contentImage)
94 {
95 }
96
~FindIndicator()97 FindIndicator::~FindIndicator()
98 {
99 }
100
inflateRect(const FloatRect & rect,float inflateX,float inflateY)101 static FloatRect inflateRect(const FloatRect& rect, float inflateX, float inflateY)
102 {
103 FloatRect inflatedRect = rect;
104 inflatedRect.inflateX(inflateX);
105 inflatedRect.inflateY(inflateY);
106
107 return inflatedRect;
108 }
109
frameRect() const110 FloatRect FindIndicator::frameRect() const
111 {
112 return FloatRect(m_selectionRectInWindowCoordinates.x() - leftBorderThickness, m_selectionRectInWindowCoordinates.y() - topBorderThickness,
113 m_selectionRectInWindowCoordinates.width() + rightBorderThickness + leftBorderThickness,
114 m_selectionRectInWindowCoordinates.height() + topBorderThickness + bottomBorderThickness);
115 }
116
lightBorderColor()117 static Color lightBorderColor()
118 {
119 return Color(lightBorderRed, lightBorderGreen, lightBorderBlue, lightBorderAlpha);
120 }
121
shadowColor()122 static Color shadowColor()
123 {
124 return Color(shadowRed, shadowGreen, shadowBlue, shadowAlpha);
125 }
126
gradientLightColor()127 static Color gradientLightColor()
128 {
129 return Color(gradientLightRed, gradientLightGreen, gradientLightBlue, gradientLightAlpha);
130 }
131
gradientDarkColor()132 static Color gradientDarkColor()
133 {
134 return Color(gradientDarkRed, gradientDarkGreen, gradientDarkBlue, gradientDarkAlpha);
135 }
136
pathWithRoundedRect(const FloatRect & pathRect,float radius)137 static Path pathWithRoundedRect(const FloatRect& pathRect, float radius)
138 {
139 Path path;
140 path.addRoundedRect(pathRect, FloatSize(radius, radius));
141
142 return path;
143 }
144
draw(GraphicsContext & graphicsContext,const IntRect & dirtyRect)145 void FindIndicator::draw(GraphicsContext& graphicsContext, const IntRect& dirtyRect)
146 {
147 for (size_t i = 0; i < m_textRectsInSelectionRectCoordinates.size(); ++i) {
148 FloatRect textRect = m_textRectsInSelectionRectCoordinates[i];
149 textRect.move(leftBorderThickness, topBorderThickness);
150
151 graphicsContext.save();
152 FloatRect outerPathRect = inflateRect(textRect, horizontalOutsetToCenterOfLightBorder, verticalOutsetToCenterOfLightBorder);
153 graphicsContext.setShadow(FloatSize(shadowOffsetX, shadowOffsetY), shadowBlurRadius, shadowColor(), ColorSpaceSRGB);
154 graphicsContext.setFillColor(lightBorderColor(), ColorSpaceDeviceRGB);
155 graphicsContext.fillPath(pathWithRoundedRect(outerPathRect, cornerRadius));
156 graphicsContext.restore();
157
158 graphicsContext.save();
159 FloatRect innerPathRect = inflateRect(textRect, horizontalPaddingInsideLightBorder, verticalPaddingInsideLightBorder);
160 graphicsContext.clip(pathWithRoundedRect(innerPathRect, cornerRadius));
161 RefPtr<Gradient> gradient = Gradient::create(FloatPoint(innerPathRect.x(), innerPathRect.y()), FloatPoint(innerPathRect.x(), innerPathRect.maxY()));
162 gradient->addColorStop(0, gradientLightColor());
163 gradient->addColorStop(1, gradientDarkColor());
164 graphicsContext.setFillGradient(gradient);
165 graphicsContext.fillRect(outerPathRect);
166 graphicsContext.restore();
167
168 graphicsContext.save();
169 graphicsContext.translate(FloatSize(roundf(leftBorderThickness), roundf(topBorderThickness)));
170 m_contentImage->paint(graphicsContext, IntPoint(0, 0), m_contentImage->bounds());
171 graphicsContext.restore();
172 }
173 }
174
175 } // namespace WebKit
176