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 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 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 97 FindIndicator::~FindIndicator() 98 { 99 } 100 101 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 } 109 110 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 } 116 117 static Color lightBorderColor() 118 { 119 return Color(lightBorderRed, lightBorderGreen, lightBorderBlue, lightBorderAlpha); 120 } 121 122 static Color shadowColor() 123 { 124 return Color(shadowRed, shadowGreen, shadowBlue, shadowAlpha); 125 } 126 127 static Color gradientLightColor() 128 { 129 return Color(gradientLightRed, gradientLightGreen, gradientLightBlue, gradientLightAlpha); 130 } 131 132 static Color gradientDarkColor() 133 { 134 return Color(gradientDarkRed, gradientDarkGreen, gradientDarkBlue, gradientDarkAlpha); 135 } 136 137 static Path pathWithRoundedRect(const FloatRect& pathRect, float radius) 138 { 139 Path path; 140 path.addRoundedRect(pathRect, FloatSize(radius, radius)); 141 142 return path; 143 } 144 145 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