Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 212 insertions, 0 deletions

diff --git a/Source/WebKit2/UIProcess/FindIndicator.cpp b/Source/WebKit2/UIProcess/FindIndicator.cpp
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index 000000000..e3dfe6f4d
--- /dev/null
+++ b/Source/WebKit2/UIProcess/FindIndicator.cpp
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+/*
+ * Copyright (C) 2010 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "FindIndicator.h"
+
+#include "ShareableBitmap.h"
+#include <WebCore/Gradient.h>
+#include <WebCore/GraphicsContext.h>
+#include <WebCore/IntRect.h>
+#include <WebCore/Path.h>
+
+using namespace WebCore;
+
+static const float cornerRadius = 3.0;
+
+static const float shadowOffsetX = 0.0;
+static const float shadowOffsetY = 1.0;
+static const float shadowBlurRadius = 3.0;
+
+static const int shadowRed = 0;
+static const int shadowGreen = 0;
+static const int shadowBlue = 0;
+static const int shadowAlpha = 204;
+
+static const float lightBorderThickness = 1.0;
+static const float horizontalPaddingInsideLightBorder = 3.0;
+static const float verticalPaddingInsideLightBorder = 1.0;
+
+static const float horizontalBorderInsideShadow = lightBorderThickness + horizontalPaddingInsideLightBorder;
+static const float verticalBorderInsideShadow = lightBorderThickness + verticalPaddingInsideLightBorder;
+
+static const float leftBorderThickness = horizontalBorderInsideShadow + shadowOffsetX + shadowBlurRadius / 2.0;
+static const float topBorderThickness = verticalBorderInsideShadow - shadowOffsetY + shadowBlurRadius / 2.0;
+static const float rightBorderThickness = horizontalBorderInsideShadow - shadowOffsetX + shadowBlurRadius / 2.0;
+static const float bottomBorderThickness = verticalBorderInsideShadow + shadowOffsetY + shadowBlurRadius / 2.0;
+
+static const float horizontalOutsetToCenterOfLightBorder = horizontalBorderInsideShadow - lightBorderThickness / 2.0;
+static const float verticalOutsetToCenterOfLightBorder = verticalBorderInsideShadow - lightBorderThickness / 2.0;
+
+static const int lightBorderRed = 245;
+static const int lightBorderGreen = 230;
+static const int lightBorderBlue = 0;
+static const int lightBorderAlpha = 255;
+
+static const int gradientDarkRed = 237;
+static const int gradientDarkGreen = 204;
+static const int gradientDarkBlue = 0;
+static const int gradientDarkAlpha = 255;
+
+static const int gradientLightRed = 242;
+static const int gradientLightGreen = 239;
+static const int gradientLightBlue = 0;
+static const int gradientLightAlpha = 255;
+
+namespace WebKit {
+
+PassRefPtr<FindIndicator> FindIndicator::create(const FloatRect& selectionRectInWindowCoordinates, const Vector<FloatRect>& textRectsInSelectionRectCoordinates, float contentImageScaleFactor, const ShareableBitmap::Handle& contentImageHandle)
+{
+    RefPtr<ShareableBitmap> contentImage = ShareableBitmap::create(contentImageHandle);
+    if (!contentImage)
+        return 0;
+    ASSERT(contentImageScaleFactor != 1 || contentImage->size() == enclosingIntRect(selectionRectInWindowCoordinates).size());
+
+    return adoptRef(new FindIndicator(selectionRectInWindowCoordinates, textRectsInSelectionRectCoordinates, contentImageScaleFactor, contentImage.release()));
+}
+
+static bool findIndicatorsForTextRectsOverlap(const Vector<FloatRect>& textRects)
+{
+    size_t count = textRects.size();
+    if (count <= 1)
+        return false;
+
+    Vector<FloatRect> indicatorRects;
+    indicatorRects.reserveInitialCapacity(count);
+
+    for (size_t i = 0; i < count; ++i) {
+        FloatRect indicatorRect = textRects[i];
+        indicatorRect.move(-leftBorderThickness, -topBorderThickness);
+        indicatorRect.expand(leftBorderThickness + rightBorderThickness, topBorderThickness + bottomBorderThickness);
+
+        for (size_t j = indicatorRects.size(); j; ) {
+            --j;
+            if (indicatorRect.intersects(indicatorRects[j]))
+                return true;
+        }
+
+        indicatorRects.uncheckedAppend(indicatorRect);
+    }
+
+    return false;
+}
+
+FindIndicator::FindIndicator(const WebCore::FloatRect& selectionRectInWindowCoordinates, const Vector<WebCore::FloatRect>& textRectsInSelectionRectCoordinates, float contentImageScaleFactor, PassRefPtr<ShareableBitmap> contentImage)
+    : m_selectionRectInWindowCoordinates(selectionRectInWindowCoordinates)
+    , m_textRectsInSelectionRectCoordinates(textRectsInSelectionRectCoordinates)
+    , m_contentImageScaleFactor(contentImageScaleFactor)
+    , m_contentImage(contentImage)
+{
+    if (findIndicatorsForTextRectsOverlap(m_textRectsInSelectionRectCoordinates)) {
+        m_textRectsInSelectionRectCoordinates[0] = unionRect(m_textRectsInSelectionRectCoordinates);
+        m_textRectsInSelectionRectCoordinates.shrink(1);
+    }
+}
+
+FindIndicator::~FindIndicator()
+{
+}
+
+static FloatRect inflateRect(const FloatRect& rect, float inflateX, float inflateY)
+{
+    FloatRect inflatedRect = rect;
+    inflatedRect.inflateX(inflateX);
+    inflatedRect.inflateY(inflateY);
+    
+    return inflatedRect;
+}
+
+FloatRect FindIndicator::frameRect() const
+{
+    return FloatRect(m_selectionRectInWindowCoordinates.x() - leftBorderThickness, m_selectionRectInWindowCoordinates.y() - topBorderThickness,
+                     m_selectionRectInWindowCoordinates.width() + rightBorderThickness + leftBorderThickness,
+                     m_selectionRectInWindowCoordinates.height() + topBorderThickness + bottomBorderThickness);
+}
+
+static Color lightBorderColor()
+{
+    return Color(lightBorderRed, lightBorderGreen, lightBorderBlue, lightBorderAlpha);
+}
+
+static Color shadowColor()
+{
+    return Color(shadowRed, shadowGreen, shadowBlue, shadowAlpha);
+}
+
+static Color gradientLightColor()
+{
+    return Color(gradientLightRed, gradientLightGreen, gradientLightBlue, gradientLightAlpha);
+}
+
+static Color gradientDarkColor()
+{
+    return Color(gradientDarkRed, gradientDarkGreen, gradientDarkBlue, gradientDarkAlpha);
+}
+
+static Path pathWithRoundedRect(const FloatRect& pathRect, float radius)
+{
+    Path path;
+    path.addRoundedRect(pathRect, FloatSize(radius, radius));
+
+    return path;
+}
+    
+void FindIndicator::draw(GraphicsContext& graphicsContext, const IntRect& dirtyRect)
+{
+    for (size_t i = 0; i < m_textRectsInSelectionRectCoordinates.size(); ++i) {
+        FloatRect textRect = m_textRectsInSelectionRectCoordinates[i];
+        textRect.move(leftBorderThickness, topBorderThickness);
+
+        FloatRect outerPathRect = inflateRect(textRect, horizontalOutsetToCenterOfLightBorder, verticalOutsetToCenterOfLightBorder);
+        FloatRect innerPathRect = inflateRect(textRect, horizontalPaddingInsideLightBorder, verticalPaddingInsideLightBorder);
+
+        {
+            GraphicsContextStateSaver stateSaver(graphicsContext);
+            graphicsContext.setShadow(FloatSize(shadowOffsetX, shadowOffsetY), shadowBlurRadius, shadowColor(), ColorSpaceSRGB);
+            graphicsContext.setFillColor(lightBorderColor(), ColorSpaceDeviceRGB);
+            graphicsContext.fillPath(pathWithRoundedRect(outerPathRect, cornerRadius));
+        }
+
+        {
+            GraphicsContextStateSaver stateSaver(graphicsContext);
+            graphicsContext.clip(pathWithRoundedRect(innerPathRect, cornerRadius));
+            RefPtr<Gradient> gradient = Gradient::create(FloatPoint(innerPathRect.x(), innerPathRect.y()), FloatPoint(innerPathRect.x(), innerPathRect.maxY()));
+            gradient->addColorStop(0, gradientLightColor());
+            gradient->addColorStop(1, gradientDarkColor());
+            graphicsContext.setFillGradient(gradient);
+            graphicsContext.fillRect(outerPathRect);
+        }
+
+        {
+            GraphicsContextStateSaver stateSaver(graphicsContext);
+            graphicsContext.translate(FloatSize(roundf(leftBorderThickness), roundf(topBorderThickness)));
+
+            IntRect contentImageRect = enclosingIntRect(m_textRectsInSelectionRectCoordinates[i]);
+            m_contentImage->paint(graphicsContext, m_contentImageScaleFactor, contentImageRect.location(), contentImageRect);
+        }
+    }
+}
+
+} // namespace WebKit