| /* |
| * Copyright (C) 2013 Adobe Systems Incorporated. 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 THE COPYRIGHT HOLDERS AND 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 THE |
| * COPYRIGHT HOLDER OR 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 "core/rendering/shapes/BoxShape.h" |
| |
| #include "wtf/MathExtras.h" |
| |
| namespace blink { |
| |
| LayoutRect BoxShape::shapeMarginLogicalBoundingBox() const |
| { |
| FloatRect marginBounds(m_bounds.rect()); |
| if (shapeMargin() > 0) |
| marginBounds.inflate(shapeMargin()); |
| return static_cast<LayoutRect>(marginBounds); |
| } |
| |
| FloatRoundedRect BoxShape::shapeMarginBounds() const |
| { |
| FloatRoundedRect marginBounds(m_bounds); |
| if (shapeMargin() > 0) { |
| marginBounds.inflate(shapeMargin()); |
| marginBounds.expandRadii(shapeMargin()); |
| } |
| return marginBounds; |
| } |
| |
| LineSegment BoxShape::getExcludedInterval(LayoutUnit logicalTop, LayoutUnit logicalHeight) const |
| { |
| const FloatRoundedRect& marginBounds = shapeMarginBounds(); |
| if (marginBounds.isEmpty() || !lineOverlapsShapeMarginBounds(logicalTop, logicalHeight)) |
| return LineSegment(); |
| |
| float y1 = logicalTop.toFloat(); |
| float y2 = (logicalTop + logicalHeight).toFloat(); |
| const FloatRect& rect = marginBounds.rect(); |
| |
| if (!marginBounds.isRounded()) |
| return LineSegment(marginBounds.rect().x(), marginBounds.rect().maxX()); |
| |
| float topCornerMaxY = std::max<float>(marginBounds.topLeftCorner().maxY(), marginBounds.topRightCorner().maxY()); |
| float bottomCornerMinY = std::min<float>(marginBounds.bottomLeftCorner().y(), marginBounds.bottomRightCorner().y()); |
| |
| if (topCornerMaxY <= bottomCornerMinY && y1 <= topCornerMaxY && y2 >= bottomCornerMinY) |
| return LineSegment(rect.x(), rect.maxX()); |
| |
| float x1 = rect.maxX(); |
| float x2 = rect.x(); |
| float minXIntercept; |
| float maxXIntercept; |
| |
| if (y1 <= marginBounds.topLeftCorner().maxY() && y2 >= marginBounds.bottomLeftCorner().y()) |
| x1 = rect.x(); |
| |
| if (y1 <= marginBounds.topRightCorner().maxY() && y2 >= marginBounds.bottomRightCorner().y()) |
| x2 = rect.maxX(); |
| |
| if (marginBounds.xInterceptsAtY(y1, minXIntercept, maxXIntercept)) { |
| x1 = std::min<float>(x1, minXIntercept); |
| x2 = std::max<float>(x2, maxXIntercept); |
| } |
| |
| if (marginBounds.xInterceptsAtY(y2, minXIntercept, maxXIntercept)) { |
| x1 = std::min<float>(x1, minXIntercept); |
| x2 = std::max<float>(x2, maxXIntercept); |
| } |
| |
| ASSERT(x2 >= x1); |
| return LineSegment(x1, x2); |
| } |
| |
| void BoxShape::buildDisplayPaths(DisplayPaths& paths) const |
| { |
| paths.shape.addRoundedRect(m_bounds.rect(), m_bounds.radii().topLeft(), m_bounds.radii().topRight(), m_bounds.radii().bottomLeft(), m_bounds.radii().bottomRight()); |
| if (shapeMargin()) |
| paths.marginShape.addRoundedRect(shapeMarginBounds().rect(), shapeMarginBounds().radii().topLeft(), shapeMarginBounds().radii().topRight(), shapeMarginBounds().radii().bottomLeft(), shapeMarginBounds().radii().bottomRight()); |
| } |
| |
| } // namespace blink |