| /* |
| * Copyright (C) 2012 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 HOLDER “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 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/ShapeOutsideInfo.h" |
| |
| #include "core/rendering/FloatingObjects.h" |
| #include "core/rendering/RenderBlockFlow.h" |
| #include "core/rendering/RenderBox.h" |
| |
| namespace WebCore { |
| bool ShapeOutsideInfo::isEnabledFor(const RenderBox& box) |
| { |
| ShapeValue* shapeValue = box.style()->shapeOutside(); |
| if (!box.isFloating() || !shapeValue) |
| return false; |
| |
| switch (shapeValue->type()) { |
| case ShapeValue::Shape: |
| return shapeValue->shape(); |
| case ShapeValue::Image: |
| return shapeValue->isImageValid() && checkShapeImageOrigin(box.document(), *(shapeValue->image()->cachedImage())); |
| case ShapeValue::Box: |
| return true; |
| case ShapeValue::Outside: |
| return false; |
| } |
| |
| return false; |
| } |
| |
| void ShapeOutsideInfo::updateDeltasForContainingBlockLine(const RenderBlockFlow& containingBlock, const FloatingObject& floatingObject, LayoutUnit lineTop, LayoutUnit lineHeight) |
| { |
| LayoutUnit borderBoxTop = containingBlock.logicalTopForFloat(&floatingObject) + containingBlock.marginBeforeForChild(&m_renderer); |
| LayoutUnit borderBoxLineTop = lineTop - borderBoxTop; |
| |
| if (isShapeDirty() || m_borderBoxLineTop != borderBoxLineTop || m_lineHeight != lineHeight) { |
| m_borderBoxLineTop = borderBoxLineTop; |
| m_referenceBoxLineTop = borderBoxLineTop - logicalTopOffset(); |
| m_lineHeight = lineHeight; |
| |
| LayoutUnit floatMarginBoxWidth = containingBlock.logicalWidthForFloat(&floatingObject); |
| |
| if (lineOverlapsShapeBounds()) { |
| SegmentList segments = computeSegmentsForLine(borderBoxLineTop, lineHeight); |
| if (segments.size()) { |
| LayoutUnit logicalLeftMargin = containingBlock.style()->isLeftToRightDirection() ? containingBlock.marginStartForChild(&m_renderer) : containingBlock.marginEndForChild(&m_renderer); |
| LayoutUnit rawLeftMarginBoxDelta = segments.first().logicalLeft + logicalLeftMargin; |
| m_leftMarginBoxDelta = clampToLayoutUnit(rawLeftMarginBoxDelta, LayoutUnit(), floatMarginBoxWidth); |
| |
| LayoutUnit logicalRightMargin = containingBlock.style()->isLeftToRightDirection() ? containingBlock.marginEndForChild(&m_renderer) : containingBlock.marginStartForChild(&m_renderer); |
| LayoutUnit rawRightMarginBoxDelta = segments.last().logicalRight - containingBlock.logicalWidthForChild(&m_renderer) - logicalRightMargin; |
| m_rightMarginBoxDelta = clampToLayoutUnit(rawRightMarginBoxDelta, -floatMarginBoxWidth, LayoutUnit()); |
| m_lineOverlapsShape = true; |
| return; |
| } |
| } |
| |
| // Lines that do not overlap the shape should act as if the float |
| // wasn't there for layout purposes. So we set the deltas to remove the |
| // entire width of the float. |
| m_leftMarginBoxDelta = floatMarginBoxWidth; |
| m_rightMarginBoxDelta = -floatMarginBoxWidth; |
| m_lineOverlapsShape = false; |
| } |
| } |
| |
| ShapeValue* ShapeOutsideInfo::shapeValue() const |
| { |
| return m_renderer.style()->shapeOutside(); |
| } |
| |
| const RenderStyle* ShapeOutsideInfo::styleForWritingMode() const |
| { |
| ASSERT(m_renderer.containingBlock()); |
| return m_renderer.containingBlock()->style(); |
| } |
| |
| } |