| OLD | NEW |
|---|
| (Empty) |
| 1 /* | |
| 2 * Copyright (C) 2012 Adobe Systems Incorporated. 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 * | |
| 8 * 1. Redistributions of source code must retain the above | |
| 9 * copyright notice, this list of conditions and the following | |
| 10 * disclaimer. | |
| 11 * 2. Redistributions in binary form must reproduce the above | |
| 12 * copyright notice, this list of conditions and the following | |
| 13 * disclaimer in the documentation and/or other materials | |
| 14 * provided with the distribution. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
| 19 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
| 20 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, | |
| 21 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
| 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
| 25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
| 27 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 28 */ | |
| 29 | |
| 30 #ifndef Shape_h | |
| 31 #define Shape_h | |
| 32 | |
| 33 #include "core/rendering/style/BasicShapes.h" | |
| 34 #include "core/rendering/style/StyleImage.h" | |
| 35 #include "platform/geometry/LayoutRect.h" | |
| 36 #include "platform/geometry/RoundedRect.h" | |
| 37 #include "platform/graphics/Path.h" | |
| 38 #include "wtf/PassOwnPtr.h" | |
| 39 #include "wtf/Vector.h" | |
| 40 | |
| 41 namespace blink { | |
| 42 | |
| 43 struct LineSegment { | |
| 44 LineSegment() | |
| 45 : logicalLeft(0) | |
| 46 , logicalRight(0) | |
| 47 , isValid(false) | |
| 48 { | |
| 49 } | |
| 50 | |
| 51 LineSegment(float logicalLeft, float logicalRight) | |
| 52 : logicalLeft(logicalLeft) | |
| 53 , logicalRight(logicalRight) | |
| 54 , isValid(true) | |
| 55 { | |
| 56 } | |
| 57 | |
| 58 float logicalLeft; | |
| 59 float logicalRight; | |
| 60 bool isValid; | |
| 61 }; | |
| 62 | |
| 63 // A representation of a BasicShape that enables layout code to determine how to
break a line up into segments | |
| 64 // that will fit within or around a shape. The line is defined by a pair of logi
cal Y coordinates and the | |
| 65 // computed segments are returned as pairs of logical X coordinates. The BasicSh
ape itself is defined in | |
| 66 // physical coordinates. | |
| 67 | |
| 68 class Shape { | |
| 69 public: | |
| 70 struct DisplayPaths { | |
| 71 Path shape; | |
| 72 Path marginShape; | |
| 73 }; | |
| 74 static PassOwnPtr<Shape> createShape(const BasicShape*, const LayoutSize& lo
gicalBoxSize, float margin); | |
| 75 static PassOwnPtr<Shape> createRasterShape(Image*, float threshold, const La
youtRect& imageRect, const LayoutRect& marginRect, float margin); | |
| 76 static PassOwnPtr<Shape> createEmptyRasterShape(float margin); | |
| 77 static PassOwnPtr<Shape> createLayoutBoxShape(const RoundedRect&, float marg
in); | |
| 78 | |
| 79 virtual ~Shape() { } | |
| 80 | |
| 81 virtual LayoutRect shapeMarginLogicalBoundingBox() const = 0; | |
| 82 virtual bool isEmpty() const = 0; | |
| 83 virtual LineSegment getExcludedInterval(LayoutUnit logicalTop, LayoutUnit lo
gicalHeight) const = 0; | |
| 84 | |
| 85 bool lineOverlapsShapeMarginBounds(LayoutUnit lineTop, LayoutUnit lineHeight
) const { return lineOverlapsBoundingBox(lineTop, lineHeight, shapeMarginLogical
BoundingBox()); } | |
| 86 virtual void buildDisplayPaths(DisplayPaths&) const = 0; | |
| 87 | |
| 88 protected: | |
| 89 float shapeMargin() const { return m_margin; } | |
| 90 | |
| 91 private: | |
| 92 bool lineOverlapsBoundingBox(LayoutUnit lineTop, LayoutUnit lineHeight, cons
t LayoutRect& rect) const | |
| 93 { | |
| 94 if (rect.isEmpty()) | |
| 95 return false; | |
| 96 return (lineTop < rect.maxY() && lineTop + lineHeight > rect.y()) || (!l
ineHeight && lineTop == rect.y()); | |
| 97 } | |
| 98 | |
| 99 float m_margin; | |
| 100 }; | |
| 101 | |
| 102 } // namespace blink | |
| 103 | |
| 104 #endif // Shape_h | |
| OLD | NEW |
|---|
Chromium Code Reviews
