| /* |
| * 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 "core/style/BasicShapes.h" |
| |
| #include "core/css/BasicShapeFunctions.h" |
| #include "core/style/ComputedStyle.h" |
| #include "platform/CalculationValue.h" |
| #include "platform/LengthFunctions.h" |
| #include "platform/geometry/FloatRect.h" |
| #include "platform/graphics/Path.h" |
| |
| namespace blink { |
| |
| bool BasicShape::canBlend(const BasicShape* other) const { |
| // FIXME: Support animations between different shapes in the future. |
| if (!other || !isSameType(*other)) |
| return false; |
| |
| // Just polygons with same number of vertices can be animated. |
| if (type() == BasicShape::BasicShapePolygonType && |
| (toBasicShapePolygon(this)->values().size() != |
| toBasicShapePolygon(other)->values().size() || |
| toBasicShapePolygon(this)->getWindRule() != |
| toBasicShapePolygon(other)->getWindRule())) |
| return false; |
| |
| // Circles with keywords for radii or center coordinates cannot be animated. |
| if (type() == BasicShape::BasicShapeCircleType) { |
| if (!toBasicShapeCircle(this)->radius().canBlend( |
| toBasicShapeCircle(other)->radius())) |
| return false; |
| } |
| |
| // Ellipses with keywords for radii or center coordinates cannot be animated. |
| if (type() != BasicShape::BasicShapeEllipseType) |
| return true; |
| |
| return (toBasicShapeEllipse(this)->radiusX().canBlend( |
| toBasicShapeEllipse(other)->radiusX()) && |
| toBasicShapeEllipse(this)->radiusY().canBlend( |
| toBasicShapeEllipse(other)->radiusY())); |
| } |
| |
| bool BasicShapeCircle::operator==(const BasicShape& o) const { |
| if (!isSameType(o)) |
| return false; |
| const BasicShapeCircle& other = toBasicShapeCircle(o); |
| return m_centerX == other.m_centerX && m_centerY == other.m_centerY && |
| m_radius == other.m_radius; |
| } |
| |
| float BasicShapeCircle::floatValueForRadiusInBox(FloatSize boxSize) const { |
| if (m_radius.type() == BasicShapeRadius::Value) |
| return floatValueForLength( |
| m_radius.value(), hypotf(boxSize.width(), boxSize.height()) / sqrtf(2)); |
| |
| FloatPoint center = |
| floatPointForCenterCoordinate(m_centerX, m_centerY, boxSize); |
| |
| float widthDelta = std::abs(boxSize.width() - center.x()); |
| float heightDelta = std::abs(boxSize.height() - center.y()); |
| if (m_radius.type() == BasicShapeRadius::ClosestSide) |
| return std::min(std::min(std::abs(center.x()), widthDelta), |
| std::min(std::abs(center.y()), heightDelta)); |
| |
| // If radius.type() == BasicShapeRadius::FarthestSide. |
| return std::max(std::max(center.x(), widthDelta), |
| std::max(center.y(), heightDelta)); |
| } |
| |
| void BasicShapeCircle::path(Path& path, const FloatRect& boundingBox) { |
| ASSERT(path.isEmpty()); |
| FloatPoint center = |
| floatPointForCenterCoordinate(m_centerX, m_centerY, boundingBox.size()); |
| float radius = floatValueForRadiusInBox(boundingBox.size()); |
| path.addEllipse(FloatRect(center.x() - radius + boundingBox.x(), |
| center.y() - radius + boundingBox.y(), radius * 2, |
| radius * 2)); |
| } |
| |
| PassRefPtr<BasicShape> BasicShapeCircle::blend(const BasicShape* other, |
| double progress) const { |
| ASSERT(type() == other->type()); |
| const BasicShapeCircle* o = toBasicShapeCircle(other); |
| RefPtr<BasicShapeCircle> result = BasicShapeCircle::create(); |
| |
| result->setCenterX(m_centerX.blend(o->centerX(), progress)); |
| result->setCenterY(m_centerY.blend(o->centerY(), progress)); |
| result->setRadius(m_radius.blend(o->radius(), progress)); |
| return result.release(); |
| } |
| |
| bool BasicShapeEllipse::operator==(const BasicShape& o) const { |
| if (!isSameType(o)) |
| return false; |
| const BasicShapeEllipse& other = toBasicShapeEllipse(o); |
| return m_centerX == other.m_centerX && m_centerY == other.m_centerY && |
| m_radiusX == other.m_radiusX && m_radiusY == other.m_radiusY; |
| } |
| |
| float BasicShapeEllipse::floatValueForRadiusInBox( |
| const BasicShapeRadius& radius, |
| float center, |
| float boxWidthOrHeight) const { |
| if (radius.type() == BasicShapeRadius::Value) |
| return floatValueForLength(radius.value(), boxWidthOrHeight); |
| |
| float widthOrHeightDelta = std::abs(boxWidthOrHeight - center); |
| if (radius.type() == BasicShapeRadius::ClosestSide) |
| return std::min(std::abs(center), widthOrHeightDelta); |
| |
| ASSERT(radius.type() == BasicShapeRadius::FarthestSide); |
| return std::max(center, widthOrHeightDelta); |
| } |
| |
| void BasicShapeEllipse::path(Path& path, const FloatRect& boundingBox) { |
| ASSERT(path.isEmpty()); |
| FloatPoint center = |
| floatPointForCenterCoordinate(m_centerX, m_centerY, boundingBox.size()); |
| float radiusX = |
| floatValueForRadiusInBox(m_radiusX, center.x(), boundingBox.width()); |
| float radiusY = |
| floatValueForRadiusInBox(m_radiusY, center.y(), boundingBox.height()); |
| path.addEllipse(FloatRect(center.x() - radiusX + boundingBox.x(), |
| center.y() - radiusY + boundingBox.y(), radiusX * 2, |
| radiusY * 2)); |
| } |
| |
| PassRefPtr<BasicShape> BasicShapeEllipse::blend(const BasicShape* other, |
| double progress) const { |
| ASSERT(type() == other->type()); |
| const BasicShapeEllipse* o = toBasicShapeEllipse(other); |
| RefPtr<BasicShapeEllipse> result = BasicShapeEllipse::create(); |
| |
| if (m_radiusX.type() != BasicShapeRadius::Value || |
| o->radiusX().type() != BasicShapeRadius::Value || |
| m_radiusY.type() != BasicShapeRadius::Value || |
| o->radiusY().type() != BasicShapeRadius::Value) { |
| result->setCenterX(o->centerX()); |
| result->setCenterY(o->centerY()); |
| result->setRadiusX(o->radiusX()); |
| result->setRadiusY(o->radiusY()); |
| return result; |
| } |
| |
| result->setCenterX(m_centerX.blend(o->centerX(), progress)); |
| result->setCenterY(m_centerY.blend(o->centerY(), progress)); |
| result->setRadiusX(m_radiusX.blend(o->radiusX(), progress)); |
| result->setRadiusY(m_radiusY.blend(o->radiusY(), progress)); |
| return result.release(); |
| } |
| |
| void BasicShapePolygon::path(Path& path, const FloatRect& boundingBox) { |
| ASSERT(path.isEmpty()); |
| ASSERT(!(m_values.size() % 2)); |
| size_t length = m_values.size(); |
| |
| if (!length) |
| return; |
| |
| path.moveTo( |
| FloatPoint(floatValueForLength(m_values.at(0), boundingBox.width()) + |
| boundingBox.x(), |
| floatValueForLength(m_values.at(1), boundingBox.height()) + |
| boundingBox.y())); |
| for (size_t i = 2; i < length; i = i + 2) { |
| path.addLineTo(FloatPoint( |
| floatValueForLength(m_values.at(i), boundingBox.width()) + |
| boundingBox.x(), |
| floatValueForLength(m_values.at(i + 1), boundingBox.height()) + |
| boundingBox.y())); |
| } |
| path.closeSubpath(); |
| } |
| |
| PassRefPtr<BasicShape> BasicShapePolygon::blend(const BasicShape* other, |
| double progress) const { |
| ASSERT(other && isSameType(*other)); |
| |
| const BasicShapePolygon* o = toBasicShapePolygon(other); |
| ASSERT(m_values.size() == o->values().size()); |
| ASSERT(!(m_values.size() % 2)); |
| |
| size_t length = m_values.size(); |
| RefPtr<BasicShapePolygon> result = BasicShapePolygon::create(); |
| if (!length) |
| return result.release(); |
| |
| result->setWindRule(o->getWindRule()); |
| |
| for (size_t i = 0; i < length; i = i + 2) { |
| result->appendPoint( |
| m_values.at(i).blend(o->values().at(i), progress, ValueRangeAll), |
| m_values.at(i + 1).blend(o->values().at(i + 1), progress, |
| ValueRangeAll)); |
| } |
| |
| return result.release(); |
| } |
| |
| bool BasicShapePolygon::operator==(const BasicShape& o) const { |
| if (!isSameType(o)) |
| return false; |
| const BasicShapePolygon& other = toBasicShapePolygon(o); |
| return m_windRule == other.m_windRule && m_values == other.m_values; |
| } |
| |
| static FloatSize floatSizeForLengthSize(const LengthSize& lengthSize, |
| const FloatRect& boundingBox) { |
| return FloatSize( |
| floatValueForLength(lengthSize.width(), boundingBox.width()), |
| floatValueForLength(lengthSize.height(), boundingBox.height())); |
| } |
| |
| void BasicShapeInset::path(Path& path, const FloatRect& boundingBox) { |
| ASSERT(path.isEmpty()); |
| float left = floatValueForLength(m_left, boundingBox.width()); |
| float top = floatValueForLength(m_top, boundingBox.height()); |
| FloatRect rect( |
| left + boundingBox.x(), top + boundingBox.y(), |
| std::max<float>(boundingBox.width() - left - |
| floatValueForLength(m_right, boundingBox.width()), |
| 0), |
| std::max<float>(boundingBox.height() - top - |
| floatValueForLength(m_bottom, boundingBox.height()), |
| 0)); |
| auto radii = FloatRoundedRect::Radii( |
| floatSizeForLengthSize(m_topLeftRadius, boundingBox), |
| floatSizeForLengthSize(m_topRightRadius, boundingBox), |
| floatSizeForLengthSize(m_bottomLeftRadius, boundingBox), |
| floatSizeForLengthSize(m_bottomRightRadius, boundingBox)); |
| |
| FloatRoundedRect finalRect(rect, radii); |
| finalRect.constrainRadii(); |
| path.addRoundedRect(finalRect); |
| } |
| |
| static inline LengthSize blendLengthSize(const LengthSize& to, |
| const LengthSize& from, |
| double progress) { |
| return LengthSize( |
| to.width().blend(from.width(), progress, ValueRangeNonNegative), |
| to.height().blend(from.height(), progress, ValueRangeNonNegative)); |
| } |
| |
| PassRefPtr<BasicShape> BasicShapeInset::blend(const BasicShape* other, |
| double progress) const { |
| ASSERT(other && isSameType(*other)); |
| |
| const BasicShapeInset& otherInset = toBasicShapeInset(*other); |
| RefPtr<BasicShapeInset> result = BasicShapeInset::create(); |
| result->setTop(m_top.blend(otherInset.top(), progress, ValueRangeAll)); |
| result->setRight(m_right.blend(otherInset.right(), progress, ValueRangeAll)); |
| result->setBottom( |
| m_bottom.blend(otherInset.bottom(), progress, ValueRangeAll)); |
| result->setLeft(m_left.blend(otherInset.left(), progress, ValueRangeAll)); |
| |
| result->setTopLeftRadius( |
| blendLengthSize(m_topLeftRadius, otherInset.topLeftRadius(), progress)); |
| result->setTopRightRadius( |
| blendLengthSize(m_topRightRadius, otherInset.topRightRadius(), progress)); |
| result->setBottomRightRadius(blendLengthSize( |
| m_bottomRightRadius, otherInset.bottomRightRadius(), progress)); |
| result->setBottomLeftRadius(blendLengthSize( |
| m_bottomLeftRadius, otherInset.bottomLeftRadius(), progress)); |
| |
| return result.release(); |
| } |
| |
| bool BasicShapeInset::operator==(const BasicShape& o) const { |
| if (!isSameType(o)) |
| return false; |
| const BasicShapeInset& other = toBasicShapeInset(o); |
| return m_right == other.m_right && m_top == other.m_top && |
| m_bottom == other.m_bottom && m_left == other.m_left && |
| m_topLeftRadius == other.m_topLeftRadius && |
| m_topRightRadius == other.m_topRightRadius && |
| m_bottomRightRadius == other.m_bottomRightRadius && |
| m_bottomLeftRadius == other.m_bottomLeftRadius; |
| } |
| |
| } // namespace blink |
