| /* |
| * 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/css/LengthFunctions.h" |
| #include "core/platform/graphics/FloatRect.h" |
| #include "core/platform/graphics/Path.h" |
| #include "core/rendering/style/BasicShapes.h" |
| |
| namespace WebCore { |
| |
| bool BasicShape::canBlend(const BasicShape* other) const |
| { |
| // FIXME: Support animations between different shapes in the future. |
| if (type() != other->type()) |
| return false; |
| |
| // Just polygons with same number of vertices can be animated. |
| if (type() == BasicShape::BasicShapePolygonType |
| && static_cast<const BasicShapePolygon*>(this)->values().size() != static_cast<const BasicShapePolygon*>(other)->values().size()) |
| return false; |
| |
| return true; |
| } |
| |
| void BasicShapeRectangle::path(Path& path, const FloatRect& boundingBox) |
| { |
| ASSERT(path.isEmpty()); |
| path.addRoundedRect( |
| FloatRect( |
| floatValueForLength(m_x, boundingBox.width()) + boundingBox.x(), |
| floatValueForLength(m_y, boundingBox.height()) + boundingBox.y(), |
| floatValueForLength(m_width, boundingBox.width()), |
| floatValueForLength(m_height, boundingBox.height()) |
| ), |
| FloatSize( |
| floatValueForLength(m_cornerRadiusX, boundingBox.width()), |
| floatValueForLength(m_cornerRadiusY, boundingBox.height()) |
| ) |
| ); |
| } |
| |
| PassRefPtr<BasicShape> BasicShapeRectangle::blend(const BasicShape* other, double progress) const |
| { |
| ASSERT(type() == other->type()); |
| |
| const BasicShapeRectangle* o = static_cast<const BasicShapeRectangle*>(other); |
| RefPtr<BasicShapeRectangle> result = BasicShapeRectangle::create(); |
| result->setX(m_x.blend(o->x(), progress)); |
| result->setY(m_y.blend(o->y(), progress)); |
| result->setWidth(m_width.blend(o->width(), progress)); |
| result->setHeight(m_height.blend(o->height(), progress)); |
| result->setCornerRadiusX(m_cornerRadiusX.blend(o->cornerRadiusX(), progress)); |
| result->setCornerRadiusY(m_cornerRadiusY.blend(o->cornerRadiusY(), progress)); |
| return result.release(); |
| } |
| |
| void BasicShapeCircle::path(Path& path, const FloatRect& boundingBox) |
| { |
| ASSERT(path.isEmpty()); |
| float diagonal = sqrtf((boundingBox.width() * boundingBox.width() + boundingBox.height() * boundingBox.height()) / 2); |
| float centerX = floatValueForLength(m_centerX, boundingBox.width()); |
| float centerY = floatValueForLength(m_centerY, boundingBox.height()); |
| float radius = floatValueForLength(m_radius, diagonal); |
| path.addEllipse(FloatRect( |
| centerX - radius + boundingBox.x(), |
| centerY - radius + boundingBox.y(), |
| radius * 2, |
| radius * 2 |
| )); |
| } |
| |
| PassRefPtr<BasicShape> BasicShapeCircle::blend(const BasicShape* other, double progress) const |
| { |
| ASSERT(type() == other->type()); |
| |
| const BasicShapeCircle* o = static_cast<const BasicShapeCircle*>(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(); |
| } |
| |
| void BasicShapeEllipse::path(Path& path, const FloatRect& boundingBox) |
| { |
| ASSERT(path.isEmpty()); |
| float centerX = floatValueForLength(m_centerX, boundingBox.width()); |
| float centerY = floatValueForLength(m_centerY, boundingBox.height()); |
| float radiusX = floatValueForLength(m_radiusX, boundingBox.width()); |
| float radiusY = floatValueForLength(m_radiusY, boundingBox.height()); |
| path.addEllipse(FloatRect( |
| centerX - radiusX + boundingBox.x(), |
| centerY - radiusY + boundingBox.y(), |
| radiusX * 2, |
| radiusY * 2 |
| )); |
| } |
| |
| PassRefPtr<BasicShape> BasicShapeEllipse::blend(const BasicShape* other, double progress) const |
| { |
| ASSERT(type() == other->type()); |
| |
| const BasicShapeEllipse* o = static_cast<const BasicShapeEllipse*>(other); |
| RefPtr<BasicShapeEllipse> result = BasicShapeEllipse::create(); |
| 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(type() == other->type()); |
| |
| const BasicShapePolygon* o = static_cast<const BasicShapePolygon*>(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->windRule()); |
| |
| for (size_t i = 0; i < length; i = i + 2) { |
| result->appendPoint(m_values.at(i).blend(o->values().at(i), progress), |
| m_values.at(i + 1).blend(o->values().at(i + 1), progress)); |
| } |
| |
| return result.release(); |
| } |
| |
| void BasicShapeInsetRectangle::path(Path& path, const FloatRect& boundingBox) |
| { |
| ASSERT(path.isEmpty()); |
| float left = floatValueForLength(m_left, boundingBox.width()); |
| float top = floatValueForLength(m_top, boundingBox.height()); |
| path.addRoundedRect( |
| FloatRect( |
| 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) |
| ), |
| FloatSize( |
| floatValueForLength(m_cornerRadiusX, boundingBox.width()), |
| floatValueForLength(m_cornerRadiusY, boundingBox.height()) |
| ) |
| ); |
| } |
| |
| PassRefPtr<BasicShape> BasicShapeInsetRectangle::blend(const BasicShape* other, double progress) const |
| { |
| ASSERT(type() == other->type()); |
| |
| const BasicShapeInsetRectangle* o = static_cast<const BasicShapeInsetRectangle*>(other); |
| RefPtr<BasicShapeInsetRectangle> result = BasicShapeInsetRectangle::create(); |
| result->setTop(m_top.blend(o->top(), progress)); |
| result->setRight(m_right.blend(o->right(), progress)); |
| result->setBottom(m_bottom.blend(o->bottom(), progress)); |
| result->setLeft(m_left.blend(o->left(), progress)); |
| result->setCornerRadiusX(m_cornerRadiusX.blend(o->cornerRadiusX(), progress)); |
| result->setCornerRadiusY(m_cornerRadiusY.blend(o->cornerRadiusY(), progress)); |
| return result.release(); |
| } |
| } |