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/*
* 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 "BasicShapes.h"
#include "FloatRect.h"
#include "LengthFunctions.h"
#include "Path.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::BASIC_SHAPE_POLYGON
&& 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(m_cornerRadiusX.isUndefined() ? 0 : floatValueForLength(m_cornerRadiusX, boundingBox.width()),
m_cornerRadiusY.isUndefined() ? 0 : 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));
if (!m_cornerRadiusX.isUndefined() && !o->cornerRadiusX().isUndefined())
result->setCornerRadiusX(m_cornerRadiusX.blend(o->cornerRadiusX(), progress));
if (!m_cornerRadiusY.isUndefined() && !o->cornerRadiusY().isUndefined())
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();
}
}
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