/*
* Copyright (C) 2008 Apple Inc. 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 APPLE INC. ``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 APPLE INC. OR
* CONTRIBUTORS 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 "WebKitCSSMatrix.h"
#include "CSSParser.h"
#include "CSSStyleSelector.h"
#include "CSSMutableStyleDeclaration.h"
#include "CSSPropertyNames.h"
#include "CSSValueKeywords.h"
#include "ExceptionCode.h"
#include <wtf/MathExtras.h>
namespace WebCore {
WebKitCSSMatrix::WebKitCSSMatrix(const TransformationMatrix& m)
: m_matrix(m)
{
}
WebKitCSSMatrix::WebKitCSSMatrix(const String& s, ExceptionCode& ec)
{
setMatrixValue(s, ec);
}
WebKitCSSMatrix::~WebKitCSSMatrix()
{
}
void WebKitCSSMatrix::setMatrixValue(const String& string, ExceptionCode& ec)
{
RefPtr<CSSMutableStyleDeclaration> styleDeclaration = CSSMutableStyleDeclaration::create();
if (CSSParser::parseValue(styleDeclaration.get(), CSSPropertyWebkitTransform, string, true, true)) {
// Convert to TransformOperations. This can fail if a property
// requires style (i.e., param uses 'ems' or 'exs')
RefPtr<CSSValue> value = styleDeclaration->getPropertyCSSValue(CSSPropertyWebkitTransform);
// Check for a "none" or empty transform. In these cases we can use the default identity matrix.
if (!value || (value->isPrimitiveValue() && (static_cast<CSSPrimitiveValue*>(value.get()))->getIdent() == CSSValueNone))
return;
TransformOperations operations;
if (!CSSStyleSelector::createTransformOperations(value.get(), 0, 0, operations)) {
ec = SYNTAX_ERR;
return;
}
// Convert transform operations to a TransformationMatrix. This can fail
// if a param has a percentage ('%')
TransformationMatrix t;
for (unsigned i = 0; i < operations.operations().size(); ++i) {
if (operations.operations()[i].get()->apply(t, IntSize(0, 0))) {
ec = SYNTAX_ERR;
return;
}
}
// set the matrix
m_matrix = t;
} else if (!string.isEmpty()) // There is something there but parsing failed
ec = SYNTAX_ERR;
}
// Perform a concatenation of the matrices (this * secondMatrix)
PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::multiply(WebKitCSSMatrix* secondMatrix) const
{
if (!secondMatrix)
return 0;
return WebKitCSSMatrix::create(TransformationMatrix(m_matrix).multiply(secondMatrix->m_matrix));
}
PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::inverse(ExceptionCode& ec) const
{
if (!m_matrix.isInvertible()) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
return WebKitCSSMatrix::create(m_matrix.inverse());
}
PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::translate(double x, double y, double z) const
{
if (isnan(x))
x = 0;
if (isnan(y))
y = 0;
if (isnan(z))
z = 0;
return WebKitCSSMatrix::create(TransformationMatrix(m_matrix).translate3d(x, y, z));
}
PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::scale(double scaleX, double scaleY, double scaleZ) const
{
if (isnan(scaleX))
scaleX = 1;
if (isnan(scaleY))
scaleY = scaleX;
if (isnan(scaleZ))
scaleZ = 1;
return WebKitCSSMatrix::create(TransformationMatrix(m_matrix).scale3d(scaleX, scaleY, scaleZ));
}
PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::rotate(double rotX, double rotY, double rotZ) const
{
if (isnan(rotX))
rotX = 0;
if (isnan(rotY) && isnan(rotZ)) {
rotZ = rotX;
rotX = 0;
rotY = 0;
}
if (isnan(rotY))
rotY = 0;
if (isnan(rotZ))
rotZ = 0;
return WebKitCSSMatrix::create(TransformationMatrix(m_matrix).rotate3d(rotX, rotY, rotZ));
}
PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::rotateAxisAngle(double x, double y, double z, double angle) const
{
if (isnan(x))
x = 0;
if (isnan(y))
y = 0;
if (isnan(z))
z = 0;
if (isnan(angle))
angle = 0;
if (x == 0 && y == 0 && z == 0)
z = 1;
return WebKitCSSMatrix::create(TransformationMatrix(m_matrix).rotate3d(x, y, z, angle));
}
PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::skewX(double angle) const
{
if (isnan(angle))
angle = 0;
return WebKitCSSMatrix::create(TransformationMatrix(m_matrix).skewX(angle));
}
PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::skewY(double angle) const
{
if (isnan(angle))
angle = 0;
return WebKitCSSMatrix::create(TransformationMatrix(m_matrix).skewY(angle));
}
String WebKitCSSMatrix::toString() const
{
// FIXME - Need to ensure valid CSS floating point values (https://bugs.webkit.org/show_bug.cgi?id=20674)
if (m_matrix.isAffine())
return String::format("matrix(%f, %f, %f, %f, %f, %f)",
m_matrix.a(), m_matrix.b(), m_matrix.c(), m_matrix.d(), m_matrix.e(), m_matrix.f());
return String::format("matrix3d(%f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f)",
m_matrix.m11(), m_matrix.m12(), m_matrix.m13(), m_matrix.m14(),
m_matrix.m21(), m_matrix.m22(), m_matrix.m23(), m_matrix.m24(),
m_matrix.m31(), m_matrix.m32(), m_matrix.m33(), m_matrix.m34(),
m_matrix.m41(), m_matrix.m42(), m_matrix.m43(), m_matrix.m44());
}
} // namespace WebCore