longsonr
42091a12bf
- Convert from string->uint16 directly rather than via atoms - Use Matrix::ExactlyEquals - Store transform origin as a gfx::Point Differential Revision: https://phabricator.services.mozilla.com/D305597
252 lines
7.4 KiB
C++
252 lines
7.4 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "SVGTransform.h"
|
|
|
|
#include "nsContentUtils.h" // for NS_ENSURE_FINITE
|
|
#include "nsError.h"
|
|
#include "nsMathUtils.h"
|
|
#include "nsTextFormatter.h"
|
|
|
|
namespace mozilla {
|
|
|
|
using namespace dom::SVGTransform_Binding;
|
|
|
|
void SVGTransform::GetValueAsString(nsAString& aValue) const {
|
|
switch (mType) {
|
|
case SVG_TRANSFORM_TRANSLATE:
|
|
// The spec say that if Y is not provided, it is assumed to be zero.
|
|
if (mMatrix._32 != 0)
|
|
nsTextFormatter::ssprintf(aValue, u"translate(%g, %g)", mMatrix._31,
|
|
mMatrix._32);
|
|
else
|
|
nsTextFormatter::ssprintf(aValue, u"translate(%g)", mMatrix._31);
|
|
break;
|
|
case SVG_TRANSFORM_ROTATE:
|
|
if (mOrigin != gfx::Point())
|
|
nsTextFormatter::ssprintf(aValue, u"rotate(%g, %g, %g)", mAngle,
|
|
mOrigin.x, mOrigin.y);
|
|
else
|
|
nsTextFormatter::ssprintf(aValue, u"rotate(%g)", mAngle);
|
|
break;
|
|
case SVG_TRANSFORM_SCALE:
|
|
if (mMatrix._11 != mMatrix._22)
|
|
nsTextFormatter::ssprintf(aValue, u"scale(%g, %g)", mMatrix._11,
|
|
mMatrix._22);
|
|
else
|
|
nsTextFormatter::ssprintf(aValue, u"scale(%g)", mMatrix._11);
|
|
break;
|
|
case SVG_TRANSFORM_SKEWX:
|
|
nsTextFormatter::ssprintf(aValue, u"skewX(%g)", mAngle);
|
|
break;
|
|
case SVG_TRANSFORM_SKEWY:
|
|
nsTextFormatter::ssprintf(aValue, u"skewY(%g)", mAngle);
|
|
break;
|
|
case SVG_TRANSFORM_MATRIX:
|
|
nsTextFormatter::ssprintf(aValue, u"matrix(%g, %g, %g, %g, %g, %g)",
|
|
mMatrix._11, mMatrix._12, mMatrix._21,
|
|
mMatrix._22, mMatrix._31, mMatrix._32);
|
|
break;
|
|
default:
|
|
aValue.Truncate();
|
|
NS_ERROR("unknown transformation type");
|
|
break;
|
|
}
|
|
}
|
|
|
|
void SVGTransform::SetMatrix(const gfxMatrix& aMatrix) {
|
|
mType = SVG_TRANSFORM_MATRIX;
|
|
mMatrix = aMatrix;
|
|
// We set the other members here too, since operator== requires it and
|
|
// the DOM requires it for mAngle.
|
|
mAngle = 0.f;
|
|
mOrigin = gfx::Point();
|
|
}
|
|
|
|
void SVGTransform::SetTranslate(float aTx, float aTy) {
|
|
mType = SVG_TRANSFORM_TRANSLATE;
|
|
mMatrix = gfxMatrix::Translation(aTx, aTy);
|
|
mAngle = 0.f;
|
|
mOrigin = gfx::Point();
|
|
}
|
|
|
|
void SVGTransform::SetScale(float aSx, float aSy) {
|
|
mType = SVG_TRANSFORM_SCALE;
|
|
mMatrix = gfxMatrix::Scaling(aSx, aSy);
|
|
mAngle = 0.f;
|
|
mOrigin = gfx::Point();
|
|
}
|
|
|
|
void SVGTransform::SetRotate(float aAngle, float aCx, float aCy) {
|
|
mType = SVG_TRANSFORM_ROTATE;
|
|
mMatrix = gfxMatrix::Translation(aCx, aCy)
|
|
.PreRotate(aAngle * kRadPerDegree)
|
|
.PreTranslate(-aCx, -aCy);
|
|
mAngle = aAngle;
|
|
mOrigin.MoveTo(aCx, aCy);
|
|
}
|
|
|
|
nsresult SVGTransform::SetSkewX(float aAngle) {
|
|
double ta = tan(aAngle * kRadPerDegree);
|
|
// No one actually cares about the exact error return type here.
|
|
NS_ENSURE_FINITE(ta, NS_ERROR_INVALID_ARG);
|
|
|
|
mType = SVG_TRANSFORM_SKEWX;
|
|
mMatrix = gfxMatrix();
|
|
mMatrix._21 = ta;
|
|
mAngle = aAngle;
|
|
mOrigin = gfx::Point();
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult SVGTransform::SetSkewY(float aAngle) {
|
|
double ta = tan(aAngle * kRadPerDegree);
|
|
// No one actually cares about the exact error return type here.
|
|
NS_ENSURE_FINITE(ta, NS_ERROR_INVALID_ARG);
|
|
|
|
mType = SVG_TRANSFORM_SKEWY;
|
|
mMatrix = gfxMatrix();
|
|
mMatrix._12 = ta;
|
|
mAngle = aAngle;
|
|
mOrigin = gfx::Point();
|
|
return NS_OK;
|
|
}
|
|
|
|
uint16_t SVGTransform::GetTransformTypeForString(
|
|
const nsAString& aTransformType) {
|
|
if (aTransformType.EqualsLiteral("translate")) {
|
|
return SVG_TRANSFORM_TRANSLATE;
|
|
}
|
|
if (aTransformType.EqualsLiteral("scale")) {
|
|
return SVG_TRANSFORM_SCALE;
|
|
}
|
|
if (aTransformType.EqualsLiteral("rotate")) {
|
|
return SVG_TRANSFORM_ROTATE;
|
|
}
|
|
if (aTransformType.EqualsLiteral("skewX")) {
|
|
return SVG_TRANSFORM_SKEWX;
|
|
}
|
|
if (aTransformType.EqualsLiteral("skewY")) {
|
|
return SVG_TRANSFORM_SKEWY;
|
|
}
|
|
if (aTransformType.EqualsLiteral("matrix")) {
|
|
return SVG_TRANSFORM_MATRIX;
|
|
}
|
|
return SVG_TRANSFORM_UNKNOWN;
|
|
}
|
|
|
|
SVGTransformSMILData::SVGTransformSMILData(const SVGTransform& aTransform)
|
|
: mTransformType(aTransform.Type()) {
|
|
MOZ_ASSERT(mTransformType >= SVG_TRANSFORM_MATRIX &&
|
|
mTransformType <= SVG_TRANSFORM_SKEWY,
|
|
"Unexpected transform type");
|
|
|
|
mParams.fill(0.f);
|
|
|
|
switch (mTransformType) {
|
|
case SVG_TRANSFORM_MATRIX: {
|
|
const gfxMatrix& mx = aTransform.GetMatrix();
|
|
mParams[0] = static_cast<float>(mx._11);
|
|
mParams[1] = static_cast<float>(mx._12);
|
|
mParams[2] = static_cast<float>(mx._21);
|
|
mParams[3] = static_cast<float>(mx._22);
|
|
mParams[4] = static_cast<float>(mx._31);
|
|
mParams[5] = static_cast<float>(mx._32);
|
|
break;
|
|
}
|
|
case SVG_TRANSFORM_TRANSLATE: {
|
|
const gfxMatrix& mx = aTransform.GetMatrix();
|
|
mParams[0] = static_cast<float>(mx._31);
|
|
mParams[1] = static_cast<float>(mx._32);
|
|
break;
|
|
}
|
|
case SVG_TRANSFORM_SCALE: {
|
|
const gfxMatrix& mx = aTransform.GetMatrix();
|
|
mParams[0] = static_cast<float>(mx._11);
|
|
mParams[1] = static_cast<float>(mx._22);
|
|
break;
|
|
}
|
|
case SVG_TRANSFORM_ROTATE:
|
|
mParams[0] = aTransform.Angle();
|
|
aTransform.GetRotationOrigin(mParams[1], mParams[2]);
|
|
break;
|
|
|
|
case SVG_TRANSFORM_SKEWX:
|
|
case SVG_TRANSFORM_SKEWY:
|
|
mParams[0] = aTransform.Angle();
|
|
break;
|
|
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("Unexpected transform type");
|
|
break;
|
|
}
|
|
}
|
|
|
|
SVGTransform SVGTransformSMILData::ToSVGTransform() const {
|
|
SVGTransform result;
|
|
|
|
switch (mTransformType) {
|
|
case SVG_TRANSFORM_MATRIX:
|
|
result.SetMatrix(gfxMatrix(mParams[0], mParams[1], mParams[2], mParams[3],
|
|
mParams[4], mParams[5]));
|
|
break;
|
|
|
|
case SVG_TRANSFORM_TRANSLATE:
|
|
result.SetTranslate(mParams[0], mParams[1]);
|
|
break;
|
|
|
|
case SVG_TRANSFORM_SCALE:
|
|
result.SetScale(mParams[0], mParams[1]);
|
|
break;
|
|
|
|
case SVG_TRANSFORM_ROTATE:
|
|
result.SetRotate(mParams[0], mParams[1], mParams[2]);
|
|
break;
|
|
|
|
case SVG_TRANSFORM_SKEWX:
|
|
result.SetSkewX(mParams[0]);
|
|
break;
|
|
|
|
case SVG_TRANSFORM_SKEWY:
|
|
result.SetSkewY(mParams[0]);
|
|
break;
|
|
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("Unexpected transform type");
|
|
break;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult SVGTransformSMILData::Distance(const SVGTransformSMILData& aOther,
|
|
double& aDistance) const {
|
|
NS_ASSERTION(mTransformType == aOther.mTransformType,
|
|
"Incompatible transform types to calculate distance between");
|
|
|
|
switch (mTransformType) {
|
|
// We adopt the SVGT1.2 notions of distance here
|
|
// See: http://www.w3.org/TR/SVGTiny12/animate.html#complexDistances
|
|
// (As discussed in bug #469040)
|
|
case SVG_TRANSFORM_TRANSLATE:
|
|
case SVG_TRANSFORM_SCALE: {
|
|
aDistance = NS_hypot(mParams[0] - aOther.mParams[0],
|
|
mParams[1] - aOther.mParams[1]);
|
|
} break;
|
|
|
|
case SVG_TRANSFORM_ROTATE:
|
|
case SVG_TRANSFORM_SKEWX:
|
|
case SVG_TRANSFORM_SKEWY: {
|
|
aDistance = std::abs(mParams[0] - aOther.mParams[0]);
|
|
} break;
|
|
|
|
default:
|
|
NS_ERROR("Got bad transform types for calculating distances");
|
|
aDistance = 1.0f;
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
} // namespace mozilla
|