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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /dom/svg/SVGTransform.h
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/svg/SVGTransform.h')
-rw-r--r--dom/svg/SVGTransform.h153
1 files changed, 153 insertions, 0 deletions
diff --git a/dom/svg/SVGTransform.h b/dom/svg/SVGTransform.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef DOM_SVG_SVGTRANSFORM_H_
+#define DOM_SVG_SVGTRANSFORM_H_
+
+#include "gfxMatrix.h"
+#include "mozilla/dom/SVGTransformBinding.h"
+#include "mozilla/gfx/Matrix.h"
+#include "nsDebug.h"
+
+namespace mozilla {
+
+/*
+ * The DOM wrapper class for this class is DOMSVGTransform.
+ */
+class SVGTransform {
+ public:
+ // Default ctor initialises to matrix type with identity matrix
+ SVGTransform()
+ : mMatrix() // Initialises to identity
+ ,
+ mAngle(0.f),
+ mOriginX(0.f),
+ mOriginY(0.f),
+ mType(dom::SVGTransform_Binding::SVG_TRANSFORM_MATRIX) {}
+
+ explicit SVGTransform(const gfxMatrix& aMatrix)
+ : mMatrix(aMatrix),
+ mAngle(0.f),
+ mOriginX(0.f),
+ mOriginY(0.f),
+ mType(dom::SVGTransform_Binding::SVG_TRANSFORM_MATRIX) {}
+
+ bool operator==(const SVGTransform& rhs) const {
+ return mType == rhs.mType && MatricesEqual(mMatrix, rhs.mMatrix) &&
+ mAngle == rhs.mAngle && mOriginX == rhs.mOriginX &&
+ mOriginY == rhs.mOriginY;
+ }
+
+ void GetValueAsString(nsAString& aValue) const;
+
+ float Angle() const { return mAngle; }
+ void GetRotationOrigin(float& aOriginX, float& aOriginY) const {
+ aOriginX = mOriginX;
+ aOriginY = mOriginY;
+ }
+ uint16_t Type() const { return mType; }
+
+ const gfxMatrix& GetMatrix() const { return mMatrix; }
+ void SetMatrix(const gfxMatrix& aMatrix);
+ void SetTranslate(float aTx, float aTy);
+ void SetScale(float aSx, float aSy);
+ void SetRotate(float aAngle, float aCx, float aCy);
+ nsresult SetSkewX(float aAngle);
+ nsresult SetSkewY(float aAngle);
+
+ static bool MatricesEqual(const gfxMatrix& a, const gfxMatrix& b) {
+ return a._11 == b._11 && a._12 == b._12 && a._21 == b._21 &&
+ a._22 == b._22 && a._31 == b._31 && a._32 == b._32;
+ }
+
+ protected:
+ gfxMatrix mMatrix;
+ float mAngle, mOriginX, mOriginY;
+ uint16_t mType;
+};
+
+/*
+ * A slightly more light-weight version of SVGTransform for SMIL animation.
+ *
+ * Storing the parameters in an array (rather than a matrix) also allows simpler
+ * (transform type-agnostic) interpolation and addition.
+ *
+ * The meaning of the mParams array depends on the transform type as follows:
+ *
+ * Type | mParams[0], mParams[1], mParams[2], ...
+ * --------------------+-----------------------------------------
+ * translate | tx, ty
+ * scale | sx, sy
+ * rotate | rotation-angle (in degrees), cx, cy
+ * skewX | skew-angle (in degrees)
+ * skewY | skew-angle (in degrees)
+ * matrix | a, b, c, d, e, f
+ *
+ * The matrix type is never generated by animation code (it is only produced
+ * when the user inserts one via the DOM) and often requires special handling
+ * when we do encounter it. Therefore many users of this class are only
+ * interested in the first three parameters and so we provide a special
+ * constructor for setting those parameters only.
+ */
+class SVGTransformSMILData {
+ public:
+ // Number of float-params required in constructor, if constructing one of the
+ // 'simple' transform types (all but matrix type)
+ static const uint32_t NUM_SIMPLE_PARAMS = 3;
+
+ // Number of float-params required in constructor for matrix type.
+ // This is also the number of params we actually store, regardless of type.
+ static const uint32_t NUM_STORED_PARAMS = 6;
+
+ explicit SVGTransformSMILData(uint16_t aType) : mTransformType(aType) {
+ MOZ_ASSERT(aType >= dom::SVGTransform_Binding::SVG_TRANSFORM_MATRIX &&
+ aType <= dom::SVGTransform_Binding::SVG_TRANSFORM_SKEWY,
+ "Unexpected transform type");
+ for (uint32_t i = 0; i < NUM_STORED_PARAMS; ++i) {
+ mParams[i] = 0.f;
+ }
+ }
+
+ SVGTransformSMILData(uint16_t aType, float (&aParams)[NUM_SIMPLE_PARAMS])
+ : mTransformType(aType) {
+ MOZ_ASSERT(aType >= dom::SVGTransform_Binding::SVG_TRANSFORM_TRANSLATE &&
+ aType <= dom::SVGTransform_Binding::SVG_TRANSFORM_SKEWY,
+ "Expected 'simple' transform type");
+ for (uint32_t i = 0; i < NUM_SIMPLE_PARAMS; ++i) {
+ mParams[i] = aParams[i];
+ }
+ for (uint32_t i = NUM_SIMPLE_PARAMS; i < NUM_STORED_PARAMS; ++i) {
+ mParams[i] = 0.f;
+ }
+ }
+
+ // Conversion to/from a fully-fledged SVGTransform
+ explicit SVGTransformSMILData(const SVGTransform& aTransform);
+ SVGTransform ToSVGTransform() const;
+
+ bool operator==(const SVGTransformSMILData& aOther) const {
+ if (mTransformType != aOther.mTransformType) return false;
+
+ for (uint32_t i = 0; i < NUM_STORED_PARAMS; ++i) {
+ if (mParams[i] != aOther.mParams[i]) {
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ bool operator!=(const SVGTransformSMILData& aOther) const {
+ return !(*this == aOther);
+ }
+
+ uint16_t mTransformType;
+ float mParams[NUM_STORED_PARAMS];
+};
+
+} // namespace mozilla
+
+#endif // DOM_SVG_SVGTRANSFORM_H_