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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /gfx/thebes/gfxMatrix.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'gfx/thebes/gfxMatrix.cpp')
-rw-r--r--gfx/thebes/gfxMatrix.cpp189
1 files changed, 189 insertions, 0 deletions
diff --git a/gfx/thebes/gfxMatrix.cpp b/gfx/thebes/gfxMatrix.cpp
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+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * 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 "gfxMatrix.h"
+#include "cairo.h"
+#include "mozilla/gfx/Tools.h"
+#include "mozilla/gfx/Matrix.h" // for Matrix4x4
+
+#define CAIRO_MATRIX(x) reinterpret_cast<cairo_matrix_t*>((x))
+#define CONST_CAIRO_MATRIX(x) reinterpret_cast<const cairo_matrix_t*>((x))
+
+const gfxMatrix&
+gfxMatrix::Reset()
+{
+ cairo_matrix_init_identity(CAIRO_MATRIX(this));
+ return *this;
+}
+
+bool
+gfxMatrix::Invert()
+{
+ return cairo_matrix_invert(CAIRO_MATRIX(this)) == CAIRO_STATUS_SUCCESS;
+}
+
+gfxMatrix&
+gfxMatrix::Scale(gfxFloat x, gfxFloat y)
+{
+ cairo_matrix_scale(CAIRO_MATRIX(this), x, y);
+ return *this;
+}
+
+gfxMatrix&
+gfxMatrix::Translate(const gfxPoint& pt)
+{
+ cairo_matrix_translate(CAIRO_MATRIX(this), pt.x, pt.y);
+ return *this;
+}
+
+gfxMatrix&
+gfxMatrix::Rotate(gfxFloat radians)
+{
+ cairo_matrix_rotate(CAIRO_MATRIX(this), radians);
+ return *this;
+}
+
+const gfxMatrix&
+gfxMatrix::operator *= (const gfxMatrix& m)
+{
+ cairo_matrix_multiply(CAIRO_MATRIX(this), CAIRO_MATRIX(this), CONST_CAIRO_MATRIX(&m));
+ return *this;
+}
+
+gfxMatrix&
+gfxMatrix::PreMultiply(const gfxMatrix& m)
+{
+ cairo_matrix_multiply(CAIRO_MATRIX(this), CONST_CAIRO_MATRIX(&m), CAIRO_MATRIX(this));
+ return *this;
+}
+
+/* static */ gfxMatrix
+gfxMatrix::Rotation(gfxFloat aAngle)
+{
+ gfxMatrix newMatrix;
+
+ gfxFloat s = sin(aAngle);
+ gfxFloat c = cos(aAngle);
+
+ newMatrix._11 = c;
+ newMatrix._12 = s;
+ newMatrix._21 = -s;
+ newMatrix._22 = c;
+
+ return newMatrix;
+}
+
+gfxPoint
+gfxMatrix::Transform(const gfxPoint& point) const
+{
+ gfxPoint ret = point;
+ cairo_matrix_transform_point(CONST_CAIRO_MATRIX(this), &ret.x, &ret.y);
+ return ret;
+}
+
+gfxSize
+gfxMatrix::Transform(const gfxSize& size) const
+{
+ gfxSize ret = size;
+ cairo_matrix_transform_distance(CONST_CAIRO_MATRIX(this), &ret.width, &ret.height);
+ return ret;
+}
+
+gfxRect
+gfxMatrix::Transform(const gfxRect& rect) const
+{
+ return gfxRect(Transform(rect.TopLeft()), Transform(rect.Size()));
+}
+
+gfxRect
+gfxMatrix::TransformBounds(const gfxRect& rect) const
+{
+ /* Code taken from cairo-matrix.c, _cairo_matrix_transform_bounding_box isn't public */
+ int i;
+ double quad_x[4], quad_y[4];
+ double min_x, max_x;
+ double min_y, max_y;
+
+ quad_x[0] = rect.X();
+ quad_y[0] = rect.Y();
+ cairo_matrix_transform_point (CONST_CAIRO_MATRIX(this), &quad_x[0], &quad_y[0]);
+
+ quad_x[1] = rect.XMost();
+ quad_y[1] = rect.Y();
+ cairo_matrix_transform_point (CONST_CAIRO_MATRIX(this), &quad_x[1], &quad_y[1]);
+
+ quad_x[2] = rect.X();
+ quad_y[2] = rect.YMost();
+ cairo_matrix_transform_point (CONST_CAIRO_MATRIX(this), &quad_x[2], &quad_y[2]);
+
+ quad_x[3] = rect.XMost();
+ quad_y[3] = rect.YMost();
+ cairo_matrix_transform_point (CONST_CAIRO_MATRIX(this), &quad_x[3], &quad_y[3]);
+
+ min_x = max_x = quad_x[0];
+ min_y = max_y = quad_y[0];
+
+ for (i = 1; i < 4; i++) {
+ if (quad_x[i] < min_x)
+ min_x = quad_x[i];
+ if (quad_x[i] > max_x)
+ max_x = quad_x[i];
+
+ if (quad_y[i] < min_y)
+ min_y = quad_y[i];
+ if (quad_y[i] > max_y)
+ max_y = quad_y[i];
+ }
+
+ return gfxRect(min_x, min_y, max_x - min_x, max_y - min_y);
+}
+
+
+static void NudgeToInteger(double *aVal)
+{
+ float f = float(*aVal);
+ mozilla::gfx::NudgeToInteger(&f);
+ *aVal = f;
+}
+
+gfxMatrix&
+gfxMatrix::NudgeToIntegers(void)
+{
+ NudgeToInteger(&_11);
+ NudgeToInteger(&_21);
+ NudgeToInteger(&_12);
+ NudgeToInteger(&_22);
+ NudgeToInteger(&_31);
+ NudgeToInteger(&_32);
+ return *this;
+}
+
+mozilla::gfx::Matrix4x4
+gfxMatrix::operator *(const mozilla::gfx::Matrix4x4& aMatrix) const
+{
+ Matrix4x4 resultMatrix;
+
+ resultMatrix._11 = _11 * aMatrix._11 + _12 * aMatrix._21;
+ resultMatrix._12 = _11 * aMatrix._12 + _12 * aMatrix._22;
+ resultMatrix._13 = _11 * aMatrix._13 + _12 * aMatrix._23;
+ resultMatrix._14 = _11 * aMatrix._14 + _12 * aMatrix._24;
+
+ resultMatrix._21 = _21 * aMatrix._11 + _22 * aMatrix._21;
+ resultMatrix._22 = _21 * aMatrix._12 + _22 * aMatrix._22;
+ resultMatrix._23 = _21 * aMatrix._13 + _22 * aMatrix._23;
+ resultMatrix._24 = _21 * aMatrix._14 + _22 * aMatrix._24;
+
+ resultMatrix._31 = aMatrix._31;
+ resultMatrix._32 = aMatrix._32;
+ resultMatrix._33 = aMatrix._33;
+ resultMatrix._34 = aMatrix._34;
+
+ resultMatrix._41 = _31 * aMatrix._11 + _32 * aMatrix._21 + aMatrix._41;
+ resultMatrix._42 = _31 * aMatrix._12 + _32 * aMatrix._22 + aMatrix._42;
+ resultMatrix._43 = _31 * aMatrix._13 + _32 * aMatrix._23 + aMatrix._43;
+ resultMatrix._44 = _31 * aMatrix._14 + _32 * aMatrix._24 + aMatrix._44;
+
+ return resultMatrix;
+}