1 files changed, 104 insertions, 0 deletions
diff --git a/nx-X11/lib/Xft1/xftmatrix.c b/nx-X11/lib/Xft1/xftmatrix.c
new file mode 100644
index 000000000..7feeccc94
--- /dev/null
+++ b/nx-X11/lib/Xft1/xftmatrix.c
@@ -0,0 +1,104 @@
+/*
+ * $XFree86: xc/lib/Xft/xftmatrix.c,v 1.1 2001/03/30 18:50:18 keithp Exp $
+ *
+ * Copyright © 2000 Tuomas J. Lukka
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Tuomas Lukka not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Tuomas Lukka makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * TUOMAS LUKKA DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL TUOMAS LUKKA BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <math.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include "xftint.h"
+
+XftMatrix *
+_XftSaveMatrix (const XftMatrix *mat) 
+{
+    XftMatrix *r;
+    if(!mat) 
+	return 0;
+    r = (XftMatrix *) malloc (sizeof (*r) );
+    if (!r)
+	return 0;
+    *r = *mat;
+    return r;
+}
+
+int
+XftMatrixEqual (const XftMatrix *mat1, const XftMatrix *mat2)
+{
+    if(mat1 == mat2) return True;
+    if(mat1 == 0 || mat2 == 0) return False;
+    return mat1->xx == mat2->xx && 
+	   mat1->xy == mat2->xy &&
+	   mat1->yx == mat2->yx &&
+	   mat1->yy == mat2->yy;
+}
+
+void
+XftMatrixMultiply (XftMatrix *result, XftMatrix *a, XftMatrix *b)
+{
+    XftMatrix	r;
+
+    r.xx = a->xx * b->xx + a->xy * b->yx;
+    r.xy = a->xx * b->xy + a->xy * b->yy;
+    r.yx = a->yx * b->xx + a->yy * b->yx;
+    r.yy = a->yx * b->xy + a->yy * b->yy;
+    *result = r;
+}
+
+void
+XftMatrixRotate (XftMatrix *m, double c, double s)
+{
+    XftMatrix	r;
+
+    /*
+     * X Coordinate system is upside down, swap to make
+     * rotations counterclockwise
+     */
+    r.xx = c;
+    r.xy = -s;
+    r.yx = s;
+    r.yy = c;
+    XftMatrixMultiply (m, &r, m);
+}
+
+void
+XftMatrixScale (XftMatrix *m, double sx, double sy)
+{
+    XftMatrix	r;
+
+    r.xx = sx;
+    r.xy = 0;
+    r.yx = 0;
+    r.yy = sy;
+    XftMatrixMultiply (m, &r, m);
+}
+
+void
+XftMatrixShear (XftMatrix *m, double sh, double sv)
+{
+    XftMatrix	r;
+
+    r.xx = 1;
+    r.xy = sh;
+    r.yx = sv;
+    r.yy = 1;
+    XftMatrixMultiply (m, &r, m);
+}