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-rw-r--r--pango/mini-xft/minixftmatrix.c104
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diff --git a/pango/mini-xft/minixftmatrix.c b/pango/mini-xft/minixftmatrix.c
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--- a/pango/mini-xft/minixftmatrix.c
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-/*
- * $XFree86: xc/lib/MiniXft/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 "minixftint.h"
-
-MiniXftMatrix *
-_MiniXftSaveMatrix (const MiniXftMatrix *mat)
-{
- MiniXftMatrix *r;
- if(!mat)
- return 0;
- r = (MiniXftMatrix *) malloc (sizeof (*r) );
- if (!r)
- return 0;
- *r = *mat;
- return r;
-}
-
-int
-MiniXftMatrixEqual (const MiniXftMatrix *mat1, const MiniXftMatrix *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
-MiniXftMatrixMultiply (MiniXftMatrix *result, MiniXftMatrix *a, MiniXftMatrix *b)
-{
- MiniXftMatrix 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
-MiniXftMatrixRotate (MiniXftMatrix *m, double c, double s)
-{
- MiniXftMatrix r;
-
- /*
- * X Coordinate system is upside down, swap to make
- * rotations counterclockwise
- */
- r.xx = c;
- r.xy = -s;
- r.yx = s;
- r.yy = c;
- MiniXftMatrixMultiply (m, &r, m);
-}
-
-void
-MiniXftMatrixScale (MiniXftMatrix *m, double sx, double sy)
-{
- MiniXftMatrix r;
-
- r.xx = sx;
- r.xy = 0;
- r.yx = 0;
- r.yy = sy;
- MiniXftMatrixMultiply (m, &r, m);
-}
-
-void
-MiniXftMatrixShear (MiniXftMatrix *m, double sh, double sv)
-{
- MiniXftMatrix r;
-
- r.xx = 1;
- r.xy = sh;
- r.yx = sv;
- r.yy = 1;
- MiniXftMatrixMultiply (m, &r, m);
-}