/usr/include/fontforge/delta.h is in libfontforge-dev 1:20170731~dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 | /* Copyright (C) 2009-2012 by George Williams */
/*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _DELTA_H
#define _DELTA_H
typedef struct {
SplineChar *sc;
int size;
int nearestpt; /* Point on spline closest to the questionable grid square */
int x,y; /* Of the lower left corner of the grid square */
double distance;
} QuestionableGrid;
struct qgnode {
QuestionableGrid *first;
struct qgnode *kids, *parent;
int kid_cnt, qg_cnt, tot_under;
uint8 open;
char *name;
};
enum qg_error { qg_ok, qg_notnumber, qg_badnumber, qg_badrange, qg_nofont };
enum glyph_sort { gs_unicode, gs_alpha, gs_gid };
enum info_sort { is_glyph_size_pt, is_glyph_pt_size, is_size_glyph_pt };
typedef struct qg_data {
/* Set by dlg */
FontViewBase *fv;
struct charview *cv;
SplineChar *sc;
int layer;
double within; /* Return center points which are less than within from a spline */
char *pixelsizes;
int dpi;
int depth;
/* Used internally */
void *freetype_context;
int cur_size;
/* Set internally */
QuestionableGrid *qg;
int cur, max, glyph_start;
enum qg_error error;
/* Dlg internal */
struct gwindow *gw;
int done;
/* Second dlg */
struct font_instance *font;
int fh,as;
int vlcnt; /* # physical lines in "v" window */
int lcnt; /* # logical lines currently open */
int loff_top;
struct ggadget *vsb;
struct gwindow *v;
enum glyph_sort glyph_sort;
enum info_sort info_sort;
struct qgnode list;
uint8 inprocess;
} QGData;
extern void TopFindQuestionablePoints(struct qg_data *data);
#endif /* _DELTA_H */
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