| Line |
Branch |
Exec |
Source |
| 1 |
|
|
/*************************************************************** |
| 2 |
|
|
QGVCore |
| 3 |
|
|
Copyright (c) 2014, Bergont Nicolas, All rights reserved. |
| 4 |
|
|
|
| 5 |
|
|
This library is free software; you can redistribute it and/or |
| 6 |
|
|
modify it under the terms of the GNU Lesser General Public |
| 7 |
|
|
License as published by the Free Software Foundation; either |
| 8 |
|
|
version 3.0 of the License, or (at your option) any later version. |
| 9 |
|
|
|
| 10 |
|
|
This library is distributed in the hope that it will be useful, |
| 11 |
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 |
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 |
|
|
Lesser General Public License for more details. |
| 14 |
|
|
|
| 15 |
|
|
You should have received a copy of the GNU Lesser General Public |
| 16 |
|
|
License along with this library. |
| 17 |
|
|
***************************************************************/ |
| 18 |
|
|
|
| 19 |
|
|
#ifndef QGVCORE_H |
| 20 |
|
|
#define QGVCORE_H |
| 21 |
|
|
|
| 22 |
|
|
#include <QColor> |
| 23 |
|
|
#include <QPainterPath> |
| 24 |
|
|
#include <QPointF> |
| 25 |
|
|
#include <QPolygonF> |
| 26 |
|
|
|
| 27 |
|
|
// GraphViz headers |
| 28 |
|
|
#include <cgraph.h> |
| 29 |
|
|
#include <gvc.h> |
| 30 |
|
|
|
| 31 |
|
|
const qreal DotDefaultDPI = 72.0; |
| 32 |
|
|
|
| 33 |
|
|
/** |
| 34 |
|
|
* @brief GraphViz to GraphicsScene conversions |
| 35 |
|
|
* |
| 36 |
|
|
*/ |
| 37 |
|
|
class QGVCore { |
| 38 |
|
|
public: |
| 39 |
|
|
static qreal graphHeight(Agraph_t *graph); |
| 40 |
|
|
static bool gvToQtPos(QString att, qreal dpi, qreal gheight, QPointF &pos); |
| 41 |
|
|
static QString qtToGvPos(QPointF pos, qreal gheight); |
| 42 |
|
|
static QPointF toPoint(pointf p, qreal gheight); |
| 43 |
|
|
static QPointF toPoint(point p, qreal gheight); |
| 44 |
|
|
static QPointF centerToOrigin(const QPointF &p, qreal width, qreal height); |
| 45 |
|
|
static QPolygonF toPolygon(const polygon_t *poly, qreal width, qreal height); |
| 46 |
|
|
|
| 47 |
|
|
static QPainterPath toPath(const char *type, const polygon_t *poly, |
| 48 |
|
|
qreal width, qreal height); |
| 49 |
|
|
static QPainterPath toPath(const splines *spl, qreal gheight); |
| 50 |
|
|
|
| 51 |
|
|
static Qt::BrushStyle toBrushStyle(const QString &style); |
| 52 |
|
|
static Qt::PenStyle toPenStyle(const QString &style); |
| 53 |
|
|
static int toPenWidth(const QString &width); |
| 54 |
|
|
static QColor toColor(const QString &color); |
| 55 |
|
|
|
| 56 |
|
|
typedef struct { |
| 57 |
|
|
const char *data; |
| 58 |
|
|
int len; |
| 59 |
|
|
int cur; |
| 60 |
|
|
} rdr_t; |
| 61 |
|
|
|
| 62 |
|
✗ |
static int memiofread(void *chan, char *buf, int bufsize) { |
| 63 |
|
|
const char *ptr; |
| 64 |
|
|
char *optr; |
| 65 |
|
|
char c; |
| 66 |
|
|
int l; |
| 67 |
|
|
rdr_t *s; |
| 68 |
|
|
|
| 69 |
|
✗ |
if (bufsize == 0) return 0; |
| 70 |
|
✗ |
s = (rdr_t *)chan; |
| 71 |
|
✗ |
if (s->cur >= s->len) return 0; |
| 72 |
|
✗ |
l = 0; |
| 73 |
|
✗ |
ptr = s->data + s->cur; |
| 74 |
|
✗ |
optr = buf; |
| 75 |
|
|
do { |
| 76 |
|
✗ |
*optr++ = c = *ptr++; |
| 77 |
|
✗ |
l++; |
| 78 |
|
✗ |
} while (c && (c != '\n') && (l < bufsize)); |
| 79 |
|
✗ |
s->cur += l; |
| 80 |
|
✗ |
return l; |
| 81 |
|
|
} |
| 82 |
|
|
|
| 83 |
|
✗ |
static Agraph_t *agmemread2(const char *cp) { |
| 84 |
|
|
Agraph_t *g; |
| 85 |
|
|
rdr_t rdr; |
| 86 |
|
|
Agdisc_t disc; |
| 87 |
|
|
Agiodisc_t memIoDisc; |
| 88 |
|
|
|
| 89 |
|
✗ |
memIoDisc.afread = memiofread; |
| 90 |
|
✗ |
memIoDisc.putstr = AgIoDisc.putstr; |
| 91 |
|
✗ |
memIoDisc.flush = AgIoDisc.flush; |
| 92 |
|
✗ |
rdr.data = cp; |
| 93 |
|
✗ |
rdr.len = strlen(cp); |
| 94 |
|
✗ |
rdr.cur = 0; |
| 95 |
|
|
|
| 96 |
|
✗ |
disc.id = &AgIdDisc; |
| 97 |
|
✗ |
disc.io = &memIoDisc; |
| 98 |
|
✗ |
g = agread(&rdr, &disc); |
| 99 |
|
✗ |
return g; |
| 100 |
|
|
} |
| 101 |
|
|
}; |
| 102 |
|
|
|
| 103 |
|
|
#endif // QGVCORE_H |
| 104 |
|
|
|