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📄 box.lefty(3.53 KB)
📄 def.lefty(459 B)
📄 dotty.lefty(22.5 KB)
📄 dotty_draw.lefty(19.48 KB)
📄 dotty_edit.lefty(17.62 KB)
📄 dotty_layout.lefty(14.23 KB)
📄 dotty_ui.lefty(13.88 KB)
📄 fractal.lefty(2.65 KB)
📄 fractal2.lefty(5.62 KB)
📄 lefty.psp(2.37 KB)
📄 slides.lefty(3.12 KB)
📄 tree.lefty(4.9 KB)

Editing: dotty.lefty

#
# DOTTY
#
dotty = [
    'keys' = [
        'nid'    = 'nid';
        'eid'    = 'eid';
        'gid'    = 'gid';
        'name'   = 'name';
        'attr'   = 'attr';
        'gattr'  = 'graphattr';
        'eattr'  = 'edgeattr';
        'nattr'  = 'nodeattr';
        'edges'  = 'edges';
        'tail'   = 'tail';
        'tport'  = 'tport';
        'head'   = 'head';
        'hport'  = 'hport';
        'pos'    = 'pos';
        'size'   = 'size';
        'rect'   = 'rect';
        'fname'  = 'fontname';
        'fsize'  = 'fontsize';
        'fcolor' = 'fontcolor';
        'dcolor' = 'drawcolor';
        'bcolor' = 'fillcolor';
    ];
    'maps' = [
        'X11' = [
            'fontmap' = [
                'Times-Roman'    = '-*-times-medium-r-*--%d-*-*-*-*-*-*-1';
                'Times-Italic'   = '-*-times-medium-i-*--%d-*-*-*-*-*-*-1';
                'Times-Bold'     = '-*-times-bold-r-*--%d-*-*-*-*-*-*-1';
                'Courier'        = '-*-courier-bold-r-*--%d-*-*-*-*-*-*-1';
                'Courier-Bold'   = '-*-courier-bold-r-*--%d-*-*-*-*-*-*-1';
                'Helvetica'      = (
                     '-*-helvetica-medium-r-normal--%d-*-*-*-p-*-iso8859-1'
                );
                'Helvetica-Bold' = (
                    '-*-helvetica-bold-r-normal--%d-*-*-*-p-*-iso8859-1'
                );
            ];
            'psfontmap' = [
                'Times-Roman'    = 'Times-Roman';
                'Times-Italic'   = 'Times-Italic';
                'Times-Bold'     = 'Times-Bold';
                'Courier'        = 'Courier';
                'Courier-Bold'   = 'Courier-Bold';
                'Helvetica'      = 'Helvetica';
                'Helvetica-Bold' = 'Helvetica-Bold';
            ];
        ];
        'mswin' = [
            'fontmap' = [
                'Times-Roman'    = 'Times New Roman';
                'Times-Italic'   = 'Times New Roman Italic';
                'Times-Bold'     = 'Times New Roman Bold';
                'Courier'        = 'Courier New';
                'Courier-Bold'   = 'Courier New Bold';
                'Helvetica'      = 'Arial';
                'Helvetica-Bold' = 'Arial Bold';
            ];
            'psfontmap' = [
                'Times-Roman'    = 'Times New Roman';
                'Times-Italic'   = 'Times New Roman Italic';
                'Times-Bold'     = 'Times New Roman Bold';
                'Courier'        = 'Courier New';
                'Courier-Bold'   = 'Courier New Bold';
                'Helvetica'      = 'Arial';
                'Helvetica-Bold' = 'Arial Bold';
            ];
        ];
    ];
    'protogt' = [
        'graph' = [
            'graphattr' = [
                'fontsize' = '14';
                'fontname' = 'Times-Roman';
                'fontcolor' = 'black';
            ];
            'nodeattr' = [
                'shape' = 'ellipse';
                'fontsize' = '14';
                'fontname' = 'Times-Roman';
                'fontcolor' = 'black';
                'style' = 'solid';
            ];
            'edgeattr' = [
                'fontsize' = '14';
                'fontname' = 'Times-Roman';
                'fontcolor' = 'black';
                'style' = 'solid';
            ];
            'graphdict' = [];
            'nodedict' = [];
            'graphs' = [];
            'nodes' = [];
            'edges' = [];
            'maxgid' = 0;
            'maxnid' = 0;
            'maxeid' = 0;
            'type' = 'digraph';
        ];
        'layoutmode' = 'sync';
        'lserver' = 'dot';
        'edgehandles' = 1;
        'noundo' = 0;
    ];
    'lservers' = [];
    'mlevel' = 0;
    'graphs' = [];
    'views' = [];
    'protovt' = [
        'normal' = [
            'name' = 'DOTTY';
            'orig' = ['x' = 1; 'y' = 1;];
            'size' = ['x' = 420; 'y' = 520;];
            'wrect' = [
                0 = ['x' = 0; 'y' = 0;];
                1 = ['x' = 400; 'y' = 500;];
            ];
            'vsize' = ['x' = 400; 'y' = 500;];
            'w2v' = 1;
        ];
        'birdseye' = [
            'type' = 'birdseye';
            'name' = 'DOTTY birdseye view';
            'orig' = ['x' = 1; 'y' = 1;];
            'size' = ['x' = 220; 'y' = 260;];
            'wrect' = [
                0 = ['x' = 0; 'y' = 0;];
                1 = ['x' = 200; 'y' = 250;];
            ];
            'vsize' = ['x' = 200; 'y' = 250;];
            'w2v' = 1;
        ];
    ];
    'pagesizes' = [
        '8.5x11' = ['x' =    8; 'y' = 10.5;];
        '11x17'  = ['x' = 10.5; 'y' = 16.5;];
        '36x50'  = ['x' = 35.5; 'y' = 49.5;];
    ];
];
load ('dotty_draw.lefty');
load ('dotty_edit.lefty');
load ('dotty_layout.lefty');
load ('dotty_ui.lefty');
#
# initialization functions
#
dotty.init = function () {
    dotty.fontmap = dotty.maps[getenv ('LEFTYWINSYS')].fontmap;
    dotty.clipgt = dotty.protogt.creategraph (['noundo' = 1;]);
    dotty.inited = 1;
};
dotty.simple = function (file) {
    if (dotty.inited ~= 1)
        dotty.init ();
    dotty.createviewandgraph (file, 'file', null, null);
    txtview ('off');
};
#
# main operations
#
dotty.protogt.creategraph = function (protogt) {
    local gt, id, gtid;

if (~protogt)
        protogt = dotty.protogt;
    for (gtid = 0; dotty.graphs[gtid]; gtid = gtid + 1)
        ;
    gt = (dotty.graphs[gtid] = []);
    if (protogt.mode ~= 'replace') {
        for (id in dotty.protogt)
            gt[id] = copy (dotty.protogt[id]);
    }
    for (id in protogt)
        gt[id] = copy (protogt[id]);
    gt.gtid = gtid;
    gt.views = [];
    gt.undoarray = ['level' = 0; 'entries' = [];];
    gt.busy = 0;
    return gt;
};
dotty.protogt.copygraph = function (ogt) {
    local gt, gtid, id;

for (gtid = 0; dotty.graphs[gtid]; gtid = gtid + 1)
        ;
    gt = (dotty.graphs[gtid] = []);
    for (id in ogt)
        gt[id] = copy (ogt[id]);
    gt.gtid = gtid;
    gt.views = [];
    gt.undoarray = ['level' = 0; 'entries' = [];];
    gt.busy = 0;
    return gt;
};
dotty.protogt.destroygraph = function (gt) {
    local vid, vlist;

if (gt.layoutpending > 0)
        gt.cancellayout (gt);
    for (vid in gt.views)
        vlist[vid] = gt.views[vid];
    for (vid in gt.views)
        gt.destroyview (gt, vlist[vid]);
    remove (gt.gtid, dotty.graphs);
};
dotty.protogt.loadgraph = function (gt, name, type, protograph, layoutflag) {
    local fd, vid, vt, graph, nid, eid, gid;

if (gt.layoutpending > 0)
        gt.cancellayout (gt);
    if (~name)
        if (~(name = ask ('file name:', 'file', '')))
            return;
    dotty.pushbusy (gt, gt.views);
    dotty.message (1, 'loading');
    if (~protograph)
        protograph = dotty.protogt.graph;
    if (
        ~((fd = dotty.openio (name, type, 'r')) >= 0) |
        ~(graph = readgraph (fd, protograph))
    ) {
        dotty.message (0, 'cannot load graph');
        dotty.popbusy (gt, gt.views);
        return;
    }
    for (vid in gt.views) {
        vt = gt.views[vid];
        vt.colors = [];
        vt.colorn = 2;
    }
    gt.graph = graph;
    gt.name = name;
    gt.type = type;
    gt.undoarray = ['level' = 0; 'entries' = [];];
    if (~(type == 'file' & name == '-'))
        closeio (fd);
    graph.maxgid = tablesize (graph.graphs);
    graph.maxnid = tablesize (graph.nodes);
    graph.maxeid = tablesize (graph.edges);
    for (nid in graph.nodes)
        graph.nodes[nid][dotty.keys.nid] = nid;
    for (eid in graph.edges)
        graph.edges[eid][dotty.keys.eid] = eid;
    for (gid in graph.graphs)
        graph.graphs[gid][dotty.keys.gid] = gid;
    gt.unpackattr (gt);
    if (layoutflag) {
        dotty.message (1, 'generating layout');
        gt.layoutgraph (gt);
    }
    dotty.popbusy (gt, gt.views);
    return gt.graph;
};
dotty.protogt.savegraph = function (gt, name, type) {
    local fd;

if (~name)
        if (~(name = ask ('file name:', 'file', '')))
            return;
    if (
        ~((fd = dotty.openio (name, type, 'w')) >= 0) |
        ~writegraph (fd, gt.graph, 0)
    ) {
        dotty.message (0, 'cannot save graph');
        return;
    }
    if (~(type == 'file' & name == '-'))
        closeio (fd);
};
dotty.protogt.setgraph = function (gt, graph) {
    local vid, vt, nid, eid, gid;

if (gt.layoutpending > 0)
        gt.cancellayout (gt);
    for (vid in gt.views) {
        vt = gt.views[vid];
        vt.colors = [];
        vt.colorn = 2;
    }
    gt.graph = copy (graph);
    gt.undoarray = ['level' = 0; 'entries' = [];];
    gt.unpackattr (gt);
    gt.graph.maxgid = tablesize (graph.graphs);
    gt.graph.maxnid = tablesize (graph.nodes);
    gt.graph.maxeid = tablesize (graph.edges);
    for (nid in gt.graph.nodes)
        gt.graph.nodes[nid][dotty.keys.nid] = nid;
    for (eid in gt.graph.edges)
        gt.graph.edges[eid][dotty.keys.eid] = eid;
    for (gid in gt.graph.graphs)
        gt.graph.graphs[gid][dotty.keys.gid] = gid;
    gt.unpackattr (gt);
    dotty.message (1, 'generating layout');
    gt.layoutgraph (gt);
    return gt.graph;
};
dotty.protogt.erasegraph = function (gt, protogt, protovt) {
    local vid, vt;

if (gt.layoutpending > 0)
        gt.cancellayout (gt);
    for (vid in gt.views) {
        vt = gt.views[vid];
        vt.colors = [];
        vt.colorn = 2;
        clear (vt.canvas);
    }
    if (~protogt)
        protogt = dotty.protogt;
    gt.graph = copy (protogt.graph);
    gt.undoarray = ['level' = 0; 'entries' = [];];
};
dotty.protogt.layoutgraph = function (gt) {
    if (gt.graph.graphattr.xdotversion) {
        gt.unpacklayout (gt, gt.graph);
        gt.setviewsize (gt.views, gt.graph.rect);
        gt.redrawgraph (gt, gt.views);
        return;
    }
    if (gt.layoutmode == 'async') {
        if (~gt.haveinput) {
            gt.startlayout (gt);
            return;
        }
        if (~gt.finishlayout (gt))
            return;
        gt.setviewsize (gt.views, gt.graph.rect);
        gt.redrawgraph (gt, gt.views);
    } else {
        if (~gt.startlayout (gt))
            return;
        else
            while (~gt.finishlayout (gt))
                ;
        gt.setviewsize (gt.views, gt.graph.rect);
        gt.redrawgraph (gt, gt.views);
    }
};
dotty.protogt.createview = function (gt, protovt) {
    local vt, ovt, id, t;

vt = [];
    vt.colors = [];
    vt.colorn = 2;
    if (~protovt)
        protovt = dotty.protovt.normal;
    if (protovt.mode ~= 'replace') {
        for (id in dotty.protovt[protovt.type])
            vt[id] = copy (dotty.protovt[protovt.type][id]);
    }
    for (id in protovt)
        vt[id] = copy (protovt[id]);
    if (~(vt.parent >= 0)) {
        vt.view = createwidget (-1, [
            'type'   = 'view';
            'name'   = vt.name;
            'origin' = vt.orig;
            'size'   = vt.size;
        ]);
        vt.scroll = createwidget (vt.view, ['type' = 'scroll';]);
    } else {
        vt.view = -1;
        vt.scroll = createwidget (vt.parent, [
            'type' = 'scroll';
            'size' = vt.size;
        ]);
    }
    vt.canvas = createwidget (vt.scroll, [
        'type' = 'canvas';
        'color' = [0 = protovt.bgcolor; 1 = protovt.fgcolor;];
    ]);
    setwidgetattr (vt.canvas, [
        'window' = vt.wrect;
        'viewport' = vt.vsize;
    ]);
    clear (vt.canvas);
    dotty.views[vt.canvas] = vt;
    vt.vtid = vt.canvas;
    vt.gtid = gt.gtid;
    gt.views[vt.vtid] = vt;
    dotty.views[vt.scroll] = vt;
    if (vt.view ~= -1)
        dotty.views[vt.view] = vt;
    if (protovt.colors & tablesize (protovt.colors) > 0) {
        for (id in protovt.colors)
            if (id == '_bgcolor_')
                setwidgetattr (vt.canvas, [
                    'color' = [0 = protovt.colors[id];];
                ]);
            else if (setwidgetattr (vt.canvas, ['color' = [
                protovt.colors[id] = id;
            ];]) ~= 1) {
                t = split (id, ' ');
                if (tablesize (t) ~= 3 | setwidgetattr (vt.canvas, [
                    'color' = [protovt.colors[id] = [
                        'h' = ston (t[0]); 's' = ston (t[1]); 'v' = ston (t[2]);
                    ];];
                ]) ~= 1) {
                    dotty.message (
                        0, concat ('unknown color ', id, ' using #1')
                    );
                }
            }
        vt.colors = copy (protovt.colors);
        vt.colorn = protovt.colorn;
    } else if (tablesize (gt.views) > 1) {
        for (id in gt.views)
            if (gt.views[id] ~= vt)
                break;
        ovt = gt.views[id];
        for (id in ovt.colors)
            if (id == '_bgcolor_')
                setwidgetattr (vt.canvas, ['color' = [0 = ovt.colors[id];];]);
            else if (setwidgetattr (vt.canvas, ['color' = [
                ovt.colors[id] = id;
            ];]) ~= 1) {
                t = split (id, ' ');
                if (tablesize (t) ~= 3 | setwidgetattr (vt.canvas, [
                    'color' = [ovt.colors[id] = [
                        'h' = ston (t[0]); 's' = ston (t[1]); 'v' = ston (t[2]);
                    ];];
                ]) ~= 1) {
                    dotty.message (
                        0, concat ('unknown color ', id, ' using #1')
                    );
                }
            }
        vt.colors = copy (ovt.colors);
        vt.colorn = ovt.colorn;
    }
    if (gt.graph.rect)
        gt.setviewsize ([vt.vtid = vt;], gt.graph.rect);
    gt.drawgraph (gt, [vt.vtid = vt;]);
    for (id in vt.uifuncs)
        if (id == 'closeview')
            widgets[vt.view][id] = vt.uifuncs[id];
        else
            widgets[vt.canvas][id] = vt.uifuncs[id];
    return vt;
};
dotty.protogt.destroyview = function (gt, vt) {
    destroywidget (vt.canvas);
    destroywidget (vt.scroll);
    if (vt.view ~= -1) {
        destroywidget (vt.view);
        remove (vt.view, dotty.views);
    }
    remove (vt.scroll, dotty.views);
    remove (vt.canvas, dotty.views);
    if (vt.gtid >= 0)
        remove (vt.vtid, gt.views);
    if (tablesize (dotty.views) == 0)
        exit ();
};
dotty.protogt.zoom = function (gt, vt, factor, pos) {
    gt.setviewscale ([vt.vtid = vt;], factor);
    if (pos)
        gt.setviewcenter ([vt.vtid = vt;], pos);
    gt.redrawgraph (gt, [vt.vtid = vt;]);
};
dotty.protogt.findnode = function (gt, vt) {
    local key, node, node1, nid;

if (~(key = ask ('give node name or label')))
        return;
    if (gt.graph.nodedict[key] >= 0)
        node = gt.graph.nodes[gt.graph.nodedict[key]];
    else if (gt.graph.nodedict[ston (key)] >= 0)
        node = gt.graph.nodes[gt.graph.nodedict[ston (key)]];
    else {
        for (nid in gt.graph.nodes) {
            node1 = gt.graph.nodes[nid];
            if (node1.attr.label == key | node1.attr.label == ston (key)) {
                node = node1;
                break;
            }
        }
    }
    if (~node) {
        dotty.message (0, concat ('cannot find node: ', key));
        return;
    }
    gt.setviewcenter ([vt.vtid = vt;], node.pos);
};
dotty.protogt.setattr = function (gt, obj) {
    local kv, t, attr, value, n, i, s;

if (~(kv = ask ('give attr/value, eg. color=blue')))
        return;
    t = split (kv, '=');
    attr = t[0];
    value = t[1];
    if ((n = tablesize (t)) > 2)
        for (i = 2; i < n; i = i + 1)
            value = concat (value, '=', t[i]);
    # Check for HTML string and convert using lefty convention
    s = split (value, '');
    n = tablesize (s);
    if ((s[0] == '<') & (s[n-1] == '>')) {
        s[0] = '>';
        s[n-1] = '<';
        value = s[0]; 
        for (i = 1; i < n; i = i + 1)
            value = concat (value, s[i]);
    }
    if (
        obj.attr == gt.graph.graphattr |
        obj.attr == gt.graph.edgeattr |
        obj.attr == gt.graph.nodeattr
    ) {
        obj.attr[attr] = value;
        return;
    }
    if (obj.nid >= 0) {
        gt.undrawnode (gt, gt.views, obj);
        obj.attr[attr] = value;
        gt.unpacknodeattr (gt, obj);
        gt.drawnode (gt, gt.views, obj);
    } else if (obj.eid >= 0) {
        gt.undrawedge (gt, gt.views, obj);
        obj.attr[attr] = value;
        gt.unpackedgeattr (gt, obj);
        gt.drawedge (gt, gt.views, obj);
    }
};
dotty.protogt.getattr = function (gt, node) {
    local kv;

if (~(kv.key = ask ('give attr name')))
        return null;
    if ((kv.val = node.attr[kv.key]))
        return kv;
    return null;
};
#
# utilities
#
dotty.createviewandgraph = function (name, type, protogt, protovt) {
    local vt, gt;

if (~protogt)
        protogt = dotty.protogt;
    if (protogt.creategraph)
        gt = protogt.creategraph (protogt);
    else
        gt = dotty.protogt.creategraph (protogt);
    vt = gt.createview (gt, protovt);
    if (~protogt.graph)
        protogt.graph = copy (dotty.protogt.graph);
    if (name)
        gt.loadgraph (gt, name, type, protogt.graph, 1);
    return ['gt' = gt; 'vt' = vt;];
};
dotty.openio = function (name, type, mode) {
    local fd;

if (~name)
        return null;
    if (type == 'file') {
        if (name == '-') {
            if (mode == 'r' | mode == 'r+')
                fd = 0;
            else
                fd = 1;
        } else if (~((fd = openio ('file', name, mode)) >= 0)) {
            dotty.message (0, concat ('cannot open file: ', name));
            return null;
        }
    } else if (type == 'pipe') {
        if (~((fd = openio (
            'pipe', 'ksh', mode, concat ("%e ", name)
        )) >= 0)) {
            dotty.message (0, concat ('cannot run command: ', name));
            return null;
        }
    } else
        return null;
    return fd;
};
dotty.pushbusy = function (gt, views) {
    local vid;

if (gt.busy == 0)
        for (vid in gt.views)
            setwidgetattr (vid, ['cursor' = 'watch';]);
    gt.busy = gt.busy + 1;
};
dotty.popbusy = function (gt, views) {
    local vid;

gt.busy = gt.busy - 1;
    if (gt.busy == 0)
        for (vid in gt.views)
            setwidgetattr (vid, ['cursor' = 'default';]);
};
dotty.message = function (level, text) {
    if (level <= dotty.mlevel)
        echo ('dotty.lefty: ', text);
};
#
# printing or saving to file
#
dotty.protogt.printorsave = function (gt, vt, otype, name, mode, ptype) {
    local pr, wrect, vsize, xy, psize, canvas, pscanvas, cid, cname, t;
    local graph, edgehandles, fontmap, eid, edge, nid, node, gid, sgraph;
    local did, draw, i;

if (~otype)
        if (~(otype = ask ('print to', 'choice', 'file|printer')))
            return;
    if (otype == 'printer') {
        if (~getenv ('TMPDIR'))
            name = concat (getenv ('HOME'), '/.dottyout.ps');
        else
            name = concat (getenv ('TMPDIR'), '/.dottyout.ps', random (10000));
        if (getenv ('LEFTYWINSYS') ~= 'mswin' & ~pr)
            if (~(pr = ask ('printer command', 'string', 'lpr')))
                return;
    }
    if (~name)
        if (~(name = ask ('postscript file', 'file', 'out.ps')))
            return;
    if (~ptype)
        if (~(ptype = ask ('page size', 'choice', '8.5x11|11x17|36x50')))
            return;
    if (~mode)
        if (~(mode = ask ('mode', 'choice', 'portrait|landscape|best fit')))
            return;
    wrect = copy (vt.wrect);
    wrect[0].x = wrect[0].x - 1;
    wrect[1].x = wrect[1].x + 1;
    wrect[0].y = wrect[0].y - 1;
    wrect[1].y = wrect[1].y + 1;
    vsize = copy (vt.vsize);
    if (vsize.x == 0)
        vsize.x = 1;
    if (vsize.y == 0)
        vsize.y = 1;
    xy = vsize.x / vsize.y;
    if (mode == 'best fit') {
        if (xy < 1)
            mode = 'portrait';
        else
            mode = 'landscape';
    }
    psize = dotty.pagesizes[ptype];
    if (mode == 'portrait') {
        if (xy < psize.x / psize.y) {
            vsize.y = psize.y * 300;
            vsize.x = vsize.y * xy;
        } else {
            vsize.x = psize.x * 300;
            vsize.y = vsize.x / xy;
        }
    } else {
        if (xy < psize.y / psize.x) {
            vsize.y = psize.x * 300;
            vsize.x = vsize.y * xy;
        } else {
            vsize.x = psize.y * 300;
            vsize.y = vsize.x / xy;
        }
    }
    if (~((pscanvas = createwidget (-1, [
        'type'   = 'ps';
        'origin' = ['x' = 0; 'y' = 0;];
        'size'   = vsize;
        'mode'   = mode;
        'name'   = name;
    ])) >= 0)) {
        dotty.message (0, 'cannot open printer device');
        return;
    }
    for (cname in vt.colors) {
        cid = vt.colors[cname];
        if (cname == '_bgcolor_')
            setwidgetattr (pscanvas, ['color' = [0 = cid;];]);
        else if (setwidgetattr (pscanvas, ['color' = [cid = cname;];]) ~= 1) {
            t = split (cname, ' ');
            if (tablesize (t) ~= 3 | setwidgetattr (pscanvas, [
                'color' = [cid = [
                    'h' = ston (t[0]); 's' = ston (t[1]); 'v' = ston (t[2]);
                ];];
            ]) ~= 1) {
                dotty.message (
                    0, concat ('unknown color ', cname, ' using #1')
                );
            }
        }
    }
    setwidgetattr (pscanvas, ['window' = wrect;]);
    graph = copy (gt.graph);
    canvas = vt.canvas;
    vt.canvas = pscanvas;
    edgehandles = gt.edgehandles;
    gt.edgehandles = 0;
    fontmap = dotty.maps[getenv ('LEFTYWINSYS')].psfontmap;
    for (eid in graph.edges) {
        edge = graph.edges[eid];
        edge.fontname = fontmap[edge.attr.fontname];
        for (did in edge.draws) {
            if (did == 'ep')
                continue;
            draw = edge.draws[did];
            for (i = 0; draw[i]; i = i + 1)
                if (draw[i].type == 'F')
                    draw[i].fn = fontmap[draw[i].ofn];
        }
        gt.drawedge (gt, [0 = vt;], edge);
    }
    for (nid in graph.nodes) {
        node = graph.nodes[nid];
        node.fontname = fontmap[node.attr.fontname];
        for (did in node.draws) {
            if (did == 'ep')
                continue;
            draw = node.draws[did];
            for (i = 0; draw[i]; i = i + 1)
                if (draw[i].type == 'F')
                    draw[i].fn = fontmap[draw[i].ofn];
        }
        gt.drawnode (gt, [0 = vt;], node);
    }
    for (gid in graph.graphs) {
        sgraph = graph.graphs[gid];
        sgraph.fontname = fontmap[sgraph.graphattr.fontname];
        for (did in sgraph.draws) {
            if (did == 'ep')
                continue;
            draw = sgraph.draws[did];
            for (i = 0; draw[i]; i = i + 1)
                if (draw[i].type == 'F')
                    draw[i].fn = fontmap[draw[i].ofn];
        }
        gt.drawsgraph (gt, [0 = vt;], sgraph);
    }
    graph.fontname = fontmap[graph.graphattr.fontname];
    gt.drawsgraph (gt, [0 = vt;], graph);
    gt.edgehandles = edgehandles;
    vt.canvas = canvas;
    destroywidget (pscanvas);
    if (otype == 'printer' & getenv ('LEFTYWINSYS') ~= 'mswin')
        system (concat (pr, ' ', name, '; rm ',name));
};

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