1 /* libwmf ("ipa/svg/device.h"): library for wmf conversion
2 Copyright (C) 2000 - various; see CREDITS, ChangeLog, and sources
3
4 The libwmf Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
8
9 The libwmf Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
13
14 You should have received a copy of the GNU Library General Public
15 License along with the libwmf Library; see the file COPYING. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
18
19
20 /* This is called by wmf_play() the *first* time the meta file is played
21 */
wmf_svg_device_open(wmfAPI * API)22 static void wmf_svg_device_open (wmfAPI* API)
23 { /* wmf_svg_t* ddata = WMF_SVG_GetData (API); */
24
25 WMF_DEBUG (API,"~~~~~~~~wmf_[svg_]device_open");
26
27
28 }
29
30 /* This is called by wmf_api_destroy()
31 */
wmf_svg_device_close(wmfAPI * API)32 static void wmf_svg_device_close (wmfAPI* API)
33 { /* wmf_svg_t* ddata = WMF_SVG_GetData (API); */
34
35 WMF_DEBUG (API,"~~~~~~~~wmf_[svg_]device_close");
36
37
38 }
39
40 /* This is called from the beginning of each play for initial page setup
41 */
wmf_svg_device_begin(wmfAPI * API)42 static void wmf_svg_device_begin (wmfAPI* API)
43 { wmf_svg_t* ddata = WMF_SVG_GetData (API);
44
45 wmfStream* out = ddata->out;
46
47 WMF_DEBUG (API,"~~~~~~~~wmf_[svg_]device_begin");
48
49 if (out == 0) return;
50
51 if ((out->reset (out->context)) && ((API->flags & WMF_OPT_IGNORE_NONFATAL) == 0))
52 { WMF_ERROR (API,"unable to reset output stream!");
53 API->err = wmf_E_DeviceError;
54 return;
55 }
56
57 if ((ddata->bbox.BR.x <= ddata->bbox.TL.x) || (ddata->bbox.BR.y <= ddata->bbox.TL.y))
58 { WMF_ERROR (API,"~~~~~~~~wmf_[svg_]device_begin: bounding box has null or negative size!");
59 API->err = wmf_E_Glitch;
60 return;
61 }
62
63 if ((ddata->width == 0) || (ddata->height == 0))
64 { ddata->width = (unsigned int) ceil (ddata->bbox.BR.x - ddata->bbox.TL.x);
65 ddata->height = (unsigned int) ceil (ddata->bbox.BR.y - ddata->bbox.TL.y);
66 }
67
68 wmf_stream_printf (API,out,"<?xml version=\"1.0\" standalone=\"no\"?>\n");
69 wmf_stream_printf (API,out,"<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 20001102//EN\"\n");
70 wmf_stream_printf (API,out,"\"http://www.w3.org/TR/2000/CR-SVG-20001102/DTD/svg-20001102.dtd\">\n");
71
72 wmf_stream_printf (API,out,"<svg width=\"%u\" height=\"%u\"\n",ddata->width,ddata->height);
73 wmf_stream_printf (API,out,"\txmlns:sodipodi=\"http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd\">\n");
74
75 if (ddata->Description)
76 { wmf_stream_printf (API,out,"<desc>%s</desc>\n",ddata->Description);
77 }
78 }
79
80 /* This is called from the end of each play for page termination
81 */
wmf_svg_device_end(wmfAPI * API)82 static void wmf_svg_device_end (wmfAPI* API)
83 { wmf_svg_t* ddata = WMF_SVG_GetData (API);
84
85 wmfStream* out = ddata->out;
86
87 WMF_DEBUG (API,"~~~~~~~~wmf_[svg_]device_end");
88
89 if (out == 0) return;
90
91 wmf_stream_printf (API,out,"</svg>\n");
92 }
93
svg_translate(wmfAPI * API,wmfD_Coord d_pt)94 static svgPoint svg_translate (wmfAPI* API,wmfD_Coord d_pt)
95 { wmf_svg_t* ddata = WMF_SVG_GetData (API);
96
97 svgPoint g_pt;
98
99 double x;
100 double y;
101
102 x = ((double) d_pt.x - (double) ddata->bbox.TL.x);
103 x /= ((double) ddata->bbox.BR.x - (double) ddata->bbox.TL.x);
104 x *= (double) ddata->width;
105
106 y = ((double) d_pt.y - (double) ddata->bbox.TL.y);
107 y /= ((double) ddata->bbox.BR.y - (double) ddata->bbox.TL.y);
108 y *= (double) ddata->height;
109
110 g_pt.x = (float) x;
111 g_pt.y = (float) y;
112
113 return (g_pt);
114 }
115
svg_width(wmfAPI * API,float wmf_width)116 static float svg_width (wmfAPI* API,float wmf_width)
117 { wmf_svg_t* ddata = WMF_SVG_GetData (API);
118
119 double width;
120
121 width = (double) wmf_width * (double) ddata->width;
122 width /= ((double) ddata->bbox.BR.x - (double) ddata->bbox.TL.x);
123
124 return ((float) width);
125 }
126
svg_height(wmfAPI * API,float wmf_height)127 static float svg_height (wmfAPI* API,float wmf_height)
128 { wmf_svg_t* ddata = WMF_SVG_GetData (API);
129
130 double height;
131
132 height = (double) wmf_height * (double) ddata->height;
133 height /= ((double) ddata->bbox.BR.y - (double) ddata->bbox.TL.y);
134
135 return ((float) height);
136 }
137