1 // --------------------------------------------------------------------
2 // iperender
3 // --------------------------------------------------------------------
4 /*
5
6 This file is part of the extensible drawing editor Ipe.
7 Copyright (c) 1993-2020 Otfried Cheong
8
9 Ipe is free software; you can redistribute it and/or modify it
10 under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 As a special exception, you have permission to link Ipe with the
15 CGAL library and distribute executables, as long as you follow the
16 requirements of the Gnu General Public License in regard to all of
17 the software in the executable aside from CGAL.
18
19 Ipe is distributed in the hope that it will be useful, but WITHOUT
20 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
21 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
22 License for more details.
23
24 You should have received a copy of the GNU General Public License
25 along with Ipe; if not, you can find it at
26 "http://www.gnu.org/copyleft/gpl.html", or write to the Free
27 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28
29 */
30
31 #include "ipedoc.h"
32 #include "ipethumbs.h"
33
34 #include <cstdio>
35 #include <cstdlib>
36 #include <cstring>
37
38 using ipe::Document;
39 using ipe::Page;
40 using ipe::Thumbnail;
41
42 // --------------------------------------------------------------------
43
renderPage(Thumbnail::TargetFormat fm,const char * src,const char * dst,const char * pageSpec,const char * viewSpec,double zoom,bool transparent,bool nocrop)44 static int renderPage(Thumbnail::TargetFormat fm,
45 const char *src, const char *dst,
46 const char *pageSpec, const char *viewSpec, double zoom,
47 bool transparent, bool nocrop)
48 {
49 Document *doc = Document::loadWithErrorReport(src);
50
51 if (!doc)
52 return 1;
53
54 int pageIdx = pageSpec ? doc->findPage(pageSpec) : 0;
55 if (pageIdx < 0) {
56 fprintf(stderr, "Incorrect -page specification.\n");
57 delete doc;
58 return 1;
59 }
60
61 const Page *page = doc->page(pageIdx);
62
63 int viewIdx = viewSpec ? page->findView(viewSpec) : 0;
64 if (viewIdx < 0) {
65 fprintf(stderr, "Incorrect -view specification.\n");
66 delete doc;
67 return 1;
68 }
69
70 if (doc->runLatex(src)) {
71 delete doc;
72 return 1;
73 }
74
75 Thumbnail tn(doc, 0);
76 tn.setTransparent(transparent);
77 tn.setNoCrop(nocrop);
78 if (!tn.saveRender(fm, dst, page, viewIdx, zoom))
79 fprintf(stderr, "Failure to render page.\n");
80 delete doc;
81 return 0;
82 }
83
84 // --------------------------------------------------------------------
85
usage()86 static void usage()
87 {
88 fprintf(stderr, "Usage: iperender [ -png ");
89 #ifdef CAIRO_HAS_PS_SURFACE
90 fprintf(stderr, "| -eps ");
91 #endif
92 #ifdef CAIRO_HAS_PDF_SURFACE
93 fprintf(stderr, "| -pdf ");
94 #endif
95 #ifdef CAIRO_HAS_SVG_SURFACE
96 fprintf(stderr, "| -svg ");
97 #endif
98 fprintf(stderr, "] "
99 "[ -page <page> ] [ -view <view> ] [ -resolution <dpi> ] "
100 "[ -transparent ] [ -nocrop ] "
101 "infile outfile\n"
102 "Iperender saves a single page of the Ipe document in some formats.\n"
103 " -page : page to save (default 1).\n"
104 " -view : view to save (default 1).\n"
105 " -resolution : resolution for png format (default 72.0 ppi).\n"
106 " -transparent: use transparent background in png format.\n"
107 " -nocrop : do not crop page.\n"
108 "<page> can be a page number or a page name.\n"
109 );
110 exit(1);
111 }
112
main(int argc,char * argv[])113 int main(int argc, char *argv[])
114 {
115 ipe::Platform::initLib(ipe::IPELIB_VERSION);
116
117 // ensure at least three arguments (handles -help as well :-)
118 if (argc < 4)
119 usage();
120
121 Thumbnail::TargetFormat fm = Thumbnail::EPNG;
122 if (!strcmp(argv[1], "-png"))
123 fm = Thumbnail::EPNG;
124 #ifdef CAIRO_HAS_PS_SURFACE
125 else if (!strcmp(argv[1], "-eps"))
126 fm = Thumbnail::EPS;
127 #endif
128 #ifdef CAIRO_HAS_PDF_SURFACE
129 else if (!strcmp(argv[1], "-pdf"))
130 fm = Thumbnail::EPDF;
131 #endif
132 #ifdef CAIRO_HAS_SVG_SURFACE
133 else if (!strcmp(argv[1], "-svg"))
134 fm = Thumbnail::ESVG;
135 #endif
136 else
137 usage();
138
139 const char *page = nullptr;
140 const char *view = nullptr;
141 double dpi = 72.0;
142 bool transparent = false;
143 bool nocrop = false;
144
145 int i = 2;
146 while (i < argc - 2) {
147 if (!strcmp(argv[i], "-page")) {
148 if (i + 1 == argc)
149 usage();
150 page = argv[i+1];
151 i += 2;
152 } else if (!strcmp(argv[i], "-view")) {
153 if (i + 1 == argc)
154 usage();
155 view = argv[i+1];
156 i += 2;
157 } else if (!strcmp(argv[i], "-resolution")) {
158 if (i + 1 == argc)
159 usage();
160 dpi = ipe::Lex(ipe::String(argv[i+1])).getDouble();
161 i += 2;
162 } else if (!strcmp(argv[i], "-transparent")) {
163 transparent = true;
164 ++i;
165 } else if (!strcmp(argv[i], "-nocrop")) {
166 nocrop = true;
167 ++i;
168 } else
169 usage();
170 }
171
172 // remaining arguments must be two filenames
173 const char *src = argv[i];
174 const char *dst = argv[i+1];
175
176 return renderPage(fm, src, dst, page, view, dpi / 72.0,
177 transparent, nocrop);
178 }
179
180 // --------------------------------------------------------------------
181