4 * (c) 2018 Martin Mares <mj@ucw.cz>
16 class null_cmd : public cmd_exec {
18 null_cmd(cmd *c UNUSED) { }
19 vector<page *> process(vector<page *> &pages) override { return pages; }
22 static const arg_def no_args[] = {
26 /*** Generic routines ***/
30 class xform_page : public page {
34 void render(out_context *out, pdf_matrix xform) override;
35 xform_page(page *p, pdf_matrix xf);
38 xform_page::xform_page(page *p, pdf_matrix xf)
44 BBox media(p->width, p->height);
46 width = media.width();
47 height = media.height();
49 image_box = p->image_box;
50 image_box.transform(xf);
53 void xform_page::render(out_context *out, pdf_matrix parent_xform)
55 orig_page->render(out, xform * parent_xform);
58 // Commands acting on individual pages
60 class cmd_exec_simple : public cmd_exec {
61 virtual page *process_page(page *p) = 0;
62 vector<page *> process(vector<page *> &pages) override;
65 vector<page *> cmd_exec_simple::process(vector<page *> &pages)
69 out.push_back(process_page(p));
73 // Paper specifications
78 paper_spec(cmd *c, bool maybe=true)
80 arg_val *aname = c->arg("paper");
81 arg_val *aw = c->arg("w");
82 arg_val *ah = c->arg("h");
83 if (!aname->given() && !aw->given() && !ah->given() && maybe)
88 if (aw->given() != ah->given() || aname->given() == aw->given())
89 die("Either paper format name or width and height must be given");
92 const char *name = aname->as_string("").c_str();
93 const paper *pap = paperinfo(name);
95 die("No paper called %s is known", name);
96 w = paperpswidth(pap);
97 h = paperpsheight(pap);
101 w = aw->as_double(0);
102 h = ah->as_double(0);
108 { "paper", AT_STRING | AT_POSITIONAL }, \
112 // Position specification
117 pos_spec() { v = h = 0; }
121 die("Value of pos must have two characters");
124 else if (s[0] == 'c')
126 else if (s[0] == 'b')
129 die("First character of pos must be t/c/b");
132 else if (s[1] == 'c')
134 else if (s[1] == 'r')
137 die("Second character of pos must be l/c/r");
139 pos_spec(cmd *c) : pos_spec(c->arg("pos")->as_string("cc")) { }
140 pdf_matrix place(BBox &inner, BBox &outer)
143 m.shift(-inner.x_min, -inner.y_min);
149 m.shift((outer.width() - inner.width()) / 2, 0);
152 m.shift(outer.width() - inner.width(), 0);
162 m.shift(0, (outer.height() - inner.height()) / 2);
165 m.shift(0, outer.height() - inner.height());
170 m.shift(outer.x_min, outer.y_min);
183 margin_spec(cmd *c, string basic, string sx)
186 m = c->arg(basic)->as_double(0);
187 h = c->arg("h" + sx)->as_double(m);
188 v = c->arg("v" + sx)->as_double(m);
189 l = c->arg("l" + sx)->as_double(h);
190 r = c->arg("r" + sx)->as_double(h);
191 t = c->arg("t" + sx)->as_double(v);
192 b = c->arg("b" + sx)->as_double(v);
194 bool may_shrink(BBox *bb)
196 return (bb->width() > l+r && bb->height() > t+b);
198 void shrink_box(BBox *bb)
204 if (bb->x_min >= bb->x_max || bb->y_min >= bb->y_max)
205 die("Margins cannot be larger than the whole page");
207 void expand_box(BBox *bb)
216 #define MARGIN_ARGS1_NAMED(name) \
219 #define MARGIN_ARGS1_POSNL(name) \
220 { name, AT_DIMEN | AT_POSITIONAL }
222 #define MARGIN_ARGS2(sx) \
223 { "h" sx, AT_DIMEN }, \
224 { "v" sx, AT_DIMEN }, \
225 { "l" sx, AT_DIMEN }, \
226 { "r" sx, AT_DIMEN }, \
227 { "t" sx, AT_DIMEN }, \
238 die("Invalid color specification \"%s\": expecting 6 hex digits", s.c_str());
239 for (int i=0; i<3; i++)
242 for (int j=0; j<2; j++)
245 if (c >= '0' && c <= '9')
246 x = (x << 4) | (c - '0');
247 else if (c >= 'a' && c <= 'f')
248 x = (x << 4) | (c - 'a' + 10);
249 else if (c >= 'A' && c <= 'F')
250 x = (x << 4) | (c - 'A' + 10);
257 return pdf_coord(rgb[0]) + " " + pdf_coord(rgb[1]) + " " + pdf_coord(rgb[2]);
263 class cropmark_spec {
275 string crop_cross(double x, double y, uint mask);
276 QPDFObjectHandle egstate;
279 cropmark_spec(cmd *c, const string prefix="", const string def_type="cross") : color(c->arg(prefix + "color")->as_string("000000"))
281 string t = c->arg(prefix + "mark")->as_string(def_type);
286 else if (t == "cross")
295 die("Invalid cropmark type %s", t.c_str());
297 pen_width = c->arg(prefix + "pen")->as_double(0.2);
298 arm_length = c->arg(prefix + "len")->as_double(5*mm);
299 offset = c->arg(prefix + "offset")->as_double(0);
300 egstate = QPDFObjectHandle::newNull();
302 bool is_bg() { return (type == MARK_BG); }
303 string pdf_stream(out_context *out, BBox &box, pdf_matrix &xform);
306 string cropmark_spec::crop_cross(double x, double y, uint mask)
310 for (uint i=0; i<4; i++)
311 if (mask & (1U << i))
313 double x2 = x, y2 = y;
316 case 3: x2 -= arm_length; break;
317 case 2: x2 += arm_length; break;
318 case 1: y2 += arm_length; break;
319 case 0: y2 -= arm_length; break;
321 s += pdf_coord(x) + " " + pdf_coord(y) + " m " + pdf_coord(x2) + " " + pdf_coord(y2) + " l S ";
327 string cropmark_spec::pdf_stream(out_context *out, BBox &box, pdf_matrix &xform)
329 if (type == MARK_NONE)
333 s += color.to_string() + (type == MARK_BG ? " rg " : " RG ");
334 s += xform.to_string() + " cm ";
336 if (egstate.isNull())
338 auto egs = QPDFObjectHandle::newDictionary();
339 egs.replaceKey("/Type", QPDFObjectHandle::newName("/ExtGState"));
340 egs.replaceKey("/LW", QPDFObjectHandle::newReal(pen_width, 1));
341 egs.replaceKey("/LC", QPDFObjectHandle::newInteger(2));
342 egs.replaceKey("/LJ", QPDFObjectHandle::newInteger(0));
343 egstate = out->pdf->makeIndirectObject(egs);
346 string egs_res = out->new_resource("GS");
347 out->egstates.replaceKey(egs_res, egstate);
348 s += egs_res + " gs ";
361 s += b.to_rect() + " re S ";
364 s += crop_cross(b.x_min, b.y_min, 0b1111);
365 s += crop_cross(b.x_max, b.y_min, 0b1111);
366 s += crop_cross(b.x_max, b.y_max, 0b1111);
367 s += crop_cross(b.x_min, b.y_max, 0b1111);
370 s += crop_cross(b.x_min, b.y_min, 0b0110);
371 s += crop_cross(b.x_max, b.y_min, 0b1010);
372 s += crop_cross(b.x_max, b.y_max, 0b1001);
373 s += crop_cross(b.x_min, b.y_max, 0b0101);
376 s += crop_cross(b.x_min, b.y_min, 0b1001);
377 s += crop_cross(b.x_max, b.y_min, 0b0101);
378 s += crop_cross(b.x_max, b.y_max, 0b0110);
379 s += crop_cross(b.x_min, b.y_max, 0b1010);
382 s += b.to_rect() + " re f ";
390 #define CROPMARK_ARGS(px) \
391 { px "mark", AT_STRING }, \
392 { px "pen", AT_DIMEN }, \
393 { px "len", AT_DIMEN }, \
394 { px "offset",AT_DIMEN }, \
395 { px "color", AT_STRING }
397 // Scaling preserving aspect ratio
399 double scale_to_fit(BBox &from, BBox &to)
401 double fw = from.width(), fh = from.height();
402 double tw = to.width(), th = to.height();
403 if (is_zero(fw) || is_zero(fh) || is_zero(tw) || is_zero(th))
406 return min(tw/fw, th/fh);
411 class move_cmd : public cmd_exec_simple {
416 x = c->arg("x")->as_double(0);
417 y = c->arg("y")->as_double(0);
419 page *process_page(page *p) override
423 return new xform_page(p, m);
427 static const arg_def move_args[] = {
428 { "x", AT_DIMEN | AT_MANDATORY | AT_POSITIONAL },
429 { "y", AT_DIMEN | AT_MANDATORY | AT_POSITIONAL },
435 class scale_cmd : public cmd_exec_simple {
436 double x_factor, y_factor;
440 x_factor = c->arg("x")->as_double(1);
441 y_factor = c->arg("y")->as_double(x_factor);
443 page *process_page(page *p) override
446 m.scale(x_factor, y_factor);
447 return new xform_page(p, m);
451 static const arg_def scale_args[] = {
452 { "x", AT_DOUBLE | AT_MANDATORY | AT_POSITIONAL },
453 { "y", AT_DOUBLE | AT_POSITIONAL },
459 class rotate_cmd : public cmd_exec_simple {
464 deg = c->arg("deg")->as_int(0) % 360;
468 die("Rotate requires a multiple of 90 degrees");
470 page *process_page(page *p) override
479 m.shift(0, p->width);
483 m.shift(p->width, p->height);
487 m.shift(p->height, 0);
492 return new xform_page(p, m);
496 static const arg_def rotate_args[] = {
497 { "angle", AT_INT | AT_MANDATORY | AT_POSITIONAL },
503 class flip_cmd : public cmd_exec_simple {
509 horizontal = c->arg("h")->as_int(0);
510 vertical = c->arg("v")->as_int(0);
511 if (!horizontal && !vertical)
512 die("Flip has no direction specified");
514 page *process_page(page *p) override
520 m.shift(0, p->height);
525 m.shift(p->width, 0);
527 return new xform_page(p, m);
531 static const arg_def flip_args[] = {
539 class select_cmd : public cmd_exec {
546 vector<page *> process(vector<page *> &pages) override;
549 static int validate_page_index(vector<page *> &pages, int idx)
551 if (idx >= 1 && idx <= (int) pages.size())
553 if (idx <= -1 && idx >= (int) -pages.size())
554 return idx + pages.size();
555 die("Page index %d out of range", idx);
558 vector<page *> select_cmd::process(vector<page *> &pages)
561 for (auto pb: pipe->branches)
563 vector<page *> selected;
564 for (auto ps: pb->selectors)
566 int f = validate_page_index(pages, ps.from);
567 int t = validate_page_index(pages, ps.to);
568 int step = (f <= t) ? 1 : -1;
569 for (int i=f; f<=t; f += step)
570 selected.push_back(pages[i]);
572 auto processed = run_command_list(pb->commands, selected);
573 for (auto p: processed)
581 class apply_cmd : public cmd_exec {
588 vector<page *> process(vector<page *> &pages) override;
591 static pipeline_branch *find_branch(pipeline *pipe, vector <page *> &pages, int idx)
593 for (auto pb: pipe->branches)
594 for (auto ps: pb->selectors)
596 int f = validate_page_index(pages, ps.from);
597 int t = validate_page_index(pages, ps.to);
598 if (f <= idx && idx <= t || t <= idx && idx <= f)
604 vector<page *> apply_cmd::process(vector<page *> &pages)
611 pipeline_branch *pb = find_branch(pipe, pages, cnt);
616 auto processed = run_command_list(pb->commands, tmp);
617 for (auto q: processed)
630 class modulo_cmd : public cmd_exec {
637 n = c->arg("n")->as_int(0);
639 die("Modulo must have n > 0");
640 half = c->arg("half")->as_int(0);
643 vector<page *> process(vector<page *> &pages) override;
646 vector<page *> modulo_cmd::process(vector<page *> &pages)
649 int tuples = ((int) pages.size() + n - 1) / n;
650 int use_tuples = half ? tuples/2 : tuples;
652 for (int tuple=0; tuple < use_tuples; tuple++)
654 debug("# Tuple %d", tuple);
656 for (auto pb: pipe->branches)
659 for (auto ps: pb->selectors)
663 int step = (f <= t) ? 1 : -1;
664 for (int i=f; i<=t; i += step)
669 else if (i < 0 && i >= -n)
670 j = (tuples-1-tuple)*n + (-i) - 1;
672 die("Modulo: invalid index %d", i);
673 if (j < (int) pages.size())
674 tmp.push_back(pages[j]);
677 page *ref_page = pages[tuple*n];
678 tmp.push_back(new empty_page(ref_page->width, ref_page->height));
682 auto processed = run_command_list(pb->commands, tmp);
683 for (auto q: processed)
692 static const arg_def modulo_args[] = {
693 { "n", AT_INT | AT_MANDATORY | AT_POSITIONAL },
694 { "half", AT_SWITCH },
700 class draw_bbox_page : public page {
703 void render(out_context *out, pdf_matrix xform) override;
704 draw_bbox_page(page *p) : page(p) { orig_page = p; }
707 class draw_bbox_cmd : public cmd_exec_simple {
709 draw_bbox_cmd(cmd *c UNUSED) { }
710 page *process_page(page *p) override
712 return new draw_bbox_page(p);
716 void draw_bbox_page::render(out_context *out, pdf_matrix xform)
718 orig_page->render(out, xform);
721 xform.to_string() + " cm " +
723 image_box.to_rect() + " re S " +
729 class merge_cmd : public cmd_exec {
731 merge_cmd(cmd *c UNUSED) { }
732 vector<page *> process(vector<page *> &pages) override;
735 class merge_page : public page {
736 vector<page *> orig_pages;
738 merge_page(vector<page *> &orig) : page(0, 0)
748 image_box = p->image_box;
753 if (!is_equal(width, p->width) || !is_equal(height, p->height))
754 die("All pages participating in a merge must have the same dimensions");
755 image_box.join(p->image_box);
759 void render(out_context *out, pdf_matrix xform) override
761 for (auto p: orig_pages)
762 p->render(out, xform);
766 vector<page *> merge_cmd::process(vector<page *> &pages)
770 out.push_back(new merge_page(pages));
776 class paper_cmd : public cmd_exec_simple {
780 paper_cmd(cmd *c) : paper(c), pos(c) { }
781 page *process_page(page *p) override
783 BBox paper_box = BBox(paper.w, paper.h);
784 pdf_matrix xf = pos.place(p->image_box, paper_box);
785 page *q = new xform_page(p, xf);
792 static const arg_def paper_args[] = {
800 class scaleto_cmd : public cmd_exec_simple {
804 scaleto_cmd(cmd *c) : paper(c), pos(c) { }
805 page *process_page(page *p) override
807 BBox orig_box = BBox(p->width, p->height);
808 BBox paper_box = BBox(paper.w, paper.h);
810 xf.scale(scale_to_fit(orig_box, paper_box));
811 orig_box.transform(xf);
812 xf.concat(pos.place(orig_box, paper_box));
813 page *q = new xform_page(p, xf);
820 static const arg_def scaleto_args[] = {
828 class fit_cmd : public cmd_exec_simple {
833 fit_cmd(cmd *c) : paper(c, true), pos(c), marg(c, "margin", "margin") { }
834 page *process_page(page *p) override
839 if (!is_zero(paper.w) && !is_zero(paper.h))
841 // Paper given: scale image to fit paper
842 BBox orig_box = p->image_box;
843 BBox paper_box = BBox(paper.w, paper.h);
844 marg.shrink_box(&paper_box);
845 xf.scale(scale_to_fit(orig_box, paper_box));
846 orig_box.transform(xf);
847 xf.concat(pos.place(orig_box, paper_box));
848 q = new xform_page(p, xf);
854 // No paper given: adjust paper to fit image
855 xf.shift(-p->image_box.x_min, -p->image_box.y_min);
856 xf.shift(marg.l, marg.b);
857 q = new xform_page(p, xf);
858 q->width = p->image_box.width() + marg.l + marg.r;
859 q->height = p->image_box.height() + marg.t + marg.b;
865 static const arg_def fit_args[] = {
868 MARGIN_ARGS1_NAMED("margin"),
869 MARGIN_ARGS2("margin"),
875 class expand_cmd : public cmd_exec_simple {
878 expand_cmd(cmd *c) : marg(c, "by", "") { }
879 page *process_page(page *p) override
882 xf.shift(marg.l, marg.b);
883 page *q = new xform_page(p, xf);
884 q->width = p->width + marg.l + marg.r;
885 q->height = p->height + marg.t + marg.b;
886 if (q->width < 0.001 || q->height < 0.001)
887 die("Expansion must result in positive page dimensions");
892 static const arg_def expand_args[] = {
893 MARGIN_ARGS1_POSNL("by"),
900 class margins_cmd : public cmd_exec_simple {
903 margins_cmd(cmd *c) : marg(c, "size", "") { }
904 page *process_page(page *p) override
907 xf.shift(-p->image_box.x_min, -p->image_box.y_min);
908 xf.shift(marg.l, marg.b);
909 page *q = new xform_page(p, xf);
910 q->width = p->image_box.width() + marg.l + marg.r;
911 q->height = p->image_box.height() + marg.t + marg.b;
912 if (q->width < 0.001 || q->height < 0.001)
913 die("Margins must result in positive page dimensions");
918 static const arg_def margins_args[] = {
919 MARGIN_ARGS1_POSNL("size"),
926 class add_blank_cmd : public cmd_exec {
930 add_blank_cmd(cmd *c) : paper(c, true)
932 n = c->arg("n")->as_int(1);
934 vector<page *> process(vector<page *> &pages) override;
937 vector<page *> add_blank_cmd::process(vector<page *> &pages)
944 for (int i=0; i<n; i++)
946 double w = paper.w, h = paper.h;
947 if (is_zero(w) || is_zero(h))
948 w = p->width, h = p->height;
949 out.push_back(new empty_page(w, h));
956 static const arg_def add_blank_args[] = {
957 { "n", AT_INT | AT_POSITIONAL },
964 class book_cmd : public cmd_exec {
969 n = c->arg("n")->as_int(0);
971 die("Number of pages per signature must be divisible by 4");
973 vector<page *> process(vector<page *> &pages) override;
976 vector<page *> book_cmd::process(vector<page *> &pages)
978 vector<page *> in, out;
981 while (in.size() % 4)
982 in.push_back(new empty_page(in[0]->width, in[0]->height));
985 while (i < (int) in.size())
987 int sig = in.size() - i;
990 for (int j=0; j<sig/2; j+=2)
992 out.push_back(in[i + sig-1-j]);
993 out.push_back(in[i + j]);
994 out.push_back(in[i + j+1]);
995 out.push_back(in[i + sig-2-j]);
1003 static const arg_def book_args[] = {
1004 { "n", AT_INT | AT_POSITIONAL },
1012 double tile_w, tile_h;
1013 double paper_w, paper_h;
1018 class nup_cmd : public cmd_exec {
1020 int grid_n, grid_m, num_tiles;
1034 double hspace, vspace;
1035 cropmark_spec cmarks;
1038 page *process_single(vector<page *> &in);
1039 void find_config(vector<page *> &in, BBox *page_boxes);
1040 void try_config(nup_state &st);
1042 bool found_solution;
1043 BBox common_page_box;
1046 nup_cmd(cmd *c) : paper(c), marg(c, "margin", "margin"), pos(c), tpos(c->arg("tpos")->as_string("tl")), cmarks(c, "c", "none")
1048 grid_n = c->arg("n")->as_int(0);
1049 grid_m = c->arg("m")->as_int(0);
1050 if (grid_n > 0 && grid_m > 0)
1051 num_tiles = grid_n * grid_m;
1052 else if (grid_n > 0 && !grid_m)
1055 die("Grid size must be at least 1x1");
1057 const string by = c->arg("by")->as_string("rows");
1058 if (by == "rows" || by == "row" || by == "r")
1060 else if (by == "cols" || by == "cols" || by == "c")
1062 else if (by == "tile" || by == "t")
1065 die("Parameter \"by\" must be rows/cols/tile");
1067 crop = c->arg("crop")->as_int(0);
1068 mixed = c->arg("mixed")->as_int(0);
1069 rotate = c->arg("rotate")->as_int(-1);
1070 scale = c->arg("scale")->as_double(0);
1072 double space = c->arg("space")->as_double(0);
1073 hspace = c->arg("hspace")->as_double(space);
1074 vspace = c->arg("vspace")->as_double(space);
1076 if (!is_zero(scale) && (!is_zero(paper.w) || rotate >= 0))
1077 die("When nup is used with explicit scaling, paper size nor rotation may be given");
1078 if (!is_zero(scale) && !grid_m)
1079 die("When nup is used with explicit scaling, both grid sizes must be given");
1082 vector<page *> process(vector<page *> &pages) override;
1085 vector<page *> nup_cmd::process(vector<page *> &pages)
1089 // Unless mixed is given, find the common page size
1092 for (int i=0; i < (int) pages.size(); i++)
1095 BBox pb = crop ? p->image_box : BBox(p->width, p->height);
1097 common_page_box = pb;
1099 common_page_box.join(pb);
1101 debug("NUP: Common page box [%.3f %.3f]-[%.3f %.3f]",
1102 common_page_box.x_min, common_page_box.y_min, common_page_box.x_max, common_page_box.y_max);
1105 // Process one tile set after another
1107 while (i < (int) pages.size())
1110 if (fill_by == BY_TILE)
1112 for (int j=0; j<num_tiles; j++)
1113 in.push_back(pages[i]);
1118 for (int j=0; j<num_tiles; j++)
1120 if (i < (int) pages.size())
1121 in.push_back(pages[i]);
1123 in.push_back(new empty_page(in[0]->width, in[0]->height));
1127 out.push_back(process_single(in));
1133 void nup_cmd::try_config(nup_state &st)
1135 BBox window(st.paper_w, st.paper_h);
1136 if (!marg.may_shrink(&window))
1138 marg.shrink_box(&window);
1139 window.x_max -= (st.cols - 1) * hspace;
1140 window.y_max -= (st.rows - 1) * vspace;
1141 if (window.width() < 0 || window.height() < 0)
1144 BBox image(st.cols * st.tile_w, st.rows * st.tile_h);
1145 st.scale = scale_to_fit(image, window);
1146 st.fill_factor = (st.scale*image.width() * st.scale*image.height()) / (st.paper_w * st.paper_h);
1148 debug("Try: %dx%d on %.3f x %.3f => scale %.3f, fill %.6f",
1150 st.paper_w, st.paper_h,
1151 st.scale, st.fill_factor);
1153 if (!found_solution || best.fill_factor < st.fill_factor)
1155 found_solution = true;
1160 void nup_cmd::find_config(vector<page *> &in, BBox *page_boxes)
1164 // Determine tile size
1165 st.tile_w = st.tile_h = 0;
1166 for (int i=0; i<num_tiles; i++)
1169 page_boxes[i] = common_page_box;
1171 page_boxes[i] = in[i]->image_box;
1173 page_boxes[i] = BBox(in[i]->width, in[i]->height);
1174 st.tile_w = max(st.tile_w, page_boxes[i].width());
1175 st.tile_h = max(st.tile_h, page_boxes[i].height());
1177 debug("NUP: %d tiles of size [%.3f,%.3f]", num_tiles, st.tile_w, st.tile_h);
1180 // Try all possible configurations of tiles
1181 found_solution = false;
1182 if (!is_zero(scale))
1184 // If explicit scaling is requested, we choose page size ourselves,
1185 // so there is just one configuration.
1188 st.paper_w = marg.l + st.cols*st.tile_w + (st.cols-1)*hspace + marg.r;
1189 st.paper_h = marg.t + st.rows*st.tile_h + (st.rows-1)*vspace + marg.b;
1194 // Page size is fixed (either given or copied from the source pages),
1195 // but we can have freedom to rotate and/or to choose grid size.
1196 for (int rot=0; rot<=1; rot++)
1198 if (rotate >= 0 && rot != rotate)
1201 // Establish paper size
1202 if (!is_zero(paper.w))
1204 st.paper_w = paper.w;
1205 st.paper_h = paper.h;
1209 st.paper_w = in[0]->width;
1210 st.paper_h = in[0]->height;
1213 swap(st.paper_w, st.paper_h);
1224 for (int r=1; r<=grid_n; r++)
1228 st.cols = grid_n / r;
1235 if (!found_solution)
1236 die("Nup did not find a feasible solution");
1237 debug("Best: %dx%d on %.3f x %.3f", best.cols, best.rows, best.paper_w, best.paper_h);
1241 class nup_page : public page {
1243 vector<page *> orig_pages;
1244 vector<pdf_matrix> xforms;
1245 vector<BBox> tile_boxes;
1246 cropmark_spec *cmarks;
1247 void render(out_context *out, pdf_matrix xform) override;
1248 nup_page(nup_state &st) : page(st.paper_w, st.paper_h) { }
1251 void nup_page::render(out_context *out, pdf_matrix parent_xform)
1253 for (int i=0; i < (int) orig_pages.size(); i++)
1255 if (cmarks->is_bg())
1256 out->contents += cmarks->pdf_stream(out, tile_boxes[i], parent_xform);
1257 orig_pages[i]->render(out, xforms[i] * parent_xform);
1258 if (!cmarks->is_bg())
1259 out->contents += cmarks->pdf_stream(out, tile_boxes[i], parent_xform);
1263 page *nup_cmd::process_single(vector<page *> &in)
1265 BBox page_boxes[num_tiles];
1266 find_config(in, page_boxes);
1267 double tw = best.scale * best.tile_w;
1268 double th = best.scale * best.tile_h;
1270 // Construct transform from paper to grid of tiles
1271 BBox paper_box(best.paper_w, best.paper_h);
1272 marg.shrink_box(&paper_box);
1273 BBox grid_box(best.cols * tw + (best.cols-1) * hspace,
1274 best.rows * th + (best.rows-1) * vspace);
1275 pdf_matrix place_xform = pos.place(grid_box, paper_box);
1277 nup_page *p = new nup_page(best);
1278 p->image_box = grid_box;
1279 p->image_box.transform(place_xform);
1281 for (int i=0; i<num_tiles; i++)
1284 if (fill_by == BY_ROWS || fill_by == BY_TILE)
1296 BBox &page_box = page_boxes[i];
1297 m.shift(-page_box.x_min, -page_box.y_min);
1298 m.scale(best.scale);
1299 page_box.transform(m);
1301 double x = c * (tw + hspace);
1302 double y = (best.rows-1-r) * (th + vspace);
1303 BBox tile_box = BBox(x, y, x+tw, y+th);
1304 m.concat(tpos.place(page_box, tile_box));
1306 p->orig_pages.push_back(in[i]);
1307 p->xforms.push_back(m * place_xform);
1308 p->tile_boxes.push_back(tile_box.transformed(place_xform));
1309 p->cmarks = &cmarks;
1315 static const arg_def nup_args[] = {
1316 { "n", AT_INT | AT_POSITIONAL | AT_MANDATORY },
1317 { "m", AT_INT | AT_POSITIONAL },
1318 { "by", AT_STRING },
1319 { "crop", AT_SWITCH },
1320 { "mixed", AT_SWITCH },
1321 { "rotate", AT_SWITCH },
1322 { "scale", AT_DOUBLE },
1324 MARGIN_ARGS1_NAMED("margin"),
1325 MARGIN_ARGS2("margin"),
1328 { "tpos", AT_STRING },
1329 { "space", AT_DIMEN },
1330 { "hspace", AT_DIMEN },
1331 { "vspace", AT_DIMEN },
1337 class cropmarks_page : public page {
1341 void render(out_context *out, pdf_matrix xform) override
1343 orig_page->render(out, xform);
1344 out->contents += cm->pdf_stream(out, image_box, xform);
1346 cropmarks_page(page *p, cropmark_spec *cms) : page(p), orig_page(p), cm(cms) { }
1349 class cropmarks_cmd : public cmd_exec_simple {
1351 page *process_page(page *p) override
1353 return new cropmarks_page(p, &cm);
1357 cropmarks_cmd(cmd *c) : cm(c) { }
1360 static const arg_def cropmarks_args[] = {
1365 /*** Command table ***/
1367 template<typename T> cmd_exec *ctor(cmd *c) { return new T(c); }
1369 const cmd_def cmd_table[] = {
1370 { "null", no_args, 0, &ctor<null_cmd> },
1371 { "move", move_args, 0, &ctor<move_cmd> },
1372 { "scale", scale_args, 0, &ctor<scale_cmd> },
1373 { "rotate", rotate_args, 0, &ctor<rotate_cmd> },
1374 { "flip", flip_args, 0, &ctor<flip_cmd> },
1375 { "select", no_args, 1, &ctor<select_cmd> },
1376 { "apply", no_args, 1, &ctor<apply_cmd> },
1377 { "modulo", modulo_args, 1, &ctor<modulo_cmd> },
1378 { "draw-bbox",no_args, 0, &ctor<draw_bbox_cmd> },
1379 { "merge", no_args, 0, &ctor<merge_cmd> },
1380 { "paper", paper_args, 0, &ctor<paper_cmd> },
1381 { "scaleto", scaleto_args, 0, &ctor<scaleto_cmd> },
1382 { "fit", fit_args, 0, &ctor<fit_cmd> },
1383 { "expand", expand_args, 0, &ctor<expand_cmd> },
1384 { "margins", margins_args, 0, &ctor<margins_cmd> },
1385 { "add-blank",add_blank_args, 0, &ctor<add_blank_cmd> },
1386 { "book", book_args, 0, &ctor<book_cmd> },
1387 { "nup", nup_args, 0, &ctor<nup_cmd> },
1388 { "cropmarks",cropmarks_args, 0, &ctor<cropmarks_cmd> },
1389 { NULL, NULL, 0, NULL }