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- /*
- * Copyright 1986, 1987 Pat Joseph Monardo. All rights reserved.
- * Copying of this file is granted according to the provisions
- * specified in the file COPYING which must accompany this file.
- */
-
-
- /*
- * page.h
- */
-
- global ptr last_page_glue;
-
- #define active_height active_width
- #define cur_height active_height[1]
-
- ptr prune_page_top();
-
- global scal best_height_plus_depth;
- #define DEPLORABLE 100000
-
- ptr vert_break();
- ptr vsplit();
-
- global ptr page_tail;
- global int page_contents;
-
- #define INSERTS_ONLY 1
- #define BOX_THERE 2
-
- global ptr best_page_break;
- global scal best_size;
- global scal page_max_depth;
- global val least_page_cost;
-
- #define INSERTING 0
- #define SPLIT_UP 1
- #define broken_ptr(N) link(N + 1)
- #define broken_ins(N) info(N + 1)
- #define last_ins_ptr(N) link(N + 2)
- #define best_ins_ptr(N) info(N + 2)
- #define PAGE_INS_NODE_SIZE 4
-
- global scal page_so_far[];
-
- #define page_goal page_so_far[0]
- #define page_total page_so_far[1]
- #define page_shrink page_so_far[6]
- #define page_depth page_so_far[7]
-
- global ptr last_glue;
- global val last_penalty;
- global scal last_kern;
- global val insert_penalties;
-
- int print_totals();
-
- #define start_new_page() \
- {page_contents = EMPTY; \
- page_tail = page_head; \
- link(page_head) = NULL; \
- last_glue = MAX_HALFWORD; \
- last_penalty = 0; \
- last_kern = 0; \
- page_depth = 0; \
- page_max_depth = 0;}
-
- int freeze_page_specs();
-
- global bool output_active;
-
- int ensure_vbox();
- int box_error();
- int build_page();
- int fire_up();
-
- #define contrib_tail nest[0].tail_field
-