109 lines
2.1 KiB
C
109 lines
2.1 KiB
C
#include <TeX/node.h>
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#include <TeX/flow.h>
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#include <TeX/env.h>
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#include <stdlib.h>
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#include <string.h>
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//---
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// Primary environment: a simple flow
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//
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// This environment ignores separators and breaks and concatenates all
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// nodes in a single flow. It is the type of the outermost environment of
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// any formula.
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//---
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struct TeX_Env_Primary
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{
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struct TeX_Env env;
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struct TeX_Flow *flow;
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};
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static void primary_free(struct TeX_Env *env)
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{
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struct TeX_Env_Primary *p = (void *)env;
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TeX_flow_free(p->flow);
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}
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static void primary_add_node(struct TeX_Env *env, struct TeX_Node *node)
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{
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struct TeX_Env_Primary *p = (void *)env;
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p->flow = TeX_flow_add_node(p->flow, node);
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}
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static void primary_size(struct TeX_Env *env)
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{
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struct TeX_Env_Primary *p = (void *)env;
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TeX_flow_layout(p->flow);
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p->env.width = p->flow->width;
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p->env.height = p->flow->height;
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p->env.line = p->flow->line;
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}
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static void primary_render(struct TeX_Env *env, int x, int y, int color)
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{
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struct TeX_Env_Primary *p = (void *)env;
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TeX_flow_render(p->flow, x, y, color);
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}
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struct TeX_Env *TeX_env_primary(void)
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{
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struct TeX_Env_Primary *p = malloc(sizeof *p);
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struct TeX_Env *env = (void *)p;
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env->name = "primary";
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env->free = primary_free;
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env->add_node = primary_add_node;
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env->add_separator = NULL;
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env->add_break = NULL;
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env->size = primary_size;
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env->render = primary_render;
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p->flow = NULL;
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return env;
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}
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//---
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// Matrix environment.
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//---
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/* TODO */
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//---
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// Environment printers
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//---
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#ifdef TEX_PRINT
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#include <stdio.h>
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#include <TeX/print.h>
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/* TeX_print_env_primary(): Print a primary environment to stdout */
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void TeX_print_env_primary(struct TeX_Env *env, int indent)
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{
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struct TeX_Env_Primary *p = (void *)env;
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printf("%*s", indent, "");
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printf("{primary}\n");
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TeX_print_flow(p->flow, indent + 2);
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}
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/* TeX_print_env(): Recursively print an environment */
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void TeX_print_env(struct TeX_Env *env, int indent)
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{
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if(!strcmp(env->name, "primary"))
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{
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TeX_print_env_primary(env, indent);
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}
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else
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{
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printf("%*s{%s} (?)\n", indent, "", env->name);
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}
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}
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#endif /* TEX_PRINT */
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