f_drawform.c

《unix/Linux下的Curses库开发指南》综合示例程序

#define FULLNAME_MAX_LENGTH  20
#define FIELD_MAX_NUM 50
#include <stdio.h>
#include <stdlib.h>
#include <curses.h>
#include <form.h>
#include <menu.h>
#include "f_menuhead.h"
//#define QUIT (MAX_COMMAND+10)
#define RETURNRECOVER (MAX_COMMAND+11)

F_LABELLINK* labellink=NULL;
F_FIELDLINK* fieldlink=NULL;
FORM* MainForm;
FIELD* 	f_field[FIELD_MAX_NUM];

void DrawForm();
void FreeForm();
extern WINDOW* FormWin;//表单窗口
extern MENU *SubMenu;
extern RedrawMenuWin();
extern errlog();
extern menuarray[5];

int MyFormDriver(FORM* form,int c)
{
    switch(c)
    {
	case QUIT:
	    if(form_driver(form,REQ_VALIDATION)==E_OK)
	    	return TRUE;
     	    break;
	case RETURNRECOVER:
    	    FreeForm(MainForm,f_field,labellink,fieldlink); 
	    RedrawMenuWin(menuarray);
	    ResponseToSelect(SubMenu);
    }
    return FALSE;
}

int GetFormRequest(WINDOW* formwin)
{
    int c=wgetch(formwin);
    switch(c)
    {
	case 13:
        case KEY_DOWN:  return REQ_NEXT_FIELD;// Ctrl+N
        case KEY_UP:   	return REQ_PREV_FIELD;// Ctrl+P
        case KEY_LL:   	return REQ_LAST_FIELD;
        case 0x05:   	return REQ_END_FIELD;//Ctrl+E
        case KEY_LEFT:  return REQ_LEFT_CHAR;
        case KEY_RIGHT: return REQ_RIGHT_CHAR;
        case 0x16:   	return REQ_DEL_CHAR;//Ctrl+V
        case 0x08:   	return REQ_DEL_PREV;//Ctrl+H
        case 0x19:   	return REQ_DEL_LINE;//Ctrl+Y
        case 0x07:   	return REQ_DEL_WORD;//Ctrl+G
        //case KEY_F(1):  return RETURNRECOVER;//ESC按键 
        case 0x1b:  return RETURNRECOVER;//ESC按键 
    }
    return c;
}

//根据xml_filename生成form界面
void TranEngine(char* xml_filename,WINDOW* FormWin)
{
    char* full_name;
    FILE* fp;
    int ret;
char temp[100];


    full_name=(char*)malloc(sizeof(char*)*FULLNAME_MAX_LENGTH);	
    sprintf(full_name,"./%s.xml",xml_filename);

    labellink=NULL;
    fieldlink=NULL;
	
    if((fp=fopen(full_name,"r"))==NULL)
    {
	printf("无法打开给定的文件%s\n",full_name);
	return;
    }
    /*载入标签链表*/
    ret =  LoadLabelXML( full_name, &labellink );
    if (ret){
	printf("%s","载入XML文件%s出错!\n",full_name);
	LabelFree(labellink);
	return ;
    }
    /*载入域链表*/
    ret =  LoadFieldXML( full_name, &fieldlink );
    if (ret){
	printf("%s","载入XML文件%s出错!\n",full_name);
	FieldFree(fieldlink);
	return ;
    }
    DrawForm();
}

void DrawForm()
{
    int i=0,j=0;
    int ch;
    int done=FALSE;
	
    for(i=0;i<labellink->label_num;i++)
    {
	f_field[i]=new_field(1,labellink->p_label[i].label_length,labellink->p_label[i].begin_y,labellink->p_label[i].begin_x,0,0);
	if(f_field[i])
	{
     	    set_field_buffer(f_field[i],0,labellink->p_label[i].label_text);
		field_opts_off(f_field[i],O_ACTIVE);
	}
    }
    for(i=labellink->label_num,j=0;i<labellink->label_num+fieldlink->field_num;i++,j++)
    {
	f_field[i]=new_field(1,fieldlink->p_field[j].field_length,fieldlink->p_field[j].begin_y,fieldlink->p_field[j].begin_x,0,0);	
	set_field_back(f_field[i],A_REVERSE);
	if(f_field[i])
	{
	    set_field_back(f_field[i],A_REVERSE);
	    //set_field_back(f_field[i],A_UNDERLINE);
	   set_field_buffer(f_field[i],0,fieldlink->p_field[j].field_def_value);
	    if(fieldlink->p_field[j].field_adjust==0)//左对齐
	        set_field_just(f_field[i],JUSTIFY_LEFT);
	    else if(fieldlink->p_field[j].field_adjust==1)//右对齐
	        set_field_just(f_field[i],JUSTIFY_RIGHT);
	    else if(fieldlink->p_field[j].field_adjust==2)//居中对齐
	        set_field_just(f_field[i],JUSTIFY_CENTER);

	    if(fieldlink->p_field[j].field_visible==0)
	        field_opts_off(f_field[i],O_VISIBLE);
	    else    field_opts_on(f_field[i],O_VISIBLE);

	    if(fieldlink->p_field[j].field_optional==0)//可选
	        field_opts_on(f_field[i],O_NULLOK);
	    if(fieldlink->p_field[j].field_autoexit==0)//不自动跳转
	        field_opts_off(f_field[i],O_AUTOSKIP);
	    if(fieldlink->p_field[j].field_secret==1)//正常显示
	        field_opts_off(f_field[i],O_PUBLIC);
	    if(fieldlink->p_field[j].field_enable==0)//正常显示
	        field_opts_off(f_field[i],O_ACTIVE);
	}
    }
    f_field[i]=(FIELD*)0;

    MainForm=new_form(f_field);

    box(FormWin, 0, 0);
    keypad(FormWin, TRUE);

    set_form_win(MainForm, FormWin);
    set_form_sub(MainForm, derwin(FormWin,17,COLS-4, 2,2));

    post_form(MainForm);
    refresh();
    wrefresh(FormWin);
    touchwin(FormWin);
    
    while(!done)
    {   
    	switch(form_driver(MainForm,ch=GetFormRequest(FormWin)))
    	{
      	    case E_OK:
            	break;
            case E_UNKNOWN_COMMAND:
            	done=MyFormDriver(MainForm,ch);
        	break;
      	    default:
        	break;
    	}
    }
    //FreeForm(MainForm,f_field,labellink,fieldlink); 
}
void FreeForm(FORM* MainForm, FIELD* f_field[],F_LABELLINK *labellink,F_FIELDLINK *fieldlink)
{
    int i;

    unpost_form(MainForm);
    free_form(MainForm);
    for(i=0;i<labellink->label_num;i++)
        free_field(f_field[i]);
    LabelFree(labellink);
    FieldFree(fieldlink);
    labellink=NULL;
    fieldlink=NULL;
}