winio.c

这是我写的一个仿照linux下编辑器vim写的一个简单的全屏文本编辑器

#include <stdio.h>
#include <curses.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>

#include "zped.h"
#include "myExternal.h"

void update_line(int editLineNum,Rnode * updateNow)
{
	long sum = 0;
    	long temp = 0;
    	long begin = 0;
    	long space = 0;
    	int count = 0;
    	int cursor_x = 0;
    	int i;
    	int n;
    	Cnode * p;
    
    	if(current_R == updateNow) {
		if(current_x <= COLS-3) {
			for(p = current_R->rowHead;sum <= COLS - 3 && p != 0; p = p->next) {
				mvwaddch(edit,editLineNum,sum,p->ch);
				sum++;
			}
			if(sum == COLS - 2) {
				mvwaddch(edit,editLineNum,sum++,'\\');
			}
			space = sum;
			while(space <= COLS - 2)
				mvwaddch(edit,editLineNum,space++,' ');
			cursor_x = whereisX();
			wmove(edit,editLineNum,cursor_x);
		} else {
	    		for(n = 1; current_x - (COLS-3)-n*((COLS-4)-3) > 0; n++) ;
	    		begin = (COLS-3)+(n-1)*((COLS-4)-3)-4;
	    		p = current_R->rowHead;
	    		while(temp < begin && p!= 0) {
	    			p = p->next;
	    			temp++;
			}
			mvwaddch(edit,editLineNum,0,'\\');
			for(sum = 1; sum < COLS - 3 && p != 0; p = p->next,sum++) {
				mvwaddch(edit,editLineNum,sum,p->ch);
			}
	    		if(sum == COLS - 3) {
				mvwaddch(edit,editLineNum,sum++,'\\');
	    		}
	    		space = sum;
	    		while(space <= COLS - 3)
				mvwaddch(edit,editLineNum,space++,' ');
	    		cursor_x = whereisX();
	    		wmove(edit,editLineNum,cursor_x);
		}
	} else {
		for(p = updateNow->rowHead;sum <= COLS - 3 && p != 0; p = p->next) {
			mvwaddch(edit,editLineNum,sum,p->ch);
			sum++;
		}

		if(sum == COLS - 2) {
			mvwaddch(edit,editLineNum,sum++,'\\');
		}
		space = sum;
		while(space <= COLS - 2) 
			mvwaddch(edit,editLineNum,space++,' ');
		cursor_x = whereisX();
		wmove(edit,editLineNum,cursor_x);
	}
}


void update_select_line(int editLineNum,Rnode * updateNow)
{
	long sum = 0;
    	long temp = 0;
    	long begin = 0;
    	long space = 0;
    	int count = 0;
    	int cursor_x = 0;
    	int i;
    	int n;
    	Cnode * p;
    
    	if(current_R == updateNow) {
		if(current_x <= COLS-3) {
			for(p = current_R->rowHead;sum <= COLS - 3 && p != 0; p = p->next) {
				if(p == startPoint && startPoint != endPoint)
				    wattron(edit,A_REVERSE);
				else if(p == endPoint)
				    wattroff(edit,A_REVERSE);
				mvwaddch(edit,editLineNum,sum,p->ch);
				sum++;
			}
			wattroff(edit,A_REVERSE);	
			if(sum == COLS - 2) {
				mvwaddch(edit,editLineNum,sum++,'\\');
			}
			space = sum;
			while(space <= COLS - 2)
				mvwaddch(edit,editLineNum,space++,' ');
			cursor_x = whereisX();
			//wmove(edit,editLineNum,cursor_x);
		} else {
	    		for(n = 1; current_x - (COLS-3)-n*((COLS-4)-3) > 0; n++) ;
	    		begin = (COLS-3)+(n-1)*((COLS-4)-3)-4;
	    		p = current_R->rowHead;
	    		while(temp < begin && p!= 0) {
	    			p = p->next;
	    			temp++;
			}
			mvwaddch(edit,editLineNum,0,'\\');

		    	wattron(edit,A_REVERSE);
			for(sum = 1; sum < COLS - 3 && p != 0; p = p->next,sum++) {
				if(p == endPoint)
				    wattroff(edit,A_REVERSE);
				mvwaddch(edit,editLineNum,sum,p->ch);
			}
			wattroff(edit,A_REVERSE);
	    		if(sum == COLS - 3) {
				mvwaddch(edit,editLineNum,sum++,'\\');
	    		}
	    		space = sum;
	    		while(space <= COLS - 3)
				mvwaddch(edit,editLineNum,space++,' ');
	    		cursor_x = whereisX();
	    		//wmove(edit,editLineNum,cursor_x);
		}
	} else {

		for(p = updateNow->rowHead;sum <= COLS - 3 && p != 0; p = p->next) {
			if(p == startPoint && startPoint != endPoint)
			    wattron(edit,A_REVERSE);
			if(p == endPoint)
			    wattroff(edit,A_REVERSE);
			if(p->ch == '\n'&& updateNow->rowHead == p) 
				mvwaddch(edit,editLineNum,sum,' ');
			else 
				mvwaddch(edit,editLineNum,sum,p->ch);
			sum++;
		}
		wattroff(edit,A_REVERSE);

		if(sum == COLS - 2) {
			mvwaddch(edit,editLineNum,sum++,'\\');
		}
		space = sum;
		while(space <= COLS - 2) 
			mvwaddch(edit,editLineNum,space++,' ');
		cursor_x = whereisX();
		//wmove(edit,editLineNum,cursor_x);
	}
	cursor_x = whereisX();
	wmove(edit,cursor_y,cursor_x);
}

void edit_refresh()
{
	long int cursor_x;
    	Rnode * tempR = editTop;
    	int i = 0;
	int j = 0;
    	while(tempR != 0 && i < LINES - 2) {
		update_line(i,tempR);
		tempR = tempR->next;
		i++;
    	}
	if(i < LINES - 2) {
		while(i < LINES - 2) {
			j = 0;
			while(j < COLS - 2) {
				mvwaddch(edit,i,j,' ');
				j++;
			}
			i++;
		}
	}
	cursor_x = whereisX();
	wmove(edit,cursor_y,cursor_x);
	wrefresh(edit);
}





bool midwinBarUpdate(char * pathName)
{
	int percent = current_y * 100 / totalLine;
	int i = 0;
	wclear(midwin);
	if(COLS < 15)
		return 0;
	wattron(midwin,A_REVERSE);
	for(i = 0; i < COLS-1; i++) 
	    mvwaddch(midwin,0,i,' '); 
	if(change)
		mvwprintw(midwin,0,1,"%s [+]",pathName);
	else
		mvwprintw(midwin,0,1,"%s",pathName);
	mvwprintw(midwin,0,COLS-14,"R:%ld C:%ld %d%%",current_y+1,current_x+1,percent);
	wattroff(midwin,A_REVERSE);
	wrefresh(midwin);
	wrefresh(edit);
	return 1;
}




bool selectUpdate()
{
    Rnode * Rtemp;
    int count = 0;
    long cursor_x = whereisX();
    bool flag = false;/*if the editTop is abovt the startLine flag = true else flag = false.*/
    Rtemp = fileTop;
    while(Rtemp != editTop && Rtemp != startLine)
	Rtemp = Rtemp->next;
    if(Rtemp == editTop) {
	flag = true;
	while(Rtemp != startLine) {
	    count++;
	    Rtemp = Rtemp->next;
	}
    } else if(Rtemp == startLine) {
	flag = false;
	count = 0;
	Rtemp = editTop;
    }
    if(flag) {
	if(startLine == endLine) {
	    update_select_line(count,startLine);
	} else if(startLine == endLine->pre) {
	    update_select_line(count++,startLine);
	    wattron(edit,A_REVERSE);
	    update_select_line(count,endLine);
	} else {
	    update_select_line(count++,startLine);
	    Rtemp = startLine->next;
	    wattron(edit,A_REVERSE);
	    while(Rtemp != endLine->next) {
		wattron(edit,A_REVERSE);
		update_select_line(count++,Rtemp);
		Rtemp = Rtemp->next;
	    }
	    wattroff(edit,A_REVERSE);
	}
    } else {
	wattron(edit,A_REVERSE);
	while(Rtemp != endLine->next) {
	    wattron(edit,A_REVERSE);
	    update_select_line(count++,Rtemp);
	    Rtemp = Rtemp->next;
	}
	wattroff(edit,A_REVERSE);
    }
    if(current_x < 0) {
	    mvwaddch(edit,4,4,'o');
	    sleep(2);
	    wrefresh(edit);
    }
    return 1;
}