www.pudn.com > dos_gui.zip > TEDIT.CPP

// 1993 (c) ALL RIGHTS RESERVED 
// AUTHOR: XuYongYong 
 
/* 	yyxtedit.cpp 
*/ 
#include "tedit.h" 
#include "applicat.h" 
/**************************************************************************/ 
tedit_class::tedit_class(int ID,char *title_hotkey, 
		int left,int top,int width,int height,char *default_text, 
		int max_len) 
	:  control_class(ID,title_hotkey,NORMAL ,TEDIT, 
			left,top,width,height,0,0,0 ) 
{ 
	title_pos_x =left ; 
	title_pos_y =top -bar_height-1 ; 
 
	text_pos_x  =left+3*LINE_WIDTH; 
	text_pos_y 	=top +( height-textheight("j") )/2-2; 
	strcpy (text,default_text); 
	max_text_len =max(max_len,strlen (text) +1); 
	max_text_show_len 	= (width -2*LINE_WIDTH ) / textwidth ("M"); 
 
	setup_control(); 
} 
 
void tedit_class::setup_control() 
{ 
	max_text_len =max(max_text_len,strlen (text) ); 
	cursor_pos =strlen (text)-1; 
  int i; 
	i = (max_text_show_len =strlen(text)+1 ) )	return FALSE;		// unchanged 
	if (cursor_pos==new_cursor_pos) return FALSE; 
	cursor_pos= new_cursor_pos; 
	if (( cursor_pos < text_begin_show )&&(cursor_pos !=-1)) { 
		text_begin_show=cursor_pos; 
		for (i=0;i= (text_begin_show+strlen(text_show)+1) ) 
	{	text_begin_show=cursor_pos-max_text_show_len+1; 
		for (i=0;i No matter at all 
	switch (key_scan_num ) { 
		case    LEFTKEY 	: 
			if (adjust_cursor (	cursor_pos -1 )) 
				draw(); 
			break; 
		case    RIGHTKEY 	: 
			if (adjust_cursor (	cursor_pos +1 )) 
				draw(); 
			break; 
		case 	HOMEKEY		: 
			if (adjust_cursor ( 0 )) 
				draw(); 
			break; 
		case 	ENDKEY		: 
			if	(adjust_cursor (	strlen (text)  )) 
				draw(); 
			break; 
		case	BSKEY		: 
			if (!strlen(text)) return TRUE; 
			if (cursor_pos >=0) { 
				if (text_begin_show>0) text_begin_show--; 
				strcpy ( text + cursor_pos , text + cursor_pos+1 ); 
				adjust_cursor ( cursor_pos -1 ); 
				draw(); 
			} 
			break; 
		case 	DELKEY		: 
			if (!strlen(text)) return TRUE; 
			if ( (cursor_pos+1) max_text_len) { 
				printf("\007"); 
				return TRUE; 
			} 
			if (is_first_press) { 
				text[0]=0; 
				text_begin_show=0; 
				adjust_cursor(-1); 
				draw(); 
				is_first_press =FALSE; 
			} 
			strcpy (temp_string,text + cursor_pos+1); 
			text[cursor_pos+1] = (key_scan_num % 256 ) ; 
			text[cursor_pos+2] = 0; 
			strcpy (text+cursor_pos+2,temp_string); 
 
			if (cursor_pos-text_begin_show +1>=max_text_show_len) 
			   text_begin_show++; 
			adjust_cursor ( cursor_pos +1 ); 
			draw(); 
			break; 
	} 
	if (is_first_press) { 
		draw(); 
		is_first_press =FALSE; 
	} 
	setcolor (BLACK); 
	draw_cursor(); 
	return TRUE; 
} 
 
int tedit_class::msg_handler	(MSG& message ) 
{ static int flag; 
	switch (message.Action){ 
		case TimerMSG: 
			if (in_menu_trap) return FALSE; 
			flag =!flag; 
			if (flag) setcolor(BLACK); 
				else setcolor(WHITE); 
			draw_cursor(); 
			return FALSE; //others also need it 
	} 
	return control_class::msg_handler	(message); 
}