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/*
ezx81 - X11 ZX81 emulator
Copyright (C) 2003 Ian Cowburn (ianc@noddybox.demon.co.uk)
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-------------------------------------------------------------------------
Basic GUI routines
*/
static const char ident[]="$Id$";
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <ctype.h>
#include "gui.h"
#include "gfx.h"
#include "exit.h"
static const char ident_h[]=EZX81_GUI_H;
/* ---------------------------------------- MACROS
*/
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
/* Must match gfx.c
*/
#define SCR_W 320
#define SCR_H 200
/* ---------------------------------------- STATICS
*/
static Uint32 white;
static Uint32 black;
static Uint32 pale;
static Uint32 red;
/* ---------------------------------------- PRIVATE FUNCTIONS
*/
static void Init()
{
static int init=FALSE;
if (init)
return;
init=TRUE;
white=GFXRGB(255,255,255);
black=GFXRGB(0,0,0);
pale=GFXRGB(200,200,200);
red=GFXRGB(255,100,100);
}
static void *Malloc(size_t size)
{
void *p=malloc(size);
if (!p)
Exit("malloc failed for %lu bytes\n",(unsigned long)size);
return p;
}
static void Centre(const char *p, int y, Uint32 col)
{
GFXPrint((SCR_W-strlen(p)*8)/2,y,col,"%s",p);
}
/* ---------------------------------------- EXPORTED INTERFACES
*/
void GUIMessage(const char *title, const char *format,...)
{
char buff[1025];
va_list va;
char *p;
int no;
int f;
char **line;
int width;
int height;
int x,y;
Init();
va_start(va,format);
vsprintf(buff,format,va);
va_end(va);
p=buff;
no=1;
while(*p)
{
if (*p=='\n')
no++;
p++;
}
line=Malloc(sizeof *line * no);
line[0]=strtok(buff,"\n");
width=strlen(line[0]);
for(f=1;f<no;f++)
{
line[f]=strtok(NULL,"\n");
if (strlen(line[f])>width)
width=strlen(line[f]);
}
width=(width*8)+16;
height=(no+3)*10;
if (width>(SCR_W-10))
width=SCR_W-10;
if (height>(SCR_H-10))
height=SCR_H-10;
y=(SCR_H-height)/2;
x=(SCR_W-width)/2;
GFXRect(x-1,y-1,width+2,height+2,white,FALSE);
GFXRect(x,y,width,height,black,TRUE);
Centre(title,y+2,white);
GFXHLine(x+2,x+width-4,y+10,white);
for(f=0;f<no;f++)
Centre(line[f],y+5+10*(f+1),pale);
Centre("Press a key",y+height-10,red);
GFXEndFrame(FALSE);
GFXWaitKey();
free(line);
}
const char *GUIInputString(const char *prompt, const char *orig)
{
static const int y_pos=SCR_H-8;
static char buff[41];
size_t len;
int done=FALSE;
SDL_Event *e;
Init();
buff[0]=0;
strncat(buff,orig,40);
len=strlen(buff);
while(!done)
{
GFXRect(0,y_pos,SCR_W,8,black,TRUE);
GFXPrint(0,y_pos,white,"%s %s%c",prompt,buff,FONT_CURSOR);
GFXEndFrame(FALSE);
e=GFXWaitKey();
switch(e->key.keysym.sym)
{
case SDLK_RETURN:
case SDLK_KP_ENTER:
done=TRUE;
break;
case SDLK_ESCAPE:
buff[0]=0;
len=0;
break;
case SDLK_BACKSPACE:
case SDLK_DELETE:
if (len)
buff[--len]=0;
break;
default:
if (len<40 && isprint(e->key.keysym.sym))
{
buff[len++]=(char)e->key.keysym.sym;
buff[len]=0;
}
break;
}
}
return buff;
}
/* END OF FILE */
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