3deffects.c

zgv-5.6,一个Linux系统下的图片浏览器(VGA/SVGA)

  if(num>7) num=7;
  maxlen=0;
  for(f=0;f<num;f++)
    {
    len=vgatextsize(3,ptr);
    if(len>maxlen) maxlen=len;
    fdetailstr[f]=ptr;
    ptr+=strlen(ptr)+1;
    }
  
  /* ok, we also want some room for the labels :-) */
  wide=maxlen+fdlabelwidth;
  }

wide+=40;

x1=((vga_getxdim()-wide)>>1);
y1=((vga_getydim()-high)>>1);
x2=((vga_getxdim()+wide)>>1);
y2=((vga_getydim()+high)>>1);

if(save_and_restore)
  save_area(x1,y1,x2,y2);

blank_area(x1,y1,x2,y2,idx_medium);

/* draw outer box */
drawbutton(x1,y1,x2,y2,NULL,0,light,dark,mouseblack,0);

/* finally, I've got around to doing different types of msgbox! */
switch(replytype)
  {
  /* a box with a single 'OK' button, for warnings, errors, etc. */
  case MSGBOXTYPE_OK:
    drawbutton(but1.x1=((vga_getxdim()-40)>>1),but1.y1=y2-35,
               but1.x2=((vga_getxdim()+40)>>1),but1.y2=y2-10,
               "Ok",1,light,dark,mouseblack,txt);

    setcolour(txt);
    vgadrawtext(x1+20,y1+10,3,message);
    set_max_text_width(NO_CLIP_FONT);

    do
      {
      key=mousecur_wait_for_keys_or_mouse(ttyfd);
      if(has_mouse && is_end_click_left())
        {
        int mx=mouse_getx(),my=mouse_gety();
        if(mx>=but1.x1 && mx<=but1.x2 && my>=but1.y1 && my<=but1.y2)
          key=RK_ENTER;
        }
      }
    while(key!=RK_ESC && key!=RK_ENTER);
    
    retval=1;
    break;

  /* a special case for the file-details dialog. Already have 7
   * strings parsed from message. The layout is based on xzgv's.
   */
  case MSGBOXTYPE_FILEDETAILS:
    {
    static char *desc1="Details from OS";
    static char *desc2="Details from thumbnail";
    static char *desc2_pic="Details from picture";
    int group1_x,group1_y;
    int group2_x,group2_y;
    int f,y,len;
    int dim_from_pic=(fdetailstr[6][0]=='p');
    int got_dim=(fdetailstr[6][1]!='0');

    fdetailstr[6]++;
    
    drawbutton(but1.x1=((vga_getxdim()-40)>>1),but1.y1=y2-35,
               but1.x2=((vga_getxdim()+40)>>1),but1.y2=y2-10,
               "Ok",1,light,dark,mouseblack,txt);

#define GROUP_BOX(x1,y1,x2,y2,desc,desc_col) \
    draw3dbox(x1,y1,x2,y2,1,0,light,dark); \
    draw3dbox(x1+1,y1+1,x2-1,y2-1,1,1,light,dark); \
    setcolour(idx_medium); \
    len=vgatextsize(2,desc); \
    for(f=0;f<2;f++) vga_drawline(x1+5,y1+f,x1+5+10+len,y1+f); \
    setcolour(desc_col); \
    vgadrawtext(x1+5+5,y1-4,2,desc);

    group1_x=x1+10; group1_y=y1+15;
    group2_x=group1_x; group2_y=but1.y1-52;
    GROUP_BOX(group1_x,group1_y,x2-11,group2_y-15,desc1,txt);
    GROUP_BOX(group2_x,group2_y,x2-11,but1.y1-10,
              dim_from_pic?desc2_pic:desc2,
              got_dim?txt:dark);

    y=group1_y+15;
    for(f=0;f<7;f++,y+=24)
      {
      setcolour(txt);
      if(f==6)
        {
        y=group2_y+15;
        if(!got_dim)
          {
          setcolour(dark);
          fdetailstr[f]="unknown";
          }
        }

      vgadrawtext(group1_x+fdlabelwidth-10-vgatextsize(3,fdlabels[f]),y,
                  3,fdlabels[f]);
      vgadrawtext(group1_x+fdlabelwidth,y,3,fdetailstr[f]);
      }
    }

    set_max_text_width(NO_CLIP_FONT);
    
    do
      {
      key=mousecur_wait_for_keys_or_mouse(ttyfd);
      if(has_mouse && is_end_click_left())
        {
        int mx=mouse_getx(),my=mouse_gety();
        if(mx>=but1.x1 && mx<=but1.x2 && my>=but1.y1 && my<=but1.y2)
          key=RK_ENTER;
        }
      }
    while(key!=RK_ESC && key!=RK_ENTER);
    
    retval=1;
    break;

  /* a box with two buttons, 'Yes' and 'No'. Enter or 'y' selects yes,
   * Esc or 'n' selects no.
   */    
  case MSGBOXTYPE_YESNO:
    drawbutton(but1.x1=(vga_getxdim()>>1)-50,but1.y1=y2-35,
               but1.x2=(vga_getxdim()>>1)-10,but1.y2=y2-10,
               "Yes",1,light,dark,mouseblack,txt);
    drawbutton(but2.x1=(vga_getxdim()>>1)+10,but2.y1=y2-35,
               but2.x2=(vga_getxdim()>>1)+50,but2.y2=y2-10,
               "No",1,light,dark,mouseblack,txt);
    
    setcolour(txt);
    vgadrawtext(x1+20,y1+10,3,message);		/* draw message */
    set_max_text_width(NO_CLIP_FONT);
    
    do
      {
      key=mousecur_wait_for_keys_or_mouse(ttyfd);
      if(has_mouse && is_end_click_left())
        {
        int mx=mouse_getx(),my=mouse_gety();
        if(mx>=but1.x1 && mx<=but1.x2 && my>=but1.y1 && my<=but1.y2)
          key='y';
        if(mx>=but2.x1 && mx<=but2.x2 && my>=but2.y1 && my<=but2.y2)
          key='n';
        }
      }
    while(key!=RK_ESC && key!=RK_ENTER && key!='y' && key!='n');

    retval=(key==RK_ENTER || key=='y');
    break;

  default:
    retval=0;
  }

if(save_and_restore)
  {
  restore_area();
  if(savedpal)
    vga_setpalvec(0,256,palsav);
  last_msgbox_did_restore=1;
  }

if(!msgbox_draw_ok && has_mouse)
  save_mouse_pos();

return(retval);
}


/* get line of input (presumed to be a directory, though this is
 * not checked). Expands `~' to $HOME.
 */
char *cm_getline(int ttyfd,char *prompt,int light,int dark,int txt,int med)
{
static char buf[256],*retptr=NULL;
char *homeptr;
int pos,c,tmp;
int x1,y1,x2,y2,boxwidth,boxheight;
int insert=1;
int maxlen=sizeof(buf)-1;
int firsttime=1;
int curofs=0;

if(retptr!=NULL && retptr!=buf)
  {
  free(retptr);
  retptr=NULL;
  }

pos=0; *buf=0;

boxwidth=620;
boxheight=90;
x1=((vga_getxdim()-boxwidth)>>1);
y1=((vga_getydim()-boxheight)>>1);
x2=((vga_getxdim()+boxwidth)>>1);
y2=((vga_getydim()+boxheight)>>1);

save_area(x1,y1,x2,y2);

blank_area(x1,y1,x2,y2,med);

/* draw outer box */
drawbutton(x1,y1,x2,y2,NULL,0,light,dark,idx_blacknz,0);
draw3dbox(x1+9,y2-46,x2-9,y2-9,1,0,light,dark);

/* draw prompt */
setcolour(txt);
vgadrawtext(x1+30,y1+15,3,prompt);

set_max_text_width(560);

do
  {
  if(firsttime)
    c=RK_NO_KEY;
  else
    do
      {
      c=mousecur_wait_for_keys_or_mouse(ttyfd);
      }
    while(c==RK_NO_KEY);
  
  setcolour(med);
  tmp=vgadrawtext(x1+30,y2-35,3,buf);
  vgadrawtext(x1+30+curofs,y2-35,3,"_");
  
  if(firsttime)
    firsttime=0;
  else
    switch(c)
      {
      case 'b'-0x60: case RK_CURSOR_LEFT:  if(pos>0) pos--; break;
      case 'f'-0x60: case RK_CURSOR_RIGHT: if(pos<strlen(buf)) pos++; break;
      case 'a'-0x60: case RK_HOME:	pos=0; break;
      case 'e'-0x60: case RK_END:	pos=strlen(buf); break;
      case 'i'-0x60: case RK_INSERT:	insert=!insert; break;
      case 'd'-0x60: case RK_DELETE:
        /* delete forwards */
        if(pos<strlen(buf)) memmove(buf+pos,buf+pos+1,strlen(buf)-pos);
        break;
      case 8: case 127:
        /* delete backwards */
        if(pos>0)
          {
          memmove(buf+pos-1,buf+pos,strlen(buf+pos)+1);
          pos--;
          }
        break;
      
      default:
        /* if printable, insert it (or overwrite) */
        if(c>=32 && c<127)
          {
          if(insert)
            {
            if(strlen(buf)<maxlen)
              {
              if(pos<=strlen(buf))
                memmove(buf+pos+1,buf+pos,strlen(buf+pos)+1);
              buf[pos++]=c;
              }
            }
          else
            {
            if(strlen(buf)<maxlen || pos<strlen(buf))
              {
              if(pos>=strlen(buf))
                buf[pos+1]=0;
              
              buf[pos++]=c;
              }
            }
          }
      }
  
  /* draw text and cursor */
  setcolour(txt);
  tmp=buf[pos];
  buf[pos]=0;
  curofs=vgatextsize(3,buf);
  buf[pos]=tmp;
  vgadrawtext(x1+30,y2-35,3,buf);
  vgadrawtext(x1+30+curofs,y2-35,3,"_");
  }
while(c!=RK_ENTER && c!=RK_ESC);

set_max_text_width(NO_CLIP_FONT);

restore_area();

if(c==RK_ESC) return(NULL);

/* expand tilde if needed; only dealt with if it's first char,
 * and the ~user form isn't supported.
 */
if(*buf!='~') return(buf);

homeptr=getenv("HOME");
if(homeptr==NULL) homeptr=buf+strlen(buf);	/* point at a NUL */

/* we want length of homeptr string, plus length of existing string
 * minus the first char (the tilde), plus space for the NUL.
 */

if((retptr=malloc(strlen(homeptr)+strlen(buf)))==NULL)
  return(NULL);

/* the memory will be freed on any subsequent call to this routine */

strcpy(retptr,homeptr);
strcat(retptr,buf+1);

return(retptr);
}