src/ngmx/pulldown.c

   1 /*
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  38 #ifdef HAVE_CONFIG_H
  39 #include <config.h>
  40 #endif
  41
  42 #include <string.h>
  43 #include <smalloc.h>
  44 #include <x11.h>
  45 #include <macros.h>
  46 #include "popup.h"
  47 #include "pulldown.h"
  48
  49 static gmx_bool PDCallBack(t_x11 *x11,XEvent *event,Window w,void *data)
  50 {
  51   t_pulldown *pd;
  52   int        i,x,x1,y,nsel;
  53
  54   pd=(t_pulldown *)data;
  55   y=pd->wd.height;
  56   switch(event->type) {
  57   case Expose:
  58     XSetForeground(x11->disp,x11->gc,x11->fg);
  59     XDrawLine(x11->disp,w,x11->gc,0,y-1,pd->wd.width,y-1);
  60     for(i=0; (i<pd->nmenu); i++)
  61       XDrawString(x11->disp,pd->wd.self,x11->gc,pd->xpos[i],x11->font->ascent,
  62                   pd->title[i],strlen(pd->title[i]));
  63     break;
  64   case ButtonPress:
  65     if (pd->nsel==-1) {
  66       x=event->xbutton.x;
  67       for(nsel=0; (pd->xpos[nsel+1] < x) && (nsel < pd->nmenu-1); nsel++);
  68       pd->nsel=nsel;
  69       x1=max(0,min(pd_width(pd)-menu_width(pd->m[nsel]),pd->xpos[nsel]));
  70       show_menu(x11,pd->m[nsel],x1,y+1,FALSE);
  71     }
  72     break;
  73   case ButtonRelease:
  74     hide_pd(x11,pd);
  75     break;
  76   default:
  77     break;
  78   }
  79   return FALSE;
  80 }
  81
  82 t_pulldown *init_pd(t_x11 *x11,Window Parent,int width,int height,
  83                     unsigned long fg,unsigned long bg,
  84                     int nmenu,int *nsub,t_mentry *ent[],const char **title)
  85 {
  86   t_pulldown *pd;
  87   int        i;
  88
  89   snew(pd,1);
  90   pd->title=title;
  91   pd->nmenu=nmenu;
  92   pd->nsel=-1;
  93   snew(pd->m,nmenu);
  94   snew(pd->xpos,nmenu+1);
  95   pd->xpos[0]=5;
  96   for(i=1; (i<=nmenu); i++)
  97     pd->xpos[i]=20+pd->xpos[i-1]+
  98       XTextWidth(x11->font,title[i-1],strlen(title[i-1]));
  99   if (pd->xpos[nmenu] > width)
 100     printf("Menu too wide\n");
 101
 102   InitWin(&(pd->wd),0,0,width,XTextHeight(x11->font)+2,0,"PullDown");
 103   pd->wd.self=XCreateSimpleWindow(x11->disp,Parent,
 104                                   pd->wd.x, pd->wd.y,
 105                                   pd->wd.width,pd->wd.height,
 106                                   pd->wd.bwidth,fg,bg);
 107   x11->RegisterCallback(x11,pd->wd.self,Parent,PDCallBack,pd);
 108   x11->SetInputMask(x11,pd->wd.self,ExposureMask | ButtonPressMask |
 109                     OwnerGrabButtonMask | ButtonReleaseMask);
 110   XMapWindow(x11->disp,pd->wd.self);
 111
 112   for(i=0; (i<nmenu); i++)
 113     pd->m[i]=init_menu(x11,Parent,fg,bg,nsub[i],ent[i],1);
 114
 115   return pd;
 116 }
 117
 118 void hide_pd(t_x11 *x11,t_pulldown *pd)
 119 {
 120   if (pd->nsel != -1)
 121     hide_menu(x11,pd->m[pd->nsel]);
 122   pd->nsel=-1;
 123 }
 124
 125 void check_pd_item(t_pulldown *pd,int nreturn,gmx_bool bStatus)
 126 {
 127   int i;
 128
 129   for(i=0; (i<pd->nmenu); i++)
 130     check_menu_item(pd->m[i],nreturn,bStatus);
 131 }
 132
 133 void done_pd(t_x11 *x11,t_pulldown *pd)
 134 {
 135   int i;
 136
 137   for(i=0; (i<pd->nmenu); i++)
 138     done_menu(x11,pd->m[i]);
 139   x11->UnRegisterCallback(x11,pd->wd.self);
 140   sfree(pd->m);
 141   sfree(pd->xpos);
 142 }
 143
 144 int pd_width(t_pulldown *pd)
 145 {
 146   int i,w;
 147
 148   w=0;
 149   for(i=0; (i<pd->nmenu); i++)
 150     w=max(w,menu_width(pd->m[i]));
 151   w=max(w,pd->xpos[pd->nmenu]);
 152   return w;
 153 }
 154
 155 int pd_height(t_pulldown *pd)
 156 {
 157   int i,h;
 158
 159   h=0;
 160   for(i=0; (i<pd->nmenu); i++)
 161     h=max(h,menu_height(pd->m[i]));
 162
 163   return h;
 164 }
 165