src/programs/view/popup.cpp

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  37 #include "gmxpre.h"
  38
  39 #include "popup.h"
  40
  41 #include <cmath>
  42 #include <cstring>
  43
  44 #include <algorithm>
  45
  46 #include "gromacs/utility/smalloc.h"
  47
  48 #include "x11.h"
  49 #include "xutil.h"
  50
  51 static bool ChildCallBack(t_x11 *x11, XEvent *event, Window w, void *data)
  52 {
  53     t_child   *child;
  54     t_mentry  *m;
  55     t_windata *wd;
  56     XEvent     letter;
  57
  58     child = (t_child *)data;
  59     m     = child->m;
  60     wd    = &(child->wd);
  61     switch (event->type)
  62     {
  63         case Expose:
  64             XSetForeground(x11->disp, x11->gc, x11->fg);
  65             TextInRect(x11, w, m->str, 16, 0, wd->width-16-2, wd->height-2,
  66                        eXLeft, eYCenter);
  67             if (m->bChecked)
  68             {
  69                 int y = x11->font->ascent;
  70                 XDrawLine(x11->disp, w, x11->gc, 2, (y*2)/3, 6, y);
  71                 XDrawLine(x11->disp, w, x11->gc, 3, (y*2)/3, 7, y);
  72                 XDrawLine(x11->disp, w, x11->gc, 7, y, 12, 2);
  73             }
  74             break;
  75         case EnterNotify:
  76             LightBorder(x11->disp, w, x11->fg);
  77             break;
  78         case LeaveNotify:
  79             LightBorder(x11->disp, w, x11->bg);
  80             break;
  81         case ButtonRelease:
  82             letter.type                 = ClientMessage;
  83             letter.xclient.display      = x11->disp;
  84             letter.xclient.window       = m->send_to ? m->send_to : child->Parent;
  85             letter.xclient.message_type = 0;
  86             letter.xclient.format       = 32;
  87             letter.xclient.data.l[0]    = m->nreturn;
  88             XSendEvent(x11->disp, letter.xclient.window, True, 0, &letter);
  89             break;
  90         default:
  91             break;
  92     }
  93     return false;
  94 }
  95
  96 static bool MenuCallBack(t_x11 *x11, XEvent *event, Window /*w*/, void *data)
  97 {
  98     t_menu *m;
  99
 100     m = (t_menu *)data;
 101     switch (event->type)
 102     {
 103         case Expose:
 104             /* Nothing to be done */
 105             if (m->bGrabbed)
 106             {
 107                 m->bGrabbed =
 108                     GrabOK(stderr, XGrabPointer(x11->disp, m->wd.self, True,
 109                                                 ButtonReleaseMask, GrabModeAsync,
 110                                                 GrabModeAsync, m->wd.self, None, CurrentTime));
 111             }
 112             break;
 113         case ButtonRelease:
 114             hide_menu(x11, m);
 115             break;
 116         case ClientMessage:
 117             event->xclient.window = m->Parent;
 118             XSendEvent(x11->disp, m->Parent, True, 0, event);
 119             break;
 120         default:
 121             break;
 122     }
 123     return false;
 124 }
 125
 126 t_menu *init_menu(t_x11 *x11, Window Parent, unsigned long fg, unsigned long bg,
 127                   int nent, t_mentry ent[], int ncol)
 128 {
 129     int        i, mlen, mht, area, ht;
 130     int        j, k, l;
 131     int        frows, fcol;
 132     t_menu    *m;
 133     t_child   *kid;
 134     t_windata *w;
 135
 136     snew(m, 1);
 137     m->nitem  = nent;
 138     m->Parent = Parent;
 139
 140     /* Calculate dimensions of the menu */
 141     mlen = 0;
 142     for (i = 0; (i < nent); i++)
 143     {
 144         mlen = std::max(mlen, XTextWidth(x11->font, ent[i].str, std::strlen(ent[i].str)));
 145     }
 146     mht = XTextHeight(x11->font);
 147     /* Now we have the biggest single box, add a border of 2 pixels */
 148     mlen += 20; /* We need extra space at the left for checkmarks */
 149     mht  += 4;
 150     /* Calculate the area of the menu */
 151     area = mlen*mht;
 152     ht   = std::sqrt(area);
 153     /* No the number of rows per column, only beyond 8 rows */
 154     if (ncol == 0)
 155     {
 156         if (nent > 8)
 157         {
 158             frows = (1+ht/mht);
 159         }
 160         else
 161         {
 162             frows = nent;
 163         }
 164         fcol = nent/frows;
 165     }
 166     else
 167     {
 168         fcol  = ncol;
 169         frows = nent/ncol;
 170         if (nent % ncol)
 171         {
 172             frows++;
 173         }
 174     }
 175     InitWin(&(m->wd), 10, 10, fcol*mlen, frows*mht, 1, "Menu");
 176     snew(m->item, nent);
 177     m->wd.self = XCreateSimpleWindow(x11->disp, Parent,
 178                                      m->wd.x, m->wd.y,
 179                                      m->wd.width, m->wd.height,
 180                                      m->wd.bwidth, fg, bg);
 181     x11->RegisterCallback(x11, m->wd.self, Parent, MenuCallBack, m);
 182     x11->SetInputMask(x11, m->wd.self, ExposureMask |
 183                       OwnerGrabButtonMask | ButtonReleaseMask);
 184
 185     for (j = l = 0; (j < fcol); j++)
 186     {
 187         for (k = 0; (k < frows) && (l < nent); k++, l++)
 188         {
 189             kid         = &(m->item[l]);
 190             kid->m      = &(ent[l]);
 191             kid->Parent = Parent;
 192             w           = &(kid->wd);
 193             InitWin(w, j*mlen, k*mht, mlen-2, mht-2, 1, nullptr);
 194             w->self = XCreateSimpleWindow(x11->disp, m->wd.self,
 195                                           w->x, w->y, w->width, w->height,
 196                                           w->bwidth, bg, bg);
 197             x11->RegisterCallback(x11, w->self, m->wd.self,
 198                                   ChildCallBack, kid);
 199             x11->SetInputMask(x11, w->self,
 200                               ButtonPressMask | ButtonReleaseMask |
 201                               OwnerGrabButtonMask | ExposureMask |
 202                               EnterWindowMask | LeaveWindowMask);
 203         }
 204     }
 205
 206     return m;
 207 }
 208
 209 void show_menu(t_x11 *x11, t_menu *m, int x, int y, bool bGrab)
 210 {
 211     XMoveWindow(x11->disp, m->wd.self, x, y);
 212     m->bGrabbed = bGrab;
 213     XMapWindow(x11->disp, m->wd.self);
 214     XMapSubwindows(x11->disp, m->wd.self);
 215 }
 216
 217 void hide_menu(t_x11 *x11, t_menu *m)
 218 {
 219     if (m->bGrabbed)
 220     {
 221         XUngrabPointer(x11->disp, CurrentTime);
 222     }
 223     XUnmapWindow(x11->disp, m->wd.self);
 224 }
 225
 226 void check_menu_item(t_menu *m, int nreturn, bool bStatus)
 227 {
 228     int i;
 229
 230     for (i = 0; (i < m->nitem); i++)
 231     {
 232         if (m->item[i].m->nreturn == nreturn)
 233         {
 234             m->item[i].m->bChecked = bStatus;
 235         }
 236     }
 237 }
 238
 239 void done_menu(t_x11 *x11, t_menu *m)
 240 {
 241     int i;
 242
 243     for (i = 0; (i < m->nitem); i++)
 244     {
 245         x11->UnRegisterCallback(x11, m->item[i].wd.self);
 246     }
 247     sfree(m->item);
 248     x11->UnRegisterCallback(x11, m->wd.self);
 249     sfree(m);
 250 }
 251
 252 int menu_width(t_menu *m)
 253 {
 254     return m->wd.width;
 255 }
 256
 257 int menu_height(t_menu *m)
 258 {
 259     return m->wd.height;
 260 }