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