src/programs/view/pulldown.cpp

   1 /*
   2  * This file is part of the GROMACS molecular simulation package.
   3  *
   4  * Copyright (c) 1991-2000, University of Groningen, The Netherlands.
   5  * Copyright (c) 2001-2013, The GROMACS development team.
   6  * Copyright (c) 2013,2014,2015,2019, by the GROMACS development team, led by
   7  * Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
   8  * and including many others, as listed in the AUTHORS file in the
   9  * top-level source directory and at http://www.gromacs.org.
  10  *
  11  * GROMACS is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public License
  13  * as published by the Free Software Foundation; either version 2.1
  14  * of the License, or (at your option) any later version.
  15  *
  16  * GROMACS is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with GROMACS; if not, see
  23  * http://www.gnu.org/licenses, or write to the Free Software Foundation,
  24  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
  25  *
  26  * If you want to redistribute modifications to GROMACS, please
  27  * consider that scientific software is very special. Version
  28  * control is crucial - bugs must be traceable. We will be happy to
  29  * consider code for inclusion in the official distribution, but
  30  * derived work must not be called official GROMACS. Details are found
  31  * in the README & COPYING files - if they are missing, get the
  32  * official version at http://www.gromacs.org.
  33  *
  34  * To help us fund GROMACS development, we humbly ask that you cite
  35  * the research papers on the package. Check out http://www.gromacs.org.
  36  */
  37 #include "gmxpre.h"
  38
  39 #include "pulldown.h"
  40
  41 #include <cstdio>
  42 #include <cstring>
  43
  44 #include <algorithm>
  45
  46 #include "gromacs/utility/smalloc.h"
  47
  48 #include "popup.h"
  49 #include "x11.h"
  50
  51 static bool PDCallBack(t_x11* x11, XEvent* event, Window w, void* data)
  52 {
  53     t_pulldown* pd;
  54     int         i, x, x1, y, nsel;
  55
  56     pd = (t_pulldown*)data;
  57     y  = pd->wd.height;
  58     switch (event->type)
  59     {
  60         case Expose:
  61             XSetForeground(x11->disp, x11->gc, x11->fg);
  62             XDrawLine(x11->disp, w, x11->gc, 0, y - 1, pd->wd.width, y - 1);
  63             for (i = 0; (i < pd->nmenu); i++)
  64             {
  65                 XDrawString(x11->disp, pd->wd.self, x11->gc, pd->xpos[i], x11->font->ascent,
  66                             pd->title[i], std::strlen(pd->title[i]));
  67             }
  68             break;
  69         case ButtonPress:
  70             if (pd->nsel == -1)
  71             {
  72                 x = event->xbutton.x;
  73                 for (nsel = 0; (pd->xpos[nsel + 1] < x) && (nsel < pd->nmenu - 1); nsel++)
  74                 {
  75                     ;
  76                 }
  77                 pd->nsel = nsel;
  78                 x1 = std::max(0, std::min(pd_width(pd) - menu_width(pd->m[nsel]), pd->xpos[nsel]));
  79                 show_menu(x11, pd->m[nsel], x1, y + 1, false);
  80             }
  81             break;
  82         case ButtonRelease: hide_pd(x11, pd); break;
  83         default: break;
  84     }
  85     return false;
  86 }
  87
  88 t_pulldown* init_pd(t_x11*        x11,
  89                     Window        Parent,
  90                     int           width,
  91                     unsigned long fg,
  92                     unsigned long bg,
  93                     int           nmenu,
  94                     int*          nsub,
  95                     t_mentry*     ent[],
  96                     const char**  title)
  97 {
  98     t_pulldown* pd;
  99     int         i;
 100
 101     snew(pd, 1);
 102     pd->title = title;
 103     pd->nmenu = nmenu;
 104     pd->nsel  = -1;
 105     snew(pd->m, nmenu);
 106     snew(pd->xpos, nmenu + 1);
 107     pd->xpos[0] = 5;
 108     for (i = 1; (i <= nmenu); i++)
 109     {
 110         pd->xpos[i] =
 111                 20 + pd->xpos[i - 1] + XTextWidth(x11->font, title[i - 1], std::strlen(title[i - 1]));
 112     }
 113     if (pd->xpos[nmenu] > width)
 114     {
 115         std::printf("Menu too wide\n");
 116     }
 117
 118     InitWin(&(pd->wd), 0, 0, width, XTextHeight(x11->font) + 2, 0, "PullDown");
 119     pd->wd.self = XCreateSimpleWindow(x11->disp, Parent, pd->wd.x, pd->wd.y, pd->wd.width,
 120                                       pd->wd.height, pd->wd.bwidth, fg, bg);
 121     x11->RegisterCallback(x11, pd->wd.self, Parent, PDCallBack, pd);
 122     x11->SetInputMask(x11, pd->wd.self,
 123                       ExposureMask | ButtonPressMask | OwnerGrabButtonMask | ButtonReleaseMask);
 124     XMapWindow(x11->disp, pd->wd.self);
 125
 126     for (i = 0; (i < nmenu); i++)
 127     {
 128         pd->m[i] = init_menu(x11, Parent, fg, bg, nsub[i], ent[i], 1);
 129     }
 130
 131     return pd;
 132 }
 133
 134 void hide_pd(t_x11* x11, t_pulldown* pd)
 135 {
 136     if (pd->nsel != -1)
 137     {
 138         hide_menu(x11, pd->m[pd->nsel]);
 139     }
 140     pd->nsel = -1;
 141 }
 142
 143 void check_pd_item(t_pulldown* pd, int nreturn, bool bStatus)
 144 {
 145     int i;
 146
 147     for (i = 0; (i < pd->nmenu); i++)
 148     {
 149         check_menu_item(pd->m[i], nreturn, bStatus);
 150     }
 151 }
 152
 153 void done_pd(t_x11* x11, t_pulldown* pd)
 154 {
 155     int i;
 156
 157     for (i = 0; (i < pd->nmenu); i++)
 158     {
 159         done_menu(x11, pd->m[i]);
 160     }
 161     x11->UnRegisterCallback(x11, pd->wd.self);
 162     sfree(pd->m);
 163     sfree(pd->xpos);
 164 }
 165
 166 int pd_width(t_pulldown* pd)
 167 {
 168     int i, w;
 169
 170     w = 0;
 171     for (i = 0; (i < pd->nmenu); i++)
 172     {
 173         w = std::max(w, menu_width(pd->m[i]));
 174     }
 175     w = std::max(w, pd->xpos[pd->nmenu]);
 176     return w;
 177 }
 178
 179 int pd_height(t_pulldown* pd)
 180 {
 181     int i, h;
 182
 183     h = 0;
 184     for (i = 0; (i < pd->nmenu); i++)
 185     {
 186         h = std::max(h, menu_height(pd->m[i]));
 187     }
 188
 189     return h;
 190 }