mod_menu/mkmenu.c

   1 /*
   2  * ion/mod_menu/mkmenu.c
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2009.
   5  *
   6  * See the included file LICENSE for details.
   7  */
   8
   9 #include <limits.h>
  10 #include <ioncore/common.h>
  11 #include <ioncore/pointer.h>
  12 #include <ioncore/stacking.h>
  13 #include <ioncore/grab.h>
  14 #include <libextl/extl.h>
  15 #include "menu.h"
  16 #include "mkmenu.h"
  17
  18
  19 /*--lowlevel routine not to be called by the user--EXTL_DOC
  20  * Display a menu inside multiplexer. The \var{handler} parameter
  21  * is a function that gets the selected menu entry as argument and
  22  * should call it with proper parameters. The table \var{tab} is a
  23  * list of menu entries of the form \code{\{name = ???, [ submenu_fn = ??? ]\}}.
  24  * The function \var{submenu_fn} return a similar submenu definition
  25  * when called.
  26  *
  27  * Do not use this function directly. Use  \fnref{mod_menu.menu} and
  28  * \fnref{mod_menu.bigmenu}.
  29  */
  30 EXTL_EXPORT
  31 WMenu *mod_menu_do_menu(WMPlex *mplex, ExtlFn handler, ExtlTab tab,
  32                         ExtlTab param)
  33 {
  34     WMenuCreateParams fnp;
  35     WMPlexAttachParams par;
  36
  37     fnp.handler=handler;
  38     fnp.tab=tab;
  39     fnp.pmenu_mode=FALSE;
  40     fnp.submenu_mode=FALSE;
  41     fnp.big_mode=extl_table_is_bool_set(param, "big");
  42     fnp.initial=0;
  43     extl_table_gets_i(param, "initial", &(fnp.initial));
  44     fnp.refg.x=0;
  45     fnp.refg.y=0;
  46     fnp.refg.w=0;
  47     fnp.refg.h=0;
  48
  49     par.flags=(MPLEX_ATTACH_SWITCHTO|
  50                MPLEX_ATTACH_LEVEL|
  51                MPLEX_ATTACH_UNNUMBERED|
  52                MPLEX_ATTACH_SIZEPOLICY);
  53     par.szplcy=SIZEPOLICY_FULL_BOUNDS;
  54     par.level=STACKING_LEVEL_MODAL1+2;
  55
  56     return (WMenu*)mplex_do_attach_new(mplex, &par,
  57                                        (WRegionCreateFn*)create_menu,
  58                                        (void*)&fnp);
  59 }
  60
  61
  62 /*--lowlevel routine not to be called by the user--EXTL_DOC
  63  * Display a pop-up menu inside window \var{where}. This function
  64  * can only be called from a mouse/pointing device button press handler
  65  * and the menu will be placed below the point where the press occured.
  66  * The \var{handler} and \var{tab} parameters are similar to those of
  67  * \fnref{menu_menu}.
  68  *
  69  * Do not use this function directly. Use \fnref{mod_menu.pmenu}.
  70  */
  71 EXTL_EXPORT
  72 WMenu *mod_menu_do_pmenu(WWindow *where, ExtlFn handler, ExtlTab tab)
  73 {
  74     WScreen *scr;
  75     WMenuCreateParams fnp;
  76     XEvent *ev=ioncore_current_pointer_event();
  77     WMenu *menu;
  78     WFitParams fp;
  79
  80     if(ev==NULL || ev->type!=ButtonPress)
  81         return NULL;
  82
  83     scr=region_screen_of((WRegion*)where);
  84
  85     if(scr==NULL)
  86         return NULL;
  87
  88     fnp.handler=handler;
  89     fnp.tab=tab;
  90     fnp.pmenu_mode=TRUE;
  91     fnp.big_mode=FALSE;
  92     fnp.submenu_mode=FALSE;
  93     fnp.initial=0;
  94     fnp.refg.x=ev->xbutton.x_root-REGION_GEOM(scr).x;
  95     fnp.refg.y=ev->xbutton.y_root-REGION_GEOM(scr).y;
  96     fnp.refg.w=0;
  97     fnp.refg.h=0;
  98
  99     fp.mode=REGION_FIT_BOUNDS;
 100     fp.g.x=REGION_GEOM(where).x;
 101     fp.g.y=REGION_GEOM(where).y;
 102     fp.g.w=REGION_GEOM(where).w;
 103     fp.g.h=REGION_GEOM(where).h;
 104
 105     menu=create_menu((WWindow*)scr, &fp, &fnp);
 106
 107     if(menu==NULL)
 108         return NULL;
 109
 110     region_restack((WRegion*)menu, None, Above);
 111
 112     if(!ioncore_set_drag_handlers((WRegion*)menu,
 113                             NULL,
 114                             (WMotionHandler*)menu_motion,
 115                             (WButtonHandler*)menu_release,
 116                             NULL,
 117                             (GrabKilledHandler*)menu_cancel)){
 118         destroy_obj((Obj*)menu);
 119         return NULL;
 120     }
 121
 122     region_map((WRegion*)menu);
 123
 124     return menu;
 125 }
 126