git.chise.org Git - chise/xemacs-chise.git-/blob - src/EmacsManager.c

   1 /* Emacs manager widget.
   2    Copyright (C) 1993-1995 Sun Microsystems, Inc.
   3    Copyright (C) 1995 Ben Wing.
   4
   5 This file is part of XEmacs.
   6
   7 XEmacs is free software; you can redistribute it and/or modify it
   8 under the terms of the GNU General Public License as published by the
   9 Free Software Foundation; either version 2, or (at your option) any
  10 later version.
  11
  12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
  13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with XEmacs; see the file COPYING.  If not, write to
  19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 /* Synched up with: Not in FSF. */
  23
  24 /* Written by Ben Wing, May, 1994. */
  25
  26 #include <config.h>
  27
  28 #include <X11/StringDefs.h>
  29 #include "EmacsManagerP.h"
  30 #ifdef LWLIB_MENUBARS_MOTIF
  31 #include <Xm/RowColumn.h>
  32 #endif /* LWLIB_MENUBARS_MOTIF */
  33
  34 /* For I, Emacs, am a kind god.  Unlike the goddess Athena and the
  35    Titan Motif, I require no ritual sacrifices to placate the lesser
  36    daemons of geometry management. */
  37
  38 static XtResource resources[] = {
  39 #define offset(field) XtOffset(EmacsManagerWidget, emacs_manager.field)
  40   { XtNresizeCallback, XtCCallback,
  41     XtRCallback, sizeof (XtCallbackList),
  42     offset(resize_callback), XtRImmediate, (XtPointer) 0 },
  43   { XtNqueryGeometryCallback, XtCCallback,
  44     XtRCallback, sizeof (XtCallbackList),
  45     offset(query_geometry_callback), XtRImmediate, (XtPointer) 0 },
  46   { XtNuserData, XtCUserData,
  47     XtRPointer, sizeof (XtPointer),
  48     offset(user_data), XtRImmediate, (XtPointer) 0 },
  49 };
  50
  51 /****************************************************************
  52  *
  53  * Full class record constant
  54  *
  55  ****************************************************************/
  56
  57 static XtGeometryResult QueryGeometry (Widget wid,
  58                                        XtWidgetGeometry *request,
  59                                        XtWidgetGeometry *reply);
  60 static void Resize (Widget w);
  61 static XtGeometryResult GeometryManager (Widget w, XtWidgetGeometry *request,
  62                                          XtWidgetGeometry *reply);
  63 static void ChangeManaged (Widget w);
  64 static void Realize (Widget w, Mask *valueMask,
  65                      XSetWindowAttributes *attributes);
  66 static void ClassInitialize (void);
  67
  68 EmacsManagerClassRec emacsManagerClassRec = {
  69   {
  70 /* core_class fields      */
  71 #ifdef LWLIB_USES_MOTIF
  72     /* superclass         */    (WidgetClass) &xmManagerClassRec,
  73 #else
  74     /* superclass         */    (WidgetClass) &compositeClassRec,
  75 #endif
  76     /* class_name         */    "EmacsManager",
  77     /* widget_size        */    sizeof (EmacsManagerRec),
  78     /* class_initialize   */    ClassInitialize,
  79     /* class_part_init    */    NULL,
  80     /* class_inited       */    FALSE,
  81     /* initialize         */    NULL,
  82     /* initialize_hook    */    NULL,
  83     /* realize            */    Realize,
  84     /* actions            */    NULL,
  85     /* num_actions        */    0,
  86     /* resources          */    resources,
  87     /* num_resources      */    XtNumber(resources),
  88     /* xrm_class          */    NULLQUARK,
  89     /* compress_motion    */    TRUE,
  90     /* compress_exposure  */    XtExposeCompressMaximal | XtExposeNoRegion,
  91     /* compress_enterleave*/    TRUE,
  92     /* visible_interest   */    FALSE,
  93     /* destroy            */    NULL,
  94     /* resize             */    Resize,
  95     /* expose             */    NULL,
  96     /* set_values         */    NULL,
  97     /* set_values_hook    */    NULL,
  98     /* set_values_almost  */    XtInheritSetValuesAlmost,
  99     /* get_values_hook    */    NULL,
 100     /* accept_focus       */    NULL,
 101     /* version            */    XtVersion,
 102     /* callback_private   */    NULL,
 103     /* tm_table           */    XtInheritTranslations,
 104     /* query_geometry     */    QueryGeometry,
 105     /* display_accelerator*/    XtInheritDisplayAccelerator,
 106     /* extension          */    NULL
 107   },
 108   {
 109 /* composite_class fields */
 110     /* geometry_manager   */    GeometryManager,
 111     /* change_managed     */    ChangeManaged,
 112     /* insert_child       */    XtInheritInsertChild,
 113     /* delete_child       */    XtInheritDeleteChild,
 114     /* extension          */    NULL
 115   },
 116 #ifdef LWLIB_USES_MOTIF
 117   {
 118   /* constraint_class fields */
 119       NULL,                                     /* resource list        */
 120       0,                                        /* num resources        */
 121       0,                                        /* constraint size      */
 122       (XtInitProc)NULL,                         /* init proc            */
 123       (XtWidgetProc)NULL,                       /* destroy proc         */
 124       (XtSetValuesFunc)NULL,                    /* set values proc      */
 125       NULL,                                     /* extension            */
 126   },
 127   {
 128 /* manager_class fields */
 129     XtInheritTranslations,                      /* translations           */
 130     NULL,                                       /* syn_resources          */
 131     0,                                          /* num_syn_resources      */
 132     NULL,                                       /* syn_cont_resources     */
 133     0,                                          /* num_syn_cont_resources */
 134     XmInheritParentProcess,                     /* parent_process         */
 135     NULL,                                       /* extension              */
 136   },
 137 #endif
 138   {
 139 /* emacs_manager_class fields */
 140     /* empty              */    0,
 141   }
 142 };
 143
 144 WidgetClass emacsManagerWidgetClass = (WidgetClass)&emacsManagerClassRec;
 145
 146 /* What is my preferred size?  A suggested size may be given. */
 147
 148 static XtGeometryResult
 149 QueryGeometry (Widget w, XtWidgetGeometry *request, XtWidgetGeometry *reply)
 150 {
 151   EmacsManagerWidget emw = (EmacsManagerWidget) w;
 152   EmacsManagerQueryGeometryStruct struc;
 153   int request_mode = request->request_mode;
 154
 155   struc.request_mode = request_mode;
 156   struc.proposed_width  = (request_mode & CWWidth)  ? request->width  : 0;
 157   struc.proposed_height = (request_mode & CWHeight) ? request->height : 0;
 158   XtCallCallbackList (w, emw->emacs_manager.query_geometry_callback, &struc);
 159   reply->request_mode = CWWidth | CWHeight;
 160   reply->width  = struc.proposed_width;
 161   reply->height = struc.proposed_height;
 162   if (((request_mode & CWWidth)  && (request->width  != reply->width)) ||
 163       ((request_mode & CWHeight) && (request->height != reply->height)))
 164     return XtGeometryAlmost;
 165   return XtGeometryYes;
 166 }
 167
 168 static void
 169 Resize (Widget w)
 170 {
 171   EmacsManagerWidget emw = (EmacsManagerWidget) w;
 172   EmacsManagerResizeStruct struc;
 173
 174   struc.width  = w->core.width;
 175   struc.height = w->core.height;
 176   XtCallCallbackList (w, emw->emacs_manager.resize_callback, &struc);
 177 }
 178
 179 static XtGeometryResult
 180 GeometryManager (Widget w, XtWidgetGeometry *request, XtWidgetGeometry *reply)
 181 {
 182   /* Sure, any changes are fine. */
 183
 184 #ifdef LWLIB_MENUBARS_MOTIF
 185   /* The Motif menubar will merrily request a new size every time a
 186      child is added or deleted.  Blow it off because it doesn't know
 187      what it's talking about. */
 188   if (XtClass (w) != xmRowColumnWidgetClass)
 189 #endif /* LWLIB_MENUBARS_MOTIF */
 190     {
 191       if (request->request_mode & CWWidth)  w->core.width  = request->width;
 192       if (request->request_mode & CWHeight) w->core.height = request->height;
 193     }
 194   if (request->request_mode & CWBorderWidth)
 195     w->core.border_width = request->border_width;
 196   if (request->request_mode & CWX) w->core.x = request->x;
 197   if (request->request_mode & CWY) w->core.y = request->y;
 198
 199   return XtGeometryYes;
 200 }
 201
 202 static void
 203 ChangeManaged (Widget w)
 204 {
 205   if (!XtIsRealized (w))
 206     {
 207       XtWidgetGeometry request, reply;
 208
 209       /* find out how big we'd like to be ... */
 210
 211       request.request_mode = 0;
 212       XtQueryGeometry (w, &request, &reply);
 213       EmacsManagerChangeSize (w, reply.width, reply.height);
 214     }
 215 }
 216
 217 static void
 218 Realize (Widget w, Mask *valueMask, XSetWindowAttributes *attributes)
 219 {
 220   attributes->bit_gravity = NorthWestGravity;
 221   *valueMask |= CWBitGravity;
 222
 223   XtCreateWindow (w, (unsigned) InputOutput, (Visual *) CopyFromParent,
 224                   *valueMask, attributes);
 225 }
 226
 227 static void
 228 ClassInitialize (void)
 229 {
 230   return;
 231 }
 232
 233 void
 234 EmacsManagerChangeSize (Widget w, Dimension width, Dimension height)
 235 {
 236   if (width == 0)
 237     width = w->core.width;
 238   if (height == 0)
 239     height = w->core.height;
 240
 241   /* do nothing if we're already that size */
 242   if (w->core.width != width || w->core.height != height)
 243     {
 244       XtGeometryResult result =
 245         XtMakeResizeRequest (w, width, height, &w->core.width, &w->core.height);
 246       if (result == XtGeometryNo)
 247         return;
 248       if (result == XtGeometryAlmost)
 249         XtMakeResizeRequest (w, w->core.width, w->core.height, NULL, NULL);
 250       Resize (w);
 251     }
 252 }
 253
 254