motif_l/m_ruler.c

   1 /*-
   2  * Copyright (c) 1996
   3  *      Rob Zimmermann.  All rights reserved.
   4  * Copyright (c) 1996
   5  *      Keith Bostic.  All rights reserved.
   6  *
   7  * See the LICENSE file for redistribution information.
   8  */
   9
  10 #include "config.h"
  11
  12 #ifndef lint
  13 static const char sccsid[] = "$Id: m_ruler.c,v 8.4 1996/12/18 10:26:44 bostic Exp $ (Berkeley) $Date: 1996/12/18 10:26:44 $";
  14 #endif /* not lint */
  15
  16 /* This module implements a dialog for the text ruler
  17  *
  18  * Interface:
  19  * void __vi_show_text_ruler_dialog( Widget parent, String title )
  20  *      Pops up a text ruler dialog.
  21  *      We allow one per session.  It is not modal.
  22  *
  23  * void __vi_clear_text_ruler_dialog( Widget parent, String title )
  24  *      Pops down the text ruler dialog.
  25  *
  26  * void __vi_set_text_ruler( int row, int col )
  27  *      Changes the displayed position
  28  */
  29
  30 #include <sys/types.h>
  31 #include <sys/queue.h>
  32
  33 #include <X11/X.h>
  34 #include <X11/Intrinsic.h>
  35 #include <X11/Shell.h>
  36 #include <Xm/DrawingA.h>
  37 #include <Xm/RowColumn.h>
  38 #include <Xm/PushBG.h>
  39
  40 #include <bitstring.h>
  41 #include <stdio.h>
  42
  43 #include "../common/common.h"
  44 #include "../ipc/ip.h"
  45 #include "m_motif.h"
  46 #include "vi_mextern.h"
  47
  48 \f
  49 /* globals */
  50
  51 static  Widget          db_ruler = NULL;
  52
  53 static  Boolean         active = False;
  54
  55 static  int             ruler_border = 5,
  56                         ruler_asc;
  57
  58 static  GC              gc_ruler;
  59
  60 static  XFontStruct     *ruler_font;
  61
  62 static  char            text[256];
  63
  64 #if ! defined(SelfTest)
  65 static  XutResource resource[] = {
  66     {   "rulerFont",    XutRKfont,      &ruler_font     },
  67     {   "rulerBorder",  XutRKinteger,   &ruler_border   },
  68 };
  69 #endif
  70
  71 \f
  72 /* change the displayed position */
  73
  74 static void
  75 set_ruler_text( row, col, h, w, asc )
  76         int row, col, *h, *w, *asc;
  77 {
  78     int         dir, des;
  79     XCharStruct over;
  80
  81     /* format the data */
  82     sprintf( text, "%9.d,%-9.d", row+1, col+1 );
  83
  84     /* how big will it be? */
  85     XTextExtents( ruler_font, text, strlen(text), &dir, asc, &des, &over );
  86
  87     /* how big a window will we need? */
  88     *h = 2*ruler_border + over.ascent + over.descent;
  89     *w = 2*ruler_border + over.width;
  90 }
  91
  92
  93 static void
  94 redraw_text()
  95 {
  96     XClearArea( XtDisplay(db_ruler), XtWindow(db_ruler), 0, 0, 0, 0, False );
  97     XDrawString( XtDisplay(db_ruler),
  98                  XtWindow(db_ruler),
  99                  gc_ruler,
 100                  ruler_border, ruler_border + ruler_asc,
 101                  text,
 102                  strlen(text)
 103                  );
 104 }
 105
 106
 107 /*
 108  * PUBLIC: void __vi_set_text_ruler __P((int, int));
 109  */
 110 void
 111 __vi_set_text_ruler( row, col )
 112         int row, col;
 113 {
 114     int h, w;
 115
 116     if ( ! active ) return;
 117
 118     set_ruler_text( row, col, &h, &w, &ruler_asc );
 119
 120     redraw_text();
 121 }
 122
 123 \f
 124 /* callbacks */
 125
 126 static void
 127 cancel_cb()
 128 {
 129 #if defined(SelfTest)
 130     puts( "cancelled" );
 131 #endif
 132     active = False;
 133 }
 134
 135
 136 static  void destroyed()
 137 {
 138 #if defined(SelfTest)
 139     puts( "destroyed" );
 140 #endif
 141
 142     /* some window managers destroy us upon popdown */
 143     db_ruler = NULL;
 144     active   = False;
 145 }
 146
 147
 148 \f
 149 /* Draw and display a dialog the describes nvi options */
 150
 151 #if defined(__STDC__)
 152 static  Widget  create_text_ruler_dialog( Widget parent, String title )
 153 #else
 154 static  Widget  create_text_ruler_dialog( parent, title )
 155         Widget  parent;
 156         String  title;
 157 #endif
 158 {
 159     Widget      box;
 160     int         h, w, asc;
 161     Pixel       fg, bg;
 162
 163     /* already built? */
 164     if ( db_ruler != NULL ) return db_ruler;
 165
 166 #if defined(SelfTest)
 167     ruler_font = XLoadQueryFont( XtDisplay(parent), "9x15" );
 168 #else
 169     /* check the resource database for interesting resources */
 170     __XutConvertResources( parent,
 171                          vi_progname,
 172                          resource,
 173                          XtNumber(resource)
 174                          );
 175 #endif
 176
 177     gc_ruler = XCreateGC( XtDisplay(parent), XtWindow(parent), 0, NULL );
 178     XSetFont( XtDisplay(parent), gc_ruler, ruler_font->fid );
 179
 180     box = XtVaCreatePopupShell( title,
 181                                 transientShellWidgetClass,
 182                                 parent,
 183                                 XmNallowShellResize,    False,
 184                                 0
 185                                 );
 186     XtAddCallback( box, XmNpopdownCallback, cancel_cb, 0 );
 187     XtAddCallback( box, XmNdestroyCallback, destroyed, 0 );
 188
 189     /* should be ok to use the font now */
 190     active = True;
 191
 192     /* how big a window? */
 193     set_ruler_text( 0, 0, &h, &w, &asc );
 194
 195     /* keep this global, we might destroy it later */
 196     db_ruler = XtVaCreateManagedWidget( "Ruler",
 197                                         xmDrawingAreaWidgetClass,
 198                                         box,
 199                                         XmNheight,      h,
 200                                         XmNwidth,       w,
 201                                         0
 202                                         );
 203     /* this callback is for when the drawing area is exposed */
 204     XtAddCallback( db_ruler,
 205                    XmNexposeCallback,
 206                    redraw_text,
 207                    0
 208                    );
 209
 210     /* what colors are selected for the drawing area? */
 211     XtVaGetValues( db_ruler,
 212                    XmNbackground,               &bg,
 213                    XmNforeground,               &fg,
 214                    0
 215                    );
 216     XSetForeground( XtDisplay(db_ruler), gc_ruler, fg );
 217     XSetBackground( XtDisplay(db_ruler), gc_ruler, bg );
 218
 219     /* done */
 220     return db_ruler;
 221 }
 222
 223
 224 \f
 225 /* module entry point
 226  *      __vi_show_text_ruler_dialog( parent, title )
 227  *      __vi_clear_text_ruler_dialog( parent, title )
 228  */
 229
 230 #if defined(__STDC__)
 231 void    __vi_show_text_ruler_dialog( Widget parent, String title )
 232 #else
 233 void    __vi_show_text_ruler_dialog( parent, title )
 234 Widget  parent;
 235 String  title;
 236 #endif
 237 {
 238     Widget      db = create_text_ruler_dialog( parent, title ),
 239                 shell = XtParent(db);
 240     Dimension   height, width;
 241
 242     /* this guy does not resize */
 243     XtVaGetValues( db,
 244                    XmNheight,   &height,
 245                    XmNwidth,    &width,
 246                    0
 247                    );
 248     XtVaSetValues( shell,
 249                    XmNmaxWidth,         width,
 250                    XmNminWidth,         width,
 251                    XmNmaxHeight,        height,
 252                    XmNminHeight,        height,
 253                    0
 254                    );
 255
 256     XtManageChild( db );
 257
 258     /* leave this guy up */
 259     XtPopup( shell, XtGrabNone );
 260
 261     active = True;
 262
 263     /* ask vi core for the current r,c now */
 264 #if ! defined(SelfTest)
 265     __vi_set_text_ruler( __vi_screen->cury, __vi_screen->curx );
 266 #else
 267     __vi_set_text_ruler( rand(), rand() );
 268 #endif
 269 }
 270
 271
 272 #if defined(__STDC__)
 273 void    __vi_clear_text_ruler_dialog()
 274 #else
 275 void    __vi_clear_text_ruler_dialog()
 276 #endif
 277 {
 278     if ( active )
 279         XtPopdown( XtParent(db_ruler) );
 280 }
 281
 282 \f
 283 #if defined(SelfTest)
 284
 285 #if XtSpecificationRelease == 4
 286 #define ArgcType        Cardinal *
 287 #else
 288 #define ArgcType        int *
 289 #endif
 290
 291 static  void    change_pos( Widget w )
 292 {
 293     __vi_set_text_ruler( rand(), rand() );
 294 }
 295
 296 #if defined(__STDC__)
 297 static void show_text_ruler( Widget w, XtPointer data, XtPointer cbs )
 298 #else
 299 static void show_text_ruler( w, data, cbs )
 300 Widget w;
 301 XtPointer       data;
 302 XtPointer       cbs;
 303 #endif
 304 {
 305     __vi_show_text_ruler_dialog( data, "Ruler" );
 306 }
 307
 308 main( int argc, char *argv[] )
 309 {
 310     XtAppContext        ctx;
 311     Widget              top_level, rc, button;
 312     extern              exit();
 313
 314     /* create a top-level shell for the window manager */
 315     top_level = XtVaAppInitialize( &ctx,
 316                                    argv[0],
 317                                    NULL, 0,     /* options */
 318                                    (ArgcType) &argc,
 319                                    argv,        /* might get modified */
 320                                    NULL,
 321                                    NULL
 322                                    );
 323
 324     rc = XtVaCreateManagedWidget( "rc",
 325                                   xmRowColumnWidgetClass,
 326                                   top_level,
 327                                   0
 328                                   );
 329
 330     button = XtVaCreateManagedWidget( "Pop up text ruler dialog",
 331                                       xmPushButtonGadgetClass,
 332                                       rc,
 333                                       0
 334                                       );
 335     XtAddCallback( button, XmNactivateCallback, show_text_ruler, rc );
 336
 337     button = XtVaCreateManagedWidget( "Change Position",
 338                                       xmPushButtonGadgetClass,
 339                                       rc,
 340                                       0
 341                                       );
 342     XtAddCallback( button, XmNactivateCallback, change_pos, rc );
 343
 344     button = XtVaCreateManagedWidget( "Quit",
 345                                       xmPushButtonGadgetClass,
 346                                       rc,
 347                                       0
 348                                       );
 349     XtAddCallback( button, XmNactivateCallback, exit, 0 );
 350
 351     XtRealizeWidget(top_level);
 352     XtAppMainLoop(ctx);
 353 }
 354 #endif