xmore.c revision 9c125d91 
1/*
2 * $Xorg: xmore.c,v 1.1 2004/04/30 02:05:54 gisburn Exp $
3 *
4Copyright 2004 Roland Mainz <roland.mainz@nrubsig.org>
5
6Permission to use, copy, modify, distribute, and sell this software and its
7documentation for any purpose is hereby granted without fee, provided that
8the above copyright notice appear in all copies and that both that
9copyright notice and this permission notice appear in supporting
10documentation.
11
12The above copyright notice and this permission notice shall be included in
13all copies or substantial portions of the Software.
14
15THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
18OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
19AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
20CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21
22Except as contained in this notice, the name of The Open Group shall not be
23used in advertising or otherwise to promote the sale, use or other dealings
24in this Software without prior written authorization from The Open Group.
25 *
26 */
27
28/* Force ANSI C prototypes from X11 headers */
29#ifndef FUNCPROTO
30#define FUNCPROTO 15
31#endif /* !FUNCPROTO */
32
33#include <X11/StringDefs.h>
34#include <X11/Intrinsic.h>
35#include <X11/Shell.h>
36#include <X11/Xaw/Form.h>
37#include <X11/Xaw/List.h>
38#include <X11/Xaw/Command.h>
39#include <X11/Xaw/AsciiText.h>
40#include <X11/Xaw/Cardinals.h>
41
42#include "xmore.h"
43
44#include <stdlib.h>
45#include <stdio.h>
46#include <limits.h>
47
48/* Turn a NULL pointer string into an empty string */
49#define NULLSTR(x) (((x)!=NULL)?(x):(""))
50
51#define Error(x) { printf x ; exit(EXIT_FAILURE); }
52#define Assertion(expr, msg) { if (!(expr)) { Error msg } }
53#define Log(x)   { if (userOptions.verbose) printf x; }
54
55/* Global vars */
56static Widget        toplevel          = NULL;
57static Widget        text              = NULL;
58static const char   *ProgramName;  /* program name   (from argv[0]) */
59static const char   *viewFileName; /* file to browse (from argv[1]) */
60
61/* prototypes */
62static void quitAction(Widget w,  XEvent *event, String *params, Cardinal *num_params);
63static void quitXtProc(Widget w, XtPointer client_data, XtPointer callData);
64
65static XrmOptionDescRec options[] = {
66{
67  "-v", "*verbose", XrmoptionNoArg, (XPointer) "on" },
68};
69
70
71static XtActionsRec actions[] = {
72    { "quit",          quitAction      },
73};
74
75/* See xmore.h */
76static XMoreResourceData userOptions;
77
78#define Offset(field) XtOffsetOf(XMoreResourceData, field)
79
80static XtResource resources[] = {
81  {"verbose", "Verbose", XtRBoolean, sizeof(Boolean),  Offset(verbose),  XtRImmediate, (XtPointer)False},
82  {"textfont", XtCFont,  XtRFontSet, sizeof(XFontSet), Offset(textfont), XtRString,    STANDARDFONT},
83};
84
85
86static String fallback_resources[] = {
87#ifdef NOTYET
88    "*iconPixmap:    xmore32",
89    "*iconMask:      xmore32",
90#endif /* NOTYET */
91    "*textfont: " STANDARDFONT,
92    "*international: True", /* set this globally for ALL widgets to avoid wiered crashes */
93    "*text.Translations: #override \\n\\"
94        "\tCtrl<Key>S:     no-op(RingBell)\\n\\"
95        "\tCtrl<Key>R:     no-op(RingBell)\\n\\"
96        "\t<Key>space:     next-page()\\n\\"
97        "\t<Key>F:         next-page()\\n\\"
98        "\tCtrl<Key>B:     previous-page()\\n\\"
99        "\t<Key>B:         previous-page()\\n\\"
100        "\t<Key>K:         scroll-one-line-down()\\n\\"
101        "\t<Key>Y:         scroll-one-line-down()\\n\\"
102        "\t<Key>Return:    scroll-one-line-up()\\n\\"
103        "\t<Key>J:         scroll-one-line-up()\\n\\"
104        "\t<Key>E:         scroll-one-line-up()\\n\\"
105        "\t<Key>q:         quit()\\n",
106    "*text.baseTranslations: #override \\n\\"
107        "\t<Key>space:     next-page()\\n\\"
108        "\t<Key>F:         next-page()\\n\\"
109        "\tCtrl<Key>B:     previous-page()\\n\\"
110        "\t<Key>K:         scroll-one-line-down()\\n\\"
111        "\t<Key>Y:         scroll-one-line-down()\\n\\"
112        "\t<Key>Return:    scroll-one-line-up()\\n\\"
113        "\t<Key>J:         scroll-one-line-up()\\n\\"
114        "\t<Key>E:         scroll-one-line-up()\\n\\"
115        "\t<Key>q:         quit()\\n",
116    NULL,
117};
118
119static void
120quitAction(Widget w,  XEvent *event, String *params, Cardinal *num_params)
121{
122    XtAppSetExitFlag(XtWidgetToApplicationContext(w));
123}
124
125static void
126quitXtProc(Widget w, XtPointer client_data, XtPointer callData)
127{
128    XtCallActionProc(w, "quit", NULL, NULL, 0);
129}
130
131int main( int argc, char *argv[] )
132{
133  XtAppContext app;
134  Widget       form;
135  Widget       quitbutton;
136  int          n;
137  Arg          args[8];
138
139  ProgramName = argv[0];
140
141  XtSetLanguageProc(NULL, NULL, NULL);
142  toplevel = XtOpenApplication(&app, "XMore",
143                               options, XtNumber(options),
144                               &argc, argv, fallback_resources,
145                               sessionShellWidgetClass, NULL, ZERO);
146
147  if (argc != 2)
148  {
149    printf("usage: %s [ x options ] filename\n", argv[0]);
150    exit(EXIT_FAILURE);
151  }
152
153  XtGetApplicationResources(toplevel, (XtPointer)&userOptions, resources,
154                            XtNumber(resources), NULL, 0);
155
156  XtAppAddActions(app, actions, XtNumber(actions));
157
158  viewFileName = argv[1];
159
160  form = XtCreateManagedWidget("form", formWidgetClass, toplevel, NULL, 0);
161
162  n = 0;
163  XtSetArg(args[n], XtNtype,             XawAsciiFile);            n++;
164  XtSetArg(args[n], XtNstring,           viewFileName);            n++;
165  XtSetArg(args[n], XtNwidth,            700);                     n++;
166  XtSetArg(args[n], XtNheight,           300);                     n++;
167  XtSetArg(args[n], XtNscrollHorizontal, XawtextScrollAlways);     n++;
168  XtSetArg(args[n], XtNscrollVertical,   XawtextScrollAlways);     n++;
169  XtSetArg(args[n], XtNfontSet,          userOptions.textfont);    n++;
170  text = XtCreateManagedWidget("text", asciiTextWidgetClass, form, args, n);
171
172  n = 0;
173  XtSetArg(args[n], XtNfromHoriz,       NULL);                   n++;
174  XtSetArg(args[n], XtNfromVert,        text);                   n++;
175  XtSetArg(args[n], XtNlabel,           "Quit");      n++;
176  quitbutton = XtCreateManagedWidget("quit", commandWidgetClass, form, args, n);
177  XtAddCallback(quitbutton, XtNcallback, quitXtProc, NULL);
178
179  XtRealizeWidget(toplevel);
180
181  XtAppMainLoop(app);
182
183  return EXIT_SUCCESS;
184}
185
186