"Fossies" - the Fresh Open Source Software Archive

Member "xzgv-0.9.2/src/help.c" (3 Sep 2017, 3519 Bytes) of package /linux/misc/old/xzgv-0.9.2.tar.gz:

    1 /* xzgv - picture viewer for X, with file selector.
    2  * Copyright (C) 1999-2003 Russell Marks. See main.c for license details.
    3  *
    4  * help.c - help viewing, and about box.
    5  */
    6 
    7 #include <stdio.h>
    8 #include <string.h>
    9 #include <stdlib.h>
   10 #include <unistd.h>
   11 #include <sys/types.h>
   12 #include <sys/stat.h>
   13 #include <utime.h>
   14 #include <errno.h>
   15 #include <gtk/gtk.h>
   16 #include <gdk/gdkkeysyms.h>
   17 #include "backend.h"
   18 #include "main.h"
   19 #include "rcfile.h" /* for XZGV_VER */
   20 
   21 #include "help.h"
   22 
   23 
   24 void help_about(void)
   25 {
   26 GtkWidget *about_win;
   27 GtkWidget *vbox,*label,*action_tbl,*button;
   28 
   29 about_win=gtk_dialog_new();
   30 
   31 /* make a new vbox for the top part so we can get spacing more sane */
   32 vbox=gtk_vbox_new(FALSE,10);
   33 gtk_box_pack_start(GTK_BOX(GTK_DIALOG(about_win)->vbox),
   34                    vbox,TRUE,TRUE,0);
   35 gtk_widget_show(vbox);
   36 
   37 gtk_container_set_border_width(GTK_CONTAINER(vbox),5);
   38 gtk_container_set_border_width(
   39   GTK_CONTAINER(GTK_DIALOG(about_win)->action_area),2);
   40 
   41 gtk_window_set_title(GTK_WINDOW(about_win),"About xzgv");
   42 gtk_window_set_policy(GTK_WINDOW(about_win),FALSE,TRUE,TRUE);
   43 gtk_window_set_position(GTK_WINDOW(about_win),GTK_WIN_POS_CENTER);
   44 /* doesn't really need to be modal, but it'd be confusing if it weren't */
   45 gtk_window_set_modal(GTK_WINDOW(about_win),TRUE);
   46 
   47 label=gtk_label_new("xzgv " XZGV_VER " - picture viewer for X with file selector\n"
   48                     "Copyright (C) 1999-2005 Russell Marks\n"
   49                     "Copyright (C) 2007 Reuben Thomas\n"
   50                     "Homepage - http://sourceforge.net/projects/xzgv");
   51 gtk_box_pack_start(GTK_BOX(vbox),label,TRUE,TRUE,2);
   52 gtk_widget_show(label);
   53 
   54 /* add ok button */
   55 action_tbl=gtk_table_new(1,3,TRUE);
   56 gtk_box_pack_start(GTK_BOX(GTK_DIALOG(about_win)->action_area),
   57                    action_tbl,TRUE,TRUE,0);
   58 gtk_widget_show(action_tbl);
   59 
   60 button=gtk_button_new_with_label("Ok");
   61 gtk_table_attach_defaults(GTK_TABLE(action_tbl),button, 1,2, 0,1);
   62 gtk_signal_connect_object(GTK_OBJECT(button),"clicked",
   63                           GTK_SIGNAL_FUNC(gtk_widget_destroy),
   64                           GTK_OBJECT(about_win));
   65 gtk_widget_grab_focus(button);
   66 gtk_widget_show(button);
   67 
   68 /* also allow escs (even from main window!) */
   69 gtk_widget_add_accelerator(button,"clicked",mainwin_accel_group,
   70                            GDK_Escape,0,0);
   71 
   72 
   73 gtk_widget_show(about_win);
   74 }
   75 
   76 
   77 /* currently, this runs info in an xterm on the specified node.
   78  * It's better than nothing, but it wouldn't hurt to have something
   79  * nicer... :-)
   80  *
   81  * And don't worry, this *will* be configurable in future (XXX).
   82  */
   83 void help_run(char *node)
   84 {
   85 char *cmd_start="xterm -e info '(xzgv)";
   86 char *cmd_end="' &";
   87 char *buf;
   88 
   89 if((buf=malloc(strlen(cmd_start)+strlen(node)+strlen(cmd_end)+1))==NULL)
   90   {
   91   /* if we're *that* low on memory, then error_dialog() will fail too,
   92    * so just return.
   93    */
   94   return;
   95   }
   96 
   97 strcpy(buf,cmd_start);
   98 strcat(buf,node);
   99 strcat(buf,cmd_end);
  100 
  101 /* XXX it turns out the error check is useless, as the `&' leads to
  102  * starting another shell which is the one to give any errors. The
  103  * one we directly run here is always happy, error or not. :-/
  104  * Looks like I'll need the full fork/exec junk, oh well...
  105  */
  106 if(system(buf)!=0)
  107   {
  108   char *msg="Couldn't run help command:\n";
  109   char *buf2;
  110   
  111   if((buf2=malloc(strlen(msg)+strlen(buf)+1))==NULL)
  112     error_dialog("xzgv error",msg);
  113   else
  114     {
  115     strcpy(buf2,msg);
  116     strcat(buf2,buf);
  117     error_dialog("xzgv error",buf2);
  118     free(buf2);
  119     }
  120 
  121   free(buf);
  122   return;
  123   }
  124 
  125 free(buf);
  126 }