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Based on http://sources.debian.net/patches/sgt-puzzles/20160429.b31155b-1/202_online-help.diff/
Simply opens HTML help files with xdg-open
Author: Ben Hutchings <ben@decadent.org.uk>
Description: Add HTML-based online help
This works along the same lines as the Windows implementation,
though we have to try a bit harder to find a help browser.
--- a/gtk.c 2016-12-08 07:53:06.812409184 -0500
+++ b/gtk.c 2016-12-08 07:58:06.426415886 -0500
@@ -2,6 +2,10 @@
* gtk.c: GTK front end for my puzzle collection.
*/
+#ifndef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE 1 /* for PATH_MAX */
+#endif
+
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
@@ -10,6 +14,9 @@
#include <string.h>
#include <errno.h>
#include <math.h>
+#include <limits.h>
+#include <unistd.h>
+#include <locale.h>
#include <sys/time.h>
#include <sys/resource.h>
@@ -2270,6 +2277,37 @@
resize_fe(fe);
}
+static void show_help(frontend *fe, const char *topic)
+{
+ char path[PATH_MAX + 1];
+
+ sprintf(path, "%s/%s.html", HTMLDIR, topic);
+ if (access(path, R_OK) != 0) {
+ error_box(fe->window, "Help file could not be found");
+ return;
+ }
+
+ const char *argv[3];
+
+ argv[0] = "xdg-open";
+ argv[1] = path;
+ argv[2] = NULL;
+ if (! g_spawn_async(NULL, (char **)argv, NULL,
+ G_SPAWN_SEARCH_PATH,
+ NULL, NULL, NULL, NULL))
+ error_box(fe->window, "Failed to open help file");
+}
+
+static void menu_help_contents_event(GtkMenuItem *menuitem, gpointer data)
+{
+ show_help((frontend *)data, "index");
+}
+
+static void menu_help_specific_event(GtkMenuItem *menuitem, gpointer data)
+{
+ show_help((frontend *)data, thegame.htmlhelp_topic);
+}
+
static void menu_about_event(GtkMenuItem *menuitem, gpointer data)
{
frontend *fe = (frontend *)data;
@@ -2590,6 +2628,25 @@
menu = gtk_menu_new();
gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuitem), menu);
+ menuitem = gtk_menu_item_new_with_label("Contents");
+ gtk_container_add(GTK_CONTAINER(menu), menuitem);
+ g_signal_connect(G_OBJECT(menuitem), "activate",
+ G_CALLBACK(menu_help_contents_event), fe);
+ gtk_widget_show(menuitem);
+
+ if (thegame.htmlhelp_topic) {
+ char *item;
+ assert(thegame.name);
+ item = snewn(9+strlen(thegame.name), char); /*ick*/
+ sprintf(item, "Help on %s", thegame.name);
+ menuitem = gtk_menu_item_new_with_label(item);
+ sfree(item);
+ gtk_container_add(GTK_CONTAINER(menu), menuitem);
+ g_signal_connect(G_OBJECT(menuitem), "activate",
+ G_CALLBACK(menu_help_specific_event), fe);
+ gtk_widget_show(menuitem);
+ }
+
menuitem = gtk_menu_item_new_with_label("About");
gtk_container_add(GTK_CONTAINER(menu), menuitem);
g_signal_connect(G_OBJECT(menuitem), "activate",
--- a/Recipe
+++ b/Recipe
@@ -95,6 +95,7 @@ Puzzles.dmg: Puzzles
!begin am
bin_PROGRAMS = $(GAMES)
+GTK_CFLAGS += -DHTMLDIR="\"$(htmldir)\""
!end
!begin am_begin
GAMES =
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