[Gtk2forpascal-devel] Problem about gtkhtml-2 solved!

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Hi, Mattias

  Today I solved the problem about gtkhtml-2
programing with
gtk2forpascal.
  First, you should download
"gtkhtml2-2.0.1-3.i386.rpm" and
"gtkhtml2-devel-2.0.1-3.i386.rpm" from
www.rpmfind.net. The
first one contains two shared libs. The second one
contains
many header files and "libgtkhtml-2.a" and
"libgtkhtml-2.so",
and most important, it contains a file:
"/usr/lib/pkgconfig/libgtkhtml-2.0.pc"
You can also download "gtkhtml2-2.0.1-3.src.rpm" to
see its
source. This one is more easier to compile than
gtkhtml-1.1.4
.tar.gz. From the source you will find that there's
really no
gtk_html_new() but a
html_view_new()+html_document_new(). So
the structure of "view+document" is very like the
structure
"view+buffer" in gtk2.

Now I changed the declaration from:
>>>>>
const
  gtkhtmllib = libgtkhtml-2.so';
<<<<<
To:
>>>>>
const
  gtkhtmllib = '';
<<<<<

And use the following shell script to compile the
test.pp:
(command: ./make.sh test.pp)
>>>>> make.sh
#!/bin/bash
make_linker_script () {
  LibPath=`pkg-config libgtkhtml-2.0 --libs-only-L |
sed -e 's/-L//g'` 
  Libs=`pkg-config libgtkhtml-2.0 --libs-only-l`

  rm -f gtk2.link.res

  for SinglePath in $LibPath
  do
    printf "SEARCH_DIR($SinglePath)\n" >>
gtk2.link.res
  done
  printf "INPUT(\n$Libs\n)" >> gtk2.link.res
}

DynamicOption="-XD
-k-dynamic-linker=/lib/ld-linux.so.2 -kgtk2.link.res"

# UnitPath="../gtk2/" -----> Note: Here I move *.o and
*.ppu of gtk2forpascal
#   to /usr/lib/fpc/1.0.7/units/linux/gtk2, so they
can be automatically
#   found.

make_linker_script

ppc386 -g -Fu$UnitPath $DynamicOption $@

rm -f gtk2.link.res
<<<<<

The test.pp file is as follows (very ugly and
unmature):
>>>>>
program test;

{$H+}
{$mode objfpc}

uses
  glib2, gtk2, gdk2;

const
  gtkhtmllib = '';//libgtkhtml-2.so';

type
  PHtmlDocument = ^THtmlDocument;
  THtmlDocument = record
    parent_instance: TGObject;
  end;//THtmlDocument

  PHtmlView = ^THtmlView;
  THtmlView = record
    parent: TGtkLayout;
  end;//THtmlView

  function html_document_new():PHtmlDocument;cdecl;
external gtkhtmllib;
  procedure html_view_zoom_in(view: PHtmlView);cdecl;
external gtkhtmllib;
  function html_view_new:PGtkWidget;cdecl; external
gtkhtmllib;
  procedure html_view_set_document(view: PHtmlView;
document: PHtmlDocument);cdecl; external gtkhtmllib;
  function html_document_open_stream(document:
PHtmlDocument;mime_type: pgchar):gboolean;cdecl;
external gtkhtmllib;
  procedure html_document_write_stream(document:
PHtmlDocument;buffer: pgchar; len: gint);cdecl;
external gtkhtmllib;
  procedure html_document_close_stream(document:
PHtmlDocument);cdecl; external gtkhtmllib;

//===================
var
  window : PGtkWidget;
  sw     : PGtkWidget;
  html   : PGtkWidget;
  document: PHtmlDocument;

procedure destroy (window: PGtkWidget; data:
gpointer); cdecl;
begin
   gtk_main_quit();
end;//destroy

var
  s:String;
begin
  gtk_init(@argc,@argv);

  window:=gtk_window_new(GTK_WINDOW_TOPLEVEL);
  gtk_widget_set_size_request(window,500,400);

gtk_window_set_position(PGtkWindow(window),GTK_WIN_POS_CENTER_ALWAYS);
  gtk_window_set_title(PGtkWindow(window),'Test');

g_signal_connect(window,'destroy',TGCallback(@destroy),NULL);

  sw:=gtk_scrolled_window_new(NULL,NULL);
  gtk_widget_show(sw);
  gtk_container_add(PGtkContainer(window),sw);

  document := html_document_new();
  html:=html_view_new();
  gtk_widget_show(html);

gtk_scrolled_window_add_with_viewport(PGtkScrolledWindow(sw),html);
  s:='<html><head><title>Hello,
World!</title></head>'+
     '<body text="#000000" bgcolor="#FFFFCC">'+
     '<center><h1><font size=7>Hello,
world!</font></h1></center>'+
     '</body></html>';
  html_document_open_stream(document,'text/html');

html_document_write_stream(document,PChar(s),length(s));
  html_document_close_stream(document);
  html_view_set_document(PHtmlView(html), document);

  gtk_widget_show(window);
  gtk_main();
end.//program test
<<<<<

Mattias, I write an interface for gtkhtml to
gtk2forpascal, but it's
a very simple one. It has only four widgets:
THtmlView, THtmlDocument,
THtmlStream and THtmlStreamBuffer. In the first two
widgets, some fields
are removed. So perhaps some important functionalities
are not included.
The reason why I remove them is because they use
functions of libxml,
I have no time to port so many packages. It remains to
be further work.
At present, I don't know how to show a picture in the
htmlview yet.

Mattias, Do you think I can present those sources now?
if so, I will
send you those files.

Yours,
mili

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