[Gambas-devel] gb.gtk 050305

[Daniel Campos]

Hi:

gb.gtk 050305:

-> "Plugin" widget changed its name to "Plugger".

-> "Grab" method from Widgets and Desktop is working now.

-> Added "ScrollView" widget, partially working.

-> Added a "TrayIcon" class which allows to add an icon in the
notification area, comonly called "System Tray" on win$ systems.
This has been written using the freedesktop.org specifications, so
it works when using GNOME, KDE, XFCE and may be other
desktops/window managers.

The main part of this class is X-Windows code (gtrayicon.cpp),
so it should be ported to QT using the QtXEmbedContainer 
<http://doc.trolltech.com/solutions/qtxembed/qtxembedcontainer.html> and
a QPixmap. This feature, of course is just for X-WIndows systems,
but it is sure it can be ported to Win$ using the Systray API from
that system, or may be it can work directly with the rootless X server 
usually
used with Cygwin. (By the way, once I had to embeed a window from a
process into another, using Win$ and VB, and I was able to do it using API
calls, so the "Plugger" widget should be portable too). About 
framebuffer implementations,
just a simple application can be run at once in the framebuffer, so 
"Plugger" has no
sense there, and the notification area can be just a "stub". May  be 
DirectFB will allow
to run multiple applications using the Fusion API, but GTK+ for DirectFB 
is very
inmature now, even if a guy decided recently to restart the work in the 
gdk-directfb,
so it is not a problem by now, and I suppose they will offer these 
features in the future.
(I don't know anything about QTopia)

Note that this icon is just an icon into the notification area, which is 
quite different
from KDE or GNOME "applets". Theorically, any kind of widget could
be added in the notification area, however, an image is the only widget
that really works for all notification area implementations 
(KDE,GNOME,XFCE...),
and trying to add windows, buttons and other stuff causes strange problems.
However, it makes no sense to add a lot of widgets in that small area: 
programmers usually
want to place just an icon there.

This Systray class emits the "MouseDown","MouseUp" and "Menu" signals, so
you can easily popup menus when clicked. I send a little example.

There's also a "TrayIcons" class which enumerates all Tray icons managed 
by the
application.

I think it is very simple, following the "Gambas" way: two properties 
"Picture" for
the icon, and "Text"/"ToolTip" for the tip, and three events, thats all.

The application can work normally even if there's notification area: the 
icon is simply
not shown.

This is the last "new feature" I will add to gb.gtk, prior to complete 
all the rest of
widgets (I mean at least the skeleton of the widgets), and release the 
first alpha
gb.gtk version. 

-> Benoît: I have problems trying to manage menus with gb.gtk and the 
Gambas IDE 1.9.3,
I think i've implemented all needed to manage the menus, but it seems 
there's any
kind of bug in the IDE that causes the problem when gb.qt is not the 
graphical library used.

Regards,

D. Campos

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