Good morning
all,
a
previous request in earlier e-mails from me was that once the user has
inserted an object into the canvas there is no difference between the
connections but the visual position. For some plug-ins would be interesting that
when the user places the pointer over a connection a brief description or
keyword appears showing information. I have found one option for dia developers
to be considered in following versions. Perhaps a different alternative would be
much better. Anyway, I would like to ask you to include this feature in
following versions.
The following solution is based on dia0.95-pre-3 and I have tested it works. The
structure ConnectionPoint in file
connection.h has a field gchar* name which is not
commonly used. The idea is that the plug-in fills that name and it is showed to
the user in the status bar when the pointer is closed to the connection. For
that purpose a few modifications should be done in file disp_callbacks.c. In
function gint ddisplay_canvas_events (GtkWidget *canvas,
GdkEvent *event, DDisplay *ddisp) three new variables have
to be declared:
ConnectionPoint *conn;
GtkStatusbar *statusbar;
guint context_id;
GtkStatusbar *statusbar;
guint context_id;
and the event for
the mouse motion within this function woul be like
this:
case
GDK_MOTION_NOTIFY:
/* get the pointer position */
gdk_window_get_pointer (canvas->window, &tx, &ty, &tmask);
/* get the pointer position */
gdk_window_get_pointer (canvas->window, &tx, &ty, &tmask);
/******************************************************************************************
BEGIN
OF ADDED CODE
******************************************************************************************/
/*Sends information to status bar if near to connection*/
/*Sends information to status bar if near to connection*/
statusbar = GTK_STATUSBAR
(ddisp->modified_status);
context_id = gtk_statusbar_get_context_id (statusbar, "CONN");
ddisplay_untransform_coords(ddisp, tx, ty, &middle.x, &middle.y);
if((conn=object_find_connectpoint_display(ddisp, &middle,NULL, FALSE))){
gtk_statusbar_pop (statusbar, context_id);
if (conn->name)
gtk_statusbar_push (statusbar, context_id, conn->name);
}else
gtk_statusbar_pop (statusbar, context_id);
context_id = gtk_statusbar_get_context_id (statusbar, "CONN");
ddisplay_untransform_coords(ddisp, tx, ty, &middle.x, &middle.y);
if((conn=object_find_connectpoint_display(ddisp, &middle,NULL, FALSE))){
gtk_statusbar_pop (statusbar, context_id);
if (conn->name)
gtk_statusbar_push (statusbar, context_id, conn->name);
}else
gtk_statusbar_pop (statusbar, context_id);
/******************************************************************************************
END
OF ADDED CODE
******************************************************************************************/
mevent = (GdkEventMotion *) event;
state = mevent->state;
mevent = (GdkEventMotion *) event;
state = mevent->state;
if
(mevent->is_hint) {
mevent->x = tx;
mevent->y = ty;
mevent->state = tmask;
mevent->is_hint = FALSE;
}
if (transient_tool && (*transient_tool->motion_func))
(*transient_tool->motion_func) (transient_tool, mevent, ddisp);
else if (active_tool->motion_func)
(*active_tool->motion_func) (active_tool, mevent, ddisp);
break;
mevent->x = tx;
mevent->y = ty;
mevent->state = tmask;
mevent->is_hint = FALSE;
}
if (transient_tool && (*transient_tool->motion_func))
(*transient_tool->motion_func) (transient_tool, mevent, ddisp);
else if (active_tool->motion_func)
(*active_tool->motion_func) (active_tool, mevent, ddisp);
break;
Looking forward to
an answer to this proposal.
Best
regards
________________________________________________
Saludos/Regards
Oscar Córdoba Muñoz
ITP Performance Team
Tel +34 91 2079437
Fax +34 91
6764676
________________________________________________
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