Tristan Van Berkom wrote:
> Paul Pogonyshev wrote:
> [...]
>
> >But I have many areas, the widget is much like two-dimensional grid.
> >There can easily be like 100 areas. Think of GtkTreeView with many
> >columns.
> >
> >Besides, it seems that GtkTooltips works only with widgets. So, I'd
> >have to wrap each `area' in a separate widget which is cumbersome.
> >The widget is scrollable and on overall, there can be thousands of
> >those areas. This means that either the overhead would be really bad
> >or I'd have to write some evil code to create widgets for only those
> >areas that are visible in the viewport, gah...
> >
> >
> Its not that bad, I'm sure many applications have the same need;
> just install a handler for "motion-notify-event" (make sure that
> your widget has been realized with the correct event mask)
> and call gtk_tooltips_set_tip() whenever the tooltip should change.
You are probably right, but I haven't been able to make the tips show
up :( I didn't even manage to add tooltips to a GtkTextView (not even
after gtk_widget_add_events (text_view, GDK_POINTER_MOTION_MASK) and
unwrapping it from GtkScrolledWindow.)
My widget uses two windows, but the `motion-notify-event' signal does
get emited on one of them, my handler is invoked. But the tooltips
just don't appear :(
Window setup code is below. Any ideas?
Paul
static void
gtk_sgf_tree_view_realize (GtkWidget *widget)
{
GtkSgfTreeView *view = GTK_SGF_TREE_VIEW (widget);
GdkWindowAttr attributes;
const gint attributes_mask = (GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL
| GDK_WA_COLORMAP);
const gint event_mask = (GDK_EXPOSURE_MASK
| GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK
| GDK_POINTER_MOTION_MASK);
if (!view->hadjustment || !view->vadjustment)
gtk_sgf_tree_view_set_scroll_adjustments (view, NULL, NULL);
if (view->current_tree) {
sgf_game_tree_get_map_dimensions (view->current_tree,
&view->map_width, &view->map_height);
update_view_port (view);
}
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
attributes.event_mask = 0;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.window_type = GDK_WINDOW_CHILD;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (widget->window, view);
gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
attributes.event_mask = gtk_widget_get_events (widget) | event_mask;
attributes.x = - view->hadjustment->value;
attributes.y = - view->vadjustment->value;
attributes.width = view->hadjustment->upper;
attributes.height = view->vadjustment->upper;
view->output_window = gdk_window_new (widget->window,
&attributes, attributes_mask);
gdk_window_set_user_data (view->output_window, view);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, view->output_window,
GTK_STATE_NORMAL);
gdk_window_show (view->output_window);
GTK_WIDGET_CLASS (parent_class)->realize (widget);
}
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