On Tue, 2002-05-28 at 07:45, Dongho Shin wrote:
> Here is a sample test program which shows the problem.
[snip]
The problem is that GtkTextView doesn't send motion-notify events to the
tags at all. Whether this is on purpose or not, I'm not sure...
The solution is to bind the "motion-notify" signal of the TextView
itself, then proxy it to any tags under the mouse, or just handle the
cursor-flipping from inside the textview's signal (which is a faster and
better solution, as you aren't wasting time for any tags you don't want
to).
As I said earlier, I've done this, and it works, though it spits out a
lot of g_warning() msgs:
(gnomechat:22654): Gtk-CRITICAL **: file gtktextiter.c: line 3525
(gtk_text_iter_set_line_offset): assertion `char_on_line <=
chars_in_line' failed
I don't know why exactly...
Anyways, here's the code:
static gboolean
text_view_motion_notify_event (GtkWidget * widget, GdkEventMotion
*event, gpointer data)
{
static GdkCursor *hand_cursor = NULL;
static GdkCursor *ibar_cursor = NULL;
static GtkTextTag *tag = NULL;
GtkTextView *view = GTK_TEXT_VIEW (widget);
GtkTextWindowType type;
GtkTextIter iter;
GdkWindow *win;
gint x,
y,
buf_x,
buf_y;
type = gtk_text_view_get_window_type (view, event->window);
if (type != GTK_TEXT_WINDOW_TEXT)
return FALSE;
/* Get where the pointer really is */
win = gtk_text_view_get_window (view, type);
gdk_window_get_pointer (win, &x, &y, NULL);
/* Get the iter where the cursor is at */
gtk_text_view_window_to_buffer_coords (view, type, x, y, &buf_x,
&buf_y);
gtk_text_view_get_iter_at_location (view, &iter, buf_x, buf_y);
/* Get the tag we're interested in -- I use a static var for
this & the cursors to speed things up slightly. */
if (!tag)
tag = gtk_text_tag_table_lookup (table,
style_names[VIEWER_STYLE_LINK]);
if (!hand_cursor)
hand_cursor = gdk_cursor_new (GDK_HAND2);
if (!ibar_cursor)
ibar_cursor = gdk_cursor_new (GDK_XTERM);
if (gtk_text_iter_has_tag (&iter, tag))
{
gdk_window_set_cursor (win, hand_cursor);
}
else
{
gdk_window_set_cursor (win, ibar_cursor);
}
return FALSE;
}
Peace,
Jim Cape
http://ignore-your.tv/
"No cause, no God, no abstract idea can justify the mass
slaughter of innocents."
-- Edward Said
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