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[text] Check text length in ::button-press-event

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Bug 1529 - Selection bound out of sync with an empty Text actor

When the user clicks on a Text actor the cursor position and the
selection bound are set using bytes_to_offset(); if the Text is
empty, this means placing them both to 0. Setting the selection
bound to 0 means that when the user inserts a character by typing
it into the Text, the selection will be [0,1]; this will select
the first character, which will then be overwritten when typing
a new character.

The Text actor should, instead, check if there are no contents
and set the cursor position and the selection bound to -1.

The clutter_text_set_selection_bound() method should also validate
the value passed, in case it's bigger than the text lenght, or
smaller than -1.
This commit is contained in:
Emmanuele Bassi 2009-03-30 07:54:42 +01:00
parent 0de0e869a9
commit a1a8193179
1 changed files with 33 additions and 11 deletions
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44
clutter/clutter-text.c
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@ -893,28 +893,45 @@ clutter_text_button_press (ClutterActor *actor,
{
ClutterText *self = CLUTTER_TEXT (actor);
ClutterTextPrivate *priv = self->priv;
gboolean res = FALSE;
ClutterUnit x, y;
gint index_;
/* we'll steal keyfocus if we do not have it */
clutter_actor_grab_key_focus (actor);
/* if the actor is empty we just reset everything and not
* set up the dragging of the selection since there's nothing
* to select
*/
if (priv->text == NULL || priv->text[0] == '\0')
{
clutter_text_set_cursor_position (self, -1);
clutter_text_set_selection_bound (self, -1);
return TRUE;
}
x = CLUTTER_UNITS_FROM_INT (event->x);
y = CLUTTER_UNITS_FROM_INT (event->y);
clutter_actor_transform_stage_point (actor, x, y, &x, &y);
res = clutter_actor_transform_stage_point (actor, x, y, &x, &y);
if (res)
{
index_ = clutter_text_coords_to_position (self,
CLUTTER_UNITS_TO_INT (x),
CLUTTER_UNITS_TO_INT (y));
index_ = clutter_text_coords_to_position (self,
CLUTTER_UNITS_TO_INT (x),
CLUTTER_UNITS_TO_INT (y));
clutter_text_set_cursor_position (self, bytes_to_offset (priv->text, index_));
clutter_text_set_selection_bound (self, bytes_to_offset (priv->text, index_));
clutter_text_set_cursor_position (self,
bytes_to_offset (priv->text, index_));
clutter_text_set_selection_bound (self,
bytes_to_offset (priv->text, index_));
}
/* grab the pointer */
priv->in_select_drag = TRUE;
clutter_grab_pointer (actor);
/* we'll steal keyfocus if we do not have it */
clutter_actor_grab_key_focus (actor);
return TRUE;
}
@ -2636,7 +2653,12 @@ clutter_text_set_selection_bound (ClutterText *self,
if (priv->selection_bound != selection_bound)
{
priv->selection_bound = selection_bound;
gint len = priv->n_chars;
if (selection_bound < 0 || selection_bound >= len)
priv->selection_bound = -1;
else
priv->selection_bound = selection_bound;
if (CLUTTER_ACTOR_IS_VISIBLE (self))
clutter_actor_queue_redraw (CLUTTER_ACTOR (self));