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[text] Emit ::cursor-event only on changes

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The documentation for the ::cursor-event says that the signal
is emitted only when the cursor position changes. Right now it
is being emitted every time we ensure the cursor position during
the Text paint sequence.

The clutter_text_ensure_cursor_position() function should check
whether the stored cursor position has changed since the last
paint, and emit the ::cursor-event signal only when there has
been a change.
This commit is contained in:
Emmanuele Bassi 2009-04-21 12:06:14 +01:00
parent 4518cf140c
commit 1c42e6334e
1 changed files with 18 additions and 5 deletions
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23
clutter/clutter-text.c
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@ -536,18 +536,31 @@ clutter_text_ensure_cursor_position (ClutterText *self)
{
ClutterTextPrivate *priv = self->priv;
ClutterUnit x, y, cursor_height;
ClutterGeometry cursor_pos = { 0, };
gboolean x_changed, y_changed;
gboolean width_changed, height_changed;
x = y = cursor_height = 0;
clutter_text_position_to_coords (self, priv->position,
&x, &y,
&cursor_height);
priv->cursor_pos.x = CLUTTER_UNITS_TO_DEVICE (x);
priv->cursor_pos.y = CLUTTER_UNITS_TO_DEVICE (y);
priv->cursor_pos.width = priv->cursor_size;
priv->cursor_pos.height = CLUTTER_UNITS_TO_DEVICE (cursor_height) - 2;
cursor_pos.x = CLUTTER_UNITS_TO_DEVICE (x);
cursor_pos.y = CLUTTER_UNITS_TO_DEVICE (y);
cursor_pos.width = priv->cursor_size;
cursor_pos.height = CLUTTER_UNITS_TO_DEVICE (cursor_height) - 2;
g_signal_emit (self, text_signals[CURSOR_EVENT], 0, &priv->cursor_pos);
x_changed = priv->cursor_pos.x != cursor_pos.x;
y_changed = priv->cursor_pos.y != cursor_pos.y;
width_changed = priv->cursor_pos.width != cursor_pos.width;
height_changed = priv->cursor_pos.height != cursor_pos.height;
if (x_changed || y_changed || width_changed || height_changed)
{
priv->cursor_pos = cursor_pos;
g_signal_emit (self, text_signals[CURSOR_EVENT], 0, &priv->cursor_pos);
}
}
static gboolean