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[text] Different selection modes with multiple clicks
ClutterText should offer multiple selection modes depending on the number of pointer clicks. Following the GTK+ conventions: - double click selects the current word - triple click selects the current line
This commit is contained in:
Emmanuele Bassi
parent
f6d938a0db
commit
02ea81ce02
@ -887,6 +887,157 @@ cursor_paint (ClutterText *self)
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}
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}
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static gint
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clutter_text_move_word_backward (ClutterText *self,
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gint start)
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{
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ClutterTextPrivate *priv = self->priv;
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gint retval = start;
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if (priv->text && start > 0)
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{
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PangoLayout *layout = clutter_text_get_layout (self);
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PangoLogAttr *log_attrs = NULL;
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gint n_attrs = 0;
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pango_layout_get_log_attrs (layout, &log_attrs, &n_attrs);
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retval = start - 1;
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while (retval > 0 && !log_attrs[retval].is_word_start)
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retval -= 1;
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g_free (log_attrs);
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}
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return retval;
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}
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static gint
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clutter_text_move_word_forward (ClutterText *self,
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gint start)
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{
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ClutterTextPrivate *priv = self->priv;
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gint retval = start;
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if (priv->text && start > 0)
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{
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PangoLayout *layout = clutter_text_get_layout (self);
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PangoLogAttr *log_attrs = NULL;
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gint n_attrs = 0;
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pango_layout_get_log_attrs (layout, &log_attrs, &n_attrs);
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retval = start - 1;
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while (retval > 0 && !log_attrs[retval].is_word_end)
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retval += 1;
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g_free (log_attrs);
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}
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return retval;
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}
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static gint
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clutter_text_move_line_start (ClutterText *self,
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gint start)
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{
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ClutterTextPrivate *priv = self->priv;
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PangoLayoutLine *layout_line;
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PangoLayout *layout;
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gint line_no;
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gint index_;
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gint position;
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layout = clutter_text_get_layout (self);
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if (start == 0)
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index_ = 0;
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else
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index_ = offset_to_bytes (priv->text, start);
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pango_layout_index_to_line_x (layout, index_,
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0,
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&line_no, NULL);
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layout_line = pango_layout_get_line_readonly (layout, line_no);
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if (!layout_line)
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return FALSE;
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pango_layout_line_x_to_index (layout_line, 0, &index_, NULL);
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position = bytes_to_offset (priv->text, index_);
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return position;
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}
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static gint
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clutter_text_move_line_end (ClutterText *self,
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gint start)
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{
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ClutterTextPrivate *priv = self->priv;
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PangoLayoutLine *layout_line;
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PangoLayout *layout;
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gint line_no;
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gint index_;
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gint trailing;
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gint position;
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layout = clutter_text_get_layout (self);
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if (start == 0)
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index_ = 0;
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else
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index_ = offset_to_bytes (priv->text, priv->position);
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pango_layout_index_to_line_x (layout, index_,
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0,
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&line_no, NULL);
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layout_line = pango_layout_get_line_readonly (layout, line_no);
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if (!layout_line)
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return FALSE;
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pango_layout_line_x_to_index (layout_line, G_MAXINT, &index_, &trailing);
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index_ += trailing;
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position = bytes_to_offset (priv->text, index_);
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return position;
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}
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static void
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clutter_text_select_word (ClutterText *self)
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{
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gint cursor_pos = self->priv->position;
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gint start_pos, end_pos;
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start_pos = clutter_text_move_word_backward (self, cursor_pos);
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end_pos = clutter_text_move_word_forward (self, cursor_pos);
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clutter_text_set_selection (self, start_pos, end_pos);
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}
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static void
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clutter_text_select_line (ClutterText *self)
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{
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ClutterTextPrivate *priv = self->priv;
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gint cursor_pos = priv->position;
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gint start_pos, end_pos;
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if (priv->single_line_mode)
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{
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start_pos = 0;
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end_pos = -1;
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}
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else
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{
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start_pos = clutter_text_move_line_start (self, cursor_pos);
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end_pos = clutter_text_move_line_end (self, cursor_pos);
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}
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clutter_text_set_selection (self, start_pos, end_pos);
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}
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static gboolean
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clutter_text_button_press (ClutterActor *actor,
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ClutterButtonEvent *event)
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@ -918,14 +1069,34 @@ clutter_text_button_press (ClutterActor *actor,
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res = clutter_actor_transform_stage_point (actor, x, y, &x, &y);
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if (res)
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{
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gint offset;
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index_ = clutter_text_coords_to_position (self,
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CLUTTER_UNITS_TO_INT (x),
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CLUTTER_UNITS_TO_INT (y));
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clutter_text_set_cursor_position (self,
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bytes_to_offset (priv->text, index_));
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clutter_text_set_selection_bound (self,
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bytes_to_offset (priv->text, index_));
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offset = bytes_to_offset (priv->text, index_);
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/* what we select depends on the number of button clicks we
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* receive:
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*
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* 1: just position the cursor and the selection
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* 2: select the current word
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* 3: select the contents of the whole actor
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*/
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if (event->click_count == 1)
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{
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clutter_text_set_cursor_position (self, offset);
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clutter_text_set_selection_bound (self, offset);
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}
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else if (event->click_count == 2)
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{
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clutter_text_select_word (self);
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}
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else if (event->click_count == 3)
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{
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clutter_text_select_line (self);
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}
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}
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/* grab the pointer */
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@ -1259,7 +1430,7 @@ clutter_text_real_move_left (ClutterText *self,
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len = priv->n_chars;
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if (pos != 0 && len !=0)
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if (pos != 0 && len != 0)
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{
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if (pos == -1)
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clutter_text_set_cursor_position (self, len - 1);
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@ -1406,30 +1577,9 @@ clutter_text_real_line_start (ClutterText *self,
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ClutterModifierType modifiers)
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{
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ClutterTextPrivate *priv = self->priv;
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PangoLayoutLine *layout_line;
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PangoLayout *layout;
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gint line_no;
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gint index_;
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gint position;
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layout = clutter_text_get_layout (self);
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if (priv->position == 0)
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index_ = 0;
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else
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index_ = offset_to_bytes (priv->text, priv->position);
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pango_layout_index_to_line_x (layout, index_,
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0,
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&line_no, NULL);
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layout_line = pango_layout_get_line_readonly (layout, line_no);
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if (!layout_line)
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return FALSE;
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pango_layout_line_x_to_index (layout_line, 0, &index_, NULL);
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position = bytes_to_offset (priv->text, index_);
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position = clutter_text_move_line_start (self, priv->position);
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clutter_text_set_cursor_position (self, position);
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if (!(priv->selectable && (modifiers & CLUTTER_SHIFT_MASK)))
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@ -1445,33 +1595,9 @@ clutter_text_real_line_end (ClutterText *self,
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ClutterModifierType modifiers)
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{
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ClutterTextPrivate *priv = self->priv;
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PangoLayoutLine *layout_line;
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PangoLayout *layout;
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gint line_no;
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gint index_;
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gint trailing;
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gint position;
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layout = clutter_text_get_layout (self);
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if (priv->position == 0)
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index_ = 0;
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else
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index_ = offset_to_bytes (priv->text, priv->position);
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pango_layout_index_to_line_x (layout, index_,
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0,
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&line_no, NULL);
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layout_line = pango_layout_get_line_readonly (layout, line_no);
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if (!layout_line)
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return FALSE;
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pango_layout_line_x_to_index (layout_line, G_MAXINT, &index_, &trailing);
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index_ += trailing;
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position = bytes_to_offset (priv->text, index_);
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position = clutter_text_move_line_end (self, priv->position);
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clutter_text_set_cursor_position (self, position);
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if (!(priv->selectable && (modifiers & CLUTTER_SHIFT_MASK)))
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