e_text_command

static voide_text_command(ETextEventProcessor *tep, ETextEventProcessorCommand *command, gpointer data){	EText *text = E_TEXT(data);	gboolean scroll = TRUE;	gboolean use_start = TRUE;	switch (command->action) {	case E_TEP_MOVE:		text->selection_start = _get_position(text, command);		text->selection_end = text->selection_start;		if (text->timer) {			g_timer_reset(text->timer);		}		use_start = TRUE;		break;	case E_TEP_SELECT:		text->selection_start = e_text_model_validate_position (text->model, text->selection_start); /* paranoia */		text->selection_end = _get_position(text, command);				e_text_update_primary_selection (text);		use_start = FALSE;		break;	case E_TEP_DELETE:		if (text->selection_end == text->selection_start) {			text->selection_end = _get_position(text, command);		}		e_text_delete_selection(text);		if (text->timer) {			g_timer_reset(text->timer);		}		use_start = FALSE;		break;	case E_TEP_INSERT:		if (g_utf8_validate (command->string, command->value, NULL)) {			if (text->selection_end != text->selection_start) {				e_text_delete_selection(text);			}			e_text_insert(text, command->string);			if (text->timer) {				g_timer_reset(text->timer);			}		}		break;	case E_TEP_COPY:		e_text_copy_clipboard (text);		if (text->timer) {			g_timer_reset(text->timer);		}		scroll = FALSE;		break;	case E_TEP_PASTE:		e_text_paste (text, GDK_NONE);		if (text->timer) {			g_timer_reset(text->timer);		}		break;	case E_TEP_GET_SELECTION:		e_text_paste (text, GDK_SELECTION_PRIMARY);		break;	case E_TEP_ACTIVATE:		g_signal_emit (text, e_text_signals[E_TEXT_ACTIVATE], 0);		if (text->timer) {			g_timer_reset(text->timer);		}		break;	case E_TEP_SET_SELECT_BY_WORD:		text->select_by_word = command->value;		break;	case E_TEP_GRAB:		e_canvas_item_grab (E_CANVAS (GNOME_CANVAS_ITEM(text)->canvas),				    GNOME_CANVAS_ITEM(text), 				    GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK,				    text->i_cursor,				    command->time,				    NULL,				    NULL);		scroll = FALSE;		break;	case E_TEP_UNGRAB:		e_canvas_item_ungrab (E_CANVAS (GNOME_CANVAS_ITEM(text)->canvas),				      GNOME_CANVAS_ITEM(text),				      command->time);		scroll = FALSE;		break;	case E_TEP_CAPS:		if (text->selection_start == text->selection_end) {			capitalize (text, text->selection_start, next_word (text, text->selection_start), command->value);		} else {			int selection_start = MIN (text->selection_start, text->selection_end);			int selection_end = MAX (text->selection_start, text->selection_end);			capitalize (text, selection_start, selection_end, command->value);		}		break;	case E_TEP_NOP:		scroll = FALSE;		break;	}	/* it's possible to get here without ever having been realized	   by our canvas (if the e-text started completely obscured.)	   so let's create our layout object if we don't already have	   one. */	if (!text->layout)		create_layout (text);	if (scroll && !text->button_down) {		/* XXX do we really need the @trailing logic here?  if		   we don't we can scrap the loop and just use		   pango_layout_index_to_pos */		PangoLayoutLine *cur_line = NULL;		int selection_index;		PangoLayoutIter *iter = pango_layout_get_iter (text->layout);		selection_index = use_start ? text->selection_start : text->selection_end;		/* convert to a byte index */		selection_index = g_utf8_offset_to_pointer (text->text, selection_index) - text->text;		g_print("%s/%d -->> selection_index = %d\n", __FILE__, __LINE__, selection_index);				do {			PangoLayoutLine *line = pango_layout_iter_get_line (iter);			if (selection_index >= line->start_index && selection_index <= line->start_index + line->length) {				/* found the line with the start of the selection */				cur_line = line;				break;			}		} while (pango_layout_iter_next_line (iter));		if (cur_line) {			int xpos, ypos;			double clip_width, clip_height;			/* gboolean trailing = FALSE; */			PangoRectangle pango_pos;			if (selection_index > 0 && selection_index == cur_line->start_index + cur_line->length) {				selection_index--;				/* trailing = TRUE; */			}			pango_layout_index_to_pos (text->layout, selection_index, &pango_pos);			pango_pos.x = PANGO_PIXELS (pango_pos.x);			pango_pos.y = PANGO_PIXELS (pango_pos.y);			pango_pos.width = (pango_pos.width + PANGO_SCALE / 2) / PANGO_SCALE;			pango_pos.height = (pango_pos.height + PANGO_SCALE / 2) / PANGO_SCALE;			/* scroll for X */			xpos = pango_pos.x; /* + (trailing ? 0 : pango_pos.width);*/			if (xpos + 2 < text->xofs_edit) {				text->xofs_edit = xpos;			}						clip_width = text->clip_width;			if (clip_width >= 0 && text->draw_borders) {				clip_width -= 6;				if (clip_width < 0)					clip_width = 0;			}                                                                                                			if (xpos + pango_pos.width - clip_width > text->xofs_edit) {				text->xofs_edit = xpos + pango_pos.width - clip_width;			}			/* scroll for Y */			if (pango_pos.y + 2 < text->yofs_edit) {				ypos = pango_pos.y;				text->yofs_edit = ypos;			}			else {				ypos = pango_pos.y + pango_pos.height;			}			if ( text->clip_height < 0 )				clip_height = text->height;			else				clip_height = text->clip_height;                                                                                                			if (clip_height >= 0 && text->draw_borders) {				clip_height -= 6;				if (clip_height < 0)					clip_height = 0;			}                                                                                                			if (ypos - clip_height > text->yofs_edit) {				text->yofs_edit = ypos - clip_height;			}		}		pango_layout_iter_free (iter);	}	text->needs_redraw = 1;	gnome_canvas_item_request_update (GNOME_CANVAS_ITEM(text));}