Beispiel #1
0
        protected override bool ProcessDialogKey(Keys keyData)
        {
            switch (keyData)
            {
            case Keys.Right:
                if ((int)(char_index_at_caret - screen_first_char) == text_area.CharsFitted - 1)
                {
                    //нужен скролл на строку вниз
                    scroll_line_down();
                }
                caret_set_position(char_index_at_caret + 1);
                selection_reset(true);
                return(true);

            case Keys.Left:
                if (char_index_at_caret == screen_first_char)
                {
                    //скролл вверх
                    scroll_line_up();
                }
                selection_reset(true);
                caret_set_position(char_index_at_caret - 1);
                return(true);

            case Keys.Down:
                var target_down_point = Caret.GetCaretPos();
                target_down_point.Y = target_down_point.Y + (int)Math.Ceiling(text_area.Font.GetHeight());
                if (text_area.GetLineBounds(text_area.LinesCount - 1).Y < target_down_point.Y)
                {
                    //скролл вниз
                    scroll_line_down();
                    //target_down_point = Caret.GetCaretPos();
                }
                caret_set_position(target_down_point);
                selection_reset(true);
                return(true);

            case Keys.Up:
                var target_up_point_1 = Caret.GetCaretPos();
                var target_up_point_2 = Caret.GetCaretPos();
                target_up_point_2.Y = target_up_point_1.Y - (int)Math.Ceiling(text_area.Font.GetHeight());
                if (target_up_point_2.Y < text_area.Bounds.Y)
                {
                    scroll_line_up();
                    target_up_point_2 = target_up_point_1;
                }
                caret_set_position(target_up_point_2);
                selection_reset(true);
                return(true);

            case Keys.PageUp:
                selection_reset();
                scroll_page_up();
                caret_set_position(screen_first_char);
                return(true);

            case Keys.PageDown:
                selection_reset();
                scroll_page_down();
                caret_set_position(screen_first_char);
                return(true);

            case Keys.Home:
                selection_reset();
                scroll_to_char(0);
                caret_set_position(screen_first_char);
                return(true);

            case Keys.End:
                selection_reset();
                var target_char = text_provider.GetCharsCount();
                target_char = target_char - 16;
                if (target_char < 0)
                {
                    target_char = 0;
                }
                scroll_to_char(target_char);
                caret_set_position(target_char);
                return(true);

            case Keys.Shift | Keys.Right:
                if (selection_last == char_index_at_caret)
                {
                    //продолжаем выделение
                    selection_set(selection_first, char_index_at_caret + 1);
                }
                else
                {
                    //начинаем новое
                    selection_set(char_index_at_caret, char_index_at_caret + 1);
                }

                if ((int)(char_index_at_caret - screen_first_char) == text_area.CharsFitted - 1)
                {
                    //нужен скролл на строку вниз
                    scroll_line_down();
                }
                caret_set_position(char_index_at_caret + 1);
                return(true);

            case Keys.Shift | Keys.Left:
                if (selection_first == char_index_at_caret)
                {
                    //продолжаем выделение влево
                    selection_set(char_index_at_caret - 1, selection_last);
                }
                else
                {
                    //начианем новое
                    selection_set(char_index_at_caret - 1, char_index_at_caret);
                }
                if (char_index_at_caret == screen_first_char)
                {
                    //скролл вверх
                    scroll_line_up();
                }
                caret_set_position(char_index_at_caret - 1);
                return(true);

            case Keys.Shift | Keys.Down:

                var old_char_caret = char_index_at_caret;

                var target_down_point_shift = Caret.GetCaretPos();
                target_down_point_shift.Y = target_down_point_shift.Y + (int)Math.Ceiling(text_area.Font.GetHeight());
                if (text_area.GetLineBounds(text_area.LinesCount - 1).Y < target_down_point_shift.Y)
                {
                    //скролл вниз
                    scroll_line_down();
                    //target_down_point = Caret.GetCaretPos();
                }
                caret_set_position(target_down_point_shift);

                if (selection_last == old_char_caret)
                {
                    //продолжаем выделение
                    selection_set(selection_first, char_index_at_caret);
                }
                else
                {
                    //начинаем новое
                    selection_set(old_char_caret, char_index_at_caret);
                }
                return(true);

            case Keys.Shift | Keys.Up:
                var old_char_caret_2 = char_index_at_caret;

                var target_up_point_1_shift = Caret.GetCaretPos();
                var target_up_point_2_shift = Caret.GetCaretPos();
                target_up_point_2_shift.Y = target_up_point_1_shift.Y - (int)Math.Ceiling(text_area.Font.GetHeight());
                if (target_up_point_2_shift.Y < text_area.Bounds.Y)
                {
                    scroll_line_up();
                    target_up_point_2_shift = target_up_point_1_shift;
                }
                caret_set_position(target_up_point_2_shift);

                if (selection_first == old_char_caret_2)
                {
                    //продолжаем выделение
                    selection_set(char_index_at_caret, selection_last);
                }
                else
                {
                    //начинаем новое
                    selection_set(char_index_at_caret, old_char_caret_2);
                }
                return(true);

            //case Keys.S:
            //    scroll_line_down();
            //    return true;

            //case Keys.W:
            //    scroll_line_up();
            //    return true;

            //case Keys.D:
            //    scroll_page_down();
            //    return true;

            //case Keys.E:
            //    scroll_page_up();
            //    return true;

            //case Keys.T:
            //    text_area.FindPreviousLineStart(CreateGraphics());
            //    return true;

            /*
             * editing
             */
            case Keys.Delete:
                if (EditEnable)
                {
                    text_edit_provider.DeleteChars(char_index_at_caret, 1);
                    Invalidate();
                }
                return(true);

            case Keys.Back:
                if ((EditEnable) && (char_index_at_caret >= 1))
                {
                    text_edit_provider.DeleteChars(char_index_at_caret - 1, 1);
                    Refresh();
                    caret_set_position(char_index_at_caret - 1);
                }
                return(true);

            case Keys.Control | Keys.Delete:
                if ((EditEnable) && (selection_last - selection_first > 0))
                {
                    text_edit_provider.DeleteChars(selection_first, selection_last - selection_first);
                    Invalidate();
                }
                return(true);
            }


            return(base.ProcessDialogKey(keyData));
        }
Beispiel #2
0
        protected override void OnLostFocus(EventArgs e)
        {
            Caret.DestroyCaret();

            base.OnLostFocus(e);
        }