gtk_ui.py 文件源码

def _nvim_resize(self, columns, rows):
        da = self._drawing_area
        # create FontDescription object for the selected font/size
        font_str = '{0} {1}'.format(self._font_name, self._font_size)
        self._font, pixels, normal_width, bold_width = _parse_font(font_str)
        # calculate the letter_spacing required to make bold have the same
        # width as normal
        self._bold_spacing = normal_width - bold_width
        cell_pixel_width, cell_pixel_height = pixels
        # calculate the total pixel width/height of the drawing area
        pixel_width = cell_pixel_width * columns
        pixel_height = cell_pixel_height * rows
        gdkwin = da.get_window()
        content = cairo.CONTENT_COLOR
        self._cairo_surface = gdkwin.create_similar_surface(content,
                                                            pixel_width,
                                                            pixel_height)
        self._cairo_context = cairo.Context(self._cairo_surface)
        self._pango_layout = PangoCairo.create_layout(self._cairo_context)
        self._pango_layout.set_alignment(Pango.Alignment.LEFT)
        self._pango_layout.set_font_description(self._font)
        self._pixel_width, self._pixel_height = pixel_width, pixel_height
        self._cell_pixel_width = cell_pixel_width
        self._cell_pixel_height = cell_pixel_height
        self._screen = Screen(columns, rows)
        self._window.resize(pixel_width, pixel_height)