def draw(self, ctx: Context): text_baseline = self.get_text_baseline(ctx) default_font_max_height = ctx.get_scaled_font().extents()[0] text_max_length = float('inf') line_string_bottom_length = text_baseline.length trimmed = False while text_max_length > line_string_bottom_length: text_max_length = ctx.text_extents(self.text)[4] / default_font_max_height * self.text_height + \ (len(self.text)-1) * self.text_spacing if text_max_length > line_string_bottom_length: self.text = self.text[:-1].strip() trimmed = True text_start_interp_pos_min = 0 text_start_interp_pos_max = line_string_bottom_length - text_max_length if self.text_alignment == 'left': text_start_interp_pos = self.text_alignment_offset elif self.text_alignment == 'center': text_start_interp_pos = line_string_bottom_length / 2 - text_max_length / 2 - self.text_alignment_offset else: text_start_interp_pos = line_string_bottom_length - text_max_length - self.text_alignment_offset text_start_interp_pos = min( text_start_interp_pos_max, max(text_start_interp_pos_min, text_start_interp_pos)) text_interp_pos = text_start_interp_pos for char in self.text: char_pos_origin = text_baseline.interpolate(text_interp_pos) char_advance_x = ctx.text_extents( char)[4] / default_font_max_height * self.text_height char_pos_end = text_baseline.interpolate(text_interp_pos + char_advance_x) ctx.save() ctx.translate(char_pos_origin.x, char_pos_origin.y) text_angle = math.atan2(char_pos_end.y - char_pos_origin.y, char_pos_end.x - char_pos_origin.x) ctx.rotate(text_angle) ctx.scale(1 / default_font_max_height * self.text_height) if not trimmed: ctx.set_source_rgba(0, 0, 0, 1) else: ctx.set_source_rgba(0, 0, 0.2, 1) ctx.show_text(char) ctx.fill() ctx.restore() text_interp_pos += char_advance_x + self.text_spacing
def _generate_layer(self, transcription, page, layer): surface = PDFSurface(layer, *page.page_size) context = Context(surface) # context.select_font_face('Georgia') context.set_source_rgba(1, 1, 1, 1 / 256) # almost invisible context.set_font_size(2) for line_ink, line_transcription in zip(page.lines, transcription): ink, transformation = writing.normalized(line_ink) context.save() context.transform( Matrix(*(Transformation.translation( 0, page.page_size[1]).parameter))) context.transform(Matrix(*(Transformation.mirror(0).parameter))) context.transform(Matrix(*((~transformation).parameter))) context.transform(Matrix(*(Transformation.mirror(0).parameter))) HANDWRITING_WIDTH = ink.boundary_box[1] TYPEWRITING_WIDTH = context.text_extents(line_transcription)[2] context.scale(HANDWRITING_WIDTH / TYPEWRITING_WIDTH, 1) context.move_to(0, 0) context.show_text(line_transcription) context.restore() context.stroke() context.show_page() surface.flush()
ctx.set_operator(OPERATOR_OVER) ctx.select_font_face("Roboto", FONT_SLANT_NORMAL, FONT_WEIGHT_BOLD) ctx.set_font_size(FONT_SIZE) labels = base_labels + variant_info for pass_ in range(2): for pin_list, type, note in labels: text = f"{pin_list}: {note}" if note else pin_list pin_names = pin_list.split("+") # calculate label size (x_bearing, y_bearing, width, height, x_advance, y_advance) = ctx.text_extents(text) label_width = width + 2 * label_pad[0] label_height = height + 2 * label_pad[1] _, _, align = pin_defs[pin_names[0]] # HACK if align == RIGHT: x = w * pad_sides - label_margin[0] - label_width line_origin_x = x + label_width else: x = w * pad_sides + w + label_margin[0] line_origin_x = x # https://lospec.com/palette-list/dawnbringer-16 color_table = {