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diff --git a/lib/python/qmk/painter_qff.py b/lib/python/qmk/painter_qff.py
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+# Copyright 2021 Nick Brassel (@tzarc)
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# Quantum Font File "QFF" Font File Format.
+# See https://docs.qmk.fm/#/quantum_painter_qff for more information.
+
+from pathlib import Path
+from typing import Dict, Any
+from colorsys import rgb_to_hsv
+from PIL import Image, ImageDraw, ImageFont, ImageChops
+from PIL._binary import o8, o16le as o16, o32le as o32
+from qmk.painter_qgf import QGFBlockHeader, QGFFramePaletteDescriptorV1
+from milc.attrdict import AttrDict
+import qmk.painter
+
+
+def o24(i):
+ return o16(i & 0xFFFF) + o8((i & 0xFF0000) >> 16)
+
+
+########################################################################################################################
+
+
+class QFFGlyphInfo(AttrDict):
+ def __init__(self, *args, **kwargs):
+ super().__init__()
+
+ for n, value in enumerate(args):
+ self[f'arg:{n}'] = value
+
+ for key, value in kwargs.items():
+ self[key] = value
+
+ def write(self, fp, include_code_point):
+ if include_code_point is True:
+ fp.write(o24(ord(self.code_point)))
+
+ value = ((self.data_offset << 6) & 0xFFFFC0) | (self.w & 0x3F)
+ fp.write(o24(value))
+
+
+########################################################################################################################
+
+
+class QFFFontDescriptor:
+ type_id = 0x00
+ length = 20
+ magic = 0x464651
+
+ def __init__(self):
+ self.header = QGFBlockHeader()
+ self.header.type_id = QFFFontDescriptor.type_id
+ self.header.length = QFFFontDescriptor.length
+ self.version = 1
+ self.total_file_size = 0
+ self.line_height = 0
+ self.has_ascii_table = False
+ self.unicode_glyph_count = 0
+ self.format = 0xFF
+ self.flags = 0
+ self.compression = 0xFF
+ self.transparency_index = 0xFF # TODO: Work out how to retrieve the transparent palette entry from the PIL gif loader
+
+ def write(self, fp):
+ self.header.write(fp)
+ fp.write(
+ b'' # start off with empty bytes...
+ + o24(QFFFontDescriptor.magic) # magic
+ + o8(self.version) # version
+ + o32(self.total_file_size) # file size
+ + o32((~self.total_file_size) & 0xFFFFFFFF) # negated file size
+ + o8(self.line_height) # line height
+ + o8(1 if self.has_ascii_table is True else 0) # whether or not we have an ascii table present
+ + o16(self.unicode_glyph_count & 0xFFFF) # number of unicode glyphs present
+ + o8(self.format) # format
+ + o8(self.flags) # flags
+ + o8(self.compression) # compression
+ + o8(self.transparency_index) # transparency index
+ )
+
+ @property
+ def is_transparent(self):
+ return (self.flags & 0x01) == 0x01
+
+ @is_transparent.setter
+ def is_transparent(self, val):
+ if val:
+ self.flags |= 0x01
+ else:
+ self.flags &= ~0x01
+
+
+########################################################################################################################
+
+
+class QFFAsciiGlyphTableV1:
+ type_id = 0x01
+ length = 95 * 3 # We have 95 glyphs: [0x20...0x7E]
+
+ def __init__(self):
+ self.header = QGFBlockHeader()
+ self.header.type_id = QFFAsciiGlyphTableV1.type_id
+ self.header.length = QFFAsciiGlyphTableV1.length
+
+ # Each glyph is key=code_point, value=QFFGlyphInfo
+ self.glyphs = {}
+
+ def add_glyph(self, glyph: QFFGlyphInfo):
+ self.glyphs[ord(glyph.code_point)] = glyph
+
+ def write(self, fp):
+ self.header.write(fp)
+
+ for n in range(0x20, 0x7F):
+ self.glyphs[n].write(fp, False)
+
+
+########################################################################################################################
+
+
+class QFFUnicodeGlyphTableV1:
+ type_id = 0x02
+
+ def __init__(self):
+ self.header = QGFBlockHeader()
+ self.header.type_id = QFFUnicodeGlyphTableV1.type_id
+ self.header.length = 0
+
+ # Each glyph is key=code_point, value=QFFGlyphInfo
+ self.glyphs = {}
+
+ def add_glyph(self, glyph: QFFGlyphInfo):
+ self.glyphs[ord(glyph.code_point)] = glyph
+
+ def write(self, fp):
+ self.header.length = len(self.glyphs.keys()) * 6
+ self.header.write(fp)
+
+ for n in sorted(self.glyphs.keys()):
+ self.glyphs[n].write(fp, True)
+
+
+########################################################################################################################
+
+
+class QFFFontDataDescriptorV1:
+ type_id = 0x04
+
+ def __init__(self):
+ self.header = QGFBlockHeader()
+ self.header.type_id = QFFFontDataDescriptorV1.type_id
+ self.data = []
+
+ def write(self, fp):
+ self.header.length = len(self.data)
+ self.header.write(fp)
+ fp.write(bytes(self.data))
+
+
+########################################################################################################################
+
+
+def _generate_font_glyphs_list(use_ascii, unicode_glyphs):
+ # The set of glyphs that we want to generate images for
+ glyphs = {}
+
+ # Add ascii charset if requested
+ if use_ascii is True:
+ for c in range(0x20, 0x7F): # does not include 0x7F!
+ glyphs[chr(c)] = True
+
+ # Append any extra unicode glyphs
+ unicode_glyphs = list(unicode_glyphs)
+ for c in unicode_glyphs:
+ glyphs[c] = True
+
+ return sorted(glyphs.keys())
+
+
+class QFFFont:
+ def __init__(self, logger):
+ self.logger = logger
+ self.image = None
+ self.glyph_data = {}
+ self.glyph_height = 0
+ return
+
+ def _extract_glyphs(self, format):
+ total_data_size = 0
+ total_rle_data_size = 0
+
+ converted_img = qmk.painter.convert_requested_format(self.image, format)
+ (self.palette, _) = qmk.painter.convert_image_bytes(converted_img, format)
+
+ # Work out how many bytes used for RLE vs. non-RLE
+ for _, glyph_entry in self.glyph_data.items():
+ glyph_img = converted_img.crop((glyph_entry.x, 1, glyph_entry.x + glyph_entry.w, 1 + self.glyph_height))
+ (_, this_glyph_image_bytes) = qmk.painter.convert_image_bytes(glyph_img, format)
+ this_glyph_rle_bytes = qmk.painter.compress_bytes_qmk_rle(this_glyph_image_bytes)
+ total_data_size += len(this_glyph_image_bytes)
+ total_rle_data_size += len(this_glyph_rle_bytes)
+ glyph_entry['image_uncompressed_bytes'] = this_glyph_image_bytes
+ glyph_entry['image_compressed_bytes'] = this_glyph_rle_bytes
+
+ return (total_data_size, total_rle_data_size)
+
+ def _parse_image(self, img, include_ascii_glyphs: bool = True, unicode_glyphs: str = ''):
+ # Clear out any existing font metadata
+ self.image = None
+ # Each glyph is key=code_point, value={ x: ?, w: ? }
+ self.glyph_data = {}
+ self.glyph_height = 0
+
+ # Work out the list of glyphs required
+ glyphs = _generate_font_glyphs_list(include_ascii_glyphs, unicode_glyphs)
+
+ # Work out the geometry
+ (width, height) = img.size
+
+ # Work out the glyph offsets/widths
+ glyph_pixel_offsets = []
+ glyph_pixel_widths = []
+ pixels = img.load()
+
+ # Run through the markers and work out where each glyph starts/stops
+ glyph_split_color = pixels[0, 0] # top left pixel is the marker color we're going to use to split each glyph
+ glyph_pixel_offsets.append(0)
+ last_offset = 0
+ for x in range(1, width):
+ if pixels[x, 0] == glyph_split_color:
+ glyph_pixel_offsets.append(x)
+ glyph_pixel_widths.append(x - last_offset)
+ last_offset = x
+ glyph_pixel_widths.append(width - last_offset)
+
+ # Make sure the number of glyphs we're attempting to generate matches the input image
+ if len(glyph_pixel_offsets) != len(glyphs):
+ self.logger.error('The number of glyphs to generate doesn\'t match the number of detected glyphs in the input image.')
+ return
+
+ # Set up the required metadata for each glyph
+ for n in range(0, len(glyph_pixel_offsets)):
+ self.glyph_data[glyphs[n]] = QFFGlyphInfo(code_point=glyphs[n], x=glyph_pixel_offsets[n], w=glyph_pixel_widths[n])
+
+ # Parsing was successful, keep the image in this instance
+ self.image = img
+ self.glyph_height = height - 1 # subtract the line with the markers
+
+ def generate_image(self, ttf_file: Path, font_size: int, include_ascii_glyphs: bool = True, unicode_glyphs: str = '', include_before_left: bool = False, use_aa: bool = True):
+ # Load the font
+ font = ImageFont.truetype(str(ttf_file), int(font_size))
+ # Work out the max font size
+ max_font_size = font.font.ascent + abs(font.font.descent)
+ # Work out the list of glyphs required
+ glyphs = _generate_font_glyphs_list(include_ascii_glyphs, unicode_glyphs)
+
+ baseline_offset = 9999999
+ total_glyph_width = 0
+ max_glyph_height = -1
+
+ # Measure each glyph to determine the overall baseline offset required
+ for glyph in glyphs:
+ (ls_l, ls_t, ls_r, ls_b) = font.getbbox(glyph, anchor='ls')
+ glyph_width = (ls_r - ls_l) if include_before_left else (ls_r)
+ glyph_height = font.getbbox(glyph, anchor='la')[3]
+ if max_glyph_height < glyph_height:
+ max_glyph_height = glyph_height
+ total_glyph_width += glyph_width
+ if baseline_offset > ls_t:
+ baseline_offset = ls_t
+
+ # Create the output image
+ img = Image.new("RGB", (total_glyph_width + 1, max_font_size * 2 + 1), (0, 0, 0, 255))
+ cur_x_pos = 0
+
+ # Loop through each glyph...
+ for glyph in glyphs:
+ # Work out this glyph's bounding box
+ (ls_l, ls_t, ls_r, ls_b) = font.getbbox(glyph, anchor='ls')
+ glyph_width = (ls_r - ls_l) if include_before_left else (ls_r)
+ glyph_height = ls_b - ls_t
+ x_offset = -ls_l
+ y_offset = ls_t - baseline_offset
+
+ # Draw each glyph to its own image so we don't get anti-aliasing applied to the final image when straddling edges
+ glyph_img = Image.new("RGB", (glyph_width, max_font_size), (0, 0, 0, 255))
+ glyph_draw = ImageDraw.Draw(glyph_img)
+ if not use_aa:
+ glyph_draw.fontmode = "1"
+ glyph_draw.text((x_offset, y_offset), glyph, font=font, anchor='lt')
+
+ # Place the glyph-specific image in the correct location overall
+ img.paste(glyph_img, (cur_x_pos, 1))
+
+ # Set up the marker for start of each glyph
+ pixels = img.load()
+ pixels[cur_x_pos, 0] = (255, 0, 255)
+
+ # Increment for the next glyph's position
+ cur_x_pos += glyph_width
+
+ # Add the ending marker so that the difference/crop works
+ pixels = img.load()
+ pixels[cur_x_pos, 0] = (255, 0, 255)
+
+ # Determine the usable font area
+ dummy_img = Image.new("RGB", (total_glyph_width + 1, max_font_size + 1), (0, 0, 0, 255))
+ bbox = ImageChops.difference(img, dummy_img).getbbox()
+ bbox = (bbox[0], bbox[1], bbox[2] - 1, bbox[3]) # remove the unused end-marker
+
+ # Crop and re-parse the resulting image to ensure we're generating the correct format
+ self._parse_image(img.crop(bbox), include_ascii_glyphs, unicode_glyphs)
+
+ def save_to_image(self, img_file: Path):
+ # Drop out if there's no image loaded
+ if self.image is None:
+ self.logger.error('No image is loaded.')
+ return
+
+ # Save the image to the supplied file
+ self.image.save(str(img_file))
+
+ def read_from_image(self, img_file: Path, include_ascii_glyphs: bool = True, unicode_glyphs: str = ''):
+ # Load and parse the supplied image file
+ self._parse_image(Image.open(str(img_file)), include_ascii_glyphs, unicode_glyphs)
+ return
+
+ def save_to_qff(self, format: Dict[str, Any], use_rle: bool, fp):
+ # Drop out if there's no image loaded
+ if self.image is None:
+ self.logger.error('No image is loaded.')
+ return
+
+ # Work out if we want to use RLE at all, skipping it if it's not any smaller (it's applied per-glyph)
+ (total_data_size, total_rle_data_size) = self._extract_glyphs(format)
+ if use_rle:
+ use_rle = (total_rle_data_size < total_data_size)
+
+ # For each glyph, work out which image data we want to use and append it to the image buffer, recording the byte-wise offset
+ img_buffer = bytes()
+ for _, glyph_entry in self.glyph_data.items():
+ glyph_entry['data_offset'] = len(img_buffer)
+ glyph_img_bytes = glyph_entry.image_compressed_bytes if use_rle else glyph_entry.image_uncompressed_bytes
+ img_buffer += bytes(glyph_img_bytes)
+
+ font_descriptor = QFFFontDescriptor()
+ ascii_table = QFFAsciiGlyphTableV1()
+ unicode_table = QFFUnicodeGlyphTableV1()
+ data_descriptor = QFFFontDataDescriptorV1()
+ data_descriptor.data = img_buffer
+
+ # Check if we have all the ASCII glyphs present
+ include_ascii_glyphs = all([chr(n) in self.glyph_data for n in range(0x20, 0x7F)])
+
+ # Helper for populating the blocks
+ for code_point, glyph_entry in self.glyph_data.items():
+ if ord(code_point) >= 0x20 and ord(code_point) <= 0x7E and include_ascii_glyphs:
+ ascii_table.add_glyph(glyph_entry)
+ else:
+ unicode_table.add_glyph(glyph_entry)
+
+ # Configure the font descriptor
+ font_descriptor.line_height = self.glyph_height
+ font_descriptor.has_ascii_table = include_ascii_glyphs
+ font_descriptor.unicode_glyph_count = len(unicode_table.glyphs.keys())
+ font_descriptor.is_transparent = False
+ font_descriptor.format = format['image_format_byte']
+ font_descriptor.compression = 0x01 if use_rle else 0x00
+
+ # Write a dummy font descriptor -- we'll have to come back and write it properly once we've rendered out everything else
+ font_descriptor_location = fp.tell()
+ font_descriptor.write(fp)
+
+ # Write out the ASCII table if required
+ if font_descriptor.has_ascii_table:
+ ascii_table.write(fp)
+
+ # Write out the unicode table if required
+ if font_descriptor.unicode_glyph_count > 0:
+ unicode_table.write(fp)
+
+ # Write out the palette if required
+ if format['has_palette']:
+ palette_descriptor = QGFFramePaletteDescriptorV1()
+
+ # Helper to convert from RGB888 to the QMK "dialect" of HSV888
+ def rgb888_to_qmk_hsv888(e):
+ hsv = rgb_to_hsv(e[0] / 255.0, e[1] / 255.0, e[2] / 255.0)
+ return (int(hsv[0] * 255.0), int(hsv[1] * 255.0), int(hsv[2] * 255.0))
+
+ # Convert all palette entries to HSV888 and write to the output
+ palette_descriptor.palette_entries = list(map(rgb888_to_qmk_hsv888, self.palette))
+ palette_descriptor.write(fp)
+
+ # Write out the image data
+ data_descriptor.write(fp)
+
+ # Now fix up the overall font descriptor, then write it in the correct location
+ font_descriptor.total_file_size = fp.tell()
+ fp.seek(font_descriptor_location, 0)
+ font_descriptor.write(fp)