Quantum Painter (#10174)

* Install dependencies before executing unit tests.

* Split out UTF-8 decoder.

* Fixup python formatting rules.

* Add documentation for QGF/QFF and the RLE format used.

* Add CLI commands for converting images and fonts.

* Add stub rules.mk for QP.

* Add stream type.

* Add base driver and comms interfaces.

* Add support for SPI, SPI+D/C comms drivers.

* Include <qp.h> when enabled.

* Add base support for SPI+D/C+RST panels, as well as concrete implementation of ST7789.

* Add support for GC9A01.

* Add support for ILI9341.

* Add support for ILI9163.

* Add support for SSD1351.

* Implement qp_setpixel, including pixdata buffer management.

* Implement qp_line.

* Implement qp_rect.

* Implement qp_circle.

* Implement qp_ellipse.

* Implement palette interpolation.

* Allow for streams to work with either flash or RAM.

* Image loading.

* Font loading.

* QGF palette loading.

* Progressive decoder of pixel data supporting Raw+RLE, 1-,2-,4-,8-bpp monochrome and palette-based images.

* Image drawing.

* Animations.

* Font rendering.

* Check against 256 colours, dump out the loaded palette if debugging enabled.

* Fix build.

* AVR is not the intended audience.

* `qmk format-c`

* Generation fix.

* First batch of docs.

* More docs and examples.

* Review comments.

* Public API documentation.

3 files changed, 175 insertions, 0 deletions

diff --git a/lib/python/qmk/cli/painter/__init__.py b/lib/python/qmk/cli/painter/__init__.py
new file mode 100644
index 0000000000..d1a225346c
--- /dev/null
+++ b/lib/python/qmk/cli/painter/__init__.py
@@ -0,0 +1,2 @@
+from . import convert_graphics
+from . import make_font
diff --git a/lib/python/qmk/cli/painter/convert_graphics.py b/lib/python/qmk/cli/painter/convert_graphics.py
new file mode 100644
index 0000000000..bbc30d26ff
--- /dev/null
+++ b/lib/python/qmk/cli/painter/convert_graphics.py
@@ -0,0 +1,86 @@
+"""This script tests QGF functionality.
+"""
+import re
+import datetime
+from io import BytesIO
+from qmk.path import normpath
+from qmk.painter import render_header, render_source, render_license, render_bytes, valid_formats
+from milc import cli
+from PIL import Image
+
+
+@cli.argument('-v', '--verbose', arg_only=True, action='store_true', help='Turns on verbose output.')
+@cli.argument('-i', '--input', required=True, help='Specify input graphic file.')
+@cli.argument('-o', '--output', default='', help='Specify output directory. Defaults to same directory as input.')
+@cli.argument('-f', '--format', required=True, help='Output format, valid types: %s' % (', '.join(valid_formats.keys())))
+@cli.argument('-r', '--no-rle', arg_only=True, action='store_true', help='Disables the use of RLE when encoding images.')
+@cli.argument('-d', '--no-deltas', arg_only=True, action='store_true', help='Disables the use of delta frames when encoding animations.')
+@cli.subcommand('Converts an input image to something QMK understands')
+def painter_convert_graphics(cli):
+    """Converts an image file to a format that Quantum Painter understands.
+
+    This command uses the `qmk.painter` module to generate a Quantum Painter image defintion from an image. The generated definitions are written to a files next to the input -- `INPUT.c` and `INPUT.h`.
+    """
+    # Work out the input file
+    if cli.args.input != '-':
+        cli.args.input = normpath(cli.args.input)
+
+        # Error checking
+        if not cli.args.input.exists():
+            cli.log.error('Input image file does not exist!')
+            cli.print_usage()
+            return False
+
+    # Work out the output directory
+    if len(cli.args.output) == 0:
+        cli.args.output = cli.args.input.parent
+    cli.args.output = normpath(cli.args.output)
+
+    # Ensure we have a valid format
+    if cli.args.format not in valid_formats.keys():
+        cli.log.error('Output format %s is invalid. Allowed values: %s' % (cli.args.format, ', '.join(valid_formats.keys())))
+        cli.print_usage()
+        return False
+
+    # Work out the encoding parameters
+    format = valid_formats[cli.args.format]
+
+    # Load the input image
+    input_img = Image.open(cli.args.input)
+
+    # Convert the image to QGF using PIL
+    out_data = BytesIO()
+    input_img.save(out_data, "QGF", use_deltas=(not cli.args.no_deltas), use_rle=(not cli.args.no_rle), qmk_format=format, verbose=cli.args.verbose)
+    out_bytes = out_data.getvalue()
+
+    # Work out the text substitutions for rendering the output data
+    subs = {
+        'generated_type': 'image',
+        'var_prefix': 'gfx',
+        'generator_command': f'qmk painter-convert-graphics -i {cli.args.input.name} -f {cli.args.format}',
+        'year': datetime.date.today().strftime("%Y"),
+        'input_file': cli.args.input.name,
+        'sane_name': re.sub(r"[^a-zA-Z0-9]", "_", cli.args.input.stem),
+        'byte_count': len(out_bytes),
+        'bytes_lines': render_bytes(out_bytes),
+        'format': cli.args.format,
+    }
+
+    # Render the license
+    subs.update({'license': render_license(subs)})
+
+    # Render and write the header file
+    header_text = render_header(subs)
+    header_file = cli.args.output / (cli.args.input.stem + ".qgf.h")
+    with open(header_file, 'w') as header:
+        print(f"Writing {header_file}...")
+        header.write(header_text)
+        header.close()
+
+    # Render and write the source file
+    source_text = render_source(subs)
+    source_file = cli.args.output / (cli.args.input.stem + ".qgf.c")
+    with open(source_file, 'w') as source:
+        print(f"Writing {source_file}...")
+        source.write(source_text)
+        source.close()
diff --git a/lib/python/qmk/cli/painter/make_font.py b/lib/python/qmk/cli/painter/make_font.py
new file mode 100644
index 0000000000..0762843fd3
--- /dev/null
+++ b/lib/python/qmk/cli/painter/make_font.py
@@ -0,0 +1,87 @@
+"""This script automates the conversion of font files into a format QMK firmware understands.
+"""
+
+import re
+import datetime
+from io import BytesIO
+from qmk.path import normpath
+from qmk.painter_qff import QFFFont
+from qmk.painter import render_header, render_source, render_license, render_bytes, valid_formats
+from milc import cli
+
+
+@cli.argument('-f', '--font', required=True, help='Specify input font file.')
+@cli.argument('-o', '--output', required=True, help='Specify output image path.')
+@cli.argument('-s', '--size', default=12, help='Specify font size. Default 12.')
+@cli.argument('-n', '--no-ascii', arg_only=True, action='store_true', help='Disables output of the full ASCII character set (0x20..0x7E), exporting only the glyphs specified.')
+@cli.argument('-u', '--unicode-glyphs', default='', help='Also generate the specified unicode glyphs.')
+@cli.argument('-a', '--no-aa', arg_only=True, action='store_true', help='Disable anti-aliasing on fonts.')
+@cli.subcommand('Converts an input font to something QMK understands')
+def painter_make_font_image(cli):
+    # Create the font object
+    font = QFFFont(cli)
+    # Read from the input file
+    cli.args.font = normpath(cli.args.font)
+    font.generate_image(cli.args.font, cli.args.size, include_ascii_glyphs=(not cli.args.no_ascii), unicode_glyphs=cli.args.unicode_glyphs, use_aa=(False if cli.args.no_aa else True))
+    # Render out the data
+    font.save_to_image(normpath(cli.args.output))
+
+
+@cli.argument('-i', '--input', help='Specify input graphic file.')
+@cli.argument('-o', '--output', default='', help='Specify output directory. Defaults to same directory as input.')
+@cli.argument('-n', '--no-ascii', arg_only=True, action='store_true', help='Disables output of the full ASCII character set (0x20..0x7E), exporting only the glyphs specified.')
+@cli.argument('-u', '--unicode-glyphs', default='', help='Also generate the specified unicode glyphs.')
+@cli.argument('-f', '--format', required=True, help='Output format, valid types: %s' % (', '.join(valid_formats.keys())))
+@cli.argument('-r', '--no-rle', arg_only=True, action='store_true', help='Disable the use of RLE to minimise converted image size.')
+@cli.subcommand('Converts an input font image to something QMK firmware understands')
+def painter_convert_font_image(cli):
+    # Work out the format
+    format = valid_formats[cli.args.format]
+
+    # Create the font object
+    font = QFFFont(cli.log)
+
+    # Read from the input file
+    cli.args.input = normpath(cli.args.input)
+    font.read_from_image(cli.args.input, include_ascii_glyphs=(not cli.args.no_ascii), unicode_glyphs=cli.args.unicode_glyphs)
+
+    # Work out the output directory
+    if len(cli.args.output) == 0:
+        cli.args.output = cli.args.input.parent
+    cli.args.output = normpath(cli.args.output)
+
+    # Render out the data
+    out_data = BytesIO()
+    font.save_to_qff(format, (False if cli.args.no_rle else True), out_data)
+
+    # Work out the text substitutions for rendering the output data
+    subs = {
+        'generated_type': 'font',
+        'var_prefix': 'font',
+        'generator_command': f'qmk painter-convert-font-image -i {cli.args.input.name} -f {cli.args.format}',
+        'year': datetime.date.today().strftime("%Y"),
+        'input_file': cli.args.input.name,
+        'sane_name': re.sub(r"[^a-zA-Z0-9]", "_", cli.args.input.stem),
+        'byte_count': out_data.getbuffer().nbytes,
+        'bytes_lines': render_bytes(out_data.getbuffer().tobytes()),
+        'format': cli.args.format,
+    }
+
+    # Render the license
+    subs.update({'license': render_license(subs)})
+
+    # Render and write the header file
+    header_text = render_header(subs)
+    header_file = cli.args.output / (cli.args.input.stem + ".qff.h")
+    with open(header_file, 'w') as header:
+        print(f"Writing {header_file}...")
+        header.write(header_text)
+        header.close()
+
+    # Render and write the source file
+    source_text = render_source(subs)
+    source_file = cli.args.output / (cli.args.input.stem + ".qff.c")
+    with open(source_file, 'w') as source:
+        print(f"Writing {source_file}...")
+        source.write(source_text)
+        source.close()