mirror of
https://github.com/stronk-dev/Guitar-Sheet-Parser.git
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109 lines
4.3 KiB
Python
109 lines
4.3 KiB
Python
#!/usr/bin/env python3
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##
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# @file output2img.py
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#
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# @brief This program converts the internal data structure to an image file
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#
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# @section description Description
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# Generates PNG images of a specific dimension (currently A4) of tablature data
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# Dynamically resizes specific sections to maximize using the entire paper (and avoid awkward page flips)
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#
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# @section notes Notes
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# -
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#
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# @section todo TODO
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# - Various prints should be printed at specific log levels, to easily switch between debug, info or warnings only
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import os
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from PIL import Image, ImageDraw
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"""!@brief Exports the song object to images
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This function renders the metadata and sections
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of a given Song object, and exports it as PNG to the destination folder.
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It will create the folder if it does not exist yet.
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It will overwrite existing images, but will not clear old images
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@param folderLocation path to where we want the images
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@param songObj lib.dataStructures.Song object
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@return None
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"""
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def outputToImage(folderLocation, songObj):
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# Create target Directory if doesn't exist
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if not os.path.exists(folderLocation):
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os.mkdir(folderLocation)
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print("Directory " , folderLocation , " Created ")
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#else:
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#print("Directory " , folderLocation , " already exists")
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# Init image info
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imageNumber = 1
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currentHeight = songObj.topMargin
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# New Image
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a4image = Image.new('RGB',(songObj.imageWidth, songObj.imageHeight),(songObj.backgroundColour))
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draw = ImageDraw.Draw(a4image)
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# Write metadata
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for line in songObj.metadata.split('\n'):
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# remove any unwanted characters from metadata
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line = line.rstrip()
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if not line:
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continue
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#print("meta line '{}'".format(line))
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metadataTextWidth, metadataTextHeight = songObj.fontMetadata.getsize(line)
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draw.text((songObj.leftMargin,currentHeight), line, fill=songObj.metadataColour, font=songObj.fontMetadata)
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currentHeight += metadataTextHeight
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# Margin between metadata and the first section
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currentHeight += songObj.topMargin
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# Draw all pages
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for page in songObj.pages:
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for section in page.sections:
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# Reset section specific variables
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lineIterator = 0
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amountOfLines = len(section.lyrics)
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if (amountOfLines != len(section.tablatures)):
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print("Cannot write this section to file, since it was not processed correctly. There are {} tablature lines and {} lyric lines. Aborting...".format(len(section.chords), amountOfLines))
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return
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if (section.expectedHeight == -1 or section.expectedWidth == -1):
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print("Cannot write this section to file, since it was not processed correctly. The expected dimensions are not set. Aborting...")
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return
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# write section title
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headerWidth, headerHeight = songObj.fontTablature.getsize(section.header)
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draw.text((songObj.leftMargin,currentHeight), section.header, fill=songObj.fontColour, font=songObj.fontTablature)
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currentHeight += headerHeight
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# Write each line tablature&lyric data
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while lineIterator < amountOfLines:
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#print("Printing tablatures line {} and lyrics line {}".format(section.tablatures[lineIterator], section.lyrics[lineIterator]))
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# Get tablatures&lyric line
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lyricTextWidth, lyricTextHeight = songObj.fontLyrics.getsize(section.lyrics[lineIterator])
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tablatureTextWidth, tablatureTextHeight = songObj.fontTablature.getsize(section.tablatures[lineIterator])
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# add to image file
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draw.text((songObj.leftMargin,currentHeight), section.tablatures[lineIterator], fill=songObj.fontColour, font=songObj.fontTablature)
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currentHeight += tablatureTextHeight
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draw.text((songObj.leftMargin,currentHeight), section.lyrics[lineIterator], fill=songObj.fontColour, font=songObj.fontLyrics)
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currentHeight += lyricTextHeight
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lineIterator += 1
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#print("currentheight={}".format(currentHeight))
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# Margin between each section
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currentHeight += songObj.topMargin
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# Got all sections in the page, so write it
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outputLocation = folderLocation + "/" + str(imageNumber) + ".png"
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a4image.save(outputLocation)
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a4image = Image.new('RGB',(songObj.imageWidth, songObj.imageHeight),(songObj.backgroundColour))
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draw = ImageDraw.Draw(a4image)
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currentHeight = songObj.topMargin
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imageNumber += 1
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