Extend literate programming
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Denis Lehmann
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huepaper.org
70
huepaper.org
@ -6,6 +6,10 @@
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This is the literate programming file for =huepaper.py=.
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To export it, open it in *Emacs* and *tangle* it.
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** TODO Update to new code
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Somehow old code was copied in here. Fix it!
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** Imports
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huepaper is mainly based on two libraries.
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@ -25,7 +29,7 @@ huepaper is mainly based on two libraries.
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Every huepaper has a base color.
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It is used to calculate the final colors.
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If a base color is given by the user, it can have every form, Colour supports.
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If a base color is given by the user, it can have every format, Colour supports.
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If no color is given, a random one is chosen.
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#+BEGIN_SRC python
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@ -53,7 +57,7 @@ If no color is given, a random one is chosen.
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** Colors
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The final color limits for each edge of the huepaper are calculated with respect to the base color.
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They rely also on the given input parameters such as saturation and luminance..
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They rely also on the given input parameters such as saturation and luminance.
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Those decide how much the colors differ from the base color.
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#+BEGIN_SRC python
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@ -83,10 +87,13 @@ Those decide how much the colors differ from the base color.
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return tuple(colors)
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#+END_SRC
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** Rest
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** Base image
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The base image is a rectangle with the given height and width.
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The colors of the edges are the four calculated colors.
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All other pixel colors are linear interpolated.
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#+BEGIN_SRC python
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# Create base image from four colors, width and height
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# c1 - top left
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# c2 - top right
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# c3 - bottom right
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@ -109,15 +116,19 @@ Those decide how much the colors differ from the base color.
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# Create image
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image = Image.new('RGBA', (width, height))
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pixels = image.load()
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for x in range(0, width):
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for y in range(0, height):
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pixels[x, y] = col(x / (width - 1), y / (height - 1))
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return image
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#+END_SRC
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** Lines
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# Add lines to an image
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Vertical lines can be added on the side of the huepaper.
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#+BEGIN_SRC python
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def add_lines(image, color):
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line_image = Image.new('RGBA', (width, height), (0, 0, 0, 0))
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@ -146,20 +157,30 @@ Those decide how much the colors differ from the base color.
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# Add line image to input image
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image.alpha_composite(line_image, (0, 0))
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return image
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#+END_SRC
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** Pixelation
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# Add pixelation to image
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The huepaper can be pixelated.
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This is realized by scaling.
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#+BEGIN_SRC python
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def add_pixelation(image, x, y):
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image = image.resize((x, y))
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image = image.resize((width, height), Image.BOX)
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return image
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#+END_SRC
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** Emblem
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# Add emblem to an image from a filepath
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A huepaper can have an emblem.
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This is loaded from a file and placed in the center.
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#+BEGIN_SRC python
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def add_emblem(image, filepath):
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# Load image
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@ -179,9 +200,14 @@ Those decide how much the colors differ from the base color.
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image.alpha_composite(emblem_image, offset)
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return image
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#+END_SRC
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** Save
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# Save image to filepath
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huepapers can be saved to a filepath.
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Already existing files are only overwritten if the user wants to.
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#+BEGIN_SRC python
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def save_image(filepath, image):
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save = True
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@ -206,17 +232,20 @@ Those decide how much the colors differ from the base color.
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stop = True
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else:
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filepath = input('Please enter new path where the wallpaper shall be saved: ')
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#+END_SRC
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** Main
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'''
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Main
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'''
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#+BEGIN_SRC python
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def main():
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global width, height, max_hue, sat_min, sat_max, lum_min, lum_max
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#+END_SRC
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# Initialize parser
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*** Arguments
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The script has various arguments which are used to create the huepaper.
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#+BEGIN_SRC python
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parser = argparse.ArgumentParser(description = 'Create wallpapers based on color hues.')
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parser.add_argument('-W', '--width', default = 1920, type = int, help = 'width of wallpaper (defaul: 1920)')
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parser.add_argument('-H', '--height', default = 1080, type = int, help = 'height of wallpaper (default: 1080)')
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@ -262,8 +291,11 @@ Those decide how much the colors differ from the base color.
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py = int(values[1])
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except:
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parser.error('Pixelation value must be set in form: 42x42')
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#+END_SRC
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# Main routine
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*** Routine
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#+BEGIN_SRC python
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base_color = get_base_color(color)
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c1, c2, c3, c4 = create_colors(base_color)
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image = create_base_image(c1, c2, c3, c4)
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@ -277,7 +309,7 @@ Those decide how much the colors differ from the base color.
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if pixelate:
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image = add_pixelation(image, px, py)
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if emblem:
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image = add_emblem(image, emblem)
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@ -291,7 +323,7 @@ Those decide how much the colors differ from the base color.
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if output:
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save_image(output, image)
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if __name__ == '__main__':
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main()
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