RabiscoPad

A bare-bones SVG sketchpad - Licensed under GPL v3.0

Developed by Alexandre B A Villares and Foad S. Farimani

How to run this?

• You will need to install Processing Python Mode— we might provide self-contained "builds" for Linux, MacOS & Windows one day (you could volunteer to mantain them!);
• Clone this repository or just hit download;
• Use the Processing IDE to open the rabiscopad.pyde file, mind it must be kept on its folder named rabiscopad with its .py modules.

How to contribute?

[TODO: We need better instructions]

• Start by opening a conversation in an issue, after some talk, we will probably love to have your PRs too!

Some documentation

Keyboard shortcuts:

• CONTROL+s save SVG
• c draw circle mode
• l draw line mode
• r draw quad/rectangle mode
• s free drawing 'sketch' mode
• x selection mode
• backspace or delete erase last element or selected element
• e erase all
• + and - change stroke weight

Mouse Wheel

• Use the mouse wheel to rotate selected elements (when in selection mode)
• Hold SHIFT to scale instead
• Hold CONTROL to make the mouse the center of rotation/scaling

Change log

• v2020_12_19 exporting SVG now!
• v2020_12_20 line mode & circle mode
• v2020_12_21 first attempt at GUI Buttons
• v2020_12_22 pe/stroke color buttons
• v2020_12_24 first crude attempt at selection mode
• v2020_12_27 mode buttons, multiple key detection (to get SHIFT) multiple selection (with SHIFT), moving selected objects with mouse drag
• v2021_01_02 Rotate selected objects with mouse wheel SHIFT will scale, CONTROL to change center of rotation/scaling
• v2021_01_03 Better selection (for rect, line, circle), highlights are now translucent over drawing. Added fill selection buttons. Experimental window resize. Changed some shortcuts!
• v2021_01_10 Let's try Named tuples!!! Ctrl+s to save, and with timestamp on filename
• v2021_01_23 First Undo attempt

TODO IDEAS:

• [X] GUI buttons (can be improved a lot)

  • [X] stroke/pen colors
  • [ ] stroke weight
  • [X] drawing modes
  • [ ] changing background color

• [X] save SVG with timestamp on name

  • [X] saving SVG on sketch folder with timestamp name!
  • [X] save SVG to user selected location

• [ ] load & save drawing

  • HARDER: load SVG and parse elements to allow editing saved file
  • EASIER: save/load session data in a serialized file (I should look at: JSON and YAML)
  • REALLY EASY: pickle (dump and load of drawing_elements list is a nobrainer)

• [WIP] modes & elements

  • [X] line
  • [X] circle
  • [X] "quad"/rectangle
  • [ ] triangle / regular polygon ?
  • [ ] polygon ?
  • [X] select/edit mode
    • erase selected element
    • drag mouse to move them
    • transform (with the scroll wheel!)
      • rotate
      • scale

• [ ] snapping

  • to grid / ruler
  • to objects (possibly very hard)

• [ ] other features:

  • import image - maybe cumbersome (and involved decisons)
  • export raster image (PNG) - easy peasy
  • import / open SVG (hard if you want to edit things, easy otherwise)
  • layers (maybe hard, hard UI)
  • zoom and pan (maybe hard... maybe we don't want to tackle this)
  • [ ] change background
  • [X] resize the window (done! check for nasty consequences!)

• [WIP] two-key keyboard shortcuts

  • [X] cmd/ctrl + s --> save
  • [ ] cmd/ctrl + d --> duplicate selected / last drawn
  • [X] Experimental! cmd/ctrl + z --> undo
  • [X] Experimental! cmd/ctrl + r --> redo (see above)