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JS Paint Todo

Help

  • Resizable panes
  • Resizable window
  • Link-esque things
    • Popups (I'd probably make the text within the popups selectable)
    • Related topics (I'd probably make this a heading with links instead of the weird context menu thing)
  • Note unsupported features (or just implement these)
    • "To use black and white instead of color" (partially implemented)
    • "To display gridlines"
  • Update topics
    • "To use a picture as the desktop background": add a third step? It's not quite that easy (at least in the browser)
    • "To create custom colors": way too OS-specific (unless I'm gonna emulate the color selection dialogue)
    • "To enlarge the size of the viewing area" (paint_enlarge_area.htm): jspaint currently allows you to draw while "Viewing the Bitmap"
    • "To zoom in or out of a picture", "To type and format text": "You can enter text into a picture only in Normal view." — jspaint handles this case (well, as well as it handles the Normal case)
  • Add topics
    • In "Tips and Tricks" (which is just a lame section)
    • Transparency
    • Multi-user / collaboration / "To share the document On-Line" or whatever
  • Index
  • Search
  • Keyboard support

Visual

  • Warning sign for "Save changes to X?" dialogue
  • Error symbol for error message dialogues
  • 3D inset border for inputs - SVG image-border?
  • The window close button uses text; font rendering is not consistent
  • The progress bar (Rendering GIF) is left native
  • Menu separator spacing
  • Minor color differences (0x808080 != 0x7b7b7b)
  • I want to give most things a revisit later on for Pixel Perfection
  • Dynamic cursors
    • Inverty fill bucket and airbrush cursors
    • Previewy brush and eraser cursors
  • Custom cursors in Edge; apparently they require .cur files? ugh
  • The canvas-area's border is different in Firefox and Edge from Chrome

Issues

  • "Quick Undo" stopped working in Chrome
  • Resizing the canvas or selection is broken when magnified
  • If you open an image it resets the zoom but if you're on the magnification tool it doesn't update the options
  • If you zoom in with the magnifier without previously changing the magnification on the toolbar, then switch back to the magnifier, the toolbar doesn't show any magnification highlighted
  • The TextBox contents move down and right when rasterizing
  • If you click on a menu item (up/down) and then move over to a menu item and click (up/down) it does nothing (and you can repeat this)
  • Can't glide thru tool options in Firefox, mobile Chrome; might be a pointer events spec interpretation issue, and it could easily be that the more technically correct browsers are where it's not working (Note: not a thing allowed by MS Paint)

Menus

  • Keyboard navigation of submenus
  • Alt (by itself)?

Components / Windows

  • Use the ghost when dragging on a component window's title bar

  • Make the component ghost account for the window's title bar

  • Handle windows going off the screen

Extended editing

  • Transparency

    • Color opacity slider
    • Toggle between blend and copy (overwrite) modes
    • Maybe equivalize any rgba(X, X, X, 0) in fill algorithm? There'd still be the possibility of 1/255th opacity pixels, but if you're creating colors from the combination of a color picker and an opacity slider, you might naturally introduce differing zero-opacity color values a lot.

  • Images with multiple sub-images

  • Online (multi-user) and local (single-user) sessions

    • See sessions.js
    • Deal with undo/redo for sessions
      • Particularly it might be helpful to undo to your last change, not just to right before it (by undoing it); this could automatically be the behavior of undo if there have been changes since your last change
    • Issues
      • You get interrupted if you try to make a selection when there's a selection
      • You get interrupted if you try to draw at the same time as another person (you basically have to take turns - lame!)
      • Free-form select can leave behind inverty brush (this should be fixed by improving how the selection tools work; the inverty-ness shouldn't be drawn to the main canvas in the first place)
      • Cursors from other users that go outside the parent can cause the page to be scrollable

Device support

  • Multi-touch devices

    • Two-finger drag to pan (the second touch cancels the default action just like normal)

  • Single-touch devices

    • Pan tool

  • Enlarge GUI elements on touch devices

    • Menus
    • Resize handles (at least functionally; in Win7 Paint, the hitbox size is much larger than the visible size, like maybe 32px)

  • You can't use the Eraser/Color Eraser tool as a "Color Eraser" without a secondary mouse button

  • Make sure anything that uses hovering is paralleled on mobile (tooltips, :hover effects)

  • Access to functionality that would normally require a keyboard (with a numpad!)

    • Numpad +/-: Increase/Decrease brush size, Double/Half selection size, ...
    • Shift (toggle): Proportional, Smear / Trail Selection, "Snap to 8 directions" / "Octosnap"?
    • Ctrl+Select: Crop tool or "Crop to selection" option

Tools

  • Free-Form Select

    • Passive: create no undoables until you do something
      • You should be able to make a selection, then change the secondary color, then drag the selection cutting it out with the color you selected
    • See On-Canvas Objects for Selection

  • Select

    • Passive: create no undoables until you do something
      • You should be able to make a selection, then change the secondary color, then drag the selection cutting it out with the color you selected
    • See On-Canvas Objects for Selection

  • Magnifier

    • Choose and preview viewport with rectangular cursor

  • Text

    • Underline
    • Expand box to make room for new lines
    • Minimum size of 3em x 1em
    • Store position of FontBox
    • Keep an old TextBox while drawing a new one
    • Save text and record transformations so the image can be saved as SVG (or HTML?) with invisible selectable transformed text elements?

  • Polygon

    • Issue with extra undoables
    • Close and finalize the polygon when switching to a different tool
    • Don't start making the polygon until you click and drag more than the auto-finalization distance
    • Cancel the polygon if you end up within the auto-finalization distance on the first gesture
    • Preview invertily (like Free-Form Select) when fill-only is selected for the shape style option
    • Investigate bug: jumping to 0, 0 (only saw it happen once so far; could it have had to do with the dialog box?)
    • Investigate bug: unclosed polygon (last segment of stroke) (only saw it happen once so far)

  • Options

    • In MS Paint, visual area =/= selection highlight area =/= clickable area

  • Shape Styles and Strokes

    • Shapes: respond to Ctrl (It's complicated)
    • Handle patterns (black and white mode)
      • Still needed for brush and fill and right click with the eraser tool (i.e. replace color)
      • Check to make sure patterns are aligned properly for all the tools
      • There's supposed to be a mapping between color values and pattern fills, used by the text tool and for the palette when switching between modes (colors should be kept between going to black and white mode and back)

On-Canvas Objects

  • Selection

    • Proportionally resize selection while holding Shift (or maybe by default? I feel like it should be the default, tbh.)
    • Don't cut until you drag or do something else (In MS Paint, you can make a selection, change the background color and drag it, leaving the new background color behind.)

  • TextBox

    • See Text tool

Desktop App (Electron)

Electron boilerplate stuff:

  • Set up Content-Security-Policy
  • Remember window position/state
  • Add icon to built executable
  • Set up autoupdating
  • Keep window hidden until loaded (show: false, ready-to-show)
  • Ideally name the executable jspaint.exe instead of JS Paint.exe

Functionality:

  • A dialog when closing
  • Subwindows as separate windows
  • Document recovery without having to know about File > Manage Storage - pop up contextually with a dialog when you need it
  • Show link URLs when you hover over them, in the status bar (because we have a status bar! haha) (there's this API: event: update-target-url, which gave me the idea, or it could be implemented with mouse events)
  • Recent files (could also be implemented for 98.js.org in the future)
  • Create a landing page / home page for the desktop app (similar to https://desktop.webamp.org/ or https://desktop.github.com/) - (perhaps https://desktop.jspaint.app/) - and/or for JS Paint in general (perhaps https://jspaint.app/about/)
  • Remove usage of prompt (and ideally alert/confirm too! shouldn't be using these anyways!)
  • macOS: open-file event, setRepresentedFilename, setDocumentEdited etc.
  • Windows: maybe handle session-end event and ask to save?
  • Detect if file changes on disk, ask if you want to reload it?

Also

  • Anything marked @TODO or @FIXME in the source code

  • See Issues on GitHub

  • Improve README

    • More images! Animated GIFs perhaps? :)

  • CSS

    • DRY, especially button styles - SVG border-image?
    • Comment stuff?
    • Use a CSS preprocessor
      • DRY
      • Clearer z-index handling?
      • Color-swap themes (maybe even load Windows theme files)
    • Stuff should go in an OS GUI library with themes for Windows 98 and other OSes

  • JS

    • Everything is in random files! "functions.js", REALLY?
    • $Window has a $Button facility; $FormWindow overrides it with essentially a better one
    • Image inversion code is duplicated in ChooserCanvas from tool-options.js but should go in image-manipulation.js
    • Make code clearer / improve code quality: https://codeclimate.com/github/1j01/jspaint

  • Images

    • Use a shared sprite sheet per theme (and optimize it I guess)