ReadingRuler

Based on this script: https://greasyfork.org/en/scripts/372448-reading-ruler/code This reading ruler will aid you on reading texts on the internet It will place a semi-transparent line on your screen, just hit the combination ctrl + r on windows and mac (not the command button but the control button) to activate the ruler, hit the same configuration to remove the ruler This idea come from the reddit user /u/VectorLightning And the thread can be found here: https://www.reddit.com/r/SomebodyMakeThis/comments/9huwbw/smt_a_firefox_addon_that_adds_a_horizontal/ I hope you find this extension useful Releases Notes: V4.1 Bug fixes - Fixed the keyboard shortcut not working. The root cause was a race condition in the background service worker settings hadn't finished loading from storage when the shortcut was pressed, causing a silent crash that prevented the ruler from ever appearing. - Fixed the extension not working on tabs that were already open before the extension was installed or updated. The content script is now injected on-demand when needed, so there is no longer a need to reload existing tabs. - Fixed ruler opacity not saving correctly - the value from the slider was being stored as a string instead of a number. - Fixed a background script security issue where the message handler could invoke arbitrary functions. UI - Redesigned the popup with a clean, minimal layout - Keyboard shortcuts are now displayed with proper kbd key styling. - Opacity slider now shows the current value as you drag it. - Save button gives visual confirmation when settings are saved. - Removed all external dependencies (Bootstrap, jQuery, Google Fonts, bootstrap-toggle) - the popup no longer requires an internet connection to render correctly and loads instantly. V4.0 Redo of the extension, all the features introduced on V3.1 were causing a lot of bug, surprisingly there are still people using and finding this extension, so I decided to simplify it and make it work on all websites. I hope this update fixes all major issues reported on the feedback page. Here a list of changes: - You are not able to set a shortcut anymore, for now these are set by default. - Windows: ALT + SHIFT + 3 - Mac: Command + SHIFT + U - Color and opacity are still options that you can change - Add save button to apply changes done to the ruler color and opacity - Fix issue with ruler not working on multiple websites - Simplified core mechanism to allow extension to always work V3.1 Lots of improvements, extension should now always work and should not be invisible - fix problem where ruler would not show on screen (for real this time!) - new popup layout with 2 new options - you now can choose a color for your ruler - you can now set how visible you want your ruler to be - update core code - remove itself when its orphaned - create functions to prevent references on event handlers - remove unnecessary calls to background script - overall improve code to work better v3.0.1 - Avoid exceptions when extension is updated - Increase z index of ruler to try to push to the foreground v3.0 - Code rewrite to make extension function properly - Update manifest to V3 - Fix extension so it should only show the ruler when active - Drop support for Alt modifier key, you can now only combine CTRL, SHIFT and a keyboard key - Drop badge text since it was not working anymore v 2.2 - Fix issue with ruler not showing when pressing the toggle combination v 2.1 - Add badge to extension icon to let you know the tool is active v 2.0 - Add options page - Allow user to choose from using CTRL, ALT and SHIFT plus a key - Update and rewrite the entire code to be more OOP