Leaflet-Geoman

Leaflet Plugin For Creating And Editing Geometry Layers
Draw, Edit, Drag, Cut, Split⭐, Measure⭐, Snap and Pin⭐ Layers
Supports Markers, CircleMarkers, Polylines, Polygons, Circles, Rectangles, ImageOverlays, LayerGroups, GeoJSON, MultiLineStrings and MultiPolygons

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Documentation

• Installation
• Getting Started
• Draw Mode
• Edit Mode
• Drag Mode
• Removal Mode
• Cut Mode
• Options
• Customization
• Toolbar
• Need a feature? | Existing Feature Requests

Installation

Migrate from Leaflet.PM

npm uninstall leaflet.pm  
npm i @geoman-io/leaflet-geoman-free  

That's it.

Install via npm

npm i @geoman-io/leaflet-geoman-free  

Install Manually

Download
leaflet-geoman.css and
leaflet-geoman.min.js
and include them in your project.

Include via CDN

CSS

  
<link rel="stylesheet" href="https://unpkg.com/@geoman-io/[email protected]/dist/leaflet-geoman.css" />  

JS

<script src="https://unpkg.com/@geoman-io/[email protected]/dist/leaflet-geoman.min.js"></script>  

Include as ES6 Module

import '@geoman-io/leaflet-geoman-free';  
import '@geoman-io/leaflet-geoman-free/dist/leaflet-geoman.css';  

Getting Started

Init leaflet-geoman

Just include leaflet-geoman.min.js right after Leaflet. It initializes itself. If
you want certain layers to be ignored by leaflet-geoman, pass pmIgnore: true to
their options when creating them. Example:

L.marker([51.50915, -0.096112], { pmIgnore: true }).addTo(map);  

Enable leaflet-geoman on an ignored layer:

layer.options.pmIgnore = false;
L.PM.reInitLayer(layer);  

If Opt-In (look below) is true, a layers pmIgnore property has to be set to false to get initiated.

Opt-In

If you want to use leaflet-geoman as opt-in, call the following function right after importing:

L.PM.setOptIn(true);  

And to disable it:

L.PM.setOptIn(false);  

All layers will be ignored by leaflet-geoman, unless you specify pmIgnore: false on a layer:

L.marker([51.50915, -0.096112], { pmIgnore: false }).addTo(map);  

leaflet-geoman Toolbar

You can add a toolbar to the map to use leaflet-geoman features via a user interface.

// add leaflet-geoman controls with some options to the map  
map.pm.addControls({  
  position: 'topleft',  
  drawCircle: false,  
});  

The following methods are available on map.pm:

Method	Returns	Description
addControls(options)	-	Adds the Toolbar to the map. The options are optional.
removeControls()	-	Removes the Toolbar from the map.
toggleControls()	-	Toggle the visiblity of the Toolbar.
controlsVisible()	Boolean	Returns true if the Toolbar is visible on the map.

See the available options in the table below.

Option	Default	Description
position	'topleft'	toolbar position, possible values are 'topleft', 'topright', 'bottomleft', 'bottomright'
positions	Object	the position of each block (draw, edit, custom, options⭐) can be customized. If not set, the value from position is taken. Default: {draw: '', edit: '', options: '', custom: ''} Block Position
drawMarker	true	adds button to draw Markers
drawCircleMarker	true	adds button to draw CircleMarkers
drawPolyline	true	adds button to draw Line
drawRectangle	true	adds button to draw Rectangle
drawPolygon	true	adds button to draw Polygon
drawCircle	true	adds button to draw Circle
editMode	true	adds button to toggle edit mode for all layers
dragMode	true	adds button to toggle drag mode for all layers
cutPolygon	true	adds button to cut a hole in a polygon or line
removalMode	true	adds a button to remove layers
oneBlock	false	all buttons will be displayed as one block Customize Controls
drawControls	true	shows all draw buttons / buttons in the draw block
editControls	true	shows all edit buttons / buttons in the edit block
customControls	true	shows all buttons in the custom block
optionsControls	true	shows all options buttons / buttons in the option block ⭐
pinningOption	true	adds a button to toggle the Pinning Option ⭐
snappingOption	true	adds a button to toggle the Snapping Option ⭐

To pass options to the buttons you have two ways:

// make polygon not snappable during draw  
map.pm.enableDraw('Polygon',{ snappable: false }); 
map.pm.disableDraw();

// make all layers not snappable during draw  
map.pm.setGlobalOptions({ snappable: false }); 

The options will persist, even when the mode is enabled/disabled via the toolbar.

All available options for drawing and editing are specified in the sections below.

Draw Mode

Use Draw Mode on a map like this

// enable polygon draw mode  
map.pm.enableDraw('Polygon', {  
  snappable: true,  
  snapDistance: 20,  
});  
  
// disable draw mode  
map.pm.disableDraw();  

Currently available shapes are Marker, CircleMarker, Circle, Line, Rectangle, Polygon and Cut.

The following methods are available on map.pm:

Method	Returns	Description
enableDraw(shape,options)	-	Enable Draw Mode with the passed shape. The options are optional.
disableDraw()	-	Disable Draw Mode.
Draw.getShapes()	Array	Array of available shapes.
Draw.getActiveShape()	String	Returns the active shape.
globalDrawModeEnabled()	Boolean	Returns true if global Draw Mode is enabled. false when disabled.
setPathOptions(options, optionsModifier)	-	Customize the style of the drawn layer. Only for L.Path layers. Shapes can be excluded with a ignoreShapes array in optionsModifier Details
setGlobalOptions(options)	-	Set globalOptions and apply them.
applyGlobalOptions()	-	Apply the current globalOptions to all existing layers.
getGlobalOptions()	Object	Returns the globalOptions.
getGeomanLayers(Boolean)	Array	Returns all Geoman layers on the map as array. Pass true to get a L.FeatureGroup.
getGeomanDrawLayers(Boolean)	Array	Returns all drawn Geoman layers on the map as array. Pass true to get a L.FeatureGroup.

See the available options in the table below.

Option	Default	Description
snappable	true	enable snapping to other layers vertices for precision drawing. Can be disabled by holding the ALT key.
snapDistance	20	the distance to another vertex when a snap should happen
snapMiddle	false	allow snapping in the middle of two vertices (middleMarker)
tooltips	true	show helpful tooltips for your user
allowSelfIntersection	true	allow self intersections
templineStyle	{ color: 'red' },	leaflet path options for the lines between drawn vertices/markers.
hintlineStyle	{ color: 'red', dashArray: [5, 5] }	leaflet path options for the helper line between last drawn vertex and the cursor.
pathOptions	null	leaflet path options for the drawn layer (Only for L.Path layers).
markerStyle	{ draggable: true }	leaflet marker options (only for drawing markers).
cursorMarker	true	show a marker at the cursor
finishOn	null	leaflet layer event to finish the drawn shape, like 'dblclick'. Here's a list.
hideMiddleMarkers	false	hide the middle Markers in edit mode from Polyline and Polygon.
minRadiusCircle	null	set the min radius of a Circle.
maxRadiusCircle	null	set the max radius of a Circle.
minRadiusCircleMarker	null	set the min radius of a CircleMarker when editable is active.
maxRadiusCircleMarker	null	set the max radius of a CircleMarker when editable is active.
editable	false	makes a CircleMarker editable like a Circle
markerEditable	true	Markers and CircleMarkers are editable during the draw-session (you can drag them around immediately after drawing them)
continueDrawing	false / true	Draw-Mode stays enabled after finishing a layer to immediately draw the next layer. Defaults to true for Markers and CircleMarkers and false for all other layers.

This options can only set over map.pm.setGlobalOptions({}):

Option	Default	Description
layerGroup	map	add the created layers to a layergroup instead to the map.

You can listen to map events to hook into the drawing procedure like this:

map.on('pm:drawstart', e => {  
  console.log(e);  
});  

Here's a list of map events you can listen to:

Event	Params	Description	Output
pm:globaldrawmodetoggled	e	Fired when Drawing Mode is toggled	enabled, shape, map
pm:drawstart	e	Called when drawing mode is enabled. Payload includes the shape type and working layer	shape, workingLayer
pm:drawend	e	Called when drawing mode is disabled. Payload includes the shape type.	shape
pm:create	e	Called when a shape is drawn/finished. Payload includes shape type and the drawn layer	shape, layer

There are also several events for layers during draw. Register an event like this:

// listen to vertexes being added to currently drawn layer (called workingLayer)  
map.on('pm:drawstart', ({ workingLayer }) => {  
 workingLayer.on('pm:vertexadded', e => {  
  console.log(e);  
  });
});

Here's a list of layer events you can listen to:

Event	Params	Description	Output
pm:vertexadded	e	Called when a new vertex is added. Payload includes the new vertex, it's marker, index, working layer and shape type	shape, workingLayer, marker, latlng
pm:snapdrag	e	Fired during a marker move/drag. Payload includes info about involved layers and snapping calculation.	shape, distance, layer = workingLayer, marker, layerInteractedWith, segment, snapLatLng
pm:snap	e	Fired when a vertex is snapped. Payload is the same as in snapdrag	shape, distance, layer = workingLayer, marker, layerInteractedWith, segment, snapLatLng
pm:unsnap	e	Fired when a vertex is unsnapped. Payload is the same as in snapdrag	shape, distance, layer = workingLayer, marker, layerInteractedWith, segment, snapLatLng
pm:centerplaced	e	Called when the center of a circle is placed/moved.	shape, workingLayer, latlng

For making the snapping to other layers selective, you can add the "snapIgnore" option to your layers to disable the snapping to them during drawing.

//This layer will be ignored by the snapping engine during drawing  
L.geoJSON(data,{  
  snapIgnore: true
});

Edit Mode

You can enable Edit Mode for all layers on a map like this:

// enable global edit mode  
map.pm.enableGlobalEditMode(options);  

The following methods are available on map.pm:

Method	Returns	Description
enableGlobalEditMode(options)	-	Enables global edit mode.
disableGlobalEditMode()	-	Disables global edit mode.
toggleGlobalEditMode(options)	-	Toggles global edit mode.
globalEditModeEnabled()	Boolean	Returns true if global edit mode is enabled. false when disabled.

Enable Edit Mode only for one layer:

// enable edit mode  
layer.pm.enable({  
  allowSelfIntersection: false,  
});  

The following methods are available for layers under layer.pm:

Method	Returns	Description
enable(options)	-	Enables edit mode. The passed options are preserved, even when the mode is enabled via the Toolbar. options is optional
disable()	-	Disables edit mode.
toggleEdit(options)	-	Toggles edit mode. Passed options are preserved. options is optional
enabled()	Boolean	Returns true if edit mode is enabled. false when disabled.
hasSelfIntersection()	Boolean	Returns true if Line or Polygon has a self intersection.

See the available options in the table below.

Option	Default	Description
snappable	true	Enable snapping to other layers vertices for precision drawing. Can be disabled by holding the ALT key.
snapDistance	20	The distance to another vertex when a snap should happen.
allowSelfIntersection	true	Allow/Disallow self-intersections on polygons and polylines.
allowSelfIntersectionEdit	false	Allow/Disallow to change vertices they are connected to a intersecting line. Only working if allowSelfIntersection is true and the layer is already self-intersecting while enabling edit mode.
preventMarkerRemoval	false	Disable the removal of markers/vertexes via right click.
removeLayerBelowMinVertexCount	true	If true, vertex removal that cause a layer to fall below their minimum required vertices will remove the entire layer. If false, these vertices can't be removed. Minimum vertices are 2 for Lines and 3 for Polygons.
limitMarkersToCount	-1	Shows only n markers closest to the cursor. Use -1 for no limit
limitMarkersToZoom	-1	Shows markers when under the given zoom level ⭐
limitMarkersToViewport	false	Shows only markers in the viewport ⭐
limitMarkersToClick	false	Shows markers only after the layer was clicked ⭐
pinning	false	Pin shared vertices/markers together during edit ⭐. Details

You can listen to events related to editing on events like this:

// listen to when a layer is changed in edit mode  
layer.on('pm:edit', e => {  
  console.log(e);  
});  

The following events are available on a layer instance:

Event	Params	Description	Output
pm:edit	e	Fired when a layer is edited.	layer, shape
pm:update	e	Fired when edit mode is disabled and a layer is edited and its coordinates have changed.	layer, shape
pm:enable	e	Fired when edit mode on a layer is enabled	layer, shape
pm:disable	e	Fired when edit mode on a layer is disabled	layer, shape
pm:vertexadded	e	Fired when a vertex is added	layer, indexPath, latlng, marker, shape
pm:vertexremoved	e	Fired when a vertex is removed	layer, indexPath, marker, shape
pm:vertexclick	e	Fired when a vertex is clicked	layer, indexPath, markerEvent, shape
pm:markerdragstart	e	Fired when dragging of a marker which corresponds to a vertex starts	layer, indexPath, markerEvent, shape
pm:markerdrag	e	Fired when dragging a vertex-marker	layer, indexPath, markerEvent, shape
pm:markerdragend	e	Fired when dragging of a vertex-marker ends	layer, indexPath, markerEvent, shape
pm:snapdrag	e	Fired during a marker move/drag. Payload includes info about involved layers and snapping calculation	shape, distance, layer = workingLayer, marker, layerInteractedWith, segment, snapLatLng
pm:snap	e	Fired when a vertex-marker is snapped to another vertex. Also fired on the marker itself.	shape, distance, layer = workingLayer, marker, layerInteractedWith, segment, snapLatLng
pm:unsnap	e	Fired when a vertex-marker is unsnapped from a vertex. Also fired on the marker itself.	shape, distance, layer = workingLayer, marker, layerInteractedWith, segment, snapLatLng
pm:intersect	e	When allowSelfIntersection: false, this event is fired as soon as a self-intersection is detected.	layer, intersection, shape
pm:centerplaced	e	Fired when the center of a circle is moved	layer, latlng, shape

The following events are available on a map instance:

Event	Params	Description	Output
pm:globaleditmodetoggled	e	Fired when Edit Mode is toggled.	enabled, map

You can also listen to specific edit mode events on the map instance like this:

map.on('pm:globaleditmodetoggled', e => {  
  console.log(e);  
});  

Drag Mode

You can enable Drag Mode for all layers on a map like this:

// enable drag mode like this:  
map.pm.enableGlobalDragMode();  

The following methods are available on map.pm:

Method	Returns	Description
enableGlobalDragMode()	-	Enables global drag mode.
disableGlobalDragMode()	-	Disables global drag mode.
toggleGlobalDragMode()	-	Toggles global drag mode.
globalDragModeEnabled()	Boolean	Returns true if global drag mode is enabled. false when disabled.

The following events are available on a layer instance:

Event	Params	Description	Output
pm:dragstart	e	Fired when a layer starts being dragged.	layer, shape
pm:drag	e	Fired when a layer is dragged.	layer, containerPoint,latlng, layerPoint,originalEvent, shape
pm:dragend	e	Fired when a layer stops being dragged.	layer, shape

The following events are available on a map instance:

Event	Params	Description	Output
pm:globaldragmodetoggled	e	Fired when Drag Mode is toggled.	enabled, map

You can also listen to specific drag mode events on the map instance like this:

map.on('pm:globaldragmodetoggled', e => {  
  console.log(e);  
});  

Removal Mode

You can enable Removal Mode for all layers on a map like this:

// enable removal mode like this:  
map.pm.enableGlobalRemovalMode();  

The following methods are available on map.pm:

Method	Returns	Description
enableGlobalRemovalMode()	-	Enables global removal mode.
disableGlobalRemovalMode()	-	Disables global removal mode.
toggleGlobalRemovalMode()	-	Toggles global removal mode.
globalRemovalModeEnabled()	Boolean	Returns true if global removal mode is enabled. false when disabled.

The following events are available on a layer instance:

Event	Params	Description	Output
pm:remove	e	Fired when a layer is removed via Removal Mode	layer, shape

The following events are available on a map instance:

Event	Params	Description	Output
pm:globalremovalmodetoggled	e	Fired when Removal Mode is toggled	enabled, map
pm:remove	e	Fired when a layer is removed via Removal Mode	layer, shape
layerremove	e	Standard Leaflet event. Fired when any layer is removed.	layer

You can also listen to specific removal mode events on the map instance like this:

map.on('pm:globalremovalmodetoggled', e => {  
  console.log(e);  
});  

Cut Mode

Enables drawing for the shape "Cut" to draw a polygon that gets subtracted from
all underlying polygons. This way you can create holes, cut polygons or polylines in half or
remove parts of it.

Important: the cutted layer will be replaced, not updated. Listen to the
pm:cut event to update your layer references in your code. The pm:cut event
will provide you with the original layer and returns the resulting
layer(s) that is/are added to the map as a Polygon / MultiPolygon or Polyline / MultiPolyline.

// enable cutting mode  
map.pm.enableGlobalCutMode({  
  allowSelfIntersection: false,  
});  

Available options are the same as in Draw Mode.

The following methods are available on map.pm:

Method	Returns	Description
enableGlobalCutMode(options)	-	Enable Cut Mode.
disableGlobalCutMode()	-	Disable Cut Mode
toggleGlobalCutMode(options)	-	Toggle Cut Mode
globalCutModeEnabled()	Boolean	Returns true if global cut mode is enabled. false when disabled.

The following events are available on a layer instance:

Event	Params	Description	Output
pm:cut	e	Fired when the layer being cut	shape, layer, originalLayer
pm:edit	e	Fired when a layer is edited / cut	layer, shape

The following events are available on a map instance:

Event	Params	Description	Output
pm:globalcutmodetoggled	e	Fired when Cut Mode is toggled	enabled, map
pm:cut	e	Fired when any layer is being cut	shape, layer, originalLayer

Split Mode ⭐

Enable drawing for the shape "Split" to draw a line that splits all underlying polygons and polylines.

Important: the splitted layer will be replaced, not updated. Listen to the pm:split event to update your layer references in your code. The pm:split event will provide you with the original layer and returns the resulting layer(s) that is/are added to the map as a Polygon / MultiPolygon or Polyline / MultiPolyline.

// enable cutting mode
map.pm.enableGlobalSplitMode({
  allowSelfIntersection: false,
});

Available options are the same as in Draw Mode and in table below:

Option	Default	Description
splitOnlyMarkedLayers	false	If it is set to false layers can be excluded with the option splitMark: false. Set it to true to enable splitting only for the layers with the option splitMark: true.

The following methods are available on map.pm:

Method	Returns	Description
enableGlobalSplitMode(options)	-	Enable Split Mode.
disableGlobalSplitMode()	-	Disable Split Mode
toggleGlobalSplitMode(options)	-	Toggle Split Mode
globalSplitModeEnabled()	Boolean	Returns true if global Split Mode is enabled. false when disabled.

The following events are available on a layer instance:

Event	Params	Description	Output
pm:split	e	Fired when the layer being split	shape, splitLayer, layers, originalLayer

The following events are available on a map instance:

Event	Params	Description	Output
pm:globalsplitmodetoggled	e	Fired when Split Mode is toggled	enabled, map
pm:split	e	Fired when any layer is being split	shape, splitLayer, layers, originalLayer

Options

You have many options available when drawing and editing your layers (described above).
You can set the options per layer as described above, or you can set them globally for all layers. This is especially useful when you use the toolbar and can't change the options programatically.

Examples:

layer.pm.enable({ pinning: true, snappable: false })  

map.pm.setGlobalOptions({ pinning: true, snappable: false })  

The following options are additionally to the Draw and Edit Mode options.

Option	Default	Description
snappingOrder	Array	Prioritize the order of snapping. Default: ['Marker','CircleMarker','Circle','Line','Polygon','Rectangle']
layerGroup	map	add the created layers to a layergroup instead to the map.
panes	Object	Defines in which panes the layers and helper vertices are created. Default: { vertexPane: 'markerPane', layerPane: 'overlayPane', markerPane: 'markerPane' }

Some details about a few more powerful options:

Snapping

Snap the dragged marker/vertex to other layers for precision drawing.

Pinning ⭐

When dragging a vertex/marker, you can pin all other Markers/Vertices that have the same latlng to the dragged marker. Exclusive for Leaflet-Geoman Pro ⭐

Measurement ⭐

Calculates the measurement of a layer while drawing and editing. Exclusive for Leaflet-Geoman Pro ⭐

map.pm.setGlobalOptions({ measurements: { measurement: true, displayFormat: 'metric', ... } })

See the available options in the table below.

Option	Default	Description
measurement	true	Enable measurement calculation
showTooltip	true	Shows the tooltip during draw and edit
showTooltipOnHover	true	Shows the tooltip when hovering a finished layer
displayFormat	metric	Displayed format in the tooltip metric or imperial
totalLength	true	Shows the total length in the tooltip Line
segmentLength	true	Shows the segment length in the tooltip Line, Polygon
area	true	Shows the area in the tooltip Polygon, Rectangle, Circle, CircleMarker
radius	true	Shows the radius in the tooltip Circle, CircleMarker
perimeter	true	Shows the perimeter in the tooltip Polygon, Rectangle, Circle, CircleMarker
height	true	Shows the height in the tooltip Rectangle
width	true	Shows the width in the tooltip Rectangle
coordinates	true	Shows the coordinates in the tooltip Marker, CircleMarker and the current dragged marker while drawing / editing

Customize

Customize Language

Change the language of user-facing copy in leaflet-geoman

map.pm.setLang('de');  

Currently available languages are da, de, el, en, es, fa, fr, hu, id, it, nl, no, pl, pt_br, ro, ru, sv, zh and zh_tw.
To add translations to the plugin, you can add a translation file via Pull Request.

You can also provide your own custom translations.

const customTranslation = {  
  tooltips: {  
    placeMarker: 'Custom Marker Translation',  
  }
};  
  
map.pm.setLang('customName', customTranslation, 'en');  

The 3rd parameter is the fallback language in case you only want to override a few Strings.
See the english translation file for all available strings.

The following events are available on a map instance:

Event	Params	Description	Output
pm:langchange	e	Fired when language is changed	activeLang, oldLang, fallback, translations

Customize Style

To customize the style of the drawn layer with leaflet options, you can either
pass the options to enableDraw or set the options generally:

map.pm.setPathOptions({  
  color: 'orange',  
  fillColor: 'green',  
  fillOpacity: 0.4,  
});  

If you want to exclude shapes from receiving these path options, use the second parameter like this:

map.pm.setPathOptions({color: 'orange'}, {
  ignoreShapes: ['Circle', 'Rectangle']  
});  

Toolbar

The following methods are available on map.pm.Toolbar:

Method	Returns	Description
changeControlOrder(order)	-	Pass an array of button names to reorder the buttons in the Toolbar
getControlOrder()	Array	Current order of the buttons in the Toolbar
setBlockPosition(block,position)	-	The position of a block (draw, edit, custom, options⭐) in the Toolbar can be changed. If not set, the value from position of the Toolbar is taken. Details
getBlockPositions()	Object	Returns a Object with the positions for all blocks
createCustomControl(options)	-	To add a custom Control to the Toolbar. Details
copyDrawControl(instance, options)	Object	Creates a copy of a draw Control. Returns the drawInstance and the control.
changeActionsOfControl(name, actions)	-	Change the actions of an existing button.

Customize Controls

There are 4 control blocks in the Toolbar: draw, edit, custom and options⭐
You can disable / enable entire blocks. To display the Toolbar as one block instead of 4, use oneBlock: true.

map.pm.addControls({  
 drawControls: true, 
 editControls: false, 
 optionsControls: true, 
 customControls: true, 
 oneBlock: false 
})

Reorder the buttons with

map.pm.Toolbar.changeControlOrder(['drawCircle', 'drawRectangle', 'removalMode', 'editMode']);  

Receive the current order with

map.pm.Toolbar.getControlOrder();  

Toolbar Block Position

You can set different positions per block draw, edit, options⭐, custom:

Possible values are 'topleft', 'topright', 'bottomleft', 'bottomright'

map.pm.addControls({  
  positions: {  
    draw: 'topright',  
    edit: 'topleft',  
  }
});  

map.pm.Toolbar.setBlockPosition('draw','topright');  

map.pm.Toolbar.getBlockPositions();  

Adding New/Custom Controls

// add a new custom control  
map.pm.Toolbar.createCustomControl(options)  

Option	Default	Description
name	Required	Name of the control
block	''	block of the control. draw, edit, custom, options⭐
title	''	Text showing when you hover the control
className	''	CSS class with the Icon
onClick	-	Function fired when clicking the control
afterClick	-	Function fired after clicking the control
actions	[ ]	Action that appears as tooltip. Look under Actions for more information
toggle	true	Control can be toggled
disabled	false	Control is disabled

Inherit from an Existing Control

This effectively copies an existing control that you can customize.

// copy a rectangle and customize its name, block, title and actions  
map.pm.Toolbar.copyDrawControl('Rectangle',{  
  name:'RectangleCopy',  
  block: 'custom',  
  title: 'Display text on hover button',  
  actions: actions  
});  

Actions

You can add your own actions to existing or custom buttons.

Here, we configure 3 separate actions in an array.

// creates new actions  
const actions = [ 
  // uses the default 'cancel' action 
  'cancel',    
  // creates a new action that has text, no click event  
  { text: 'Custom text, no click' },  
  // creates a new action with text and a click event 
  { text: 'click me', onClick: () => { alert('🙋‍♂️') }  
}]  

Default actions available are: cancel, removeLastVertex, finish, finishMode.

Change actions of an existing button:

map.pm.Toolbar.changeActionsOfControl('Rectangle', actions)  

Pass actions to your custom buttons through the actions property mentioned under Inherit from an Existing Control

The following events are available on a map instance:

Event	Params	Description	Output
pm:buttonclick	e	Fired when a Toolbar button is clicked	btnName, button
pm:actionclick	e	Fired when a Toolbar action is clicked	text, action, btnName, button

Feature Requests

I'm adopting the Issue Management of lodash which means, feature requests get the "Feature Request" Label and then get closed.
You can upvote existing feature requests (or create new ones). Upvotes make me see how much a feature is requested and prioritize their implementation.
Please see the existing Feature Requests here and upvote if you want them to be implemented.

Developing

Clone the repository and then install all npm packages:

npm install  

Compile and run dev watch version:

npm run start  

Compile and run build version:

npm run prepare  

Run cypress test:

npm run test  

Open cypress window:

npm run cypress  

Open eslint check:

npm run lint  

Take a look into CONTRIBUTING

Credit

As I never built a leaflet plugin before, I looked heavily into the code of
leaflet.draw to find out how to do stuff. So don't be surprised to see some
familiar code.

I also took a hard look at the great
L.GeometryUtil for some
of my helper functions.