geoman-leaflet-extend

v0.0.2

Published

3 years ago

A Leaflet Plugin For Editing Geometry Layers in Leaflet 1.0

Downloads

0High
0Medium
0Low

leaflet geoman polygon management geometry editing map data map overlay polygon geojson leaflet-draw data-field-geojson ui-leaflet-draw

👉 Live Demo 👈

Demo

Using Leaflet-Geoman in production?

Please consider sponsoring its development

Leaflet-Geoman Pro ⭐

Features marked with ⭐ in this documentation are available in Leaflet-Geoman Pro. Purchase Pro or get in touch

Documentation

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/leaflet-geoman-free@latest/dist/leaflet-geoman.css" />

<script src="https://unpkg.com/@geoman-io/leaflet-geoman-free@latest/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.setStyle({pmIgnore: false});
// layer.options.pmIgnore = false; // If the layer is a LayerGroup / FeatureGroup / GeoJSON this line is needed too
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:

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. | | rotateMode | true | Adds a button to rotate 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 ⭐. |
| splitMode | true | Adds a button to toggle the Split Mode for all layers ⭐. |
| scaleMode | true | Adds a button to toggle the Scale Mode for all layers ⭐. |

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:

See the available options in the table below.

| Option | Default | :-------------------- | :---------------- | snappable | true | snapDistance | 20 | snapMiddle | false | snapSegment | true | requireSnapToFinish | false | tooltips | true | allowSelfIntersection | true | templineStyle | { | hintlineStyle | { | pathOptions | null | markerStyle | { | cursorMarker | true | finishOn | null | hideMiddleMarkers | false | minRadiusCircle | null | maxRadiusCircle | null | minRadiusCircleMarker | null | maxRadiusCircleMarker | null | editable | false | markerEditable | true | continueDrawing | false | rectangleAngle | 0 | layersToCut | [] | Description | -------------------- | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Enable snapping to other layers vertices for precision drawing. Can be disabled by holding the ALT key. | | The distance to another vertex when a snap should happen. | | Allow snapping in the middle of two vertices (middleMarker). | | Allow snapping between two vertices. | | Require the last point of a shape to be snapped. | | Show helpful tooltips for your user. | | Allow self intersections. | color: 'red' }, | Leaflet path options for the lines between drawn vertices/markers. | color: 'red', dashArray: [5, 5] } | Leaflet path options for the helper line between last drawn vertex and the cursor. | | Leaflet path options for the drawn layer (Only for L.Path layers). | draggable: true } | Leaflet marker options (only for drawing markers). | | Show a marker at the cursor. | | Leaflet layer event to finish the drawn shape, like 'dblclick'. Here's a list. snap is also an option for Line, Polygon and Rectangle. | | Hide the middle Markers in Edit Mode from Polyline and Polygon. | | Set the min radius of a Circle. | | Set the max radius of a Circle. | | Set the min radius of a CircleMarker when editable is active. | | Set the max radius of a CircleMarker when editable is active. | | Makes a CircleMarker editable like a Circle. | | Markers and CircleMarkers are editable during the draw-session (you can drag them around immediately after drawing them). | / 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. | | Rectangle can drawn with a rotation angle 0-360 degrees | | Cut-Mode: Only the passed layers can be cut. Cutted layers are removed from the Array until no layers are left anymore and cutting is working on all layers again. |

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:

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:

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:

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:

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. | | syncLayersOnDrag | false | Defines which layers should dragged with this layer together. true syncs all layers in the same LayerGroup(s) or you pass an Array of layers to sync. | | allowEditing | true | Edit-Mode for the layer can disabled (pm.enable()). | | allowRemoval | true | Removing can be disabled for the layer. | | allowCutting | true | Layer can be prevented from cutting. | | allowRotation | true | Layer can be prevented from rotation. | | draggable | true | Dragging can be disabled for the layer. | | addVertexOn | click | Leaflet layer event to add a vertex to a Line or Polygon, like 'dblclick'. Here's a list. | | addVertexValidation | undefined | A function for validation if a vertex (of a Line / Polygon) is allowed to add. It passes a object with [layer, marker, event}. For example to check if the layer has a certain property or if the Ctrl key is pressed. | | removeVertexOn | contextmenu | Leaflet layer event to remove a vertex from a Line or Polygon, like 'dblclick'. Here's a list. | | removeVertexValidation | undefined | A function for validation if a vertex (of a Line / Polygon) is allowed to remove. It passes a object with [layer, marker, event}. For example to check if the layer has a certain property or if the Ctrl key is pressed. | | moveVertexValidation | undefined | A function for validation if a vertex / helper-marker is allowed to move / drag. It passes a object with [layer, marker, event}. For example to check if the layer has a certain property or if the Ctrl key is pressed. | | 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. ⭐ | | centerScaling | true | Scale origin is the center, else it is the opposite corner. If false Alt-Key can be used. Scale Mode. ⭐ | | uniformScaling | true | Width and height are scaled with the same ratio. If false Shift-Key can be used. Scale Mode. ⭐ |

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:

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();

Or you enable dragging for a specific layer:

layer.pm.enableLayerDrag();

The following methods are available on layer.pm:

The following methods are available on map.pm:

The following events are available on a layer instance:

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:

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:

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

cut polygon

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. If the option layersToCut: [layer1, layer2] is passed, only this certain layers will be cutted.

The following methods are available on map.pm:

The following events are available on a layer instance:

The following events are available on a map instance:

Rotation Mode

Rotation Feature

The rotation is clockwise. It starts in the North with 0° and goes over East (90°) and South (180°) to West (270°). The rotation center is the center (layer.getCenter()) of a Polygon with the LatLngs of the layer.

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

map.pm.enableGlobalRotateMode();

The following methods are available on map.pm:

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

The following events are available on a layer instance:

The following events are available on a map instance:

Split Mode ⭐

Split Mode Demo

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:

The following events are available on a layer instance:

| Event | Params | Description | Output | | :------- | :----- | :-------------------------------- | :----------------------------------------------- | | pm:split | e | Fired when the layer being split. Returns a LayerGroup containing all resulting layers in layers. | shape, splitLayer, layers, originalLayer |

The following events are available on a map instance:

Scale Mode ⭐

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

map.pm.enableGlobalScaleMode();

With the option centerScaling the scale origin cen be the center of the layer or the opposite corner of the dragged marker. If false Alt-Key can be used. The option uniformScaling the scales the width and the height with the same ratio. If false Shift-Key can be used.

The following methods are available on map.pm:

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

| Method | Returns | Description |
| :--------------------------- | :-------- | :---------------------------------------------------------------------------------------------------------------------------- |
| enableScale() | - | Enables Scale Mode on the layer. |
| disableScale() | - | Disables Scale Mode on the layer. | | scaleEnabled() | Boolean | Returns if Scale Mode is enabled for the layer. |
| scaleLayer(percent) | - | Scale the layer by x percent. Also an Object with {w: width, h: height} can be passed. Scale up > 0 , scale down < 0. |

The following events are available on a layer instance:

The following events are available on a map instance:

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 programmatically.

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.
Snapping can be disabled for layers with the layer option snapIgnore: true. With snapIgnore: false it will be always snappable, also if pmIgnore is set. Can also be disabled by holding the ALT key.

Snapping Options

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 ⭐

Pinning Option

Measurement ⭐

Measurement Demo

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.

LayerGroup

Leaflet-Geoman can only work correct with L.FeatureGroup and L.GeoJSON (the extended versions of L.LayerGroup) we need the events layeradd and layerremove.

The following methods are available for LayerGroups on layergroup.pm:

| Method

Published

Vulnerabilities

Links

Maintainers

Keywords

Readme

👉 Live Demo 👈

Using Leaflet-Geoman in production?

Leaflet-Geoman Pro ⭐

Documentation

Installation

Migrate from Leaflet.PM

Install via npm

Install Manually

Include via CDN

Include as ES6 Module

Getting Started

Init Leaflet-Geoman

Opt-In

Leaflet-Geoman Toolbar

Draw Mode

Edit Mode

Drag Mode

Removal Mode

Cut Mode

Rotation Mode

Split Mode ⭐

Scale Mode ⭐

Options

Snapping

Pinning ⭐

Measurement ⭐

LayerGroup