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implement stretchable icons for icon-text-fit (#8997)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| <!DOCTYPE html> | ||
| <html> | ||
| <head> | ||
| <title>Mapbox GL JS debug page</title> | ||
| <meta charset='utf-8'> | ||
| <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no"> | ||
| <link rel='stylesheet' href='../dist/mapbox-gl.css' /> | ||
| <style> | ||
| body { margin: 0; padding: 0; } | ||
| html, body, #map { height: 100%; } | ||
| </style> | ||
| </head> | ||
|
|
||
| <body> | ||
| <div id='map'></div> | ||
|
|
||
| <script src='../dist/mapbox-gl-dev.js'></script> | ||
| <script src='../debug/access_token_generated.js'></script> | ||
| <script> | ||
|
|
||
| var map = window.map = new mapboxgl.Map({ | ||
| container: 'map', | ||
| style: 'mapbox://styles/mapbox/streets-v10', | ||
| hash: true | ||
| }); | ||
|
|
||
| const border = 16; | ||
|
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| map.on('styleimagemissing', function(e) { | ||
| var id = e.id; // id of the missing image | ||
|
|
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| // check if this missing icon is one this function can generate | ||
| var prefix = 'stretchable-'; | ||
| if (id.indexOf(prefix) !== 0) return; | ||
|
|
||
| // extract the color from the id | ||
| var rgb1 = id.replace(prefix, '').split(',').map(Number); | ||
|
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| var width = 64; // The image will be 64 pixels square | ||
| var bytesPerPixel = 4; // Each pixel is represented by 4 bytes: red, green, blue, and alpha. | ||
| var data = new Uint8Array(width * width * bytesPerPixel); | ||
|
|
||
| const rgb2 = [rgb1[2], rgb1[1], rgb1[0]]; | ||
|
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| for (var x = 0; x < width; x++) { | ||
| for (var y = 0; y < width; y++) { | ||
| var offset = (y * width + x) * bytesPerPixel; | ||
|
|
||
| let rgb = | ||
| x < border || x + border > width - 1 || | ||
| y < border || y + border > width - 1 ? | ||
| rgb2 : | ||
| rgb1; | ||
|
|
||
| const half = width / 2; | ||
| if (Math.abs(x - half) + Math.abs(y - half) < border / 2) { | ||
| rgb = [255, 255, 255]; | ||
| } | ||
|
|
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| data[offset + 0] = rgb[0]; // red | ||
| data[offset + 1] = rgb[1]; // green | ||
| data[offset + 2] = rgb[2]; // blue | ||
| data[offset + 3] = 255; // alpha | ||
| } | ||
| } | ||
|
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| map.addImage(id, {width, height: width, data}, { | ||
| content: [border, border, width - border, width - border], | ||
| stretchX: [[border, (width - border) / 2], [(width + border) / 2, width - border]], | ||
| stretchY: [[border, (width - border) / 2], [(width + border) / 2, width - border]] | ||
| }); | ||
| }); | ||
|
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| map.on('load', function () { | ||
| map.addLayer({ | ||
| "id": "points", | ||
| "type": "symbol", | ||
| "source": { | ||
| "type": "geojson", | ||
| "data": { | ||
| "type": "FeatureCollection", | ||
| "features": [{ | ||
| "type": "Feature", | ||
| "geometry": { | ||
| "type": "Point", | ||
| "coordinates": [0, 0] | ||
| }, | ||
| "properties": { | ||
| "text": "ASDF", | ||
| "size": 36, | ||
| "color": "255,0,0" | ||
| } | ||
| }, { | ||
| "type": "Feature", | ||
| "geometry": { | ||
| "type": "Point", | ||
| "coordinates": [50, 0] | ||
| }, | ||
| "properties": { | ||
| "text": "ASDF \n - \nqwer", | ||
| "size": 24, | ||
| "color": "255,209,28" | ||
| } | ||
| }, { | ||
| "type": "Feature", | ||
| "geometry": { | ||
| "type": "Point", | ||
| "coordinates": [-50, 0] | ||
| }, | ||
| "properties": { | ||
| "text": "ASDF", | ||
| "size": 18, | ||
| "color": "242,127,32" | ||
| } | ||
| }] | ||
| } | ||
| }, | ||
| "layout": { | ||
| "text-field": ["get", "text"], | ||
| "icon-text-fit": "both", | ||
| "text-size": ["get", "size"], | ||
| "icon-image": ["concat", "stretchable-", ["get", "color"]] | ||
| } | ||
| }); | ||
| }); | ||
|
|
||
| </script> | ||
| </body> | ||
| </html> |
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This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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