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Add download-as-svg options

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This commit is contained in:
Pieter Vander Vennet 2022-03-18 01:21:00 +01:00
parent e6997f9b9d
commit 308ab74a08
9 changed files with 266 additions and 58 deletions
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172
UI/BigComponents/DownloadPanel.ts
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@ -14,6 +14,9 @@ import SimpleMetaTagger from "../../Logic/SimpleMetaTagger";
import LayoutConfig from "../../Models/ThemeConfig/LayoutConfig";
import {BBox} from "../../Logic/BBox";
import FilteredLayer, {FilterState} from "../../Models/FilteredLayer";
import geojson2svg from "geojson2svg"
import Constants from "../../Models/Constants";
import LayerConfig from "../../Models/ThemeConfig/LayerConfig";
export class DownloadPanel extends Toggle {
@ -21,9 +24,9 @@ export class DownloadPanel extends Toggle {
filteredLayers: UIEventSource<FilteredLayer[]>
featurePipeline: FeaturePipeline,
layoutToUse: LayoutConfig,
currentBounds: UIEventSource<BBox>
}) {
currentBounds: UIEventSource<BBox>,
}) {
const t = Translations.t.general.download
const name = State.state.layoutToUse.id;
@ -35,7 +38,7 @@ export class DownloadPanel extends Toggle {
const buttonGeoJson = new SubtleButton(Svg.floppy_ui(),
new Combine([t.downloadGeojson.SetClass("font-bold"),
t.downloadGeoJsonHelper]).SetClass("flex flex-col"))
.OnClickWithLoading(t.exporting,async () => {
.OnClickWithLoading(t.exporting, async () => {
const geojson = DownloadPanel.getCleanGeoJson(state, metaisIncluded.data)
Utils.offerContentsAsDownloadableFile(JSON.stringify(geojson, null, " "),
`MapComplete_${name}_export_${new Date().toISOString().substr(0, 19)}.geojson`, {
@ -57,10 +60,31 @@ export class DownloadPanel extends Toggle {
});
})
const buttonSvg = new SubtleButton(Svg.floppy_ui(), new Combine(
[t.downloadAsSvg.SetClass("font-bold"),
t.downloadAsSvgHelper]).SetClass("flex flex-col"))
.OnClickWithLoading(t.exporting, async () => {
const geojson = DownloadPanel.getCleanGeoJsonPerLayer(state, metaisIncluded.data)
const leafletdiv = document.getElementById("leafletDiv")
const csv = DownloadPanel.asSvg(geojson,
{
layers: state.filteredLayers.data.map(l => l.layerDef),
mapExtent: state.currentBounds.data,
width: leafletdiv.offsetWidth,
height: leafletdiv.offsetHeight
})
Utils.offerContentsAsDownloadableFile(csv,
`MapComplete_${name}_export_${new Date().toISOString().substr(0, 19)}.svg`, {
mimetype: "image/svg+xml"
});
})
const downloadButtons = new Combine(
[new Title(t.title),
buttonGeoJson,
buttonCSV,
buttonSvg,
includeMetaToggle,
t.licenseInfo.SetClass("link-underline")])
.SetClass("w-full flex flex-col border-4 border-gray-300 rounded-3xl p-4")
@ -71,41 +95,152 @@ export class DownloadPanel extends Toggle {
state.featurePipeline.somethingLoaded)
}
/**
* Converts a geojson to an SVG
*
* const feature = {
* "type": "Feature",
* "properties": {},
* "geometry": {
* "type": "LineString",
* "coordinates": [
* [-180, 80],
* [180, -80]
* ]
* }
* }
* const perLayer = new Map<string, any[]>([["testlayer", [feature]]])
* DownloadPanel.asSvg(perLayer).replace(/\n/g, "") // => `<svg width="1000px" height="1000px" viewBox="0 0 1000 1000"> <g id="testlayer" inkscape:groupmode="layer" inkscape:label="testlayer"> <path d="M0,27.77777777777778 1000,472.22222222222223" style="fill:none;stroke-width:1" stroke="#ff0000"/> </g></svg>`
*/
public static asSvg(perLayer: Map<string, any[]>,
options?:
{
layers?: LayerConfig[],
width?: 1000 | number,
height?: 1000 | number,
mapExtent?: BBox
unit?: "px" | "mm" | string
}) {
options = options ?? {}
const w = options.width ?? 1000
const h = options.height ?? 1000
const unit = options.unit ?? "px"
const mapExtent = {left: -180, bottom: -90, right: 180, top: 90}
if (options.mapExtent !== undefined) {
const bbox = options.mapExtent
mapExtent.left = bbox.minLon
mapExtent.right = bbox.maxLon
mapExtent.bottom = bbox.minLat
mapExtent.top = bbox.maxLat
}
const elements: string [] = []
for (const layer of Array.from(perLayer.keys())) {
const features = perLayer.get(layer)
if(features.length === 0){
continue
}
const layerDef = options?.layers?.find(l => l.id === layer)
const rendering = layerDef?.lineRendering[0]
const converter = geojson2svg({
viewportSize: {width: w, height: h},
mapExtent,
output: 'svg',
attributes:[
{
property: "style",
type:'static',
value: "fill:none;stroke-width:1"
},
{
property: 'properties.stroke',
type:'dynamic',
key: 'stroke'
}
]
});
for (const feature of features) {
const stroke = rendering?.color?.GetRenderValue(feature.properties)?.txt ?? "#ff0000"
const color = Utils.colorAsHex( Utils.color(stroke))
feature.properties.stroke = color
}
const groupPaths: string[] = converter.convert({type: "FeatureCollection", features})
const group = ` <g id="${layer}" inkscape:groupmode="layer" inkscape:label="${layer}">\n` +
groupPaths.map(p => " " + p).join("\n")
+ "\n </g>"
elements.push(group)
}
const header = `<svg width="${w}${unit}" height="${h}${unit}" viewBox="0 0 ${w} ${h}">`
return header + "\n" + elements.join("\n") + "\n</svg>"
}
/**
* Gets all geojson as geojson feature
* @param state
* @param includeMetaData
* @private
*/
private static getCleanGeoJson(state: {
featurePipeline: FeaturePipeline,
currentBounds: UIEventSource<BBox>,
filteredLayers: UIEventSource<FilteredLayer[]>
}, includeMetaData: boolean) {
const perLayer = DownloadPanel.getCleanGeoJsonPerLayer(state, includeMetaData)
const features = [].concat(...Array.from(perLayer.values()))
return {
type: "FeatureCollection",
features
}
}
const resultFeatures = []
private static getCleanGeoJsonPerLayer(state: {
featurePipeline: FeaturePipeline,
currentBounds: UIEventSource<BBox>,
filteredLayers: UIEventSource<FilteredLayer[]>
}, includeMetaData: boolean): Map<string, any[]> /*{layerId --> geojsonFeatures[]}*/ {
const perLayer = new Map<string, any[]>();
const neededLayers = state.filteredLayers.data.map(l => l.layerDef.id)
const bbox = state.currentBounds.data
const featureList = state.featurePipeline.GetAllFeaturesAndMetaWithin(bbox, new Set(neededLayers));
for (const tile of featureList) {
outer : for (const tile of featureList) {
if(Constants.priviliged_layers.indexOf(tile.layer) >= 0){
continue
}
const layer = state.filteredLayers.data.find(fl => fl.layerDef.id === tile.layer)
if (!perLayer.has(tile.layer)) {
perLayer.set(tile.layer, [])
}
const featureList = perLayer.get(tile.layer)
const filters = layer.appliedFilters.data
for (const feature of tile.features) {
if(!bbox.overlapsWith(BBox.get(feature))){
if (!bbox.overlapsWith(BBox.get(feature))) {
continue
}
if (filters !== undefined) {
let featureDoesMatchAllFilters = true;
for (let key of Array.from(filters.keys())) {
const filter: FilterState = filters.get(key)
if(filter?.currentFilter === undefined){
if (filter?.currentFilter === undefined) {
continue
}
if (!filter.currentFilter.matchesProperties(feature.properties)) {
featureDoesMatchAllFilters = false;
break
continue outer;
}
}
if(!featureDoesMatchAllFilters){
continue; // the outer loop
}
}
const cleaned = {
@ -130,14 +265,11 @@ export class DownloadPanel extends Toggle {
delete feature.properties[key]
}
resultFeatures.push(feature)
featureList.push(feature)
}
}
return {
type: "FeatureCollection",
features: resultFeatures
}
return perLayer
}
}