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perspective image display

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This commit is contained in:
Jan Prochazka
2022-09-15 16:48:57 +02:00
parent fe61e5e631
commit 4ced94f070
3 changed files with 42 additions and 4 deletions
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22
packages/tools/src/stringTools.ts
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@@ -46,6 +46,9 @@ export function stringifyCellValue(value) {
}
export function safeJsonParse(json, defaultValue?, logError = false) {
if (_isArray(json) || _isPlainObject(json)) {
return json;
}
try {
return JSON.parse(json);
} catch (err) {
@@ -93,3 +96,22 @@ export function isWktGeometry(s) {
/^POINT\s*\(|^LINESTRING\s*\(|^POLYGON\s*\(|^MULTIPOINT\s*\(|^MULTILINESTRING\s*\(|^MULTIPOLYGON\s*\(|^GEOMCOLLECTION\s*\(|^GEOMETRYCOLLECTION\s*\(/
);
}
export function arrayBufferToBase64(buffer) {
var binary = '';
var bytes = [].slice.call(new Uint8Array(buffer));
bytes.forEach(b => (binary += String.fromCharCode(b)));
return btoa(binary);
}
export function getAsImageSrc(obj) {
if (obj?.type == 'Buffer' && _isArray(obj?.data)) {
return `data:image/png;base64, ${arrayBufferToBase64(obj?.data)}`;
}
if (_isString(obj) && (obj.startsWith('http://') || obj.startsWith('https://'))) {
return obj;
}
return null;
}