added animation of background color, and streamlined/extended a variety of props-related things.

2 files changed, 25 insertions, 1 deletions

diff --git a/src/fields/Doc.ts b/src/fields/Doc.ts
index 8d56ebf8c..612fc7fb8 100644
--- a/src/fields/Doc.ts
+++ b/src/fields/Doc.ts
@@ -1389,6 +1389,20 @@ export namespace Doc {
         return !curPres ? false : DocListCast(curPres.data).findIndex(val => Doc.AreProtosEqual(val, doc)) !== -1;
     }
 
+    export function styleFromLayoutString(rootDoc: Doc, layoutDoc: Doc, props: any, scale: number) {
+        const style: { [key: string]: any } = {};
+        const divKeys = ['width', 'height', 'fontSize', 'transform', 'left', 'backgroundColor', 'left', 'right', 'top', 'bottom', 'pointerEvents', 'position'];
+        const replacer = (match: any, expr: string, offset: any, string: any) => {
+            // bcz: this executes a script to convert a property expression string:  { script }  into a value
+            return ScriptField.MakeFunction(expr, { self: Doc.name, this: Doc.name, scale: 'number' })?.script.run({ self: rootDoc, this: layoutDoc, scale }).result?.toString() ?? '';
+        };
+        divKeys.map((prop: string) => {
+            const p = props[prop];
+            typeof p === 'string' && (style[prop] = p?.replace(/{([^.'][^}']+)}/g, replacer));
+        });
+        return style;
+    }
+
     // prettier-ignore
     export function toIcon(doc?: Doc, isOpen?: boolean) {
         switch (StrCast(doc?.type)) {
diff --git a/src/fields/ScriptField.ts b/src/fields/ScriptField.ts
index 68fb45987..0fd992d3b 100644
--- a/src/fields/ScriptField.ts
+++ b/src/fields/ScriptField.ts
@@ -9,7 +9,7 @@ import { Doc, Field, Opt } from './Doc';
 import { Copy, Id, ToScriptString, ToString } from './FieldSymbols';
 import { List } from './List';
 import { ObjectField } from './ObjectField';
-import { Cast, NumCast } from './Types';
+import { Cast, NumCast, StrCast } from './Types';
 import { Plugins } from './util';
 
 function optional(propSchema: PropSchema) {
@@ -199,6 +199,16 @@ export class ComputedField extends ScriptField {
         const setField = ScriptField.CompileScript(`setIndexVal(self['${fieldKey}-indexed'], self.${interpolatorKey}, value)`, { value: 'any' }, true, {});
         return getField.compiled ? new ComputedField(getField, setField?.compiled ? setField : undefined) : undefined;
     }
+    public static MakeInterpolatedString(fieldKey: string, interpolatorKey: string, doc: Doc, curTimecode: number) {
+        if (!doc[`${fieldKey}-indexed`]) {
+            const flist = new List<string>(numberRange(curTimecode + 1).map(i => undefined) as any as string[]);
+            flist[curTimecode] = StrCast(doc[fieldKey]);
+            doc[`${fieldKey}-indexed`] = flist;
+        }
+        const getField = ScriptField.CompileScript(`getIndexVal(self['${fieldKey}-indexed'], self.${interpolatorKey})`, {}, true, {});
+        const setField = ScriptField.CompileScript(`setIndexVal(self['${fieldKey}-indexed'], self.${interpolatorKey}, value)`, { value: 'any' }, true, {});
+        return getField.compiled ? new ComputedField(getField, setField?.compiled ? setField : undefined) : undefined;
+    }
 }
 export namespace ComputedField {
     let useComputed = true;