From 175d3fca55bd1838203d67884bb5206597e68b60 Mon Sep 17 00:00:00 2001
From: bobzel <zzzman@gmail.com>
Date: Fri, 20 Nov 2020 19:23:02 -0500
Subject: added a preliminary Layer mechanism.  changed documentDecrations to
 not go out of the mainDocument area.  changed parentActive to work
 "recursively" through stacks of background documents.

---
 .../collectionFreeForm/CollectionFreeFormView.tsx  | 29 ++++++++++++----------
 1 file changed, 16 insertions(+), 13 deletions(-)

(limited to 'src/client/views/collections/collectionFreeForm/CollectionFreeFormView.tsx')

diff --git a/src/client/views/collections/collectionFreeForm/CollectionFreeFormView.tsx b/src/client/views/collections/collectionFreeForm/CollectionFreeFormView.tsx
index 19dc97399..77c29d6ef 100644
--- a/src/client/views/collections/collectionFreeForm/CollectionFreeFormView.tsx
+++ b/src/client/views/collections/collectionFreeForm/CollectionFreeFormView.tsx
@@ -73,6 +73,7 @@ export type collectionFreeformViewProps = {
     forceScaling?: boolean; // whether to force scaling of content (needed by ImageBox)
     viewDefDivClick?: ScriptField;
     childPointerEvents?: boolean;
+    parentActive: (outsideReaction: boolean) => boolean;
     scaleField?: string;
     noOverlay?: boolean; // used to suppress docs in the overlay (z) layer (ie, for minimap since overlay doesn't scale)
 };
@@ -235,7 +236,7 @@ export class CollectionFreeFormView extends CollectionSubView<PanZoomDocument, P
             const nd = [Doc.NativeWidth(layoutDoc), Doc.NativeHeight(layoutDoc)];
             layoutDoc._width = NumCast(layoutDoc._width, 300);
             layoutDoc._height = NumCast(layoutDoc._height, nd[0] && nd[1] ? nd[1] / nd[0] * NumCast(layoutDoc._width) : 300);
-            !d._isBackground && (d._raiseWhenDragged === undefined ? Doc.UserDoc()._raiseWhenDragged : d._raiseWhenDragged) && (d.zIndex = zsorted.length + 1 + i); // bringToFront
+            !Cast(d, listSpec("string"), []).includes("background") && (d._raiseWhenDragged === undefined ? Doc.UserDoc()._raiseWhenDragged : d._raiseWhenDragged) && (d.zIndex = zsorted.length + 1 + i); // bringToFront
         }
 
         (docDragData.droppedDocuments.length === 1 || de.shiftKey) && this.updateClusterDocs(docDragData.droppedDocuments);
@@ -274,7 +275,6 @@ export class CollectionFreeFormView extends CollectionSubView<PanZoomDocument, P
 
     @action
     onInternalDrop = (e: Event, de: DragManager.DropEvent) => {
-        // if (this.props.Document._isBackground) return false;
         const [xp, yp] = this.getTransform().transformPoint(de.x, de.y);
         if (this.isAnnotationOverlay !== true && de.complete.linkDragData) {
             return this.internalLinkDrop(e, de, de.complete.linkDragData, xp, yp);
@@ -390,8 +390,8 @@ export class CollectionFreeFormView extends CollectionSubView<PanZoomDocument, P
         }
     }
 
-    getClusterColor = (doc: Opt<Doc>) => {
-        let clusterColor = this.props.backgroundColor?.(doc, this.props.renderDepth + 1);
+    getClusterColor = (doc: Opt<Doc>, renderDepth: number, layerProvider?: (doc: Doc, assign?: boolean) => boolean) => {
+        let clusterColor = this.props.backgroundColor?.(doc, this.props.renderDepth + 1, layerProvider);
         const cluster = NumCast(doc?.cluster);
         if (this.Document._useClusters) {
             if (this._clusterSets.length <= cluster) {
@@ -402,8 +402,8 @@ export class CollectionFreeFormView extends CollectionSubView<PanZoomDocument, P
                 clusterColor = colors[cluster % colors.length];
                 const set = this._clusterSets[cluster]?.filter(s => s.backgroundColor);
                 // override the cluster color with an explicitly set color on a non-background document.  then override that with an explicitly set color on a background document
-                set && set.filter(s => !s._isBackground).map(s => clusterColor = StrCast(s.backgroundColor));
-                set && set.filter(s => s._isBackground).map(s => clusterColor = StrCast(s.backgroundColor));
+                set && set.filter(s => !Cast(s.layers, listSpec("string"), []).includes("background")).map(s => clusterColor = StrCast(s.backgroundColor));
+                set && set.filter(s => Cast(s.layers, listSpec("string"), []).includes("background")).map(s => clusterColor = StrCast(s.backgroundColor));
             }
         }
         return clusterColor;
@@ -861,7 +861,7 @@ export class CollectionFreeFormView extends CollectionSubView<PanZoomDocument, P
     }
 
     bringToFront = action((doc: Doc, sendToBack?: boolean) => {
-        if (sendToBack || doc._isBackground) {
+        if (sendToBack || Cast(doc.layers, listSpec("string"), []).includes("background")) {
             doc.zIndex = 0;
         } else if (doc.isInkMask) {
             doc.zIndex = 5000;
@@ -976,11 +976,11 @@ export class CollectionFreeFormView extends CollectionSubView<PanZoomDocument, P
     }
 
     @computed get libraryPath() { return this.props.LibraryPath ? [...this.props.LibraryPath, this.props.Document] : []; }
-    @computed get backgroundActive() { return this.layoutDoc._isBackground && (this.props.ContainingCollectionView?.active() || this.props.active()); }
+    @computed get backgroundActive() { return this.props.layerProvider?.(this.layoutDoc) === false && (this.props.ContainingCollectionView?.active() || this.props.active()); }
     onChildClickHandler = () => this.props.childClickScript || ScriptCast(this.Document.onChildClick);
     onChildDoubleClickHandler = () => this.props.childDoubleClickScript || ScriptCast(this.Document.onChildDoubleClick);
     backgroundHalo = () => BoolCast(this.Document._useClusters);
-    parentActive = (outsideReaction: boolean) => this.props.active(outsideReaction) || this.backgroundActive || this.layoutDoc._viewType === CollectionViewType.Pile ? true : false;
+    parentActive = (outsideReaction: boolean) => this.props.active(outsideReaction) || this.props.parentActive?.(outsideReaction) || this.backgroundActive || this.layoutDoc._viewType === CollectionViewType.Pile ? true : false;
     getChildDocumentViewProps(childLayout: Doc, childData?: Doc): DocumentViewProps {
         return {
             addDocument: this.props.addDocument,
@@ -988,6 +988,7 @@ export class CollectionFreeFormView extends CollectionSubView<PanZoomDocument, P
             moveDocument: this.props.moveDocument,
             pinToPres: this.props.pinToPres,
             whenActiveChanged: this.props.whenActiveChanged,
+            parentActive: this.parentActive,
             fitToBox: false,
             DataDoc: childData,
             Document: childLayout,
@@ -1014,7 +1015,6 @@ export class CollectionFreeFormView extends CollectionSubView<PanZoomDocument, P
             focus: this.focusDocument,
             backgroundColor: this.getClusterColor,
             backgroundHalo: this.backgroundHalo,
-            parentActive: this.parentActive,
             bringToFront: this.bringToFront,
             addDocTab: this.addDocTab,
         };
@@ -1122,7 +1122,6 @@ export class CollectionFreeFormView extends CollectionSubView<PanZoomDocument, P
     @computed get doInternalLayoutComputation() {
         TraceMobx();
 
-
         const newPool = new Map<string, PoolData>();
         const engine = this.props.layoutEngine?.() || StrCast(this.layoutDoc._layoutEngine);
         switch (engine) {
@@ -1161,6 +1160,7 @@ export class CollectionFreeFormView extends CollectionSubView<PanZoomDocument, P
                     replica={entry[1].replica}
                     dataProvider={this.childDataProvider}
                     sizeProvider={this.childSizeProvider}
+                    layerProvider={this.props.layerProvider}
                     pointerEvents={this.backgroundActive || this.props.childPointerEvents ?
                         "all" :
                         (this.props.viewDefDivClick || (engine === "pass" && !this.props.isSelected(true))) ? "none" : undefined}
@@ -1380,7 +1380,7 @@ export class CollectionFreeFormView extends CollectionSubView<PanZoomDocument, P
         };
         const snappableDocs: Doc[] = [];  // the set of documents in the visible viewport that we will try to snap to;
         const otherBounds = { left: this.panX(), top: this.panY(), width: Math.abs(size[0]), height: Math.abs(size[1]) };
-        this.getActiveDocuments().filter(doc => !doc._isBackground && doc.z === undefined).map(doc => isDocInView(doc, selRect));  // first see if there are any foreground docs to snap to
+        this.getActiveDocuments().filter(doc => !Cast(doc.layers, listSpec("string"), []).includes("background") && doc.z === undefined).map(doc => isDocInView(doc, selRect));  // first see if there are any foreground docs to snap to
         !snappableDocs.length && this.getActiveDocuments().filter(doc => doc.z === undefined).map(doc => isDocInView(doc, selRect)); // if not, see if there are background docs to snap to
         !snappableDocs.length && this.getActiveDocuments().filter(doc => doc.z !== undefined).map(doc => isDocInView(doc, otherBounds)); // if not, then why not snap to floating docs
 
@@ -1491,6 +1491,7 @@ export class CollectionFreeFormView extends CollectionSubView<PanZoomDocument, P
             <div ref={this._marqueeRef}>
                 {this.layoutDoc["_backgroundGrid-show"] ? this.grid : (null)}
                 <CollectionFreeFormViewPannableContents
+                    isAnnotationOverlay={this.isAnnotationOverlay}
                     centeringShiftX={this.centeringShiftX}
                     centeringShiftY={this.centeringShiftY}
                     presPaths={BoolCast(this.Document.presPathView)}
@@ -1515,7 +1516,7 @@ export class CollectionFreeFormView extends CollectionSubView<PanZoomDocument, P
         const wscale = nw ? this.props.PanelWidth() / nw : 1;
         return wscale < hscale ? wscale : hscale;
     }
-    @computed get backgroundEvents() { return this.layoutDoc._isBackground && SnappingManager.GetIsDragging(); }
+    @computed get backgroundEvents() { return this.props.layerProvider?.(this.layoutDoc) === false && SnappingManager.GetIsDragging(); }
 
     render() {
         TraceMobx();
@@ -1584,6 +1585,7 @@ interface CollectionFreeFormViewPannableContentsProps {
     presPaths?: boolean;
     progressivize?: boolean;
     presPinView?: boolean;
+    isAnnotationOverlay: boolean | undefined;
 }
 
 @observer
@@ -1729,6 +1731,7 @@ class CollectionFreeFormViewPannableContents extends React.Component<CollectionF
             style={{
                 transform: `translate(${cenx}px, ${ceny}px) scale(${zoom}) translate(${panx}px, ${pany}px)`,
                 transition: this.props.transition,
+                width: this.props.isAnnotationOverlay ? undefined : 0, // if not an overlay, then this will be the size of the collection, but panning and zooming will move it outside the visible border of the collection and make it selectable.  This problem shows up after zooming/panning on a background collection -- you can drag the collection by clicking on apparently empty space outside the collection
                 //willChange: "transform"
             }}>
             {this.props.children()}
-- 
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