fixed problems with link drawing to doc centers, and wraparound panning caused by zoomBasis

1 files changed, 12 insertions, 10 deletions

diff --git a/src/client/views/collections/collectionFreeForm/CollectionFreeFormView.tsx b/src/client/views/collections/collectionFreeForm/CollectionFreeFormView.tsx
index ebe1df4de..778071126 100644
--- a/src/client/views/collections/collectionFreeForm/CollectionFreeFormView.tsx
+++ b/src/client/views/collections/collectionFreeForm/CollectionFreeFormView.tsx
@@ -135,14 +135,14 @@ export class CollectionFreeFormView extends CollectionSubView(PanZoomDocument) {
             let [dx, dy] = this.getTransform().transformDirection(e.clientX - this._lastX, e.clientY - this._lastY);
             if (!this.isAnnotationOverlay) {
                 let minx = docs.length ? NumCast(docs[0].x) : 0;
-                let maxx = docs.length ? NumCast(docs[0].width) / NumCast(docs[0].zoomBasis) + minx : minx;
+                let maxx = docs.length ? NumCast(docs[0].width) / NumCast(docs[0].zoomBasis, 1) + minx : minx;
                 let miny = docs.length ? NumCast(docs[0].y) : 0;
-                let maxy = docs.length ? NumCast(docs[0].height) / NumCast(docs[0].zoomBasis) + miny : miny;
+                let maxy = docs.length ? NumCast(docs[0].height) / NumCast(docs[0].zoomBasis, 1) + miny : miny;
                 let ranges = docs.filter(doc => doc).reduce((range, doc) => {
                     let x = NumCast(doc.x);
-                    let xe = x + NumCast(doc.width) / NumCast(doc.zoomBasis);
+                    let xe = x + NumCast(doc.width) / NumCast(doc.zoomBasis, 1);
                     let y = NumCast(doc.y);
-                    let ye = y + NumCast(doc.height) / NumCast(doc.zoomBasis);
+                    let ye = y + NumCast(doc.height) / NumCast(doc.zoomBasis, 1);
                     return [[range[0][0] > x ? x : range[0][0], range[0][1] < xe ? xe : range[0][1]],
                     [range[1][0] > y ? y : range[1][0], range[1][1] < ye ? ye : range[1][1]]];
                 }, [[minx, maxx], [miny, maxy]]);
@@ -155,12 +155,14 @@ export class CollectionFreeFormView extends CollectionSubView(PanZoomDocument) {
                     });
                 }
 
-                let panelwidth = this._pwidth / this.zoomScaling() / 2;
-                let panelheight = this._pheight / this.zoomScaling() / 2;
-                if (x - dx < ranges[0][0] - panelwidth) x = ranges[0][1] + panelwidth + dx;
-                if (x - dx > ranges[0][1] + panelwidth) x = ranges[0][0] - panelwidth + dx;
-                if (y - dy < ranges[1][0] - panelheight) y = ranges[1][1] + panelheight + dy;
-                if (y - dy > ranges[1][1] + panelheight) y = ranges[1][0] - panelheight + dy;
+                let panelDim = this.props.ScreenToLocalTransform().transformDirection(this._pwidth / this.zoomScaling(),
+                    this._pheight / this.zoomScaling());
+                let panelwidth = panelDim[0];
+                let panelheight = panelDim[1];
+                if (ranges[0][0] - dx > (this.panX() + panelwidth / 2)) x = ranges[0][1] + panelwidth / 2;
+                if (ranges[0][1] - dx < (this.panX() - panelwidth / 2)) x = ranges[0][0] - panelwidth / 2;
+                if (ranges[1][0] - dy > (this.panY() + panelheight / 2)) y = ranges[1][1] + panelheight / 2;
+                if (ranges[1][1] - dy < (this.panY() - panelheight / 2)) y = ranges[1][0] - panelheight / 2;
             }
             this.setPan(x - dx, y - dy);
             this._lastX = e.pageX;