From fdc0e0e157d70fdcc569525db58d8e6e642c0041 Mon Sep 17 00:00:00 2001
From: bob <bcz@cs.brown.edu>
Date: Mon, 3 Feb 2020 18:13:36 -0500
Subject: fixed performance of layoutengines.

---
 src/client/views/nodes/ContentFittingDocumentView.tsx | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

(limited to 'src/client/views/nodes')

diff --git a/src/client/views/nodes/ContentFittingDocumentView.tsx b/src/client/views/nodes/ContentFittingDocumentView.tsx
index 51c8e00da..bd1b6166f 100644
--- a/src/client/views/nodes/ContentFittingDocumentView.tsx
+++ b/src/client/views/nodes/ContentFittingDocumentView.tsx
@@ -45,13 +45,14 @@ export class ContentFittingDocumentView extends React.Component<ContentFittingDo
     private get layoutDoc() { return this.props.Document && Doc.Layout(this.props.Document); }
     private get nativeWidth() { return NumCast(this.layoutDoc?._nativeWidth, this.props.PanelWidth()); }
     private get nativeHeight() { return NumCast(this.layoutDoc?._nativeHeight, this.props.PanelHeight()); }
-    private contentScaling = () => {
+    @computed get scaling() {
         const wscale = this.props.PanelWidth() / (this.nativeWidth || this.props.PanelWidth() || 1);
         if (wscale * this.nativeHeight > this.props.PanelHeight()) {
             return (this.props.PanelHeight() / (this.nativeHeight || this.props.PanelHeight() || 1)) || 1;
         }
         return wscale || 1;
     }
+    private contentScaling = () => this.scaling;
 
     @undoBatch
     @action
@@ -67,8 +68,12 @@ export class ContentFittingDocumentView extends React.Component<ContentFittingDo
         }
         return true;
     }
-    private PanelWidth = () => this.nativeWidth && (!this.props.Document || !this.props.Document._fitWidth) ? this.nativeWidth * this.contentScaling() : this.props.PanelWidth();
-    private PanelHeight = () => this.nativeHeight && (!this.props.Document || !this.props.Document._fitWidth) ? this.nativeHeight * this.contentScaling() : this.props.PanelHeight();
+    private PanelWidth = () => this.panelWidth;
+    private PanelHeight = () => this.panelHeight;;
+
+    @computed get panelWidth() { return this.nativeWidth && (!this.props.Document || !this.props.Document._fitWidth) ? this.nativeWidth * this.contentScaling() : this.props.PanelWidth(); }
+    @computed get panelHeight() { return this.nativeHeight && (!this.props.Document || !this.props.Document._fitWidth) ? this.nativeHeight * this.contentScaling() : this.props.PanelHeight(); }
+
     private getTransform = () => this.props.getTransform().translate(-this.centeringOffset, -this.centeringYOffset).scale(1 / this.contentScaling());
     private get centeringOffset() { return this.nativeWidth && (!this.props.Document || !this.props.Document._fitWidth) ? (this.props.PanelWidth() - this.nativeWidth * this.contentScaling()) / 2 : 0; }
     private get centeringYOffset() { return Math.abs(this.centeringOffset) < 0.001 ? (this.props.PanelHeight() - this.nativeHeight * this.contentScaling()) / 2 : 0; }
-- 
cgit v1.2.3-70-g09d2