From 2a1dcd97e954f158bfdcd5ca971685ff64d42582 Mon Sep 17 00:00:00 2001
From: sawka <mike.sawka@gmail.com>
Date: Sun, 5 Feb 2023 23:01:27 -0800
Subject: [PATCH] add stub imagerenderer code

---
 src/imagerenderer.ts | 71 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 src/imagerenderer.ts

diff --git a/src/imagerenderer.ts b/src/imagerenderer.ts
new file mode 100644
index 00000000..eab7214c
--- /dev/null
+++ b/src/imagerenderer.ts
@@ -0,0 +1,71 @@
+import * as mobx from "mobx";
+import {WindowSize} from "./types";
+
+const InitialSize = 10*1024;
+const IncreaseFactor = 1.5;
+
+class ImageRenderer {
+    dataSize : number;
+    imageData : Uint8Array;
+    brokenData : boolean;
+    isDone : mobx.IObservableValue<boolean>;
+
+    constructor() {
+        this._resetData();
+        this.isDone = mobx.observable.box(false, {name: "isDone"});
+    }
+
+    _resetData() {
+        this.dataSize = 0;
+        this.imageData = new Uint8Array(InitialSize);
+        this.brokenData = false;
+    }
+
+    dispose() : void {
+        this._resetData();
+    }
+    
+    reload(delayMs : number) : void {
+    }
+
+    _growArray(minSize : number) : void {
+        let newSize = Math.round(this.imageData.length * IncreaseFactor);
+        if (newSize < minSize) {
+            newSize = minSize;
+        }
+        let newData = new Uint8Array(newSize);
+        newData.set(this.imageData);
+        this.imageData = newData;
+    }
+
+    receiveData(pos : number, data : Uint8Array, reason? : string) : void {
+        if (pos != this.dataSize) {
+            this.brokenData = true;
+            return;
+        }
+        if (this.dataSize + data.length > this.imageData.length) {
+            this._growArray(this.dataSize + data.length);
+        }
+        this.imageData.set(data, pos);
+        this.dataSize += data.length;
+    }
+
+    cmdDone() : void {
+    }
+
+    resizeWindow(size : WindowSize) : void {
+    }
+    
+    resizeCols(cols : number) : void {
+    }
+    
+    giveFocus() : void {
+    }
+    
+    getUsedRows() : number {
+        return -1;
+    }
+}
+
+export {ImageRenderer};
+