get input working, fix currentrowheight constant

src/main.tsx

@@ -179,7 +179,7 @@ class LineCmd extends React.Component<{sw : ScreenWindow, line : LineType}, {}>
             return <div className="line line-invalid">[cmd not found '{line.cmdid}']</div>;
         }
         let termLoaded = this.termLoaded.get();
-        let cellHeightPx = 17;
+        let cellHeightPx = 16;
         let usedRows = cmd.getUsedRows(sw.screenId, sw.windowId);
         let totalHeight = cellHeightPx * usedRows;
         let remote = model.getRemote(cmd.remoteId);

src/model.ts

@@ -55,7 +55,7 @@ class Cmd {
             console.log("term-wrap already exists for", screenId, windowId);
             return;
         }
-        termWrap = new TermWrap(elem, this.sessionId, this.cmdId, 0, this.getTermOpts(), this.handleKey);
+        termWrap = new TermWrap(elem, this.sessionId, this.cmdId, 0, this.getTermOpts(), this.handleKey.bind(this));
         this.instances[screenId + "/" + windowId] = termWrap;
         return;
     }

src/term.ts

@@ -52,7 +52,7 @@ class TermWrap {
             this.atRowMax = true;
             this.usedRows = mobx.observable.box(termOpts.rows);
         }
-        this.terminal = new Terminal({rows: termOpts.rows, cols: termOpts.cols, theme: {foreground: "#d3d7cf"}});
+        this.terminal = new Terminal({rows: termOpts.rows, cols: termOpts.cols, fontSize: 14, theme: {foreground: "#d3d7cf"}});
         this.terminal.open(elem);
         if (keyHandler != null) {
             this.terminal.onKey(keyHandler);
@@ -66,6 +66,10 @@ class TermWrap {
         this.reloadTerminal(0);
     }
 
+    getFontHeight() : number {
+        return this.terminal._core.viewport._currentRowHeight;
+    }
+
     dispose() {
         if (this.terminal != null) {
             this.terminal.dispose();