Mostly working for reflowing to smaller

2018-12-27 23:35:52 -08:00
parent 8a50729a98
commit 314f98f2a6
2 changed files with 179 additions and 69 deletions
@@ -304,12 +304,19 @@ export class BufferLine implements IBufferLine {
    return 0;
  }

-  public copyCellsFrom(src: BufferLine, srcCol: number, destCol: number, length: number): void {
-    console.log('  copyCellsFrom', srcCol, destCol, length);
+  public copyCellsFrom(src: BufferLine, srcCol: number, destCol: number, length: number, applyInReverse: boolean): void {
    const srcData = src._data;
-    for (let cell = 0; cell < length; cell++) {
-      for (let i = 0; i < CELL_SIZE; i++) {
-        this._data[(destCol + cell) * CELL_SIZE + i] = srcData[(srcCol + cell) * CELL_SIZE + i];
+    if (applyInReverse) {
+      for (let cell = length - 1; cell >= 0; cell--) {
+        for (let i = 0; i < CELL_SIZE; i++) {
+          this._data[(destCol + cell) * CELL_SIZE + i] = srcData[(srcCol + cell) * CELL_SIZE + i];
+        }
+      }
+    } else {
+      for (let cell = 0; cell < length; cell++) {
+        for (let i = 0; i < CELL_SIZE; i++) {
+          this._data[(destCol + cell) * CELL_SIZE + i] = srcData[(srcCol + cell) * CELL_SIZE + i];
+        }
      }
    }
  }