1 files changed, 111 insertions, 0 deletions
diff --git a/android/source/src/java/org/libreoffice/canvas/CalcSelectionBox.java b/android/source/src/java/org/libreoffice/canvas/CalcSelectionBox.java
new file mode 100644
index 000000000..af31d708d
--- /dev/null
+++ b/android/source/src/java/org/libreoffice/canvas/CalcSelectionBox.java
@@ -0,0 +1,111 @@
+package org.libreoffice.canvas;
+
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.graphics.PointF;
+import android.graphics.RectF;
+
+import org.libreoffice.LOKitShell;
+import org.libreoffice.LibreOfficeMainActivity;
+import org.mozilla.gecko.gfx.ImmutableViewportMetrics;
+
+/**
+ * CalcSelectionBox is the selection frame for the current highlighted area/cells
+ * in Calc.
+ */
+
+public class CalcSelectionBox extends CommonCanvasElement {
+    private static final long MINIMUM_HANDLE_UPDATE_TIME = 50 * 1000000;
+    private static final float CIRCLE_HANDLE_RADIUS = 8f;
+
+    public RectF mDocumentPosition;
+
+    private LibreOfficeMainActivity mContext;
+    private RectF mScreenPosition;
+    private long mLastTime = 0;
+    private Paint mPaint;
+    private Paint mCirclePaint;
+
+    public CalcSelectionBox(LibreOfficeMainActivity context) {
+        mContext = context;
+        mScreenPosition = new RectF();
+        mDocumentPosition = new RectF();
+        mPaint = new Paint();
+        mPaint.setStyle(Paint.Style.STROKE);
+        mPaint.setColor(Color.BLACK);
+        mPaint.setStrokeWidth(2f);
+        mCirclePaint = new Paint();
+        mCirclePaint.setColor(Color.BLACK);
+        mCirclePaint.setStyle(Paint.Style.FILL);
+    }
+
+    /**
+     * Start of a touch and drag action on the box.
+     */
+    public void dragStart(PointF point) {}
+
+    /**
+     * End of a touch and drag action on the box.
+     */
+    public void dragEnd(PointF point) {}
+
+    /**
+     * Box has been dragged.
+     */
+    public void dragging(PointF point) {
+        long currentTime = System.nanoTime();
+        if (currentTime - mLastTime > MINIMUM_HANDLE_UPDATE_TIME) {
+            mLastTime = currentTime;
+            signalHandleMove(point.x, point.y);
+        }
+    }
+
+    /**
+     * Signal to move the handle to a new position to LO.
+     */
+    private void signalHandleMove(float newX, float newY) {
+        ImmutableViewportMetrics viewportMetrics = mContext.getLayerClient().getViewportMetrics();
+        float zoom = viewportMetrics.zoomFactor;
+        PointF origin = viewportMetrics.getOrigin();
+
+        PointF documentPoint = new PointF((newX+origin.x)/zoom , (newY+origin.y)/zoom);
+
+        if (documentPoint.x < mDocumentPosition.left || documentPoint.y < mDocumentPosition.top) {
+            LOKitShell.sendChangeHandlePositionEvent(SelectionHandle.HandleType.START, documentPoint);
+        } else if (documentPoint.x > mDocumentPosition.right || documentPoint.y > mDocumentPosition.bottom){
+            LOKitShell.sendChangeHandlePositionEvent(SelectionHandle.HandleType.END, documentPoint);
+        }
+    }
+
+    @Override
+    public boolean onHitTest(float x, float y) {
+        return mScreenPosition.contains(x, y);
+    }
+
+    @Override
+    public void onDraw(Canvas canvas) {
+        canvas.drawRect(mScreenPosition, mPaint);
+        canvas.drawCircle(mScreenPosition.left, mScreenPosition.top, CIRCLE_HANDLE_RADIUS, mCirclePaint);
+        canvas.drawCircle(mScreenPosition.right, mScreenPosition.bottom, CIRCLE_HANDLE_RADIUS, mCirclePaint);
+    }
+
+    public void reposition(RectF rect) {
+        mScreenPosition = rect;
+    }
+
+    @Override
+    public boolean contains(float x, float y) {
+        // test if in range of the box or the circular handles
+        boolean inRange =  new RectF(mScreenPosition.left - CIRCLE_HANDLE_RADIUS,
+                mScreenPosition.top - CIRCLE_HANDLE_RADIUS,
+                mScreenPosition.left + CIRCLE_HANDLE_RADIUS,
+                mScreenPosition.top + CIRCLE_HANDLE_RADIUS).contains(x, y)
+                || new RectF(mScreenPosition.right - CIRCLE_HANDLE_RADIUS,
+                mScreenPosition.bottom - CIRCLE_HANDLE_RADIUS,
+                mScreenPosition.right + CIRCLE_HANDLE_RADIUS,
+                mScreenPosition.bottom + CIRCLE_HANDLE_RADIUS).contains(x, y)
+                || onHitTest(x, y);
+        return inRange && isVisible();
+    }
+}