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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();
}
}
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