Java Code Examples for android.content.pm.activityinfo#WindowLayout

@Override
public int onCalculate(TaskRecord task, ActivityInfo.WindowLayout layout,
        ActivityRecord activity, ActivityRecord source, ActivityOptions options,
        LaunchParams currentParams, LaunchParams outParams) {
    // We only care about figuring out bounds for activities.
    if (activity == null) {
        return RESULT_SKIP;
    }

    // Activity must be resizeable in the specified task.
    if (!(mSupervisor.canUseActivityOptionsLaunchBounds(options)
            && (activity.isResizeable() || (task != null && task.isResizeable())))) {
        return RESULT_SKIP;
    }

    final Rect bounds = options.getLaunchBounds();

    // Bounds weren't valid.
    if (bounds == null || bounds.isEmpty()) {
        return RESULT_SKIP;
    }

    outParams.mBounds.set(bounds);

    // When this is the most explicit position specification so we should not allow further
    // modification of the position.
    return RESULT_DONE;
}
 

private int getFinalWidth(ActivityInfo.WindowLayout windowLayout, Rect availableRect) {
    int width = getFreeformWidth(availableRect);
    if (windowLayout.width > 0) {
        width = windowLayout.width;
    }
    if (windowLayout.widthFraction > 0) {
        width = (int) (availableRect.width() * windowLayout.widthFraction);
    }
    return width;
}
 

private int getFinalHeight(ActivityInfo.WindowLayout windowLayout, Rect availableRect) {
    int height = getFreeformHeight(availableRect);
    if (windowLayout.height > 0) {
        height = windowLayout.height;
    }
    if (windowLayout.heightFraction > 0) {
        height = (int) (availableRect.height() * windowLayout.heightFraction);
    }
    return height;
}
 

/**
 * Tries to set task's bound in a way that it won't collide with any other task. By colliding
 * we mean that two tasks have left-top corner very close to each other, so one might get
 * obfuscated by the other one.
 */
@Override
public int onCalculate(TaskRecord task, ActivityInfo.WindowLayout layout,
                       ActivityRecord activity, ActivityRecord source, ActivityOptions options,
                       LaunchParams currentParams, LaunchParams outParams) {
    // We can only apply positioning if we're in a freeform stack.
    if (task == null || task.getStack() == null || !task.inFreeformWindowingMode()) {
        return RESULT_SKIP;
    }

    final ArrayList<TaskRecord> tasks = task.getStack().getAllTasks();

    mAvailableRect.set(task.getParent().getBounds());

    final Rect resultBounds = outParams.mBounds;

    if (layout == null) {
        positionCenter(tasks, mAvailableRect, getFreeformWidth(mAvailableRect),
                getFreeformHeight(mAvailableRect), resultBounds);
        return RESULT_CONTINUE;
    }

    int width = getFinalWidth(layout, mAvailableRect);
    int height = getFinalHeight(layout, mAvailableRect);
    int verticalGravity = layout.gravity & Gravity.VERTICAL_GRAVITY_MASK;
    int horizontalGravity = layout.gravity & Gravity.HORIZONTAL_GRAVITY_MASK;
    if (verticalGravity == Gravity.TOP) {
        if (horizontalGravity == Gravity.RIGHT) {
            positionTopRight(tasks, mAvailableRect, width, height, resultBounds);
        } else {
            positionTopLeft(tasks, mAvailableRect, width, height, resultBounds);
        }
    } else if (verticalGravity == Gravity.BOTTOM) {
        if (horizontalGravity == Gravity.RIGHT) {
            positionBottomRight(tasks, mAvailableRect, width, height, resultBounds);
        } else {
            positionBottomLeft(tasks, mAvailableRect, width, height, resultBounds);
        }
    } else {
        // Some fancy gravity setting that we don't support yet. We just put the activity in the
        // center.
        Slog.w(TAG, "Received unsupported gravity: " + layout.gravity
                + ", positioning in the center instead.");
        positionCenter(tasks, mAvailableRect, width, height, resultBounds);
    }

    return RESULT_CONTINUE;
}