Java Rect.intersect方法代碼示例

import android.graphics.Rect; //導入方法依賴的package包/類
/**
 * Returns the node's bounds clipped to the size of the display
 *
 * @param node
 * @param width  pixel width of the display
 * @param height pixel height of the display
 * @return null if node is null, else a Rect containing visible bounds
 */
public static Rect getVisibleBoundsInScreen(AccessibilityNodeInfo node, int width, int height) {
    if (node == null) {
        return null;
    }
    // targeted node's bounds
    Rect nodeRect = new Rect();
    node.getBoundsInScreen(nodeRect);

    Rect displayRect = new Rect();
    displayRect.top = 0;
    displayRect.left = 0;
    displayRect.right = width;
    displayRect.bottom = height;
    boolean intersect = nodeRect.intersect(displayRect);
    return nodeRect;
}
 

import android.graphics.Rect; //導入方法依賴的package包/類
/**
 * Calculate framing rectangle, relative to the preview frame.
 *
 * Note that the SurfaceView may be larger than the container.
 *
 * Override this for more control over the framing rect calculations.
 *
 * @param container this container, with left = top = 0
 * @param surface   the SurfaceView, relative to this container
 * @return the framing rect, relative to this container
 */
protected Rect calculateFramingRect(Rect container, Rect surface) {
    // intersection is the part of the container that is used for the preview
    Rect intersection = new Rect(container);
    boolean intersects = intersection.intersect(surface);

    if(framingRectSize != null) {
        // Specific size is specified. Make sure it's not larger than the container or surface.
        int horizontalMargin = Math.max(0, (intersection.width() - framingRectSize.width) / 2);
        int verticalMargin = Math.max(0, (intersection.height() - framingRectSize.height) / 2);
        intersection.inset(horizontalMargin, verticalMargin);
        return intersection;
    }
    // margin as 10% (default) of the smaller of width, height
    int margin = (int) Math.min(intersection.width() * marginFraction, intersection.height() * marginFraction);
    intersection.inset(margin, margin);
    if (intersection.height() > intersection.width()) {
        // We don't want a frame that is taller than wide.
        intersection.inset(0, (intersection.height() - intersection.width()) / 2);
    }
    return intersection;
}
 

import android.graphics.Rect; //導入方法依賴的package包/類
private boolean intersectVisibleToUser(Rect localRect) {
    if (localRect == null || localRect.isEmpty() || this.mView.getWindowVisibility() != 0) {
        return false;
    }
    ViewParent viewParent = this.mView.getParent();
    while (viewParent instanceof View) {
        View view = (View) viewParent;
        if (ViewCompat.getAlpha(view) <= 0.0f || view.getVisibility() != 0) {
            return false;
        }
        viewParent = view.getParent();
    }
    if (viewParent == null || !this.mView.getLocalVisibleRect(this.mTempVisibleRect)) {
        return false;
    }
    return localRect.intersect(this.mTempVisibleRect);
}
 

import android.graphics.Rect; //導入方法依賴的package包/類
/**
 * Determines if two views intersect in the window.
 */
public static boolean viewsIntersect(View view1, View view2) {
    if (view1 == null || view2 == null) return false;

    final int[] view1Loc = new int[2];
    view1.getLocationOnScreen(view1Loc);
    final Rect view1Rect = new Rect(view1Loc[0],
            view1Loc[1],
            view1Loc[0] + view1.getWidth(),
            view1Loc[1] + view1.getHeight());
    int[] view2Loc = new int[2];
    view2.getLocationOnScreen(view2Loc);
    final Rect view2Rect = new Rect(view2Loc[0],
            view2Loc[1],
            view2Loc[0] + view2.getWidth(),
            view2Loc[1] + view2.getHeight());
    return view1Rect.intersect(view2Rect);
}
 

import android.graphics.Rect; //導入方法依賴的package包/類
public int getSnapHeight() {
    if (!needSnap) {
        return 0;
    }
    needSnap = false;

    Rect displayRect = new Rect(0, scroll, getWidth(), getHeight() + scroll);
    int itemCount = getItemCount();
    for (int i = 0; i < itemCount; i++) {
        Rect itemRect = locationRects.get(i);
        if (displayRect.intersect(itemRect)) {

            if (lastDy > 0) {
                // scroll變大，屬於列表往下走，往下找下一個為snapView
                if (i < itemCount - 1) {
                    Rect nextRect = locationRects.get(i + 1);
                    return nextRect.top - displayRect.top;
                }
            }
            return itemRect.top - displayRect.top;
        }
    }
    return 0;
}
 

import android.graphics.Rect; //導入方法依賴的package包/類
private boolean hits(Fish fish, VisibleObject visibleObject) {
	int left1 = (int)displayPosX(fish);
	int top1 = (int)displayPosY(fish);
	int width1 = (int)(mDensityFactor*FISHWIDTH[fish.size]);
	int height1 = (int)(mDensityFactor*FISHHEIGHT[fish.size]);
	int delta1 = height1*2/10;
	Rect r1 = new Rect(left1+delta1, top1+delta1, left1+width1-delta1, top1+height1-delta1);
	int left2 = (int)displayPosX(visibleObject);
	int top2 = (int)displayPosY(visibleObject);
	int width2 = (int)(mDensityFactor*FISHWIDTH[visibleObject.size]);
	int height2 = (int)(mDensityFactor*FISHHEIGHT[visibleObject.size]);
	int delta2 = height2*2/10;
	Rect r2 = new Rect(left2+delta2, top2+delta2, left2+width2-delta2, top2+height2-delta2);
	if (r1.intersect(r2)) {
		return true;
	}
	return false;
}
 

import android.graphics.Rect; //導入方法依賴的package包/類
public boolean a(int i1, int j1) {
    Rect rect = c();
    boolean flag;
    if (rect != null)
        flag = rect.intersect(i1, j1, i1, j1);
    else
        flag = false;
    return flag;
}
 

import android.graphics.Rect; //導入方法依賴的package包/類
private Rect getVisibleBounds(AccessibilityNodeInfo node) {
    if (!visible) {
        return new Rect();
    }
    Rect visibleBounds = getBounds(this.node);
    UiAutomationElement parent = getParent();
    Rect parentBounds;
    while (parent != null && parent.node != null) {
        parentBounds = parent.getBounds(this.parent.node);
        visibleBounds.intersect(parentBounds);
        parent = parent.getParent();
    }
    return visibleBounds;
}
 

import android.graphics.Rect; //導入方法依賴的package包/類
public void updateHq(boolean update) {
	Rect viewArea = new Rect(getLeft(),getTop(),getRight(),getBottom());
	if (viewArea.width() == mSize.x || viewArea.height() == mSize.y) {
		// If the viewArea's size matches the unzoomed size, there is no need for an hq patch
		if (mPatch != null) {
			mPatch.setImageBitmap(null);
			mPatch.invalidate();
		}
	} else {
		final Point patchViewSize = new Point(viewArea.width(), viewArea.height());
		final Rect patchArea = new Rect(0, 0, mParentSize.x, mParentSize.y);

		// Intersect and test that there is an intersection
		if (!patchArea.intersect(viewArea))
			return;

		// Offset patch area to be relative to the view top left
		patchArea.offset(-viewArea.left, -viewArea.top);

		boolean area_unchanged = patchArea.equals(mPatchArea) && patchViewSize.equals(mPatchViewSize);

		// If being asked for the same area as last time and not because of an update then nothing to do
		if (area_unchanged && !update)
			return;

		boolean completeRedraw = !(area_unchanged && update);

		// Stop the drawing of previous patch if still going
		if (mDrawPatch != null) {
			mDrawPatch.cancel();
			mDrawPatch = null;
		}

		// Create and add the image view if not already done
		if (mPatch == null) {
			mPatch = new OpaqueImageView(mContext);
			mPatch.setScaleType(ImageView.ScaleType.MATRIX);
			addView(mPatch);
			mSearchView.bringToFront();
		}

		CancellableTaskDefinition<Void, Void> task;

		if (completeRedraw)
			task = getDrawPageTask(mPatchBm, patchViewSize.x, patchViewSize.y,
							patchArea.left, patchArea.top,
							patchArea.width(), patchArea.height());
		else
			task = getUpdatePageTask(mPatchBm, patchViewSize.x, patchViewSize.y,
					patchArea.left, patchArea.top,
					patchArea.width(), patchArea.height());

		mDrawPatch = new CancellableAsyncTask<Void,Void>(task) {

			public void onPostExecute(Void result) {
				mPatchViewSize = patchViewSize;
				mPatchArea = patchArea;
				mPatch.setImageBitmap(mPatchBm);
				mPatch.invalidate();
				//requestLayout();
				// Calling requestLayout here doesn't lead to a later call to layout. No idea
				// why, but apparently others have run into the problem.
				mPatch.layout(mPatchArea.left, mPatchArea.top, mPatchArea.right, mPatchArea.bottom);
			}
		};

		mDrawPatch.execute();
	}
}