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▪图片设立圆角、圆形、投影 图片设置圆角、圆形、投影
/**图片转换成圆形 */
public Bitmap toRoundBitmap(Bitmap bitmap) {
int width = bitmap.getWidth();
int height = bitmap.getHeight();
float roundPx;
float left, top, right, bottom, dst_left, dst_top, d.........
▪ xpath学习2 xpath学习二
xpath学习二,主要是更深格式的学习。child::book 查找当前节点下的所有的book孩子节点attribute::lang 查找当前节点的lang属性child::* 查找当前节点的所有节点attribute::* 查找当前节点的.........
▪ 四 6.OC12-内存管理3-@property参数详解 4 6.OC12-内存管理3-@property参数详解
4 6.OC12-内存管理3-@property参数详解
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[1]图片设立圆角、圆形、投影
来源: 互联网 发布时间: 2014-02-18
图片设置圆角、圆形、投影
/**图片转换成圆形 */ public Bitmap toRoundBitmap(Bitmap bitmap) { int width = bitmap.getWidth(); int height = bitmap.getHeight(); float roundPx; float left, top, right, bottom, dst_left, dst_top, dst_right, dst_bottom; if (width <= height) { roundPx = width / 2; left = 0; top = 0; right = width; bottom = width; height = width; dst_left = 0; dst_top = 0; dst_right = width; dst_bottom = width; } else { roundPx = height / 2; float clip = (width - height) / 2; left = clip; right = width - clip; top = 0; bottom = height; width = height; dst_left = 0; dst_top = 0; dst_right = height; dst_bottom = height; } Bitmap output = Bitmap.createBitmap(width, height, Config.ARGB_8888); Canvas canvas = new Canvas(output); final Paint paint = new Paint(); final Rect src = new Rect((int) left, (int) top, (int) right, (int) bottom); final Rect dst = new Rect((int) dst_left, (int) dst_top, (int) dst_right, (int) dst_bottom); final RectF rectF = new RectF(dst); paint.setAntiAlias(true);// 设置画笔无锯齿 canvas.drawARGB(0, 0, 0, 0); // 填充整个Canvas // 以下有两种方法画圆,drawRounRect和drawCircle canvas.drawRoundRect(rectF, roundPx, roundPx, paint);// 画圆角矩形,第一个参数为图形显示区域,第二个参数和第三个参数分别是水平圆角半径和垂直圆角半径。 // canvas.drawCircle(roundPx, roundPx, roundPx, paint); paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));// 设置两张图片相交时的模式,参考http://trylovecatch.iteye.com/blog/1189452 canvas.drawBitmap(bitmap, src, dst, paint); // 以Mode.SRC_IN模式合并bitmap和已经draw了的Circle return output; } /**图片转换成圆角*/ public static Bitmap getRoundedCornerBitmap(Bitmap bitmap) { Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888); Canvas canvas = new Canvas(output); final int color = 0xff424242; final Paint paint = new Paint(); final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()); final RectF rectF = new RectF(rect); final float roundPx = 50; /** 这里设置圆角度数 */ paint.setAntiAlias(true); canvas.drawARGB(0, 0, 0, 0); paint.setColor(color); canvas.drawRoundRect(rectF, roundPx, roundPx, paint); paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN)); canvas.drawBitmap(bitmap, rect, rect, paint); return output; } /**图片设置倒影*/ public static Bitmap createReflectedImage(Bitmap originalBitmap) { // 图片与倒影间隔距离 final int reflectionGap = 4; // 图片的宽度 int width = originalBitmap.getWidth(); // 图片的高度 int height = originalBitmap.getHeight(); Matrix matrix = new Matrix(); // 图片缩放,x轴变为原来的1倍,y轴为-1倍,实现图片的反转 matrix.preScale(1, -1); // 创建反转后的图片Bitmap对象,图片高是原图的一半。 Bitmap reflectionBitmap = Bitmap.createBitmap(originalBitmap, 0, height / 2, width, height / 2, matrix, false); // 创建标准的Bitmap对象,宽和原图一致,高是原图的1.5倍。 Bitmap withReflectionBitmap = Bitmap.createBitmap(width, (height + height / 2 + reflectionGap), Config.ARGB_8888); // 构造函数传入Bitmap对象,为了在图片上画图 Canvas canvas = new Canvas(withReflectionBitmap); // 画原始图片 canvas.drawBitmap(originalBitmap, 0, 0, null); // 画间隔矩形 Paint defaultPaint = new Paint(); canvas.drawRect(0, height, width, height + reflectionGap, defaultPaint); // 画倒影图片 canvas.drawBitmap(reflectionBitmap, 0, height + reflectionGap, null); // 实现倒影效果 Paint paint = new Paint(); LinearGradient shader = new LinearGradient(0, originalBitmap.getHeight(), 0, withReflectionBitmap.getHeight(), 0x70ffffff, 0x00ffffff, TileMode.MIRROR); paint.setShader(shader); paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN)); // 覆盖效果 canvas.drawRect(0, height, width, withReflectionBitmap.getHeight(), paint); return withReflectionBitmap; }
[2] xpath学习2
来源: 互联网 发布时间: 2014-02-18
xpath学习二
xpath学习二,主要是更深格式的学习。
child::book 查找当前节点下的所有的book孩子节点
attribute::lang 查找当前节点的lang属性
child::* 查找当前节点的所有节点
attribute::* 查找当前节点的所有属性
child::text() 查找当前节点下的所有孩子节点的text
child::node() 查找当前节点下的所有孩子节点
descendant::book Selects all book descendants of the current node
ancestor::book Selects all book ancestors of the current node
ancestor-or-self::book Selects all book ancestors of the current node - and the current as well if it is a book node
child::*/child::price Selects all price grandchildren of the current node
xpath学习二,主要是更深格式的学习。
child::book 查找当前节点下的所有的book孩子节点
attribute::lang 查找当前节点的lang属性
child::* 查找当前节点的所有节点
attribute::* 查找当前节点的所有属性
child::text() 查找当前节点下的所有孩子节点的text
child::node() 查找当前节点下的所有孩子节点
descendant::book Selects all book descendants of the current node
ancestor::book Selects all book ancestors of the current node
ancestor-or-self::book Selects all book ancestors of the current node - and the current as well if it is a book node
child::*/child::price Selects all price grandchildren of the current node
[3] 四 6.OC12-内存管理3-@property参数详解
来源: 互联网 发布时间: 2014-02-18
4 6.OC12-内存管理3-@property参数详解
4 6.OC12-内存管理3-@property参数详解
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