package com.smartdot.cgt.view;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Color;
import android.graphics.Typeface;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.shapes.RoundRectShape;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.ViewParent;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.DecelerateInterpolator;
import android.widget.FrameLayout;
import android.widget.TabWidget;
import android.widget.TextView;
/**
* A simple text label view that can be applied as a "badge" to any given
* {@link android.view.View}.
* 杩欎釜绫荤殑鐩殑鏄湪杩愯鏃惰瀹炰緥鍖?鑰屼笉鏄寘鍚湪XML甯冨眬涓?
*
* @author Jeff Gilfelt
*/
public class BadgeView extends TextView
{
public static final int POSITION_TOP_LEFT = 1;
public static final int POSITION_TOP_RIGHT = 2;
public static final int POSITION_BOTTOM_LEFT = 3;
public static final int POSITION_BOTTOM_RIGHT = 4;
public static final int POSITION_CENTER = 15;
private static final int DEFAULT_MARGIN_DIP = 5;
private static final int DEFAULT_LR_PADDING_DIP = 5;
private static final int DEFAULT_CORNER_RADIUS_DIP = 8;
private static final int DEFAULT_POSITION = POSITION_TOP_RIGHT;
private static final int DEFAULT_BADGE_COLOR = Color.RED;
private static final int DEFAULT_TEXT_COLOR = Color.WHITE;
private static Animation fadeIn;
private static Animation fadeOut;
private Context context;
private View target;
private int badgePosition;
private int badgeMargin;
private int badgeColor;
private boolean isShown;
private ShapeDrawable badgeBg;
private int targetTabIndex;
public BadgeView(Context context)
{
this(context, (AttributeSet) null, android.R.attr.textViewStyle);
}
public BadgeView(Context context, AttributeSet attrs)
{
this(context, attrs, android.R.attr.textViewStyle);
}
/**
* 鏋勯?鍑芥暟 -
*
* 鍒涘缓涓?釜鏂扮殑BadgeView瀹炰緥闄勫姞鍒扮洰鏍噞@link android.view.View}.
*
* @param context
* View鐨勪笂涓嬫枃
* @param target
* 瑕佹坊鍔燘adge鐨刅iew
*/
public BadgeView(Context context, View target)
{
this(context, null, android.R.attr.textViewStyle, target, 0);
}
/**
* 鏋勯?鍑芥暟 -
*
* 鍒涘缓涓?釜鏂扮殑BadgeView瀹炰緥闄勫姞鍒扮洰鏍噞@link android.widget.TabWidget} 閫夐」鍗? *
* @param context
* View鐨勪笂涓嬫枃
* @param target
* 瑕佹坊鍔燘adge鐨凾abWidget
* @param index
* 閫夐」鍗′腑鐨勮娣诲姞Badge鐨勫簭鍙? */
public BadgeView(Context context, TabWidget target, int index)
{
this(context, null, android.R.attr.textViewStyle, target, index);
}
public BadgeView(Context context, AttributeSet attrs, int defStyle)
{
this(context, attrs, defStyle, null, 0);
}
public BadgeView(Context context, AttributeSet attrs, int defStyle,
View target, int tabIndex)
{
super(context, attrs, defStyle);
init(context, target, tabIndex);
}
/**
* 鍒濆鍖? */
private void init(Context context, View target, int tabIndex)
{
this.context = context;
this.target = target;
this.targetTabIndex = tabIndex;
// 璁剧疆榛樿鍙傛暟
badgePosition = DEFAULT_POSITION;
badgeMargin = dipToPixels(DEFAULT_MARGIN_DIP);
badgeColor = DEFAULT_BADGE_COLOR;
setTypeface(Typeface.DEFAULT_BOLD);// 璁剧疆瀛椾綋涓?榛戜綋
int paddingPixels = dipToPixels(DEFAULT_LR_PADDING_DIP);
setPadding(paddingPixels, 0, paddingPixels, 0);
setTextColor(DEFAULT_TEXT_COLOR);
fadeIn = new AlphaAnimation(0, 1);
fadeIn.setInterpolator(new DecelerateInterpolator());
fadeIn.setDuration(200);
fadeOut = new AlphaAnimation(1, 0);
fadeOut.setInterpolator(new AccelerateInterpolator());
fadeOut.setDuration(200);
isShown = false;
if (this.target != null)
{
applyTo(this.target);
}
else
{
show();
}
}
/**
* 灏咮adgeView娣诲姞鍒癡iew涓?鍏跺疄鐜版柟娉曟槸,鐢ㄤ竴涓狥rameLayout浠ｆ浛鐩爣View鍦╒iewGroup涓殑浣嶇疆
* 鍐嶅湪FrameLayout涓坊鍔犵洰鏍嘨iew鍜孊adgeView
*/
private void applyTo(View target)
{
LayoutParams lp = target.getLayoutParams();
ViewParent parent = target.getParent();
FrameLayout container = new FrameLayout(context);
if (target instanceof TabWidget)
{
// set target to the relevant tab child container
target = ((TabWidget) target).getChildTabViewAt(targetTabIndex);
this.target = target;
((ViewGroup) target).addView(container, new LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
this.setVisibility(View.GONE);
container.addView(this);
}
else
{
// verify that parent is indeed a ViewGroup
ViewGroup group = (ViewGroup) parent;
int index = group.indexOfChild(target);
group.removeView(target);
group.addView(container, index, lp);
container.addView(target);
this.setVisibility(View.GONE);
container.addView(this);
group.invalidate();
}
}
/**
* 浣緽adgeView鍙
*/
public void show()
{
show(false, null);
}
/**
* 浣緽adgeView鍙骞堕?鎷╂槸鍚︿娇鐢ㄩ粯璁ゅ姩鐢绘晥鏋? *
* @param animate
* 鏄惁搴旂敤榛樿娣″叆鍔ㄧ敾銆? */
public void show(boolean animate)
{
show(animate, fadeIn);
}
/**
* 浣緽adgeView鍙骞朵娇鐢ㄥ姩鐢绘晥鏋? *
* @param anim
* 浣垮叾鍙鏃舵挱鏀剧殑鍔ㄧ敾
*/
public void show(Animation anim)
{
show(true, anim);
}
/**
* 浣緽adgeView涓嶅彲瑙? */
public void hide()
{
hide(false, null);
}
/**
* 浣緽adgeView琛ュ彲瑙佸苟閫夋嫨鏄惁浣跨敤榛樿鍔ㄧ敾鏁堟灉
*
* @param animate
* 鏄惁搴旂敤榛樿娣″嚭鍔ㄧ敾銆? */
public void hide(boolean animate)
{
hide(animate, fadeOut);
}
/**
* 浣緽adgeView涓嶅彲瑙佸苟浣跨敤鍔ㄧ敾鏁堟灉
*
* @param anim
* 浣垮叾涓嶅彲瑙佹椂鎾斁鐨勫姩鐢? */
public void hide(Animation anim)
{
hide(true, anim);
}
/**
* 鍒囨崲鐣岄潰鐨勫彲瑙嗘?銆? */
public void toggle()
{
toggle(false, null, null);
}
/**
* 鍒囨崲鐣岄潰鐨勫彲瑙嗘?銆? *
* @param animate
* 鏄惁搴旂敤榛樿鍔ㄧ敾銆? */
public void toggle(boolean animate)
{
toggle(animate, fadeIn, fadeOut);
}
/**
* 鍒囨崲鐣岄潰鐨勫彲瑙嗘?銆? *
* @param animIn
* 浣垮叾鍙鏃舵挱鏀剧殑鍔ㄧ敾
* @param animOut
* 浣垮叾涓嶅彲瑙佹椂鎾斁鐨勫姩鐢? */
public void toggle(Animation animIn, Animation animOut)
{
toggle(true, animIn, animOut);
}
/**
* 浣緽adgeView鍙
*/
private void show(boolean animate, Animation anim)
{
if (getBackground() == null)
{
if (badgeBg == null)
{
badgeBg = getDefaultBackground();
}
setBackgroundDrawable(badgeBg);
}
applyLayoutParams();
if (animate)
{
this.startAnimation(anim);
}
this.setVisibility(View.VISIBLE);
isShown = true;
}
/**
* 浣緽adgeView涓嶅彲瑙? */
private void hide(boolean animate, Animation anim)
{
this.setVisibility(View.GONE);
if (animate)
{
this.startAnimation(anim);
}
isShown = false;
}
/**
* 鍒囨崲鐣岄潰鐨勫彲瑙嗘?銆? */
private void toggle(boolean animate, Animation animIn, Animation animOut)
{
if (isShown)
{
hide(animate && (animOut != null), animOut);
}
else
{
show(animate && (animIn != null), animIn);
}
}
/**
* 澧炲姞褰撳墠Badge鐨勬暟鍊?濡傛灉褰撳墠鐨勬暟鍊间笉鑳借杞崲鎴愪竴涓暣褰㈡暟,鍒橞adge鐨勬暟鍊煎皢浼氳缃负"0"
*
* @param offset
* 澧炲姞鐨勬暟鍊? */
public int increment(int offset)
{
CharSequence txt = getText();
int i;
if (txt != null)
{
try
{
i = Integer.parseInt(txt.toString());
}
catch (NumberFormatException e)
{
i = 0;
}
}
else
{
i = 0;
}
i = i + offset;
setText(String.valueOf(i));
return i;
}
/**
* 鍑忓皯褰撳墠Badge鐨勬暟鍊?濡傛灉褰撳墠鐨勬暟鍊间笉鑳借杞崲鎴愪竴涓暣褰㈡暟,鍒橞adge鐨勬暟鍊煎皢浼氳缃负"0"
*
* @param offset
* 鍑忓皯鐨勬暟鍊? */
public int decrement(int offset)
{
return increment(-offset);
}
/**
* 鑾峰彇榛樿鑳屾櫙
*/
private ShapeDrawable getDefaultBackground()
{
int r = dipToPixels(DEFAULT_CORNER_RADIUS_DIP);
float[] outerR = new float[] { r, r, r, r, r, r, r, r };
RoundRectShape rr = new RoundRectShape(outerR, null, null);
ShapeDrawable drawable = new ShapeDrawable(rr);
drawable.getPaint().setColor(badgeColor);
return drawable;
}
/**
* 搴旂敤甯冨眬鍙傛暟
*/
private void applyLayoutParams()
{
FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
switch (badgePosition)
{
case POSITION_TOP_LEFT:
lp.gravity = Gravity.LEFT | Gravity.TOP;
lp.setMargins(badgeMargin, badgeMargin, 0, 0);
break;
case POSITION_TOP_RIGHT:
lp.gravity = Gravity.RIGHT | Gravity.TOP;
lp.setMargins(0, 0, 0, 0);
break;
case POSITION_BOTTOM_LEFT:
lp.gravity = Gravity.LEFT | Gravity.BOTTOM;
lp.setMargins(badgeMargin, 0, 0, badgeMargin);
break;
case POSITION_BOTTOM_RIGHT:
lp.gravity = Gravity.RIGHT | Gravity.BOTTOM;
lp.setMargins(0, 0, badgeMargin, badgeMargin);
break;
case POSITION_CENTER:
lp.gravity = Gravity.CENTER;
lp.setMargins(0, 0, 0, 0);
break;
default:
break;
}
setLayoutParams(lp);
}
/**
* 杩斿洖姝adge宸查檮鍔犲埌鐨勭洰鏍囪鍥俱?
*
*/
public View getTarget()
{
return target;
}
/**
* 杩欎釜Badge鏄惁鍙
*
*/
@Override
public boolean isShown()
{
return isShown;
}
/**
* 杩斿洖杩欎釜Badge鐨勫畾浣嶃?
*
* one of POSITION_TOP_LEFT, POSITION_TOP_RIGHT, POSITION_BOTTOM_LEFT,
* POSITION_BOTTOM_RIGHT.
*
*/
public int getBadgePosition()
{
return badgePosition;
}
/**
* 璁剧疆Badge鐨勫畾浣? *
* @param layoutPosition
* one of POSITION_TOP_LEFT, POSITION_TOP_RIGHT,
* POSITION_BOTTOM_LEFT, POSITION_BOTTOM_RIGHT.
*
*/
public void setBadgePosition(int layoutPosition)
{
this.badgePosition = layoutPosition;
}
/**
* Returns the horizontal/vertical margin from the target View that is
* applied to this badge.
*/
public int getBadgeMargin()
{
return badgeMargin;
}
/**
* Set the horizontal/vertical margin from the target View that is applied
* to this badge.
*
* @param badgeMargin
* the margin in pixels.
*/
public void setBadgeMargin(int badgeMargin)
{
this.badgeMargin = badgeMargin;
}
/**
* 杩斿洖杩欎釜Badge鐨勮儗鏅鑹?
*
*/
public int getBadgeBackgroundColor()
{
return badgeColor;
}
/**
* 璁剧疆杩欎釜Badge鐨勮儗鏅鑹? *
* @param badgeColor
* 鑳屾櫙棰滆壊
*/
public void setBadgeBackgroundColor(int badgeColor)
{
this.badgeColor = badgeColor;
badgeBg = getDefaultBackground();
}
/**
* Dip杞琾x
*/
private int dipToPixels(int dip)
{
Resources r = getResources();
float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dip,
r.getDisplayMetrics());
return (int) px;
}
}
