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package com.taobao.weex.utils;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.os.Build;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import com.taobao.weex.WXEnvironment;
import com.taobao.weex.WXSDKInstance;
import com.taobao.weex.WXSDKManager;
import com.taobao.weex.common.WXRuntimeException;
import com.taobao.weex.ui.view.border.BorderDrawable;
/**
* Utility class for views
*/
public class WXViewUtils {
/**
* System chooses a format that supports translucency (many alpha bits)
*/
public static final int TRANSLUCENT = -3;
/**
* System chooses a format that supports transparency (at least 1 alpha bit)
*/
public static final int TRANSPARENT = -2;
/**
* System chooses an opaque format (no alpha bits required)
*/
public static final int OPAQUE = -1;
private static final boolean mUseWebPx = false;
public static int getWeexHeight(String instanceId) {
WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(instanceId);
if (instance != null) {
int weexHeight = instance.getWeexHeight();
if (weexHeight >= 0 || weexHeight == -2) {
return weexHeight;
}
return getScreenHeight(WXEnvironment.sApplication);
}
return -3;
}
@Deprecated
public static int getScreenHeight() {
if(WXEnvironment.sApplication!=null){
return WXEnvironment.sApplication.getResources()
.getDisplayMetrics()
.heightPixels;
}
if(WXEnvironment.isApkDebugable()){
throw new WXRuntimeException("Error Context is null When getScreenHeight");
}
return 0;
}
public static int getScreenHeight(Context cxt) {
if(cxt!=null){
return cxt.getResources().getDisplayMetrics().heightPixels;
}
if(WXEnvironment.isApkDebugable()){
throw new WXRuntimeException("Error Context is null When getScreenHeight");
}
return 0;
}
public static int getWeexWidth(String instanceId) {
WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(instanceId);
if (instance != null) {
int weexWidth = instance.getWeexWidth();
if (weexWidth >= 0 || weexWidth == -2) {
return weexWidth;
}
return getScreenWidth(WXEnvironment.sApplication);
}
return -3;
}
@Deprecated
public static int getScreenWidth( ) {
if(WXEnvironment.sApplication!=null) {
int width = WXEnvironment.sApplication.getResources().getDisplayMetrics().widthPixels;
if(WXEnvironment.SETTING_FORCE_VERTICAL_SCREEN){
int height = WXEnvironment.sApplication.getResources()
.getDisplayMetrics()
.heightPixels;
width = height > width ?width:height;
}
return width;
}
if(WXEnvironment.isApkDebugable()){
throw new WXRuntimeException("Error Context is null When getScreenHeight");
}
return 0;
}
public static int getScreenWidth(Context cxt) {
if(cxt!=null){
int width = WXEnvironment.sApplication.getResources().getDisplayMetrics().widthPixels;
if(WXEnvironment.SETTING_FORCE_VERTICAL_SCREEN){
int height = WXEnvironment.sApplication.getResources()
.getDisplayMetrics()
.heightPixels;
width = height > width ?width:height;
}
return width;
}
if(WXEnvironment.isApkDebugable()){
throw new WXRuntimeException("Error Context is null When getScreenHeight");
}
return 0;
}
/**
* Convert distance from JS,CSS to native. As the JS considers the width of the screen is 750px.
* There must be a transform when accessing distance from JS,CSS and use it.
* Basically, this method calculates a scale factor(ScreenWidth/750) and use apply this scale
* factor to JS,CSS distance.
* @param pxValue the raw distance from JS or CSS. The result will be rounded to a closet int.
* @return the actual distance in the screen.
*/
public static float getRealPxByWidth(float pxValue) {
if (Float.isNaN(pxValue)) {
return pxValue;
}
if (mUseWebPx) {
return (float) Math.rint(pxValue);
} else {
float realPx = (pxValue * getScreenWidth() / WXEnvironment.sDefaultWidth);
return realPx > 0.005 && realPx < 1 ? 1 : (float) Math.rint(realPx);
}
}
public static float getRealSubPxByWidth(float pxValue) {
if (Float.isNaN(pxValue)) {
return pxValue;
}
if (mUseWebPx) {
return (float) Math.rint(pxValue);
} else {
float realPx = (pxValue * getScreenWidth() / WXEnvironment.sDefaultWidth);
return realPx > 0.005 && realPx < 1 ? 1 : realPx;
}
}
/**
* Internal interface that just for debug, you should never call this method because of accuracy loss obviously
*/
public static float getWeexPxByReal(float pxValue) {
if (Float.isNaN(pxValue)) {
return pxValue;
}
if (mUseWebPx) {
return (float) Math.rint(pxValue);
} else {
return pxValue * WXEnvironment.sDefaultWidth / getScreenWidth();
}
}
public static int getRealPxByWidth2(float pxValue) {
if (mUseWebPx) {
return (int) pxValue;
} else {
float realPx = (pxValue * getScreenWidth() / WXEnvironment.sDefaultWidth);
return realPx > 0.005 && realPx < 1 ? 1 : (int) realPx - 1;
}
}
/**
* Convert distance from native to JS,CSS. As the JS considers the width of the screen is 750px.
* There must be a transform when return distance to JS,CSS.
* Basically, this method calculates a scale factor(ScreenWidth/750) and use apply this scale
* factor to native distance.
* @param pxValue the raw distance of native. The result will be rounded to a closet int.
* @return the distance in JS,CSS where the screenWidth is 750 px.
*/
public static float getWebPxByWidth(float pxValue) {
if (pxValue < -1.9999 && pxValue > -2.005) {
return Float.NaN;
}
if (mUseWebPx) {
return pxValue;
} else {
float realPx = (pxValue * WXEnvironment.sDefaultWidth / getScreenWidth());
return realPx > 0.005 && realPx < 1 ? 1 : realPx;
}
}
/**
* Convert dp to px
* @param dpValue the dp value to be converted
* @return the px value
*/
public static int dip2px(float dpValue) {
float scale = 2;
try {
scale = WXEnvironment.getApplication().getResources()
.getDisplayMetrics().density;
} catch (Exception e) {
WXLogUtils.e("[WXViewUtils] dip2px:", e);
}
float finalPx = (dpValue * scale + 0.5f);
return finalPx > 0 && finalPx < 1 ? 1 : (int) finalPx;
}
public static boolean onScreenArea(View view) {
if (view == null || view.getVisibility() != View.VISIBLE) {
return false;
}
int[] p = new int[2];
view.getLocationOnScreen(p);
LayoutParams lp = view.getLayoutParams();
int viewH = 0;
if (lp != null) {
viewH = lp.height;
} else {
viewH = view.getHeight();
}
return (p[1] > 0 && (p[1] - WXViewUtils.getScreenHeight(WXEnvironment.sApplication) < 0))
|| (viewH + p[1] > 0 && p[1] <= 0);
}
/**
* Multiplies the color with the given alpha.
*
* @param color color to be multiplied
* @param alpha value between 0 and 255
* @return multiplied color
*/
public static int multiplyColorAlpha(int color, int alpha) {
if (alpha == 255) {
return color;
}
if (alpha == 0) {
return color & 0x00FFFFFF;
}
alpha = alpha + (alpha >> 7); // make it 0..256
int colorAlpha = color >>> 24;
int multipliedAlpha = colorAlpha * alpha >> 8;
return (multipliedAlpha << 24) | (color & 0x00FFFFFF);
}
public static int getOpacityFromColor(int color) {
int colorAlpha = color >>> 24;
if (colorAlpha == 255) {
return OPAQUE;
} else if (colorAlpha == 0) {
return TRANSPARENT;
} else {
return TRANSLUCENT;
}
}
@SuppressWarnings("deprecation")
public static void setBackGround(View view, Drawable drawable){
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN){
view.setBackgroundDrawable(drawable);
}
else{
view.setBackground(drawable);
}
}
public static @Nullable
BorderDrawable getBorderDrawable(@NonNull View view){
Drawable drawable=view.getBackground();
if(drawable instanceof BorderDrawable){
return (BorderDrawable) drawable;
}
else if(drawable instanceof LayerDrawable){
if(((LayerDrawable) drawable).getNumberOfLayers()>1) {
Drawable innerDrawable=((LayerDrawable) drawable).getDrawable(0);
if(innerDrawable instanceof BorderDrawable){
return (BorderDrawable) innerDrawable;
}
}
}
return null;
}
}