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package com.br_technology.securitytrain_master.expand;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.graphics.Canvas;
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import android.graphics.Color;
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import android.graphics.Paint;
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import android.graphics.RectF;
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import android.graphics.drawable.BitmapDrawable;
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import android.graphics.drawable.Drawable;
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import android.text.TextUtils;
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import android.util.DisplayMetrics;
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import android.view.WindowManager;
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import androidx.annotation.ColorRes;
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import java.util.Collection;
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/**
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* 像素,dp.px互转
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*/
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public class TranslateUnit {
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private static WindowManager windowManager;
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private static WindowManager getWindowManager(Context context) {
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if (windowManager == null) {
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windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
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}
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return windowManager;
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}
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public static float getDensity(Context context) {
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return context.getResources().getDisplayMetrics().density;
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}
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public static float getFontDensity(Context context) {
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return context.getResources().getDisplayMetrics().scaledDensity;
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}
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public static DisplayMetrics getDisplayMetrics(Context context) {
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DisplayMetrics displayMetrics = new DisplayMetrics();
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getWindowManager(context).getDefaultDisplay().getMetrics(displayMetrics);
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return displayMetrics;
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}
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public static int dp2px(Context context, float dp) {
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return (int) (getDensity(context) * dp + 0.5f);
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}
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public static int px2dp(Context context, float px) {
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return (int) (px / getDensity(context) + 0.5f);
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}
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public static int sp2px(Context context, float sp) {
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return (int) (getFontDensity(context) * sp + 0.5f);
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}
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public static int px2sp(Context context, float px) {
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return (int) (px / getFontDensity(context) + 0.5f);
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}
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public static int getWindowWidth(Context context) {
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return getDisplayMetrics(context).widthPixels;
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}
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public static int getWindowHeight(Context context) {
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return getDisplayMetrics(context).heightPixels;
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}
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public static String getPathFormat(String path) {
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if (!TextUtils.isEmpty(path)) {
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int lastPeriodIndex = path.lastIndexOf('.');
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if (lastPeriodIndex > 0 && lastPeriodIndex + 1 < path.length()) {
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String format = path.substring(lastPeriodIndex + 1);
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if (!TextUtils.isEmpty(format)) {
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return format.toLowerCase();
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}
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}
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}
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return "";
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}
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public static boolean isGif(String url) {
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return "gif".equals(getPathFormat(url));
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}
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public static Bitmap getTextBitmap(Context context, int width, int height, int radius, String text, int textSize, @ColorRes int bgColor) {
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radius = dp2px(context, radius);
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Bitmap bitmap = Bitmap.createBitmap(dp2px(context, width), dp2px(context, height), Bitmap.Config.ARGB_8888);
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Canvas canvas = new Canvas(bitmap);
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RectF rect = new RectF(0, 0, canvas.getWidth(), canvas.getHeight());
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Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
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paint.setColor(context.getResources().getColor(bgColor));
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canvas.drawRoundRect(new RectF(0, 0, rect.width(), rect.height()), radius, radius, paint);
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paint.setColor(Color.WHITE);
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paint.setTextSize(dp2px(context, textSize));
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paint.setTextAlign(Paint.Align.CENTER);
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Paint.FontMetricsInt fontMetrics = paint.getFontMetricsInt();
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float baseline = (rect.bottom + rect.top - fontMetrics.bottom - fontMetrics.top) / 2;
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canvas.drawText(text, rect.centerX(), baseline, paint);
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return bitmap;
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}
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public static Drawable getTextDrawable(Context context, int width, int height, int radius, String text, int textSize, @ColorRes int bgColor) {
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return new BitmapDrawable(getTextBitmap(context, width, height, radius, text, textSize, bgColor));
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}
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public static boolean isEmpty(Collection<?> collection) {
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return collection == null || collection.isEmpty();
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}
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public static int getSize(Collection<?> collection) {
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return collection == null ? 0 : collection.size();
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}
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} |
...
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...
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